yading@10: /* yading@10: * H.263 decoder yading@10: * Copyright (c) 2001 Fabrice Bellard yading@10: * Copyright (c) 2002-2004 Michael Niedermayer yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: /** yading@10: * @file yading@10: * H.263 decoder. yading@10: */ yading@10: yading@10: #define UNCHECKED_BITSTREAM_READER 1 yading@10: yading@10: #include "libavutil/cpu.h" yading@10: #include "internal.h" yading@10: #include "avcodec.h" yading@10: #include "error_resilience.h" yading@10: #include "mpegvideo.h" yading@10: #include "h263.h" yading@10: #include "h263_parser.h" yading@10: #include "mpeg4video_parser.h" yading@10: #include "msmpeg4.h" yading@10: #include "vdpau_internal.h" yading@10: #include "thread.h" yading@10: #include "flv.h" yading@10: #include "mpeg4video.h" yading@10: yading@10: //#define DEBUG yading@10: //#define PRINT_FRAME_TIME yading@10: yading@10: av_cold int ff_h263_decode_init(AVCodecContext *avctx) yading@10: { yading@10: MpegEncContext *s = avctx->priv_data; yading@10: int ret; yading@10: yading@10: s->avctx = avctx; yading@10: s->out_format = FMT_H263; yading@10: yading@10: s->width = avctx->coded_width; yading@10: s->height = avctx->coded_height; yading@10: s->workaround_bugs= avctx->workaround_bugs; yading@10: yading@10: // set defaults yading@10: ff_MPV_decode_defaults(s); yading@10: s->quant_precision=5; yading@10: s->decode_mb= ff_h263_decode_mb; yading@10: s->low_delay= 1; yading@10: if (avctx->codec->id == AV_CODEC_ID_MSS2) yading@10: avctx->pix_fmt = AV_PIX_FMT_YUV420P; yading@10: else yading@10: avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts); yading@10: s->unrestricted_mv= 1; yading@10: yading@10: /* select sub codec */ yading@10: switch(avctx->codec->id) { yading@10: case AV_CODEC_ID_H263: yading@10: case AV_CODEC_ID_H263P: yading@10: s->unrestricted_mv= 0; yading@10: avctx->chroma_sample_location = AVCHROMA_LOC_CENTER; yading@10: break; yading@10: case AV_CODEC_ID_MPEG4: yading@10: break; yading@10: case AV_CODEC_ID_MSMPEG4V1: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=1; yading@10: break; yading@10: case AV_CODEC_ID_MSMPEG4V2: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=2; yading@10: break; yading@10: case AV_CODEC_ID_MSMPEG4V3: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=3; yading@10: break; yading@10: case AV_CODEC_ID_WMV1: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=4; yading@10: break; yading@10: case AV_CODEC_ID_WMV2: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=5; yading@10: break; yading@10: case AV_CODEC_ID_VC1: yading@10: case AV_CODEC_ID_WMV3: yading@10: case AV_CODEC_ID_VC1IMAGE: yading@10: case AV_CODEC_ID_WMV3IMAGE: yading@10: case AV_CODEC_ID_MSS2: yading@10: s->h263_pred = 1; yading@10: s->msmpeg4_version=6; yading@10: avctx->chroma_sample_location = AVCHROMA_LOC_LEFT; yading@10: break; yading@10: case AV_CODEC_ID_H263I: yading@10: break; yading@10: case AV_CODEC_ID_FLV1: yading@10: s->h263_flv = 1; yading@10: break; yading@10: default: yading@10: return AVERROR(EINVAL); yading@10: } yading@10: s->codec_id= avctx->codec->id; yading@10: avctx->hwaccel= ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt); yading@10: yading@10: /* for h263, we allocate the images after having read the header */ yading@10: if (avctx->codec->id != AV_CODEC_ID_H263 && avctx->codec->id != AV_CODEC_ID_H263P && avctx->codec->id != AV_CODEC_ID_MPEG4) yading@10: if ((ret = ff_MPV_common_init(s)) < 0) yading@10: return ret; yading@10: yading@10: ff_h263_decode_init_vlc(); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: av_cold int ff_h263_decode_end(AVCodecContext *avctx) yading@10: { yading@10: MpegEncContext *s = avctx->priv_data; yading@10: yading@10: ff_MPV_common_end(s); yading@10: return 0; yading@10: } yading@10: yading@10: /** yading@10: * Return the number of bytes consumed for building the current frame. yading@10: */ yading@10: static int get_consumed_bytes(MpegEncContext *s, int buf_size){ yading@10: int pos= (get_bits_count(&s->gb)+7)>>3; yading@10: yading@10: if(s->divx_packed || s->avctx->hwaccel){ yading@10: //we would have to scan through the whole buf to handle the weird reordering ... yading@10: return buf_size; yading@10: }else if(s->flags&CODEC_FLAG_TRUNCATED){ yading@10: pos -= s->parse_context.last_index; yading@10: if(pos<0) pos=0; // padding is not really read so this might be -1 yading@10: return pos; yading@10: }else{ yading@10: if(pos==0) pos=1; //avoid infinite loops (i doubt that is needed but ...) yading@10: if(pos+10>buf_size) pos=buf_size; // oops ;) yading@10: yading@10: return pos; yading@10: } yading@10: } yading@10: yading@10: static int decode_slice(MpegEncContext *s){ yading@10: const int part_mask= s->partitioned_frame ? (ER_AC_END|ER_AC_ERROR) : 0x7F; yading@10: const int mb_size= 16>>s->avctx->lowres; yading@10: int ret; yading@10: yading@10: s->last_resync_gb= s->gb; yading@10: s->first_slice_line= 1; yading@10: yading@10: s->resync_mb_x= s->mb_x; yading@10: s->resync_mb_y= s->mb_y; yading@10: yading@10: ff_set_qscale(s, s->qscale); yading@10: yading@10: if (s->avctx->hwaccel) { yading@10: const uint8_t *start= s->gb.buffer + get_bits_count(&s->gb)/8; yading@10: const uint8_t *end = ff_h263_find_resync_marker(s, start + 1, s->gb.buffer_end); yading@10: skip_bits_long(&s->gb, 8*(end - start)); yading@10: return s->avctx->hwaccel->decode_slice(s->avctx, start, end - start); yading@10: } yading@10: yading@10: if(s->partitioned_frame){ yading@10: const int qscale= s->qscale; yading@10: yading@10: if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4){ yading@10: if ((ret = ff_mpeg4_decode_partitions(s)) < 0) yading@10: return ret; yading@10: } yading@10: yading@10: /* restore variables which were modified */ yading@10: s->first_slice_line=1; yading@10: s->mb_x= s->resync_mb_x; yading@10: s->mb_y= s->resync_mb_y; yading@10: ff_set_qscale(s, qscale); yading@10: } yading@10: yading@10: for(; s->mb_y < s->mb_height; s->mb_y++) { yading@10: /* per-row end of slice checks */ yading@10: if(s->msmpeg4_version){ yading@10: if(s->resync_mb_y + s->slice_height == s->mb_y){ yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END); yading@10: yading@10: return 0; yading@10: } yading@10: } yading@10: yading@10: if(s->msmpeg4_version==1){ yading@10: s->last_dc[0]= yading@10: s->last_dc[1]= yading@10: s->last_dc[2]= 128; yading@10: } yading@10: yading@10: ff_init_block_index(s); yading@10: for(; s->mb_x < s->mb_width; s->mb_x++) { yading@10: int ret; yading@10: yading@10: ff_update_block_index(s); yading@10: yading@10: if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){ yading@10: s->first_slice_line=0; yading@10: } yading@10: yading@10: /* DCT & quantize */ yading@10: yading@10: s->mv_dir = MV_DIR_FORWARD; yading@10: s->mv_type = MV_TYPE_16X16; yading@10: // s->mb_skipped = 0; yading@10: av_dlog(s, "%d %d %06X\n", yading@10: ret, get_bits_count(&s->gb), show_bits(&s->gb, 24)); yading@10: ret= s->decode_mb(s, s->block); yading@10: yading@10: if (s->pict_type!=AV_PICTURE_TYPE_B) yading@10: ff_h263_update_motion_val(s); yading@10: yading@10: if(ret<0){ yading@10: const int xy= s->mb_x + s->mb_y*s->mb_stride; yading@10: if(ret==SLICE_END){ yading@10: ff_MPV_decode_mb(s, s->block); yading@10: if(s->loop_filter) yading@10: ff_h263_loop_filter(s); yading@10: yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_MB_END&part_mask); yading@10: yading@10: s->padding_bug_score--; yading@10: yading@10: if(++s->mb_x >= s->mb_width){ yading@10: s->mb_x=0; yading@10: ff_mpeg_draw_horiz_band(s, s->mb_y*mb_size, mb_size); yading@10: ff_MPV_report_decode_progress(s); yading@10: s->mb_y++; yading@10: } yading@10: return 0; yading@10: }else if(ret==SLICE_NOEND){ yading@10: av_log(s->avctx, AV_LOG_ERROR, "Slice mismatch at MB: %d\n", xy); yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x+1, s->mb_y, ER_MB_END&part_mask); yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: av_log(s->avctx, AV_LOG_ERROR, "Error at MB: %d\n", xy); yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_MB_ERROR&part_mask); yading@10: yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: yading@10: ff_MPV_decode_mb(s, s->block); yading@10: if(s->loop_filter) yading@10: ff_h263_loop_filter(s); yading@10: } yading@10: yading@10: ff_mpeg_draw_horiz_band(s, s->mb_y*mb_size, mb_size); yading@10: ff_MPV_report_decode_progress(s); yading@10: yading@10: s->mb_x= 0; yading@10: } yading@10: yading@10: av_assert1(s->mb_x==0 && s->mb_y==s->mb_height); yading@10: yading@10: if(s->codec_id==AV_CODEC_ID_MPEG4 yading@10: && (s->workaround_bugs&FF_BUG_AUTODETECT) yading@10: && get_bits_left(&s->gb) >= 48 yading@10: && show_bits(&s->gb, 24)==0x4010 yading@10: && !s->data_partitioning) yading@10: s->padding_bug_score+=32; yading@10: yading@10: /* try to detect the padding bug */ yading@10: if( s->codec_id==AV_CODEC_ID_MPEG4 yading@10: && (s->workaround_bugs&FF_BUG_AUTODETECT) yading@10: && get_bits_left(&s->gb) >=0 yading@10: && get_bits_left(&s->gb) < 137 yading@10: // && !s->resync_marker yading@10: && !s->data_partitioning){ yading@10: yading@10: const int bits_count= get_bits_count(&s->gb); yading@10: const int bits_left = s->gb.size_in_bits - bits_count; yading@10: yading@10: if(bits_left==0){ yading@10: s->padding_bug_score+=16; yading@10: } else if(bits_left != 1){ yading@10: int v= show_bits(&s->gb, 8); yading@10: v|= 0x7F >> (7-(bits_count&7)); yading@10: yading@10: if(v==0x7F && bits_left<=8) yading@10: s->padding_bug_score--; yading@10: else if(v==0x7F && ((get_bits_count(&s->gb)+8)&8) && bits_left<=16) yading@10: s->padding_bug_score+= 4; yading@10: else yading@10: s->padding_bug_score++; yading@10: } yading@10: } yading@10: yading@10: if(s->workaround_bugs&FF_BUG_AUTODETECT){ yading@10: if(s->padding_bug_score > -2 && !s->data_partitioning /*&& (s->divx_version>=0 || !s->resync_marker)*/) yading@10: s->workaround_bugs |= FF_BUG_NO_PADDING; yading@10: else yading@10: s->workaround_bugs &= ~FF_BUG_NO_PADDING; yading@10: } yading@10: yading@10: // handle formats which don't have unique end markers yading@10: if(s->msmpeg4_version || (s->workaround_bugs&FF_BUG_NO_PADDING)){ //FIXME perhaps solve this more cleanly yading@10: int left= get_bits_left(&s->gb); yading@10: int max_extra=7; yading@10: yading@10: /* no markers in M$ crap */ yading@10: if(s->msmpeg4_version && s->pict_type==AV_PICTURE_TYPE_I) yading@10: max_extra+= 17; yading@10: yading@10: /* buggy padding but the frame should still end approximately at the bitstream end */ yading@10: if((s->workaround_bugs&FF_BUG_NO_PADDING) && (s->err_recognition&(AV_EF_BUFFER|AV_EF_AGGRESSIVE))) yading@10: max_extra+= 48; yading@10: else if((s->workaround_bugs&FF_BUG_NO_PADDING)) yading@10: max_extra+= 256*256*256*64; yading@10: yading@10: if(left>max_extra){ yading@10: av_log(s->avctx, AV_LOG_ERROR, "discarding %d junk bits at end, next would be %X\n", left, show_bits(&s->gb, 24)); yading@10: } yading@10: else if(left<0){ yading@10: av_log(s->avctx, AV_LOG_ERROR, "overreading %d bits\n", -left); yading@10: }else yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x-1, s->mb_y, ER_MB_END); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: av_log(s->avctx, AV_LOG_ERROR, "slice end not reached but screenspace end (%d left %06X, score= %d)\n", yading@10: get_bits_left(&s->gb), yading@10: show_bits(&s->gb, 24), s->padding_bug_score); yading@10: yading@10: ff_er_add_slice(&s->er, s->resync_mb_x, s->resync_mb_y, s->mb_x, s->mb_y, ER_MB_END&part_mask); yading@10: yading@10: return AVERROR_INVALIDDATA; yading@10: } yading@10: yading@10: int ff_h263_decode_frame(AVCodecContext *avctx, yading@10: void *data, int *got_frame, yading@10: AVPacket *avpkt) yading@10: { yading@10: const uint8_t *buf = avpkt->data; yading@10: int buf_size = avpkt->size; yading@10: MpegEncContext *s = avctx->priv_data; yading@10: int ret; yading@10: AVFrame *pict = data; yading@10: yading@10: #ifdef PRINT_FRAME_TIME yading@10: uint64_t time= rdtsc(); yading@10: #endif yading@10: s->flags= avctx->flags; yading@10: s->flags2= avctx->flags2; yading@10: yading@10: /* no supplementary picture */ yading@10: if (buf_size == 0) { yading@10: /* special case for last picture */ yading@10: if (s->low_delay==0 && s->next_picture_ptr) { yading@10: if ((ret = av_frame_ref(pict, &s->next_picture_ptr->f)) < 0) yading@10: return ret; yading@10: s->next_picture_ptr= NULL; yading@10: yading@10: *got_frame = 1; yading@10: } yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: if(s->flags&CODEC_FLAG_TRUNCATED){ yading@10: int next; yading@10: yading@10: if(CONFIG_MPEG4_DECODER && s->codec_id==AV_CODEC_ID_MPEG4){ yading@10: next= ff_mpeg4_find_frame_end(&s->parse_context, buf, buf_size); yading@10: }else if(CONFIG_H263_DECODER && s->codec_id==AV_CODEC_ID_H263){ yading@10: next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size); yading@10: }else if(CONFIG_H263P_DECODER && s->codec_id==AV_CODEC_ID_H263P){ yading@10: next= ff_h263_find_frame_end(&s->parse_context, buf, buf_size); yading@10: }else{ yading@10: av_log(s->avctx, AV_LOG_ERROR, "this codec does not support truncated bitstreams\n"); yading@10: return AVERROR(EINVAL); yading@10: } yading@10: yading@10: if( ff_combine_frame(&s->parse_context, next, (const uint8_t **)&buf, &buf_size) < 0 ) yading@10: return buf_size; yading@10: } yading@10: yading@10: yading@10: retry: yading@10: if(s->divx_packed && s->bitstream_buffer_size){ yading@10: int i; yading@10: for(i=0; iavctx, AV_LOG_WARNING, "Discarding excessive bitstream in packed xvid\n"); yading@10: s->bitstream_buffer_size=0; yading@10: } yading@10: break; yading@10: } yading@10: } yading@10: } yading@10: yading@10: if(s->bitstream_buffer_size && (s->divx_packed || buf_size<20)){ //divx 5.01+/xvid frame reorder yading@10: init_get_bits(&s->gb, s->bitstream_buffer, s->bitstream_buffer_size*8); yading@10: }else yading@10: init_get_bits(&s->gb, buf, buf_size*8); yading@10: s->bitstream_buffer_size=0; yading@10: yading@10: if (!s->context_initialized) { yading@10: if ((ret = ff_MPV_common_init(s)) < 0) //we need the idct permutaton for reading a custom matrix yading@10: return ret; yading@10: } yading@10: yading@10: /* We need to set current_picture_ptr before reading the header, yading@10: * otherwise we cannot store anyting in there */ yading@10: if (s->current_picture_ptr == NULL || s->current_picture_ptr->f.data[0]) { yading@10: int i= ff_find_unused_picture(s, 0); yading@10: if (i < 0) yading@10: return i; yading@10: s->current_picture_ptr= &s->picture[i]; yading@10: } yading@10: yading@10: /* let's go :-) */ yading@10: if (CONFIG_WMV2_DECODER && s->msmpeg4_version==5) { yading@10: ret= ff_wmv2_decode_picture_header(s); yading@10: } else if (CONFIG_MSMPEG4_DECODER && s->msmpeg4_version) { yading@10: ret = ff_msmpeg4_decode_picture_header(s); yading@10: } else if (CONFIG_MPEG4_DECODER && s->h263_pred) { yading@10: if(s->avctx->extradata_size && s->picture_number==0){ yading@10: GetBitContext gb; yading@10: yading@10: init_get_bits(&gb, s->avctx->extradata, s->avctx->extradata_size*8); yading@10: ret = ff_mpeg4_decode_picture_header(s, &gb); yading@10: } yading@10: ret = ff_mpeg4_decode_picture_header(s, &s->gb); yading@10: } else if (CONFIG_H263I_DECODER && s->codec_id == AV_CODEC_ID_H263I) { yading@10: ret = ff_intel_h263_decode_picture_header(s); yading@10: } else if (CONFIG_FLV_DECODER && s->h263_flv) { yading@10: ret = ff_flv_decode_picture_header(s); yading@10: } else { yading@10: ret = ff_h263_decode_picture_header(s); yading@10: } yading@10: yading@10: if (ret < 0 || ret==FRAME_SKIPPED) { yading@10: if ( s->width != avctx->coded_width yading@10: || s->height != avctx->coded_height) { yading@10: av_log(s->avctx, AV_LOG_WARNING, "Reverting picture dimensions change due to header decoding failure\n"); yading@10: s->width = avctx->coded_width; yading@10: s->height= avctx->coded_height; yading@10: } yading@10: } yading@10: if(ret==FRAME_SKIPPED) return get_consumed_bytes(s, buf_size); yading@10: yading@10: /* skip if the header was thrashed */ yading@10: if (ret < 0){ yading@10: av_log(s->avctx, AV_LOG_ERROR, "header damaged\n"); yading@10: return ret; yading@10: } yading@10: yading@10: avctx->has_b_frames= !s->low_delay; yading@10: yading@10: if(s->xvid_build==-1 && s->divx_version==-1 && s->lavc_build==-1){ yading@10: if(s->stream_codec_tag == AV_RL32("XVID") || yading@10: s->codec_tag == AV_RL32("XVID") || s->codec_tag == AV_RL32("XVIX") || yading@10: s->codec_tag == AV_RL32("RMP4") || s->codec_tag == AV_RL32("ZMP4") || yading@10: s->codec_tag == AV_RL32("SIPP") yading@10: ) yading@10: s->xvid_build= 0; yading@10: #if 0 yading@10: if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==1 yading@10: && s->padding_bug_score > 0 && s->low_delay) // XVID with modified fourcc yading@10: s->xvid_build= 0; yading@10: #endif yading@10: } yading@10: yading@10: if(s->xvid_build==-1 && s->divx_version==-1 && s->lavc_build==-1){ yading@10: if(s->codec_tag == AV_RL32("DIVX") && s->vo_type==0 && s->vol_control_parameters==0) yading@10: s->divx_version= 400; //divx 4 yading@10: } yading@10: yading@10: if(s->xvid_build>=0 && s->divx_version>=0){ yading@10: s->divx_version= yading@10: s->divx_build= -1; yading@10: } yading@10: yading@10: if(s->workaround_bugs&FF_BUG_AUTODETECT){ yading@10: if(s->codec_tag == AV_RL32("XVIX")) yading@10: s->workaround_bugs|= FF_BUG_XVID_ILACE; yading@10: yading@10: if(s->codec_tag == AV_RL32("UMP4")){ yading@10: s->workaround_bugs|= FF_BUG_UMP4; yading@10: } yading@10: yading@10: if(s->divx_version>=500 && s->divx_build<1814){ yading@10: s->workaround_bugs|= FF_BUG_QPEL_CHROMA; yading@10: } yading@10: yading@10: if(s->divx_version>502 && s->divx_build<1814){ yading@10: s->workaround_bugs|= FF_BUG_QPEL_CHROMA2; yading@10: } yading@10: yading@10: if(s->xvid_build<=3U) yading@10: s->padding_bug_score= 256*256*256*64; yading@10: yading@10: if(s->xvid_build<=1U) yading@10: s->workaround_bugs|= FF_BUG_QPEL_CHROMA; yading@10: yading@10: if(s->xvid_build<=12U) yading@10: s->workaround_bugs|= FF_BUG_EDGE; yading@10: yading@10: if(s->xvid_build<=32U) yading@10: s->workaround_bugs|= FF_BUG_DC_CLIP; yading@10: yading@10: #define SET_QPEL_FUNC(postfix1, postfix2) \ yading@10: s->dsp.put_ ## postfix1 = ff_put_ ## postfix2;\ yading@10: s->dsp.put_no_rnd_ ## postfix1 = ff_put_no_rnd_ ## postfix2;\ yading@10: s->dsp.avg_ ## postfix1 = ff_avg_ ## postfix2; yading@10: yading@10: if(s->lavc_build<4653U) yading@10: s->workaround_bugs|= FF_BUG_STD_QPEL; yading@10: yading@10: if(s->lavc_build<4655U) yading@10: s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE; yading@10: yading@10: if(s->lavc_build<4670U){ yading@10: s->workaround_bugs|= FF_BUG_EDGE; yading@10: } yading@10: yading@10: if(s->lavc_build<=4712U) yading@10: s->workaround_bugs|= FF_BUG_DC_CLIP; yading@10: yading@10: if(s->divx_version>=0) yading@10: s->workaround_bugs|= FF_BUG_DIRECT_BLOCKSIZE; yading@10: if(s->divx_version==501 && s->divx_build==20020416) yading@10: s->padding_bug_score= 256*256*256*64; yading@10: yading@10: if(s->divx_version<500U){ yading@10: s->workaround_bugs|= FF_BUG_EDGE; yading@10: } yading@10: yading@10: if(s->divx_version>=0) yading@10: s->workaround_bugs|= FF_BUG_HPEL_CHROMA; yading@10: #if 0 yading@10: if(s->divx_version==500) yading@10: s->padding_bug_score= 256*256*256*64; yading@10: yading@10: /* very ugly XVID padding bug detection FIXME/XXX solve this differently yading@10: * Let us hope this at least works. yading@10: */ yading@10: if( s->resync_marker==0 && s->data_partitioning==0 && s->divx_version==-1 yading@10: && s->codec_id==AV_CODEC_ID_MPEG4 && s->vo_type==0) yading@10: s->workaround_bugs|= FF_BUG_NO_PADDING; yading@10: yading@10: if(s->lavc_build<4609U) //FIXME not sure about the version num but a 4609 file seems ok yading@10: s->workaround_bugs|= FF_BUG_NO_PADDING; yading@10: #endif yading@10: } yading@10: yading@10: if(s->workaround_bugs& FF_BUG_STD_QPEL){ yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][ 5], qpel16_mc11_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][ 7], qpel16_mc31_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][ 9], qpel16_mc12_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][11], qpel16_mc32_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][13], qpel16_mc13_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[0][15], qpel16_mc33_old_c) yading@10: yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][ 5], qpel8_mc11_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][ 7], qpel8_mc31_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][ 9], qpel8_mc12_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][11], qpel8_mc32_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][13], qpel8_mc13_old_c) yading@10: SET_QPEL_FUNC(qpel_pixels_tab[1][15], qpel8_mc33_old_c) yading@10: } yading@10: yading@10: if(avctx->debug & FF_DEBUG_BUGS) yading@10: av_log(s->avctx, AV_LOG_DEBUG, "bugs: %X lavc_build:%d xvid_build:%d divx_version:%d divx_build:%d %s\n", yading@10: s->workaround_bugs, s->lavc_build, s->xvid_build, s->divx_version, s->divx_build, yading@10: s->divx_packed ? "p" : ""); yading@10: yading@10: #if HAVE_MMX yading@10: if (s->codec_id == AV_CODEC_ID_MPEG4 && s->xvid_build>=0 && avctx->idct_algo == FF_IDCT_AUTO && (av_get_cpu_flags() & AV_CPU_FLAG_MMX)) { yading@10: avctx->idct_algo= FF_IDCT_XVIDMMX; yading@10: ff_dct_common_init(s); yading@10: goto retry; yading@10: } yading@10: #endif yading@10: yading@10: /* After H263 & mpeg4 header decode we have the height, width,*/ yading@10: /* and other parameters. So then we could init the picture */ yading@10: /* FIXME: By the way H263 decoder is evolving it should have */ yading@10: /* an H263EncContext */ yading@10: yading@10: if ((!avctx->coded_width || !avctx->coded_height) && 0) { yading@10: ParseContext pc= s->parse_context; //FIXME move these demuxng hack to avformat yading@10: yading@10: s->parse_context.buffer=0; yading@10: ff_MPV_common_end(s); yading@10: s->parse_context= pc; yading@10: avcodec_set_dimensions(avctx, s->width, s->height); yading@10: yading@10: goto retry; yading@10: } yading@10: yading@10: if (s->width != avctx->coded_width || yading@10: s->height != avctx->coded_height || yading@10: s->context_reinit) { yading@10: /* H.263 could change picture size any time */ yading@10: s->context_reinit = 0; yading@10: yading@10: avcodec_set_dimensions(avctx, s->width, s->height); yading@10: yading@10: if ((ret = ff_MPV_common_frame_size_change(s))) yading@10: return ret; yading@10: } yading@10: yading@10: if((s->codec_id==AV_CODEC_ID_H263 || s->codec_id==AV_CODEC_ID_H263P || s->codec_id == AV_CODEC_ID_H263I)) yading@10: s->gob_index = ff_h263_get_gob_height(s); yading@10: yading@10: // for skipping the frame yading@10: s->current_picture.f.pict_type = s->pict_type; yading@10: s->current_picture.f.key_frame = s->pict_type == AV_PICTURE_TYPE_I; yading@10: yading@10: /* skip B-frames if we don't have reference frames */ yading@10: if (s->last_picture_ptr == NULL && yading@10: (s->pict_type == AV_PICTURE_TYPE_B || s->droppable)) yading@10: return get_consumed_bytes(s, buf_size); yading@10: if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==AV_PICTURE_TYPE_B) yading@10: || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=AV_PICTURE_TYPE_I) yading@10: || avctx->skip_frame >= AVDISCARD_ALL) yading@10: return get_consumed_bytes(s, buf_size); yading@10: yading@10: if(s->next_p_frame_damaged){ yading@10: if(s->pict_type==AV_PICTURE_TYPE_B) yading@10: return get_consumed_bytes(s, buf_size); yading@10: else yading@10: s->next_p_frame_damaged=0; yading@10: } yading@10: yading@10: if((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){ yading@10: s->me.qpel_put= s->dsp.put_qpel_pixels_tab; yading@10: s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; yading@10: }else{ yading@10: s->me.qpel_put= s->dsp.put_no_rnd_qpel_pixels_tab; yading@10: s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; yading@10: } yading@10: yading@10: if ((ret = ff_MPV_frame_start(s, avctx)) < 0) yading@10: return ret; yading@10: yading@10: if (!s->divx_packed && !avctx->hwaccel) yading@10: ff_thread_finish_setup(avctx); yading@10: yading@10: if (CONFIG_MPEG4_VDPAU_DECODER && (s->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)) { yading@10: ff_vdpau_mpeg4_decode_picture(s, s->gb.buffer, s->gb.buffer_end - s->gb.buffer); yading@10: goto frame_end; yading@10: } yading@10: yading@10: if (avctx->hwaccel) { yading@10: if ((ret = avctx->hwaccel->start_frame(avctx, s->gb.buffer, s->gb.buffer_end - s->gb.buffer)) < 0) yading@10: return ret; yading@10: } yading@10: yading@10: ff_mpeg_er_frame_start(s); yading@10: yading@10: //the second part of the wmv2 header contains the MB skip bits which are stored in current_picture->mb_type yading@10: //which is not available before ff_MPV_frame_start() yading@10: if (CONFIG_WMV2_DECODER && s->msmpeg4_version==5){ yading@10: ret = ff_wmv2_decode_secondary_picture_header(s); yading@10: if(ret<0) return ret; yading@10: if(ret==1) goto intrax8_decoded; yading@10: } yading@10: yading@10: /* decode each macroblock */ yading@10: s->mb_x=0; yading@10: s->mb_y=0; yading@10: yading@10: ret = decode_slice(s); yading@10: while(s->mb_ymb_height){ yading@10: if(s->msmpeg4_version){ yading@10: if(s->slice_height==0 || s->mb_x!=0 || (s->mb_y%s->slice_height)!=0 || get_bits_left(&s->gb)<0) yading@10: break; yading@10: }else{ yading@10: int prev_x=s->mb_x, prev_y=s->mb_y; yading@10: if(ff_h263_resync(s)<0) yading@10: break; yading@10: if (prev_y * s->mb_width + prev_x < s->mb_y * s->mb_width + s->mb_x) yading@10: s->er.error_occurred = 1; yading@10: } yading@10: yading@10: if(s->msmpeg4_version<4 && s->h263_pred) yading@10: ff_mpeg4_clean_buffers(s); yading@10: yading@10: if (decode_slice(s) < 0) ret = AVERROR_INVALIDDATA; yading@10: } yading@10: yading@10: if (s->msmpeg4_version && s->msmpeg4_version<4 && s->pict_type==AV_PICTURE_TYPE_I) yading@10: if(!CONFIG_MSMPEG4_DECODER || ff_msmpeg4_decode_ext_header(s, buf_size) < 0){ yading@10: s->er.error_status_table[s->mb_num - 1] = ER_MB_ERROR; yading@10: } yading@10: yading@10: av_assert1(s->bitstream_buffer_size==0); yading@10: frame_end: yading@10: /* divx 5.01+ bitstream reorder stuff */ yading@10: if(s->codec_id==AV_CODEC_ID_MPEG4 && s->divx_packed){ yading@10: int current_pos= s->gb.buffer == s->bitstream_buffer ? 0 : (get_bits_count(&s->gb)>>3); yading@10: int startcode_found=0; yading@10: yading@10: if(buf_size - current_pos > 7){ yading@10: int i; yading@10: for(i=current_pos; ibitstream_buffer, yading@10: &s->allocated_bitstream_buffer_size, yading@10: buf_size - current_pos + FF_INPUT_BUFFER_PADDING_SIZE); yading@10: if (!s->bitstream_buffer) yading@10: return AVERROR(ENOMEM); yading@10: memcpy(s->bitstream_buffer, buf + current_pos, buf_size - current_pos); yading@10: s->bitstream_buffer_size= buf_size - current_pos; yading@10: } yading@10: } yading@10: yading@10: intrax8_decoded: yading@10: ff_er_frame_end(&s->er); yading@10: yading@10: if (avctx->hwaccel) { yading@10: if ((ret = avctx->hwaccel->end_frame(avctx)) < 0) yading@10: return ret; yading@10: } yading@10: yading@10: ff_MPV_frame_end(s); yading@10: yading@10: if (!s->divx_packed && avctx->hwaccel) yading@10: ff_thread_finish_setup(avctx); yading@10: yading@10: av_assert1(s->current_picture.f.pict_type == s->current_picture_ptr->f.pict_type); yading@10: av_assert1(s->current_picture.f.pict_type == s->pict_type); yading@10: if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { yading@10: if ((ret = av_frame_ref(pict, &s->current_picture_ptr->f)) < 0) yading@10: return ret; yading@10: ff_print_debug_info(s, s->current_picture_ptr, pict); yading@10: ff_mpv_export_qp_table(s, pict, s->current_picture_ptr, FF_QSCALE_TYPE_MPEG1); yading@10: } else if (s->last_picture_ptr != NULL) { yading@10: if ((ret = av_frame_ref(pict, &s->last_picture_ptr->f)) < 0) yading@10: return ret; yading@10: ff_print_debug_info(s, s->last_picture_ptr, pict); yading@10: ff_mpv_export_qp_table(s, pict, s->last_picture_ptr, FF_QSCALE_TYPE_MPEG1); yading@10: } yading@10: yading@10: if(s->last_picture_ptr || s->low_delay){ yading@10: *got_frame = 1; yading@10: } yading@10: yading@10: #ifdef PRINT_FRAME_TIME yading@10: av_log(avctx, AV_LOG_DEBUG, "%"PRId64"\n", rdtsc()-time); yading@10: #endif yading@10: yading@10: return (ret && (avctx->err_recognition & AV_EF_EXPLODE))?ret:get_consumed_bytes(s, buf_size); yading@10: } yading@10: yading@10: const enum AVPixelFormat ff_h263_hwaccel_pixfmt_list_420[] = { yading@10: #if CONFIG_VAAPI yading@10: AV_PIX_FMT_VAAPI_VLD, yading@10: #endif yading@10: #if CONFIG_VDPAU yading@10: AV_PIX_FMT_VDPAU, yading@10: #endif yading@10: AV_PIX_FMT_YUV420P, yading@10: AV_PIX_FMT_NONE yading@10: }; yading@10: yading@10: AVCodec ff_h263_decoder = { yading@10: .name = "h263", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_H263, yading@10: .priv_data_size = sizeof(MpegEncContext), yading@10: .init = ff_h263_decode_init, yading@10: .close = ff_h263_decode_end, yading@10: .decode = ff_h263_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | yading@10: CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY, yading@10: .flush = ff_mpeg_flush, yading@10: .max_lowres = 3, yading@10: .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"), yading@10: .pix_fmts = ff_h263_hwaccel_pixfmt_list_420, yading@10: }; yading@10: yading@10: AVCodec ff_h263p_decoder = { yading@10: .name = "h263p", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_H263P, yading@10: .priv_data_size = sizeof(MpegEncContext), yading@10: .init = ff_h263_decode_init, yading@10: .close = ff_h263_decode_end, yading@10: .decode = ff_h263_decode_frame, yading@10: .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1 | yading@10: CODEC_CAP_TRUNCATED | CODEC_CAP_DELAY, yading@10: .flush = ff_mpeg_flush, yading@10: .max_lowres = 3, yading@10: .long_name = NULL_IF_CONFIG_SMALL("H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2"), yading@10: .pix_fmts = ff_h263_hwaccel_pixfmt_list_420, yading@10: };