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lavfi: use an audio frame pool for each link of the filtergraph

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This commit is contained in:
Matthieu Bouron 2017-01-03 17:44:14 +01:00 committed by Matthieu Bouron
parent b1ed7957b8
commit e1f4971209
1 changed files with 36 additions and 14 deletions
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50
libavfilter/audio.c
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@ -27,6 +27,9 @@
#include "avfilter.h"
#include "internal.h"
#define BUFFER_ALIGN 0
AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
{
return ff_get_audio_buffer(link->dst->outputs[0], nb_samples);
@ -34,29 +37,48 @@ AVFrame *ff_null_get_audio_buffer(AVFilterLink *link, int nb_samples)
AVFrame *ff_default_get_audio_buffer(AVFilterLink *link, int nb_samples)
{
AVFrame *frame = av_frame_alloc();
AVFrame *frame = NULL;
int channels = link->channels;
int ret;
av_assert0(channels == av_get_channel_layout_nb_channels(link->channel_layout) || !av_get_channel_layout_nb_channels(link->channel_layout));
if (!link->frame_pool) {
link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels,
nb_samples, link->format, BUFFER_ALIGN);
if (!link->frame_pool)
return NULL;
} else {
int pool_channels = 0;
int pool_nb_samples = 0;
int pool_align = 0;
enum AVSampleFormat pool_format = AV_SAMPLE_FMT_NONE;
if (ff_frame_pool_get_audio_config(link->frame_pool,
&pool_channels, &pool_nb_samples,
&pool_format, &pool_align) < 0) {
return NULL;
}
if (pool_channels != channels || pool_nb_samples < nb_samples ||
pool_format != link->format || pool_align != BUFFER_ALIGN) {
ff_frame_pool_uninit((FFFramePool **)&link->frame_pool);
link->frame_pool = ff_frame_pool_audio_init(av_buffer_allocz, channels,
nb_samples, link->format, BUFFER_ALIGN);
if (!link->frame_pool)
return NULL;
}
}
frame = ff_frame_pool_get(link->frame_pool);
if (!frame)
return NULL;
frame->nb_samples = nb_samples;
frame->format = link->format;
av_frame_set_channels(frame, link->channels);
frame->nb_samples = nb_samples;
frame->channel_layout = link->channel_layout;
frame->sample_rate = link->sample_rate;
ret = av_frame_get_buffer(frame, 0);
if (ret < 0) {
av_frame_free(&frame);
return NULL;
}
av_samples_set_silence(frame->extended_data, 0, nb_samples, channels,
link->format);
frame->sample_rate = link->sample_rate;
av_samples_set_silence(frame->extended_data, 0, nb_samples, channels, link->format);
return frame;
}