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/*
* 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
*/
/*
* APIs internal to the generic codec layer.
*
* MUST NOT be included by individual encoders or decoders.
*/
#ifndef AVCODEC_AVCODEC_INTERNAL_H
#define AVCODEC_AVCODEC_INTERNAL_H
#include "libavutil/frame.h"
#include "packet.h"
struct AVCodecContext;
typedef struct SideDataMap {
enum AVPacketSideDataType packet;
enum AVFrameSideDataType frame;
} SideDataMap;
/**
* A map between packet and frame side data types.
* Terminated with an entry where packet=AV_PKT_DATA_NB.
*/
extern const SideDataMap ff_sd_global_map[];
/**
* avcodec_receive_frame() implementation for decoders.
*/
int ff_decode_receive_frame(struct AVCodecContext *avctx, struct AVFrame *frame);
/**
* avcodec_receive_frame() implementation for encoders.
*/
int ff_encode_receive_frame(struct AVCodecContext *avctx, struct AVFrame *frame);
/*
* Perform encoder initialization and validation.
* Called when opening the encoder, before the FFCodec.init() call.
*/
int ff_encode_preinit(struct AVCodecContext *avctx);
/**
* Perform decoder initialization and validation.
* Called when opening the decoder, before the FFCodec.init() call.
*/
int ff_decode_preinit(struct AVCodecContext *avctx);
void ff_decode_flush_buffers(struct AVCodecContext *avctx);
void ff_encode_flush_buffers(struct AVCodecContext *avctx);
struct AVCodecInternal *ff_decode_internal_alloc(void);
struct AVCodecInternal *ff_encode_internal_alloc(void);
void ff_codec_close(struct AVCodecContext *avctx);
int ff_thread_init(struct AVCodecContext *s);
void ff_thread_free(struct AVCodecContext *s);
/**
* Wait for decoding threads to finish and reset internal state.
* Called by avcodec_flush_buffers().
*
* @param avctx The context.
*/
void ff_thread_flush(struct AVCodecContext *avctx);
/**
* Submit available packets for decoding to worker threads, return a
* decoded frame if available. Returns AVERROR(EAGAIN) if none is available.
*
* Parameters are the same as FFCodec.receive_frame.
*/
int ff_thread_receive_frame(struct AVCodecContext *avctx, AVFrame *frame);
/**
* Do the actual decoding and obtain a decoded frame from the decoder, if
* available. When frame threading is used, this is invoked by the worker
* threads, otherwise by the top layer directly.
*/
int ff_decode_receive_frame_internal(struct AVCodecContext *avctx, AVFrame *frame);
/**
* Get a packet for decoding. This gets invoked by the worker threads.
*/
int ff_thread_get_packet(struct AVCodecContext *avctx, AVPacket *pkt);
#endif // AVCODEC_AVCODEC_INTERNAL_H
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