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avcodec/get_buffer: Remove redundant check

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It is unnecessary to check for whether the number of planes
of an already existing audio pool coincides with the number
of planes to use for the frame: If the common format of both
is planar, then the number of planes coincides with the number
of channels for which there is already a check*; if not,
then both the existing pool as well as the frame use one pool.

*: In fact, one could reuse the pool in this case even if the
number of channels changes.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2024-04-20 03:11:39 +02:00
parent 2786d34712
commit 0aaabe1fd7
1 changed files with 8 additions and 12 deletions
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20
libavcodec/get_buffer.c
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@ -65,20 +65,15 @@ static void frame_pool_free(FFRefStructOpaque unused, void *obj)
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
{
FramePool *pool = avctx->internal->pool;
int i, ret, ch, planes;
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
int planar = av_sample_fmt_is_planar(frame->format);
ch = frame->ch_layout.nb_channels;
planes = planar ? ch : 1;
}
int i, ret;
if (pool && pool->format == frame->format) {
if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
pool->width == frame->width && pool->height == frame->height)
return 0;
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
pool->channels == ch && frame->nb_samples == pool->samples)
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
pool->channels == frame->ch_layout.nb_channels &&
frame->nb_samples == pool->samples)
return 0;
}
@ -141,7 +136,8 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
break;
}
case AVMEDIA_TYPE_AUDIO: {
ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
ret = av_samples_get_buffer_size(&pool->linesize[0],
frame->ch_layout.nb_channels,
frame->nb_samples, frame->format, 0);
if (ret < 0)
goto fail;
@ -153,9 +149,9 @@ static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
}
pool->format = frame->format;
pool->planes = planes;
pool->channels = ch;
pool->channels = frame->ch_layout.nb_channels;
pool->samples = frame->nb_samples;
pool->planes = av_sample_fmt_is_planar(pool->format) ? pool->channels : 1;
break;
}
default: av_assert0(0);