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mpv/common/encode_lavc.c
wm4 7783f0b7d7 client API: more or less deprecate mpv_set_option() 
With the merging of options and properties, the mpv_set_option()
function is close to being useless, and mpv_set_property() can be used
for everything instead. There are certain conflicts remaining, which are
explained in depth in the docs. For now, none of this should affect
existing code using the client API.

Make mpv_set_property() redirect to mpv_set_option() before
initialization.

Remove some options marked as M_OPT_FIXED. The "pause" and "speed"
options cannot be written anymore without the playloop being notified by
it, so the M_OPT_FIXED does nothing. For "vo-mmcss-profile", the problem
was lack of synchronization, which has been added. I'm not sure what the
problem was with "frames" - I think it was only marked as M_OPT_FIXED
because changing it during playback will have no effect. Except for
pause/speed, these changes are needed to make them writable as
properties after mpv_initialize().

Also replace all remaining uses of CONF_GLOBAL with M_OPT_FIXED.
2016-09-21 17:35:00 +02:00

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/*
* muxing using libavformat
* Copyright (C) 2010 Nicolas George <george@nsup.org>
* Copyright (C) 2011-2012 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 General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libavutil/avutil.h>
#include "config.h"
#include "encode_lavc.h"
#include "common/global.h"
#include "common/msg.h"
#include "common/msg_control.h"
#include "options/m_option.h"
#include "options/options.h"
#include "osdep/timer.h"
#include "video/out/vo.h"
#include "mpv_talloc.h"
#include "stream/stream.h"
#define OPT_BASE_STRUCT struct encode_opts
const struct m_sub_options encode_config = {
.opts = (const m_option_t[]) {
OPT_STRING("o", file, M_OPT_FIXED | CONF_NOCFG | CONF_PRE_PARSE),
OPT_STRING("of", format, M_OPT_FIXED),
OPT_STRINGLIST("ofopts*", fopts, M_OPT_FIXED),
OPT_FLOATRANGE("ofps", fps, M_OPT_FIXED, 0.0, 1000000.0),
OPT_FLOATRANGE("omaxfps", maxfps, M_OPT_FIXED, 0.0, 1000000.0),
OPT_STRING("ovc", vcodec, M_OPT_FIXED),
OPT_STRINGLIST("ovcopts*", vopts, M_OPT_FIXED),
OPT_STRING("oac", acodec, M_OPT_FIXED),
OPT_STRINGLIST("oacopts*", aopts, M_OPT_FIXED),
OPT_FLAG("oharddup", harddup, M_OPT_FIXED),
OPT_FLOATRANGE("ovoffset", voffset, M_OPT_FIXED, -1000000.0, 1000000.0),
OPT_FLOATRANGE("oaoffset", aoffset, M_OPT_FIXED, -1000000.0, 1000000.0),
OPT_FLAG("ocopyts", copyts, M_OPT_FIXED),
OPT_FLAG("orawts", rawts, M_OPT_FIXED),
OPT_FLAG("oautofps", autofps, M_OPT_FIXED),
OPT_FLAG("oneverdrop", neverdrop, M_OPT_FIXED),
OPT_FLAG("ovfirst", video_first, M_OPT_FIXED),
OPT_FLAG("oafirst", audio_first, M_OPT_FIXED),
OPT_FLAG("ometadata", metadata, M_OPT_FIXED),
{0}
},
.size = sizeof(struct encode_opts),
.defaults = &(const struct encode_opts){
.metadata = 1,
},
};
static int set_to_avdictionary(struct encode_lavc_context *ctx,
AVDictionary **dictp,
const char *key,
const char *val)
{
char keybuf[1024];
char valuebuf[1024];
if (key == NULL) {
// we need to split at equals sign
const char *equals = strchr(val, '=');
if (!equals || equals - val >= sizeof(keybuf)) {
MP_WARN(ctx, "option '%s' does not contain an equals sign\n",
val);
return 0;
}
memcpy(keybuf, val, equals - val);
keybuf[equals - val] = 0;
key = keybuf;
val = equals + 1;
}
// hack: support "qscale" key as virtual "global_quality" key that multiplies by QP2LAMBDA
if (!strcmp(key, "qscale")) {
key = "global_quality";
snprintf(valuebuf, sizeof(valuebuf),
"%.1s(%s)*QP2LAMBDA",
(val[0] == '+' || val[0] == '-') ? val : "",
(val[0] == '+' || val[0] == '-') ? val + 1 : val);
valuebuf[sizeof(valuebuf) - 1] = 0;
val = valuebuf;
}
MP_VERBOSE(ctx, "setting value '%s' for key '%s'\n",
val, key);
if (av_dict_set(dictp, key, *val ? val : NULL,
(val[0] == '+' || val[0] == '-') ? AV_DICT_APPEND : 0) >= 0)
return 1;
return 0;
}
static bool value_has_flag(const char *value, const char *flag)
{
bool state = true;
bool ret = false;
while (*value) {
size_t l = strcspn(value, "+-");
if (l == 0) {
state = (*value == '+');
++value;
} else {
if (l == strlen(flag))
if (!memcmp(value, flag, l))
ret = state;
value += l;
}
}
return ret;
}
#define CHECK_FAIL(ctx, val) \
if (ctx && (ctx->failed || ctx->finished)) { \
MP_ERR(ctx, \
"Called a function on a %s encoding context. Bailing out.\n", \
ctx->failed ? "failed" : "finished"); \
return val; \
}
#define CHECK_FAIL_UNLOCK(ctx, val) \
if (ctx && (ctx->failed || ctx->finished)) { \
MP_ERR(ctx, \
"Called a function on a %s encoding context. Bailing out.\n", \
ctx->failed ? "failed" : "finished"); \
pthread_mutex_unlock(&ctx->lock); \
return val; \
}
int encode_lavc_available(struct encode_lavc_context *ctx)
{
CHECK_FAIL(ctx, 0);
return ctx && ctx->avc;
}
int encode_lavc_oformat_flags(struct encode_lavc_context *ctx)
{
CHECK_FAIL(ctx, 0);
return ctx->avc ? ctx->avc->oformat->flags : 0;
}
struct encode_lavc_context *encode_lavc_init(struct encode_opts *options,
struct mpv_global *global)
{
struct encode_lavc_context *ctx;
const char *filename = options->file;
// STUPID STUPID STUPID STUPID avio
// does not support "-" as file name to mean stdin/stdout
// ffmpeg.c works around this too, the same way
if (!strcmp(filename, "-"))
filename = "pipe:1";
if (filename && (
!strcmp(filename, "/dev/stdout") ||
!strcmp(filename, "pipe:") ||
!strcmp(filename, "pipe:1")))
mp_msg_force_stderr(global, true);
ctx = talloc_zero(NULL, struct encode_lavc_context);
pthread_mutex_init(&ctx->lock, NULL);
ctx->log = mp_log_new(ctx, global->log, "encode-lavc");
ctx->global = global;
encode_lavc_discontinuity(ctx);
ctx->options = options;
ctx->avc = avformat_alloc_context();
if (ctx->options->format) {
char *tok;
const char *in = ctx->options->format;
while (*in) {
tok = av_get_token(&in, ",");
ctx->avc->oformat = av_guess_format(tok, filename, NULL);
av_free(tok);
if (ctx->avc->oformat)
break;
if (*in)
++in;
}
} else
ctx->avc->oformat = av_guess_format(NULL, filename, NULL);
if (!ctx->avc->oformat) {
encode_lavc_fail(ctx, "format not found\n");
return NULL;
}
av_strlcpy(ctx->avc->filename, filename,
sizeof(ctx->avc->filename));
ctx->foptions = NULL;
if (ctx->options->fopts) {
char **p;
for (p = ctx->options->fopts; *p; ++p) {
if (!set_to_avdictionary(ctx, &ctx->foptions, NULL, *p))
MP_WARN(ctx, "could not set option %s\n", *p);
}
}
if (ctx->options->vcodec) {
char *tok;
const char *in = ctx->options->vcodec;
while (*in) {
tok = av_get_token(&in, ",");
ctx->vc = avcodec_find_encoder_by_name(tok);
av_free(tok);
if (ctx->vc && ctx->vc->type != AVMEDIA_TYPE_VIDEO)
ctx->vc = NULL;
if (ctx->vc)
break;
if (*in)
++in;
}
} else
ctx->vc = avcodec_find_encoder(av_guess_codec(ctx->avc->oformat, NULL,
ctx->avc->filename, NULL,
AVMEDIA_TYPE_VIDEO));
if (ctx->options->acodec) {
char *tok;
const char *in = ctx->options->acodec;
while (*in) {
tok = av_get_token(&in, ",");
ctx->ac = avcodec_find_encoder_by_name(tok);
av_free(tok);
if (ctx->ac && ctx->ac->type != AVMEDIA_TYPE_AUDIO)
ctx->ac = NULL;
if (ctx->ac)
break;
if (*in)
++in;
}
} else
ctx->ac = avcodec_find_encoder(av_guess_codec(ctx->avc->oformat, NULL,
ctx->avc->filename, NULL,
AVMEDIA_TYPE_AUDIO));
if (!ctx->vc && !ctx->ac) {
encode_lavc_fail(
ctx, "neither audio nor video codec was found\n");
return NULL;
}
/* taken from ffmpeg unchanged
* TODO turn this into an option if anyone needs this */
ctx->avc->max_delay = 0.7 * AV_TIME_BASE;
ctx->abytes = 0;
ctx->vbytes = 0;
ctx->frames = 0;
if (options->video_first)
ctx->video_first = true;
if (options->audio_first)
ctx->audio_first = true;
return ctx;
}
void encode_lavc_set_metadata(struct encode_lavc_context *ctx,
struct mp_tags *metadata)
{
if (ctx->options->metadata)
ctx->metadata = metadata;
}
int encode_lavc_start(struct encode_lavc_context *ctx)
{
AVDictionaryEntry *de;
if (ctx->header_written < 0)
return 0;
if (ctx->header_written > 0)
return 1;
CHECK_FAIL(ctx, 0);
if (ctx->expect_video && ctx->vcc == NULL) {
if (ctx->avc->oformat->video_codec != AV_CODEC_ID_NONE ||
ctx->options->vcodec) {
encode_lavc_fail(ctx,
"no video stream succeeded - invalid codec?\n");
return 0;
}
}
if (ctx->expect_audio && ctx->acc == NULL) {
if (ctx->avc->oformat->audio_codec != AV_CODEC_ID_NONE ||
ctx->options->acodec) {
encode_lavc_fail(ctx,
"no audio stream succeeded - invalid codec?\n");
return 0;
}
}
ctx->header_written = -1;
if (!(ctx->avc->oformat->flags & AVFMT_NOFILE)) {
MP_INFO(ctx, "Opening output file: %s\n",
ctx->avc->filename);
if (avio_open(&ctx->avc->pb, ctx->avc->filename,
AVIO_FLAG_WRITE) < 0) {
encode_lavc_fail(ctx, "could not open '%s'\n",
ctx->avc->filename);
return 0;
}
}
ctx->t0 = mp_time_sec();
MP_INFO(ctx, "Opening muxer: %s [%s]\n",
ctx->avc->oformat->long_name, ctx->avc->oformat->name);
if (ctx->metadata) {
for (int i = 0; i < ctx->metadata->num_keys; i++) {
av_dict_set(&ctx->avc->metadata,
ctx->metadata->keys[i], ctx->metadata->values[i], 0);
}
}
if (avformat_write_header(ctx->avc, &ctx->foptions) < 0) {
encode_lavc_fail(ctx, "could not write header\n");
return 0;
}
for (de = NULL; (de = av_dict_get(ctx->foptions, "", de,
AV_DICT_IGNORE_SUFFIX));)
MP_WARN(ctx, "ofopts: key '%s' not found.\n", de->key);
av_dict_free(&ctx->foptions);
ctx->header_written = 1;
return 1;
}
void encode_lavc_free(struct encode_lavc_context *ctx)
{
if (!ctx)
return;
if (!ctx->finished)
encode_lavc_fail(ctx,
"called encode_lavc_free without encode_lavc_finish\n");
pthread_mutex_destroy(&ctx->lock);
talloc_free(ctx);
}
void encode_lavc_finish(struct encode_lavc_context *ctx)
{
unsigned i;
if (!ctx)
return;
if (ctx->finished)
return;
if (ctx->avc) {
if (ctx->header_written > 0)
av_write_trailer(ctx->avc); // this is allowed to fail
if (ctx->vcc) {
if (ctx->twopass_bytebuffer_v) {
char *stats = ctx->vcc->stats_out;
if (stats)
stream_write_buffer(ctx->twopass_bytebuffer_v,
stats, strlen(stats));
}
avcodec_close(ctx->vcc);
talloc_free(ctx->vcc->stats_in);
av_free(ctx->vcc);
ctx->vcc = NULL;
}
if (ctx->acc) {
if (ctx->twopass_bytebuffer_a) {
char *stats = ctx->acc->stats_out;
if (stats)
stream_write_buffer(ctx->twopass_bytebuffer_a,
stats, strlen(stats));
}
avcodec_close(ctx->acc);
talloc_free(ctx->acc->stats_in);
av_free(ctx->acc);
ctx->acc = NULL;
}
for (i = 0; i < ctx->avc->nb_streams; i++) {
av_free(ctx->avc->streams[i]->info);
av_free(ctx->avc->streams[i]);
}
ctx->vst = NULL;
ctx->ast = NULL;
if (ctx->twopass_bytebuffer_v) {
free_stream(ctx->twopass_bytebuffer_v);
ctx->twopass_bytebuffer_v = NULL;
}
if (ctx->twopass_bytebuffer_a) {
free_stream(ctx->twopass_bytebuffer_a);
ctx->twopass_bytebuffer_a = NULL;
}
MP_INFO(ctx, "vo-lavc: encoded %lld bytes\n",
ctx->vbytes);
MP_INFO(ctx, "ao-lavc: encoded %lld bytes\n",
ctx->abytes);
if (ctx->avc->pb) {
MP_INFO(ctx, "muxing overhead %lld bytes\n",
(long long) (avio_size(ctx->avc->pb) - ctx->vbytes
- ctx->abytes));
avio_close(ctx->avc->pb);
}
av_free(ctx->avc);
ctx->avc = NULL;
}
ctx->finished = true;
}
void encode_lavc_set_video_fps(struct encode_lavc_context *ctx, float fps)
{
pthread_mutex_lock(&ctx->lock);
ctx->vo_fps = fps;
pthread_mutex_unlock(&ctx->lock);
}
void encode_lavc_set_audio_pts(struct encode_lavc_context *ctx, double pts)
{
if (ctx) {
pthread_mutex_lock(&ctx->lock);
ctx->last_audio_in_pts = pts;
ctx->samples_since_last_pts = 0;
pthread_mutex_unlock(&ctx->lock);
}
}
static void encode_2pass_prepare(struct encode_lavc_context *ctx,
AVDictionary **dictp,
AVStream *stream,
AVCodecContext *codec,
struct stream **bytebuf,
const char *prefix)
{
if (!*bytebuf) {
char buf[sizeof(ctx->avc->filename) + 12];
AVDictionaryEntry *de = av_dict_get(ctx->voptions, "flags", NULL, 0);
snprintf(buf, sizeof(buf), "%s-%s-pass1.log", ctx->avc->filename,
prefix);
buf[sizeof(buf) - 1] = 0;
if (value_has_flag(de ? de->value : "", "pass2")) {
if (!(*bytebuf = stream_open(buf, ctx->global))) {
MP_WARN(ctx, "%s: could not open '%s', "
"disabling 2-pass encoding at pass 2\n", prefix, buf);
codec->flags &= ~CODEC_FLAG_PASS2;
set_to_avdictionary(ctx, dictp, "flags", "-pass2");
} else {
struct bstr content = stream_read_complete(*bytebuf, NULL,
1000000000);
if (content.start == NULL) {
MP_WARN(ctx, "%s: could not read '%s', "
"disabling 2-pass encoding at pass 1\n",
prefix, ctx->avc->filename);
} else {
content.start[content.len] = 0;
codec->stats_in = content.start;
}
free_stream(*bytebuf);
*bytebuf = NULL;
}
}
if (value_has_flag(de ? de->value : "", "pass1")) {
if (!(*bytebuf = open_output_stream(buf, ctx->global))) {
MP_WARN(ctx,
"%s: could not open '%s', disabling "
"2-pass encoding at pass 1\n",
prefix, ctx->avc->filename);
set_to_avdictionary(ctx, dictp, "flags", "-pass1");
}
}
}
}
int encode_lavc_alloc_stream(struct encode_lavc_context *ctx,
enum AVMediaType mt,
AVStream **stream_out,
AVCodecContext **codec_out)
{
AVDictionaryEntry *de;
char **p;
*stream_out = NULL;
*codec_out = NULL;
CHECK_FAIL(ctx, -1);
if (ctx->header_written)
return -1;
if (ctx->avc->nb_streams == 0) {
// if this stream isn't stream #0, allocate a dummy stream first for
// the next call to use
if (mt == AVMEDIA_TYPE_VIDEO && ctx->audio_first) {
MP_INFO(ctx, "vo-lavc: preallocated audio stream for later use\n");
ctx->ast = avformat_new_stream(
ctx->avc, NULL); // this one is AVMEDIA_TYPE_UNKNOWN for now
}
if (mt == AVMEDIA_TYPE_AUDIO && ctx->video_first) {
MP_INFO(ctx, "ao-lavc: preallocated video stream for later use\n");
ctx->vst = avformat_new_stream(
ctx->avc, NULL); // this one is AVMEDIA_TYPE_UNKNOWN for now
}
}
// already have a stream of that type (this cannot really happen)?
switch (mt) {
case AVMEDIA_TYPE_VIDEO:
if (ctx->vcc != NULL)
return -1;
if (ctx->vst == NULL)
ctx->vst = avformat_new_stream(ctx->avc, NULL);
break;
case AVMEDIA_TYPE_AUDIO:
if (ctx->acc != NULL)
return -1;
if (ctx->ast == NULL)
ctx->ast = avformat_new_stream(ctx->avc, NULL);
break;
default:
encode_lavc_fail(ctx, "requested invalid stream type\n");
return -1;
}
if (ctx->timebase.den == 0) {
AVRational r;
if (ctx->options->fps > 0)
r = av_d2q(ctx->options->fps, ctx->options->fps * 1001 + 2);
else if (ctx->options->autofps && ctx->vo_fps > 0) {
r = av_d2q(ctx->vo_fps, ctx->vo_fps * 1001 + 2);
MP_INFO(ctx, "option --ofps not specified "
"but --oautofps is active, using guess of %u/%u\n",
(unsigned)r.num, (unsigned)r.den);
} else {
// we want to handle:
// 1/25
// 1001/24000
// 1001/30000
// for this we would need 120000fps...
// however, mpeg-4 only allows 16bit values
// so let's take 1001/30000 out
r.num = 24000;
r.den = 1;
MP_INFO(ctx, "option --ofps not specified "
"and fps could not be inferred, using guess of %u/%u\n",
(unsigned)r.num, (unsigned)r.den);
}
if (ctx->vc && ctx->vc->supported_framerates)
r = ctx->vc->supported_framerates[av_find_nearest_q_idx(r,
ctx->vc->supported_framerates)];
ctx->timebase.num = r.den;
ctx->timebase.den = r.num;
}
switch (mt) {
case AVMEDIA_TYPE_VIDEO:
if (!ctx->vc) {
if (ctx->avc->oformat->video_codec != AV_CODEC_ID_NONE ||
ctx->options->vcodec) {
encode_lavc_fail(ctx, "vo-lavc: encoder not found\n");
}
return -1;
}
#if HAVE_AVCODEC_HAS_CODECPAR
ctx->vcc = avcodec_alloc_context3(ctx->vc);
#else
avcodec_get_context_defaults3(ctx->vst->codec, ctx->vc);
ctx->vcc = ctx->vst->codec;
#endif
// Using codec->time_base is deprecated, but needed for older lavf.
ctx->vst->time_base = ctx->timebase;
ctx->vcc->time_base = ctx->timebase;
ctx->voptions = NULL;
if (ctx->options->vopts)
for (p = ctx->options->vopts; *p; ++p)
if (!set_to_avdictionary(ctx, &ctx->voptions, NULL, *p))
MP_WARN(ctx, "vo-lavc: could not set option %s\n", *p);
de = av_dict_get(ctx->voptions, "global_quality", NULL, 0);
if (de)
set_to_avdictionary(ctx, &ctx->voptions, "flags", "+qscale");
if (ctx->avc->oformat->flags & AVFMT_GLOBALHEADER)
set_to_avdictionary(ctx, &ctx->voptions, "flags", "+global_header");
encode_2pass_prepare(ctx, &ctx->voptions, ctx->vst, ctx->vcc,
&ctx->twopass_bytebuffer_v,
"vo-lavc");
*stream_out = ctx->vst;
*codec_out = ctx->vcc;
return 0;
case AVMEDIA_TYPE_AUDIO:
if (!ctx->ac) {
if (ctx->avc->oformat->audio_codec != AV_CODEC_ID_NONE ||
ctx->options->acodec) {
encode_lavc_fail(ctx, "ao-lavc: encoder not found\n");
}
return -1;
}
#if HAVE_AVCODEC_HAS_CODECPAR
ctx->acc = avcodec_alloc_context3(ctx->ac);
#else
avcodec_get_context_defaults3(ctx->ast->codec, ctx->ac);
ctx->acc = ctx->ast->codec;
#endif
// Using codec->time_base is deprecated, but needed for older lavf.
ctx->ast->time_base = ctx->timebase;
ctx->acc->time_base = ctx->timebase;
ctx->aoptions = 0;
if (ctx->options->aopts)
for (p = ctx->options->aopts; *p; ++p)
if (!set_to_avdictionary(ctx, &ctx->aoptions, NULL, *p))
MP_WARN(ctx, "ao-lavc: could not set option %s\n", *p);
de = av_dict_get(ctx->aoptions, "global_quality", NULL, 0);
if (de)
set_to_avdictionary(ctx, &ctx->aoptions, "flags", "+qscale");
if (ctx->avc->oformat->flags & AVFMT_GLOBALHEADER)
set_to_avdictionary(ctx, &ctx->aoptions, "flags", "+global_header");
encode_2pass_prepare(ctx, &ctx->aoptions, ctx->ast, ctx->acc,
&ctx->twopass_bytebuffer_a,
"ao-lavc");
*stream_out = ctx->ast;
*codec_out = ctx->acc;
return 0;
}
// Unreachable.
return -1;
}
int encode_lavc_open_codec(struct encode_lavc_context *ctx,
AVCodecContext *codec)
{
AVDictionaryEntry *de;
int ret;
CHECK_FAIL(ctx, -1);
switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
MP_INFO(ctx, "Opening video encoder: %s [%s]\n",
ctx->vc->long_name, ctx->vc->name);
if (ctx->vc->capabilities & CODEC_CAP_EXPERIMENTAL) {
codec->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
MP_WARN(ctx, "\n\n"
" ********************************************\n"
" **** Experimental VIDEO codec selected! ****\n"
" ********************************************\n\n"
"This means the output file may be broken or bad.\n"
"Possible reasons, problems, workarounds:\n"
"- Codec implementation in ffmpeg/libav is not finished yet.\n"
" Try updating ffmpeg or libav.\n"
"- Bad picture quality, blocks, blurriness.\n"
" Experiment with codec settings (--ovcopts) to maybe still get the\n"
" desired quality output at the expense of bitrate.\n"
"- Slow compression.\n"
" Bear with it.\n"
"- Crashes.\n"
" Happens. Try varying options to work around.\n"
"If none of this helps you, try another codec in place of %s.\n\n",
ctx->vc->name);
}
ret = avcodec_open2(codec, ctx->vc, &ctx->voptions);
#if HAVE_AVCODEC_HAS_CODECPAR
if (ret >= 0)
ret = avcodec_parameters_from_context(ctx->vst->codecpar, codec);
#endif
// complain about all remaining options, then free the dict
for (de = NULL; (de = av_dict_get(ctx->voptions, "", de,
AV_DICT_IGNORE_SUFFIX));)
MP_WARN(ctx, "ovcopts: key '%s' not found.\n",
de->key);
av_dict_free(&ctx->voptions);
break;
case AVMEDIA_TYPE_AUDIO:
MP_INFO(ctx, "Opening audio encoder: %s [%s]\n",
ctx->ac->long_name, ctx->ac->name);
if (ctx->ac->capabilities & CODEC_CAP_EXPERIMENTAL) {
codec->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
MP_WARN(ctx, "\n\n"
" ********************************************\n"
" **** Experimental AUDIO codec selected! ****\n"
" ********************************************\n\n"
"This means the output file may be broken or bad.\n"
"Possible reasons, problems, workarounds:\n"
"- Codec implementation in ffmpeg/libav is not finished yet.\n"
" Try updating ffmpeg or libav.\n"
"- Bad sound quality, noise, clicking, whistles, choppiness.\n"
" Experiment with codec settings (--oacopts) to maybe still get the\n"
" desired quality output at the expense of bitrate.\n"
"- Slow compression.\n"
" Bear with it.\n"
"- Crashes.\n"
" Happens. Try varying options to work around.\n"
"If none of this helps you, try another codec in place of %s.\n\n",
ctx->ac->name);
}
ret = avcodec_open2(codec, ctx->ac, &ctx->aoptions);
#if HAVE_AVCODEC_HAS_CODECPAR
if (ret >= 0)
ret = avcodec_parameters_from_context(ctx->ast->codecpar, codec);
#endif
// complain about all remaining options, then free the dict
for (de = NULL; (de = av_dict_get(ctx->aoptions, "", de,
AV_DICT_IGNORE_SUFFIX));)
MP_WARN(ctx, "oacopts: key '%s' not found.\n",
de->key);
av_dict_free(&ctx->aoptions);
break;
default:
ret = -1;
break;
}
if (ret < 0)
encode_lavc_fail(ctx,
"unable to open encoder (see above for the cause)\n");
return ret;
}
void encode_lavc_write_stats(struct encode_lavc_context *ctx,
AVCodecContext *codec)
{
CHECK_FAIL(ctx, );
switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
if (ctx->twopass_bytebuffer_v)
if (codec->stats_out)
stream_write_buffer(ctx->twopass_bytebuffer_v,
codec->stats_out,
strlen(codec->stats_out));
break;
case AVMEDIA_TYPE_AUDIO:
if (ctx->twopass_bytebuffer_a)
if (codec->stats_out)
stream_write_buffer(ctx->twopass_bytebuffer_a,
codec->stats_out,
strlen(codec->stats_out));
break;
default:
break;
}
}
int encode_lavc_write_frame(struct encode_lavc_context *ctx, AVStream *stream,
AVPacket *packet)
{
int r;
CHECK_FAIL(ctx, -1);
if (stream->index != packet->stream_index) {
MP_ERR(ctx, "Called encode_lavc_write_frame on the wrong stream\n");
return -1;
}
if (ctx->header_written <= 0)
return -1;
MP_DBG(ctx,
"write frame: stream %d ptsi %d (%f) dtsi %d (%f) size %d\n",
(int)packet->stream_index,
(int)packet->pts,
packet->pts
* (double)stream->time_base.num
/ (double)stream->time_base.den,
(int)packet->dts,
packet->dts
* (double)stream->time_base.num
/ (double)stream->time_base.den,
(int)packet->size);
#if HAVE_AVCODEC_HAS_CODECPAR
switch (stream->codecpar->codec_type) {
#else
switch (stream->codec->codec_type) {
#endif
case AVMEDIA_TYPE_VIDEO:
ctx->vbytes += packet->size;
++ctx->frames;
break;
case AVMEDIA_TYPE_AUDIO:
ctx->abytes += packet->size;
ctx->audioseconds += packet->duration
* (double)stream->time_base.num
/ (double)stream->time_base.den;
break;
default:
break;
}
r = av_interleaved_write_frame(ctx->avc, packet);
return r;
}
int encode_lavc_supports_pixfmt(struct encode_lavc_context *ctx,
enum AVPixelFormat pix_fmt)
{
CHECK_FAIL(ctx, 0);
if (!ctx->vc)
return 0;
if (pix_fmt == AV_PIX_FMT_NONE)
return 0;
if (!ctx->vc->pix_fmts)
return 1;
else {
const enum AVPixelFormat *p;
for (p = ctx->vc->pix_fmts; *p >= 0; ++p) {
if (pix_fmt == *p)
return 1;
}
}
return 0;
}
void encode_lavc_discontinuity(struct encode_lavc_context *ctx)
{
if (!ctx)
return;
pthread_mutex_lock(&ctx->lock);
CHECK_FAIL_UNLOCK(ctx, );
ctx->audio_pts_offset = MP_NOPTS_VALUE;
ctx->last_video_in_pts = MP_NOPTS_VALUE;
ctx->discontinuity_pts_offset = MP_NOPTS_VALUE;
pthread_mutex_unlock(&ctx->lock);
}
static void encode_lavc_printoptions(struct mp_log *log, void *obj,
const char *indent, const char *subindent,
const char *unit, int filter_and,
int filter_eq)
{
const AVOption *opt = NULL;
char optbuf[32];
while ((opt = av_opt_next(obj, opt))) {
// if flags are 0, it simply hasn't been filled in yet and may be
// potentially useful
if (opt->flags)
if ((opt->flags & filter_and) != filter_eq)
continue;
/* Don't print CONST's on level one.
* Don't print anything but CONST's on level two.
* Only print items from the requested unit.
*/
if (!unit && opt->type == AV_OPT_TYPE_CONST)
continue;
else if (unit && opt->type != AV_OPT_TYPE_CONST)
continue;
else if (unit && opt->type == AV_OPT_TYPE_CONST
&& strcmp(unit, opt->unit))
continue;
else if (unit && opt->type == AV_OPT_TYPE_CONST)
mp_info(log, "%s", subindent);
else
mp_info(log, "%s", indent);
switch (opt->type) {
case AV_OPT_TYPE_FLAGS:
snprintf(optbuf, sizeof(optbuf), "%s=<flags>", opt->name);
break;
case AV_OPT_TYPE_INT:
snprintf(optbuf, sizeof(optbuf), "%s=<int>", opt->name);
break;
case AV_OPT_TYPE_INT64:
snprintf(optbuf, sizeof(optbuf), "%s=<int64>", opt->name);
break;
case AV_OPT_TYPE_DOUBLE:
snprintf(optbuf, sizeof(optbuf), "%s=<double>", opt->name);
break;
case AV_OPT_TYPE_FLOAT:
snprintf(optbuf, sizeof(optbuf), "%s=<float>", opt->name);
break;
case AV_OPT_TYPE_STRING:
snprintf(optbuf, sizeof(optbuf), "%s=<string>", opt->name);
break;
case AV_OPT_TYPE_RATIONAL:
snprintf(optbuf, sizeof(optbuf), "%s=<rational>", opt->name);
break;
case AV_OPT_TYPE_BINARY:
snprintf(optbuf, sizeof(optbuf), "%s=<binary>", opt->name);
break;
case AV_OPT_TYPE_CONST:
snprintf(optbuf, sizeof(optbuf), " [+-]%s", opt->name);
break;
default:
snprintf(optbuf, sizeof(optbuf), "%s", opt->name);
break;
}
optbuf[sizeof(optbuf) - 1] = 0;
mp_info(log, "%-32s ", optbuf);
if (opt->help)
mp_info(log, " %s", opt->help);
mp_info(log, "\n");
if (opt->unit && opt->type != AV_OPT_TYPE_CONST)
encode_lavc_printoptions(log, obj, indent, subindent, opt->unit,
filter_and, filter_eq);
}
}
bool encode_lavc_showhelp(struct mp_log *log, struct encode_opts *opts)
{
bool help_output = false;
if (av_codec_next(NULL) == NULL)
mp_err(log, "NO CODECS\n");
#define CHECKS(str) ((str) && \
strcmp((str), "help") == 0 ? (help_output |= 1) : 0)
#define CHECKV(strv) ((strv) && (strv)[0] && \
strcmp((strv)[0], "help") == 0 ? (help_output |= 1) : 0)
if (CHECKS(opts->format)) {
AVOutputFormat *c = NULL;
mp_info(log, "Available output formats:\n");
while ((c = av_oformat_next(c)))
mp_info(log, " --of=%-13s %s\n", c->name,
c->long_name ? c->long_name : "");
av_free(c);
}
if (CHECKV(opts->fopts)) {
AVFormatContext *c = avformat_alloc_context();
AVOutputFormat *format = NULL;
mp_info(log, "Available output format ctx->options:\n");
encode_lavc_printoptions(log, c, " --ofopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM,
AV_OPT_FLAG_ENCODING_PARAM);
av_free(c);
while ((format = av_oformat_next(format))) {
if (format->priv_class) {
mp_info(log, "Additionally, for --of=%s:\n",
format->name);
encode_lavc_printoptions(log, &format->priv_class, " --ofopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM,
AV_OPT_FLAG_ENCODING_PARAM);
}
}
}
if (CHECKV(opts->vopts)) {
AVCodecContext *c = avcodec_alloc_context3(NULL);
AVCodec *codec = NULL;
mp_info(log, "Available output video codec ctx->options:\n");
encode_lavc_printoptions(log,
c, " --ovcopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM);
av_free(c);
while ((codec = av_codec_next(codec))) {
if (!av_codec_is_encoder(codec))
continue;
if (codec->type != AVMEDIA_TYPE_VIDEO)
continue;
if (opts->vcodec && opts->vcodec[0] &&
strcmp(opts->vcodec, codec->name) != 0)
continue;
if (codec->priv_class) {
mp_info(log, "Additionally, for --ovc=%s:\n",
codec->name);
encode_lavc_printoptions(log,
&codec->priv_class, " --ovcopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_VIDEO_PARAM);
}
}
}
if (CHECKV(opts->aopts)) {
AVCodecContext *c = avcodec_alloc_context3(NULL);
AVCodec *codec = NULL;
mp_info(log, "Available output audio codec ctx->options:\n");
encode_lavc_printoptions(log,
c, " --oacopts=", " ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM);
av_free(c);
while ((codec = av_codec_next(codec))) {
if (!av_codec_is_encoder(codec))
continue;
if (codec->type != AVMEDIA_TYPE_AUDIO)
continue;
if (opts->acodec && opts->acodec[0] &&
strcmp(opts->acodec, codec->name) != 0)
continue;
if (codec->priv_class) {
mp_info(log, "Additionally, for --oac=%s:\n",
codec->name);
encode_lavc_printoptions(log,
&codec->priv_class, " --oacopts=",
" ", NULL,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM,
AV_OPT_FLAG_ENCODING_PARAM |
AV_OPT_FLAG_AUDIO_PARAM);
}
}
}
if (CHECKS(opts->vcodec)) {
AVCodec *c = NULL;
mp_info(log, "Available output video codecs:\n");
while ((c = av_codec_next(c))) {
if (!av_codec_is_encoder(c))
continue;
if (c->type != AVMEDIA_TYPE_VIDEO)
continue;
mp_info(log, " --ovc=%-12s %s\n", c->name,
c->long_name ? c->long_name : "");
}
av_free(c);
}
if (CHECKS(opts->acodec)) {
AVCodec *c = NULL;
mp_info(log, "Available output audio codecs:\n");
while ((c = av_codec_next(c))) {
if (!av_codec_is_encoder(c))
continue;
if (c->type != AVMEDIA_TYPE_AUDIO)
continue;
mp_info(log, " --oac=%-12s %s\n", c->name,
c->long_name ? c->long_name : "");
}
av_free(c);
}
return help_output;
}
double encode_lavc_getoffset(struct encode_lavc_context *ctx,
AVCodecContext *codec)
{
CHECK_FAIL(ctx, 0);
switch (codec->codec_type) {
case AVMEDIA_TYPE_VIDEO:
return ctx->options->voffset;
case AVMEDIA_TYPE_AUDIO:
return ctx->options->aoffset;
default:
break;
}
return 0;
}
int encode_lavc_getstatus(struct encode_lavc_context *ctx,
char *buf, int bufsize,
float relative_position)
{
double now = mp_time_sec();
float minutes, megabytes, fps, x;
float f = FFMAX(0.0001, relative_position);
if (!ctx)
return -1;
pthread_mutex_lock(&ctx->lock);
CHECK_FAIL_UNLOCK(ctx, -1);
minutes = (now - ctx->t0) / 60.0 * (1 - f) / f;
megabytes = ctx->avc->pb ? (avio_size(ctx->avc->pb) / 1048576.0 / f) : 0;
fps = ctx->frames / (now - ctx->t0);
x = ctx->audioseconds / (now - ctx->t0);
if (ctx->frames)
snprintf(buf, bufsize, "{%.1fmin %.1ffps %.1fMB}",
minutes, fps, megabytes);
else if (ctx->audioseconds)
snprintf(buf, bufsize, "{%.1fmin %.2fx %.1fMB}",
minutes, x, megabytes);
else
snprintf(buf, bufsize, "{%.1fmin %.1fMB}",
minutes, megabytes);
buf[bufsize - 1] = 0;
pthread_mutex_unlock(&ctx->lock);
return 0;
}
void encode_lavc_expect_stream(struct encode_lavc_context *ctx, int mt)
{
pthread_mutex_lock(&ctx->lock);
CHECK_FAIL_UNLOCK(ctx, );
switch (mt) {
case AVMEDIA_TYPE_VIDEO:
ctx->expect_video = true;
break;
case AVMEDIA_TYPE_AUDIO:
ctx->expect_audio = true;
break;
}
pthread_mutex_unlock(&ctx->lock);
}
bool encode_lavc_didfail(struct encode_lavc_context *ctx)
{
if (!ctx)
return false;
pthread_mutex_lock(&ctx->lock);
bool fail = ctx && ctx->failed;
pthread_mutex_unlock(&ctx->lock);
return fail;
}
void encode_lavc_fail(struct encode_lavc_context *ctx, const char *format, ...)
{
va_list va;
va_start(va, format);
mp_msg_va(ctx->log, MSGL_ERR, format, va);
va_end(va);
if (ctx->failed)
return;
ctx->failed = true;
encode_lavc_finish(ctx);
}
bool encode_lavc_set_csp(struct encode_lavc_context *ctx,
AVCodecContext *codec, enum mp_csp csp)
{
CHECK_FAIL(ctx, NULL);
if (ctx->header_written) {
if (codec->colorspace != mp_csp_to_avcol_spc(csp))
MP_WARN(ctx, "can not change color space during encoding\n");
return false;
}
codec->colorspace = mp_csp_to_avcol_spc(csp);
return true;
}
bool encode_lavc_set_csp_levels(struct encode_lavc_context *ctx,
AVCodecContext *codec, enum mp_csp_levels lev)
{
CHECK_FAIL(ctx, NULL);
if (ctx->header_written) {
if (codec->color_range != mp_csp_levels_to_avcol_range(lev))
MP_WARN(ctx, "can not change color space during encoding\n");
return false;
}
codec->color_range = mp_csp_levels_to_avcol_range(lev);
return true;
}
enum mp_csp encode_lavc_get_csp(struct encode_lavc_context *ctx,
AVCodecContext *codec)
{
CHECK_FAIL(ctx, 0);
return avcol_spc_to_mp_csp(codec->colorspace);
}
enum mp_csp_levels encode_lavc_get_csp_levels(struct encode_lavc_context *ctx,
AVCodecContext *codec)
{
CHECK_FAIL(ctx, 0);
return avcol_range_to_mp_csp_levels(codec->color_range);
}
// vim: ts=4 sw=4 et
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