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avformat/dashenc: Addition of #EXT-X-MEDIA tag and AUDIO attribute 

This is required for AV playout from master.m3u8.
Otherwise master.m3u8 lists only video-only and/or audio-only streams.

Reviewed-by: Steven Liu <lq@chinaffmpeg.org>
This commit is contained in:
Karthick Jeyapal 2017-12-29 13:47:53 +08:00 committed by Steven Liu
parent 8fd2bdd072
commit 5297ae96a1
1 changed files with 22 additions and 2 deletions
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24
libavformat/dashenc.c
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@ -737,6 +737,9 @@ static int write_manifest(AVFormatContext *s, int final)
if (c->hls_playlist && !c->master_playlist_created) {
char filename_hls[1024];
const char *audio_group = "A1";
int is_default = 1;
int max_audio_bitrate = 0;
if (*c->dirname)
snprintf(filename_hls, sizeof(filename_hls), "%s/master.m3u8", c->dirname);
@ -758,9 +761,26 @@ static int write_manifest(AVFormatContext *s, int final)
for (i = 0; i < s->nb_streams; i++) {
char playlist_file[64];
AVStream *st = s->streams[i];
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
continue;
get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
ff_hls_write_stream_info(st, out, st->codecpar->bit_rate,
playlist_file, NULL);
ff_hls_write_audio_rendition(out, (char *)audio_group,
playlist_file, i, is_default);
max_audio_bitrate = FFMAX(st->codecpar->bit_rate, max_audio_bitrate);
is_default = 0;
}
for (i = 0; i < s->nb_streams; i++) {
char playlist_file[64];
AVStream *st = s->streams[i];
char *agroup = NULL;
int stream_bitrate = st->codecpar->bit_rate;
if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && max_audio_bitrate) {
agroup = (char *)audio_group;
stream_bitrate += max_audio_bitrate;
}
get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
ff_hls_write_stream_info(st, out, stream_bitrate, playlist_file, agroup);
}
avio_close(out);
if (use_rename)