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/*
Copyright (C) 2020 by Morten Bøgeskov <source@kosmisk.dk>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/pixfmt.h>
/**
* Data structure for decoder
*/
struct v4l2_decoder {
const AVCodec *codec;
AVCodecContext *context;
AVPacket *packet;
AVFrame *frame;
};
/**
* Initialize the decoder.
* The decoder must be destroyed on failure.
*
* @param decoder the decoder structure
* @param pixfmt which codec is used
* @return non-zero on failure
*/
int v4l2_init_decoder(struct v4l2_decoder *decoder, int pixfmt);
/**
* Free any data associated with the decoder.
*
* @param decoder the decoder structure
*/
void v4l2_destroy_decoder(struct v4l2_decoder *decoder);
/**
* Decode a jpeg or h264 frame into an obs frame
*
* @param out the obs frame to decode into
* @param data the codec data
* @param length length of the data
* @param decoder the decoder as initialized by v4l2_init_decoder
* @return non-zero on failure
*/
int v4l2_decode_frame(struct obs_source_frame *out, uint8_t *data,
size_t length, struct v4l2_decoder *decoder);
#ifdef __cplusplus
}
#endif
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