mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-24 03:39:45 +00:00
80 lines
2.7 KiB
C
80 lines
2.7 KiB
C
/*
|
|
* generic decoding-related code
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#ifndef AVCODEC_DECODE_H
|
|
#define AVCODEC_DECODE_H
|
|
|
|
#include "libavutil/buffer.h"
|
|
#include "libavutil/frame.h"
|
|
#include "libavutil/hwcontext.h"
|
|
|
|
#include "avcodec.h"
|
|
|
|
/**
|
|
* This struct stores per-frame lavc-internal data and is attached to it via
|
|
* private_ref.
|
|
*/
|
|
typedef struct FrameDecodeData {
|
|
/**
|
|
* The callback to perform some delayed processing on the frame right
|
|
* before it is returned to the caller.
|
|
*
|
|
* @note This code is called at some unspecified point after the frame is
|
|
* returned from the decoder's decode/receive_frame call. Therefore it cannot rely
|
|
* on AVCodecContext being in any specific state, so it does not get to
|
|
* access AVCodecContext directly at all. All the state it needs must be
|
|
* stored in the post_process_opaque object.
|
|
*/
|
|
int (*post_process)(void *logctx, AVFrame *frame);
|
|
void *post_process_opaque;
|
|
void (*post_process_opaque_free)(void *opaque);
|
|
|
|
/**
|
|
* Per-frame private data for hwaccels.
|
|
*/
|
|
void *hwaccel_priv;
|
|
void (*hwaccel_priv_free)(void *priv);
|
|
} 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);
|
|
|
|
/**
|
|
* Make sure avctx.hw_frames_ctx is set. If it's not set, the function will
|
|
* try to allocate it from hw_device_ctx. If that is not possible, an error
|
|
* message is printed, and an error code is returned.
|
|
*/
|
|
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx,
|
|
enum AVHWDeviceType dev_type);
|
|
|
|
int ff_attach_decode_data(AVFrame *frame);
|
|
|
|
#endif /* AVCODEC_DECODE_H */
|