FFmpeg/libavcodec/decode.h
Anton Khirnov 359a8a3e2d decode: add a method for attaching lavc-internal data to frames
Use the AVFrame.opaque_ref field. The original user's opaque_ref is
wrapped in the lavc struct and then unwrapped before the frame is
returned to the caller.

This new struct will be useful in the following commits.
2017-07-26 23:23:58 +02:00

53 lines
1.6 KiB
C

/*
* generic decoding-related code
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_DECODE_H
#define AVCODEC_DECODE_H
#include "libavutil/buffer.h"
#include "avcodec.h"
/**
* This struct stores per-frame lavc-internal data and is attached to it via
* opaque_ref.
*/
typedef struct FrameDecodeData {
/**
* The original user-set opaque_ref.
*/
AVBufferRef *user_opaque_ref;
} FrameDecodeData;
/**
* Called by decoders to get the next packet for decoding.
*
* @param pkt An empty packet to be filled with data.
* @return 0 if a new reference has been successfully written to pkt
* AVERROR(EAGAIN) if no data is currently available
* AVERROR_EOF if and end of stream has been reached, so no more data
* will be available
*/
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt);
void ff_decode_bsfs_uninit(AVCodecContext *avctx);
#endif /* AVCODEC_DECODE_H */