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Completely rework ALSA device selection code: choose the device to open depending on the requested number of channels and channel map. In most cases it will now suffice to set default-channels=6 to enable 5.1 sound for all devices that support it

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@2050 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-11-13 17:37:44 +00:00
parent f752882525
commit d17bb53d3e
15 changed files with 350 additions and 122 deletions
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29
src/modules/alsa-util.h
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@ -38,10 +38,37 @@ struct pa_alsa_fdlist *pa_alsa_fdlist_new(void);
void pa_alsa_fdlist_free(struct pa_alsa_fdlist *fdl);
int pa_alsa_fdlist_set_mixer(struct pa_alsa_fdlist *fdl, snd_mixer_t *mixer_handle, pa_mainloop_api* m);
int pa_alsa_set_hw_params(snd_pcm_t *pcm_handle, pa_sample_spec *ss, uint32_t *periods, snd_pcm_uframes_t *period_size, int *use_mmap);
int pa_alsa_set_hw_params(
snd_pcm_t *pcm_handle,
pa_sample_spec *ss,
uint32_t *periods,
snd_pcm_uframes_t *period_size,
pa_bool_t *use_mmap,
pa_bool_t require_exact_channel_number);
int pa_alsa_set_sw_params(snd_pcm_t *pcm);
int pa_alsa_prepare_mixer(snd_mixer_t *mixer, const char *dev);
snd_mixer_elem_t *pa_alsa_find_elem(snd_mixer_t *mixer, const char *name, const char *fallback);
snd_pcm_t *pa_alsa_open_by_device_id(
const char *dev_id,
char **dev,
pa_sample_spec *ss,
pa_channel_map* map,
int mode,
uint32_t *nfrags,
snd_pcm_uframes_t *period_size,
pa_bool_t *use_mmap);
snd_pcm_t *pa_alsa_open_by_device_string(
const char *device,
char **dev,
pa_sample_spec *ss,
pa_channel_map* map,
int mode,
uint32_t *nfrags,
snd_pcm_uframes_t *period_size,
pa_bool_t *use_mmap);
#endif