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Revert "avcodec/mpeg12dec: Do not alter avctx->rc_buffer_size" 

This reverts commit eb88ccb92e.

AVCodecContext fields are the proper place for a decoder to export such values.
This change is in preparation for the following commits.
This commit is contained in:
James Almer 2023-09-01 13:20:55 -03:00
parent d33c630b2a
commit b6627a57f4
4 changed files with 10 additions and 8 deletions
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3
doc/APIchanges
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@ -2,6 +2,9 @@ The last version increases of all libraries were on 2023-02-09
API changes, most recent first:
2023-09-06 - xxxxxxxxxx - lavc 60.25.101 - avcodec.h
AVCodecContext.rc_buffer_size may now be set by decoders.
2023-09-02 - xxxxxxxxxx - lavu 58.19.100 - executor.h
Add AVExecutor API

2
libavcodec/avcodec.h
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@ -1260,7 +1260,7 @@ typedef struct AVCodecContext {
/**
* decoder bitstream buffer size
* - encoding: Set by user.
* - decoding: unused
* - decoding: May be set by libavcodec.
*/
int rc_buffer_size;

11
libavcodec/mpeg12dec.c
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@ -76,7 +76,6 @@ typedef struct Mpeg1Context {
unsigned aspect_ratio_info;
AVRational save_aspect;
int save_width, save_height, save_progressive_seq;
int rc_buffer_size;
AVRational frame_rate_ext; /* MPEG-2 specific framerate modificator */
unsigned frame_rate_index;
int sync; /* Did we reach a sync point like a GOP/SEQ/KEYFrame? */
@ -1392,7 +1391,7 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
bit_rate_ext = get_bits(&s->gb, 12); /* XXX: handle it */
s->bit_rate += (bit_rate_ext << 18) * 400LL;
check_marker(s->avctx, &s->gb, "after bit rate extension");
s1->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
s->avctx->rc_buffer_size += get_bits(&s->gb, 8) * 1024 * 16 << 10;
s->low_delay = get_bits1(&s->gb);
if (s->avctx->flags & AV_CODEC_FLAG_LOW_DELAY)
@ -1405,7 +1404,7 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
s->codec_id = s->avctx->codec_id = AV_CODEC_ID_MPEG2VIDEO;
if (cpb_props = ff_add_cpb_side_data(s->avctx)) {
cpb_props->buffer_size = s1->rc_buffer_size;
cpb_props->buffer_size = s->avctx->rc_buffer_size;
if (s->bit_rate != 0x3FFFF*400)
cpb_props->max_bitrate = s->bit_rate;
}
@ -1414,7 +1413,7 @@ static void mpeg_decode_sequence_extension(Mpeg1Context *s1)
av_log(s->avctx, AV_LOG_DEBUG,
"profile: %d, level: %d ps: %d cf:%d vbv buffer: %d, bitrate:%"PRId64"\n",
s->avctx->profile, s->avctx->level, s->progressive_sequence, s->chroma_format,
s1->rc_buffer_size, s->bit_rate);
s->avctx->rc_buffer_size, s->bit_rate);
}
static void mpeg_decode_sequence_display_extension(Mpeg1Context *s1)
@ -2104,7 +2103,7 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
return AVERROR_INVALIDDATA;
}
s1->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16;
s->avctx->rc_buffer_size = get_bits(&s->gb, 10) * 1024 * 16;
skip_bits(&s->gb, 1);
/* get matrix */
@ -2152,7 +2151,7 @@ static int mpeg1_decode_sequence(AVCodecContext *avctx,
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_DEBUG, "vbv buffer: %d, bitrate:%"PRId64", aspect_ratio_info: %d \n",
s1->rc_buffer_size, s->bit_rate, s1->aspect_ratio_info);
s->avctx->rc_buffer_size, s->bit_rate, s1->aspect_ratio_info);
return 0;
}

2
libavcodec/version.h
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@ -30,7 +30,7 @@
#include "version_major.h"
#define LIBAVCODEC_VERSION_MINOR 25
#define LIBAVCODEC_VERSION_MICRO 100
#define LIBAVCODEC_VERSION_MICRO 101
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \