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avformat/mpegtsenc: Preserve disposition in the absence of language 

Implements ticket #9113.

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-04-03 07:14:40 +02:00
parent 0617e578a3
commit 5d06d26be3
1 changed files with 8 additions and 9 deletions
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17
libavformat/mpegtsenc.c
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@ -459,6 +459,8 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
AVStream *st = s->streams[i];
MpegTSWriteStream *ts_st = st->priv_data;
AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
const char default_language[] = "und";
const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
enum AVCodecID codec_id = st->codecpar->codec_id;
if (s->nb_programs) {
@ -598,16 +600,18 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
}
}
if (lang) {
char *p;
char *next = lang->value;
if (language != default_language ||
st->disposition & (AV_DISPOSITION_CLEAN_EFFECTS |
AV_DISPOSITION_HEARING_IMPAIRED |
AV_DISPOSITION_VISUAL_IMPAIRED)) {
const char *p, *next;
uint8_t *len_ptr;
*q++ = ISO_639_LANGUAGE_DESCRIPTOR;
len_ptr = q++;
*len_ptr = 0;
for (p = lang->value; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
for (p = next = language; next && *len_ptr < 255 / 4 * 4; p = next + 1) {
if (q - data > SECTION_LENGTH - 4) {
err = 1;
break;
@ -637,10 +641,6 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
}
break;
case AVMEDIA_TYPE_SUBTITLE:
{
const char default_language[] = "und";
const char *language = lang && strlen(lang->value) >= 3 ? lang->value : default_language;
if (codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
uint8_t *len_ptr;
int extradata_copied = 0;
@ -715,7 +715,6 @@ static int mpegts_write_pmt(AVFormatContext *s, MpegTSService *service)
*len_ptr = q - len_ptr - 1;
}
}
break;
case AVMEDIA_TYPE_VIDEO:
if (stream_type == STREAM_TYPE_VIDEO_DIRAC) {