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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/channel_layout.h"
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavcodec/avcodec.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"
#include "avcodec.h"
#include "version.h"
#if FF_API_AVFILTERBUFFER
void ff_avfilter_default_free_buffer(AVFilterBuffer *ptr)
{
if (ptr->extended_data != ptr->data)
av_freep(&ptr->extended_data);
av_freep(&ptr->data[0]);
av_free(ptr);
}
static int copy_video_props(AVFilterBufferRefVideoProps *dst, AVFilterBufferRefVideoProps *src) {
*dst = *src;
if (src->qp_table) {
int qsize = src->qp_table_size;
dst->qp_table = av_malloc(qsize);
if (!dst->qp_table) {
av_log(NULL, AV_LOG_ERROR, "Failed to allocate qp_table\n");
dst->qp_table_size = 0;
return AVERROR(ENOMEM);
}
memcpy(dst->qp_table, src->qp_table, qsize);
}
return 0;
}
AVFilterBufferRef *avfilter_ref_buffer(AVFilterBufferRef *ref, int pmask)
{
AVFilterBufferRef *ret = av_malloc(sizeof(AVFilterBufferRef));
if (!ret)
return NULL;
*ret = *ref;
ret->metadata = NULL;
av_dict_copy(&ret->metadata, ref->metadata, 0);
if (ref->type == AVMEDIA_TYPE_VIDEO) {
ret->video = av_malloc(sizeof(AVFilterBufferRefVideoProps));
if (!ret->video) {
av_free(ret);
return NULL;
}
copy_video_props(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_array(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 avfilter_unref_buffer(AVFilterBufferRef *ref)
{
if (!ref)
return;
av_assert0(ref->buf->refcount > 0);
if (!(--ref->buf->refcount))
ref->buf->free(ref->buf);
if (ref->extended_data != ref->data)
av_freep(&ref->extended_data);
if (ref->video)
av_freep(&ref->video->qp_table);
av_freep(&ref->video);
av_freep(&ref->audio);
av_dict_free(&ref->metadata);
av_free(ref);
}
void avfilter_unref_bufferp(AVFilterBufferRef **ref)
{
FF_DISABLE_DEPRECATION_WARNINGS
avfilter_unref_buffer(*ref);
FF_ENABLE_DEPRECATION_WARNINGS
*ref = NULL;
}
int avfilter_copy_frame_props(AVFilterBufferRef *dst, const AVFrame *src)
{
dst->pts = src->pts;
dst->pos = av_frame_get_pkt_pos(src);
dst->format = src->format;
av_dict_free(&dst->metadata);
av_dict_copy(&dst->metadata, av_frame_get_metadata(src), 0);
switch (dst->type) {
case AVMEDIA_TYPE_VIDEO:
dst->video->w = src->width;
dst->video->h = src->height;
dst->video->sample_aspect_ratio = src->sample_aspect_ratio;
dst->video->interlaced = src->interlaced_frame;
dst->video->top_field_first = src->top_field_first;
dst->video->key_frame = src->key_frame;
dst->video->pict_type = src->pict_type;
break;
case AVMEDIA_TYPE_AUDIO:
dst->audio->sample_rate = src->sample_rate;
dst->audio->channel_layout = src->channel_layout;
break;
default:
return AVERROR(EINVAL);
}
return 0;
}
void avfilter_copy_buffer_ref_props(AVFilterBufferRef *dst, const AVFilterBufferRef *src)
{
// copy common properties
dst->pts = src->pts;
dst->pos = src->pos;
switch (src->type) {
case AVMEDIA_TYPE_VIDEO: {
if (dst->video->qp_table)
av_freep(&dst->video->qp_table);
copy_video_props(dst->video, src->video);
break;
}
case AVMEDIA_TYPE_AUDIO: *dst->audio = *src->audio; break;
default: break;
}
av_dict_free(&dst->metadata);
av_dict_copy(&dst->metadata, src->metadata, 0);
}
#endif /* FF_API_AVFILTERBUFFER */
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