/*----------------------------------------------------------------------------
** ALSA_AddCommonDevice
**
** Perform Alsa initialization common to both capture and playback
**
** Side Effect: ww->pcname and ww->ctlname may need to be freed.
**
** Note: this was originally coded by using snd_pcm_name(pcm), until
** I discovered that with at least one version of alsa lib,
** the use of a pcm named default:0 would cause snd_pcm_name() to fail.
** So passing the name in is logically extraneous. Sigh.
*/
static int ALSA_AddCommonDevice(snd_ctl_t *ctl, snd_pcm_t *pcm, const char *pcmname, WINE_WAVEDEV *ww)
{
snd_pcm_info_t *infop;
int rc;
infop = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof() );
if ((rc = snd_pcm_info(pcm, infop)) < 0)
{
HeapFree( GetProcessHeap(), 0, infop );
return rc;
}
if (pcm && pcmname)
ww->pcmname = ALSA_strdup(pcmname);
else
{
HeapFree( GetProcessHeap(), 0, infop );
return -1;
}
if (ctl && snd_ctl_name(ctl))
ww->ctlname = ALSA_strdup(snd_ctl_name(ctl));
strcpy(ww->interface_name, "winealsa: ");
memcpy(ww->interface_name + strlen(ww->interface_name),
ww->pcmname,
min(strlen(ww->pcmname), sizeof(ww->interface_name) - strlen("winealsa: ")));
strcpy(ww->ds_desc.szDrvname, "winealsa.drv");
memcpy(ww->ds_desc.szDesc, snd_pcm_info_get_name(infop),
min( (sizeof(ww->ds_desc.szDesc) - 1), strlen(snd_pcm_info_get_name(infop))) );
ww->ds_caps.dwMinSecondarySampleRate = DSBFREQUENCY_MIN;
ww->ds_caps.dwMaxSecondarySampleRate = DSBFREQUENCY_MAX;
ww->ds_caps.dwPrimaryBuffers = 1;
HeapFree( GetProcessHeap(), 0, infop );
return 0;
}
static int handle_event(int hwdep_fd, snd_ctl_t *ctl)
{
snd_ctl_event_t *event;
unsigned int mask;
int err;
snd_ctl_event_alloca(&event);
err = snd_ctl_read(ctl, event);
if (err < 0) {
fprintf(stderr, "Cannot read event from ctl %s\n", snd_ctl_name(ctl));
return err;
}
if (snd_ctl_event_get_type(event) != SND_CTL_EVENT_ELEM) {
return 0;
}
// Filter events
mask = snd_ctl_event_elem_get_mask(event);
if (mask & SND_CTL_EVENT_MASK_VALUE) {
const char *event_name = snd_ctl_event_elem_get_name(event);
if (!strcmp(event_name, HEADPHONE_SWITCH_NAME)) {
// If headphones were plugged, mute LFE
set_headphones_plugged(&headphones_plugged);
if (headphones_plugged) {
set_lfe_volume(hwdep_fd, 0);
}
} else if (!headphones_plugged && !strcmp(event_name, MASTER_VOLUME_NAME)) {
// If headphones are unplugged and master volume changed, adjust LFE volume
set_lfe_volume(hwdep_fd, get_master_volume());
}
}
return 0;
}
/**
* \brief get identifier of HCTL handle
* \param hctl HCTL handle
* \return ascii identifier of HCTL handle
*
* Returns the ASCII identifier of given HCTL handle. It's the same
* identifier specified in snd_hctl_open().
*/
const char *snd_hctl_name(snd_hctl_t *hctl)
{
assert(hctl);
return snd_ctl_name(hctl->ctl);
}
/*----------------------------------------------------------------------------
** ALSA_ComputeCaps
**
** Given an ALSA PCM, figure out our HW CAPS structure info.
** ctl can be null, pcm is required, as is all output parms.
**
*/
static int ALSA_ComputeCaps(snd_ctl_t *ctl, snd_pcm_t *pcm,
WORD *channels, DWORD *flags, DWORD *formats, DWORD *supports)
{
snd_pcm_hw_params_t *hw_params;
snd_pcm_format_mask_t *fmask;
snd_pcm_access_mask_t *acmask;
unsigned int ratemin = 0;
unsigned int ratemax = 0;
unsigned int chmin = 0;
unsigned int chmax = 0;
int rc, dir = 0;
hw_params = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_hw_params_sizeof() );
fmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof() );
acmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_access_mask_sizeof() );
if ((rc = snd_pcm_hw_params_any(pcm, hw_params)) < 0) goto done;
snd_pcm_hw_params_get_format_mask(hw_params, fmask);
if ((rc = snd_pcm_hw_params_get_access_mask(hw_params, acmask)) < 0) goto done;
if ((rc = snd_pcm_hw_params_get_rate_min(hw_params, &ratemin, &dir)) < 0) goto done;
if ((rc = snd_pcm_hw_params_get_rate_max(hw_params, &ratemax, &dir)) < 0) goto done;
if ((rc = snd_pcm_hw_params_get_channels_min(hw_params, &chmin)) < 0) goto done;
if ((rc = snd_pcm_hw_params_get_channels_max(hw_params, &chmax)) < 0) goto done;
#define X(r,v) \
if ( (r) >= ratemin && ( (r) <= ratemax || ratemax == -1) ) \
{ \
if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_U8)) \
{ \
if (chmin <= 1 && 1 <= chmax) \
*formats |= WAVE_FORMAT_##v##M08; \
if (chmin <= 2 && 2 <= chmax) \
*formats |= WAVE_FORMAT_##v##S08; \
} \
if (snd_pcm_format_mask_test( fmask, SND_PCM_FORMAT_S16_LE)) \
{ \
if (chmin <= 1 && 1 <= chmax) \
*formats |= WAVE_FORMAT_##v##M16; \
if (chmin <= 2 && 2 <= chmax) \
*formats |= WAVE_FORMAT_##v##S16; \
} \
}
X(11025,1);
X(22050,2);
X(44100,4);
X(48000,48);
X(96000,96);
#undef X
if (chmin > 1)
FIXME("Device has a minimum of %d channels\n", chmin);
*channels = chmax;
/* FIXME: is sample accurate always true ?
** Can we do WAVECAPS_PITCH, WAVECAPS_SYNC, or WAVECAPS_PLAYBACKRATE? */
*supports |= WAVECAPS_SAMPLEACCURATE;
*supports |= WAVECAPS_DIRECTSOUND;
/* check for volume control support */
if (ctl) {
if (snd_ctl_name(ctl))
{
snd_hctl_t *hctl;
if (snd_hctl_open(&hctl, snd_ctl_name(ctl), 0) >= 0)
{
snd_hctl_load(hctl);
if (!ALSA_CheckSetVolume( hctl, NULL, NULL, NULL, NULL, NULL, NULL, NULL ))
{
*supports |= WAVECAPS_VOLUME;
if (chmin <= 2 && 2 <= chmax)
*supports |= WAVECAPS_LRVOLUME;
}
snd_hctl_free(hctl);
snd_hctl_close(hctl);
}
}
}
*flags = DSCAPS_CERTIFIED | DSCAPS_CONTINUOUSRATE;
*flags |= DSCAPS_SECONDARYMONO | DSCAPS_SECONDARYSTEREO;
*flags |= DSCAPS_SECONDARY8BIT | DSCAPS_SECONDARY16BIT;
if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
WAVE_FORMAT_96M08 | WAVE_FORMAT_1M16 |
WAVE_FORMAT_2M16 | WAVE_FORMAT_4M16 |
WAVE_FORMAT_48M16 | WAVE_FORMAT_96M16) )
*flags |= DSCAPS_PRIMARYMONO;
if (*formats & (WAVE_FORMAT_1S08 | WAVE_FORMAT_2S08 |
WAVE_FORMAT_4S08 | WAVE_FORMAT_48S08 |
WAVE_FORMAT_96S08 | WAVE_FORMAT_1S16 |
WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
*flags |= DSCAPS_PRIMARYSTEREO;
if (*formats & (WAVE_FORMAT_1M08 | WAVE_FORMAT_2M08 |
WAVE_FORMAT_4M08 | WAVE_FORMAT_48M08 |
WAVE_FORMAT_96M08 | WAVE_FORMAT_1S08 |
WAVE_FORMAT_2S08 | WAVE_FORMAT_4S08 |
WAVE_FORMAT_48S08 | WAVE_FORMAT_96S08) )
*flags |= DSCAPS_PRIMARY8BIT;
if (*formats & (WAVE_FORMAT_1M16 | WAVE_FORMAT_2M16 |
WAVE_FORMAT_4M16 | WAVE_FORMAT_48M16 |
WAVE_FORMAT_96M16 | WAVE_FORMAT_1S16 |
WAVE_FORMAT_2S16 | WAVE_FORMAT_4S16 |
WAVE_FORMAT_48S16 | WAVE_FORMAT_96S16) )
*flags |= DSCAPS_PRIMARY16BIT;
rc = 0;
done:
if (rc < 0) ERR("failed: %s(%d)\n", snd_strerror(rc), rc);
HeapFree( GetProcessHeap(), 0, hw_params );
HeapFree( GetProcessHeap(), 0, fmask );
HeapFree( GetProcessHeap(), 0, acmask );
return rc;
}
