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spa: make a function to make a channel short name

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Make a function that can generate and parse a short name for
the positions that are not in the type list, like the AUX channels.
This commit is contained in:
Wim Taymans 2025-10-22 13:04:53 +02:00
parent 7177f8269d
commit 11f1298f53
16 changed files with 74 additions and 38 deletions
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24
spa/include/spa/param/audio/raw-types.h
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@ -267,12 +267,34 @@ static const struct spa_type_info spa_type_audio_channel[] = {
SPA_API_AUDIO_RAW_TYPES uint32_t spa_type_audio_channel_from_short_name(const char *name)
{
return spa_type_from_short_name(name, spa_type_audio_channel, SPA_AUDIO_CHANNEL_UNKNOWN);
uint32_t res;
if (spa_strstartswith(name, "AUX")) {
if (spa_atou32(name+3, &res, 10) && res < 0x1000)
res = SPA_AUDIO_CHANNEL_AUX0 + res;
else
res = SPA_AUDIO_CHANNEL_UNKNOWN;
} else {
res = spa_type_from_short_name(name, spa_type_audio_channel, SPA_AUDIO_CHANNEL_UNKNOWN);
}
return res;
}
SPA_API_AUDIO_RAW_TYPES const char * spa_type_audio_channel_to_short_name(uint32_t type)
{
return spa_type_to_short_name(type, spa_type_audio_channel, "UNK");
}
SPA_API_AUDIO_RAW_TYPES const char * spa_type_audio_channel_make_short_name(uint32_t type,
char *buf, size_t size, const char *unknown)
{
if (SPA_AUDIO_CHANNEL_IS_AUX(type)) {
snprintf(buf, size, "AUX%u", type - SPA_AUDIO_CHANNEL_AUX0);
} else {
const char *str = spa_type_to_short_name(type, spa_type_audio_channel, NULL);
if (str == NULL)
return unknown;
snprintf(buf, size, "%.7s", str);
}
return buf;
}
#define SPA_TYPE_INFO_AudioVolumeRampScale SPA_TYPE_INFO_ENUM_BASE "AudioVolumeRampScale"
#define SPA_TYPE_INFO_AUDIO_VOLUME_RAMP_SCALE_BASE SPA_TYPE_INFO_AudioVolumeRampScale ":"