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🎥 Command line media player
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117/* * muxing using libavformat * * Copyright (C) 2011 Rudolf Polzer <divVerent@xonotic.org> * * This file is part of mpv. * * mpv 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. * * mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>. */
#ifndef MPLAYER_ENCODE_LAVC_H#define MPLAYER_ENCODE_LAVC_H
#include <libavcodec/avcodec.h>#include <libavformat/avformat.h>#include <libavutil/avstring.h>#include <libavutil/pixfmt.h>#include <libavutil/opt.h>#include <libavutil/mathematics.h>
#include "common/common.h"#include "encode.h"#include "osdep/threads.h"#include "video/csputils.h"
struct encode_lavc_context { // --- Immutable after init struct mpv_global *global; struct encode_opts *options; struct mp_log *log; struct encode_priv *priv; const AVOutputFormat *oformat; const char *filename;
// All entry points must be guarded with the lock. Functions called by // the playback core lock this automatically, but ao_lavc.c and vo_lavc.c // must lock manually before accessing state. mp_mutex lock;
// anti discontinuity mode double next_in_pts; double discontinuity_pts_offset;};
// --- interface for vo/ao drivers
// Static information after encoder init. This never changes (even if there are// dynamic runtime changes, they have to work over AVPacket side data).// For use in encoder_context, most fields are copied from encoder_context.encoder// by encoder_init_codec_and_muxer().struct encoder_stream_info { AVRational timebase; // timebase used by the encoder (in frames/out packets) AVCodecParameters *codecpar;};
// The encoder parts for each stream (no muxing parts included).// This is private to each stream.struct encoder_context { struct mpv_global *global; struct encode_opts *options; struct mp_log *log; const AVOutputFormat *oformat;
// (avoid using this) struct encode_lavc_context *encode_lavc_ctx;
enum stream_type type;
// (different access restrictions before/after encoder init) struct encoder_stream_info info; AVCodecContext *encoder; struct mux_stream *mux_stream;
// (essentially private) struct stream *twopass_bytebuffer; AVPacket *pkt;};
// Free with talloc_free(). (Keep in mind actual deinitialization requires// sending a flush packet.)// This can fail and return NULL.struct encoder_context *encoder_context_alloc(struct encode_lavc_context *ctx, enum stream_type type, struct mp_log *log);
// After setting your codec parameters on p->encoder, you call this to "open"// the encoder. This also initializes p->mux_stream. Returns false on failure.// on_ready is called as soon as the muxer has been initialized. Then you are// allowed to write packets with encoder_encode().// Warning: the on_ready callback is called asynchronously, so you need to// make sure to properly synchronize everything.bool encoder_init_codec_and_muxer(struct encoder_context *p, void (*on_ready)(void *ctx), void *ctx);
// Encode the frame and write the packet. frame is ref'ed as need.bool encoder_encode(struct encoder_context *p, AVFrame *frame);
// Return muxer timebase (only available after on_ready() has been called).// Caller needs to acquire encode_lavc_context.lock (or call it from on_ready).AVRational encoder_get_mux_timebase_unlocked(struct encoder_context *p);
void encoder_update_log(struct mpv_global *global);
#endif