mirror of
https://github.com/FFmpeg/FFmpeg.git
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111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* APIs internal to the generic codec layer.
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*
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* MUST NOT be included by individual encoders or decoders.
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*/
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#ifndef AVCODEC_AVCODEC_INTERNAL_H
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#define AVCODEC_AVCODEC_INTERNAL_H
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#include "libavutil/frame.h"
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#include "packet.h"
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struct AVCodecContext;
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typedef struct SideDataMap {
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enum AVPacketSideDataType packet;
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enum AVFrameSideDataType frame;
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} SideDataMap;
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/**
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* A map between packet and frame side data types.
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* Terminated with an entry where packet=AV_PKT_DATA_NB.
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*/
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extern const SideDataMap ff_sd_global_map[];
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/**
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* avcodec_receive_frame() implementation for decoders.
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*/
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int ff_decode_receive_frame(struct AVCodecContext *avctx, struct AVFrame *frame);
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/**
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* avcodec_receive_frame() implementation for encoders.
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*/
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int ff_encode_receive_frame(struct AVCodecContext *avctx, struct AVFrame *frame);
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/*
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* Perform encoder initialization and validation.
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* Called when opening the encoder, before the FFCodec.init() call.
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*/
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int ff_encode_preinit(struct AVCodecContext *avctx);
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/**
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* Perform decoder initialization and validation.
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* Called when opening the decoder, before the FFCodec.init() call.
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*/
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int ff_decode_preinit(struct AVCodecContext *avctx);
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void ff_decode_flush_buffers(struct AVCodecContext *avctx);
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void ff_encode_flush_buffers(struct AVCodecContext *avctx);
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struct AVCodecInternal *ff_decode_internal_alloc(void);
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void ff_decode_internal_sync(struct AVCodecContext *dst,
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const struct AVCodecContext *src);
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void ff_decode_internal_uninit(struct AVCodecContext *avctx);
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struct AVCodecInternal *ff_encode_internal_alloc(void);
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void ff_codec_close(struct AVCodecContext *avctx);
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int ff_thread_init(struct AVCodecContext *s);
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void ff_thread_free(struct AVCodecContext *s);
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/**
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* Wait for decoding threads to finish and reset internal state.
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* Called by avcodec_flush_buffers().
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*
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* @param avctx The context.
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*/
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void ff_thread_flush(struct AVCodecContext *avctx);
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/**
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* Submit available packets for decoding to worker threads, return a
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* decoded frame if available. Returns AVERROR(EAGAIN) if none is available.
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*
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* Parameters are the same as FFCodec.receive_frame.
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*/
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int ff_thread_receive_frame(struct AVCodecContext *avctx, AVFrame *frame);
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/**
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* Do the actual decoding and obtain a decoded frame from the decoder, if
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* available. When frame threading is used, this is invoked by the worker
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* threads, otherwise by the top layer directly.
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*/
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int ff_decode_receive_frame_internal(struct AVCodecContext *avctx, AVFrame *frame);
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/**
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* Get a packet for decoding. This gets invoked by the worker threads.
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*/
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int ff_thread_get_packet(struct AVCodecContext *avctx, AVPacket *pkt);
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#endif // AVCODEC_AVCODEC_INTERNAL_H
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