static const char *lookup_tag(int type, uint32_t tag)
{
for (int n = 0; mp_codec_tags[n].codec; n++) {
if (mp_codec_tags[n].tag == tag)
return mp_codec_tags[n].codec;
}
const struct AVCodecTag *av_tags[3] = {0};
switch (type) {
case STREAM_VIDEO: {
av_tags[0] = avformat_get_riff_video_tags();
#if HAVE_QT_TAGS
av_tags[1] = avformat_get_mov_video_tags();
#endif
break;
}
case STREAM_AUDIO: {
av_tags[0] = avformat_get_riff_audio_tags();
#if HAVE_QT_TAGS
av_tags[1] = avformat_get_mov_audio_tags();
#endif
break;
}
}
int id = av_codec_get_id(av_tags, tag);
return id == AV_CODEC_ID_NONE ? NULL : mp_codec_from_av_codec_id(id);
}
static void add_decoders(struct mp_decoder_list *list)
{
for (int n = 0; codecs[n] != AV_CODEC_ID_NONE; n++) {
const char *format = mp_codec_from_av_codec_id(codecs[n]);
if (format) {
mp_add_decoder(list, "spdif", format, format,
"libavformat/spdifenc audio pass-through decoder");
}
}
}
static const char *lookup_tag(const struct mp_codec_tag *mp_table,
const struct AVCodecTag *av_table,
uint32_t tag)
{
for (int n = 0; mp_table[n].codec; n++) {
if (mp_table[n].tag == tag)
return mp_table[n].codec;
}
const struct AVCodecTag *av_tags[] = {av_table, NULL};
int id = av_codec_get_id(av_tags, tag);
return id == AV_CODEC_ID_NONE ? NULL : mp_codec_from_av_codec_id(id);
}
// (Abuses the decoder list data structures.)
void mp_add_lavc_encoders(struct mp_decoder_list *list)
{
AVCodec *cur = NULL;
for (;;) {
cur = av_codec_next(cur);
if (!cur)
break;
if (av_codec_is_encoder(cur)) {
mp_add_decoder(list, "lavc", mp_codec_from_av_codec_id(cur->id),
cur->name, cur->long_name);
}
}
}
void mp_add_lavc_decoders(struct mp_decoder_list *list, enum AVMediaType type)
{
AVCodec *cur = NULL;
for (;;) {
cur = av_codec_next(cur);
if (!cur)
break;
if (av_codec_is_decoder(cur) && cur->type == type && !is_crap(cur)) {
mp_add_decoder(list, "lavc", mp_codec_from_av_codec_id(cur->id),
cur->name, cur->long_name);
}
}
}
static void add_codecs(struct mp_decoder_list *list, enum AVMediaType type,
bool decoders)
{
void *iter = NULL;
for (;;) {
const AVCodec *cur = av_codec_iterate(&iter);
if (!cur)
break;
if (av_codec_is_decoder(cur) == decoders &&
(type == AVMEDIA_TYPE_UNKNOWN || cur->type == type))
{
mp_add_decoder(list, mp_codec_from_av_codec_id(cur->id),
cur->name, cur->long_name);
}
}
}
