Mercurial > hg > pmhd
diff ffmpeg/libavcodec/h264.c @ 10:6840f77b83aa
commit
| author | Yading Song <yading.song@eecs.qmul.ac.uk> |
|---|---|
| date | Sun, 21 Apr 2013 10:55:35 +0200 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/ffmpeg/libavcodec/h264.c Sun Apr 21 10:55:35 2013 +0200 @@ -0,0 +1,5076 @@ +/* + * H.26L/H.264/AVC/JVT/14496-10/... decoder + * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * H.264 / AVC / MPEG4 part10 codec. + * @author Michael Niedermayer <michaelni@gmx.at> + */ + +#define UNCHECKED_BITSTREAM_READER 1 + +#include "libavutil/imgutils.h" +#include "libavutil/opt.h" +#include "internal.h" +#include "cabac.h" +#include "cabac_functions.h" +#include "dsputil.h" +#include "error_resilience.h" +#include "avcodec.h" +#include "mpegvideo.h" +#include "h264.h" +#include "h264data.h" +#include "h264chroma.h" +#include "h264_mvpred.h" +#include "golomb.h" +#include "mathops.h" +#include "rectangle.h" +#include "svq3.h" +#include "thread.h" +#include "vdpau_internal.h" +#include "libavutil/avassert.h" + +// #undef NDEBUG +#include <assert.h> + +const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 }; + +static const uint8_t rem6[QP_MAX_NUM + 1] = { + 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, + 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, + 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, + 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, + 0, 1, 2, 3, +}; + +static const uint8_t div6[QP_MAX_NUM + 1] = { + 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, + 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, + 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, + 10,10,10,11,11,11,11,11,11,12,12,12,12,12,12,13,13,13, 13, 13, 13, + 14,14,14,14, +}; + +static const enum AVPixelFormat h264_hwaccel_pixfmt_list_420[] = { +#if CONFIG_H264_DXVA2_HWACCEL + AV_PIX_FMT_DXVA2_VLD, +#endif +#if CONFIG_H264_VAAPI_HWACCEL + AV_PIX_FMT_VAAPI_VLD, +#endif +#if CONFIG_H264_VDA_HWACCEL + AV_PIX_FMT_VDA_VLD, +#endif +#if CONFIG_H264_VDPAU_HWACCEL + AV_PIX_FMT_VDPAU, +#endif + AV_PIX_FMT_YUV420P, + AV_PIX_FMT_NONE +}; + +static const enum AVPixelFormat h264_hwaccel_pixfmt_list_jpeg_420[] = { +#if CONFIG_H264_DXVA2_HWACCEL + AV_PIX_FMT_DXVA2_VLD, +#endif +#if CONFIG_H264_VAAPI_HWACCEL + AV_PIX_FMT_VAAPI_VLD, +#endif +#if CONFIG_H264_VDA_HWACCEL + AV_PIX_FMT_VDA_VLD, +#endif +#if CONFIG_H264_VDPAU_HWACCEL + AV_PIX_FMT_VDPAU, +#endif + AV_PIX_FMT_YUVJ420P, + AV_PIX_FMT_NONE +}; + +int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx) +{ + H264Context *h = avctx->priv_data; + return h ? h->sps.num_reorder_frames : 0; +} + +static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type, + int (*mv)[2][4][2], + int mb_x, int mb_y, int mb_intra, int mb_skipped) +{ + H264Context *h = opaque; + + h->mb_x = mb_x; + h->mb_y = mb_y; + h->mb_xy = mb_x + mb_y * h->mb_stride; + memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache)); + av_assert1(ref >= 0); + /* FIXME: It is possible albeit uncommon that slice references + * differ between slices. We take the easy approach and ignore + * it for now. If this turns out to have any relevance in + * practice then correct remapping should be added. */ + if (ref >= h->ref_count[0]) + ref = 0; + if (!h->ref_list[0][ref].f.data[0]) { + av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n"); + ref = 0; + } + if ((h->ref_list[0][ref].reference&3) != 3) { + av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n"); + return; + } + fill_rectangle(&h->cur_pic.ref_index[0][4 * h->mb_xy], + 2, 2, 2, ref, 1); + fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1); + fill_rectangle(h->mv_cache[0][scan8[0]], 4, 4, 8, + pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4); + h->mb_mbaff = + h->mb_field_decoding_flag = 0; + ff_h264_hl_decode_mb(h); +} + +void ff_h264_draw_horiz_band(H264Context *h, int y, int height) +{ + AVCodecContext *avctx = h->avctx; + Picture *cur = &h->cur_pic; + Picture *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0] : NULL; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); + int vshift = desc->log2_chroma_h; + const int field_pic = h->picture_structure != PICT_FRAME; + if (field_pic) { + height <<= 1; + y <<= 1; + } + + height = FFMIN(height, avctx->height - y); + + if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD)) + return; + + if (avctx->draw_horiz_band) { + AVFrame *src; + int offset[AV_NUM_DATA_POINTERS]; + int i; + + if (cur->f.pict_type == AV_PICTURE_TYPE_B || h->low_delay || + (avctx->slice_flags & SLICE_FLAG_CODED_ORDER)) + src = &cur->f; + else if (last) + src = &last->f; + else + return; + + offset[0] = y * src->linesize[0]; + offset[1] = + offset[2] = (y >> vshift) * src->linesize[1]; + for (i = 3; i < AV_NUM_DATA_POINTERS; i++) + offset[i] = 0; + + emms_c(); + + avctx->draw_horiz_band(avctx, src, offset, + y, h->picture_structure, height); + } +} + +static void unref_picture(H264Context *h, Picture *pic) +{ + int off = offsetof(Picture, tf) + sizeof(pic->tf); + int i; + + if (!pic->f.data[0]) + return; + + ff_thread_release_buffer(h->avctx, &pic->tf); + av_buffer_unref(&pic->hwaccel_priv_buf); + + av_buffer_unref(&pic->qscale_table_buf); + av_buffer_unref(&pic->mb_type_buf); + for (i = 0; i < 2; i++) { + av_buffer_unref(&pic->motion_val_buf[i]); + av_buffer_unref(&pic->ref_index_buf[i]); + } + + memset((uint8_t*)pic + off, 0, sizeof(*pic) - off); +} + +static void release_unused_pictures(H264Context *h, int remove_current) +{ + int i; + + /* release non reference frames */ + for (i = 0; i < MAX_PICTURE_COUNT; i++) { + if (h->DPB[i].f.data[0] && !h->DPB[i].reference && + (remove_current || &h->DPB[i] != h->cur_pic_ptr)) { + unref_picture(h, &h->DPB[i]); + } + } +} + +static int ref_picture(H264Context *h, Picture *dst, Picture *src) +{ + int ret, i; + + av_assert0(!dst->f.buf[0]); + av_assert0(src->f.buf[0]); + + src->tf.f = &src->f; + dst->tf.f = &dst->f; + ret = ff_thread_ref_frame(&dst->tf, &src->tf); + if (ret < 0) + goto fail; + + + dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf); + dst->mb_type_buf = av_buffer_ref(src->mb_type_buf); + if (!dst->qscale_table_buf || !dst->mb_type_buf) + goto fail; + dst->qscale_table = src->qscale_table; + dst->mb_type = src->mb_type; + + for (i = 0; i < 2; i ++) { + dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]); + dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]); + if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i]) + goto fail; + dst->motion_val[i] = src->motion_val[i]; + dst->ref_index[i] = src->ref_index[i]; + } + + if (src->hwaccel_picture_private) { + dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf); + if (!dst->hwaccel_priv_buf) + goto fail; + dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data; + } + + for (i = 0; i < 2; i++) + dst->field_poc[i] = src->field_poc[i]; + + memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc)); + memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count)); + + dst->poc = src->poc; + dst->frame_num = src->frame_num; + dst->mmco_reset = src->mmco_reset; + dst->pic_id = src->pic_id; + dst->long_ref = src->long_ref; + dst->mbaff = src->mbaff; + dst->field_picture = src->field_picture; + dst->needs_realloc = src->needs_realloc; + dst->reference = src->reference; + dst->sync = src->sync; + + return 0; +fail: + unref_picture(h, dst); + return ret; +} + + +static int alloc_scratch_buffers(H264Context *h, int linesize) +{ + int alloc_size = FFALIGN(FFABS(linesize) + 32, 32); + + if (h->bipred_scratchpad) + return 0; + + h->bipred_scratchpad = av_malloc(16 * 6 * alloc_size); + // edge emu needs blocksize + filter length - 1 + // (= 21x21 for h264) + h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 21); + h->me.scratchpad = av_mallocz(alloc_size * 2 * 16 * 2); + + if (!h->bipred_scratchpad || !h->edge_emu_buffer || !h->me.scratchpad) { + av_freep(&h->bipred_scratchpad); + av_freep(&h->edge_emu_buffer); + av_freep(&h->me.scratchpad); + return AVERROR(ENOMEM); + } + + h->me.temp = h->me.scratchpad; + + return 0; +} + +static int init_table_pools(H264Context *h) +{ + const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1; + const int mb_array_size = h->mb_stride * h->mb_height; + const int b4_stride = h->mb_width * 4 + 1; + const int b4_array_size = b4_stride * h->mb_height * 4; + + h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride, + av_buffer_allocz); + h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) * + sizeof(uint32_t), av_buffer_allocz); + h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) * + sizeof(int16_t), av_buffer_allocz); + h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz); + + if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool || + !h->ref_index_pool) { + av_buffer_pool_uninit(&h->qscale_table_pool); + av_buffer_pool_uninit(&h->mb_type_pool); + av_buffer_pool_uninit(&h->motion_val_pool); + av_buffer_pool_uninit(&h->ref_index_pool); + return AVERROR(ENOMEM); + } + + return 0; +} + +static int alloc_picture(H264Context *h, Picture *pic) +{ + int i, ret = 0; + + av_assert0(!pic->f.data[0]); + + pic->tf.f = &pic->f; + ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ? + AV_GET_BUFFER_FLAG_REF : 0); + if (ret < 0) + goto fail; + + h->linesize = pic->f.linesize[0]; + h->uvlinesize = pic->f.linesize[1]; + + if (h->avctx->hwaccel) { + const AVHWAccel *hwaccel = h->avctx->hwaccel; + av_assert0(!pic->hwaccel_picture_private); + if (hwaccel->priv_data_size) { + pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->priv_data_size); + if (!pic->hwaccel_priv_buf) + return AVERROR(ENOMEM); + pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data; + } + } + + if (!h->qscale_table_pool) { + ret = init_table_pools(h); + if (ret < 0) + goto fail; + } + + pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool); + pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool); + if (!pic->qscale_table_buf || !pic->mb_type_buf) + goto fail; + + pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1; + pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1; + + for (i = 0; i < 2; i++) { + pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool); + pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool); + if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i]) + goto fail; + + pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4; + pic->ref_index[i] = pic->ref_index_buf[i]->data; + } + + return 0; +fail: + unref_picture(h, pic); + return (ret < 0) ? ret : AVERROR(ENOMEM); +} + +static inline int pic_is_unused(H264Context *h, Picture *pic) +{ + if (pic->f.data[0] == NULL) + return 1; + if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF)) + return 1; + return 0; +} + +static int find_unused_picture(H264Context *h) +{ + int i; + + for (i = 0; i < MAX_PICTURE_COUNT; i++) { + if (pic_is_unused(h, &h->DPB[i])) + break; + } + if (i == MAX_PICTURE_COUNT) + return AVERROR_INVALIDDATA; + + if (h->DPB[i].needs_realloc) { + h->DPB[i].needs_realloc = 0; + unref_picture(h, &h->DPB[i]); + } + + return i; +} + +/** + * Check if the top & left blocks are available if needed and + * change the dc mode so it only uses the available blocks. + */ +int ff_h264_check_intra4x4_pred_mode(H264Context *h) +{ + static const int8_t top[12] = { + -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0 + }; + static const int8_t left[12] = { + 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED + }; + int i; + + if (!(h->top_samples_available & 0x8000)) { + for (i = 0; i < 4; i++) { + int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]]; + if (status < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "top block unavailable for requested intra4x4 mode %d at %d %d\n", + status, h->mb_x, h->mb_y); + return -1; + } else if (status) { + h->intra4x4_pred_mode_cache[scan8[0] + i] = status; + } + } + } + + if ((h->left_samples_available & 0x8888) != 0x8888) { + static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 }; + for (i = 0; i < 4; i++) + if (!(h->left_samples_available & mask[i])) { + int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]]; + if (status < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "left block unavailable for requested intra4x4 mode %d at %d %d\n", + status, h->mb_x, h->mb_y); + return -1; + } else if (status) { + h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status; + } + } + } + + return 0; +} // FIXME cleanup like ff_h264_check_intra_pred_mode + +/** + * Check if the top & left blocks are available if needed and + * change the dc mode so it only uses the available blocks. + */ +int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma) +{ + static const int8_t top[7] = { LEFT_DC_PRED8x8, 1, -1, -1 }; + static const int8_t left[7] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 }; + + if (mode > 6U) { + av_log(h->avctx, AV_LOG_ERROR, + "out of range intra chroma pred mode at %d %d\n", + h->mb_x, h->mb_y); + return -1; + } + + if (!(h->top_samples_available & 0x8000)) { + mode = top[mode]; + if (mode < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "top block unavailable for requested intra mode at %d %d\n", + h->mb_x, h->mb_y); + return -1; + } + } + + if ((h->left_samples_available & 0x8080) != 0x8080) { + mode = left[mode]; + if (is_chroma && (h->left_samples_available & 0x8080)) { + // mad cow disease mode, aka MBAFF + constrained_intra_pred + mode = ALZHEIMER_DC_L0T_PRED8x8 + + (!(h->left_samples_available & 0x8000)) + + 2 * (mode == DC_128_PRED8x8); + } + if (mode < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "left block unavailable for requested intra mode at %d %d\n", + h->mb_x, h->mb_y); + return -1; + } + } + + return mode; +} + +const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src, + int *dst_length, int *consumed, int length) +{ + int i, si, di; + uint8_t *dst; + int bufidx; + + // src[0]&0x80; // forbidden bit + h->nal_ref_idc = src[0] >> 5; + h->nal_unit_type = src[0] & 0x1F; + + src++; + length--; + +#define STARTCODE_TEST \ + if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \ + if (src[i + 2] != 3) { \ + /* startcode, so we must be past the end */ \ + length = i; \ + } \ + break; \ + } +#if HAVE_FAST_UNALIGNED +#define FIND_FIRST_ZERO \ + if (i > 0 && !src[i]) \ + i--; \ + while (src[i]) \ + i++ +#if HAVE_FAST_64BIT + for (i = 0; i + 1 < length; i += 9) { + if (!((~AV_RN64A(src + i) & + (AV_RN64A(src + i) - 0x0100010001000101ULL)) & + 0x8000800080008080ULL)) + continue; + FIND_FIRST_ZERO; + STARTCODE_TEST; + i -= 7; + } +#else + for (i = 0; i + 1 < length; i += 5) { + if (!((~AV_RN32A(src + i) & + (AV_RN32A(src + i) - 0x01000101U)) & + 0x80008080U)) + continue; + FIND_FIRST_ZERO; + STARTCODE_TEST; + i -= 3; + } +#endif +#else + for (i = 0; i + 1 < length; i += 2) { + if (src[i]) + continue; + if (i > 0 && src[i - 1] == 0) + i--; + STARTCODE_TEST; + } +#endif + + // use second escape buffer for inter data + bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0; + + si = h->rbsp_buffer_size[bufidx]; + av_fast_padded_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+MAX_MBPAIR_SIZE); + dst = h->rbsp_buffer[bufidx]; + + if (dst == NULL) + return NULL; + + if(i>=length-1){ //no escaped 0 + *dst_length= length; + *consumed= length+1; //+1 for the header + if(h->avctx->flags2 & CODEC_FLAG2_FAST){ + return src; + }else{ + memcpy(dst, src, length); + return dst; + } + } + + memcpy(dst, src, i); + si = di = i; + while (si + 2 < length) { + // remove escapes (very rare 1:2^22) + if (src[si + 2] > 3) { + dst[di++] = src[si++]; + dst[di++] = src[si++]; + } else if (src[si] == 0 && src[si + 1] == 0) { + if (src[si + 2] == 3) { // escape + dst[di++] = 0; + dst[di++] = 0; + si += 3; + continue; + } else // next start code + goto nsc; + } + + dst[di++] = src[si++]; + } + while (si < length) + dst[di++] = src[si++]; +nsc: + + memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE); + + *dst_length = di; + *consumed = si + 1; // +1 for the header + /* FIXME store exact number of bits in the getbitcontext + * (it is needed for decoding) */ + return dst; +} + +/** + * Identify the exact end of the bitstream + * @return the length of the trailing, or 0 if damaged + */ +static int decode_rbsp_trailing(H264Context *h, const uint8_t *src) +{ + int v = *src; + int r; + + tprintf(h->avctx, "rbsp trailing %X\n", v); + + for (r = 1; r < 9; r++) { + if (v & 1) + return r; + v >>= 1; + } + return 0; +} + +static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n, + int height, int y_offset, int list) +{ + int raw_my = h->mv_cache[list][scan8[n]][1]; + int filter_height_down = (raw_my & 3) ? 3 : 0; + int full_my = (raw_my >> 2) + y_offset; + int bottom = full_my + filter_height_down + height; + + av_assert2(height >= 0); + + return FFMAX(0, bottom); +} + +static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n, + int height, int y_offset, int list0, + int list1, int *nrefs) +{ + int my; + + y_offset += 16 * (h->mb_y >> MB_FIELD(h)); + + if (list0) { + int ref_n = h->ref_cache[0][scan8[n]]; + Picture *ref = &h->ref_list[0][ref_n]; + + // Error resilience puts the current picture in the ref list. + // Don't try to wait on these as it will cause a deadlock. + // Fields can wait on each other, though. + if (ref->tf.progress->data != h->cur_pic.tf.progress->data || + (ref->reference & 3) != h->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0); + if (refs[0][ref_n] < 0) + nrefs[0] += 1; + refs[0][ref_n] = FFMAX(refs[0][ref_n], my); + } + } + + if (list1) { + int ref_n = h->ref_cache[1][scan8[n]]; + Picture *ref = &h->ref_list[1][ref_n]; + + if (ref->tf.progress->data != h->cur_pic.tf.progress->data || + (ref->reference & 3) != h->picture_structure) { + my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1); + if (refs[1][ref_n] < 0) + nrefs[1] += 1; + refs[1][ref_n] = FFMAX(refs[1][ref_n], my); + } + } +} + +/** + * Wait until all reference frames are available for MC operations. + * + * @param h the H264 context + */ +static void await_references(H264Context *h) +{ + const int mb_xy = h->mb_xy; + const int mb_type = h->cur_pic.mb_type[mb_xy]; + int refs[2][48]; + int nrefs[2] = { 0 }; + int ref, list; + + memset(refs, -1, sizeof(refs)); + + if (IS_16X16(mb_type)) { + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + } else if (IS_16X8(mb_type)) { + get_lowest_part_y(h, refs, 0, 8, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 8, 8, 8, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + } else if (IS_8X16(mb_type)) { + get_lowest_part_y(h, refs, 0, 16, 0, + IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs); + get_lowest_part_y(h, refs, 4, 16, 0, + IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs); + } else { + int i; + + av_assert2(IS_8X8(mb_type)); + + for (i = 0; i < 4; i++) { + const int sub_mb_type = h->sub_mb_type[i]; + const int n = 4 * i; + int y_offset = (i & 2) << 2; + + if (IS_SUB_8X8(sub_mb_type)) { + get_lowest_part_y(h, refs, n, 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + } else if (IS_SUB_8X4(sub_mb_type)) { + get_lowest_part_y(h, refs, n, 4, y_offset, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + } else if (IS_SUB_4X8(sub_mb_type)) { + get_lowest_part_y(h, refs, n, 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + get_lowest_part_y(h, refs, n + 1, 8, y_offset, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + } else { + int j; + av_assert2(IS_SUB_4X4(sub_mb_type)); + for (j = 0; j < 4; j++) { + int sub_y_offset = y_offset + 2 * (j & 2); + get_lowest_part_y(h, refs, n + j, 4, sub_y_offset, + IS_DIR(sub_mb_type, 0, 0), + IS_DIR(sub_mb_type, 0, 1), + nrefs); + } + } + } + } + + for (list = h->list_count - 1; list >= 0; list--) + for (ref = 0; ref < 48 && nrefs[list]; ref++) { + int row = refs[list][ref]; + if (row >= 0) { + Picture *ref_pic = &h->ref_list[list][ref]; + int ref_field = ref_pic->reference - 1; + int ref_field_picture = ref_pic->field_picture; + int pic_height = 16 * h->mb_height >> ref_field_picture; + + row <<= MB_MBAFF(h); + nrefs[list]--; + + if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields + ff_thread_await_progress(&ref_pic->tf, + FFMIN((row >> 1) - !(row & 1), + pic_height - 1), + 1); + ff_thread_await_progress(&ref_pic->tf, + FFMIN((row >> 1), pic_height - 1), + 0); + } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame + ff_thread_await_progress(&ref_pic->tf, + FFMIN(row * 2 + ref_field, + pic_height - 1), + 0); + } else if (FIELD_PICTURE(h)) { + ff_thread_await_progress(&ref_pic->tf, + FFMIN(row, pic_height - 1), + ref_field); + } else { + ff_thread_await_progress(&ref_pic->tf, + FFMIN(row, pic_height - 1), + 0); + } + } + } +} + +static av_always_inline void mc_dir_part(H264Context *h, Picture *pic, + int n, int square, int height, + int delta, int list, + uint8_t *dest_y, uint8_t *dest_cb, + uint8_t *dest_cr, + int src_x_offset, int src_y_offset, + qpel_mc_func *qpix_op, + h264_chroma_mc_func chroma_op, + int pixel_shift, int chroma_idc) +{ + const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8; + int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8; + const int luma_xy = (mx & 3) + ((my & 3) << 2); + int offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize; + uint8_t *src_y = pic->f.data[0] + offset; + uint8_t *src_cb, *src_cr; + int extra_width = 0; + int extra_height = 0; + int emu = 0; + const int full_mx = mx >> 2; + const int full_my = my >> 2; + const int pic_width = 16 * h->mb_width; + const int pic_height = 16 * h->mb_height >> MB_FIELD(h); + int ysh; + + if (mx & 7) + extra_width -= 3; + if (my & 7) + extra_height -= 3; + + if (full_mx < 0 - extra_width || + full_my < 0 - extra_height || + full_mx + 16 /*FIXME*/ > pic_width + extra_width || + full_my + 16 /*FIXME*/ > pic_height + extra_height) { + h->vdsp.emulated_edge_mc(h->edge_emu_buffer, + src_y - (2 << pixel_shift) - 2 * h->mb_linesize, + h->mb_linesize, + 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2, + full_my - 2, pic_width, pic_height); + src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize; + emu = 1; + } + + qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps? + if (!square) + qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize); + + if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY) + return; + + if (chroma_idc == 3 /* yuv444 */) { + src_cb = pic->f.data[1] + offset; + if (emu) { + h->vdsp.emulated_edge_mc(h->edge_emu_buffer, + src_cb - (2 << pixel_shift) - 2 * h->mb_linesize, + h->mb_linesize, + 16 + 5, 16 + 5 /*FIXME*/, + full_mx - 2, full_my - 2, + pic_width, pic_height); + src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize; + } + qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps? + if (!square) + qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize); + + src_cr = pic->f.data[2] + offset; + if (emu) { + h->vdsp.emulated_edge_mc(h->edge_emu_buffer, + src_cr - (2 << pixel_shift) - 2 * h->mb_linesize, + h->mb_linesize, + 16 + 5, 16 + 5 /*FIXME*/, + full_mx - 2, full_my - 2, + pic_width, pic_height); + src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize; + } + qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps? + if (!square) + qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize); + return; + } + + ysh = 3 - (chroma_idc == 2 /* yuv422 */); + if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) { + // chroma offset when predicting from a field of opposite parity + my += 2 * ((h->mb_y & 1) - (pic->reference - 1)); + emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1); + } + + src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) + + (my >> ysh) * h->mb_uvlinesize; + src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) + + (my >> ysh) * h->mb_uvlinesize; + + if (emu) { + h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb, h->mb_uvlinesize, + 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh), + pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */)); + src_cb = h->edge_emu_buffer; + } + chroma_op(dest_cb, src_cb, h->mb_uvlinesize, + height >> (chroma_idc == 1 /* yuv420 */), + mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7); + + if (emu) { + h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr, h->mb_uvlinesize, + 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh), + pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */)); + src_cr = h->edge_emu_buffer; + } + chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */), + mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7); +} + +static av_always_inline void mc_part_std(H264Context *h, int n, int square, + int height, int delta, + uint8_t *dest_y, uint8_t *dest_cb, + uint8_t *dest_cr, + int x_offset, int y_offset, + qpel_mc_func *qpix_put, + h264_chroma_mc_func chroma_put, + qpel_mc_func *qpix_avg, + h264_chroma_mc_func chroma_avg, + int list0, int list1, + int pixel_shift, int chroma_idc) +{ + qpel_mc_func *qpix_op = qpix_put; + h264_chroma_mc_func chroma_op = chroma_put; + + dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + if (chroma_idc == 3 /* yuv444 */) { + dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + } else if (chroma_idc == 2 /* yuv422 */) { + dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize; + dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize; + } else { /* yuv420 */ + dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize; + dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize; + } + x_offset += 8 * h->mb_x; + y_offset += 8 * (h->mb_y >> MB_FIELD(h)); + + if (list0) { + Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]]; + mc_dir_part(h, ref, n, square, height, delta, 0, + dest_y, dest_cb, dest_cr, x_offset, y_offset, + qpix_op, chroma_op, pixel_shift, chroma_idc); + + qpix_op = qpix_avg; + chroma_op = chroma_avg; + } + + if (list1) { + Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]]; + mc_dir_part(h, ref, n, square, height, delta, 1, + dest_y, dest_cb, dest_cr, x_offset, y_offset, + qpix_op, chroma_op, pixel_shift, chroma_idc); + } +} + +static av_always_inline void mc_part_weighted(H264Context *h, int n, int square, + int height, int delta, + uint8_t *dest_y, uint8_t *dest_cb, + uint8_t *dest_cr, + int x_offset, int y_offset, + qpel_mc_func *qpix_put, + h264_chroma_mc_func chroma_put, + h264_weight_func luma_weight_op, + h264_weight_func chroma_weight_op, + h264_biweight_func luma_weight_avg, + h264_biweight_func chroma_weight_avg, + int list0, int list1, + int pixel_shift, int chroma_idc) +{ + int chroma_height; + + dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + if (chroma_idc == 3 /* yuv444 */) { + chroma_height = height; + chroma_weight_avg = luma_weight_avg; + chroma_weight_op = luma_weight_op; + dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize; + } else if (chroma_idc == 2 /* yuv422 */) { + chroma_height = height; + dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize; + dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize; + } else { /* yuv420 */ + chroma_height = height >> 1; + dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize; + dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize; + } + x_offset += 8 * h->mb_x; + y_offset += 8 * (h->mb_y >> MB_FIELD(h)); + + if (list0 && list1) { + /* don't optimize for luma-only case, since B-frames usually + * use implicit weights => chroma too. */ + uint8_t *tmp_cb = h->bipred_scratchpad; + uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift); + uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize; + int refn0 = h->ref_cache[0][scan8[n]]; + int refn1 = h->ref_cache[1][scan8[n]]; + + mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0, + dest_y, dest_cb, dest_cr, + x_offset, y_offset, qpix_put, chroma_put, + pixel_shift, chroma_idc); + mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1, + tmp_y, tmp_cb, tmp_cr, + x_offset, y_offset, qpix_put, chroma_put, + pixel_shift, chroma_idc); + + if (h->use_weight == 2) { + int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1]; + int weight1 = 64 - weight0; + luma_weight_avg(dest_y, tmp_y, h->mb_linesize, + height, 5, weight0, weight1, 0); + chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, + chroma_height, 5, weight0, weight1, 0); + chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, + chroma_height, 5, weight0, weight1, 0); + } else { + luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height, + h->luma_log2_weight_denom, + h->luma_weight[refn0][0][0], + h->luma_weight[refn1][1][0], + h->luma_weight[refn0][0][1] + + h->luma_weight[refn1][1][1]); + chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height, + h->chroma_log2_weight_denom, + h->chroma_weight[refn0][0][0][0], + h->chroma_weight[refn1][1][0][0], + h->chroma_weight[refn0][0][0][1] + + h->chroma_weight[refn1][1][0][1]); + chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height, + h->chroma_log2_weight_denom, + h->chroma_weight[refn0][0][1][0], + h->chroma_weight[refn1][1][1][0], + h->chroma_weight[refn0][0][1][1] + + h->chroma_weight[refn1][1][1][1]); + } + } else { + int list = list1 ? 1 : 0; + int refn = h->ref_cache[list][scan8[n]]; + Picture *ref = &h->ref_list[list][refn]; + mc_dir_part(h, ref, n, square, height, delta, list, + dest_y, dest_cb, dest_cr, x_offset, y_offset, + qpix_put, chroma_put, pixel_shift, chroma_idc); + + luma_weight_op(dest_y, h->mb_linesize, height, + h->luma_log2_weight_denom, + h->luma_weight[refn][list][0], + h->luma_weight[refn][list][1]); + if (h->use_weight_chroma) { + chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height, + h->chroma_log2_weight_denom, + h->chroma_weight[refn][list][0][0], + h->chroma_weight[refn][list][0][1]); + chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height, + h->chroma_log2_weight_denom, + h->chroma_weight[refn][list][1][0], + h->chroma_weight[refn][list][1][1]); + } + } +} + +static av_always_inline void prefetch_motion(H264Context *h, int list, + int pixel_shift, int chroma_idc) +{ + /* fetch pixels for estimated mv 4 macroblocks ahead + * optimized for 64byte cache lines */ + const int refn = h->ref_cache[list][scan8[0]]; + if (refn >= 0) { + const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8; + const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y; + uint8_t **src = h->ref_list[list][refn].f.data; + int off = (mx << pixel_shift) + + (my + (h->mb_x & 3) * 4) * h->mb_linesize + + (64 << pixel_shift); + h->vdsp.prefetch(src[0] + off, h->linesize, 4); + if (chroma_idc == 3 /* yuv444 */) { + h->vdsp.prefetch(src[1] + off, h->linesize, 4); + h->vdsp.prefetch(src[2] + off, h->linesize, 4); + } else { + off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (h->mb_x&7))*h->uvlinesize; + h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2); + } + } +} + +static void free_tables(H264Context *h, int free_rbsp) +{ + int i; + H264Context *hx; + + av_freep(&h->intra4x4_pred_mode); + av_freep(&h->chroma_pred_mode_table); + av_freep(&h->cbp_table); + av_freep(&h->mvd_table[0]); + av_freep(&h->mvd_table[1]); + av_freep(&h->direct_table); + av_freep(&h->non_zero_count); + av_freep(&h->slice_table_base); + h->slice_table = NULL; + av_freep(&h->list_counts); + + av_freep(&h->mb2b_xy); + av_freep(&h->mb2br_xy); + + for (i = 0; i < 3; i++) + av_freep(&h->visualization_buffer[i]); + + av_buffer_pool_uninit(&h->qscale_table_pool); + av_buffer_pool_uninit(&h->mb_type_pool); + av_buffer_pool_uninit(&h->motion_val_pool); + av_buffer_pool_uninit(&h->ref_index_pool); + + if (free_rbsp && h->DPB) { + for (i = 0; i < MAX_PICTURE_COUNT; i++) + unref_picture(h, &h->DPB[i]); + av_freep(&h->DPB); + } else if (h->DPB) { + for (i = 0; i < MAX_PICTURE_COUNT; i++) + h->DPB[i].needs_realloc = 1; + } + + h->cur_pic_ptr = NULL; + + for (i = 0; i < MAX_THREADS; i++) { + hx = h->thread_context[i]; + if (!hx) + continue; + av_freep(&hx->top_borders[1]); + av_freep(&hx->top_borders[0]); + av_freep(&hx->bipred_scratchpad); + av_freep(&hx->edge_emu_buffer); + av_freep(&hx->dc_val_base); + av_freep(&hx->me.scratchpad); + av_freep(&hx->er.mb_index2xy); + av_freep(&hx->er.error_status_table); + av_freep(&hx->er.er_temp_buffer); + av_freep(&hx->er.mbintra_table); + av_freep(&hx->er.mbskip_table); + + if (free_rbsp) { + av_freep(&hx->rbsp_buffer[1]); + av_freep(&hx->rbsp_buffer[0]); + hx->rbsp_buffer_size[0] = 0; + hx->rbsp_buffer_size[1] = 0; + } + if (i) + av_freep(&h->thread_context[i]); + } +} + +static void init_dequant8_coeff_table(H264Context *h) +{ + int i, j, q, x; + const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8); + + for (i = 0; i < 6; i++) { + h->dequant8_coeff[i] = h->dequant8_buffer[i]; + for (j = 0; j < i; j++) + if (!memcmp(h->pps.scaling_matrix8[j], h->pps.scaling_matrix8[i], + 64 * sizeof(uint8_t))) { + h->dequant8_coeff[i] = h->dequant8_buffer[j]; + break; + } + if (j < i) + continue; + + for (q = 0; q < max_qp + 1; q++) { + int shift = div6[q]; + int idx = rem6[q]; + for (x = 0; x < 64; x++) + h->dequant8_coeff[i][q][(x >> 3) | ((x & 7) << 3)] = + ((uint32_t)dequant8_coeff_init[idx][dequant8_coeff_init_scan[((x >> 1) & 12) | (x & 3)]] * + h->pps.scaling_matrix8[i][x]) << shift; + } + } +} + +static void init_dequant4_coeff_table(H264Context *h) +{ + int i, j, q, x; + const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8); + for (i = 0; i < 6; i++) { + h->dequant4_coeff[i] = h->dequant4_buffer[i]; + for (j = 0; j < i; j++) + if (!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i], + 16 * sizeof(uint8_t))) { + h->dequant4_coeff[i] = h->dequant4_buffer[j]; + break; + } + if (j < i) + continue; + + for (q = 0; q < max_qp + 1; q++) { + int shift = div6[q] + 2; + int idx = rem6[q]; + for (x = 0; x < 16; x++) + h->dequant4_coeff[i][q][(x >> 2) | ((x << 2) & 0xF)] = + ((uint32_t)dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] * + h->pps.scaling_matrix4[i][x]) << shift; + } + } +} + +static void init_dequant_tables(H264Context *h) +{ + int i, x; + init_dequant4_coeff_table(h); + if (h->pps.transform_8x8_mode) + init_dequant8_coeff_table(h); + if (h->sps.transform_bypass) { + for (i = 0; i < 6; i++) + for (x = 0; x < 16; x++) + h->dequant4_coeff[i][0][x] = 1 << 6; + if (h->pps.transform_8x8_mode) + for (i = 0; i < 6; i++) + for (x = 0; x < 64; x++) + h->dequant8_coeff[i][0][x] = 1 << 6; + } +} + +int ff_h264_alloc_tables(H264Context *h) +{ + const int big_mb_num = h->mb_stride * (h->mb_height + 1); + const int row_mb_num = 2*h->mb_stride*FFMAX(h->avctx->thread_count, 1); + int x, y, i; + + FF_ALLOCZ_OR_GOTO(h->avctx, h->intra4x4_pred_mode, + row_mb_num * 8 * sizeof(uint8_t), fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count, + big_mb_num * 48 * sizeof(uint8_t), fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base, + (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table, + big_mb_num * sizeof(uint16_t), fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table, + big_mb_num * sizeof(uint8_t), fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[0], + 16 * row_mb_num * sizeof(uint8_t), fail); + FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[1], + 16 * row_mb_num * sizeof(uint8_t), fail); + FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table, + 4 * big_mb_num * sizeof(uint8_t), fail); + FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts, + big_mb_num * sizeof(uint8_t), fail) + + memset(h->slice_table_base, -1, + (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base)); + h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1; + + FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy, + big_mb_num * sizeof(uint32_t), fail); + FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy, + big_mb_num * sizeof(uint32_t), fail); + for (y = 0; y < h->mb_height; y++) + for (x = 0; x < h->mb_width; x++) { + const int mb_xy = x + y * h->mb_stride; + const int b_xy = 4 * x + 4 * y * h->b_stride; + + h->mb2b_xy[mb_xy] = b_xy; + h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride))); + } + + if (!h->dequant4_coeff[0]) + init_dequant_tables(h); + + if (!h->DPB) { + h->DPB = av_mallocz_array(MAX_PICTURE_COUNT, sizeof(*h->DPB)); + if (!h->DPB) + return AVERROR(ENOMEM); + for (i = 0; i < MAX_PICTURE_COUNT; i++) + avcodec_get_frame_defaults(&h->DPB[i].f); + avcodec_get_frame_defaults(&h->cur_pic.f); + } + + return 0; + +fail: + free_tables(h, 1); + return -1; +} + +/** + * Mimic alloc_tables(), but for every context thread. + */ +static void clone_tables(H264Context *dst, H264Context *src, int i) +{ + dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i * 8 * 2 * src->mb_stride; + dst->non_zero_count = src->non_zero_count; + dst->slice_table = src->slice_table; + dst->cbp_table = src->cbp_table; + dst->mb2b_xy = src->mb2b_xy; + dst->mb2br_xy = src->mb2br_xy; + dst->chroma_pred_mode_table = src->chroma_pred_mode_table; + dst->mvd_table[0] = src->mvd_table[0] + i * 8 * 2 * src->mb_stride; + dst->mvd_table[1] = src->mvd_table[1] + i * 8 * 2 * src->mb_stride; + dst->direct_table = src->direct_table; + dst->list_counts = src->list_counts; + dst->DPB = src->DPB; + dst->cur_pic_ptr = src->cur_pic_ptr; + dst->cur_pic = src->cur_pic; + dst->bipred_scratchpad = NULL; + dst->edge_emu_buffer = NULL; + dst->me.scratchpad = NULL; + ff_h264_pred_init(&dst->hpc, src->avctx->codec_id, src->sps.bit_depth_luma, + src->sps.chroma_format_idc); +} + +/** + * Init context + * Allocate buffers which are not shared amongst multiple threads. + */ +static int context_init(H264Context *h) +{ + ERContext *er = &h->er; + int mb_array_size = h->mb_height * h->mb_stride; + int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1); + int c_size = h->mb_stride * (h->mb_height + 1); + int yc_size = y_size + 2 * c_size; + int x, y, i; + + FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[0], + h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail) + FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[1], + h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail) + + h->ref_cache[0][scan8[5] + 1] = + h->ref_cache[0][scan8[7] + 1] = + h->ref_cache[0][scan8[13] + 1] = + h->ref_cache[1][scan8[5] + 1] = + h->ref_cache[1][scan8[7] + 1] = + h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE; + + if (CONFIG_ERROR_RESILIENCE) { + /* init ER */ + er->avctx = h->avctx; + er->dsp = &h->dsp; + er->decode_mb = h264_er_decode_mb; + er->opaque = h; + er->quarter_sample = 1; + + er->mb_num = h->mb_num; + er->mb_width = h->mb_width; + er->mb_height = h->mb_height; + er->mb_stride = h->mb_stride; + er->b8_stride = h->mb_width * 2 + 1; + + FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy, (h->mb_num + 1) * sizeof(int), + fail); // error ressilience code looks cleaner with this + for (y = 0; y < h->mb_height; y++) + for (x = 0; x < h->mb_width; x++) + er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride; + + er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) * + h->mb_stride + h->mb_width; + + FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table, + mb_array_size * sizeof(uint8_t), fail); + + FF_ALLOC_OR_GOTO(h->avctx, er->mbintra_table, mb_array_size, fail); + memset(er->mbintra_table, 1, mb_array_size); + + FF_ALLOCZ_OR_GOTO(h->avctx, er->mbskip_table, mb_array_size + 2, fail); + + FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer, h->mb_height * h->mb_stride, + fail); + + FF_ALLOCZ_OR_GOTO(h->avctx, h->dc_val_base, yc_size * sizeof(int16_t), fail); + er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2; + er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1; + er->dc_val[2] = er->dc_val[1] + c_size; + for (i = 0; i < yc_size; i++) + h->dc_val_base[i] = 1024; + } + + return 0; + +fail: + return -1; // free_tables will clean up for us +} + +static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, + int parse_extradata); + +int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size) +{ + AVCodecContext *avctx = h->avctx; + + if (!buf || size <= 0) + return -1; + + if (buf[0] == 1) { + int i, cnt, nalsize; + const unsigned char *p = buf; + + h->is_avc = 1; + + if (size < 7) { + av_log(avctx, AV_LOG_ERROR, "avcC too short\n"); + return -1; + } + /* sps and pps in the avcC always have length coded with 2 bytes, + * so put a fake nal_length_size = 2 while parsing them */ + h->nal_length_size = 2; + // Decode sps from avcC + cnt = *(p + 5) & 0x1f; // Number of sps + p += 6; + for (i = 0; i < cnt; i++) { + nalsize = AV_RB16(p) + 2; + if(nalsize > size - (p-buf)) + return -1; + if (decode_nal_units(h, p, nalsize, 1) < 0) { + av_log(avctx, AV_LOG_ERROR, + "Decoding sps %d from avcC failed\n", i); + return -1; + } + p += nalsize; + } + // Decode pps from avcC + cnt = *(p++); // Number of pps + for (i = 0; i < cnt; i++) { + nalsize = AV_RB16(p) + 2; + if(nalsize > size - (p-buf)) + return -1; + if (decode_nal_units(h, p, nalsize, 1) < 0) { + av_log(avctx, AV_LOG_ERROR, + "Decoding pps %d from avcC failed\n", i); + return -1; + } + p += nalsize; + } + // Now store right nal length size, that will be used to parse all other nals + h->nal_length_size = (buf[4] & 0x03) + 1; + } else { + h->is_avc = 0; + if (decode_nal_units(h, buf, size, 1) < 0) + return -1; + } + return size; +} + +av_cold int ff_h264_decode_init(AVCodecContext *avctx) +{ + H264Context *h = avctx->priv_data; + int i; + + h->avctx = avctx; + + h->bit_depth_luma = 8; + h->chroma_format_idc = 1; + + h->avctx->bits_per_raw_sample = 8; + h->cur_chroma_format_idc = 1; + + ff_h264dsp_init(&h->h264dsp, 8, 1); + av_assert0(h->sps.bit_depth_chroma == 0); + ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); + ff_h264qpel_init(&h->h264qpel, 8); + ff_h264_pred_init(&h->hpc, h->avctx->codec_id, 8, 1); + + h->dequant_coeff_pps = -1; + + /* needed so that IDCT permutation is known early */ + if (CONFIG_ERROR_RESILIENCE) + ff_dsputil_init(&h->dsp, h->avctx); + ff_videodsp_init(&h->vdsp, 8); + + memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t)); + memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t)); + + h->picture_structure = PICT_FRAME; + h->slice_context_count = 1; + h->workaround_bugs = avctx->workaround_bugs; + h->flags = avctx->flags; + + /* set defaults */ + // s->decode_mb = ff_h263_decode_mb; + if (!avctx->has_b_frames) + h->low_delay = 1; + + avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; + + ff_h264_decode_init_vlc(); + + h->pixel_shift = 0; + h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8; + + h->thread_context[0] = h; + h->outputed_poc = h->next_outputed_poc = INT_MIN; + for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) + h->last_pocs[i] = INT_MIN; + h->prev_poc_msb = 1 << 16; + h->prev_frame_num = -1; + h->x264_build = -1; + ff_h264_reset_sei(h); + if (avctx->codec_id == AV_CODEC_ID_H264) { + if (avctx->ticks_per_frame == 1) { + if(h->avctx->time_base.den < INT_MAX/2) { + h->avctx->time_base.den *= 2; + } else + h->avctx->time_base.num /= 2; + } + avctx->ticks_per_frame = 2; + } + + if (avctx->extradata_size > 0 && avctx->extradata && + ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size) < 0) { + ff_h264_free_context(h); + return -1; + } + + if (h->sps.bitstream_restriction_flag && + h->avctx->has_b_frames < h->sps.num_reorder_frames) { + h->avctx->has_b_frames = h->sps.num_reorder_frames; + h->low_delay = 0; + } + + ff_init_cabac_states(); + avctx->internal->allocate_progress = 1; + + return 0; +} + +#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size)))) +#undef REBASE_PICTURE +#define REBASE_PICTURE(pic, new_ctx, old_ctx) \ + ((pic && pic >= old_ctx->DPB && \ + pic < old_ctx->DPB + MAX_PICTURE_COUNT) ? \ + &new_ctx->DPB[pic - old_ctx->DPB] : NULL) + +static void copy_picture_range(Picture **to, Picture **from, int count, + H264Context *new_base, + H264Context *old_base) +{ + int i; + + for (i = 0; i < count; i++) { + assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) || + IN_RANGE(from[i], old_base->DPB, + sizeof(Picture) * MAX_PICTURE_COUNT) || + !from[i])); + to[i] = REBASE_PICTURE(from[i], new_base, old_base); + } +} + +static void copy_parameter_set(void **to, void **from, int count, int size) +{ + int i; + + for (i = 0; i < count; i++) { + if (to[i] && !from[i]) + av_freep(&to[i]); + else if (from[i] && !to[i]) + to[i] = av_malloc(size); + + if (from[i]) + memcpy(to[i], from[i], size); + } +} + +static int decode_init_thread_copy(AVCodecContext *avctx) +{ + H264Context *h = avctx->priv_data; + + if (!avctx->internal->is_copy) + return 0; + memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); + memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); + + h->context_initialized = 0; + + return 0; +} + +#define copy_fields(to, from, start_field, end_field) \ + memcpy(&to->start_field, &from->start_field, \ + (char *)&to->end_field - (char *)&to->start_field) + +static int h264_slice_header_init(H264Context *, int); + +static int h264_set_parameter_from_sps(H264Context *h); + +static int decode_update_thread_context(AVCodecContext *dst, + const AVCodecContext *src) +{ + H264Context *h = dst->priv_data, *h1 = src->priv_data; + int inited = h->context_initialized, err = 0; + int context_reinitialized = 0; + int i, ret; + + if (dst == src) + return 0; + + if (inited && + (h->width != h1->width || + h->height != h1->height || + h->mb_width != h1->mb_width || + h->mb_height != h1->mb_height || + h->sps.bit_depth_luma != h1->sps.bit_depth_luma || + h->sps.chroma_format_idc != h1->sps.chroma_format_idc || + h->sps.colorspace != h1->sps.colorspace)) { + + /* set bits_per_raw_sample to the previous value. the check for changed + * bit depth in h264_set_parameter_from_sps() uses it and sets it to + * the current value */ + h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma; + + av_freep(&h->bipred_scratchpad); + + h->width = h1->width; + h->height = h1->height; + h->mb_height = h1->mb_height; + h->mb_width = h1->mb_width; + h->mb_num = h1->mb_num; + h->mb_stride = h1->mb_stride; + h->b_stride = h1->b_stride; + // SPS/PPS + copy_parameter_set((void **)h->sps_buffers, (void **)h1->sps_buffers, + MAX_SPS_COUNT, sizeof(SPS)); + h->sps = h1->sps; + copy_parameter_set((void **)h->pps_buffers, (void **)h1->pps_buffers, + MAX_PPS_COUNT, sizeof(PPS)); + h->pps = h1->pps; + + if ((err = h264_slice_header_init(h, 1)) < 0) { + av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed"); + return err; + } + context_reinitialized = 1; + +#if 0 + h264_set_parameter_from_sps(h); + //Note we set context_reinitialized which will cause h264_set_parameter_from_sps to be reexecuted + h->cur_chroma_format_idc = h1->cur_chroma_format_idc; +#endif + } + /* update linesize on resize for h264. The h264 decoder doesn't + * necessarily call ff_MPV_frame_start in the new thread */ + h->linesize = h1->linesize; + h->uvlinesize = h1->uvlinesize; + + /* copy block_offset since frame_start may not be called */ + memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset)); + + if (!inited) { + for (i = 0; i < MAX_SPS_COUNT; i++) + av_freep(h->sps_buffers + i); + + for (i = 0; i < MAX_PPS_COUNT; i++) + av_freep(h->pps_buffers + i); + + memcpy(h, h1, offsetof(H264Context, intra_pcm_ptr)); + memcpy(&h->cabac, &h1->cabac, + sizeof(H264Context) - offsetof(H264Context, cabac)); + av_assert0((void*)&h->cabac == &h->mb_padding + 1); + + memset(h->sps_buffers, 0, sizeof(h->sps_buffers)); + memset(h->pps_buffers, 0, sizeof(h->pps_buffers)); + + memset(&h->er, 0, sizeof(h->er)); + memset(&h->me, 0, sizeof(h->me)); + memset(&h->mb, 0, sizeof(h->mb)); + memset(&h->mb_luma_dc, 0, sizeof(h->mb_luma_dc)); + memset(&h->mb_padding, 0, sizeof(h->mb_padding)); + + h->avctx = dst; + h->DPB = NULL; + h->qscale_table_pool = NULL; + h->mb_type_pool = NULL; + h->ref_index_pool = NULL; + h->motion_val_pool = NULL; + + if (h1->context_initialized) { + h->context_initialized = 0; + + memset(&h->cur_pic, 0, sizeof(h->cur_pic)); + avcodec_get_frame_defaults(&h->cur_pic.f); + h->cur_pic.tf.f = &h->cur_pic.f; + + if (ff_h264_alloc_tables(h) < 0) { + av_log(dst, AV_LOG_ERROR, "Could not allocate memory for h264\n"); + return AVERROR(ENOMEM); + } + context_init(h); + } + + for (i = 0; i < 2; i++) { + h->rbsp_buffer[i] = NULL; + h->rbsp_buffer_size[i] = 0; + } + h->bipred_scratchpad = NULL; + h->edge_emu_buffer = NULL; + + h->thread_context[0] = h; + h->context_initialized = h1->context_initialized; + } + + h->avctx->coded_height = h1->avctx->coded_height; + h->avctx->coded_width = h1->avctx->coded_width; + h->avctx->width = h1->avctx->width; + h->avctx->height = h1->avctx->height; + h->coded_picture_number = h1->coded_picture_number; + h->first_field = h1->first_field; + h->picture_structure = h1->picture_structure; + h->qscale = h1->qscale; + h->droppable = h1->droppable; + h->data_partitioning = h1->data_partitioning; + h->low_delay = h1->low_delay; + + for (i = 0; h->DPB && i < MAX_PICTURE_COUNT; i++) { + unref_picture(h, &h->DPB[i]); + if (h1->DPB[i].f.data[0] && + (ret = ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0) + return ret; + } + + h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1); + unref_picture(h, &h->cur_pic); + if (h1->cur_pic.f.buf[0] && (ret = ref_picture(h, &h->cur_pic, &h1->cur_pic)) < 0) + return ret; + + h->workaround_bugs = h1->workaround_bugs; + h->low_delay = h1->low_delay; + h->droppable = h1->droppable; + + // extradata/NAL handling + h->is_avc = h1->is_avc; + + // SPS/PPS + copy_parameter_set((void **)h->sps_buffers, (void **)h1->sps_buffers, + MAX_SPS_COUNT, sizeof(SPS)); + h->sps = h1->sps; + copy_parameter_set((void **)h->pps_buffers, (void **)h1->pps_buffers, + MAX_PPS_COUNT, sizeof(PPS)); + h->pps = h1->pps; + + // Dequantization matrices + // FIXME these are big - can they be only copied when PPS changes? + copy_fields(h, h1, dequant4_buffer, dequant4_coeff); + + for (i = 0; i < 6; i++) + h->dequant4_coeff[i] = h->dequant4_buffer[0] + + (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]); + + for (i = 0; i < 6; i++) + h->dequant8_coeff[i] = h->dequant8_buffer[0] + + (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]); + + h->dequant_coeff_pps = h1->dequant_coeff_pps; + + // POC timing + copy_fields(h, h1, poc_lsb, redundant_pic_count); + + // reference lists + copy_fields(h, h1, short_ref, cabac_init_idc); + + copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1); + copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1); + copy_picture_range(h->delayed_pic, h1->delayed_pic, + MAX_DELAYED_PIC_COUNT + 2, h, h1); + + h->sync = h1->sync; + + if (context_reinitialized) + h264_set_parameter_from_sps(h); + + if (!h->cur_pic_ptr) + return 0; + + if (!h->droppable) { + err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); + h->prev_poc_msb = h->poc_msb; + h->prev_poc_lsb = h->poc_lsb; + } + h->prev_frame_num_offset = h->frame_num_offset; + h->prev_frame_num = h->frame_num; + h->outputed_poc = h->next_outputed_poc; + + return err; +} + +static int h264_frame_start(H264Context *h) +{ + Picture *pic; + int i, ret; + const int pixel_shift = h->pixel_shift; + int c[4] = { + 1<<(h->sps.bit_depth_luma-1), + 1<<(h->sps.bit_depth_chroma-1), + 1<<(h->sps.bit_depth_chroma-1), + -1 + }; + + if (!ff_thread_can_start_frame(h->avctx)) { + av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n"); + return -1; + } + + release_unused_pictures(h, 1); + h->cur_pic_ptr = NULL; + + i = find_unused_picture(h); + if (i < 0) { + av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n"); + return i; + } + pic = &h->DPB[i]; + + pic->reference = h->droppable ? 0 : h->picture_structure; + pic->f.coded_picture_number = h->coded_picture_number++; + pic->field_picture = h->picture_structure != PICT_FRAME; + + /* + * Zero key_frame here; IDR markings per slice in frame or fields are ORed + * in later. + * See decode_nal_units(). + */ + pic->f.key_frame = 0; + pic->sync = 0; + pic->mmco_reset = 0; + + if ((ret = alloc_picture(h, pic)) < 0) + return ret; + if(!h->sync && !h->avctx->hwaccel && + !(h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)) + avpriv_color_frame(&pic->f, c); + + h->cur_pic_ptr = pic; + unref_picture(h, &h->cur_pic); + if ((ret = ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0) + return ret; + + if (CONFIG_ERROR_RESILIENCE) { + ff_er_frame_start(&h->er); + h->er.last_pic = + h->er.next_pic = NULL; + } + + assert(h->linesize && h->uvlinesize); + + for (i = 0; i < 16; i++) { + h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3); + h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3); + } + for (i = 0; i < 16; i++) { + h->block_offset[16 + i] = + h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); + h->block_offset[48 + 16 + i] = + h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3); + } + + // s->decode = (h->flags & CODEC_FLAG_PSNR) || !s->encoding || + // h->cur_pic.reference /* || h->contains_intra */ || 1; + + /* We mark the current picture as non-reference after allocating it, so + * that if we break out due to an error it can be released automatically + * in the next ff_MPV_frame_start(). + */ + h->cur_pic_ptr->reference = 0; + + h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX; + + h->next_output_pic = NULL; + + assert(h->cur_pic_ptr->long_ref == 0); + + return 0; +} + +/** + * Run setup operations that must be run after slice header decoding. + * This includes finding the next displayed frame. + * + * @param h h264 master context + * @param setup_finished enough NALs have been read that we can call + * ff_thread_finish_setup() + */ +static void decode_postinit(H264Context *h, int setup_finished) +{ + Picture *out = h->cur_pic_ptr; + Picture *cur = h->cur_pic_ptr; + int i, pics, out_of_order, out_idx; + + h->cur_pic_ptr->f.pict_type = h->pict_type; + + if (h->next_output_pic) + return; + + if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) { + /* FIXME: if we have two PAFF fields in one packet, we can't start + * the next thread here. If we have one field per packet, we can. + * The check in decode_nal_units() is not good enough to find this + * yet, so we assume the worst for now. */ + // if (setup_finished) + // ff_thread_finish_setup(h->avctx); + return; + } + + cur->f.interlaced_frame = 0; + cur->f.repeat_pict = 0; + + /* Signal interlacing information externally. */ + /* Prioritize picture timing SEI information over used + * decoding process if it exists. */ + + if (h->sps.pic_struct_present_flag) { + switch (h->sei_pic_struct) { + case SEI_PIC_STRUCT_FRAME: + break; + case SEI_PIC_STRUCT_TOP_FIELD: + case SEI_PIC_STRUCT_BOTTOM_FIELD: + cur->f.interlaced_frame = 1; + break; + case SEI_PIC_STRUCT_TOP_BOTTOM: + case SEI_PIC_STRUCT_BOTTOM_TOP: + if (FIELD_OR_MBAFF_PICTURE(h)) + cur->f.interlaced_frame = 1; + else + // try to flag soft telecine progressive + cur->f.interlaced_frame = h->prev_interlaced_frame; + break; + case SEI_PIC_STRUCT_TOP_BOTTOM_TOP: + case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM: + /* Signal the possibility of telecined film externally + * (pic_struct 5,6). From these hints, let the applications + * decide if they apply deinterlacing. */ + cur->f.repeat_pict = 1; + break; + case SEI_PIC_STRUCT_FRAME_DOUBLING: + cur->f.repeat_pict = 2; + break; + case SEI_PIC_STRUCT_FRAME_TRIPLING: + cur->f.repeat_pict = 4; + break; + } + + if ((h->sei_ct_type & 3) && + h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP) + cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0; + } else { + /* Derive interlacing flag from used decoding process. */ + cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE(h); + } + h->prev_interlaced_frame = cur->f.interlaced_frame; + + if (cur->field_poc[0] != cur->field_poc[1]) { + /* Derive top_field_first from field pocs. */ + cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1]; + } else { + if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) { + /* Use picture timing SEI information. Even if it is a + * information of a past frame, better than nothing. */ + if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM || + h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP) + cur->f.top_field_first = 1; + else + cur->f.top_field_first = 0; + } else { + /* Most likely progressive */ + cur->f.top_field_first = 0; + } + } + + cur->mmco_reset = h->mmco_reset; + h->mmco_reset = 0; + // FIXME do something with unavailable reference frames + + /* Sort B-frames into display order */ + + if (h->sps.bitstream_restriction_flag && + h->avctx->has_b_frames < h->sps.num_reorder_frames) { + h->avctx->has_b_frames = h->sps.num_reorder_frames; + h->low_delay = 0; + } + + if (h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT && + !h->sps.bitstream_restriction_flag) { + h->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1; + h->low_delay = 0; + } + + for (i = 0; 1; i++) { + if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){ + if(i) + h->last_pocs[i-1] = cur->poc; + break; + } else if(i) { + h->last_pocs[i-1]= h->last_pocs[i]; + } + } + out_of_order = MAX_DELAYED_PIC_COUNT - i; + if( cur->f.pict_type == AV_PICTURE_TYPE_B + || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2)) + out_of_order = FFMAX(out_of_order, 1); + if (out_of_order == MAX_DELAYED_PIC_COUNT) { + av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]); + for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++) + h->last_pocs[i] = INT_MIN; + h->last_pocs[0] = cur->poc; + cur->mmco_reset = 1; + } else if(h->avctx->has_b_frames < out_of_order && !h->sps.bitstream_restriction_flag){ + av_log(h->avctx, AV_LOG_VERBOSE, "Increasing reorder buffer to %d\n", out_of_order); + h->avctx->has_b_frames = out_of_order; + h->low_delay = 0; + } + + pics = 0; + while (h->delayed_pic[pics]) + pics++; + + av_assert0(pics <= MAX_DELAYED_PIC_COUNT); + + h->delayed_pic[pics++] = cur; + if (cur->reference == 0) + cur->reference = DELAYED_PIC_REF; + + out = h->delayed_pic[0]; + out_idx = 0; + for (i = 1; h->delayed_pic[i] && + !h->delayed_pic[i]->f.key_frame && + !h->delayed_pic[i]->mmco_reset; + i++) + if (h->delayed_pic[i]->poc < out->poc) { + out = h->delayed_pic[i]; + out_idx = i; + } + if (h->avctx->has_b_frames == 0 && + (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) + h->next_outputed_poc = INT_MIN; + out_of_order = out->poc < h->next_outputed_poc; + + if (out_of_order || pics > h->avctx->has_b_frames) { + out->reference &= ~DELAYED_PIC_REF; + // for frame threading, the owner must be the second field's thread or + // else the first thread can release the picture and reuse it unsafely + for (i = out_idx; h->delayed_pic[i]; i++) + h->delayed_pic[i] = h->delayed_pic[i + 1]; + } + if (!out_of_order && pics > h->avctx->has_b_frames) { + h->next_output_pic = out; + if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) { + h->next_outputed_poc = INT_MIN; + } else + h->next_outputed_poc = out->poc; + } else { + av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : ""); + } + + if (h->next_output_pic && h->next_output_pic->sync) { + h->sync |= 2; + } + + if (setup_finished && !h->avctx->hwaccel) + ff_thread_finish_setup(h->avctx); +} + +static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y, + uint8_t *src_cb, uint8_t *src_cr, + int linesize, int uvlinesize, + int simple) +{ + uint8_t *top_border; + int top_idx = 1; + const int pixel_shift = h->pixel_shift; + int chroma444 = CHROMA444(h); + int chroma422 = CHROMA422(h); + + src_y -= linesize; + src_cb -= uvlinesize; + src_cr -= uvlinesize; + + if (!simple && FRAME_MBAFF(h)) { + if (h->mb_y & 1) { + if (!MB_MBAFF(h)) { + top_border = h->top_borders[0][h->mb_x]; + AV_COPY128(top_border, src_y + 15 * linesize); + if (pixel_shift) + AV_COPY128(top_border + 16, src_y + 15 * linesize + 16); + if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) { + if (chroma444) { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize); + AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16); + AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize); + AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16); + } else { + AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize); + AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize); + } + } else if (chroma422) { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize); + AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize); + } else { + AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize); + AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize); + } + } else { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize); + AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize); + } else { + AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize); + AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize); + } + } + } + } + } else if (MB_MBAFF(h)) { + top_idx = 0; + } else + return; + } + + top_border = h->top_borders[top_idx][h->mb_x]; + /* There are two lines saved, the line above the top macroblock + * of a pair, and the line above the bottom macroblock. */ + AV_COPY128(top_border, src_y + 16 * linesize); + if (pixel_shift) + AV_COPY128(top_border + 16, src_y + 16 * linesize + 16); + + if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) { + if (chroma444) { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 16 * linesize); + AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16); + AV_COPY128(top_border + 64, src_cr + 16 * linesize); + AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16); + } else { + AV_COPY128(top_border + 16, src_cb + 16 * linesize); + AV_COPY128(top_border + 32, src_cr + 16 * linesize); + } + } else if (chroma422) { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize); + AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize); + } else { + AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize); + AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize); + } + } else { + if (pixel_shift) { + AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize); + AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize); + } else { + AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize); + AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize); + } + } + } +} + +static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y, + uint8_t *src_cb, uint8_t *src_cr, + int linesize, int uvlinesize, + int xchg, int chroma444, + int simple, int pixel_shift) +{ + int deblock_topleft; + int deblock_top; + int top_idx = 1; + uint8_t *top_border_m1; + uint8_t *top_border; + + if (!simple && FRAME_MBAFF(h)) { + if (h->mb_y & 1) { + if (!MB_MBAFF(h)) + return; + } else { + top_idx = MB_MBAFF(h) ? 0 : 1; + } + } + + if (h->deblocking_filter == 2) { + deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num; + deblock_top = h->top_type; + } else { + deblock_topleft = (h->mb_x > 0); + deblock_top = (h->mb_y > !!MB_FIELD(h)); + } + + src_y -= linesize + 1 + pixel_shift; + src_cb -= uvlinesize + 1 + pixel_shift; + src_cr -= uvlinesize + 1 + pixel_shift; + + top_border_m1 = h->top_borders[top_idx][h->mb_x - 1]; + top_border = h->top_borders[top_idx][h->mb_x]; + +#define XCHG(a, b, xchg) \ + if (pixel_shift) { \ + if (xchg) { \ + AV_SWAP64(b + 0, a + 0); \ + AV_SWAP64(b + 8, a + 8); \ + } else { \ + AV_COPY128(b, a); \ + } \ + } else if (xchg) \ + AV_SWAP64(b, a); \ + else \ + AV_COPY64(b, a); + + if (deblock_top) { + if (deblock_topleft) { + XCHG(top_border_m1 + (8 << pixel_shift), + src_y - (7 << pixel_shift), 1); + } + XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg); + XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1); + if (h->mb_x + 1 < h->mb_width) { + XCHG(h->top_borders[top_idx][h->mb_x + 1], + src_y + (17 << pixel_shift), 1); + } + } + if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) { + if (chroma444) { + if (deblock_topleft) { + XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1); + XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1); + } + XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg); + XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1); + XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg); + XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1); + if (h->mb_x + 1 < h->mb_width) { + XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1); + XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1); + } + } else { + if (deblock_top) { + if (deblock_topleft) { + XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1); + XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1); + } + XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1); + XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1); + } + } + } +} + +static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth, + int index) +{ + if (high_bit_depth) { + return AV_RN32A(((int32_t *)mb) + index); + } else + return AV_RN16A(mb + index); +} + +static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth, + int index, int value) +{ + if (high_bit_depth) { + AV_WN32A(((int32_t *)mb) + index, value); + } else + AV_WN16A(mb + index, value); +} + +static av_always_inline void hl_decode_mb_predict_luma(H264Context *h, + int mb_type, int is_h264, + int simple, + int transform_bypass, + int pixel_shift, + int *block_offset, + int linesize, + uint8_t *dest_y, int p) +{ + void (*idct_add)(uint8_t *dst, int16_t *block, int stride); + void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride); + int i; + int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1]; + block_offset += 16 * p; + if (IS_INTRA4x4(mb_type)) { + if (IS_8x8DCT(mb_type)) { + if (transform_bypass) { + idct_dc_add = + idct_add = h->h264dsp.h264_add_pixels8_clear; + } else { + idct_dc_add = h->h264dsp.h264_idct8_dc_add; + idct_add = h->h264dsp.h264_idct8_add; + } + for (i = 0; i < 16; i += 4) { + uint8_t *const ptr = dest_y + block_offset[i]; + const int dir = h->intra4x4_pred_mode_cache[scan8[i]]; + if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) { + h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + } else { + const int nnz = h->non_zero_count_cache[scan8[i + p * 16]]; + h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000, + (h->topright_samples_available << i) & 0x4000, linesize); + if (nnz) { + if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256)) + idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + else + idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + } + } + } + } else { + if (transform_bypass) { + idct_dc_add = + idct_add = h->h264dsp.h264_add_pixels4_clear; + } else { + idct_dc_add = h->h264dsp.h264_idct_dc_add; + idct_add = h->h264dsp.h264_idct_add; + } + for (i = 0; i < 16; i++) { + uint8_t *const ptr = dest_y + block_offset[i]; + const int dir = h->intra4x4_pred_mode_cache[scan8[i]]; + + if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) { + h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + } else { + uint8_t *topright; + int nnz, tr; + uint64_t tr_high; + if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) { + const int topright_avail = (h->topright_samples_available << i) & 0x8000; + av_assert2(h->mb_y || linesize <= block_offset[i]); + if (!topright_avail) { + if (pixel_shift) { + tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL; + topright = (uint8_t *)&tr_high; + } else { + tr = ptr[3 - linesize] * 0x01010101u; + topright = (uint8_t *)&tr; + } + } else + topright = ptr + (4 << pixel_shift) - linesize; + } else + topright = NULL; + + h->hpc.pred4x4[dir](ptr, topright, linesize); + nnz = h->non_zero_count_cache[scan8[i + p * 16]]; + if (nnz) { + if (is_h264) { + if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256)) + idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + else + idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize); + } else if (CONFIG_SVQ3_DECODER) + ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0); + } + } + } + } + } else { + h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize); + if (is_h264) { + if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) { + if (!transform_bypass) + h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift), + h->mb_luma_dc[p], + h->dequant4_coeff[p][qscale][0]); + else { + static const uint8_t dc_mapping[16] = { + 0 * 16, 1 * 16, 4 * 16, 5 * 16, + 2 * 16, 3 * 16, 6 * 16, 7 * 16, + 8 * 16, 9 * 16, 12 * 16, 13 * 16, + 10 * 16, 11 * 16, 14 * 16, 15 * 16 }; + for (i = 0; i < 16; i++) + dctcoef_set(h->mb + (p * 256 << pixel_shift), + pixel_shift, dc_mapping[i], + dctcoef_get(h->mb_luma_dc[p], + pixel_shift, i)); + } + } + } else if (CONFIG_SVQ3_DECODER) + ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256, + h->mb_luma_dc[p], qscale); + } +} + +static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type, + int is_h264, int simple, + int transform_bypass, + int pixel_shift, + int *block_offset, + int linesize, + uint8_t *dest_y, int p) +{ + void (*idct_add)(uint8_t *dst, int16_t *block, int stride); + int i; + block_offset += 16 * p; + if (!IS_INTRA4x4(mb_type)) { + if (is_h264) { + if (IS_INTRA16x16(mb_type)) { + if (transform_bypass) { + if (h->sps.profile_idc == 244 && + (h->intra16x16_pred_mode == VERT_PRED8x8 || + h->intra16x16_pred_mode == HOR_PRED8x8)) { + h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset, + h->mb + (p * 256 << pixel_shift), + linesize); + } else { + for (i = 0; i < 16; i++) + if (h->non_zero_count_cache[scan8[i + p * 16]] || + dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256)) + h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i], + h->mb + (i * 16 + p * 256 << pixel_shift), + linesize); + } + } else { + h->h264dsp.h264_idct_add16intra(dest_y, block_offset, + h->mb + (p * 256 << pixel_shift), + linesize, + h->non_zero_count_cache + p * 5 * 8); + } + } else if (h->cbp & 15) { + if (transform_bypass) { + const int di = IS_8x8DCT(mb_type) ? 4 : 1; + idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear + : h->h264dsp.h264_add_pixels4_clear; + for (i = 0; i < 16; i += di) + if (h->non_zero_count_cache[scan8[i + p * 16]]) + idct_add(dest_y + block_offset[i], + h->mb + (i * 16 + p * 256 << pixel_shift), + linesize); + } else { + if (IS_8x8DCT(mb_type)) + h->h264dsp.h264_idct8_add4(dest_y, block_offset, + h->mb + (p * 256 << pixel_shift), + linesize, + h->non_zero_count_cache + p * 5 * 8); + else + h->h264dsp.h264_idct_add16(dest_y, block_offset, + h->mb + (p * 256 << pixel_shift), + linesize, + h->non_zero_count_cache + p * 5 * 8); + } + } + } else if (CONFIG_SVQ3_DECODER) { + for (i = 0; i < 16; i++) + if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) { + // FIXME benchmark weird rule, & below + uint8_t *const ptr = dest_y + block_offset[i]; + ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, + h->qscale, IS_INTRA(mb_type) ? 1 : 0); + } + } + } +} + +#define BITS 8 +#define SIMPLE 1 +#include "h264_mb_template.c" + +#undef BITS +#define BITS 16 +#include "h264_mb_template.c" + +#undef SIMPLE +#define SIMPLE 0 +#include "h264_mb_template.c" + +void ff_h264_hl_decode_mb(H264Context *h) +{ + const int mb_xy = h->mb_xy; + const int mb_type = h->cur_pic.mb_type[mb_xy]; + int is_complex = CONFIG_SMALL || h->is_complex || IS_INTRA_PCM(mb_type) || h->qscale == 0; + + if (CHROMA444(h)) { + if (is_complex || h->pixel_shift) + hl_decode_mb_444_complex(h); + else + hl_decode_mb_444_simple_8(h); + } else if (is_complex) { + hl_decode_mb_complex(h); + } else if (h->pixel_shift) { + hl_decode_mb_simple_16(h); + } else + hl_decode_mb_simple_8(h); +} + +static int pred_weight_table(H264Context *h) +{ + int list, i; + int luma_def, chroma_def; + + h->use_weight = 0; + h->use_weight_chroma = 0; + h->luma_log2_weight_denom = get_ue_golomb(&h->gb); + if (h->sps.chroma_format_idc) + h->chroma_log2_weight_denom = get_ue_golomb(&h->gb); + luma_def = 1 << h->luma_log2_weight_denom; + chroma_def = 1 << h->chroma_log2_weight_denom; + + for (list = 0; list < 2; list++) { + h->luma_weight_flag[list] = 0; + h->chroma_weight_flag[list] = 0; + for (i = 0; i < h->ref_count[list]; i++) { + int luma_weight_flag, chroma_weight_flag; + + luma_weight_flag = get_bits1(&h->gb); + if (luma_weight_flag) { + h->luma_weight[i][list][0] = get_se_golomb(&h->gb); + h->luma_weight[i][list][1] = get_se_golomb(&h->gb); + if (h->luma_weight[i][list][0] != luma_def || + h->luma_weight[i][list][1] != 0) { + h->use_weight = 1; + h->luma_weight_flag[list] = 1; + } + } else { + h->luma_weight[i][list][0] = luma_def; + h->luma_weight[i][list][1] = 0; + } + + if (h->sps.chroma_format_idc) { + chroma_weight_flag = get_bits1(&h->gb); + if (chroma_weight_flag) { + int j; + for (j = 0; j < 2; j++) { + h->chroma_weight[i][list][j][0] = get_se_golomb(&h->gb); + h->chroma_weight[i][list][j][1] = get_se_golomb(&h->gb); + if (h->chroma_weight[i][list][j][0] != chroma_def || + h->chroma_weight[i][list][j][1] != 0) { + h->use_weight_chroma = 1; + h->chroma_weight_flag[list] = 1; + } + } + } else { + int j; + for (j = 0; j < 2; j++) { + h->chroma_weight[i][list][j][0] = chroma_def; + h->chroma_weight[i][list][j][1] = 0; + } + } + } + } + if (h->slice_type_nos != AV_PICTURE_TYPE_B) + break; + } + h->use_weight = h->use_weight || h->use_weight_chroma; + return 0; +} + +/** + * Initialize implicit_weight table. + * @param field 0/1 initialize the weight for interlaced MBAFF + * -1 initializes the rest + */ +static void implicit_weight_table(H264Context *h, int field) +{ + int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1; + + for (i = 0; i < 2; i++) { + h->luma_weight_flag[i] = 0; + h->chroma_weight_flag[i] = 0; + } + + if (field < 0) { + if (h->picture_structure == PICT_FRAME) { + cur_poc = h->cur_pic_ptr->poc; + } else { + cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1]; + } + if (h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF(h) && + h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2 * cur_poc) { + h->use_weight = 0; + h->use_weight_chroma = 0; + return; + } + ref_start = 0; + ref_count0 = h->ref_count[0]; + ref_count1 = h->ref_count[1]; + } else { + cur_poc = h->cur_pic_ptr->field_poc[field]; + ref_start = 16; + ref_count0 = 16 + 2 * h->ref_count[0]; + ref_count1 = 16 + 2 * h->ref_count[1]; + } + + h->use_weight = 2; + h->use_weight_chroma = 2; + h->luma_log2_weight_denom = 5; + h->chroma_log2_weight_denom = 5; + + for (ref0 = ref_start; ref0 < ref_count0; ref0++) { + int poc0 = h->ref_list[0][ref0].poc; + for (ref1 = ref_start; ref1 < ref_count1; ref1++) { + int w = 32; + if (!h->ref_list[0][ref0].long_ref && !h->ref_list[1][ref1].long_ref) { + int poc1 = h->ref_list[1][ref1].poc; + int td = av_clip(poc1 - poc0, -128, 127); + if (td) { + int tb = av_clip(cur_poc - poc0, -128, 127); + int tx = (16384 + (FFABS(td) >> 1)) / td; + int dist_scale_factor = (tb * tx + 32) >> 8; + if (dist_scale_factor >= -64 && dist_scale_factor <= 128) + w = 64 - dist_scale_factor; + } + } + if (field < 0) { + h->implicit_weight[ref0][ref1][0] = + h->implicit_weight[ref0][ref1][1] = w; + } else { + h->implicit_weight[ref0][ref1][field] = w; + } + } + } +} + +/** + * instantaneous decoder refresh. + */ +static void idr(H264Context *h) +{ + int i; + ff_h264_remove_all_refs(h); + h->prev_frame_num = 0; + h->prev_frame_num_offset = 0; + h->prev_poc_msb = 1<<16; + h->prev_poc_lsb = 0; + for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++) + h->last_pocs[i] = INT_MIN; +} + +/* forget old pics after a seek */ +static void flush_change(H264Context *h) +{ + int i, j; + + h->outputed_poc = h->next_outputed_poc = INT_MIN; + h->prev_interlaced_frame = 1; + idr(h); + + h->prev_frame_num = -1; + if (h->cur_pic_ptr) { + h->cur_pic_ptr->reference = 0; + for (j=i=0; h->delayed_pic[i]; i++) + if (h->delayed_pic[i] != h->cur_pic_ptr) + h->delayed_pic[j++] = h->delayed_pic[i]; + h->delayed_pic[j] = NULL; + } + h->first_field = 0; + memset(h->ref_list[0], 0, sizeof(h->ref_list[0])); + memset(h->ref_list[1], 0, sizeof(h->ref_list[1])); + memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0])); + memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1])); + ff_h264_reset_sei(h); + h->recovery_frame= -1; + h->sync= 0; + h->list_count = 0; + h->current_slice = 0; +} + +/* forget old pics after a seek */ +static void flush_dpb(AVCodecContext *avctx) +{ + H264Context *h = avctx->priv_data; + int i; + + for (i = 0; i <= MAX_DELAYED_PIC_COUNT; i++) { + if (h->delayed_pic[i]) + h->delayed_pic[i]->reference = 0; + h->delayed_pic[i] = NULL; + } + + flush_change(h); + + if (h->DPB) + for (i = 0; i < MAX_PICTURE_COUNT; i++) + unref_picture(h, &h->DPB[i]); + h->cur_pic_ptr = NULL; + unref_picture(h, &h->cur_pic); + + h->mb_x = h->mb_y = 0; + + h->parse_context.state = -1; + h->parse_context.frame_start_found = 0; + h->parse_context.overread = 0; + h->parse_context.overread_index = 0; + h->parse_context.index = 0; + h->parse_context.last_index = 0; +} + +static int init_poc(H264Context *h) +{ + const int max_frame_num = 1 << h->sps.log2_max_frame_num; + int field_poc[2]; + Picture *cur = h->cur_pic_ptr; + + h->frame_num_offset = h->prev_frame_num_offset; + if (h->frame_num < h->prev_frame_num) + h->frame_num_offset += max_frame_num; + + if (h->sps.poc_type == 0) { + const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb; + + if (h->poc_lsb < h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2) + h->poc_msb = h->prev_poc_msb + max_poc_lsb; + else if (h->poc_lsb > h->prev_poc_lsb && h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2) + h->poc_msb = h->prev_poc_msb - max_poc_lsb; + else + h->poc_msb = h->prev_poc_msb; + field_poc[0] = + field_poc[1] = h->poc_msb + h->poc_lsb; + if (h->picture_structure == PICT_FRAME) + field_poc[1] += h->delta_poc_bottom; + } else if (h->sps.poc_type == 1) { + int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc; + int i; + + if (h->sps.poc_cycle_length != 0) + abs_frame_num = h->frame_num_offset + h->frame_num; + else + abs_frame_num = 0; + + if (h->nal_ref_idc == 0 && abs_frame_num > 0) + abs_frame_num--; + + expected_delta_per_poc_cycle = 0; + for (i = 0; i < h->sps.poc_cycle_length; i++) + // FIXME integrate during sps parse + expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i]; + + if (abs_frame_num > 0) { + int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length; + int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length; + + expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle; + for (i = 0; i <= frame_num_in_poc_cycle; i++) + expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i]; + } else + expectedpoc = 0; + + if (h->nal_ref_idc == 0) + expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic; + + field_poc[0] = expectedpoc + h->delta_poc[0]; + field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field; + + if (h->picture_structure == PICT_FRAME) + field_poc[1] += h->delta_poc[1]; + } else { + int poc = 2 * (h->frame_num_offset + h->frame_num); + + if (!h->nal_ref_idc) + poc--; + + field_poc[0] = poc; + field_poc[1] = poc; + } + + if (h->picture_structure != PICT_BOTTOM_FIELD) + h->cur_pic_ptr->field_poc[0] = field_poc[0]; + if (h->picture_structure != PICT_TOP_FIELD) + h->cur_pic_ptr->field_poc[1] = field_poc[1]; + cur->poc = FFMIN(cur->field_poc[0], cur->field_poc[1]); + + return 0; +} + +/** + * initialize scan tables + */ +static void init_scan_tables(H264Context *h) +{ + int i; + for (i = 0; i < 16; i++) { +#define T(x) (x >> 2) | ((x << 2) & 0xF) + h->zigzag_scan[i] = T(zigzag_scan[i]); + h->field_scan[i] = T(field_scan[i]); +#undef T + } + for (i = 0; i < 64; i++) { +#define T(x) (x >> 3) | ((x & 7) << 3) + h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]); + h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]); + h->field_scan8x8[i] = T(field_scan8x8[i]); + h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]); +#undef T + } + if (h->sps.transform_bypass) { // FIXME same ugly + memcpy(h->zigzag_scan_q0 , zigzag_scan , sizeof(h->zigzag_scan_q0 )); + memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 )); + memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0)); + memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 )); + memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 )); + memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 )); + } else { + memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 )); + memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 )); + memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0)); + memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 )); + memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 )); + memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 )); + } +} + +static int field_end(H264Context *h, int in_setup) +{ + AVCodecContext *const avctx = h->avctx; + int err = 0; + h->mb_y = 0; + + if (CONFIG_H264_VDPAU_DECODER && + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) + ff_vdpau_h264_set_reference_frames(h); + + if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) { + if (!h->droppable) { + err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); + h->prev_poc_msb = h->poc_msb; + h->prev_poc_lsb = h->poc_lsb; + } + h->prev_frame_num_offset = h->frame_num_offset; + h->prev_frame_num = h->frame_num; + h->outputed_poc = h->next_outputed_poc; + } + + if (avctx->hwaccel) { + if (avctx->hwaccel->end_frame(avctx) < 0) + av_log(avctx, AV_LOG_ERROR, + "hardware accelerator failed to decode picture\n"); + } + + if (CONFIG_H264_VDPAU_DECODER && + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) + ff_vdpau_h264_picture_complete(h); + + /* + * FIXME: Error handling code does not seem to support interlaced + * when slices span multiple rows + * The ff_er_add_slice calls don't work right for bottom + * fields; they cause massive erroneous error concealing + * Error marking covers both fields (top and bottom). + * This causes a mismatched s->error_count + * and a bad error table. Further, the error count goes to + * INT_MAX when called for bottom field, because mb_y is + * past end by one (callers fault) and resync_mb_y != 0 + * causes problems for the first MB line, too. + */ + if (CONFIG_ERROR_RESILIENCE && + !FIELD_PICTURE(h) && h->current_slice && !h->sps.new) { + h->er.cur_pic = h->cur_pic_ptr; + ff_er_frame_end(&h->er); + } + if (!in_setup && !h->droppable) + ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, + h->picture_structure == PICT_BOTTOM_FIELD); + emms_c(); + + h->current_slice = 0; + + return err; +} + +/** + * Replicate H264 "master" context to thread contexts. + */ +static int clone_slice(H264Context *dst, H264Context *src) +{ + memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset)); + dst->cur_pic_ptr = src->cur_pic_ptr; + dst->cur_pic = src->cur_pic; + dst->linesize = src->linesize; + dst->uvlinesize = src->uvlinesize; + dst->first_field = src->first_field; + + dst->prev_poc_msb = src->prev_poc_msb; + dst->prev_poc_lsb = src->prev_poc_lsb; + dst->prev_frame_num_offset = src->prev_frame_num_offset; + dst->prev_frame_num = src->prev_frame_num; + dst->short_ref_count = src->short_ref_count; + + memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref)); + memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref)); + memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list)); + + memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff)); + memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff)); + + return 0; +} + +/** + * Compute profile from profile_idc and constraint_set?_flags. + * + * @param sps SPS + * + * @return profile as defined by FF_PROFILE_H264_* + */ +int ff_h264_get_profile(SPS *sps) +{ + int profile = sps->profile_idc; + + switch (sps->profile_idc) { + case FF_PROFILE_H264_BASELINE: + // constraint_set1_flag set to 1 + profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0; + break; + case FF_PROFILE_H264_HIGH_10: + case FF_PROFILE_H264_HIGH_422: + case FF_PROFILE_H264_HIGH_444_PREDICTIVE: + // constraint_set3_flag set to 1 + profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0; + break; + } + + return profile; +} + +static int h264_set_parameter_from_sps(H264Context *h) +{ + if (h->flags & CODEC_FLAG_LOW_DELAY || + (h->sps.bitstream_restriction_flag && + !h->sps.num_reorder_frames)) { + if (h->avctx->has_b_frames > 1 || h->delayed_pic[0]) + av_log(h->avctx, AV_LOG_WARNING, "Delayed frames seen. " + "Reenabling low delay requires a codec flush.\n"); + else + h->low_delay = 1; + } + + if (h->avctx->has_b_frames < 2) + h->avctx->has_b_frames = !h->low_delay; + + if (h->sps.bit_depth_luma != h->sps.bit_depth_chroma) { + avpriv_request_sample(h->avctx, + "Different chroma and luma bit depth"); + return AVERROR_PATCHWELCOME; + } + + if (h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma || + h->cur_chroma_format_idc != h->sps.chroma_format_idc) { + if (h->avctx->codec && + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU && + (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) { + av_log(h->avctx, AV_LOG_ERROR, + "VDPAU decoding does not support video colorspace.\n"); + return AVERROR_INVALIDDATA; + } + if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 14 && + h->sps.bit_depth_luma != 11 && h->sps.bit_depth_luma != 13) { + h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma; + h->cur_chroma_format_idc = h->sps.chroma_format_idc; + h->pixel_shift = h->sps.bit_depth_luma > 8; + + ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma, + h->sps.chroma_format_idc); + ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma); + ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma); + ff_h264_pred_init(&h->hpc, h->avctx->codec_id, h->sps.bit_depth_luma, + h->sps.chroma_format_idc); + + if (CONFIG_ERROR_RESILIENCE) + ff_dsputil_init(&h->dsp, h->avctx); + ff_videodsp_init(&h->vdsp, h->sps.bit_depth_luma); + } else { + av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n", + h->sps.bit_depth_luma); + return AVERROR_INVALIDDATA; + } + } + return 0; +} + +static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback) +{ + switch (h->sps.bit_depth_luma) { + case 9: + if (CHROMA444(h)) { + if (h->avctx->colorspace == AVCOL_SPC_RGB) { + return AV_PIX_FMT_GBRP9; + } else + return AV_PIX_FMT_YUV444P9; + } else if (CHROMA422(h)) + return AV_PIX_FMT_YUV422P9; + else + return AV_PIX_FMT_YUV420P9; + break; + case 10: + if (CHROMA444(h)) { + if (h->avctx->colorspace == AVCOL_SPC_RGB) { + return AV_PIX_FMT_GBRP10; + } else + return AV_PIX_FMT_YUV444P10; + } else if (CHROMA422(h)) + return AV_PIX_FMT_YUV422P10; + else + return AV_PIX_FMT_YUV420P10; + break; + case 12: + if (CHROMA444(h)) { + if (h->avctx->colorspace == AVCOL_SPC_RGB) { + return AV_PIX_FMT_GBRP12; + } else + return AV_PIX_FMT_YUV444P12; + } else if (CHROMA422(h)) + return AV_PIX_FMT_YUV422P12; + else + return AV_PIX_FMT_YUV420P12; + break; + case 14: + if (CHROMA444(h)) { + if (h->avctx->colorspace == AVCOL_SPC_RGB) { + return AV_PIX_FMT_GBRP14; + } else + return AV_PIX_FMT_YUV444P14; + } else if (CHROMA422(h)) + return AV_PIX_FMT_YUV422P14; + else + return AV_PIX_FMT_YUV420P14; + break; + case 8: + if (CHROMA444(h)) { + if (h->avctx->colorspace == AVCOL_SPC_RGB) { + av_log(h->avctx, AV_LOG_DEBUG, "Detected GBR colorspace.\n"); + return AV_PIX_FMT_GBR24P; + } else if (h->avctx->colorspace == AVCOL_SPC_YCGCO) { + av_log(h->avctx, AV_LOG_WARNING, "Detected unsupported YCgCo colorspace.\n"); + } + return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ444P + : AV_PIX_FMT_YUV444P; + } else if (CHROMA422(h)) { + return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ422P + : AV_PIX_FMT_YUV422P; + } else { + int i; + const enum AVPixelFormat * fmt = h->avctx->codec->pix_fmts ? + h->avctx->codec->pix_fmts : + h->avctx->color_range == AVCOL_RANGE_JPEG ? + h264_hwaccel_pixfmt_list_jpeg_420 : + h264_hwaccel_pixfmt_list_420; + + for (i=0; fmt[i] != AV_PIX_FMT_NONE; i++) + if (fmt[i] == h->avctx->pix_fmt && !force_callback) + return fmt[i]; + return ff_thread_get_format(h->avctx, fmt); + } + break; + default: + av_log(h->avctx, AV_LOG_ERROR, + "Unsupported bit depth: %d\n", h->sps.bit_depth_luma); + return AVERROR_INVALIDDATA; + } +} + +/* export coded and cropped frame dimensions to AVCodecContext */ +static int init_dimensions(H264Context *h) +{ + int width = h->width - (h->sps.crop_right + h->sps.crop_left); + int height = h->height - (h->sps.crop_top + h->sps.crop_bottom); + + /* handle container cropping */ + if (!h->sps.crop && + FFALIGN(h->avctx->width, 16) == h->width && + FFALIGN(h->avctx->height, 16) == h->height) { + width = h->avctx->width; + height = h->avctx->height; + } + + if (width <= 0 || height <= 0) { + av_log(h->avctx, AV_LOG_ERROR, "Invalid cropped dimensions: %dx%d.\n", + width, height); + if (h->avctx->err_recognition & AV_EF_EXPLODE) + return AVERROR_INVALIDDATA; + + av_log(h->avctx, AV_LOG_WARNING, "Ignoring cropping information.\n"); + h->sps.crop_bottom = h->sps.crop_top = h->sps.crop_right = h->sps.crop_left = 0; + h->sps.crop = 0; + + width = h->width; + height = h->height; + } + + h->avctx->coded_width = h->width; + h->avctx->coded_height = h->height; + h->avctx->width = width; + h->avctx->height = height; + + return 0; +} + +static int h264_slice_header_init(H264Context *h, int reinit) +{ + int nb_slices = (HAVE_THREADS && + h->avctx->active_thread_type & FF_THREAD_SLICE) ? + h->avctx->thread_count : 1; + int i; + + h->avctx->sample_aspect_ratio = h->sps.sar; + av_assert0(h->avctx->sample_aspect_ratio.den); + av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt, + &h->chroma_x_shift, &h->chroma_y_shift); + + if (h->sps.timing_info_present_flag) { + int64_t den = h->sps.time_scale; + if (h->x264_build < 44U) + den *= 2; + av_reduce(&h->avctx->time_base.num, &h->avctx->time_base.den, + h->sps.num_units_in_tick, den, 1 << 30); + } + + h->avctx->hwaccel = ff_find_hwaccel(h->avctx->codec->id, h->avctx->pix_fmt); + + if (reinit) + free_tables(h, 0); + h->first_field = 0; + h->prev_interlaced_frame = 1; + + init_scan_tables(h); + if (ff_h264_alloc_tables(h) < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "Could not allocate memory for h264\n"); + return AVERROR(ENOMEM); + } + + if (nb_slices > MAX_THREADS || (nb_slices > h->mb_height && h->mb_height)) { + int max_slices; + if (h->mb_height) + max_slices = FFMIN(MAX_THREADS, h->mb_height); + else + max_slices = MAX_THREADS; + av_log(h->avctx, AV_LOG_WARNING, "too many threads/slices (%d)," + " reducing to %d\n", nb_slices, max_slices); + nb_slices = max_slices; + } + h->slice_context_count = nb_slices; + + if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) { + if (context_init(h) < 0) { + av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n"); + return -1; + } + } else { + for (i = 1; i < h->slice_context_count; i++) { + H264Context *c; + c = h->thread_context[i] = av_mallocz(sizeof(H264Context)); + c->avctx = h->avctx; + if (CONFIG_ERROR_RESILIENCE) { + c->dsp = h->dsp; + } + c->vdsp = h->vdsp; + c->h264dsp = h->h264dsp; + c->h264qpel = h->h264qpel; + c->h264chroma = h->h264chroma; + c->sps = h->sps; + c->pps = h->pps; + c->pixel_shift = h->pixel_shift; + c->cur_chroma_format_idc = h->cur_chroma_format_idc; + c->width = h->width; + c->height = h->height; + c->linesize = h->linesize; + c->uvlinesize = h->uvlinesize; + c->chroma_x_shift = h->chroma_x_shift; + c->chroma_y_shift = h->chroma_y_shift; + c->qscale = h->qscale; + c->droppable = h->droppable; + c->data_partitioning = h->data_partitioning; + c->low_delay = h->low_delay; + c->mb_width = h->mb_width; + c->mb_height = h->mb_height; + c->mb_stride = h->mb_stride; + c->mb_num = h->mb_num; + c->flags = h->flags; + c->workaround_bugs = h->workaround_bugs; + c->pict_type = h->pict_type; + + init_scan_tables(c); + clone_tables(c, h, i); + c->context_initialized = 1; + } + + for (i = 0; i < h->slice_context_count; i++) + if (context_init(h->thread_context[i]) < 0) { + av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n"); + return -1; + } + } + + h->context_initialized = 1; + + return 0; +} + +/** + * Decode a slice header. + * This will also call ff_MPV_common_init() and frame_start() as needed. + * + * @param h h264context + * @param h0 h264 master context (differs from 'h' when doing sliced based + * parallel decoding) + * + * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded + */ +static int decode_slice_header(H264Context *h, H264Context *h0) +{ + unsigned int first_mb_in_slice; + unsigned int pps_id; + int num_ref_idx_active_override_flag, ret; + unsigned int slice_type, tmp, i, j; + int last_pic_structure, last_pic_droppable; + int must_reinit; + int needs_reinit = 0; + + h->me.qpel_put = h->h264qpel.put_h264_qpel_pixels_tab; + h->me.qpel_avg = h->h264qpel.avg_h264_qpel_pixels_tab; + + first_mb_in_slice = get_ue_golomb_long(&h->gb); + + if (first_mb_in_slice == 0) { // FIXME better field boundary detection + if (h0->current_slice && FIELD_PICTURE(h)) { + field_end(h, 1); + } + + h0->current_slice = 0; + if (!h0->first_field) { + if (h->cur_pic_ptr && !h->droppable) { + ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, + h->picture_structure == PICT_BOTTOM_FIELD); + } + h->cur_pic_ptr = NULL; + } + } + + slice_type = get_ue_golomb_31(&h->gb); + if (slice_type > 9) { + av_log(h->avctx, AV_LOG_ERROR, + "slice type too large (%d) at %d %d\n", + slice_type, h->mb_x, h->mb_y); + return -1; + } + if (slice_type > 4) { + slice_type -= 5; + h->slice_type_fixed = 1; + } else + h->slice_type_fixed = 0; + + slice_type = golomb_to_pict_type[slice_type]; + h->slice_type = slice_type; + h->slice_type_nos = slice_type & 3; + + // to make a few old functions happy, it's wrong though + h->pict_type = h->slice_type; + + pps_id = get_ue_golomb(&h->gb); + if (pps_id >= MAX_PPS_COUNT) { + av_log(h->avctx, AV_LOG_ERROR, "pps_id %d out of range\n", pps_id); + return -1; + } + if (!h0->pps_buffers[pps_id]) { + av_log(h->avctx, AV_LOG_ERROR, + "non-existing PPS %u referenced\n", + pps_id); + return -1; + } + h->pps = *h0->pps_buffers[pps_id]; + + if (!h0->sps_buffers[h->pps.sps_id]) { + av_log(h->avctx, AV_LOG_ERROR, + "non-existing SPS %u referenced\n", + h->pps.sps_id); + return -1; + } + + if (h->pps.sps_id != h->current_sps_id || + h0->sps_buffers[h->pps.sps_id]->new) { + h0->sps_buffers[h->pps.sps_id]->new = 0; + + h->current_sps_id = h->pps.sps_id; + h->sps = *h0->sps_buffers[h->pps.sps_id]; + + if (h->mb_width != h->sps.mb_width || + h->mb_height != h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) || + h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma || + h->cur_chroma_format_idc != h->sps.chroma_format_idc + ) + needs_reinit = 1; + + if (h->bit_depth_luma != h->sps.bit_depth_luma || + h->chroma_format_idc != h->sps.chroma_format_idc) { + h->bit_depth_luma = h->sps.bit_depth_luma; + h->chroma_format_idc = h->sps.chroma_format_idc; + needs_reinit = 1; + } + if ((ret = h264_set_parameter_from_sps(h)) < 0) + return ret; + } + + h->avctx->profile = ff_h264_get_profile(&h->sps); + h->avctx->level = h->sps.level_idc; + h->avctx->refs = h->sps.ref_frame_count; + + must_reinit = (h->context_initialized && + ( 16*h->sps.mb_width != h->avctx->coded_width + || 16*h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) != h->avctx->coded_height + || h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma + || h->cur_chroma_format_idc != h->sps.chroma_format_idc + || av_cmp_q(h->sps.sar, h->avctx->sample_aspect_ratio))); + if (h0->avctx->pix_fmt != get_pixel_format(h0, 0)) + must_reinit = 1; + + h->mb_width = h->sps.mb_width; + h->mb_height = h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag); + h->mb_num = h->mb_width * h->mb_height; + h->mb_stride = h->mb_width + 1; + + h->b_stride = h->mb_width * 4; + + h->chroma_y_shift = h->sps.chroma_format_idc <= 1; // 400 uses yuv420p + + h->width = 16 * h->mb_width; + h->height = 16 * h->mb_height; + + ret = init_dimensions(h); + if (ret < 0) + return ret; + + if (h->sps.video_signal_type_present_flag) { + h->avctx->color_range = h->sps.full_range>0 ? AVCOL_RANGE_JPEG + : AVCOL_RANGE_MPEG; + if (h->sps.colour_description_present_flag) { + if (h->avctx->colorspace != h->sps.colorspace) + needs_reinit = 1; + h->avctx->color_primaries = h->sps.color_primaries; + h->avctx->color_trc = h->sps.color_trc; + h->avctx->colorspace = h->sps.colorspace; + } + } + + if (h->context_initialized && + (h->width != h->avctx->coded_width || + h->height != h->avctx->coded_height || + must_reinit || + needs_reinit)) { + + if (h != h0) { + av_log(h->avctx, AV_LOG_ERROR, "changing width/height on " + "slice %d\n", h0->current_slice + 1); + return AVERROR_INVALIDDATA; + } + + flush_change(h); + + if ((ret = get_pixel_format(h, 1)) < 0) + return ret; + h->avctx->pix_fmt = ret; + + av_log(h->avctx, AV_LOG_INFO, "Reinit context to %dx%d, " + "pix_fmt: %d\n", h->width, h->height, h->avctx->pix_fmt); + + if ((ret = h264_slice_header_init(h, 1)) < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "h264_slice_header_init() failed\n"); + return ret; + } + } + if (!h->context_initialized) { + if (h != h0) { + av_log(h->avctx, AV_LOG_ERROR, + "Cannot (re-)initialize context during parallel decoding.\n"); + return -1; + } + + if ((ret = get_pixel_format(h, 1)) < 0) + return ret; + h->avctx->pix_fmt = ret; + + if ((ret = h264_slice_header_init(h, 0)) < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "h264_slice_header_init() failed\n"); + return ret; + } + } + + if (h == h0 && h->dequant_coeff_pps != pps_id) { + h->dequant_coeff_pps = pps_id; + init_dequant_tables(h); + } + + h->frame_num = get_bits(&h->gb, h->sps.log2_max_frame_num); + + h->mb_mbaff = 0; + h->mb_aff_frame = 0; + last_pic_structure = h0->picture_structure; + last_pic_droppable = h0->droppable; + h->droppable = h->nal_ref_idc == 0; + if (h->sps.frame_mbs_only_flag) { + h->picture_structure = PICT_FRAME; + } else { + if (!h->sps.direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) { + av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n"); + return -1; + } + if (get_bits1(&h->gb)) { // field_pic_flag + h->picture_structure = PICT_TOP_FIELD + get_bits1(&h->gb); // bottom_field_flag + } else { + h->picture_structure = PICT_FRAME; + h->mb_aff_frame = h->sps.mb_aff; + } + } + h->mb_field_decoding_flag = h->picture_structure != PICT_FRAME; + + if (h0->current_slice != 0) { + if (last_pic_structure != h->picture_structure || + last_pic_droppable != h->droppable) { + av_log(h->avctx, AV_LOG_ERROR, + "Changing field mode (%d -> %d) between slices is not allowed\n", + last_pic_structure, h->picture_structure); + h->picture_structure = last_pic_structure; + h->droppable = last_pic_droppable; + return AVERROR_INVALIDDATA; + } else if (!h0->cur_pic_ptr) { + av_log(h->avctx, AV_LOG_ERROR, + "unset cur_pic_ptr on %d. slice\n", + h0->current_slice + 1); + return AVERROR_INVALIDDATA; + } + } else { + /* Shorten frame num gaps so we don't have to allocate reference + * frames just to throw them away */ + if (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0) { + int unwrap_prev_frame_num = h->prev_frame_num; + int max_frame_num = 1 << h->sps.log2_max_frame_num; + + if (unwrap_prev_frame_num > h->frame_num) + unwrap_prev_frame_num -= max_frame_num; + + if ((h->frame_num - unwrap_prev_frame_num) > h->sps.ref_frame_count) { + unwrap_prev_frame_num = (h->frame_num - h->sps.ref_frame_count) - 1; + if (unwrap_prev_frame_num < 0) + unwrap_prev_frame_num += max_frame_num; + + h->prev_frame_num = unwrap_prev_frame_num; + } + } + + /* See if we have a decoded first field looking for a pair... + * Here, we're using that to see if we should mark previously + * decode frames as "finished". + * We have to do that before the "dummy" in-between frame allocation, + * since that can modify h->cur_pic_ptr. */ + if (h0->first_field) { + assert(h0->cur_pic_ptr); + assert(h0->cur_pic_ptr->f.data[0]); + assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF); + + /* Mark old field/frame as completed */ + if (!last_pic_droppable && h0->cur_pic_ptr->tf.owner == h0->avctx) { + ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX, + last_pic_structure == PICT_BOTTOM_FIELD); + } + + /* figure out if we have a complementary field pair */ + if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) { + /* Previous field is unmatched. Don't display it, but let it + * remain for reference if marked as such. */ + if (!last_pic_droppable && last_pic_structure != PICT_FRAME) { + ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX, + last_pic_structure == PICT_TOP_FIELD); + } + } else { + if (h0->cur_pic_ptr->frame_num != h->frame_num) { + /* This and previous field were reference, but had + * different frame_nums. Consider this field first in + * pair. Throw away previous field except for reference + * purposes. */ + if (!last_pic_droppable && last_pic_structure != PICT_FRAME) { + ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX, + last_pic_structure == PICT_TOP_FIELD); + } + } else { + /* Second field in complementary pair */ + if (!((last_pic_structure == PICT_TOP_FIELD && + h->picture_structure == PICT_BOTTOM_FIELD) || + (last_pic_structure == PICT_BOTTOM_FIELD && + h->picture_structure == PICT_TOP_FIELD))) { + av_log(h->avctx, AV_LOG_ERROR, + "Invalid field mode combination %d/%d\n", + last_pic_structure, h->picture_structure); + h->picture_structure = last_pic_structure; + h->droppable = last_pic_droppable; + return AVERROR_INVALIDDATA; + } else if (last_pic_droppable != h->droppable) { + avpriv_request_sample(h->avctx, + "Found reference and non-reference fields in the same frame, which"); + h->picture_structure = last_pic_structure; + h->droppable = last_pic_droppable; + return AVERROR_PATCHWELCOME; + } + } + } + } + + while (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0 && !h0->first_field && + h->frame_num != (h->prev_frame_num + 1) % (1 << h->sps.log2_max_frame_num)) { + Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL; + av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n", + h->frame_num, h->prev_frame_num); + if (!h->sps.gaps_in_frame_num_allowed_flag) + for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++) + h->last_pocs[i] = INT_MIN; + if (h264_frame_start(h) < 0) + return -1; + h->prev_frame_num++; + h->prev_frame_num %= 1 << h->sps.log2_max_frame_num; + h->cur_pic_ptr->frame_num = h->prev_frame_num; + ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0); + ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1); + if ((ret = ff_generate_sliding_window_mmcos(h, 1)) < 0 && + h->avctx->err_recognition & AV_EF_EXPLODE) + return ret; + if (ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index) < 0 && + (h->avctx->err_recognition & AV_EF_EXPLODE)) + return AVERROR_INVALIDDATA; + /* Error concealment: if a ref is missing, copy the previous ref in its place. + * FIXME: avoiding a memcpy would be nice, but ref handling makes many assumptions + * about there being no actual duplicates. + * FIXME: this doesn't copy padding for out-of-frame motion vectors. Given we're + * concealing a lost frame, this probably isn't noticeable by comparison, but it should + * be fixed. */ + if (h->short_ref_count) { + if (prev) { + av_image_copy(h->short_ref[0]->f.data, h->short_ref[0]->f.linesize, + (const uint8_t **)prev->f.data, prev->f.linesize, + h->avctx->pix_fmt, h->mb_width * 16, h->mb_height * 16); + h->short_ref[0]->poc = prev->poc + 2; + } + h->short_ref[0]->frame_num = h->prev_frame_num; + } + } + + /* See if we have a decoded first field looking for a pair... + * We're using that to see whether to continue decoding in that + * frame, or to allocate a new one. */ + if (h0->first_field) { + assert(h0->cur_pic_ptr); + assert(h0->cur_pic_ptr->f.data[0]); + assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF); + + /* figure out if we have a complementary field pair */ + if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) { + /* Previous field is unmatched. Don't display it, but let it + * remain for reference if marked as such. */ + h0->cur_pic_ptr = NULL; + h0->first_field = FIELD_PICTURE(h); + } else { + if (h0->cur_pic_ptr->frame_num != h->frame_num) { + ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX, + h0->picture_structure==PICT_BOTTOM_FIELD); + /* This and the previous field had different frame_nums. + * Consider this field first in pair. Throw away previous + * one except for reference purposes. */ + h0->first_field = 1; + h0->cur_pic_ptr = NULL; + } else { + /* Second field in complementary pair */ + h0->first_field = 0; + } + } + } else { + /* Frame or first field in a potentially complementary pair */ + h0->first_field = FIELD_PICTURE(h); + } + + if (!FIELD_PICTURE(h) || h0->first_field) { + if (h264_frame_start(h) < 0) { + h0->first_field = 0; + return -1; + } + } else { + release_unused_pictures(h, 0); + } + /* Some macroblocks can be accessed before they're available in case + * of lost slices, MBAFF or threading. */ + if (FIELD_PICTURE(h)) { + for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++) + memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table)); + } else { + memset(h->slice_table, -1, + (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table)); + } + h0->last_slice_type = -1; + } + if (h != h0 && (ret = clone_slice(h, h0)) < 0) + return ret; + + /* can't be in alloc_tables because linesize isn't known there. + * FIXME: redo bipred weight to not require extra buffer? */ + for (i = 0; i < h->slice_context_count; i++) + if (h->thread_context[i]) { + ret = alloc_scratch_buffers(h->thread_context[i], h->linesize); + if (ret < 0) + return ret; + } + + h->cur_pic_ptr->frame_num = h->frame_num; // FIXME frame_num cleanup + + av_assert1(h->mb_num == h->mb_width * h->mb_height); + if (first_mb_in_slice << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num || + first_mb_in_slice >= h->mb_num) { + av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n"); + return -1; + } + h->resync_mb_x = h->mb_x = first_mb_in_slice % h->mb_width; + h->resync_mb_y = h->mb_y = (first_mb_in_slice / h->mb_width) << FIELD_OR_MBAFF_PICTURE(h); + if (h->picture_structure == PICT_BOTTOM_FIELD) + h->resync_mb_y = h->mb_y = h->mb_y + 1; + av_assert1(h->mb_y < h->mb_height); + + if (h->picture_structure == PICT_FRAME) { + h->curr_pic_num = h->frame_num; + h->max_pic_num = 1 << h->sps.log2_max_frame_num; + } else { + h->curr_pic_num = 2 * h->frame_num + 1; + h->max_pic_num = 1 << (h->sps.log2_max_frame_num + 1); + } + + if (h->nal_unit_type == NAL_IDR_SLICE) + get_ue_golomb(&h->gb); /* idr_pic_id */ + + if (h->sps.poc_type == 0) { + h->poc_lsb = get_bits(&h->gb, h->sps.log2_max_poc_lsb); + + if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME) + h->delta_poc_bottom = get_se_golomb(&h->gb); + } + + if (h->sps.poc_type == 1 && !h->sps.delta_pic_order_always_zero_flag) { + h->delta_poc[0] = get_se_golomb(&h->gb); + + if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME) + h->delta_poc[1] = get_se_golomb(&h->gb); + } + + init_poc(h); + + if (h->pps.redundant_pic_cnt_present) + h->redundant_pic_count = get_ue_golomb(&h->gb); + + // set defaults, might be overridden a few lines later + h->ref_count[0] = h->pps.ref_count[0]; + h->ref_count[1] = h->pps.ref_count[1]; + + if (h->slice_type_nos != AV_PICTURE_TYPE_I) { + unsigned max[2]; + max[0] = max[1] = h->picture_structure == PICT_FRAME ? 15 : 31; + + if (h->slice_type_nos == AV_PICTURE_TYPE_B) + h->direct_spatial_mv_pred = get_bits1(&h->gb); + num_ref_idx_active_override_flag = get_bits1(&h->gb); + + if (num_ref_idx_active_override_flag) { + h->ref_count[0] = get_ue_golomb(&h->gb) + 1; + if (h->slice_type_nos == AV_PICTURE_TYPE_B) { + h->ref_count[1] = get_ue_golomb(&h->gb) + 1; + } else + // full range is spec-ok in this case, even for frames + h->ref_count[1] = 1; + } + + if (h->ref_count[0]-1 > max[0] || h->ref_count[1]-1 > max[1]){ + av_log(h->avctx, AV_LOG_ERROR, "reference overflow %u > %u or %u > %u\n", h->ref_count[0]-1, max[0], h->ref_count[1]-1, max[1]); + h->ref_count[0] = h->ref_count[1] = 0; + return AVERROR_INVALIDDATA; + } + + if (h->slice_type_nos == AV_PICTURE_TYPE_B) + h->list_count = 2; + else + h->list_count = 1; + } else { + h->list_count = 0; + h->ref_count[0] = h->ref_count[1] = 0; + } + if (slice_type != AV_PICTURE_TYPE_I && + (h0->current_slice == 0 || + slice_type != h0->last_slice_type || + memcmp(h0->last_ref_count, h0->ref_count, sizeof(h0->ref_count)))) { + ff_h264_fill_default_ref_list(h); + } + + if (h->slice_type_nos != AV_PICTURE_TYPE_I && + ff_h264_decode_ref_pic_list_reordering(h) < 0) { + h->ref_count[1] = h->ref_count[0] = 0; + return -1; + } + + if ((h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P) || + (h->pps.weighted_bipred_idc == 1 && + h->slice_type_nos == AV_PICTURE_TYPE_B)) + pred_weight_table(h); + else if (h->pps.weighted_bipred_idc == 2 && + h->slice_type_nos == AV_PICTURE_TYPE_B) { + implicit_weight_table(h, -1); + } else { + h->use_weight = 0; + for (i = 0; i < 2; i++) { + h->luma_weight_flag[i] = 0; + h->chroma_weight_flag[i] = 0; + } + } + + // If frame-mt is enabled, only update mmco tables for the first slice + // in a field. Subsequent slices can temporarily clobber h->mmco_index + // or h->mmco, which will cause ref list mix-ups and decoding errors + // further down the line. This may break decoding if the first slice is + // corrupt, thus we only do this if frame-mt is enabled. + if (h->nal_ref_idc && + ff_h264_decode_ref_pic_marking(h0, &h->gb, + !(h->avctx->active_thread_type & FF_THREAD_FRAME) || + h0->current_slice == 0) < 0 && + (h->avctx->err_recognition & AV_EF_EXPLODE)) + return AVERROR_INVALIDDATA; + + if (FRAME_MBAFF(h)) { + ff_h264_fill_mbaff_ref_list(h); + + if (h->pps.weighted_bipred_idc == 2 && h->slice_type_nos == AV_PICTURE_TYPE_B) { + implicit_weight_table(h, 0); + implicit_weight_table(h, 1); + } + } + + if (h->slice_type_nos == AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred) + ff_h264_direct_dist_scale_factor(h); + ff_h264_direct_ref_list_init(h); + + if (h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac) { + tmp = get_ue_golomb_31(&h->gb); + if (tmp > 2) { + av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n"); + return -1; + } + h->cabac_init_idc = tmp; + } + + h->last_qscale_diff = 0; + tmp = h->pps.init_qp + get_se_golomb(&h->gb); + if (tmp > 51 + 6 * (h->sps.bit_depth_luma - 8)) { + av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp); + return -1; + } + h->qscale = tmp; + h->chroma_qp[0] = get_chroma_qp(h, 0, h->qscale); + h->chroma_qp[1] = get_chroma_qp(h, 1, h->qscale); + // FIXME qscale / qp ... stuff + if (h->slice_type == AV_PICTURE_TYPE_SP) + get_bits1(&h->gb); /* sp_for_switch_flag */ + if (h->slice_type == AV_PICTURE_TYPE_SP || + h->slice_type == AV_PICTURE_TYPE_SI) + get_se_golomb(&h->gb); /* slice_qs_delta */ + + h->deblocking_filter = 1; + h->slice_alpha_c0_offset = 52; + h->slice_beta_offset = 52; + if (h->pps.deblocking_filter_parameters_present) { + tmp = get_ue_golomb_31(&h->gb); + if (tmp > 2) { + av_log(h->avctx, AV_LOG_ERROR, + "deblocking_filter_idc %u out of range\n", tmp); + return -1; + } + h->deblocking_filter = tmp; + if (h->deblocking_filter < 2) + h->deblocking_filter ^= 1; // 1<->0 + + if (h->deblocking_filter) { + h->slice_alpha_c0_offset += get_se_golomb(&h->gb) << 1; + h->slice_beta_offset += get_se_golomb(&h->gb) << 1; + if (h->slice_alpha_c0_offset > 104U || + h->slice_beta_offset > 104U) { + av_log(h->avctx, AV_LOG_ERROR, + "deblocking filter parameters %d %d out of range\n", + h->slice_alpha_c0_offset, h->slice_beta_offset); + return -1; + } + } + } + + if (h->avctx->skip_loop_filter >= AVDISCARD_ALL || + (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY && + h->slice_type_nos != AV_PICTURE_TYPE_I) || + (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR && + h->slice_type_nos == AV_PICTURE_TYPE_B) || + (h->avctx->skip_loop_filter >= AVDISCARD_NONREF && + h->nal_ref_idc == 0)) + h->deblocking_filter = 0; + + if (h->deblocking_filter == 1 && h0->max_contexts > 1) { + if (h->avctx->flags2 & CODEC_FLAG2_FAST) { + /* Cheat slightly for speed: + * Do not bother to deblock across slices. */ + h->deblocking_filter = 2; + } else { + h0->max_contexts = 1; + if (!h0->single_decode_warning) { + av_log(h->avctx, AV_LOG_INFO, + "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n"); + h0->single_decode_warning = 1; + } + if (h != h0) { + av_log(h->avctx, AV_LOG_ERROR, + "Deblocking switched inside frame.\n"); + return 1; + } + } + } + h->qp_thresh = 15 + 52 - + FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) - + FFMAX3(0, + h->pps.chroma_qp_index_offset[0], + h->pps.chroma_qp_index_offset[1]) + + 6 * (h->sps.bit_depth_luma - 8); + + h0->last_slice_type = slice_type; + memcpy(h0->last_ref_count, h0->ref_count, sizeof(h0->last_ref_count)); + h->slice_num = ++h0->current_slice; + + if (h->slice_num) + h0->slice_row[(h->slice_num-1)&(MAX_SLICES-1)]= h->resync_mb_y; + if ( h0->slice_row[h->slice_num&(MAX_SLICES-1)] + 3 >= h->resync_mb_y + && h0->slice_row[h->slice_num&(MAX_SLICES-1)] <= h->resync_mb_y + && h->slice_num >= MAX_SLICES) { + //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case + av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", h->slice_num, MAX_SLICES); + } + + for (j = 0; j < 2; j++) { + int id_list[16]; + int *ref2frm = h->ref2frm[h->slice_num & (MAX_SLICES - 1)][j]; + for (i = 0; i < 16; i++) { + id_list[i] = 60; + if (j < h->list_count && i < h->ref_count[j] && h->ref_list[j][i].f.buf[0]) { + int k; + AVBuffer *buf = h->ref_list[j][i].f.buf[0]->buffer; + for (k = 0; k < h->short_ref_count; k++) + if (h->short_ref[k]->f.buf[0]->buffer == buf) { + id_list[i] = k; + break; + } + for (k = 0; k < h->long_ref_count; k++) + if (h->long_ref[k] && h->long_ref[k]->f.buf[0]->buffer == buf) { + id_list[i] = h->short_ref_count + k; + break; + } + } + } + + ref2frm[0] = + ref2frm[1] = -1; + for (i = 0; i < 16; i++) + ref2frm[i + 2] = 4 * id_list[i] + + (h->ref_list[j][i].reference & 3); + ref2frm[18 + 0] = + ref2frm[18 + 1] = -1; + for (i = 16; i < 48; i++) + ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] + + (h->ref_list[j][i].reference & 3); + } + + if (h->ref_count[0]) h->er.last_pic = &h->ref_list[0][0]; + if (h->ref_count[1]) h->er.next_pic = &h->ref_list[1][0]; + + if (h->avctx->debug & FF_DEBUG_PICT_INFO) { + av_log(h->avctx, AV_LOG_DEBUG, + "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n", + h->slice_num, + (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"), + first_mb_in_slice, + av_get_picture_type_char(h->slice_type), + h->slice_type_fixed ? " fix" : "", + h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "", + pps_id, h->frame_num, + h->cur_pic_ptr->field_poc[0], + h->cur_pic_ptr->field_poc[1], + h->ref_count[0], h->ref_count[1], + h->qscale, + h->deblocking_filter, + h->slice_alpha_c0_offset / 2 - 26, h->slice_beta_offset / 2 - 26, + h->use_weight, + h->use_weight == 1 && h->use_weight_chroma ? "c" : "", + h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : ""); + } + + return 0; +} + +int ff_h264_get_slice_type(const H264Context *h) +{ + switch (h->slice_type) { + case AV_PICTURE_TYPE_P: + return 0; + case AV_PICTURE_TYPE_B: + return 1; + case AV_PICTURE_TYPE_I: + return 2; + case AV_PICTURE_TYPE_SP: + return 3; + case AV_PICTURE_TYPE_SI: + return 4; + default: + return -1; + } +} + +static av_always_inline void fill_filter_caches_inter(H264Context *h, + int mb_type, int top_xy, + int left_xy[LEFT_MBS], + int top_type, + int left_type[LEFT_MBS], + int mb_xy, int list) +{ + int b_stride = h->b_stride; + int16_t(*mv_dst)[2] = &h->mv_cache[list][scan8[0]]; + int8_t *ref_cache = &h->ref_cache[list][scan8[0]]; + if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) { + if (USES_LIST(top_type, list)) { + const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride; + const int b8_xy = 4 * top_xy + 2; + int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2)); + AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]); + ref_cache[0 - 1 * 8] = + ref_cache[1 - 1 * 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 0]]; + ref_cache[2 - 1 * 8] = + ref_cache[3 - 1 * 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 1]]; + } else { + AV_ZERO128(mv_dst - 1 * 8); + AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); + } + + if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) { + if (USES_LIST(left_type[LTOP], list)) { + const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3; + const int b8_xy = 4 * left_xy[LTOP] + 1; + int (*ref2frm)[64] =(void*)( h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2)); + AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]); + AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]); + AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]); + AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]); + ref_cache[-1 + 0] = + ref_cache[-1 + 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 2 * 0]]; + ref_cache[-1 + 16] = + ref_cache[-1 + 24] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 2 * 1]]; + } else { + AV_ZERO32(mv_dst - 1 + 0); + AV_ZERO32(mv_dst - 1 + 8); + AV_ZERO32(mv_dst - 1 + 16); + AV_ZERO32(mv_dst - 1 + 24); + ref_cache[-1 + 0] = + ref_cache[-1 + 8] = + ref_cache[-1 + 16] = + ref_cache[-1 + 24] = LIST_NOT_USED; + } + } + } + + if (!USES_LIST(mb_type, list)) { + fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4); + AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); + AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); + AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); + AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u); + return; + } + + { + int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy]; + int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_num & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2)); + uint32_t ref01 = (pack16to32(ref2frm[list][ref[0]], ref2frm[list][ref[1]]) & 0x00FF00FF) * 0x0101; + uint32_t ref23 = (pack16to32(ref2frm[list][ref[2]], ref2frm[list][ref[3]]) & 0x00FF00FF) * 0x0101; + AV_WN32A(&ref_cache[0 * 8], ref01); + AV_WN32A(&ref_cache[1 * 8], ref01); + AV_WN32A(&ref_cache[2 * 8], ref23); + AV_WN32A(&ref_cache[3 * 8], ref23); + } + + { + int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * h->mb_x + 4 * h->mb_y * b_stride]; + AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride); + AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride); + AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride); + AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride); + } +} + +/** + * + * @return non zero if the loop filter can be skipped + */ +static int fill_filter_caches(H264Context *h, int mb_type) +{ + const int mb_xy = h->mb_xy; + int top_xy, left_xy[LEFT_MBS]; + int top_type, left_type[LEFT_MBS]; + uint8_t *nnz; + uint8_t *nnz_cache; + + top_xy = mb_xy - (h->mb_stride << MB_FIELD(h)); + + /* Wow, what a mess, why didn't they simplify the interlacing & intra + * stuff, I can't imagine that these complex rules are worth it. */ + + left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1; + if (FRAME_MBAFF(h)) { + const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]); + const int curr_mb_field_flag = IS_INTERLACED(mb_type); + if (h->mb_y & 1) { + if (left_mb_field_flag != curr_mb_field_flag) + left_xy[LTOP] -= h->mb_stride; + } else { + if (curr_mb_field_flag) + top_xy += h->mb_stride & + (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1); + if (left_mb_field_flag != curr_mb_field_flag) + left_xy[LBOT] += h->mb_stride; + } + } + + h->top_mb_xy = top_xy; + h->left_mb_xy[LTOP] = left_xy[LTOP]; + h->left_mb_xy[LBOT] = left_xy[LBOT]; + { + /* For sufficiently low qp, filtering wouldn't do anything. + * This is a conservative estimate: could also check beta_offset + * and more accurate chroma_qp. */ + int qp_thresh = h->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice + int qp = h->cur_pic.qscale_table[mb_xy]; + if (qp <= qp_thresh && + (left_xy[LTOP] < 0 || + ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) && + (top_xy < 0 || + ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) { + if (!FRAME_MBAFF(h)) + return 1; + if ((left_xy[LTOP] < 0 || + ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) && + (top_xy < h->mb_stride || + ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh)) + return 1; + } + } + + top_type = h->cur_pic.mb_type[top_xy]; + left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]]; + left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]]; + if (h->deblocking_filter == 2) { + if (h->slice_table[top_xy] != h->slice_num) + top_type = 0; + if (h->slice_table[left_xy[LBOT]] != h->slice_num) + left_type[LTOP] = left_type[LBOT] = 0; + } else { + if (h->slice_table[top_xy] == 0xFFFF) + top_type = 0; + if (h->slice_table[left_xy[LBOT]] == 0xFFFF) + left_type[LTOP] = left_type[LBOT] = 0; + } + h->top_type = top_type; + h->left_type[LTOP] = left_type[LTOP]; + h->left_type[LBOT] = left_type[LBOT]; + + if (IS_INTRA(mb_type)) + return 0; + + fill_filter_caches_inter(h, mb_type, top_xy, left_xy, + top_type, left_type, mb_xy, 0); + if (h->list_count == 2) + fill_filter_caches_inter(h, mb_type, top_xy, left_xy, + top_type, left_type, mb_xy, 1); + + nnz = h->non_zero_count[mb_xy]; + nnz_cache = h->non_zero_count_cache; + AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]); + AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]); + AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]); + AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]); + h->cbp = h->cbp_table[mb_xy]; + + if (top_type) { + nnz = h->non_zero_count[top_xy]; + AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]); + } + + if (left_type[LTOP]) { + nnz = h->non_zero_count[left_xy[LTOP]]; + nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4]; + nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4]; + nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4]; + nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4]; + } + + /* CAVLC 8x8dct requires NNZ values for residual decoding that differ + * from what the loop filter needs */ + if (!CABAC(h) && h->pps.transform_8x8_mode) { + if (IS_8x8DCT(top_type)) { + nnz_cache[4 + 8 * 0] = + nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12; + nnz_cache[6 + 8 * 0] = + nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12; + } + if (IS_8x8DCT(left_type[LTOP])) { + nnz_cache[3 + 8 * 1] = + nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF + } + if (IS_8x8DCT(left_type[LBOT])) { + nnz_cache[3 + 8 * 3] = + nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF + } + + if (IS_8x8DCT(mb_type)) { + nnz_cache[scan8[0]] = + nnz_cache[scan8[1]] = + nnz_cache[scan8[2]] = + nnz_cache[scan8[3]] = (h->cbp & 0x1000) >> 12; + + nnz_cache[scan8[0 + 4]] = + nnz_cache[scan8[1 + 4]] = + nnz_cache[scan8[2 + 4]] = + nnz_cache[scan8[3 + 4]] = (h->cbp & 0x2000) >> 12; + + nnz_cache[scan8[0 + 8]] = + nnz_cache[scan8[1 + 8]] = + nnz_cache[scan8[2 + 8]] = + nnz_cache[scan8[3 + 8]] = (h->cbp & 0x4000) >> 12; + + nnz_cache[scan8[0 + 12]] = + nnz_cache[scan8[1 + 12]] = + nnz_cache[scan8[2 + 12]] = + nnz_cache[scan8[3 + 12]] = (h->cbp & 0x8000) >> 12; + } + } + + return 0; +} + +static void loop_filter(H264Context *h, int start_x, int end_x) +{ + uint8_t *dest_y, *dest_cb, *dest_cr; + int linesize, uvlinesize, mb_x, mb_y; + const int end_mb_y = h->mb_y + FRAME_MBAFF(h); + const int old_slice_type = h->slice_type; + const int pixel_shift = h->pixel_shift; + const int block_h = 16 >> h->chroma_y_shift; + + if (h->deblocking_filter) { + for (mb_x = start_x; mb_x < end_x; mb_x++) + for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) { + int mb_xy, mb_type; + mb_xy = h->mb_xy = mb_x + mb_y * h->mb_stride; + h->slice_num = h->slice_table[mb_xy]; + mb_type = h->cur_pic.mb_type[mb_xy]; + h->list_count = h->list_counts[mb_xy]; + + if (FRAME_MBAFF(h)) + h->mb_mbaff = + h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type); + + h->mb_x = mb_x; + h->mb_y = mb_y; + dest_y = h->cur_pic.f.data[0] + + ((mb_x << pixel_shift) + mb_y * h->linesize) * 16; + dest_cb = h->cur_pic.f.data[1] + + (mb_x << pixel_shift) * (8 << CHROMA444(h)) + + mb_y * h->uvlinesize * block_h; + dest_cr = h->cur_pic.f.data[2] + + (mb_x << pixel_shift) * (8 << CHROMA444(h)) + + mb_y * h->uvlinesize * block_h; + // FIXME simplify above + + if (MB_FIELD(h)) { + linesize = h->mb_linesize = h->linesize * 2; + uvlinesize = h->mb_uvlinesize = h->uvlinesize * 2; + if (mb_y & 1) { // FIXME move out of this function? + dest_y -= h->linesize * 15; + dest_cb -= h->uvlinesize * (block_h - 1); + dest_cr -= h->uvlinesize * (block_h - 1); + } + } else { + linesize = h->mb_linesize = h->linesize; + uvlinesize = h->mb_uvlinesize = h->uvlinesize; + } + backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize, + uvlinesize, 0); + if (fill_filter_caches(h, mb_type)) + continue; + h->chroma_qp[0] = get_chroma_qp(h, 0, h->cur_pic.qscale_table[mb_xy]); + h->chroma_qp[1] = get_chroma_qp(h, 1, h->cur_pic.qscale_table[mb_xy]); + + if (FRAME_MBAFF(h)) { + ff_h264_filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr, + linesize, uvlinesize); + } else { + ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb, + dest_cr, linesize, uvlinesize); + } + } + } + h->slice_type = old_slice_type; + h->mb_x = end_x; + h->mb_y = end_mb_y - FRAME_MBAFF(h); + h->chroma_qp[0] = get_chroma_qp(h, 0, h->qscale); + h->chroma_qp[1] = get_chroma_qp(h, 1, h->qscale); +} + +static void predict_field_decoding_flag(H264Context *h) +{ + const int mb_xy = h->mb_x + h->mb_y * h->mb_stride; + int mb_type = (h->slice_table[mb_xy - 1] == h->slice_num) ? + h->cur_pic.mb_type[mb_xy - 1] : + (h->slice_table[mb_xy - h->mb_stride] == h->slice_num) ? + h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0; + h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0; +} + +/** + * Draw edges and report progress for the last MB row. + */ +static void decode_finish_row(H264Context *h) +{ + int top = 16 * (h->mb_y >> FIELD_PICTURE(h)); + int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h); + int height = 16 << FRAME_MBAFF(h); + int deblock_border = (16 + 4) << FRAME_MBAFF(h); + + if (h->deblocking_filter) { + if ((top + height) >= pic_height) + height += deblock_border; + top -= deblock_border; + } + + if (top >= pic_height || (top + height) < 0) + return; + + height = FFMIN(height, pic_height - top); + if (top < 0) { + height = top + height; + top = 0; + } + + ff_h264_draw_horiz_band(h, top, height); + + if (h->droppable || h->er.error_occurred) + return; + + ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1, + h->picture_structure == PICT_BOTTOM_FIELD); +} + +static void er_add_slice(H264Context *h, int startx, int starty, + int endx, int endy, int status) +{ + if (CONFIG_ERROR_RESILIENCE) { + ERContext *er = &h->er; + + er->ref_count = h->ref_count[0]; + ff_er_add_slice(er, startx, starty, endx, endy, status); + } +} + +static int decode_slice(struct AVCodecContext *avctx, void *arg) +{ + H264Context *h = *(void **)arg; + int lf_x_start = h->mb_x; + + h->mb_skip_run = -1; + + av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * h->linesize * ((scan8[15] - scan8[0]) >> 3)); + + h->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME || + avctx->codec_id != AV_CODEC_ID_H264 || + (CONFIG_GRAY && (h->flags & CODEC_FLAG_GRAY)); + + if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME) { + const int start_i = av_clip(h->resync_mb_x + h->resync_mb_y * h->mb_width, 0, h->mb_num - 1); + if (start_i) { + int prev_status = h->er.error_status_table[h->er.mb_index2xy[start_i - 1]]; + prev_status &= ~ VP_START; + if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END)) + h->er.error_occurred = 1; + } + } + + if (h->pps.cabac) { + /* realign */ + align_get_bits(&h->gb); + + /* init cabac */ + ff_init_cabac_decoder(&h->cabac, + h->gb.buffer + get_bits_count(&h->gb) / 8, + (get_bits_left(&h->gb) + 7) / 8); + + ff_h264_init_cabac_states(h); + + for (;;) { + // START_TIMER + int ret = ff_h264_decode_mb_cabac(h); + int eos; + // STOP_TIMER("decode_mb_cabac") + + if (ret >= 0) + ff_h264_hl_decode_mb(h); + + // FIXME optimal? or let mb_decode decode 16x32 ? + if (ret >= 0 && FRAME_MBAFF(h)) { + h->mb_y++; + + ret = ff_h264_decode_mb_cabac(h); + + if (ret >= 0) + ff_h264_hl_decode_mb(h); + h->mb_y--; + } + eos = get_cabac_terminate(&h->cabac); + + if ((h->workaround_bugs & FF_BUG_TRUNCATED) && + h->cabac.bytestream > h->cabac.bytestream_end + 2) { + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x - 1, + h->mb_y, ER_MB_END); + if (h->mb_x >= lf_x_start) + loop_filter(h, lf_x_start, h->mb_x + 1); + return 0; + } + if (h->cabac.bytestream > h->cabac.bytestream_end + 2 ) + av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %td\n", h->cabac.bytestream_end - h->cabac.bytestream); + if (ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 4) { + av_log(h->avctx, AV_LOG_ERROR, + "error while decoding MB %d %d, bytestream (%td)\n", + h->mb_x, h->mb_y, + h->cabac.bytestream_end - h->cabac.bytestream); + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x, + h->mb_y, ER_MB_ERROR); + return -1; + } + + if (++h->mb_x >= h->mb_width) { + loop_filter(h, lf_x_start, h->mb_x); + h->mb_x = lf_x_start = 0; + decode_finish_row(h); + ++h->mb_y; + if (FIELD_OR_MBAFF_PICTURE(h)) { + ++h->mb_y; + if (FRAME_MBAFF(h) && h->mb_y < h->mb_height) + predict_field_decoding_flag(h); + } + } + + if (eos || h->mb_y >= h->mb_height) { + tprintf(h->avctx, "slice end %d %d\n", + get_bits_count(&h->gb), h->gb.size_in_bits); + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x - 1, + h->mb_y, ER_MB_END); + if (h->mb_x > lf_x_start) + loop_filter(h, lf_x_start, h->mb_x); + return 0; + } + } + } else { + for (;;) { + int ret = ff_h264_decode_mb_cavlc(h); + + if (ret >= 0) + ff_h264_hl_decode_mb(h); + + // FIXME optimal? or let mb_decode decode 16x32 ? + if (ret >= 0 && FRAME_MBAFF(h)) { + h->mb_y++; + ret = ff_h264_decode_mb_cavlc(h); + + if (ret >= 0) + ff_h264_hl_decode_mb(h); + h->mb_y--; + } + + if (ret < 0) { + av_log(h->avctx, AV_LOG_ERROR, + "error while decoding MB %d %d\n", h->mb_x, h->mb_y); + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x, + h->mb_y, ER_MB_ERROR); + return -1; + } + + if (++h->mb_x >= h->mb_width) { + loop_filter(h, lf_x_start, h->mb_x); + h->mb_x = lf_x_start = 0; + decode_finish_row(h); + ++h->mb_y; + if (FIELD_OR_MBAFF_PICTURE(h)) { + ++h->mb_y; + if (FRAME_MBAFF(h) && h->mb_y < h->mb_height) + predict_field_decoding_flag(h); + } + if (h->mb_y >= h->mb_height) { + tprintf(h->avctx, "slice end %d %d\n", + get_bits_count(&h->gb), h->gb.size_in_bits); + + if ( get_bits_left(&h->gb) == 0 + || get_bits_left(&h->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) { + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, + h->mb_x - 1, h->mb_y, + ER_MB_END); + + return 0; + } else { + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, + h->mb_x, h->mb_y, + ER_MB_END); + + return -1; + } + } + } + + if (get_bits_left(&h->gb) <= 0 && h->mb_skip_run <= 0) { + tprintf(h->avctx, "slice end %d %d\n", + get_bits_count(&h->gb), h->gb.size_in_bits); + if (get_bits_left(&h->gb) == 0) { + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, + h->mb_x - 1, h->mb_y, + ER_MB_END); + if (h->mb_x > lf_x_start) + loop_filter(h, lf_x_start, h->mb_x); + + return 0; + } else { + er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x, + h->mb_y, ER_MB_ERROR); + + return -1; + } + } + } + } +} + +/** + * Call decode_slice() for each context. + * + * @param h h264 master context + * @param context_count number of contexts to execute + */ +static int execute_decode_slices(H264Context *h, int context_count) +{ + AVCodecContext *const avctx = h->avctx; + H264Context *hx; + int i; + + if (h->avctx->hwaccel || + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) + return 0; + if (context_count == 1) { + return decode_slice(avctx, &h); + } else { + av_assert0(context_count > 0); + for (i = 1; i < context_count; i++) { + hx = h->thread_context[i]; + if (CONFIG_ERROR_RESILIENCE) { + hx->er.error_count = 0; + } + hx->x264_build = h->x264_build; + } + + avctx->execute(avctx, decode_slice, h->thread_context, + NULL, context_count, sizeof(void *)); + + /* pull back stuff from slices to master context */ + hx = h->thread_context[context_count - 1]; + h->mb_x = hx->mb_x; + h->mb_y = hx->mb_y; + h->droppable = hx->droppable; + h->picture_structure = hx->picture_structure; + if (CONFIG_ERROR_RESILIENCE) { + for (i = 1; i < context_count; i++) + h->er.error_count += h->thread_context[i]->er.error_count; + } + } + + return 0; +} + +static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size, + int parse_extradata) +{ + AVCodecContext *const avctx = h->avctx; + H264Context *hx; ///< thread context + int buf_index; + int context_count; + int next_avc; + int pass = !(avctx->active_thread_type & FF_THREAD_FRAME); + int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts + int nal_index; + int idr_cleared=0; + int first_slice = 0; + + h->nal_unit_type= 0; + + if(!h->slice_context_count) + h->slice_context_count= 1; + h->max_contexts = h->slice_context_count; + if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) { + h->current_slice = 0; + if (!h->first_field) + h->cur_pic_ptr = NULL; + ff_h264_reset_sei(h); + } + + if (h->nal_length_size == 4) { + if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) { + h->is_avc = 0; + }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size) + h->is_avc = 1; + } + + for (; pass <= 1; pass++) { + buf_index = 0; + context_count = 0; + next_avc = h->is_avc ? 0 : buf_size; + nal_index = 0; + for (;;) { + int consumed; + int dst_length; + int bit_length; + const uint8_t *ptr; + int i, nalsize = 0; + int err; + + if (buf_index >= next_avc) { + if (buf_index >= buf_size - h->nal_length_size) + break; + nalsize = 0; + for (i = 0; i < h->nal_length_size; i++) + nalsize = (nalsize << 8) | buf[buf_index++]; + if (nalsize <= 0 || nalsize > buf_size - buf_index) { + av_log(h->avctx, AV_LOG_ERROR, + "AVC: nal size %d\n", nalsize); + break; + } + next_avc = buf_index + nalsize; + } else { + // start code prefix search + for (; buf_index + 3 < next_avc; buf_index++) + // This should always succeed in the first iteration. + if (buf[buf_index] == 0 && + buf[buf_index + 1] == 0 && + buf[buf_index + 2] == 1) + break; + + if (buf_index + 3 >= buf_size) { + buf_index = buf_size; + break; + } + + buf_index += 3; + if (buf_index >= next_avc) + continue; + } + + hx = h->thread_context[context_count]; + + ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length, + &consumed, next_avc - buf_index); + if (ptr == NULL || dst_length < 0) { + buf_index = -1; + goto end; + } + i = buf_index + consumed; + if ((h->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc && + buf[i] == 0x00 && buf[i + 1] == 0x00 && + buf[i + 2] == 0x01 && buf[i + 3] == 0xE0) + h->workaround_bugs |= FF_BUG_TRUNCATED; + + if (!(h->workaround_bugs & FF_BUG_TRUNCATED)) + while(dst_length > 0 && ptr[dst_length - 1] == 0) + dst_length--; + bit_length = !dst_length ? 0 + : (8 * dst_length - + decode_rbsp_trailing(h, ptr + dst_length - 1)); + + if (h->avctx->debug & FF_DEBUG_STARTCODE) + av_log(h->avctx, AV_LOG_DEBUG, "NAL %d/%d at %d/%d length %d pass %d\n", hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length, pass); + + if (h->is_avc && (nalsize != consumed) && nalsize) + av_log(h->avctx, AV_LOG_DEBUG, + "AVC: Consumed only %d bytes instead of %d\n", + consumed, nalsize); + + buf_index += consumed; + nal_index++; + + if (pass == 0) { + /* packets can sometimes contain multiple PPS/SPS, + * e.g. two PAFF field pictures in one packet, or a demuxer + * which splits NALs strangely if so, when frame threading we + * can't start the next thread until we've read all of them */ + switch (hx->nal_unit_type) { + case NAL_SPS: + case NAL_PPS: + nals_needed = nal_index; + break; + case NAL_DPA: + case NAL_IDR_SLICE: + case NAL_SLICE: + init_get_bits(&hx->gb, ptr, bit_length); + if (!get_ue_golomb(&hx->gb) || !first_slice) + nals_needed = nal_index; + if (!first_slice) + first_slice = hx->nal_unit_type; + } + continue; + } + + if (!first_slice) + switch (hx->nal_unit_type) { + case NAL_DPA: + case NAL_IDR_SLICE: + case NAL_SLICE: + first_slice = hx->nal_unit_type; + } + + // FIXME do not discard SEI id + if (avctx->skip_frame >= AVDISCARD_NONREF && h->nal_ref_idc == 0) + continue; + +again: + /* Ignore per frame NAL unit type during extradata + * parsing. Decoding slices is not possible in codec init + * with frame-mt */ + if (parse_extradata) { + switch (hx->nal_unit_type) { + case NAL_IDR_SLICE: + case NAL_SLICE: + case NAL_DPA: + case NAL_DPB: + case NAL_DPC: + case NAL_AUXILIARY_SLICE: + av_log(h->avctx, AV_LOG_WARNING, "Ignoring NAL %d in global header/extradata\n", hx->nal_unit_type); + hx->nal_unit_type = NAL_FF_IGNORE; + } + } + + err = 0; + + switch (hx->nal_unit_type) { + case NAL_IDR_SLICE: + if (first_slice != NAL_IDR_SLICE) { + av_log(h->avctx, AV_LOG_ERROR, + "Invalid mix of idr and non-idr slices\n"); + buf_index = -1; + goto end; + } + if(!idr_cleared) + idr(h); // FIXME ensure we don't lose some frames if there is reordering + idr_cleared = 1; + case NAL_SLICE: + init_get_bits(&hx->gb, ptr, bit_length); + hx->intra_gb_ptr = + hx->inter_gb_ptr = &hx->gb; + hx->data_partitioning = 0; + + if ((err = decode_slice_header(hx, h))) + break; + + if (h->sei_recovery_frame_cnt >= 0 && (h->frame_num != h->sei_recovery_frame_cnt || hx->slice_type_nos != AV_PICTURE_TYPE_I)) + h->valid_recovery_point = 1; + + if ( h->sei_recovery_frame_cnt >= 0 + && ( h->recovery_frame<0 + || ((h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1)) > h->sei_recovery_frame_cnt)) { + h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) % + (1 << h->sps.log2_max_frame_num); + + if (!h->valid_recovery_point) + h->recovery_frame = h->frame_num; + } + + h->cur_pic_ptr->f.key_frame |= + (hx->nal_unit_type == NAL_IDR_SLICE); + + if (h->recovery_frame == h->frame_num) { + h->cur_pic_ptr->sync |= 1; + h->recovery_frame = -1; + } + + h->sync |= !!h->cur_pic_ptr->f.key_frame; + h->sync |= 3*!!(avctx->flags2 & CODEC_FLAG2_SHOW_ALL); + h->cur_pic_ptr->sync |= h->sync; + + if (h->current_slice == 1) { + if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) + decode_postinit(h, nal_index >= nals_needed); + + if (h->avctx->hwaccel && + h->avctx->hwaccel->start_frame(h->avctx, NULL, 0) < 0) + return -1; + if (CONFIG_H264_VDPAU_DECODER && + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) + ff_vdpau_h264_picture_start(h); + } + + if (hx->redundant_pic_count == 0 && + (avctx->skip_frame < AVDISCARD_NONREF || + hx->nal_ref_idc) && + (avctx->skip_frame < AVDISCARD_BIDIR || + hx->slice_type_nos != AV_PICTURE_TYPE_B) && + (avctx->skip_frame < AVDISCARD_NONKEY || + hx->slice_type_nos == AV_PICTURE_TYPE_I) && + avctx->skip_frame < AVDISCARD_ALL) { + if (avctx->hwaccel) { + if (avctx->hwaccel->decode_slice(avctx, + &buf[buf_index - consumed], + consumed) < 0) + return -1; + } else if (CONFIG_H264_VDPAU_DECODER && + h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) { + static const uint8_t start_code[] = { + 0x00, 0x00, 0x01 }; + ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], start_code, + sizeof(start_code)); + ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0], &buf[buf_index - consumed], + consumed); + } else + context_count++; + } + break; + case NAL_DPA: + init_get_bits(&hx->gb, ptr, bit_length); + hx->intra_gb_ptr = + hx->inter_gb_ptr = NULL; + + if ((err = decode_slice_header(hx, h)) < 0) + break; + + hx->data_partitioning = 1; + break; + case NAL_DPB: + init_get_bits(&hx->intra_gb, ptr, bit_length); + hx->intra_gb_ptr = &hx->intra_gb; + break; + case NAL_DPC: + init_get_bits(&hx->inter_gb, ptr, bit_length); + hx->inter_gb_ptr = &hx->inter_gb; + + av_log(h->avctx, AV_LOG_ERROR, "Partitioned H.264 support is incomplete\n"); + break; + + if (hx->redundant_pic_count == 0 && + hx->intra_gb_ptr && + hx->data_partitioning && + h->cur_pic_ptr && h->context_initialized && + (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) && + (avctx->skip_frame < AVDISCARD_BIDIR || + hx->slice_type_nos != AV_PICTURE_TYPE_B) && + (avctx->skip_frame < AVDISCARD_NONKEY || + hx->slice_type_nos == AV_PICTURE_TYPE_I) && + avctx->skip_frame < AVDISCARD_ALL) + context_count++; + break; + case NAL_SEI: + init_get_bits(&h->gb, ptr, bit_length); + ff_h264_decode_sei(h); + break; + case NAL_SPS: + init_get_bits(&h->gb, ptr, bit_length); + if (ff_h264_decode_seq_parameter_set(h) < 0 && (h->is_avc ? (nalsize != consumed) && nalsize : 1)) { + av_log(h->avctx, AV_LOG_DEBUG, + "SPS decoding failure, trying again with the complete NAL\n"); + if (h->is_avc) + av_assert0(next_avc - buf_index + consumed == nalsize); + if ((next_avc - buf_index + consumed - 1) >= INT_MAX/8) + break; + init_get_bits(&h->gb, &buf[buf_index + 1 - consumed], + 8*(next_avc - buf_index + consumed - 1)); + ff_h264_decode_seq_parameter_set(h); + } + + break; + case NAL_PPS: + init_get_bits(&h->gb, ptr, bit_length); + ff_h264_decode_picture_parameter_set(h, bit_length); + break; + case NAL_AUD: + case NAL_END_SEQUENCE: + case NAL_END_STREAM: + case NAL_FILLER_DATA: + case NAL_SPS_EXT: + case NAL_AUXILIARY_SLICE: + break; + case NAL_FF_IGNORE: + break; + default: + av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n", + hx->nal_unit_type, bit_length); + } + + if (context_count == h->max_contexts) { + execute_decode_slices(h, context_count); + context_count = 0; + } + + if (err < 0) + av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n"); + else if (err == 1) { + /* Slice could not be decoded in parallel mode, copy down + * NAL unit stuff to context 0 and restart. Note that + * rbsp_buffer is not transferred, but since we no longer + * run in parallel mode this should not be an issue. */ + h->nal_unit_type = hx->nal_unit_type; + h->nal_ref_idc = hx->nal_ref_idc; + hx = h; + goto again; + } + } + } + if (context_count) + execute_decode_slices(h, context_count); + +end: + /* clean up */ + if (h->cur_pic_ptr && !h->droppable) { + ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, + h->picture_structure == PICT_BOTTOM_FIELD); + } + + return buf_index; +} + +/** + * Return the number of bytes consumed for building the current frame. + */ +static int get_consumed_bytes(int pos, int buf_size) +{ + if (pos == 0) + pos = 1; // avoid infinite loops (i doubt that is needed but ...) + if (pos + 10 > buf_size) + pos = buf_size; // oops ;) + + return pos; +} + +static int output_frame(H264Context *h, AVFrame *dst, AVFrame *src) +{ + int i; + int ret = av_frame_ref(dst, src); + if (ret < 0) + return ret; + + if (!h->sps.crop) + return 0; + + for (i = 0; i < 3; i++) { + int hshift = (i > 0) ? h->chroma_x_shift : 0; + int vshift = (i > 0) ? h->chroma_y_shift : 0; + int off = ((h->sps.crop_left >> hshift) << h->pixel_shift) + + (h->sps.crop_top >> vshift) * dst->linesize[i]; + dst->data[i] += off; + } + return 0; +} + +static int decode_frame(AVCodecContext *avctx, void *data, + int *got_frame, AVPacket *avpkt) +{ + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + H264Context *h = avctx->priv_data; + AVFrame *pict = data; + int buf_index = 0; + Picture *out; + int i, out_idx; + int ret; + + h->flags = avctx->flags; + + /* end of stream, output what is still in the buffers */ + if (buf_size == 0) { + out: + + h->cur_pic_ptr = NULL; + h->first_field = 0; + + // FIXME factorize this with the output code below + out = h->delayed_pic[0]; + out_idx = 0; + for (i = 1; + h->delayed_pic[i] && + !h->delayed_pic[i]->f.key_frame && + !h->delayed_pic[i]->mmco_reset; + i++) + if (h->delayed_pic[i]->poc < out->poc) { + out = h->delayed_pic[i]; + out_idx = i; + } + + for (i = out_idx; h->delayed_pic[i]; i++) + h->delayed_pic[i] = h->delayed_pic[i + 1]; + + if (out) { + out->reference &= ~DELAYED_PIC_REF; + ret = output_frame(h, pict, &out->f); + if (ret < 0) + return ret; + *got_frame = 1; + } + + return buf_index; + } + if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){ + int cnt= buf[5]&0x1f; + const uint8_t *p= buf+6; + while(cnt--){ + int nalsize= AV_RB16(p) + 2; + if(nalsize > buf_size - (p-buf) || p[2]!=0x67) + goto not_extra; + p += nalsize; + } + cnt = *(p++); + if(!cnt) + goto not_extra; + while(cnt--){ + int nalsize= AV_RB16(p) + 2; + if(nalsize > buf_size - (p-buf) || p[2]!=0x68) + goto not_extra; + p += nalsize; + } + + return ff_h264_decode_extradata(h, buf, buf_size); + } +not_extra: + + buf_index = decode_nal_units(h, buf, buf_size, 0); + if (buf_index < 0) + return -1; + + if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) { + av_assert0(buf_index <= buf_size); + goto out; + } + + if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) { + if (avctx->skip_frame >= AVDISCARD_NONREF || + buf_size >= 4 && !memcmp("Q264", buf, 4)) + return buf_size; + av_log(avctx, AV_LOG_ERROR, "no frame!\n"); + return -1; + } + + if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) || + (h->mb_y >= h->mb_height && h->mb_height)) { + if (avctx->flags2 & CODEC_FLAG2_CHUNKS) + decode_postinit(h, 1); + + field_end(h, 0); + + /* Wait for second field. */ + *got_frame = 0; + if (h->next_output_pic && (h->next_output_pic->sync || h->sync>1)) { + ret = output_frame(h, pict, &h->next_output_pic->f); + if (ret < 0) + return ret; + *got_frame = 1; + if (CONFIG_MPEGVIDEO) { + ff_print_debug_info2(h->avctx, h->next_output_pic, pict, h->er.mbskip_table, + &h->low_delay, + h->mb_width, h->mb_height, h->mb_stride, 1); + } + } + } + + assert(pict->data[0] || !*got_frame); + + return get_consumed_bytes(buf_index, buf_size); +} + +av_cold void ff_h264_free_context(H264Context *h) +{ + int i; + + free_tables(h, 1); // FIXME cleanup init stuff perhaps + + for (i = 0; i < MAX_SPS_COUNT; i++) + av_freep(h->sps_buffers + i); + + for (i = 0; i < MAX_PPS_COUNT; i++) + av_freep(h->pps_buffers + i); +} + +static av_cold int h264_decode_end(AVCodecContext *avctx) +{ + H264Context *h = avctx->priv_data; + + ff_h264_remove_all_refs(h); + ff_h264_free_context(h); + + unref_picture(h, &h->cur_pic); + + return 0; +} + +static const AVProfile profiles[] = { + { FF_PROFILE_H264_BASELINE, "Baseline" }, + { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" }, + { FF_PROFILE_H264_MAIN, "Main" }, + { FF_PROFILE_H264_EXTENDED, "Extended" }, + { FF_PROFILE_H264_HIGH, "High" }, + { FF_PROFILE_H264_HIGH_10, "High 10" }, + { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" }, + { FF_PROFILE_H264_HIGH_422, "High 4:2:2" }, + { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" }, + { FF_PROFILE_H264_HIGH_444, "High 4:4:4" }, + { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" }, + { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" }, + { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" }, + { FF_PROFILE_UNKNOWN }, +}; + +static const AVOption h264_options[] = { + {"is_avc", "is avc", offsetof(H264Context, is_avc), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0}, + {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0}, + {NULL} +}; + +static const AVClass h264_class = { + .class_name = "H264 Decoder", + .item_name = av_default_item_name, + .option = h264_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const AVClass h264_vdpau_class = { + .class_name = "H264 VDPAU Decoder", + .item_name = av_default_item_name, + .option = h264_options, + .version = LIBAVUTIL_VERSION_INT, +}; + +AVCodec ff_h264_decoder = { + .name = "h264", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_H264, + .priv_data_size = sizeof(H264Context), + .init = ff_h264_decode_init, + .close = h264_decode_end, + .decode = decode_frame, + .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 | + CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS | + CODEC_CAP_FRAME_THREADS, + .flush = flush_dpb, + .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"), + .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy), + .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context), + .profiles = NULL_IF_CONFIG_SMALL(profiles), + .priv_class = &h264_class, +}; + +#if CONFIG_H264_VDPAU_DECODER +AVCodec ff_h264_vdpau_decoder = { + .name = "h264_vdpau", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_H264, + .priv_data_size = sizeof(H264Context), + .init = ff_h264_decode_init, + .close = h264_decode_end, + .decode = decode_frame, + .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, + .flush = flush_dpb, + .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"), + .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264, + AV_PIX_FMT_NONE}, + .profiles = NULL_IF_CONFIG_SMALL(profiles), + .priv_class = &h264_vdpau_class, +}; +#endif