diff options
| -rw-r--r-- | libavcodec/cbs_av1.c | 16 | ||||
| -rw-r--r-- | libavcodec/cbs_av1.h | 5 | ||||
| -rw-r--r-- | libavcodec/cbs_av1_syntax_template.c | 82 |
3 files changed, 91 insertions, 12 deletions
diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c index 1c49d90f51..ff32a6fca5 100644 --- a/libavcodec/cbs_av1.c +++ b/libavcodec/cbs_av1.c @@ -996,7 +996,10 @@ 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, + unit->data_ref); if (err < 0) return err; } @@ -1016,7 +1019,8 @@ static int cbs_av1_read_unit(CodedBitstreamContext *ctx, break; case AV1_OBU_FRAME: { - err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->obu.frame); + err = cbs_av1_read_frame_obu(ctx, &gbc, &obu->obu.frame, + unit->data_ref); if (err < 0) return err; @@ -1124,7 +1128,10 @@ 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, + NULL); if (err < 0) return err; } @@ -1141,7 +1148,7 @@ static int cbs_av1_write_obu(CodedBitstreamContext *ctx, break; case AV1_OBU_FRAME: { - err = cbs_av1_write_frame_obu(ctx, pbc, &obu->obu.frame); + err = cbs_av1_write_frame_obu(ctx, pbc, &obu->obu.frame, NULL); if (err < 0) return err; @@ -1302,6 +1309,7 @@ static void cbs_av1_close(CodedBitstreamContext *ctx) CodedBitstreamAV1Context *priv = ctx->priv_data; av_buffer_unref(&priv->sequence_header_ref); + av_buffer_unref(&priv->frame_header_ref); av_freep(&priv->write_buffer); } diff --git a/libavcodec/cbs_av1.h b/libavcodec/cbs_av1.h index 614a0bf108..f662265f75 100644 --- a/libavcodec/cbs_av1.h +++ b/libavcodec/cbs_av1.h @@ -399,7 +399,10 @@ typedef struct CodedBitstreamAV1Context { AV1RawSequenceHeader *sequence_header; AVBufferRef *sequence_header_ref; - int seen_frame_header; + int seen_frame_header; + AVBufferRef *frame_header_ref; + 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..0da79b615d 100644 --- a/libavcodec/cbs_av1_syntax_template.c +++ b/libavcodec/cbs_av1_syntax_template.c @@ -1463,24 +1463,90 @@ 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, + AVBufferRef *rw_buffer_ref) { CodedBitstreamAV1Context *priv = ctx->priv_data; - int err; - - HEADER("Frame Header"); + int start_pos, fh_bits, fh_bytes, err; + 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 i, b; + uint32_t val; + + HEADER("Redundant Frame Header"); + + av_assert0(priv->frame_header_ref && priv->frame_header); + + init_get_bits(&fh, priv->frame_header, + priv->frame_header_size); + for (i = 0; i < priv->frame_header_size; i += 8) { + b = FFMIN(priv->frame_header_size - i, 8); + val = get_bits(&fh, b); + xf(b, frame_header_copy[i], + val, val, val, 1, i / 8); + } + } } 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_buffer_unref(&priv->frame_header_ref); + +#ifdef READ + fh_bits = get_bits_count(rw) - start_pos; + fh_start = (uint8_t*)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; + + if (rw_buffer_ref) { + priv->frame_header_ref = av_buffer_ref(rw_buffer_ref); + if (!priv->frame_header_ref) + return AVERROR(ENOMEM); + priv->frame_header = fh_start; + } else { + priv->frame_header_ref = + av_buffer_alloc(fh_bytes + AV_INPUT_BUFFER_PADDING_SIZE); + if (!priv->frame_header_ref) + return AVERROR(ENOMEM); + priv->frame_header = priv->frame_header_ref->data; + memcpy(priv->frame_header, fh_start, fh_bytes); + } } } @@ -1524,11 +1590,13 @@ static int FUNC(tile_group_obu)(CodedBitstreamContext *ctx, RWContext *rw, } static int FUNC(frame_obu)(CodedBitstreamContext *ctx, RWContext *rw, - AV1RawFrame *current) + AV1RawFrame *current, + AVBufferRef *rw_buffer_ref) { int err; - CHECK(FUNC(frame_header_obu)(ctx, rw, ¤t->header)); + CHECK(FUNC(frame_header_obu)(ctx, rw, ¤t->header, + 0, rw_buffer_ref)); CHECK(FUNC(byte_alignment)(ctx, rw)); |