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/*
* Copyright Stefano Sabatini <stefasab gmail com>
* Copyright Anton Khirnov <anton khirnov net>
* Copyright Michael Niedermayer <michaelni gmx at>
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/audioconvert.h"
#include "libavutil/avassert.h"
#include "libavcodec/avcodec.h"
#include "avfilter.h"
#include "internal.h"
#include "avcodec.h"
void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
{
if (ptr->extended_data != ptr->data)
av_freep(&ptr->extended_data);
av_free(ptr->data[0]);
av_free(ptr);
}
AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
{
AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
if (!ret)
return NULL;
*ret = *ref;
if (ref->type == AVMEDIA_TYPE_VIDEO) {
ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
if (!ret->video) {
av_free(ret);
return NULL;
}
*ret->video = *ref->video;
ret->extended_data = ret->data;
} else if (ref->type == AVMEDIA_TYPE_AUDIO) {
ret->audio = av_malloc(sizeof(AVFilterBufferRefAudioProps));
if (!ret->audio) {
av_free(ret);
return NULL;
}
*ret->audio = *ref->audio;
if (ref->extended_data && ref->extended_data != ref->data) {
int nb_channels = av_get_channel_layout_nb_channels(ref->audio->channel_layout);
if (!(ret->extended_data = av_malloc(sizeof(*ret->extended_data) *
nb_channels))) {
av_freep(&ret->audio);
av_freep(&ret);
return NULL;
}
memcpy(ret->extended_data, ref->extended_data,
sizeof(*ret->extended_data) * nb_channels);
} else
ret->extended_data = ret->data;
}
ret->perms &= pmask;
ret->buf->refcount ++;
return ret;
}
void ff_free_pool(AVFilterPool *pool)
{
int i;
av_assert0(pool->refcount > 0);
for (i = 0; i < POOL_SIZE; i++) {
if (pool->pic[i]) {
AVFilterBufferRef *picref = pool->pic[i];
/* free buffer: picrefs stored in the pool are not
* supposed to contain a free callback */
av_assert0(!picref->buf->refcount);
av_freep(&picref->buf->data[0]);
av_freep(&picref->buf);
av_freep(&picref->audio);
av_freep(&picref->video);
av_freep(&pool->pic[i]);
pool->count--;
}
}
pool->draining = 1;
if (!--pool->refcount) {
av_assert0(!pool->count);
av_free(pool);
}
}
static void store_in_pool(AVFilterBufferRef *ref)
{
int i;
AVFilterPool *pool= ref->buf->priv;
av_assert0(ref->buf->data[0]);
av_assert0(pool->refcount>0);
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;
}
}
if (pool->draining) {
ff_free_pool(pool);
} else
--pool->refcount;
}
void avfilter_unref_buffer(AVFilterBufferRef *ref)
{
if (!ref)
return;
av_assert0(ref->buf->refcount > 0);
if (!(--ref->buf->refcount)) {
if (!ref->buf->free) {
store_in_pool(ref);
return;
}
ref->buf->free(ref->buf);
}
if (ref->extended_data != ref->data)
av_freep(&ref->extended_data);
av_freep(&ref->video);
av_freep(&ref->audio);
av_free(ref);
}
void avfilter_unref_bufferp(AVFilterBufferRef **ref)
{
avfilter_unref_buffer(*ref);
*ref = NULL;
}
int avfilter_copy_buf_props(AVFrame *dst, const AVFilterBufferRef *src)
{
int planes, nb_channels;
memcpy(dst->data, src->data, sizeof(dst->data));
memcpy(dst->linesize, src->linesize, sizeof(dst->linesize));
dst->pts = src->pts;
dst->format = src->format;
switch (src->type) {
case AVMEDIA_TYPE_VIDEO:
dst->width = src->video->w;
dst->height = src->video->h;
dst->sample_aspect_ratio = src->video->sample_aspect_ratio;
dst->interlaced_frame = src->video->interlaced;
dst->top_field_first = src->video->top_field_first;
dst->key_frame = src->video->key_frame;
dst->pict_type = src->video->pict_type;
break;
case AVMEDIA_TYPE_AUDIO:
nb_channels = av_get_channel_layout_nb_channels(src->audio->channel_layout);
planes = av_sample_fmt_is_planar(src->format) ? nb_channels : 1;
if (planes > FF_ARRAY_ELEMS(dst->data)) {
dst->extended_data = av_mallocz(planes * sizeof(*dst->extended_data));
if (!dst->extended_data)
return AVERROR(ENOMEM);
memcpy(dst->extended_data, src->extended_data,
planes * sizeof(dst->extended_data));
} else
dst->extended_data = dst->data;
dst->sample_rate = src->audio->sample_rate;
dst->channel_layout = src->audio->channel_layout;
dst->nb_samples = src->audio->nb_samples;
break;
default:
return AVERROR(EINVAL);
}
return 0;
}
void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, AVFilterBufferRef *src)
{
// copy common properties
dst->pts = src->pts;
dst->pos = src->pos;
switch (src->type) {
case AVMEDIA_TYPE_VIDEO: *dst->video = *src->video; break;
case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
default: break;
}
}
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