/*
* 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 <stddef.h>
#include <stdint.h>
#include "buffer.h"
#include "frame.h"
#include "mem.h"
#include "video_enc_params.h"
AVVideoEncParams *av_video_enc_params_alloc(enum AVVideoEncParamsType type,
unsigned int nb_blocks, size_t *out_size)
{
struct TestStruct {
AVVideoEncParams p;
AVVideoBlockParams b;
};
const size_t blocks_offset = offsetof(struct TestStruct, b);
size_t size = blocks_offset;
AVVideoEncParams *par;
if (nb_blocks > (SIZE_MAX - size) / sizeof (AVVideoBlockParams))
return NULL;
size += sizeof (AVVideoBlockParams) * nb_blocks;
par = av_mallocz(size);
if (!par)
return NULL;
par->type = type;
par->nb_blocks = nb_blocks;
par->block_size = sizeof (AVVideoBlockParams);
par->blocks_offset = blocks_offset;
if (out_size)
*out_size = size;
return par;
}
AVVideoEncParams*
av_video_enc_params_create_side_data(AVFrame *frame, enum AVVideoEncParamsType type,
unsigned int nb_blocks)
{
AVBufferRef *buf;
AVVideoEncParams *par;
size_t size;
par = av_video_enc_params_alloc(type, nb_blocks, &size);
if (!par)
return NULL;
buf = av_buffer_create((uint8_t *)par, size, NULL, NULL, 0 );
if (!buf) {
av_freep(&par);
return NULL;
}
if (!av_frame_new_side_data_from_buf(frame, AV_FRAME_DATA_VIDEO_ENC_PARAMS, buf)) {
av_buffer_unref(&buf);
return NULL;
}
return par;
}
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