From: Zhao Zhili <zhiliz...@tencent.com> --- configure | 2 +- libavcodec/libx264.c | 148 ++++++++++++++++++++++++++++++++++++------- 2 files changed, 125 insertions(+), 25 deletions(-)
diff --git a/configure b/configure index bbf1a70731..ef58c3fe97 100755 --- a/configure +++ b/configure @@ -3491,7 +3491,7 @@ libwebp_encoder_deps="libwebp" libwebp_anim_encoder_deps="libwebp" libx262_encoder_deps="libx262" libx264_encoder_deps="libx264" -libx264_encoder_select="atsc_a53" +libx264_encoder_select="atsc_a53 h264parse" libx264rgb_encoder_deps="libx264" libx264rgb_encoder_select="libx264_encoder" libx265_encoder_deps="libx265" diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c index 10d646bd76..10dfda125d 100644 --- a/libavcodec/libx264.c +++ b/libavcodec/libx264.c @@ -34,9 +34,12 @@ #include "avcodec.h" #include "codec_internal.h" #include "encode.h" +#include "get_bits.h" +#include "h264_ps.h" #include "internal.h" #include "packet_internal.h" #include "atsc_a53.h" +#include "put_bits.h" #include "sei.h" #include <x264.h> @@ -865,6 +868,124 @@ static int convert_pix_fmt(enum AVPixelFormat pix_fmt) return 0; } +static int set_avcc_extradata(AVCodecContext *avctx, x264_nal_t *nal, int nnal) +{ + x264_nal_t *sps_nal = NULL; + x264_nal_t *pps_nal = NULL; + GetBitContext gbc; + PutBitContext pbc; + H264ParamSets ps = { 0 }; + uint8_t *p; + int ret, profile; + + /* We know it's in the order of SPS/PPS/SEI, but it's not documented in x264 API. + * The x264 param i_sps_id implies there is a single pair of SPS/PPS. + */ + for (int i = 0; i < nnal; i++) { + if (nal[i].i_type == NAL_SPS) + sps_nal = &nal[i]; + else if (nal[i].i_type == NAL_PPS) + pps_nal = &nal[i]; + } + av_assert0(sps_nal); + av_assert0(pps_nal); + + // +11 for AVCDecoderConfigurationRecord, will shrink to the real size finally + avctx->extradata_size = sps_nal->i_payload + pps_nal->i_payload + 11; + avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_MIN_SIZE); + if (!avctx->extradata) + return AVERROR(ENOMEM); + + // Skip size part + p = sps_nal->p_payload + 4; + init_get_bits8(&gbc, p, sps_nal->i_payload - 4); + skip_bits(&gbc, 8); + ret = ff_h264_decode_seq_parameter_set(&gbc, avctx, &ps, 0); + if (ret < 0) + return ret; + + for (int i = 0; i < FF_ARRAY_ELEMS(ps.sps_list); i++) { + if (ps.sps_list[i]) { + ps.sps = ps.sps_list[i]; + break; + } + } + + // Now create AVCDecoderConfigurationRecord + init_put_bits(&pbc, avctx->extradata, avctx->extradata_size); + put_bits(&pbc, 8, 1); // version + put_bits(&pbc, 8, ps.sps->profile_idc); // AVCProfileIndication + put_bits(&pbc, 8, ps.sps->constraint_set_flags); // profile_compatibility + put_bits(&pbc, 8, ps.sps->level_idc); // AVCLevelIndication + put_bits(&pbc, 11, 0x7FF); + + p = sps_nal->p_payload + 4; + put_bits(&pbc, 5, 1); // numOfSequenceParameterSets + put_bits(&pbc, 16, sps_nal->i_payload - 4); // sequenceParameterSetLength + for (int i = 0; i < sps_nal->i_payload - 4; i++) + put_bits(&pbc, 8, p[i]); + + p = pps_nal->p_payload + 4; + put_bits(&pbc, 8, 1); // numOfPictureParameterSets + put_bits(&pbc, 16, pps_nal->i_payload - 4); // pictureParameterSetLength + for (int i = 0; i < pps_nal->i_payload - 4; i++) + put_bits(&pbc, 8, p[i]); + + profile = ps.sps->profile_idc; + if (profile != 66 && profile != 77 && profile != 88) { + put_bits(&pbc, 6, 0x3F); + put_bits(&pbc, 2, ps.sps->chroma_format_idc); + put_bits(&pbc, 5, 0x1F); + put_bits(&pbc, 3, ps.sps->bit_depth_luma - 8); + put_bits(&pbc, 5, 0x1F); + put_bits(&pbc, 3, ps.sps->bit_depth_chroma - 8); + put_bits(&pbc, 8, 0); + } + flush_put_bits(&pbc); + avctx->extradata_size = put_bytes_output(&pbc); + + ff_h264_ps_uninit(&ps); + + return 0; +} + +static int set_extradata(AVCodecContext *avctx) +{ + X264Context *x4 = avctx->priv_data; + x264_nal_t *nal; + uint8_t *p; + int nnal, s; + + s = x264_encoder_headers(x4->enc, &nal, &nnal); + if (s < 0) + return AVERROR_EXTERNAL; + + if (!x4->params.b_annexb) + return set_avcc_extradata(avctx, nal, nnal); + + avctx->extradata = p = av_mallocz(s + AV_INPUT_BUFFER_PADDING_SIZE); + if (!p) + return AVERROR(ENOMEM); + + for (int i = 0; i < nnal; i++) { + /* Don't put the SEI in extradata. */ + if (nal[i].i_type == NAL_SEI) { + av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload + 25); + x4->sei_size = nal[i].i_payload; + x4->sei = av_malloc(x4->sei_size); + if (!x4->sei) + return AVERROR(ENOMEM); + memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload); + continue; + } + memcpy(p, nal[i].p_payload, nal[i].i_payload); + p += nal[i].i_payload; + } + avctx->extradata_size = p - avctx->extradata; + + return 0; +} + #define PARSE_X264_OPT(name, var)\ if (x4->var && x264_param_parse(&x4->params, name, x4->var) < 0) {\ av_log(avctx, AV_LOG_ERROR, "Error parsing option '%s' with value '%s'.\n", name, x4->var);\ @@ -1233,30 +1354,9 @@ FF_ENABLE_DEPRECATION_WARNINGS return AVERROR_EXTERNAL; if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) { - x264_nal_t *nal; - uint8_t *p; - int nnal, s, i; - - s = x264_encoder_headers(x4->enc, &nal, &nnal); - avctx->extradata = p = av_mallocz(s + AV_INPUT_BUFFER_PADDING_SIZE); - if (!p) - return AVERROR(ENOMEM); - - for (i = 0; i < nnal; i++) { - /* Don't put the SEI in extradata. */ - if (nal[i].i_type == NAL_SEI) { - av_log(avctx, AV_LOG_INFO, "%s\n", nal[i].p_payload+25); - x4->sei_size = nal[i].i_payload; - x4->sei = av_malloc(x4->sei_size); - if (!x4->sei) - return AVERROR(ENOMEM); - memcpy(x4->sei, nal[i].p_payload, nal[i].i_payload); - continue; - } - memcpy(p, nal[i].p_payload, nal[i].i_payload); - p += nal[i].i_payload; - } - avctx->extradata_size = p - avctx->extradata; + ret = set_extradata(avctx); + if (ret < 0) + return ret; } cpb_props = ff_encode_add_cpb_side_data(avctx); -- 2.42.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".