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/*
* 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);
#endif
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