From: Jan Ekström <jan.ekst...@24i.com>
Required by MP4's AC3SpecificBox and MPEG-TS AC-3 audio_descriptor,
of which the former is implemented in our MP4 writer.
Signed-off-by: Jan Ekström <jan.ekst...@24i.com>
---
libavcodec/ac3_parser.c | 3 +++
libavcodec/ac3_parser_internal.h | 1 +
2 files changed, 4 insertions(+)
diff --git a/libavcodec/ac3_parser.c b/libavcodec/ac3_parser.c
index 119b1598c5..852c9e6b0d 100644
--- a/libavcodec/ac3_parser.c
+++ b/libavcodec/ac3_parser.c
@@ -70,6 +70,7 @@ int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo
*hdr)
return AAC_AC3_PARSE_ERROR_BSID;
hdr->num_blocks = 6;
+ hdr->ac3_bit_rate_code = -1;
/* set default mix levels */
hdr->center_mix_level = 5; // -4.5dB
@@ -89,6 +90,8 @@ int ff_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo
*hdr)
if(frame_size_code > 37)
return AAC_AC3_PARSE_ERROR_FRAME_SIZE;
+ hdr->ac3_bit_rate_code = (frame_size_code >> 1);
+
skip_bits(gbc, 5); // skip bsid, already got it
hdr->bitstream_mode = get_bits(gbc, 3);
diff --git a/libavcodec/ac3_parser_internal.h b/libavcodec/ac3_parser_internal.h
index dd57dc95a6..bd4e1bbffb 100644
--- a/libavcodec/ac3_parser_internal.h
+++ b/libavcodec/ac3_parser_internal.h
@@ -60,6 +60,7 @@ typedef struct AC3HeaderInfo {
uint8_t channels;
uint16_t frame_size;
uint64_t channel_layout;
+ int8_t ac3_bit_rate_code;
/** @} */
} AC3HeaderInfo;
--
2.36.1
_______________________________________________
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".
