yading@10: /* yading@10: * AVS encoding using the xavs library yading@10: * Copyright (C) 2010 Amanda, Y.N. Wu 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: #include yading@10: #include yading@10: #include yading@10: #include yading@10: #include yading@10: #include yading@10: #include yading@10: #include "avcodec.h" yading@10: #include "internal.h" yading@10: #include "libavutil/internal.h" yading@10: #include "libavutil/mem.h" yading@10: #include "libavutil/opt.h" yading@10: yading@10: #define END_OF_STREAM 0x001 yading@10: yading@10: #define XAVS_PART_I8X8 0x002 /* Analyze i8x8 (requires 8x8 transform) */ yading@10: #define XAVS_PART_P8X8 0x010 /* Analyze p16x8, p8x16 and p8x8 */ yading@10: #define XAVS_PART_B8X8 0x100 /* Analyze b16x8, b*/ yading@10: yading@10: typedef struct XavsContext { yading@10: AVClass *class; yading@10: xavs_param_t params; yading@10: xavs_t *enc; yading@10: xavs_picture_t pic; yading@10: uint8_t *sei; yading@10: int sei_size; yading@10: AVFrame out_pic; yading@10: int end_of_stream; yading@10: float crf; yading@10: int cqp; yading@10: int b_bias; yading@10: float cplxblur; yading@10: int direct_pred; yading@10: int aud; yading@10: int fast_pskip; yading@10: int mbtree; yading@10: int mixed_refs; yading@10: yading@10: int64_t *pts_buffer; yading@10: int out_frame_count; yading@10: } XavsContext; yading@10: yading@10: static void XAVS_log(void *p, int level, const char *fmt, va_list args) yading@10: { yading@10: static const int level_map[] = { yading@10: [XAVS_LOG_ERROR] = AV_LOG_ERROR, yading@10: [XAVS_LOG_WARNING] = AV_LOG_WARNING, yading@10: [XAVS_LOG_INFO] = AV_LOG_INFO, yading@10: [XAVS_LOG_DEBUG] = AV_LOG_DEBUG yading@10: }; yading@10: yading@10: if (level < 0 || level > XAVS_LOG_DEBUG) yading@10: return; yading@10: yading@10: av_vlog(p, level_map[level], fmt, args); yading@10: } yading@10: yading@10: static int encode_nals(AVCodecContext *ctx, AVPacket *pkt, yading@10: xavs_nal_t *nals, int nnal) yading@10: { yading@10: XavsContext *x4 = ctx->priv_data; yading@10: uint8_t *p; yading@10: int i, s, ret, size = x4->sei_size + FF_MIN_BUFFER_SIZE; yading@10: yading@10: if (!nnal) yading@10: return 0; yading@10: yading@10: for (i = 0; i < nnal; i++) yading@10: size += nals[i].i_payload; yading@10: yading@10: if ((ret = ff_alloc_packet2(ctx, pkt, size)) < 0) yading@10: return ret; yading@10: p = pkt->data; yading@10: yading@10: /* Write the SEI as part of the first frame. */ yading@10: if (x4->sei_size > 0 && nnal > 0) { yading@10: memcpy(p, x4->sei, x4->sei_size); yading@10: p += x4->sei_size; yading@10: x4->sei_size = 0; yading@10: } yading@10: yading@10: for (i = 0; i < nnal; i++) { yading@10: s = xavs_nal_encode(p, &size, 1, nals + i); yading@10: if (s < 0) yading@10: return -1; yading@10: p += s; yading@10: } yading@10: pkt->size = p - pkt->data; yading@10: yading@10: return 1; yading@10: } yading@10: yading@10: static int XAVS_frame(AVCodecContext *ctx, AVPacket *pkt, yading@10: const AVFrame *frame, int *got_packet) yading@10: { yading@10: XavsContext *x4 = ctx->priv_data; yading@10: xavs_nal_t *nal; yading@10: int nnal, i, ret; yading@10: xavs_picture_t pic_out; yading@10: yading@10: x4->pic.img.i_csp = XAVS_CSP_I420; yading@10: x4->pic.img.i_plane = 3; yading@10: yading@10: if (frame) { yading@10: for (i = 0; i < 3; i++) { yading@10: x4->pic.img.plane[i] = frame->data[i]; yading@10: x4->pic.img.i_stride[i] = frame->linesize[i]; yading@10: } yading@10: yading@10: x4->pic.i_pts = frame->pts; yading@10: x4->pic.i_type = XAVS_TYPE_AUTO; yading@10: x4->pts_buffer[ctx->frame_number % (ctx->max_b_frames+1)] = frame->pts; yading@10: } yading@10: yading@10: if (xavs_encoder_encode(x4->enc, &nal, &nnal, yading@10: frame? &x4->pic: NULL, &pic_out) < 0) yading@10: return -1; yading@10: yading@10: ret = encode_nals(ctx, pkt, nal, nnal); yading@10: yading@10: if (ret < 0) yading@10: return -1; yading@10: yading@10: if (!ret) { yading@10: if (!frame && !(x4->end_of_stream)) { yading@10: if ((ret = ff_alloc_packet2(ctx, pkt, 4)) < 0) yading@10: return ret; yading@10: yading@10: pkt->data[0] = 0x0; yading@10: pkt->data[1] = 0x0; yading@10: pkt->data[2] = 0x01; yading@10: pkt->data[3] = 0xb1; yading@10: pkt->dts = 2*x4->pts_buffer[(x4->out_frame_count-1)%(ctx->max_b_frames+1)] - yading@10: x4->pts_buffer[(x4->out_frame_count-2)%(ctx->max_b_frames+1)]; yading@10: x4->end_of_stream = END_OF_STREAM; yading@10: *got_packet = 1; yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: x4->out_pic.pts = pic_out.i_pts; yading@10: pkt->pts = pic_out.i_pts; yading@10: if (ctx->has_b_frames) { yading@10: if (!x4->out_frame_count) yading@10: pkt->dts = pkt->pts - (x4->pts_buffer[1] - x4->pts_buffer[0]); yading@10: else yading@10: pkt->dts = x4->pts_buffer[(x4->out_frame_count-1)%(ctx->max_b_frames+1)]; yading@10: } else yading@10: pkt->dts = pkt->pts; yading@10: yading@10: switch (pic_out.i_type) { yading@10: case XAVS_TYPE_IDR: yading@10: case XAVS_TYPE_I: yading@10: x4->out_pic.pict_type = AV_PICTURE_TYPE_I; yading@10: break; yading@10: case XAVS_TYPE_P: yading@10: x4->out_pic.pict_type = AV_PICTURE_TYPE_P; yading@10: break; yading@10: case XAVS_TYPE_B: yading@10: case XAVS_TYPE_BREF: yading@10: x4->out_pic.pict_type = AV_PICTURE_TYPE_B; yading@10: break; yading@10: } yading@10: yading@10: /* There is no IDR frame in AVS JiZhun */ yading@10: /* Sequence header is used as a flag */ yading@10: if (pic_out.i_type == XAVS_TYPE_I) { yading@10: x4->out_pic.key_frame = 1; yading@10: pkt->flags |= AV_PKT_FLAG_KEY; yading@10: } yading@10: yading@10: x4->out_pic.quality = (pic_out.i_qpplus1 - 1) * FF_QP2LAMBDA; yading@10: yading@10: x4->out_frame_count++; yading@10: *got_packet = ret; yading@10: return 0; yading@10: } yading@10: yading@10: static av_cold int XAVS_close(AVCodecContext *avctx) yading@10: { yading@10: XavsContext *x4 = avctx->priv_data; yading@10: yading@10: av_freep(&avctx->extradata); yading@10: av_free(x4->sei); yading@10: av_freep(&x4->pts_buffer); yading@10: yading@10: if (x4->enc) yading@10: xavs_encoder_close(x4->enc); yading@10: yading@10: return 0; yading@10: } yading@10: yading@10: static av_cold int XAVS_init(AVCodecContext *avctx) yading@10: { yading@10: XavsContext *x4 = avctx->priv_data; yading@10: yading@10: x4->sei_size = 0; yading@10: xavs_param_default(&x4->params); yading@10: yading@10: x4->params.pf_log = XAVS_log; yading@10: x4->params.p_log_private = avctx; yading@10: x4->params.i_keyint_max = avctx->gop_size; yading@10: if (avctx->bit_rate) { yading@10: x4->params.rc.i_bitrate = avctx->bit_rate / 1000; yading@10: x4->params.rc.i_rc_method = XAVS_RC_ABR; yading@10: } yading@10: x4->params.rc.i_vbv_buffer_size = avctx->rc_buffer_size / 1000; yading@10: x4->params.rc.i_vbv_max_bitrate = avctx->rc_max_rate / 1000; yading@10: x4->params.rc.b_stat_write = avctx->flags & CODEC_FLAG_PASS1; yading@10: if (avctx->flags & CODEC_FLAG_PASS2) { yading@10: x4->params.rc.b_stat_read = 1; yading@10: } else { yading@10: if (x4->crf >= 0) { yading@10: x4->params.rc.i_rc_method = XAVS_RC_CRF; yading@10: x4->params.rc.f_rf_constant = x4->crf; yading@10: } else if (x4->cqp >= 0) { yading@10: x4->params.rc.i_rc_method = XAVS_RC_CQP; yading@10: x4->params.rc.i_qp_constant = x4->cqp; yading@10: } yading@10: } yading@10: yading@10: if (x4->aud >= 0) yading@10: x4->params.b_aud = x4->aud; yading@10: if (x4->mbtree >= 0) yading@10: x4->params.rc.b_mb_tree = x4->mbtree; yading@10: if (x4->direct_pred >= 0) yading@10: x4->params.analyse.i_direct_mv_pred = x4->direct_pred; yading@10: if (x4->fast_pskip >= 0) yading@10: x4->params.analyse.b_fast_pskip = x4->fast_pskip; yading@10: if (x4->mixed_refs >= 0) yading@10: x4->params.analyse.b_mixed_references = x4->mixed_refs; yading@10: if (x4->b_bias != INT_MIN) yading@10: x4->params.i_bframe_bias = x4->b_bias; yading@10: if (x4->cplxblur >= 0) yading@10: x4->params.rc.f_complexity_blur = x4->cplxblur; yading@10: yading@10: x4->params.i_bframe = avctx->max_b_frames; yading@10: /* cabac is not included in AVS JiZhun Profile */ yading@10: x4->params.b_cabac = 0; yading@10: yading@10: x4->params.i_bframe_adaptive = avctx->b_frame_strategy; yading@10: yading@10: avctx->has_b_frames = !!avctx->max_b_frames; yading@10: yading@10: /* AVS doesn't allow B picture as reference */ yading@10: /* The max allowed reference frame number of B is 2 */ yading@10: x4->params.i_keyint_min = avctx->keyint_min; yading@10: if (x4->params.i_keyint_min > x4->params.i_keyint_max) yading@10: x4->params.i_keyint_min = x4->params.i_keyint_max; yading@10: yading@10: x4->params.i_scenecut_threshold = avctx->scenechange_threshold; yading@10: yading@10: // x4->params.b_deblocking_filter = avctx->flags & CODEC_FLAG_LOOP_FILTER; yading@10: yading@10: x4->params.rc.i_qp_min = avctx->qmin; yading@10: x4->params.rc.i_qp_max = avctx->qmax; yading@10: x4->params.rc.i_qp_step = avctx->max_qdiff; yading@10: yading@10: x4->params.rc.f_qcompress = avctx->qcompress; /* 0.0 => cbr, 1.0 => constant qp */ yading@10: x4->params.rc.f_qblur = avctx->qblur; /* temporally blur quants */ yading@10: yading@10: x4->params.i_frame_reference = avctx->refs; yading@10: yading@10: x4->params.i_width = avctx->width; yading@10: x4->params.i_height = avctx->height; yading@10: x4->params.vui.i_sar_width = avctx->sample_aspect_ratio.num; yading@10: x4->params.vui.i_sar_height = avctx->sample_aspect_ratio.den; yading@10: /* This is only used for counting the fps */ yading@10: x4->params.i_fps_num = avctx->time_base.den; yading@10: x4->params.i_fps_den = avctx->time_base.num; yading@10: x4->params.analyse.inter = XAVS_ANALYSE_I8x8 |XAVS_ANALYSE_PSUB16x16| XAVS_ANALYSE_BSUB16x16; yading@10: yading@10: switch (avctx->me_method) { yading@10: case ME_EPZS: yading@10: x4->params.analyse.i_me_method = XAVS_ME_DIA; yading@10: break; yading@10: case ME_HEX: yading@10: x4->params.analyse.i_me_method = XAVS_ME_HEX; yading@10: break; yading@10: case ME_UMH: yading@10: x4->params.analyse.i_me_method = XAVS_ME_UMH; yading@10: break; yading@10: case ME_FULL: yading@10: x4->params.analyse.i_me_method = XAVS_ME_ESA; yading@10: break; yading@10: case ME_TESA: yading@10: x4->params.analyse.i_me_method = XAVS_ME_TESA; yading@10: break; yading@10: default: yading@10: x4->params.analyse.i_me_method = XAVS_ME_HEX; yading@10: } yading@10: yading@10: x4->params.analyse.i_me_range = avctx->me_range; yading@10: x4->params.analyse.i_subpel_refine = avctx->me_subpel_quality; yading@10: yading@10: x4->params.analyse.b_chroma_me = avctx->me_cmp & FF_CMP_CHROMA; yading@10: /* AVS P2 only enables 8x8 transform */ yading@10: x4->params.analyse.b_transform_8x8 = 1; //avctx->flags2 & CODEC_FLAG2_8X8DCT; yading@10: yading@10: x4->params.analyse.i_trellis = avctx->trellis; yading@10: x4->params.analyse.i_noise_reduction = avctx->noise_reduction; yading@10: yading@10: if (avctx->level > 0) yading@10: x4->params.i_level_idc = avctx->level; yading@10: yading@10: x4->params.rc.f_rate_tolerance = yading@10: (float)avctx->bit_rate_tolerance/avctx->bit_rate; yading@10: yading@10: if ((avctx->rc_buffer_size) && yading@10: (avctx->rc_initial_buffer_occupancy <= avctx->rc_buffer_size)) { yading@10: x4->params.rc.f_vbv_buffer_init = yading@10: (float)avctx->rc_initial_buffer_occupancy / avctx->rc_buffer_size; yading@10: } else yading@10: x4->params.rc.f_vbv_buffer_init = 0.9; yading@10: yading@10: /* TAG:do we have MB tree RC method */ yading@10: /* what is the RC method we are now using? Default NO */ yading@10: x4->params.rc.f_ip_factor = 1 / fabs(avctx->i_quant_factor); yading@10: x4->params.rc.f_pb_factor = avctx->b_quant_factor; yading@10: x4->params.analyse.i_chroma_qp_offset = avctx->chromaoffset; yading@10: yading@10: x4->params.analyse.b_psnr = avctx->flags & CODEC_FLAG_PSNR; yading@10: x4->params.i_log_level = XAVS_LOG_DEBUG; yading@10: x4->params.i_threads = avctx->thread_count; yading@10: x4->params.b_interlaced = avctx->flags & CODEC_FLAG_INTERLACED_DCT; yading@10: yading@10: if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) yading@10: x4->params.b_repeat_headers = 0; yading@10: yading@10: x4->enc = xavs_encoder_open(&x4->params); yading@10: if (!x4->enc) yading@10: return -1; yading@10: yading@10: if (!(x4->pts_buffer = av_mallocz((avctx->max_b_frames+1) * sizeof(*x4->pts_buffer)))) yading@10: return AVERROR(ENOMEM); yading@10: yading@10: avctx->coded_frame = &x4->out_pic; yading@10: /* TAG: Do we have GLOBAL HEADER in AVS */ yading@10: /* We Have PPS and SPS in AVS */ yading@10: if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) { yading@10: xavs_nal_t *nal; yading@10: int nnal, s, i, size; yading@10: uint8_t *p; yading@10: yading@10: s = xavs_encoder_headers(x4->enc, &nal, &nnal); yading@10: yading@10: avctx->extradata = p = av_malloc(s); yading@10: for (i = 0; i < nnal; i++) { yading@10: /* Don't put the SEI in extradata. */ yading@10: if (nal[i].i_type == NAL_SEI) { yading@10: x4->sei = av_malloc( 5 + nal[i].i_payload * 4 / 3 ); yading@10: if (xavs_nal_encode(x4->sei, &x4->sei_size, 1, nal + i) < 0) yading@10: return -1; yading@10: yading@10: continue; yading@10: } yading@10: size = xavs_nal_encode(p, &s, 1, nal + i); yading@10: if (size < 0) yading@10: return -1; yading@10: p += size; yading@10: } yading@10: avctx->extradata_size = p - avctx->extradata; yading@10: } yading@10: return 0; yading@10: } yading@10: yading@10: #define OFFSET(x) offsetof(XavsContext, x) yading@10: #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM yading@10: static const AVOption options[] = { yading@10: { "crf", "Select the quality for constant quality mode", OFFSET(crf), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE }, yading@10: { "qp", "Constant quantization parameter rate control method",OFFSET(cqp), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE }, yading@10: { "b-bias", "Influences how often B-frames are used", OFFSET(b_bias), AV_OPT_TYPE_INT, {.i64 = INT_MIN}, INT_MIN, INT_MAX, VE }, yading@10: { "cplxblur", "Reduce fluctuations in QP (before curve compression)", OFFSET(cplxblur), AV_OPT_TYPE_FLOAT, {.dbl = -1 }, -1, FLT_MAX, VE}, yading@10: { "direct-pred", "Direct MV prediction mode", OFFSET(direct_pred), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, INT_MAX, VE, "direct-pred" }, yading@10: { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_NONE }, 0, 0, VE, "direct-pred" }, yading@10: { "spatial", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_SPATIAL }, 0, 0, VE, "direct-pred" }, yading@10: { "temporal", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_TEMPORAL }, 0, 0, VE, "direct-pred" }, yading@10: { "auto", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = XAVS_DIRECT_PRED_AUTO }, 0, 0, VE, "direct-pred" }, yading@10: { "aud", "Use access unit delimiters.", OFFSET(aud), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, yading@10: { "mbtree", "Use macroblock tree ratecontrol.", OFFSET(mbtree), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, yading@10: { "mixed-refs", "One reference per partition, as opposed to one reference per macroblock", OFFSET(mixed_refs), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 1, VE }, yading@10: { "fast-pskip", NULL, OFFSET(fast_pskip), AV_OPT_TYPE_INT, {.i64 = -1 }, -1, 1, VE}, yading@10: { NULL }, yading@10: }; yading@10: yading@10: static const AVClass class = { yading@10: .class_name = "libxavs", yading@10: .item_name = av_default_item_name, yading@10: .option = options, yading@10: .version = LIBAVUTIL_VERSION_INT, yading@10: }; yading@10: yading@10: static const AVCodecDefault xavs_defaults[] = { yading@10: { "b", "0" }, yading@10: { NULL }, yading@10: }; yading@10: yading@10: AVCodec ff_libxavs_encoder = { yading@10: .name = "libxavs", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_CAVS, yading@10: .priv_data_size = sizeof(XavsContext), yading@10: .init = XAVS_init, yading@10: .encode2 = XAVS_frame, yading@10: .close = XAVS_close, yading@10: .capabilities = CODEC_CAP_DELAY | CODEC_CAP_AUTO_THREADS, yading@10: .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE }, yading@10: .long_name = NULL_IF_CONFIG_SMALL("libxavs Chinese AVS (Audio Video Standard)"), yading@10: .priv_class = &class, yading@10: .defaults = xavs_defaults, yading@10: };