On 11/4/2018 9:10 PM, Mark Thompson wrote: > --- > Includes support for using them when the normal frame header as been lost > (try "-bsf:v filter_units=remove_types=3"). > > > libavcodec/cbs_av1.c | 8 +++- > libavcodec/cbs_av1.h | 2 + > libavcodec/cbs_av1_syntax_template.c | 64 +++++++++++++++++++++++++--- > 3 files changed, 66 insertions(+), 8 deletions(-) > > diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c > index 1c49d90f51..b61b757f41 100644 > --- a/libavcodec/cbs_av1.c > +++ b/libavcodec/cbs_av1.c > @@ -996,7 +996,9 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx, > case AV1_OBU_REDUNDANT_FRAME_HEADER: > { > err = cbs_av1_read_frame_header_obu(ctx, &gbc, > - &obu->obu.frame_header); > + &obu->obu.frame_header, > + obu->header.obu_type == > + > AV1_OBU_REDUNDANT_FRAME_HEADER); > if (err < 0) > return err; > } > @@ -1124,7 +1126,9 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx, > case AV1_OBU_REDUNDANT_FRAME_HEADER: > { > err = cbs_av1_write_frame_header_obu(ctx, pbc, > - &obu->obu.frame_header); > + &obu->obu.frame_header, > + obu->header.obu_type == > + > AV1_OBU_REDUNDANT_FRAME_HEADER); > if (err < 0) > return err; > } > diff --git a/libavcodec/cbs_av1.h b/libavcodec/cbs_av1.h > index b66a09c389..af9e88df71 100644 > --- a/libavcodec/cbs_av1.h > +++ b/libavcodec/cbs_av1.h > @@ -400,6 +400,8 @@ typedef struct CodedBitstreamAV1Context { > AVBufferRef *sequence_header_ref; > > int seen_frame_header; > + uint8_t *frame_header; > + size_t frame_header_size; > > int temporal_id; > int spatial_id; > diff --git a/libavcodec/cbs_av1_syntax_template.c > b/libavcodec/cbs_av1_syntax_template.c > index e146bbf8bb..5649af841a 100644 > --- a/libavcodec/cbs_av1_syntax_template.c > +++ b/libavcodec/cbs_av1_syntax_template.c > @@ -1463,24 +1463,76 @@ static int > FUNC(uncompressed_header)(CodedBitstreamContext *ctx, RWContext *rw, > } > > static int FUNC(frame_header_obu)(CodedBitstreamContext *ctx, RWContext *rw, > - AV1RawFrameHeader *current) > + AV1RawFrameHeader *current, int redundant) > { > CodedBitstreamAV1Context *priv = ctx->priv_data; > - int err; > - > - HEADER("Frame Header"); > + int start_pos, fh_bits, fh_bytes, err; > + const uint8_t *fh_start; > > if (priv->seen_frame_header) { > - // Nothing to do. > + if (!redundant) { > + av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid repeated " > + "frame header OBU.\n"); > + return AVERROR_INVALIDDATA; > + } else { > + GetBitContext fh; > + size_t k; > + int b; > + > + HEADER("Redundant Frame Header"); > + > + init_get_bits(&fh, priv->frame_header, > + priv->frame_header_size); > + for (k = 0; k < priv->frame_header_size; k++) { > + b = get_bits1(&fh); > + xf(1, frame_header_copy[k], b, b, b, 1, k);
This is making a lot of noise in the trace output for no real gain, since it prints every single bit as its own line. Can you silence it? > + } > + } > } else { > + if (redundant) > + HEADER("Redundant Frame Header (used as Frame Header)"); > + else > + HEADER("Frame Header"); > + > priv->seen_frame_header = 1; > > +#ifdef READ > + start_pos = get_bits_count(rw); > +#else > + start_pos = put_bits_count(rw); > +#endif > + > CHECK(FUNC(uncompressed_header)(ctx, rw, current)); > > if (current->show_existing_frame) { > priv->seen_frame_header = 0; > } else { > priv->seen_frame_header = 1; > + > + av_freep(&priv->frame_header); > + > +#ifdef READ > + fh_bits = get_bits_count(rw) - start_pos; > + fh_start = rw->buffer + start_pos / 8; > +#else > + // Need to flush the bitwriter so that we can copy its output, > + // but use a copy so we don't affect the caller's structure. > + { > + PutBitContext tmp = *rw; > + flush_put_bits(&tmp); > + } > + > + fh_bits = put_bits_count(rw) - start_pos; > + fh_start = rw->buf + start_pos / 8; > +#endif > + fh_bytes = (fh_bits + 7) / 8; > + > + priv->frame_header_size = fh_bits; > + priv->frame_header = > + av_mallocz(fh_bytes + AV_INPUT_BUFFER_PADDING_SIZE); > + if (!priv->frame_header) > + return AVERROR(ENOMEM); > + memcpy(priv->frame_header, fh_start, fh_bytes); No way to use AVBufferRef for this? I think i may have asked this before... > } > } > > @@ -1528,7 +1580,7 @@ static int FUNC(frame_obu)(CodedBitstreamContext *ctx, > RWContext *rw, > { > int err; > > - CHECK(FUNC(frame_header_obu)(ctx, rw, ¤t->header)); > + CHECK(FUNC(frame_header_obu)(ctx, rw, ¤t->header, 0)); > > CHECK(FUNC(byte_alignment)(ctx, rw)); Seems to work, so LGTM if the above can't be changed. Thanks! _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel