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20f9727018
Up until now, codec.h contains both public and private parts of AVCodec. This exposes the internals of AVCodec to users and leads them into the temptation of actually using them and forces us to forward-declare structures and types that users can't use at all. This commit changes this by adding a new structure FFCodec to codec_internal.h that extends AVCodec, i.e. contains the public AVCodec as first member; the private fields of AVCodec are moved to this structure, leaving codec.h clean. Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*
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* generic encoding-related code
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*
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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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#ifndef AVCODEC_ENCODE_H
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#define AVCODEC_ENCODE_H
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#include "libavutil/frame.h"
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#include "avcodec.h"
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#include "packet.h"
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/**
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* Called by encoders to get the next frame for encoding.
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*
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* @param frame An empty frame to be filled with data.
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* @return 0 if a new reference has been successfully written to frame
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* AVERROR(EAGAIN) if no data is currently available
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* AVERROR_EOF if end of stream has been reached, so no more data
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* will be available
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*/
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int ff_encode_get_frame(AVCodecContext *avctx, AVFrame *frame);
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/**
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* Get a buffer for a packet. This is a wrapper around
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* AVCodecContext.get_encode_buffer() and should be used instead calling get_encode_buffer()
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* directly.
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*/
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int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags);
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/**
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* Check AVPacket size and allocate data.
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*
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* Encoders supporting FFCodec.encode2() can use this as a convenience to
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* obtain a big enough buffer for the encoded bitstream.
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*
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* @param avctx the AVCodecContext of the encoder
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* @param avpkt The AVPacket: on success, avpkt->data will point to a buffer
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* of size at least `size`; the packet will not be refcounted.
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* This packet must be initially blank.
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* @param size an upper bound of the size of the packet to encode
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* @return non negative on success, negative error code on failure
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*/
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int ff_alloc_packet(AVCodecContext *avctx, AVPacket *avpkt, int64_t size);
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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(AVCodecContext *avctx);
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#endif /* AVCODEC_ENCODE_H */
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