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ffmpeg/fftools/ffmpeg_mux_init.c
Andreas Rheinhardt 44620ade25 fftools/ffmpeg_mux_init: Fix attachment_filename use-after-free 
The filename is freed with the OptionsContext and therefore
there will be a use-after-free when reporting the filename
in print_stream_maps(). So create a copy of the string.

This is a regression since 8aed3911fc.
fate-lavf-mkv_attachment exhibits it (and reports a random nonsense
filename here), but this does not make the test fail (not even with
valgrind; only with ASAN, as it aborts on use-after-free).

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2024-02-18 18:09:33 +01:00

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/*
* Muxer/output file setup.
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include "cmdutils.h"
#include "ffmpeg.h"
#include "ffmpeg_mux.h"
#include "ffmpeg_sched.h"
#include "fopen_utf8.h"
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
#include "libavcodec/avcodec.h"
#include "libavfilter/avfilter.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/avutil.h"
#include "libavutil/bprint.h"
#include "libavutil/dict.h"
#include "libavutil/display.h"
#include "libavutil/getenv_utf8.h"
#include "libavutil/iamf.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/pixdesc.h"
#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
static int check_opt_bitexact(void *ctx, const AVDictionary *opts,
const char *opt_name, int flag)
{
const AVDictionaryEntry *e = av_dict_get(opts, opt_name, NULL, 0);
if (e) {
const AVOption *o = av_opt_find(ctx, opt_name, NULL, 0, 0);
int val = 0;
if (!o)
return 0;
av_opt_eval_flags(ctx, o, e->value, &val);
return !!(val & flag);
}
return 0;
}
static int choose_encoder(const OptionsContext *o, AVFormatContext *s,
OutputStream *ost, const AVCodec **enc)
{
enum AVMediaType type = ost->type;
char *codec_name = NULL;
*enc = NULL;
MATCH_PER_STREAM_OPT(codec_names, str, codec_name, s, ost->st);
if (type != AVMEDIA_TYPE_VIDEO &&
type != AVMEDIA_TYPE_AUDIO &&
type != AVMEDIA_TYPE_SUBTITLE) {
if (codec_name && strcmp(codec_name, "copy")) {
const char *type_str = av_get_media_type_string(type);
av_log(ost, AV_LOG_FATAL,
"Encoder '%s' specified, but only '-codec copy' supported "
"for %s streams\n", codec_name, type_str);
return AVERROR(ENOSYS);
}
return 0;
}
if (!codec_name) {
ost->par_in->codec_id = av_guess_codec(s->oformat, NULL, s->url, NULL, ost->type);
*enc = avcodec_find_encoder(ost->par_in->codec_id);
if (!*enc) {
av_log(ost, AV_LOG_FATAL, "Automatic encoder selection failed "
"Default encoder for format %s (codec %s) is "
"probably disabled. Please choose an encoder manually.\n",
s->oformat->name, avcodec_get_name(ost->par_in->codec_id));
return AVERROR_ENCODER_NOT_FOUND;
}
} else if (strcmp(codec_name, "copy")) {
int ret = find_codec(ost, codec_name, ost->type, 1, enc);
if (ret < 0)
return ret;
ost->par_in->codec_id = (*enc)->id;
}
return 0;
}
static char *get_line(AVIOContext *s, AVBPrint *bprint)
{
char c;
while ((c = avio_r8(s)) && c != '\n')
av_bprint_chars(bprint, c, 1);
if (!av_bprint_is_complete(bprint))
return NULL;
return bprint->str;
}
static int get_preset_file_2(const char *preset_name, const char *codec_name, AVIOContext **s)
{
int i, ret = -1;
char filename[1000];
char *env_avconv_datadir = getenv_utf8("AVCONV_DATADIR");
char *env_home = getenv_utf8("HOME");
const char *base[3] = { env_avconv_datadir,
env_home,
AVCONV_DATADIR,
};
for (i = 0; i < FF_ARRAY_ELEMS(base) && ret < 0; i++) {
if (!base[i])
continue;
if (codec_name) {
snprintf(filename, sizeof(filename), "%s%s/%s-%s.avpreset", base[i],
i != 1 ? "" : "/.avconv", codec_name, preset_name);
ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
}
if (ret < 0) {
snprintf(filename, sizeof(filename), "%s%s/%s.avpreset", base[i],
i != 1 ? "" : "/.avconv", preset_name);
ret = avio_open2(s, filename, AVIO_FLAG_READ, &int_cb, NULL);
}
}
freeenv_utf8(env_home);
freeenv_utf8(env_avconv_datadir);
return ret;
}
typedef struct EncStatsFile {
char *path;
AVIOContext *io;
} EncStatsFile;
static EncStatsFile *enc_stats_files;
static int nb_enc_stats_files;
static int enc_stats_get_file(AVIOContext **io, const char *path)
{
EncStatsFile *esf;
int ret;
for (int i = 0; i < nb_enc_stats_files; i++)
if (!strcmp(path, enc_stats_files[i].path)) {
*io = enc_stats_files[i].io;
return 0;
}
ret = GROW_ARRAY(enc_stats_files, nb_enc_stats_files);
if (ret < 0)
return ret;
esf = &enc_stats_files[nb_enc_stats_files - 1];
ret = avio_open2(&esf->io, path, AVIO_FLAG_WRITE, &int_cb, NULL);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error opening stats file '%s': %s\n",
path, av_err2str(ret));
return ret;
}
esf->path = av_strdup(path);
if (!esf->path)
return AVERROR(ENOMEM);
*io = esf->io;
return 0;
}
void of_enc_stats_close(void)
{
for (int i = 0; i < nb_enc_stats_files; i++) {
av_freep(&enc_stats_files[i].path);
avio_closep(&enc_stats_files[i].io);
}
av_freep(&enc_stats_files);
nb_enc_stats_files = 0;
}
static int unescape(char **pdst, size_t *dst_len,
const char **pstr, char delim)
{
const char *str = *pstr;
char *dst;
size_t len, idx;
*pdst = NULL;
len = strlen(str);
if (!len)
return 0;
dst = av_malloc(len + 1);
if (!dst)
return AVERROR(ENOMEM);
for (idx = 0; *str; idx++, str++) {
if (str[0] == '\\' && str[1])
str++;
else if (*str == delim)
break;
dst[idx] = *str;
}
if (!idx) {
av_freep(&dst);
return 0;
}
dst[idx] = 0;
*pdst = dst;
*dst_len = idx;
*pstr = str;
return 0;
}
static int enc_stats_init(OutputStream *ost, EncStats *es, int pre,
const char *path, const char *fmt_spec)
{
static const struct {
enum EncStatsType type;
const char *str;
unsigned pre_only:1;
unsigned post_only:1;
unsigned need_input_data:1;
} fmt_specs[] = {
{ ENC_STATS_FILE_IDX, "fidx" },
{ ENC_STATS_STREAM_IDX, "sidx" },
{ ENC_STATS_FRAME_NUM, "n" },
{ ENC_STATS_FRAME_NUM_IN, "ni", 0, 0, 1 },
{ ENC_STATS_TIMEBASE, "tb" },
{ ENC_STATS_TIMEBASE_IN, "tbi", 0, 0, 1 },
{ ENC_STATS_PTS, "pts" },
{ ENC_STATS_PTS_TIME, "t" },
{ ENC_STATS_PTS_IN, "ptsi", 0, 0, 1 },
{ ENC_STATS_PTS_TIME_IN, "ti", 0, 0, 1 },
{ ENC_STATS_DTS, "dts", 0, 1 },
{ ENC_STATS_DTS_TIME, "dt", 0, 1 },
{ ENC_STATS_SAMPLE_NUM, "sn", 1 },
{ ENC_STATS_NB_SAMPLES, "samp", 1 },
{ ENC_STATS_PKT_SIZE, "size", 0, 1 },
{ ENC_STATS_BITRATE, "br", 0, 1 },
{ ENC_STATS_AVG_BITRATE, "abr", 0, 1 },
{ ENC_STATS_KEYFRAME, "key", 0, 1 },
};
const char *next = fmt_spec;
int ret;
while (*next) {
EncStatsComponent *c;
char *val;
size_t val_len;
// get the sequence up until next opening brace
ret = unescape(&val, &val_len, &next, '{');
if (ret < 0)
return ret;
if (val) {
ret = GROW_ARRAY(es->components, es->nb_components);
if (ret < 0) {
av_freep(&val);
return ret;
}
c = &es->components[es->nb_components - 1];
c->type = ENC_STATS_LITERAL;
c->str = val;
c->str_len = val_len;
}
if (!*next)
break;
next++;
// get the part inside braces
ret = unescape(&val, &val_len, &next, '}');
if (ret < 0)
return ret;
if (!val) {
av_log(NULL, AV_LOG_ERROR,
"Empty formatting directive in: %s\n", fmt_spec);
return AVERROR(EINVAL);
}
if (!*next) {
av_log(NULL, AV_LOG_ERROR,
"Missing closing brace in: %s\n", fmt_spec);
ret = AVERROR(EINVAL);
goto fail;
}
next++;
ret = GROW_ARRAY(es->components, es->nb_components);
if (ret < 0)
goto fail;
c = &es->components[es->nb_components - 1];
for (size_t i = 0; i < FF_ARRAY_ELEMS(fmt_specs); i++) {
if (!strcmp(val, fmt_specs[i].str)) {
if ((pre && fmt_specs[i].post_only) || (!pre && fmt_specs[i].pre_only)) {
av_log(NULL, AV_LOG_ERROR,
"Format directive '%s' may only be used %s-encoding\n",
val, pre ? "post" : "pre");
ret = AVERROR(EINVAL);
goto fail;
}
c->type = fmt_specs[i].type;
if (fmt_specs[i].need_input_data && !ost->ist) {
av_log(ost, AV_LOG_WARNING,
"Format directive '%s' is unavailable, because "
"this output stream has no associated input stream\n",
val);
}
break;
}
}
if (!c->type) {
av_log(NULL, AV_LOG_ERROR, "Invalid format directive: %s\n", val);
ret = AVERROR(EINVAL);
goto fail;
}
fail:
av_freep(&val);
if (ret < 0)
return ret;
}
ret = pthread_mutex_init(&es->lock, NULL);
if (ret)
return AVERROR(ret);
es->lock_initialized = 1;
ret = enc_stats_get_file(&es->io, path);
if (ret < 0)
return ret;
return 0;
}
static const char *output_stream_item_name(void *obj)
{
const MuxStream *ms = obj;
return ms->log_name;
}
static const AVClass output_stream_class = {
.class_name = "OutputStream",
.version = LIBAVUTIL_VERSION_INT,
.item_name = output_stream_item_name,
.category = AV_CLASS_CATEGORY_MUXER,
};
static MuxStream *mux_stream_alloc(Muxer *mux, enum AVMediaType type)
{
const char *type_str = av_get_media_type_string(type);
MuxStream *ms;
ms = allocate_array_elem(&mux->of.streams, sizeof(*ms), &mux->of.nb_streams);
if (!ms)
return NULL;
ms->ost.file = &mux->of;
ms->ost.index = mux->of.nb_streams - 1;
ms->ost.type = type;
ms->ost.class = &output_stream_class;
ms->sch_idx = -1;
ms->sch_idx_enc = -1;
snprintf(ms->log_name, sizeof(ms->log_name), "%cost#%d:%d",
type_str ? *type_str : '?', mux->of.index, ms->ost.index);
return ms;
}
static int ost_get_filters(const OptionsContext *o, AVFormatContext *oc,
OutputStream *ost, char **dst)
{
const char *filters = NULL;
#if FFMPEG_OPT_FILTER_SCRIPT
const char *filters_script = NULL;
MATCH_PER_STREAM_OPT(filter_scripts, str, filters_script, oc, ost->st);
#endif
MATCH_PER_STREAM_OPT(filters, str, filters, oc, ost->st);
if (!ost->enc) {
if (
#if FFMPEG_OPT_FILTER_SCRIPT
filters_script ||
#endif
filters) {
av_log(ost, AV_LOG_ERROR,
"%s '%s' was specified, but codec copy was selected. "
"Filtering and streamcopy cannot be used together.\n",
#if FFMPEG_OPT_FILTER_SCRIPT
filters ? "Filtergraph" : "Filtergraph script",
filters ? filters : filters_script
#else
"Filtergraph", filters
#endif
);
return AVERROR(ENOSYS);
}
return 0;
}
if (!ost->ist) {
if (
#if FFMPEG_OPT_FILTER_SCRIPT
filters_script ||
#endif
filters) {
av_log(ost, AV_LOG_ERROR,
"%s '%s' was specified for a stream fed from a complex "
"filtergraph. Simple and complex filtering cannot be used "
"together for the same stream.\n",
#if FFMPEG_OPT_FILTER_SCRIPT
filters ? "Filtergraph" : "Filtergraph script",
filters ? filters : filters_script
#else
"Filtergraph", filters
#endif
);
return AVERROR(EINVAL);
}
return 0;
}
#if FFMPEG_OPT_FILTER_SCRIPT
if (filters_script && filters) {
av_log(ost, AV_LOG_ERROR, "Both -filter and -filter_script set\n");
return AVERROR(EINVAL);
}
if (filters_script)
*dst = file_read(filters_script);
else
#endif
if (filters)
*dst = av_strdup(filters);
else
*dst = av_strdup(ost->type == AVMEDIA_TYPE_VIDEO ? "null" : "anull");
return *dst ? 0 : AVERROR(ENOMEM);
}
static int parse_matrix_coeffs(void *logctx, uint16_t *dest, const char *str)
{
int i;
const char *p = str;
for (i = 0;; i++) {
dest[i] = atoi(p);
if (i == 63)
break;
p = strchr(p, ',');
if (!p) {
av_log(logctx, AV_LOG_FATAL,
"Syntax error in matrix \"%s\" at coeff %d\n", str, i);
return AVERROR(EINVAL);
}
p++;
}
return 0;
}
static int fmt_in_list(const int *formats, int format)
{
for (; *formats != -1; formats++)
if (*formats == format)
return 1;
return 0;
}
static enum AVPixelFormat
choose_pixel_fmt(const AVCodec *codec, enum AVPixelFormat target)
{
const enum AVPixelFormat *p = codec->pix_fmts;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
//FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
enum AVPixelFormat best= AV_PIX_FMT_NONE;
for (; *p != AV_PIX_FMT_NONE; p++) {
best = av_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
if (*p == target)
break;
}
if (*p == AV_PIX_FMT_NONE) {
if (target != AV_PIX_FMT_NONE)
av_log(NULL, AV_LOG_WARNING,
"Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
av_get_pix_fmt_name(target),
codec->name,
av_get_pix_fmt_name(best));
return best;
}
return target;
}
static enum AVPixelFormat pix_fmt_parse(OutputStream *ost, const char *name)
{
const enum AVPixelFormat *fmts = ost->enc_ctx->codec->pix_fmts;
enum AVPixelFormat fmt;
fmt = av_get_pix_fmt(name);
if (fmt == AV_PIX_FMT_NONE) {
av_log(ost, AV_LOG_FATAL, "Unknown pixel format requested: %s.\n", name);
return AV_PIX_FMT_NONE;
}
/* when the user specified-format is an alias for an endianness-specific
* one (e.g. rgb48 -> rgb48be/le), it gets translated into the native
* endianness by av_get_pix_fmt();
* the following code handles the case when the native endianness is not
* supported by the encoder, but the other one is */
if (fmts && !fmt_in_list(fmts, fmt)) {
const char *name_canonical = av_get_pix_fmt_name(fmt);
int len = strlen(name_canonical);
if (strcmp(name, name_canonical) &&
(!strcmp(name_canonical + len - 2, "le") ||
!strcmp(name_canonical + len - 2, "be"))) {
char name_other[64];
enum AVPixelFormat fmt_other;
snprintf(name_other, sizeof(name_other), "%s%ce",
name, name_canonical[len - 2] == 'l' ? 'b' : 'l');
fmt_other = av_get_pix_fmt(name_other);
if (fmt_other != AV_PIX_FMT_NONE && fmt_in_list(fmts, fmt_other)) {
av_log(ost, AV_LOG_VERBOSE, "Mapping pixel format %s->%s\n",
name, name_other);
fmt = fmt_other;
}
}
}
if (fmts && !fmt_in_list(fmts, fmt))
fmt = choose_pixel_fmt(ost->enc_ctx->codec, fmt);
return fmt;
}
static int new_stream_video(Muxer *mux, const OptionsContext *o,
OutputStream *ost)
{
AVFormatContext *oc = mux->fc;
AVStream *st;
char *frame_rate = NULL, *max_frame_rate = NULL, *frame_aspect_ratio = NULL;
int ret = 0;
st = ost->st;
MATCH_PER_STREAM_OPT(frame_rates, str, frame_rate, oc, st);
if (frame_rate && av_parse_video_rate(&ost->frame_rate, frame_rate) < 0) {
av_log(ost, AV_LOG_FATAL, "Invalid framerate value: %s\n", frame_rate);
return AVERROR(EINVAL);
}
MATCH_PER_STREAM_OPT(max_frame_rates, str, max_frame_rate, oc, st);
if (max_frame_rate && av_parse_video_rate(&ost->max_frame_rate, max_frame_rate) < 0) {
av_log(ost, AV_LOG_FATAL, "Invalid maximum framerate value: %s\n", max_frame_rate);
return AVERROR(EINVAL);
}
if (frame_rate && max_frame_rate) {
av_log(ost, AV_LOG_ERROR, "Only one of -fpsmax and -r can be set for a stream.\n");
return AVERROR(EINVAL);
}
MATCH_PER_STREAM_OPT(frame_aspect_ratios, str, frame_aspect_ratio, oc, st);
if (frame_aspect_ratio) {
AVRational q;
if (av_parse_ratio(&q, frame_aspect_ratio, 255, 0, NULL) < 0 ||
q.num <= 0 || q.den <= 0) {
av_log(ost, AV_LOG_FATAL, "Invalid aspect ratio: %s\n", frame_aspect_ratio);
return AVERROR(EINVAL);
}
ost->frame_aspect_ratio = q;
}
if (ost->enc_ctx) {
AVCodecContext *video_enc = ost->enc_ctx;
const char *p = NULL, *fps_mode = NULL;
char *frame_size = NULL;
char *frame_pix_fmt = NULL;
char *intra_matrix = NULL, *inter_matrix = NULL;
char *chroma_intra_matrix = NULL;
int do_pass = 0;
int i;
MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, oc, st);
if (frame_size) {
ret = av_parse_video_size(&video_enc->width, &video_enc->height, frame_size);
if (ret < 0) {
av_log(ost, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
return AVERROR(EINVAL);
}
}
MATCH_PER_STREAM_OPT(frame_pix_fmts, str, frame_pix_fmt, oc, st);
if (frame_pix_fmt && *frame_pix_fmt == '+') {
ost->keep_pix_fmt = 1;
if (!*++frame_pix_fmt)
frame_pix_fmt = NULL;
}
if (frame_pix_fmt) {
video_enc->pix_fmt = pix_fmt_parse(ost, frame_pix_fmt);
if (video_enc->pix_fmt == AV_PIX_FMT_NONE)
return AVERROR(EINVAL);
}
MATCH_PER_STREAM_OPT(intra_matrices, str, intra_matrix, oc, st);
if (intra_matrix) {
if (!(video_enc->intra_matrix = av_mallocz(sizeof(*video_enc->intra_matrix) * 64)))
return AVERROR(ENOMEM);
ret = parse_matrix_coeffs(ost, video_enc->intra_matrix, intra_matrix);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(chroma_intra_matrices, str, chroma_intra_matrix, oc, st);
if (chroma_intra_matrix) {
uint16_t *p = av_mallocz(sizeof(*video_enc->chroma_intra_matrix) * 64);
if (!p)
return AVERROR(ENOMEM);
video_enc->chroma_intra_matrix = p;
ret = parse_matrix_coeffs(ost, p, chroma_intra_matrix);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(inter_matrices, str, inter_matrix, oc, st);
if (inter_matrix) {
if (!(video_enc->inter_matrix = av_mallocz(sizeof(*video_enc->inter_matrix) * 64)))
return AVERROR(ENOMEM);
ret = parse_matrix_coeffs(ost, video_enc->inter_matrix, inter_matrix);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(rc_overrides, str, p, oc, st);
for (i = 0; p; i++) {
int start, end, q;
int e = sscanf(p, "%d,%d,%d", &start, &end, &q);
if (e != 3) {
av_log(ost, AV_LOG_FATAL, "error parsing rc_override\n");
return AVERROR(EINVAL);
}
video_enc->rc_override =
av_realloc_array(video_enc->rc_override,
i + 1, sizeof(RcOverride));
if (!video_enc->rc_override) {
av_log(ost, AV_LOG_FATAL, "Could not (re)allocate memory for rc_override.\n");
return AVERROR(ENOMEM);
}
video_enc->rc_override[i].start_frame = start;
video_enc->rc_override[i].end_frame = end;
if (q > 0) {
video_enc->rc_override[i].qscale = q;
video_enc->rc_override[i].quality_factor = 1.0;
}
else {
video_enc->rc_override[i].qscale = 0;
video_enc->rc_override[i].quality_factor = -q/100.0;
}
p = strchr(p, '/');
if (p) p++;
}
video_enc->rc_override_count = i;
#if FFMPEG_OPT_PSNR
if (do_psnr) {
av_log(ost, AV_LOG_WARNING, "The -psnr option is deprecated, use -flags +psnr\n");
video_enc->flags|= AV_CODEC_FLAG_PSNR;
}
#endif
/* two pass mode */
MATCH_PER_STREAM_OPT(pass, i, do_pass, oc, st);
if (do_pass) {
if (do_pass & 1) {
video_enc->flags |= AV_CODEC_FLAG_PASS1;
av_dict_set(&ost->encoder_opts, "flags", "+pass1", AV_DICT_APPEND);
}
if (do_pass & 2) {
video_enc->flags |= AV_CODEC_FLAG_PASS2;
av_dict_set(&ost->encoder_opts, "flags", "+pass2", AV_DICT_APPEND);
}
}
MATCH_PER_STREAM_OPT(passlogfiles, str, ost->logfile_prefix, oc, st);
if (ost->logfile_prefix &&
!(ost->logfile_prefix = av_strdup(ost->logfile_prefix)))
return AVERROR(ENOMEM);
if (do_pass) {
int ost_idx = -1;
char logfilename[1024];
FILE *f;
/* compute this stream's global index */
for (int i = 0; i <= ost->file->index; i++)
ost_idx += output_files[i]->nb_streams;
snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
ost->logfile_prefix ? ost->logfile_prefix :
DEFAULT_PASS_LOGFILENAME_PREFIX,
ost_idx);
if (!strcmp(ost->enc_ctx->codec->name, "libx264")) {
av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
} else {
if (video_enc->flags & AV_CODEC_FLAG_PASS2) {
char *logbuffer = file_read(logfilename);
if (!logbuffer) {
av_log(ost, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
logfilename);
return AVERROR(EIO);
}
video_enc->stats_in = logbuffer;
}
if (video_enc->flags & AV_CODEC_FLAG_PASS1) {
f = fopen_utf8(logfilename, "wb");
if (!f) {
av_log(ost, AV_LOG_FATAL,
"Cannot write log file '%s' for pass-1 encoding: %s\n",
logfilename, strerror(errno));
return AVERROR(errno);
}
ost->logfile = f;
}
}
}
MATCH_PER_STREAM_OPT(force_fps, i, ost->force_fps, oc, st);
#if FFMPEG_OPT_TOP
ost->top_field_first = -1;
MATCH_PER_STREAM_OPT(top_field_first, i, ost->top_field_first, oc, st);
if (ost->top_field_first >= 0)
av_log(ost, AV_LOG_WARNING, "-top is deprecated, use the setfield filter instead\n");
#endif
#if FFMPEG_OPT_VSYNC
ost->vsync_method = video_sync_method;
#else
ost->vsync_method = VSYNC_AUTO;
#endif
MATCH_PER_STREAM_OPT(fps_mode, str, fps_mode, oc, st);
if (fps_mode) {
ret = parse_and_set_vsync(fps_mode, &ost->vsync_method, ost->file->index, ost->index, 0);
if (ret < 0)
return ret;
}
if ((ost->frame_rate.num || ost->max_frame_rate.num) &&
!(ost->vsync_method == VSYNC_AUTO ||
ost->vsync_method == VSYNC_CFR || ost->vsync_method == VSYNC_VSCFR)) {
av_log(ost, AV_LOG_FATAL, "One of -r/-fpsmax was specified "
"together a non-CFR -vsync/-fps_mode. This is contradictory.\n");
return AVERROR(EINVAL);
}
if (ost->vsync_method == VSYNC_AUTO) {
if (ost->frame_rate.num || ost->max_frame_rate.num) {
ost->vsync_method = VSYNC_CFR;
} else if (!strcmp(oc->oformat->name, "avi")) {
ost->vsync_method = VSYNC_VFR;
} else {
ost->vsync_method = (oc->oformat->flags & AVFMT_VARIABLE_FPS) ?
((oc->oformat->flags & AVFMT_NOTIMESTAMPS) ?
VSYNC_PASSTHROUGH : VSYNC_VFR) :
VSYNC_CFR;
}
if (ost->ist && ost->vsync_method == VSYNC_CFR) {
const InputFile *ifile = ost->ist->file;
if (ifile->nb_streams == 1 && ifile->input_ts_offset == 0)
ost->vsync_method = VSYNC_VSCFR;
}
if (ost->vsync_method == VSYNC_CFR && copy_ts) {
ost->vsync_method = VSYNC_VSCFR;
}
}
ost->is_cfr = (ost->vsync_method == VSYNC_CFR || ost->vsync_method == VSYNC_VSCFR);
}
return 0;
}
static int new_stream_audio(Muxer *mux, const OptionsContext *o,
OutputStream *ost)
{
AVFormatContext *oc = mux->fc;
AVStream *st;
int ret = 0;
st = ost->st;
if (ost->enc_ctx) {
AVCodecContext *audio_enc = ost->enc_ctx;
int channels = 0;
char *layout = NULL;
char *sample_fmt = NULL;
MATCH_PER_STREAM_OPT(audio_channels, i, channels, oc, st);
if (channels) {
audio_enc->ch_layout.order = AV_CHANNEL_ORDER_UNSPEC;
audio_enc->ch_layout.nb_channels = channels;
}
MATCH_PER_STREAM_OPT(audio_ch_layouts, str, layout, oc, st);
if (layout) {
if (av_channel_layout_from_string(&audio_enc->ch_layout, layout) < 0) {
#if FF_API_OLD_CHANNEL_LAYOUT
uint64_t mask;
AV_NOWARN_DEPRECATED({
mask = av_get_channel_layout(layout);
})
if (!mask) {
#endif
av_log(ost, AV_LOG_FATAL, "Unknown channel layout: %s\n", layout);
return AVERROR(EINVAL);
#if FF_API_OLD_CHANNEL_LAYOUT
}
av_log(ost, AV_LOG_WARNING, "Channel layout '%s' uses a deprecated syntax.\n",
layout);
av_channel_layout_from_mask(&audio_enc->ch_layout, mask);
#endif
}
}
MATCH_PER_STREAM_OPT(sample_fmts, str, sample_fmt, oc, st);
if (sample_fmt &&
(audio_enc->sample_fmt = av_get_sample_fmt(sample_fmt)) == AV_SAMPLE_FMT_NONE) {
av_log(ost, AV_LOG_FATAL, "Invalid sample format '%s'\n", sample_fmt);
return AVERROR(EINVAL);
}
MATCH_PER_STREAM_OPT(audio_sample_rate, i, audio_enc->sample_rate, oc, st);
MATCH_PER_STREAM_OPT(apad, str, ost->apad, oc, st);
ost->apad = av_strdup(ost->apad);
#if FFMPEG_OPT_MAP_CHANNEL
/* check for channel mapping for this audio stream */
for (int n = 0; n < o->nb_audio_channel_maps; n++) {
AudioChannelMap *map = &o->audio_channel_maps[n];
if ((map->ofile_idx == -1 || ost->file->index == map->ofile_idx) &&
(map->ostream_idx == -1 || ost->st->index == map->ostream_idx)) {
InputStream *ist;
if (map->channel_idx == -1) {
ist = NULL;
} else if (!ost->ist) {
av_log(ost, AV_LOG_FATAL, "Cannot determine input stream for channel mapping %d.%d\n",
ost->file->index, ost->st->index);
continue;
} else {
ist = ost->ist;
}
if (!ist || (ist->file->index == map->file_idx && ist->index == map->stream_idx)) {
ret = av_reallocp_array(&ost->audio_channels_map,
ost->audio_channels_mapped + 1,
sizeof(*ost->audio_channels_map));
if (ret < 0)
return ret;
ost->audio_channels_map[ost->audio_channels_mapped++] = map->channel_idx;
}
}
}
#endif
}
return 0;
}
static int new_stream_subtitle(Muxer *mux, const OptionsContext *o,
OutputStream *ost)
{
AVStream *st;
st = ost->st;
if (ost->enc_ctx) {
AVCodecContext *subtitle_enc = ost->enc_ctx;
AVCodecDescriptor const *input_descriptor =
avcodec_descriptor_get(ost->ist->par->codec_id);
AVCodecDescriptor const *output_descriptor =
avcodec_descriptor_get(subtitle_enc->codec_id);
int input_props = 0, output_props = 0;
char *frame_size = NULL;
MATCH_PER_STREAM_OPT(frame_sizes, str, frame_size, mux->fc, st);
if (frame_size) {
int ret = av_parse_video_size(&subtitle_enc->width, &subtitle_enc->height, frame_size);
if (ret < 0) {
av_log(ost, AV_LOG_FATAL, "Invalid frame size: %s.\n", frame_size);
return ret;
}
}
if (input_descriptor)
input_props = input_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
if (output_descriptor)
output_props = output_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
if (input_props && output_props && input_props != output_props) {
av_log(ost, AV_LOG_ERROR,
"Subtitle encoding currently only possible from text to text "
"or bitmap to bitmap\n");
return AVERROR(EINVAL);
}
}
return 0;
}
static int streamcopy_init(const Muxer *mux, OutputStream *ost)
{
MuxStream *ms = ms_from_ost(ost);
const InputStream *ist = ost->ist;
const InputFile *ifile = ist->file;
AVCodecParameters *par = ost->par_in;
uint32_t codec_tag = par->codec_tag;
AVCodecContext *codec_ctx = NULL;
AVDictionary *codec_opts = NULL;
AVRational fr = ost->frame_rate;
int ret = 0;
codec_ctx = avcodec_alloc_context3(NULL);
if (!codec_ctx)
return AVERROR(ENOMEM);
ret = avcodec_parameters_to_context(codec_ctx, ist->par);
if (ret >= 0)
ret = av_opt_set_dict(codec_ctx, &ost->encoder_opts);
if (ret < 0) {
av_log(ost, AV_LOG_FATAL,
"Error setting up codec context options.\n");
goto fail;
}
ret = avcodec_parameters_from_context(par, codec_ctx);
if (ret < 0) {
av_log(ost, AV_LOG_FATAL,
"Error getting reference codec parameters.\n");
goto fail;
}
if (!codec_tag) {
const struct AVCodecTag * const *ct = mux->fc->oformat->codec_tag;
unsigned int codec_tag_tmp;
if (!ct || av_codec_get_id (ct, par->codec_tag) == par->codec_id ||
!av_codec_get_tag2(ct, par->codec_id, &codec_tag_tmp))
codec_tag = par->codec_tag;
}
par->codec_tag = codec_tag;
if (!fr.num)
fr = ist->framerate;
if (fr.num)
ost->st->avg_frame_rate = fr;
else
ost->st->avg_frame_rate = ist->st->avg_frame_rate;
ret = avformat_transfer_internal_stream_timing_info(mux->fc->oformat,
ost->st, ist->st, copy_tb);
if (ret < 0)
goto fail;
// copy timebase while removing common factors
if (ost->st->time_base.num <= 0 || ost->st->time_base.den <= 0) {
if (fr.num)
ost->st->time_base = av_inv_q(fr);
else
ost->st->time_base = av_add_q(av_stream_get_codec_timebase(ost->st), (AVRational){0, 1});
}
if (!ms->copy_prior_start) {
ms->ts_copy_start = (mux->of.start_time == AV_NOPTS_VALUE) ?
0 : mux->of.start_time;
if (copy_ts && ifile->start_time != AV_NOPTS_VALUE) {
ms->ts_copy_start = FFMAX(ms->ts_copy_start,
ifile->start_time + ifile->ts_offset);
}
}
for (int i = 0; i < ist->st->codecpar->nb_coded_side_data; i++) {
const AVPacketSideData *sd_src = &ist->st->codecpar->coded_side_data[i];
AVPacketSideData *sd_dst;
sd_dst = av_packet_side_data_new(&ost->st->codecpar->coded_side_data,
&ost->st->codecpar->nb_coded_side_data,
sd_src->type, sd_src->size, 0);
if (!sd_dst) {
ret = AVERROR(ENOMEM);
goto fail;
}
memcpy(sd_dst->data, sd_src->data, sd_src->size);
}
#if FFMPEG_ROTATION_METADATA
if (ost->rotate_overridden) {
AVPacketSideData *sd = av_packet_side_data_new(&ost->st->codecpar->coded_side_data,
&ost->st->codecpar->nb_coded_side_data,
AV_PKT_DATA_DISPLAYMATRIX,
sizeof(int32_t) * 9, 0);
if (sd)
av_display_rotation_set((int32_t *)sd->data, -ost->rotate_override_value);
}
#endif
switch (par->codec_type) {
case AVMEDIA_TYPE_AUDIO:
if ((par->block_align == 1 || par->block_align == 1152 || par->block_align == 576) &&
par->codec_id == AV_CODEC_ID_MP3)
par->block_align = 0;
if (par->codec_id == AV_CODEC_ID_AC3)
par->block_align = 0;
break;
case AVMEDIA_TYPE_VIDEO: {
AVRational sar;
if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
sar =
av_mul_q(ost->frame_aspect_ratio,
(AVRational){ par->height, par->width });
av_log(ost, AV_LOG_WARNING, "Overriding aspect ratio "
"with stream copy may produce invalid files\n");
}
else if (ist->st->sample_aspect_ratio.num)
sar = ist->st->sample_aspect_ratio;
else
sar = par->sample_aspect_ratio;
ost->st->sample_aspect_ratio = par->sample_aspect_ratio = sar;
ost->st->avg_frame_rate = ist->st->avg_frame_rate;
ost->st->r_frame_rate = ist->st->r_frame_rate;
break;
}
}
fail:
avcodec_free_context(&codec_ctx);
av_dict_free(&codec_opts);
return ret;
}
static int ost_add(Muxer *mux, const OptionsContext *o, enum AVMediaType type,
InputStream *ist, OutputFilter *ofilter,
OutputStream **post)
{
AVFormatContext *oc = mux->fc;
MuxStream *ms;
OutputStream *ost;
const AVCodec *enc;
AVStream *st;
int ret = 0;
const char *bsfs = NULL, *time_base = NULL;
char *filters = NULL, *next, *codec_tag = NULL;
double qscale = -1;
int i;
st = avformat_new_stream(oc, NULL);
if (!st)
return AVERROR(ENOMEM);
ms = mux_stream_alloc(mux, type);
if (!ms)
return AVERROR(ENOMEM);
// only streams with sources (i.e. not attachments)
// are handled by the scheduler
if (ist || ofilter) {
ret = GROW_ARRAY(mux->sch_stream_idx, mux->nb_sch_stream_idx);
if (ret < 0)
return ret;
ret = sch_add_mux_stream(mux->sch, mux->sch_idx);
if (ret < 0)
return ret;
av_assert0(ret == mux->nb_sch_stream_idx - 1);
mux->sch_stream_idx[ret] = ms->ost.index;
ms->sch_idx = ret;
}
ost = &ms->ost;
if (o->streamid) {
AVDictionaryEntry *e;
char idx[16], *p;
snprintf(idx, sizeof(idx), "%d", ost->index);
e = av_dict_get(o->streamid, idx, NULL, 0);
if (e) {
st->id = strtol(e->value, &p, 0);
if (!e->value[0] || *p) {
av_log(ost, AV_LOG_FATAL, "Invalid stream id: %s\n", e->value);
return AVERROR(EINVAL);
}
}
}
ost->par_in = avcodec_parameters_alloc();
if (!ost->par_in)
return AVERROR(ENOMEM);
ms->last_mux_dts = AV_NOPTS_VALUE;
ost->st = st;
ost->ist = ist;
ost->kf.ref_pts = AV_NOPTS_VALUE;
ost->par_in->codec_type = type;
st->codecpar->codec_type = type;
ret = choose_encoder(o, oc, ost, &enc);
if (ret < 0) {
av_log(ost, AV_LOG_FATAL, "Error selecting an encoder\n");
return ret;
}
if (enc) {
ost->enc_ctx = avcodec_alloc_context3(enc);
if (!ost->enc_ctx)
return AVERROR(ENOMEM);
ret = sch_add_enc(mux->sch, encoder_thread, ost,
ost->type == AVMEDIA_TYPE_SUBTITLE ? NULL : enc_open);
if (ret < 0)
return ret;
ms->sch_idx_enc = ret;
ret = enc_alloc(&ost->enc, enc, mux->sch, ms->sch_idx_enc);
if (ret < 0)
return ret;
av_strlcat(ms->log_name, "/", sizeof(ms->log_name));
av_strlcat(ms->log_name, enc->name, sizeof(ms->log_name));
} else {
if (ofilter) {
av_log(ost, AV_LOG_ERROR,
"Streamcopy requested for output stream fed "
"from a complex filtergraph. Filtering and streamcopy "
"cannot be used together.\n");
return AVERROR(EINVAL);
}
av_strlcat(ms->log_name, "/copy", sizeof(ms->log_name));
}
av_log(ost, AV_LOG_VERBOSE, "Created %s stream from ",
av_get_media_type_string(type));
if (ist)
av_log(ost, AV_LOG_VERBOSE, "input stream %d:%d",
ist->file->index, ist->index);
else if (ofilter)
av_log(ost, AV_LOG_VERBOSE, "complex filtergraph %d:[%s]\n",
ofilter->graph->index, ofilter->name);
else if (type == AVMEDIA_TYPE_ATTACHMENT)
av_log(ost, AV_LOG_VERBOSE, "attached file");
else av_assert0(0);
av_log(ost, AV_LOG_VERBOSE, "\n");
ms->pkt = av_packet_alloc();
if (!ms->pkt)
return AVERROR(ENOMEM);
if (ost->enc_ctx) {
AVCodecContext *enc = ost->enc_ctx;
AVIOContext *s = NULL;
char *buf = NULL, *arg = NULL, *preset = NULL;
const char *enc_stats_pre = NULL, *enc_stats_post = NULL, *mux_stats = NULL;
const char *enc_time_base = NULL;
ret = filter_codec_opts(o->g->codec_opts, enc->codec_id,
oc, st, enc->codec, &ost->encoder_opts);
if (ret < 0)
return ret;
MATCH_PER_STREAM_OPT(presets, str, preset, oc, st);
ost->autoscale = 1;
MATCH_PER_STREAM_OPT(autoscale, i, ost->autoscale, oc, st);
if (preset && (!(ret = get_preset_file_2(preset, enc->codec->name, &s)))) {
AVBPrint bprint;
av_bprint_init(&bprint, 0, AV_BPRINT_SIZE_UNLIMITED);
do {
av_bprint_clear(&bprint);
buf = get_line(s, &bprint);
if (!buf) {
ret = AVERROR(ENOMEM);
break;
}
if (!buf[0] || buf[0] == '#')
continue;
if (!(arg = strchr(buf, '='))) {
av_log(ost, AV_LOG_FATAL, "Invalid line found in the preset file.\n");
ret = AVERROR(EINVAL);
break;
}
*arg++ = 0;
av_dict_set(&ost->encoder_opts, buf, arg, AV_DICT_DONT_OVERWRITE);
} while (!s->eof_reached);
av_bprint_finalize(&bprint, NULL);
avio_closep(&s);
}
if (ret) {
av_log(ost, AV_LOG_FATAL,
"Preset %s specified, but could not be opened.\n", preset);
return ret;
}
MATCH_PER_STREAM_OPT(enc_stats_pre, str, enc_stats_pre, oc, st);
if (enc_stats_pre &&
(type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)) {
const char *format = "{fidx} {sidx} {n} {t}";
MATCH_PER_STREAM_OPT(enc_stats_pre_fmt, str, format, oc, st);
ret = enc_stats_init(ost, &ost->enc_stats_pre, 1, enc_stats_pre, format);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(enc_stats_post, str, enc_stats_post, oc, st);
if (enc_stats_post &&
(type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)) {
const char *format = "{fidx} {sidx} {n} {t}";
MATCH_PER_STREAM_OPT(enc_stats_post_fmt, str, format, oc, st);
ret = enc_stats_init(ost, &ost->enc_stats_post, 0, enc_stats_post, format);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(mux_stats, str, mux_stats, oc, st);
if (mux_stats &&
(type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)) {
const char *format = "{fidx} {sidx} {n} {t}";
MATCH_PER_STREAM_OPT(mux_stats_fmt, str, format, oc, st);
ret = enc_stats_init(ost, &ms->stats, 0, mux_stats, format);
if (ret < 0)
return ret;
}
MATCH_PER_STREAM_OPT(enc_time_bases, str, enc_time_base, oc, st);
if (enc_time_base) {
AVRational q;
if (!strcmp(enc_time_base, "demux")) {
q = (AVRational){ ENC_TIME_BASE_DEMUX, 0 };
} else if (!strcmp(enc_time_base, "filter")) {
q = (AVRational){ ENC_TIME_BASE_FILTER, 0 };
} else {
ret = av_parse_ratio(&q, enc_time_base, INT_MAX, 0, NULL);
if (ret < 0 || q.den <= 0
#if !FFMPEG_OPT_ENC_TIME_BASE_NUM
|| q.num < 0
#endif
) {
av_log(ost, AV_LOG_FATAL, "Invalid time base: %s\n", enc_time_base);
return ret < 0 ? ret : AVERROR(EINVAL);
}
#if FFMPEG_OPT_ENC_TIME_BASE_NUM
if (q.num < 0)
av_log(ost, AV_LOG_WARNING, "-enc_time_base -1 is deprecated,"
" use -enc_timebase demux\n");
#endif
}
ost->enc_timebase = q;
}
} else {
ret = filter_codec_opts(o->g->codec_opts, AV_CODEC_ID_NONE, oc, st,
NULL, &ost->encoder_opts);
if (ret < 0)
return ret;
}
if (o->bitexact) {
ost->bitexact = 1;
} else if (ost->enc_ctx) {
ost->bitexact = check_opt_bitexact(ost->enc_ctx, ost->encoder_opts, "flags",
AV_CODEC_FLAG_BITEXACT);
}
MATCH_PER_STREAM_OPT(time_bases, str, time_base, oc, st);
if (time_base) {
AVRational q;
if (av_parse_ratio(&q, time_base, INT_MAX, 0, NULL) < 0 ||
q.num <= 0 || q.den <= 0) {
av_log(ost, AV_LOG_FATAL, "Invalid time base: %s\n", time_base);
return AVERROR(EINVAL);
}
st->time_base = q;
}
ms->max_frames = INT64_MAX;
MATCH_PER_STREAM_OPT(max_frames, i64, ms->max_frames, oc, st);
for (i = 0; i < o->max_frames.nb_opt; i++) {
char *p = o->max_frames.opt[i].specifier;
if (!*p && type != AVMEDIA_TYPE_VIDEO) {
av_log(ost, AV_LOG_WARNING, "Applying unspecific -frames to non video streams, maybe you meant -vframes ?\n");
break;
}
}
ms->copy_prior_start = -1;
MATCH_PER_STREAM_OPT(copy_prior_start, i, ms->copy_prior_start, oc ,st);
MATCH_PER_STREAM_OPT(bitstream_filters, str, bsfs, oc, st);
if (bsfs && *bsfs) {
ret = av_bsf_list_parse_str(bsfs, &ms->bsf_ctx);
if (ret < 0) {
av_log(ost, AV_LOG_ERROR, "Error parsing bitstream filter sequence '%s': %s\n", bsfs, av_err2str(ret));
return ret;
}
}
MATCH_PER_STREAM_OPT(codec_tags, str, codec_tag, oc, st);
if (codec_tag) {
uint32_t tag = strtol(codec_tag, &next, 0);
if (*next) {
uint8_t buf[4] = { 0 };
memcpy(buf, codec_tag, FFMIN(sizeof(buf), strlen(codec_tag)));
tag = AV_RL32(buf);
}
ost->st->codecpar->codec_tag = tag;
ost->par_in->codec_tag = tag;
if (ost->enc_ctx)
ost->enc_ctx->codec_tag = tag;
}
MATCH_PER_STREAM_OPT(qscale, dbl, qscale, oc, st);
if (ost->enc_ctx && qscale >= 0) {
ost->enc_ctx->flags |= AV_CODEC_FLAG_QSCALE;
ost->enc_ctx->global_quality = FF_QP2LAMBDA * qscale;
}
if (ms->sch_idx >= 0) {
int max_muxing_queue_size = 128;
int muxing_queue_data_threshold = 50 * 1024 * 1024;
MATCH_PER_STREAM_OPT(max_muxing_queue_size, i, max_muxing_queue_size, oc, st);
MATCH_PER_STREAM_OPT(muxing_queue_data_threshold, i, muxing_queue_data_threshold, oc, st);
sch_mux_stream_buffering(mux->sch, mux->sch_idx, ms->sch_idx,
max_muxing_queue_size, muxing_queue_data_threshold);
}
MATCH_PER_STREAM_OPT(bits_per_raw_sample, i, ost->bits_per_raw_sample,
oc, st);
MATCH_PER_STREAM_OPT(fix_sub_duration_heartbeat, i, ost->fix_sub_duration_heartbeat,
oc, st);
if (oc->oformat->flags & AVFMT_GLOBALHEADER && ost->enc_ctx)
ost->enc_ctx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
av_dict_copy(&ost->sws_dict, o->g->sws_dict, 0);
av_dict_copy(&ost->swr_opts, o->g->swr_opts, 0);
if (ost->enc_ctx && av_get_exact_bits_per_sample(ost->enc_ctx->codec_id) == 24)
av_dict_set(&ost->swr_opts, "output_sample_bits", "24", 0);
MATCH_PER_STREAM_OPT(copy_initial_nonkeyframes, i,
ms->copy_initial_nonkeyframes, oc, st);
switch (type) {
case AVMEDIA_TYPE_VIDEO: ret = new_stream_video (mux, o, ost); break;
case AVMEDIA_TYPE_AUDIO: ret = new_stream_audio (mux, o, ost); break;
case AVMEDIA_TYPE_SUBTITLE: ret = new_stream_subtitle (mux, o, ost); break;
}
if (ret < 0)
return ret;
if (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO) {
ret = ost_get_filters(o, oc, ost, &filters);
if (ret < 0)
return ret;
}
if (ost->enc &&
(type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO)) {
if (ofilter) {
ost->filter = ofilter;
ret = ofilter_bind_ost(ofilter, ost, ms->sch_idx_enc);
if (ret < 0)
return ret;
} else {
ret = init_simple_filtergraph(ost->ist, ost, filters,
mux->sch, ms->sch_idx_enc);
if (ret < 0) {
av_log(ost, AV_LOG_ERROR,
"Error initializing a simple filtergraph\n");
return ret;
}
}
ret = sch_connect(mux->sch, SCH_ENC(ms->sch_idx_enc),
SCH_MSTREAM(mux->sch_idx, ms->sch_idx));
if (ret < 0)
return ret;
} else if (ost->ist) {
int sched_idx = ist_output_add(ost->ist, ost);
if (sched_idx < 0) {
av_log(ost, AV_LOG_ERROR,
"Error binding an input stream\n");
return sched_idx;
}
ms->sch_idx_src = sched_idx;
if (ost->enc) {
ret = sch_connect(mux->sch, SCH_DEC(sched_idx),
SCH_ENC(ms->sch_idx_enc));
if (ret < 0)
return ret;
ret = sch_connect(mux->sch, SCH_ENC(ms->sch_idx_enc),
SCH_MSTREAM(mux->sch_idx, ms->sch_idx));
if (ret < 0)
return ret;
} else {
ret = sch_connect(mux->sch, SCH_DSTREAM(ost->ist->file->index, sched_idx),
SCH_MSTREAM(ost->file->index, ms->sch_idx));
if (ret < 0)
return ret;
}
}
if (ost->ist && !ost->enc) {
ret = streamcopy_init(mux, ost);
if (ret < 0)
return ret;
}
// copy estimated duration as a hint to the muxer
if (ost->ist && ost->ist->st->duration > 0) {
ms->stream_duration = ist->st->duration;
ms->stream_duration_tb = ist->st->time_base;
}
if (post)
*post = ost;
return 0;
}
static int map_auto_video(Muxer *mux, const OptionsContext *o)
{
AVFormatContext *oc = mux->fc;
InputStream *best_ist = NULL;
int best_score = 0;
int qcr;
/* video: highest resolution */
if (av_guess_codec(oc->oformat, NULL, oc->url, NULL, AVMEDIA_TYPE_VIDEO) == AV_CODEC_ID_NONE)
return 0;
qcr = avformat_query_codec(oc->oformat, oc->oformat->video_codec, 0);
for (int j = 0; j < nb_input_files; j++) {
InputFile *ifile = input_files[j];
InputStream *file_best_ist = NULL;
int file_best_score = 0;
for (int i = 0; i < ifile->nb_streams; i++) {
InputStream *ist = ifile->streams[i];
int score;
if (ist->user_set_discard == AVDISCARD_ALL ||
ist->st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
continue;
score = ist->st->codecpar->width * ist->st->codecpar->height
+ 100000000 * !!(ist->st->event_flags & AVSTREAM_EVENT_FLAG_NEW_PACKETS)
+ 5000000*!!(ist->st->disposition & AV_DISPOSITION_DEFAULT);
if((qcr!=MKTAG('A', 'P', 'I', 'C')) && (ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC))
score = 1;
if (score > file_best_score) {
if((qcr==MKTAG('A', 'P', 'I', 'C')) && !(ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC))
continue;
file_best_score = score;
file_best_ist = ist;
}
}
if (file_best_ist) {
if((qcr == MKTAG('A', 'P', 'I', 'C')) ||
!(file_best_ist->st->disposition & AV_DISPOSITION_ATTACHED_PIC))
file_best_score -= 5000000*!!(file_best_ist->st->disposition & AV_DISPOSITION_DEFAULT);
if (file_best_score > best_score) {
best_score = file_best_score;
best_ist = file_best_ist;
}
}
}
if (best_ist)
return ost_add(mux, o, AVMEDIA_TYPE_VIDEO, best_ist, NULL, NULL);
return 0;
}
static int map_auto_audio(Muxer *mux, const OptionsContext *o)
{
AVFormatContext *oc = mux->fc;
InputStream *best_ist = NULL;
int best_score = 0;
/* audio: most channels */
if (av_guess_codec(oc->oformat, NULL, oc->url, NULL, AVMEDIA_TYPE_AUDIO) == AV_CODEC_ID_NONE)
return 0;
for (int j = 0; j < nb_input_files; j++) {
InputFile *ifile = input_files[j];
InputStream *file_best_ist = NULL;
int file_best_score = 0;
for (int i = 0; i < ifile->nb_streams; i++) {
InputStream *ist = ifile->streams[i];
int score;
if (ist->user_set_discard == AVDISCARD_ALL ||
ist->st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
continue;
score = ist->st->codecpar->ch_layout.nb_channels
+ 100000000 * !!(ist->st->event_flags & AVSTREAM_EVENT_FLAG_NEW_PACKETS)
+ 5000000*!!(ist->st->disposition & AV_DISPOSITION_DEFAULT);
if (score > file_best_score) {
file_best_score = score;
file_best_ist = ist;
}
}
if (file_best_ist) {
file_best_score -= 5000000*!!(file_best_ist->st->disposition & AV_DISPOSITION_DEFAULT);
if (file_best_score > best_score) {
best_score = file_best_score;
best_ist = file_best_ist;
}
}
}
if (best_ist)
return ost_add(mux, o, AVMEDIA_TYPE_AUDIO, best_ist, NULL, NULL);
return 0;
}
static int map_auto_subtitle(Muxer *mux, const OptionsContext *o)
{
AVFormatContext *oc = mux->fc;
const char *subtitle_codec_name = NULL;
/* subtitles: pick first */
subtitle_codec_name = opt_match_per_type_str(&o->codec_names, 's');
if (!avcodec_find_encoder(oc->oformat->subtitle_codec) && !subtitle_codec_name)
return 0;
for (InputStream *ist = ist_iter(NULL); ist; ist = ist_iter(ist))
if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
AVCodecDescriptor const *input_descriptor =
avcodec_descriptor_get(ist->st->codecpar->codec_id);
AVCodecDescriptor const *output_descriptor = NULL;
AVCodec const *output_codec =
avcodec_find_encoder(oc->oformat->subtitle_codec);
int input_props = 0, output_props = 0;
if (ist->user_set_discard == AVDISCARD_ALL)
continue;
if (output_codec)
output_descriptor = avcodec_descriptor_get(output_codec->id);
if (input_descriptor)
input_props = input_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
if (output_descriptor)
output_props = output_descriptor->props & (AV_CODEC_PROP_TEXT_SUB | AV_CODEC_PROP_BITMAP_SUB);
if (subtitle_codec_name ||
input_props & output_props ||
// Map dvb teletext which has neither property to any output subtitle encoder
input_descriptor && output_descriptor &&
(!input_descriptor->props ||
!output_descriptor->props)) {
return ost_add(mux, o, AVMEDIA_TYPE_SUBTITLE, ist, NULL, NULL);
}
}
return 0;
}
static int map_auto_data(Muxer *mux, const OptionsContext *o)
{
AVFormatContext *oc = mux->fc;
/* Data only if codec id match */
enum AVCodecID codec_id = av_guess_codec(oc->oformat, NULL, oc->url, NULL, AVMEDIA_TYPE_DATA);
if (codec_id == AV_CODEC_ID_NONE)
return 0;
for (InputStream *ist = ist_iter(NULL); ist; ist = ist_iter(ist)) {
if (ist->user_set_discard == AVDISCARD_ALL)
continue;
if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_DATA &&
ist->st->codecpar->codec_id == codec_id) {
int ret = ost_add(mux, o, AVMEDIA_TYPE_DATA, ist, NULL, NULL);
if (ret < 0)
return ret;
}
}
return 0;
}
static int map_manual(Muxer *mux, const OptionsContext *o, const StreamMap *map)
{
InputStream *ist;
int ret;
if (map->disabled)
return 0;
if (map->linklabel) {
FilterGraph *fg;
OutputFilter *ofilter = NULL;
int j, k;
for (j = 0; j < nb_filtergraphs; j++) {
fg = filtergraphs[j];
for (k = 0; k < fg->nb_outputs; k++) {
const char *linklabel = fg->outputs[k]->linklabel;
if (linklabel && !strcmp(linklabel, map->linklabel)) {
ofilter = fg->outputs[k];
goto loop_end;
}
}
}
loop_end:
if (!ofilter) {
av_log(mux, AV_LOG_FATAL, "Output with label '%s' does not exist "
"in any defined filter graph, or was already used elsewhere.\n", map->linklabel);
return AVERROR(EINVAL);
}
av_log(mux, AV_LOG_VERBOSE, "Creating output stream from an explicitly "
"mapped complex filtergraph %d, output [%s]\n", fg->index, map->linklabel);
ret = ost_add(mux, o, ofilter->type, NULL, ofilter, NULL);
if (ret < 0)
return ret;
} else {
ist = input_files[map->file_index]->streams[map->stream_index];
if (ist->user_set_discard == AVDISCARD_ALL) {
av_log(mux, AV_LOG_FATAL, "Stream #%d:%d is disabled and cannot be mapped.\n",
map->file_index, map->stream_index);
return AVERROR(EINVAL);
}
if(o->subtitle_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
return 0;
if(o-> audio_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
return 0;
if(o-> video_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
return 0;
if(o-> data_disable && ist->st->codecpar->codec_type == AVMEDIA_TYPE_DATA)
return 0;
if (ist->st->codecpar->codec_type == AVMEDIA_TYPE_UNKNOWN &&
!copy_unknown_streams) {
av_log(mux, ignore_unknown_streams ? AV_LOG_WARNING : AV_LOG_FATAL,
"Cannot map stream #%d:%d - unsupported type.\n",
map->file_index, map->stream_index);
if (!ignore_unknown_streams) {
av_log(mux, AV_LOG_FATAL,
"If you want unsupported types ignored instead "
"of failing, please use the -ignore_unknown option\n"
"If you want them copied, please use -copy_unknown\n");
return AVERROR(EINVAL);
}
return 0;
}
ret = ost_add(mux, o, ist->st->codecpar->codec_type, ist, NULL, NULL);
if (ret < 0)
return ret;
}
return 0;
}
static int of_add_attachments(Muxer *mux, const OptionsContext *o)
{
OutputStream *ost;
int err;
for (int i = 0; i < o->nb_attachments; i++) {
AVIOContext *pb;
uint8_t *attachment;
char *attachment_filename;
const char *p;
int64_t len;
if ((err = avio_open2(&pb, o->attachments[i], AVIO_FLAG_READ, &int_cb, NULL)) < 0) {
av_log(mux, AV_LOG_FATAL, "Could not open attachment file %s.\n",
o->attachments[i]);
return err;
}
if ((len = avio_size(pb)) <= 0) {
av_log(mux, AV_LOG_FATAL, "Could not get size of the attachment %s.\n",
o->attachments[i]);
err = len ? len : AVERROR_INVALIDDATA;
goto read_fail;
}
if (len > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_log(mux, AV_LOG_FATAL, "Attachment %s too large.\n",
o->attachments[i]);
err = AVERROR(ERANGE);
goto read_fail;
}
attachment = av_malloc(len + AV_INPUT_BUFFER_PADDING_SIZE);
if (!attachment) {
err = AVERROR(ENOMEM);
goto read_fail;
}
err = avio_read(pb, attachment, len);
if (err < 0)
av_log(mux, AV_LOG_FATAL, "Error reading attachment file %s: %s\n",
o->attachments[i], av_err2str(err));
else if (err != len) {
av_log(mux, AV_LOG_FATAL, "Could not read all %"PRId64" bytes for "
"attachment file %s\n", len, o->attachments[i]);
err = AVERROR(EIO);
}
read_fail:
avio_closep(&pb);
if (err < 0)
return err;
memset(attachment + len, 0, AV_INPUT_BUFFER_PADDING_SIZE);
av_log(mux, AV_LOG_VERBOSE, "Creating attachment stream from file %s\n",
o->attachments[i]);
attachment_filename = av_strdup(o->attachments[i]);
if (!attachment_filename) {
av_free(attachment);
return AVERROR(ENOMEM);
}
err = ost_add(mux, o, AVMEDIA_TYPE_ATTACHMENT, NULL, NULL, &ost);
if (err < 0) {
av_free(attachment_filename);
av_freep(&attachment);
return err;
}
ost->attachment_filename = attachment_filename;
ost->par_in->extradata = attachment;
ost->par_in->extradata_size = len;
p = strrchr(o->attachments[i], '/');
av_dict_set(&ost->st->metadata, "filename", (p && *p) ? p + 1 : o->attachments[i], AV_DICT_DONT_OVERWRITE);
}
return 0;
}
static int create_streams(Muxer *mux, const OptionsContext *o)
{
static int (* const map_func[])(Muxer *mux, const OptionsContext *o) = {
[AVMEDIA_TYPE_VIDEO] = map_auto_video,
[AVMEDIA_TYPE_AUDIO] = map_auto_audio,
[AVMEDIA_TYPE_SUBTITLE] = map_auto_subtitle,
[AVMEDIA_TYPE_DATA] = map_auto_data,
};
AVFormatContext *oc = mux->fc;
int auto_disable =
o->video_disable * (1 << AVMEDIA_TYPE_VIDEO) |
o->audio_disable * (1 << AVMEDIA_TYPE_AUDIO) |
o->subtitle_disable * (1 << AVMEDIA_TYPE_SUBTITLE) |
o->data_disable * (1 << AVMEDIA_TYPE_DATA);
int ret;
/* create streams for all unlabeled output pads */
for (int i = 0; i < nb_filtergraphs; i++) {
FilterGraph *fg = filtergraphs[i];
for (int j = 0; j < fg->nb_outputs; j++) {
OutputFilter *ofilter = fg->outputs[j];
if (ofilter->linklabel || ofilter->ost)
continue;
auto_disable |= 1 << ofilter->type;
av_log(mux, AV_LOG_VERBOSE, "Creating output stream from unlabeled "
"output of complex filtergraph %d.", fg->index);
if (!o->nb_stream_maps)
av_log(mux, AV_LOG_VERBOSE, " This overrides automatic %s mapping.",
av_get_media_type_string(ofilter->type));
av_log(mux, AV_LOG_VERBOSE, "\n");
ret = ost_add(mux, o, ofilter->type, NULL, ofilter, NULL);
if (ret < 0)
return ret;
}
}
if (!o->nb_stream_maps) {
av_log(mux, AV_LOG_VERBOSE, "No explicit maps, mapping streams automatically...\n");
/* pick the "best" stream of each type */
for (int i = 0; i < FF_ARRAY_ELEMS(map_func); i++) {
if (!map_func[i] || auto_disable & (1 << i))
continue;
ret = map_func[i](mux, o);
if (ret < 0)
return ret;
}
} else {
av_log(mux, AV_LOG_VERBOSE, "Adding streams from explicit maps...\n");
for (int i = 0; i < o->nb_stream_maps; i++) {
ret = map_manual(mux, o, &o->stream_maps[i]);
if (ret < 0)
return ret;
}
}
ret = of_add_attachments(mux, o);
if (ret < 0)
return ret;
// setup fix_sub_duration_heartbeat mappings
for (unsigned i = 0; i < oc->nb_streams; i++) {
MuxStream *src = ms_from_ost(mux->of.streams[i]);
if (!src->ost.fix_sub_duration_heartbeat)
continue;
for (unsigned j = 0; j < oc->nb_streams; j++) {
MuxStream *dst = ms_from_ost(mux->of.streams[j]);
if (src == dst || dst->ost.type != AVMEDIA_TYPE_SUBTITLE ||
!dst->ost.enc || !dst->ost.ist || !dst->ost.ist->fix_sub_duration)
continue;
ret = sch_mux_sub_heartbeat_add(mux->sch, mux->sch_idx, src->sch_idx,
dst->sch_idx_src);
}
}
if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
av_dump_format(oc, nb_output_files - 1, oc->url, 1);
av_log(mux, AV_LOG_ERROR, "Output file does not contain any stream\n");
return AVERROR(EINVAL);
}
return 0;
}
static int setup_sync_queues(Muxer *mux, AVFormatContext *oc, int64_t buf_size_us)
{
OutputFile *of = &mux->of;
int nb_av_enc = 0, nb_audio_fs = 0, nb_interleaved = 0;
int limit_frames = 0, limit_frames_av_enc = 0;
#define IS_AV_ENC(ost, type) \
(ost->enc_ctx && (type == AVMEDIA_TYPE_VIDEO || type == AVMEDIA_TYPE_AUDIO))
#define IS_INTERLEAVED(type) (type != AVMEDIA_TYPE_ATTACHMENT)
for (int i = 0; i < oc->nb_streams; i++) {
OutputStream *ost = of->streams[i];
MuxStream *ms = ms_from_ost(ost);
enum AVMediaType type = ost->type;
ms->sq_idx_mux = -1;
nb_interleaved += IS_INTERLEAVED(type);
nb_av_enc += IS_AV_ENC(ost, type);
nb_audio_fs += (ost->enc_ctx && type == AVMEDIA_TYPE_AUDIO &&
!(ost->enc_ctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE));
limit_frames |= ms->max_frames < INT64_MAX;
limit_frames_av_enc |= (ms->max_frames < INT64_MAX) && IS_AV_ENC(ost, type);
}
if (!((nb_interleaved > 1 && of->shortest) ||
(nb_interleaved > 0 && limit_frames) ||
nb_audio_fs))
return 0;
/* we use a sync queue before encoding when:
* - 'shortest' is in effect and we have two or more encoded audio/video
* streams
* - at least one encoded audio/video stream is frame-limited, since
* that has similar semantics to 'shortest'
* - at least one audio encoder requires constant frame sizes
*
* Note that encoding sync queues are handled in the scheduler, because
* different encoders run in different threads and need external
* synchronization, while muxer sync queues can be handled inside the muxer
*/
if ((of->shortest && nb_av_enc > 1) || limit_frames_av_enc || nb_audio_fs) {
int sq_idx, ret;
sq_idx = sch_add_sq_enc(mux->sch, buf_size_us, mux);
if (sq_idx < 0)
return sq_idx;
for (int i = 0; i < oc->nb_streams; i++) {
OutputStream *ost = of->streams[i];
MuxStream *ms = ms_from_ost(ost);
enum AVMediaType type = ost->type;
if (!IS_AV_ENC(ost, type))
continue;
ret = sch_sq_add_enc(mux->sch, sq_idx, ms->sch_idx_enc,
of->shortest || ms->max_frames < INT64_MAX,
ms->max_frames);
if (ret < 0)
return ret;
}
}
/* if there are any additional interleaved streams, then ALL the streams
* are also synchronized before sending them to the muxer */
if (nb_interleaved > nb_av_enc) {
mux->sq_mux = sq_alloc(SYNC_QUEUE_PACKETS, buf_size_us, mux);
if (!mux->sq_mux)
return AVERROR(ENOMEM);
mux->sq_pkt = av_packet_alloc();
if (!mux->sq_pkt)
return AVERROR(ENOMEM);
for (int i = 0; i < oc->nb_streams; i++) {
OutputStream *ost = of->streams[i];
MuxStream *ms = ms_from_ost(ost);
enum AVMediaType type = ost->type;
if (!IS_INTERLEAVED(type))
continue;
ms->sq_idx_mux = sq_add_stream(mux->sq_mux,
of->shortest || ms->max_frames < INT64_MAX);
if (ms->sq_idx_mux < 0)
return ms->sq_idx_mux;
if (ms->max_frames != INT64_MAX)
sq_limit_frames(mux->sq_mux, ms->sq_idx_mux, ms->max_frames);
}
}
#undef IS_AV_ENC
#undef IS_INTERLEAVED
return 0;
}
static int of_parse_iamf_audio_element_layers(Muxer *mux, AVStreamGroup *stg, char *ptr)
{
AVIAMFAudioElement *audio_element = stg->params.iamf_audio_element;
AVDictionary *dict = NULL;
const char *token;
int ret = 0;
audio_element->demixing_info =
av_iamf_param_definition_alloc(AV_IAMF_PARAMETER_DEFINITION_DEMIXING, 1, NULL);
audio_element->recon_gain_info =
av_iamf_param_definition_alloc(AV_IAMF_PARAMETER_DEFINITION_RECON_GAIN, 1, NULL);
if (!audio_element->demixing_info ||
!audio_element->recon_gain_info)
return AVERROR(ENOMEM);
/* process manually set layers and parameters */
token = av_strtok(NULL, ",", &ptr);
while (token) {
const AVDictionaryEntry *e;
int demixing = 0, recon_gain = 0;
int layer = 0;
if (ptr)
ptr += strspn(ptr, " \n\t\r");
if (av_strstart(token, "layer=", &token))
layer = 1;
else if (av_strstart(token, "demixing=", &token))
demixing = 1;
else if (av_strstart(token, "recon_gain=", &token))
recon_gain = 1;
av_dict_free(&dict);
ret = av_dict_parse_string(&dict, token, "=", ":", 0);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error parsing audio element specification %s\n", token);
goto fail;
}
if (layer) {
AVIAMFLayer *audio_layer = av_iamf_audio_element_add_layer(audio_element);
if (!audio_layer) {
av_log(mux, AV_LOG_ERROR, "Error adding layer to stream group %d\n", stg->index);
ret = AVERROR(ENOMEM);
goto fail;
}
av_opt_set_dict(audio_layer, &dict);
} else if (demixing || recon_gain) {
AVIAMFParamDefinition *param = demixing ? audio_element->demixing_info
: audio_element->recon_gain_info;
void *subblock = av_iamf_param_definition_get_subblock(param, 0);
av_opt_set_dict(param, &dict);
av_opt_set_dict(subblock, &dict);
}
// make sure that no entries are left in the dict
e = NULL;
if (e = av_dict_iterate(dict, e)) {
av_log(mux, AV_LOG_FATAL, "Unknown layer key %s.\n", e->key);
ret = AVERROR(EINVAL);
goto fail;
}
token = av_strtok(NULL, ",", &ptr);
}
fail:
av_dict_free(&dict);
if (!ret && !audio_element->nb_layers) {
av_log(mux, AV_LOG_ERROR, "No layer in audio element specification\n");
ret = AVERROR(EINVAL);
}
return ret;
}
static int of_parse_iamf_submixes(Muxer *mux, AVStreamGroup *stg, char *ptr)
{
AVFormatContext *oc = mux->fc;
AVIAMFMixPresentation *mix = stg->params.iamf_mix_presentation;
AVDictionary *dict = NULL;
const char *token;
char *submix_str = NULL;
int ret = 0;
/* process manually set submixes */
token = av_strtok(NULL, ",", &ptr);
while (token) {
AVIAMFSubmix *submix = NULL;
const char *subtoken;
char *subptr = NULL;
if (ptr)
ptr += strspn(ptr, " \n\t\r");
if (!av_strstart(token, "submix=", &token)) {
av_log(mux, AV_LOG_ERROR, "No submix in mix presentation specification \"%s\"\n", token);
goto fail;
}
submix_str = av_strdup(token);
if (!submix_str)
goto fail;
submix = av_iamf_mix_presentation_add_submix(mix);
if (!submix) {
av_log(mux, AV_LOG_ERROR, "Error adding submix to stream group %d\n", stg->index);
ret = AVERROR(ENOMEM);
goto fail;
}
submix->output_mix_config =
av_iamf_param_definition_alloc(AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN, 0, NULL);
if (!submix->output_mix_config) {
ret = AVERROR(ENOMEM);
goto fail;
}
subptr = NULL;
subtoken = av_strtok(submix_str, "|", &subptr);
while (subtoken) {
const AVDictionaryEntry *e;
int element = 0, layout = 0;
if (subptr)
subptr += strspn(subptr, " \n\t\r");
if (av_strstart(subtoken, "element=", &subtoken))
element = 1;
else if (av_strstart(subtoken, "layout=", &subtoken))
layout = 1;
av_dict_free(&dict);
ret = av_dict_parse_string(&dict, subtoken, "=", ":", 0);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error parsing submix specification \"%s\"\n", subtoken);
goto fail;
}
if (element) {
AVIAMFSubmixElement *submix_element;
char *endptr = NULL;
int64_t idx = -1;
if (e = av_dict_get(dict, "stg", NULL, 0))
idx = strtoll(e->value, &endptr, 0);
if (!endptr || *endptr || idx < 0 || idx >= oc->nb_stream_groups - 1 ||
oc->stream_groups[idx]->type != AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT) {
av_log(mux, AV_LOG_ERROR, "Invalid or missing stream group index in "
"submix element specification \"%s\"\n", subtoken);
ret = AVERROR(EINVAL);
goto fail;
}
submix_element = av_iamf_submix_add_element(submix);
if (!submix_element) {
av_log(mux, AV_LOG_ERROR, "Error adding element to submix\n");
ret = AVERROR(ENOMEM);
goto fail;
}
submix_element->audio_element_id = oc->stream_groups[idx]->id;
submix_element->element_mix_config =
av_iamf_param_definition_alloc(AV_IAMF_PARAMETER_DEFINITION_MIX_GAIN, 0, NULL);
if (!submix_element->element_mix_config)
ret = AVERROR(ENOMEM);
av_dict_set(&dict, "stg", NULL, 0);
av_opt_set_dict2(submix_element, &dict, AV_OPT_SEARCH_CHILDREN);
} else if (layout) {
AVIAMFSubmixLayout *submix_layout = av_iamf_submix_add_layout(submix);
if (!submix_layout) {
av_log(mux, AV_LOG_ERROR, "Error adding layout to submix\n");
ret = AVERROR(ENOMEM);
goto fail;
}
av_opt_set_dict(submix_layout, &dict);
} else
av_opt_set_dict2(submix, &dict, AV_OPT_SEARCH_CHILDREN);
if (ret < 0) {
goto fail;
}
// make sure that no entries are left in the dict
e = NULL;
while (e = av_dict_iterate(dict, e)) {
av_log(mux, AV_LOG_FATAL, "Unknown submix key %s.\n", e->key);
ret = AVERROR(EINVAL);
goto fail;
}
subtoken = av_strtok(NULL, "|", &subptr);
}
av_freep(&submix_str);
if (!submix->nb_elements) {
av_log(mux, AV_LOG_ERROR, "No audio elements in submix specification \"%s\"\n", token);
ret = AVERROR(EINVAL);
}
token = av_strtok(NULL, ",", &ptr);
}
fail:
av_dict_free(&dict);
av_free(submix_str);
return ret;
}
static int of_parse_group_token(Muxer *mux, const char *token, char *ptr)
{
AVFormatContext *oc = mux->fc;
AVStreamGroup *stg;
AVDictionary *dict = NULL, *tmp = NULL;
const AVDictionaryEntry *e;
const AVOption opts[] = {
{ "type", "Set group type", offsetof(AVStreamGroup, type), AV_OPT_TYPE_INT,
{ .i64 = 0 }, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM, .unit = "type" },
{ "iamf_audio_element", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT }, .unit = "type" },
{ "iamf_mix_presentation", NULL, 0, AV_OPT_TYPE_CONST,
{ .i64 = AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION }, .unit = "type" },
{ NULL },
};
const AVClass class = {
.class_name = "StreamGroupType",
.item_name = av_default_item_name,
.option = opts,
.version = LIBAVUTIL_VERSION_INT,
};
const AVClass *pclass = &class;
int type, ret;
ret = av_dict_parse_string(&dict, token, "=", ":", AV_DICT_MULTIKEY);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error parsing group specification %s\n", token);
return ret;
}
// "type" is not a user settable AVOption in AVStreamGroup, so handle it here
e = av_dict_get(dict, "type", NULL, 0);
if (!e) {
av_log(mux, AV_LOG_ERROR, "No type specified for Stream Group in \"%s\"\n", token);
ret = AVERROR(EINVAL);
goto end;
}
ret = av_opt_eval_int(&pclass, opts, e->value, &type);
if (!ret && type == AV_STREAM_GROUP_PARAMS_NONE)
ret = AVERROR(EINVAL);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Invalid group type \"%s\"\n", e->value);
goto end;
}
av_dict_copy(&tmp, dict, 0);
stg = avformat_stream_group_create(oc, type, &tmp);
if (!stg) {
ret = AVERROR(ENOMEM);
goto end;
}
e = NULL;
while (e = av_dict_get(dict, "st", e, 0)) {
char *endptr;
int64_t idx = strtoll(e->value, &endptr, 0);
if (*endptr || idx < 0 || idx >= oc->nb_streams) {
av_log(mux, AV_LOG_ERROR, "Invalid stream index %"PRId64"\n", idx);
ret = AVERROR(EINVAL);
goto end;
}
ret = avformat_stream_group_add_stream(stg, oc->streams[idx]);
if (ret < 0)
goto end;
}
while (e = av_dict_get(dict, "stg", e, 0)) {
char *endptr;
int64_t idx = strtoll(e->value, &endptr, 0);
if (*endptr || idx < 0 || idx >= oc->nb_stream_groups - 1) {
av_log(mux, AV_LOG_ERROR, "Invalid stream group index %"PRId64"\n", idx);
ret = AVERROR(EINVAL);
goto end;
}
for (unsigned i = 0; i < oc->stream_groups[idx]->nb_streams; i++) {
ret = avformat_stream_group_add_stream(stg, oc->stream_groups[idx]->streams[i]);
if (ret < 0)
goto end;
}
}
switch(type) {
case AV_STREAM_GROUP_PARAMS_IAMF_AUDIO_ELEMENT:
ret = of_parse_iamf_audio_element_layers(mux, stg, ptr);
break;
case AV_STREAM_GROUP_PARAMS_IAMF_MIX_PRESENTATION:
ret = of_parse_iamf_submixes(mux, stg, ptr);
break;
default:
av_log(mux, AV_LOG_FATAL, "Unknown group type %d.\n", type);
ret = AVERROR(EINVAL);
break;
}
if (ret < 0)
goto end;
// make sure that nothing but "st" and "stg" entries are left in the dict
e = NULL;
av_dict_set(&tmp, "type", NULL, 0);
while (e = av_dict_iterate(tmp, e)) {
if (!strcmp(e->key, "st") || !strcmp(e->key, "stg"))
continue;
av_log(mux, AV_LOG_FATAL, "Unknown group key %s.\n", e->key);
ret = AVERROR(EINVAL);
goto end;
}
ret = 0;
end:
av_dict_free(&dict);
av_dict_free(&tmp);
return ret;
}
static int of_add_groups(Muxer *mux, const OptionsContext *o)
{
/* process manually set groups */
for (int i = 0; i < o->stream_groups.nb_opt; i++) {
const char *token;
char *str, *ptr = NULL;
int ret = 0;
str = av_strdup(o->stream_groups.opt[i].u.str);
if (!str)
return ret;
token = av_strtok(str, ",", &ptr);
if (token) {
if (ptr)
ptr += strspn(ptr, " \n\t\r");
ret = of_parse_group_token(mux, token, ptr);
}
av_free(str);
if (ret < 0)
return ret;
}
return 0;
}
static int of_add_programs(Muxer *mux, const OptionsContext *o)
{
AVFormatContext *oc = mux->fc;
/* process manually set programs */
for (int i = 0; i < o->program.nb_opt; i++) {
AVDictionary *dict = NULL;
const AVDictionaryEntry *e;
AVProgram *program;
int ret, progid = i + 1;
ret = av_dict_parse_string(&dict, o->program.opt[i].u.str, "=", ":",
AV_DICT_MULTIKEY);
if (ret < 0) {
av_log(mux, AV_LOG_ERROR, "Error parsing program specification %s\n",
o->program.opt[i].u.str);
return ret;
}
e = av_dict_get(dict, "program_num", NULL, 0);
if (e) {
progid = strtol(e->value, NULL, 0);
av_dict_set(&dict, e->key, NULL, 0);
}
program = av_new_program(oc, progid);
if (!program) {
ret = AVERROR(ENOMEM);
goto fail;
}
e = av_dict_get(dict, "title", NULL, 0);
if (e) {
av_dict_set(&program->metadata, e->key, e->value, 0);
av_dict_set(&dict, e->key, NULL, 0);
}
e = NULL;
while (e = av_dict_get(dict, "st", e, 0)) {
int st_num = strtol(e->value, NULL, 0);
av_program_add_stream_index(oc, progid, st_num);
}
// make sure that nothing but "st" entries are left in the dict
e = NULL;
while (e = av_dict_iterate(dict, e)) {
if (!strcmp(e->key, "st"))
continue;
av_log(mux, AV_LOG_FATAL, "Unknown program key %s.\n", e->key);
ret = AVERROR(EINVAL);
goto fail;
}
fail:
av_dict_free(&dict);
if (ret < 0)
return ret;
}
return 0;
}
/**
* Parse a metadata specifier passed as 'arg' parameter.
* @param arg metadata string to parse
* @param type metadata type is written here -- g(lobal)/s(tream)/c(hapter)/p(rogram)
* @param index for type c/p, chapter/program index is written here
* @param stream_spec for type s, the stream specifier is written here
*/
static int parse_meta_type(void *logctx, const char *arg,
char *type, int *index, const char **stream_spec)
{
if (*arg) {
*type = *arg;
switch (*arg) {
case 'g':
break;
case 's':
if (*(++arg) && *arg != ':') {
av_log(logctx, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", arg);
return AVERROR(EINVAL);
}
*stream_spec = *arg == ':' ? arg + 1 : "";
break;
case 'c':
case 'p':
if (*(++arg) == ':')
*index = strtol(++arg, NULL, 0);
break;
default:
av_log(logctx, AV_LOG_FATAL, "Invalid metadata type %c.\n", *arg);
return AVERROR(EINVAL);
}
} else
*type = 'g';
return 0;
}
static int of_add_metadata(OutputFile *of, AVFormatContext *oc,
const OptionsContext *o)
{
for (int i = 0; i < o->metadata.nb_opt; i++) {
AVDictionary **m;
char type, *val;
const char *stream_spec;
int index = 0, ret = 0;
val = strchr(o->metadata.opt[i].u.str, '=');
if (!val) {
av_log(of, AV_LOG_FATAL, "No '=' character in metadata string %s.\n",
o->metadata.opt[i].u.str);
return AVERROR(EINVAL);
}
*val++ = 0;
ret = parse_meta_type(of, o->metadata.opt[i].specifier, &type, &index, &stream_spec);
if (ret < 0)
return ret;
if (type == 's') {
for (int j = 0; j < oc->nb_streams; j++) {
OutputStream *ost = of->streams[j];
if ((ret = check_stream_specifier(oc, oc->streams[j], stream_spec)) > 0) {
#if FFMPEG_ROTATION_METADATA
if (!strcmp(o->metadata.opt[i].u.str, "rotate")) {
char *tail;
double theta = av_strtod(val, &tail);
if (!*tail) {
ost->rotate_overridden = 1;
ost->rotate_override_value = theta;
}
av_log(ost, AV_LOG_WARNING,
"Conversion of a 'rotate' metadata key to a "
"proper display matrix rotation is deprecated. "
"See -display_rotation for setting rotation "
"instead.");
} else {
#endif
av_dict_set(&oc->streams[j]->metadata, o->metadata.opt[i].u.str, *val ? val : NULL, 0);
#if FFMPEG_ROTATION_METADATA
}
#endif
} else if (ret < 0)
return ret;
}
} else {
switch (type) {
case 'g':
m = &oc->metadata;
break;
case 'c':
if (index < 0 || index >= oc->nb_chapters) {
av_log(of, AV_LOG_FATAL, "Invalid chapter index %d in metadata specifier.\n", index);
return AVERROR(EINVAL);
}
m = &oc->chapters[index]->metadata;
break;
case 'p':
if (index < 0 || index >= oc->nb_programs) {
av_log(of, AV_LOG_FATAL, "Invalid program index %d in metadata specifier.\n", index);
return AVERROR(EINVAL);
}
m = &oc->programs[index]->metadata;
break;
default:
av_log(of, AV_LOG_FATAL, "Invalid metadata specifier %s.\n", o->metadata.opt[i].specifier);
return AVERROR(EINVAL);
}
av_dict_set(m, o->metadata.opt[i].u.str, *val ? val : NULL, 0);
}
}
return 0;
}
static int copy_chapters(InputFile *ifile, OutputFile *ofile, AVFormatContext *os,
int copy_metadata)
{
AVFormatContext *is = ifile->ctx;
AVChapter **tmp;
int i;
tmp = av_realloc_f(os->chapters, is->nb_chapters + os->nb_chapters, sizeof(*os->chapters));
if (!tmp)
return AVERROR(ENOMEM);
os->chapters = tmp;
for (i = 0; i < is->nb_chapters; i++) {
AVChapter *in_ch = is->chapters[i], *out_ch;
int64_t start_time = (ofile->start_time == AV_NOPTS_VALUE) ? 0 : ofile->start_time;
int64_t ts_off = av_rescale_q(start_time - ifile->ts_offset,
AV_TIME_BASE_Q, in_ch->time_base);
int64_t rt = (ofile->recording_time == INT64_MAX) ? INT64_MAX :
av_rescale_q(ofile->recording_time, AV_TIME_BASE_Q, in_ch->time_base);
if (in_ch->end < ts_off)
continue;
if (rt != INT64_MAX && in_ch->start > rt + ts_off)
break;
out_ch = av_mallocz(sizeof(AVChapter));
if (!out_ch)
return AVERROR(ENOMEM);
out_ch->id = in_ch->id;
out_ch->time_base = in_ch->time_base;
out_ch->start = FFMAX(0, in_ch->start - ts_off);
out_ch->end = FFMIN(rt, in_ch->end - ts_off);
if (copy_metadata)
av_dict_copy(&out_ch->metadata, in_ch->metadata, 0);
os->chapters[os->nb_chapters++] = out_ch;
}
return 0;
}
static int copy_metadata(Muxer *mux, AVFormatContext *ic,
const char *outspec, const char *inspec,
int *metadata_global_manual, int *metadata_streams_manual,
int *metadata_chapters_manual)
{
AVFormatContext *oc = mux->fc;
AVDictionary **meta_in = NULL;
AVDictionary **meta_out = NULL;
int i, ret = 0;
char type_in, type_out;
const char *istream_spec = NULL, *ostream_spec = NULL;
int idx_in = 0, idx_out = 0;
ret = parse_meta_type(mux, inspec, &type_in, &idx_in, &istream_spec);
if (ret >= 0)
ret = parse_meta_type(mux, outspec, &type_out, &idx_out, &ostream_spec);
if (ret < 0)
return ret;
if (type_in == 'g' || type_out == 'g' || (!*outspec && !ic))
*metadata_global_manual = 1;
if (type_in == 's' || type_out == 's' || (!*outspec && !ic))
*metadata_streams_manual = 1;
if (type_in == 'c' || type_out == 'c' || (!*outspec && !ic))
*metadata_chapters_manual = 1;
/* ic is NULL when just disabling automatic mappings */
if (!ic)
return 0;
#define METADATA_CHECK_INDEX(index, nb_elems, desc)\
if ((index) < 0 || (index) >= (nb_elems)) {\
av_log(mux, AV_LOG_FATAL, "Invalid %s index %d while processing metadata maps.\n",\
(desc), (index));\
return AVERROR(EINVAL);\
}
#define SET_DICT(type, meta, context, index)\
switch (type) {\
case 'g':\
meta = &context->metadata;\
break;\
case 'c':\
METADATA_CHECK_INDEX(index, context->nb_chapters, "chapter")\
meta = &context->chapters[index]->metadata;\
break;\
case 'p':\
METADATA_CHECK_INDEX(index, context->nb_programs, "program")\
meta = &context->programs[index]->metadata;\
break;\
case 's':\
break; /* handled separately below */ \
default: av_assert0(0);\
}\
SET_DICT(type_in, meta_in, ic, idx_in);
SET_DICT(type_out, meta_out, oc, idx_out);
/* for input streams choose first matching stream */
if (type_in == 's') {
for (i = 0; i < ic->nb_streams; i++) {
if ((ret = check_stream_specifier(ic, ic->streams[i], istream_spec)) > 0) {
meta_in = &ic->streams[i]->metadata;
break;
} else if (ret < 0)
return ret;
}
if (!meta_in) {
av_log(mux, AV_LOG_FATAL, "Stream specifier %s does not match any streams.\n", istream_spec);
return AVERROR(EINVAL);
}
}
if (type_out == 's') {
for (i = 0; i < oc->nb_streams; i++) {
if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
meta_out = &oc->streams[i]->metadata;
av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
} else if (ret < 0)
return ret;
}
} else
av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);
return 0;
}
static int copy_meta(Muxer *mux, const OptionsContext *o)
{
OutputFile *of = &mux->of;
AVFormatContext *oc = mux->fc;
int chapters_input_file = o->chapters_input_file;
int metadata_global_manual = 0;
int metadata_streams_manual = 0;
int metadata_chapters_manual = 0;
int ret;
/* copy metadata */
for (int i = 0; i < o->metadata_map.nb_opt; i++) {
char *p;
int in_file_index = strtol(o->metadata_map.opt[i].u.str, &p, 0);
if (in_file_index >= nb_input_files) {
av_log(mux, AV_LOG_FATAL, "Invalid input file index %d while "
"processing metadata maps\n", in_file_index);
return AVERROR(EINVAL);
}
ret = copy_metadata(mux,
in_file_index >= 0 ? input_files[in_file_index]->ctx : NULL,
o->metadata_map.opt[i].specifier, *p ? p + 1 : p,
&metadata_global_manual, &metadata_streams_manual,
&metadata_chapters_manual);
if (ret < 0)
return ret;
}
/* copy chapters */
if (chapters_input_file >= nb_input_files) {
if (chapters_input_file == INT_MAX) {
/* copy chapters from the first input file that has them*/
chapters_input_file = -1;
for (int i = 0; i < nb_input_files; i++)
if (input_files[i]->ctx->nb_chapters) {
chapters_input_file = i;
break;
}
} else {
av_log(mux, AV_LOG_FATAL, "Invalid input file index %d in chapter mapping.\n",
chapters_input_file);
return AVERROR(EINVAL);
}
}
if (chapters_input_file >= 0)
copy_chapters(input_files[chapters_input_file], of, oc,
!metadata_chapters_manual);
/* copy global metadata by default */
if (!metadata_global_manual && nb_input_files){
av_dict_copy(&oc->metadata, input_files[0]->ctx->metadata,
AV_DICT_DONT_OVERWRITE);
if (of->recording_time != INT64_MAX)
av_dict_set(&oc->metadata, "duration", NULL, 0);
av_dict_set(&oc->metadata, "creation_time", NULL, 0);
av_dict_set(&oc->metadata, "company_name", NULL, 0);
av_dict_set(&oc->metadata, "product_name", NULL, 0);
av_dict_set(&oc->metadata, "product_version", NULL, 0);
}
if (!metadata_streams_manual)
for (int i = 0; i < of->nb_streams; i++) {
OutputStream *ost = of->streams[i];
if (!ost->ist) /* this is true e.g. for attached files */
continue;
av_dict_copy(&ost->st->metadata, ost->ist->st->metadata, AV_DICT_DONT_OVERWRITE);
if (ost->enc_ctx) {
av_dict_set(&ost->st->metadata, "encoder", NULL, 0);
}
}
return 0;
}
static int set_dispositions(Muxer *mux, const OptionsContext *o)
{
OutputFile *of = &mux->of;
AVFormatContext *ctx = mux->fc;
// indexed by type+1, because AVMEDIA_TYPE_UNKNOWN=-1
int nb_streams[AVMEDIA_TYPE_NB + 1] = { 0 };
int have_default[AVMEDIA_TYPE_NB + 1] = { 0 };
int have_manual = 0;
int ret = 0;
const char **dispositions;
dispositions = av_calloc(ctx->nb_streams, sizeof(*dispositions));
if (!dispositions)
return AVERROR(ENOMEM);
// first, copy the input dispositions
for (int i = 0; i < ctx->nb_streams; i++) {
OutputStream *ost = of->streams[i];
nb_streams[ost->type + 1]++;
MATCH_PER_STREAM_OPT(disposition, str, dispositions[i], ctx, ost->st);
have_manual |= !!dispositions[i];
if (ost->ist) {
ost->st->disposition = ost->ist->st->disposition;
if (ost->st->disposition & AV_DISPOSITION_DEFAULT)
have_default[ost->type + 1] = 1;
}
}
if (have_manual) {
// process manually set dispositions - they override the above copy
for (int i = 0; i < ctx->nb_streams; i++) {
OutputStream *ost = of->streams[i];
const char *disp = dispositions[i];
if (!disp)
continue;
ret = av_opt_set(ost->st, "disposition", disp, 0);
if (ret < 0)
goto finish;
}
} else {
// For each media type with more than one stream, find a suitable stream to
// mark as default, unless one is already marked default.
// "Suitable" means the first of that type, skipping attached pictures.
for (int i = 0; i < ctx->nb_streams; i++) {
OutputStream *ost = of->streams[i];
enum AVMediaType type = ost->type;
if (nb_streams[type + 1] < 2 || have_default[type + 1] ||
ost->st->disposition & AV_DISPOSITION_ATTACHED_PIC)
continue;
ost->st->disposition |= AV_DISPOSITION_DEFAULT;
have_default[type + 1] = 1;
}
}
finish:
av_freep(&dispositions);
return ret;
}
const char *const forced_keyframes_const_names[] = {
"n",
"n_forced",
"prev_forced_n",
"prev_forced_t",
"t",
NULL
};
static int compare_int64(const void *a, const void *b)
{
return FFDIFFSIGN(*(const int64_t *)a, *(const int64_t *)b);
}
static int parse_forced_key_frames(void *log, KeyframeForceCtx *kf,
const Muxer *mux, const char *spec)
{
const char *p;
int n = 1, i, ret, size, index = 0;
int64_t t, *pts;
for (p = spec; *p; p++)
if (*p == ',')
n++;
size = n;
pts = av_malloc_array(size, sizeof(*pts));
if (!pts)
return AVERROR(ENOMEM);
p = spec;
for (i = 0; i < n; i++) {
char *next = strchr(p, ',');
if (next)
*next++ = 0;
if (strstr(p, "chapters") == p) {
AVChapter * const *ch = mux->fc->chapters;
unsigned int nb_ch = mux->fc->nb_chapters;
int j;
if (nb_ch > INT_MAX - size ||
!(pts = av_realloc_f(pts, size += nb_ch - 1,
sizeof(*pts))))
return AVERROR(ENOMEM);
if (p[8]) {
ret = av_parse_time(&t, p + 8, 1);
if (ret < 0) {
av_log(log, AV_LOG_ERROR,
"Invalid chapter time offset: %s\n", p + 8);
goto fail;
}
} else
t = 0;
for (j = 0; j < nb_ch; j++) {
const AVChapter *c = ch[j];
av_assert1(index < size);
pts[index++] = av_rescale_q(c->start, c->time_base,
AV_TIME_BASE_Q) + t;
}
} else {
av_assert1(index < size);
ret = av_parse_time(&t, p, 1);
if (ret < 0) {
av_log(log, AV_LOG_ERROR, "Invalid keyframe time: %s\n", p);
goto fail;
}
pts[index++] = t;
}
p = next;
}
av_assert0(index == size);
qsort(pts, size, sizeof(*pts), compare_int64);
kf->nb_pts = size;
kf->pts = pts;
return 0;
fail:
av_freep(&pts);
return ret;
}
static int process_forced_keyframes(Muxer *mux, const OptionsContext *o)
{
for (int i = 0; i < mux->of.nb_streams; i++) {
OutputStream *ost = mux->of.streams[i];
const char *forced_keyframes = NULL;
MATCH_PER_STREAM_OPT(forced_key_frames, str, forced_keyframes, mux->fc, ost->st);
if (!(ost->type == AVMEDIA_TYPE_VIDEO &&
ost->enc_ctx && forced_keyframes))
continue;
if (!strncmp(forced_keyframes, "expr:", 5)) {
int ret = av_expr_parse(&ost->kf.pexpr, forced_keyframes + 5,
forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
if (ret < 0) {
av_log(ost, AV_LOG_ERROR,
"Invalid force_key_frames expression '%s'\n", forced_keyframes + 5);
return ret;
}
ost->kf.expr_const_values[FKF_N] = 0;
ost->kf.expr_const_values[FKF_N_FORCED] = 0;
ost->kf.expr_const_values[FKF_PREV_FORCED_N] = NAN;
ost->kf.expr_const_values[FKF_PREV_FORCED_T] = NAN;
// Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
// parse it only for static kf timings
} else if (!strcmp(forced_keyframes, "source")) {
ost->kf.type = KF_FORCE_SOURCE;
#if FFMPEG_OPT_FORCE_KF_SOURCE_NO_DROP
} else if (!strcmp(forced_keyframes, "source_no_drop")) {
av_log(ost, AV_LOG_WARNING, "The 'source_no_drop' value for "
"-force_key_frames is deprecated, use just 'source'\n");
ost->kf.type = KF_FORCE_SOURCE;
#endif
} else {
int ret = parse_forced_key_frames(ost, &ost->kf, mux, forced_keyframes);
if (ret < 0)
return ret;
}
}
return 0;
}
static int validate_enc_avopt(Muxer *mux, const AVDictionary *codec_avopt)
{
const AVClass *class = avcodec_get_class();
const AVClass *fclass = avformat_get_class();
const OutputFile *of = &mux->of;
AVDictionary *unused_opts;
const AVDictionaryEntry *e;
unused_opts = strip_specifiers(codec_avopt);
for (int i = 0; i < of->nb_streams; i++) {
e = NULL;
while ((e = av_dict_iterate(of->streams[i]->encoder_opts, e)))
av_dict_set(&unused_opts, e->key, NULL, 0);
}
e = NULL;
while ((e = av_dict_iterate(unused_opts, e))) {
const AVOption *option = av_opt_find(&class, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
const AVOption *foption = av_opt_find(&fclass, e->key, NULL, 0,
AV_OPT_SEARCH_CHILDREN | AV_OPT_SEARCH_FAKE_OBJ);
if (!option || foption)
continue;
if (!(option->flags & AV_OPT_FLAG_ENCODING_PARAM)) {
av_log(mux, AV_LOG_ERROR, "Codec AVOption %s (%s) is not an "
"encoding option.\n", e->key, option->help ? option->help : "");
return AVERROR(EINVAL);
}
// gop_timecode is injected by generic code but not always used
if (!strcmp(e->key, "gop_timecode"))
continue;
av_log(mux, AV_LOG_WARNING, "Codec AVOption %s (%s) has not been used "
"for any stream. The most likely reason is either wrong type "
"(e.g. a video option with no video streams) or that it is a "
"private option of some encoder which was not actually used for "
"any stream.\n", e->key, option->help ? option->help : "");
}
av_dict_free(&unused_opts);
return 0;
}
static const char *output_file_item_name(void *obj)
{
const Muxer *mux = obj;
return mux->log_name;
}
static const AVClass output_file_class = {
.class_name = "OutputFile",
.version = LIBAVUTIL_VERSION_INT,
.item_name = output_file_item_name,
.category = AV_CLASS_CATEGORY_MUXER,
};
static Muxer *mux_alloc(void)
{
Muxer *mux = allocate_array_elem(&output_files, sizeof(*mux), &nb_output_files);
if (!mux)
return NULL;
mux->of.class = &output_file_class;
mux->of.index = nb_output_files - 1;
snprintf(mux->log_name, sizeof(mux->log_name), "out#%d", mux->of.index);
return mux;
}
int of_open(const OptionsContext *o, const char *filename, Scheduler *sch)
{
Muxer *mux;
AVFormatContext *oc;
int err;
OutputFile *of;
int64_t recording_time = o->recording_time;
int64_t stop_time = o->stop_time;
mux = mux_alloc();
if (!mux)
return AVERROR(ENOMEM);
of = &mux->of;
if (stop_time != INT64_MAX && recording_time != INT64_MAX) {
stop_time = INT64_MAX;
av_log(mux, AV_LOG_WARNING, "-t and -to cannot be used together; using -t.\n");
}
if (stop_time != INT64_MAX && recording_time == INT64_MAX) {
int64_t start_time = o->start_time == AV_NOPTS_VALUE ? 0 : o->start_time;
if (stop_time <= start_time) {
av_log(mux, AV_LOG_ERROR, "-to value smaller than -ss; aborting.\n");
return AVERROR(EINVAL);
} else {
recording_time = stop_time - start_time;
}
}
of->recording_time = recording_time;
of->start_time = o->start_time;
of->shortest = o->shortest;
mux->limit_filesize = o->limit_filesize;
av_dict_copy(&mux->opts, o->g->format_opts, 0);
if (!strcmp(filename, "-"))
filename = "pipe:";
err = avformat_alloc_output_context2(&oc, NULL, o->format, filename);
if (!oc) {
av_log(mux, AV_LOG_FATAL, "Error initializing the muxer for %s: %s\n",
filename, av_err2str(err));
return err;
}
mux->fc = oc;
av_strlcat(mux->log_name, "/", sizeof(mux->log_name));
av_strlcat(mux->log_name, oc->oformat->name, sizeof(mux->log_name));
of->format = oc->oformat;
if (recording_time != INT64_MAX)
oc->duration = recording_time;
oc->interrupt_callback = int_cb;
if (o->bitexact) {
oc->flags |= AVFMT_FLAG_BITEXACT;
of->bitexact = 1;
} else {
of->bitexact = check_opt_bitexact(oc, mux->opts, "fflags",
AVFMT_FLAG_BITEXACT);
}
err = sch_add_mux(sch, muxer_thread, mux_check_init, mux,
!strcmp(oc->oformat->name, "rtp"), o->thread_queue_size);
if (err < 0)
return err;
mux->sch = sch;
mux->sch_idx = err;
/* create all output streams for this file */
err = create_streams(mux, o);
if (err < 0)
return err;
/* check if all codec options have been used */
err = validate_enc_avopt(mux, o->g->codec_opts);
if (err < 0)
return err;
/* check filename in case of an image number is expected */
if (oc->oformat->flags & AVFMT_NEEDNUMBER && !av_filename_number_test(oc->url)) {
av_log(mux, AV_LOG_FATAL,
"Output filename '%s' does not contain a numeric pattern like "
"'%%d', which is required by output format '%s'.\n",
oc->url, oc->oformat->name);
return AVERROR(EINVAL);
}
if (!(oc->oformat->flags & AVFMT_NOFILE)) {
/* test if it already exists to avoid losing precious files */
err = assert_file_overwrite(filename);
if (err < 0)
return err;
/* open the file */
if ((err = avio_open2(&oc->pb, filename, AVIO_FLAG_WRITE,
&oc->interrupt_callback,
&mux->opts)) < 0) {
av_log(mux, AV_LOG_FATAL, "Error opening output %s: %s\n",
filename, av_err2str(err));
return err;
}
} else if (strcmp(oc->oformat->name, "image2")==0 && !av_filename_number_test(filename)) {
err = assert_file_overwrite(filename);
if (err < 0)
return err;
}
if (o->mux_preload) {
av_dict_set_int(&mux->opts, "preload", o->mux_preload*AV_TIME_BASE, 0);
}
oc->max_delay = (int)(o->mux_max_delay * AV_TIME_BASE);
/* copy metadata and chapters from input files */
err = copy_meta(mux, o);
if (err < 0)
return err;
err = of_add_groups(mux, o);
if (err < 0)
return err;
err = of_add_programs(mux, o);
if (err < 0)
return err;
err = of_add_metadata(of, oc, o);
if (err < 0)
return err;
err = set_dispositions(mux, o);
if (err < 0) {
av_log(mux, AV_LOG_FATAL, "Error setting output stream dispositions\n");
return err;
}
// parse forced keyframe specifications;
// must be done after chapters are created
err = process_forced_keyframes(mux, o);
if (err < 0) {
av_log(mux, AV_LOG_FATAL, "Error processing forced keyframes\n");
return err;
}
err = setup_sync_queues(mux, oc, o->shortest_buf_duration * AV_TIME_BASE);
if (err < 0) {
av_log(mux, AV_LOG_FATAL, "Error setting up output sync queues\n");
return err;
}
of->url = filename;
/* initialize streamcopy streams. */
for (int i = 0; i < of->nb_streams; i++) {
OutputStream *ost = of->streams[i];
if (!ost->enc) {
err = of_stream_init(of, ost);
if (err < 0)
return err;
}
}
return 0;
}
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