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AVFilter: use picture pool to avoid malloc().

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2011-05-06 23:53:06 +02:00
parent fa3eddc011
commit 39f66edbea
4 changed files with 71 additions and 2 deletions
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43
libavfilter/avfilter.c
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@@ -25,6 +25,7 @@
#include "libavutil/rational.h"
#include "libavutil/audioconvert.h"
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "avfilter.h"
#include "internal.h"
@@ -69,12 +70,50 @@ AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
return ret;
}
static void store_in_pool(AVFilterBufferRef *ref)
{
int i;
AVFilterLink *link= ref->buf->priv;
AVFilterPool *pool;
av_assert0(ref->buf->data[0]);
if(!link->pool)
link->pool = av_mallocz(sizeof(AVFilterPool));
pool= link->pool;
if(pool->count == POOL_SIZE){
AVFilterBufferRef *ref1= pool->pic[0];
av_freep(&ref1->video);
av_freep(&ref1->audio);
av_freep(&ref1->buf->data[0]);
av_freep(&ref1->buf);
av_free(ref1);
memmove(&pool->pic[0], &pool->pic[1], sizeof(void*)*(POOL_SIZE-1));
pool->count--;
pool->pic[POOL_SIZE-1] = NULL;
}
for(i=0; i<POOL_SIZE; i++){
if(!pool->pic[i]){
pool->pic[i]= ref;
pool->count++;
break;
}
}
}
void avfilter_unref_buffer(AVFilterBufferRef *ref)
{
if (!ref)
return;
if (!(--ref->buf->refcount))
if (!(--ref->buf->refcount)){
if(!ref->buf->free){
store_in_pool(ref);
return;
}
ref->buf->free(ref->buf);
}
av_freep(&ref->video);
av_freep(&ref->audio);
av_free(ref);
@@ -646,6 +685,7 @@ void avfilter_free(AVFilterContext *filter)
if ((link = filter->inputs[i])) {
if (link->src)
link->src->outputs[link->srcpad - link->src->output_pads] = NULL;
av_freep(&link->pool);
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
}
@@ -655,6 +695,7 @@ void avfilter_free(AVFilterContext *filter)
if ((link = filter->outputs[i])) {
if (link->dst)
link->dst->inputs[link->dstpad - link->dst->input_pads] = NULL;
av_freep(&link->pool);
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
}