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pulse: try hard to always create a valid channel map

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Unknown channel names are mapped to aux channels.
Add extra AUX channels when we don't know the channel layout.
This makes sure apps always receive valid channel layouts so they
don't abort (pactl).
This commit is contained in:
Wim Taymans 2020-09-14 11:06:11 +02:00
parent 320e63fe48
commit 67f4acaf1d
3 changed files with 19 additions and 13 deletions
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11
pipewire-pulseaudio/src/core-format.c
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@ -128,14 +128,14 @@ static inline uint32_t channel_pa2id(pa_channel_position_t channel)
return audio_channels[channel];
}
static inline pa_channel_position_t channel_id2pa(uint32_t id)
static inline pa_channel_position_t channel_id2pa(uint32_t id, uint32_t *aux)
{
size_t i;
for (i = 0; i < SPA_N_ELEMENTS(audio_channels); i++) {
if (id == audio_channels[i])
return i;
}
return PA_CHANNEL_POSITION_INVALID;
return PA_CHANNEL_POSITION_AUX0 + (*aux)++;
}
SPA_EXPORT
@ -362,7 +362,7 @@ int pa_format_info_to_sample_spec_fake(const pa_format_info *f, pa_sample_spec *
int pa_format_parse_param(const struct spa_pod *param, pa_sample_spec *spec, pa_channel_map *map)
{
struct spa_audio_info info = { 0 };
uint32_t i;
uint32_t i, aux;
if (param == NULL)
return -EINVAL;
@ -383,13 +383,14 @@ int pa_format_parse_param(const struct spa_pod *param, pa_sample_spec *spec, pa_
spec->rate = info.info.raw.rate;
spec->channels = info.info.raw.channels;
aux = 0;
pa_channel_map_init(map);
map->channels = info.info.raw.channels;
for (i = 0; i < info.info.raw.channels; i++)
map->map[i] = channel_id2pa(info.info.raw.position[i]);
map->map[i] = channel_id2pa(info.info.raw.position[i], &aux);
if (!pa_channel_map_valid(map))
pa_channel_map_init_auto(map, info.info.raw.channels, PA_CHANNEL_MAP_DEFAULT);
pa_channel_map_init_extend(map, info.info.raw.channels, PA_CHANNEL_MAP_OSS);
return 0;
}