static GstCaps *
gst_alsa_detect_formats (GstObject * obj, snd_pcm_hw_params_t * hw_params,
GstCaps * in_caps)
{
snd_pcm_format_mask_t *mask;
GstStructure *s;
GstCaps *caps;
gint i;
snd_pcm_format_mask_malloc (&mask);
snd_pcm_hw_params_get_format_mask (hw_params, mask);
caps = gst_caps_new_empty ();
for (i = 0; i < gst_caps_get_size (in_caps); ++i) {
GstStructure *scopy;
gint w, width = 0, depth = 0;
s = gst_caps_get_structure (in_caps, i);
if (!gst_structure_has_name (s, "audio/x-raw-int")) {
GST_DEBUG_OBJECT (obj, "skipping non-int format");
continue;
}
if (!gst_structure_get_int (s, "width", &width) ||
!gst_structure_get_int (s, "depth", &depth))
continue;
if (width == 0 || (width % 8) != 0)
continue; /* Only full byte widths are valid */
for (w = 0; w < G_N_ELEMENTS (pcmformats); w++)
if (pcmformats[w].width == width && pcmformats[w].depth == depth)
break;
if (w == G_N_ELEMENTS (pcmformats))
continue; /* Unknown format */
if (snd_pcm_format_mask_test (mask, pcmformats[w].sformat) &&
snd_pcm_format_mask_test (mask, pcmformats[w].uformat)) {
/* template contains { true, false } or just one, leave it as it is */
scopy = gst_structure_copy (s);
} else if (snd_pcm_format_mask_test (mask, pcmformats[w].sformat)) {
scopy = gst_structure_copy (s);
gst_structure_set (scopy, "signed", G_TYPE_BOOLEAN, TRUE, NULL);
} else if (snd_pcm_format_mask_test (mask, pcmformats[w].uformat)) {
scopy = gst_structure_copy (s);
gst_structure_set (scopy, "signed", G_TYPE_BOOLEAN, FALSE, NULL);
} else {
scopy = NULL;
}
if (scopy) {
if (width > 8) {
/* TODO: proper endianness detection, for now it's CPU endianness only */
gst_structure_set (scopy, "endianness", G_TYPE_INT, G_BYTE_ORDER, NULL);
}
gst_caps_append_structure (caps, scopy);
}
}
snd_pcm_format_mask_free (mask);
gst_caps_unref (in_caps);
return caps;
}
static int setup(sox_format_t * ft)
{
priv_t * p = (priv_t *)ft->priv;
snd_pcm_hw_params_t * params = NULL;
snd_pcm_format_mask_t * mask = NULL;
snd_pcm_uframes_t min, max;
unsigned n;
int err;
_(snd_pcm_open, (&p->pcm, ft->filename, ft->mode == 'r'? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, 0));
_(snd_pcm_hw_params_malloc, (¶ms));
_(snd_pcm_hw_params_any, (p->pcm, params));
#if SND_LIB_VERSION >= 0x010009 /* Disable alsa-lib resampling: */
_(snd_pcm_hw_params_set_rate_resample, (p->pcm, params, 0));
#endif
_(snd_pcm_hw_params_set_access, (p->pcm, params, SND_PCM_ACCESS_RW_INTERLEAVED));
_(snd_pcm_format_mask_malloc, (&mask)); /* Set format: */
snd_pcm_hw_params_get_format_mask(params, mask);
_(select_format, (&ft->encoding.encoding, &ft->encoding.bits_per_sample, mask, &p->format));
_(snd_pcm_hw_params_set_format, (p->pcm, params, p->format));
snd_pcm_format_mask_free(mask), mask = NULL;
n = ft->signal.rate; /* Set rate: */
_(snd_pcm_hw_params_set_rate_near, (p->pcm, params, &n, 0));
ft->signal.rate = n;
n = ft->signal.channels; /* Set channels: */
_(snd_pcm_hw_params_set_channels_near, (p->pcm, params, &n));
ft->signal.channels = n;
/* Set buf_len > > sox_globals.bufsiz for no underrun: */
p->buf_len = sox_globals.bufsiz * 8 / NBYTES / ft->signal.channels;
_(snd_pcm_hw_params_get_buffer_size_min, (params, &min));
_(snd_pcm_hw_params_get_buffer_size_max, (params, &max));
p->period = range_limit(p->buf_len, min, max) / 8;
p->buf_len = p->period * 8;
_(snd_pcm_hw_params_set_period_size_near, (p->pcm, params, &p->period, 0));
_(snd_pcm_hw_params_set_buffer_size_near, (p->pcm, params, &p->buf_len));
if (p->period * 2 > p->buf_len) {
lsx_fail_errno(ft, SOX_EPERM, "buffer too small");
goto error;
}
_(snd_pcm_hw_params, (p->pcm, params)); /* Configure ALSA */
snd_pcm_hw_params_free(params), params = NULL;
_(snd_pcm_prepare, (p->pcm));
p->buf_len *= ft->signal.channels; /* No longer in `frames' */
p->buf = lsx_malloc(p->buf_len * NBYTES);
return SOX_SUCCESS;
error:
if (mask) snd_pcm_format_mask_free(mask);
if (params) snd_pcm_hw_params_free(params);
return SOX_EOF;
}
static void
as_setup_format_combo(GawSndData *snd)
{
GtkWidget *combo = snd->w_format;
snd_pcm_format_t format = snd->sparams->format;
snd_pcm_t *pcm;
snd_pcm_hw_params_t *hwparams;
snd_pcm_format_mask_t *formatMask;
AsFormatList *p;
int i ;
int err;
for ( i = snd->n_format ; i > 0; i-- ){
gtk_combo_box_text_remove (GTK_COMBO_BOX_TEXT (combo), i - 1 );
}
snd->n_format = 0;
snd_pcm_hw_params_alloca(&hwparams);
snd_pcm_format_mask_alloca(&formatMask);
err = snd_pcm_open(&pcm, snd->sparams->device_name, SND_PCM_STREAM_CAPTURE, SND_PCM_NONBLOCK);
if ( err < 0 ) {
return;
}
err = snd_pcm_hw_params_any(pcm, hwparams);
if ( err < 0 ) {
snd_pcm_close(pcm);
return;
}
snd_pcm_hw_params_get_format_mask(hwparams, formatMask);
for( p = as_format_list, i = 0 ; p->name ; p++, i++ ){
if ( snd_pcm_format_mask_test ( formatMask, p->format ) < 0 ){
continue;
}
gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (combo), p->name );
// msg_dbg("as_format %d '%s'", snd->n_format, p->name );
snd->n_format++;
if ( p->format == format ) {
gtk_combo_box_set_active (GTK_COMBO_BOX (combo), i);
}
}
snd_pcm_close(pcm);
}
void DAUDIO_GetFormats(INT32 mixerIndex, INT32 deviceID, int isSource, void* creator) {
snd_pcm_t* handle;
snd_pcm_format_mask_t* formatMask;
snd_pcm_format_t format;
snd_pcm_hw_params_t* hwParams;
int handledBits[MAX_BIT_INDEX+1];
int ret;
int sampleSizeInBytes, significantBits, isSigned, isBigEndian, enc;
int origSampleSizeInBytes, origSignificantBits;
int channels, minChannels, maxChannels;
int rate, bitIndex;
for (bitIndex = 0; bitIndex <= MAX_BIT_INDEX; bitIndex++) handledBits[bitIndex] = FALSE;
if (openPCMfromDeviceID(deviceID, &handle, isSource, TRUE /*query hardware*/) < 0) {
return;
}
ret = snd_pcm_format_mask_malloc(&formatMask);
if (ret != 0) {
ERROR1("snd_pcm_format_mask_malloc returned error %d\n", ret);
} else {
ret = snd_pcm_hw_params_malloc(&hwParams);
if (ret != 0) {
ERROR1("snd_pcm_hw_params_malloc returned error %d\n", ret);
} else {
ret = snd_pcm_hw_params_any(handle, hwParams);
if (ret != 0) {
ERROR1("snd_pcm_hw_params_any returned error %d\n", ret);
}
}
snd_pcm_hw_params_get_format_mask(hwParams, formatMask);
#ifdef ALSA_PCM_NEW_HW_PARAMS_API
if (ret == 0) {
ret = snd_pcm_hw_params_get_channels_min(hwParams, &minChannels);
if (ret != 0) {
ERROR1("snd_pcm_hw_params_get_channels_min returned error %d\n", ret);
}
}
if (ret == 0) {
ret = snd_pcm_hw_params_get_channels_max(hwParams, &maxChannels);
if (ret != 0) {
ERROR1("snd_pcm_hw_params_get_channels_max returned error %d\n", ret);
}
}
#else
minChannels = snd_pcm_hw_params_get_channels_min(hwParams);
maxChannels = snd_pcm_hw_params_get_channels_max(hwParams);
if (minChannels > maxChannels) {
ERROR2("MinChannels=%d, maxChannels=%d\n", minChannels, maxChannels);
}
#endif
// since we queried the hw: device, for many soundcards, it will only
// report the maximum number of channels (which is the only way to talk
// to the hw: device). Since we will, however, open the plughw: device
// when opening the Source/TargetDataLine, we can safely assume that
// also the channels 1..maxChannels are available.
#ifdef ALSA_PCM_USE_PLUGHW
minChannels = 1;
#endif
if (ret == 0) {
// plughw: supports any sample rate
rate = -1;
for (format = 0; format <= SND_PCM_FORMAT_LAST; format++) {
if (snd_pcm_format_mask_test(formatMask, format)) {
// format exists
if (getFormatFromAlsaFormat(format, &origSampleSizeInBytes,
&origSignificantBits,
&isSigned, &isBigEndian, &enc)) {
// now if we use plughw:, we can use any bit size below the
// natively supported ones. Some ALSA drivers only support the maximum
// bit size, so we add any sample rates below the reported one.
// E.g. this iteration reports support for 16-bit.
// getBitIndex will return 2, so it will add entries for
// 16-bit (bitIndex=2) and in the next do-while loop iteration,
// it will decrease bitIndex and will therefore add 8-bit support.
bitIndex = getBitIndex(origSampleSizeInBytes, origSignificantBits);
do {
if (bitIndex == 0
|| bitIndex == MAX_BIT_INDEX
|| !handledBits[bitIndex]) {
handledBits[bitIndex] = TRUE;
sampleSizeInBytes = getSampleSizeInBytes(bitIndex, origSampleSizeInBytes);
significantBits = getSignificantBits(bitIndex, origSignificantBits);
if (maxChannels - minChannels > MAXIMUM_LISTED_CHANNELS) {
// avoid too many channels explicitly listed
// just add -1, min, and max
DAUDIO_AddAudioFormat(creator, significantBits,
-1, -1, rate,
enc, isSigned, isBigEndian);
DAUDIO_AddAudioFormat(creator, significantBits,
sampleSizeInBytes * minChannels,
minChannels, rate,
enc, isSigned, isBigEndian);
DAUDIO_AddAudioFormat(creator, significantBits,
sampleSizeInBytes * maxChannels,
maxChannels, rate,
enc, isSigned, isBigEndian);
} else {
for (channels = minChannels; channels <= maxChannels; channels++) {
DAUDIO_AddAudioFormat(creator, significantBits,
(channels < 0)?-1:(sampleSizeInBytes * channels),
channels, rate,
enc, isSigned, isBigEndian);
}
}
}
#ifndef ALSA_PCM_USE_PLUGHW
// without plugin, do not add fake formats
break;
#endif
} while (--bitIndex > 0);
} else {
TRACE1("could not get format from alsa for format %d\n", format);
}
} else {
//TRACE1("Format %d not supported\n", format);
}
} // for loop
snd_pcm_hw_params_free(hwParams);
}
snd_pcm_format_mask_free(formatMask);
}
snd_pcm_close(handle);
}
/* Fill caps with the device capabilities. Return 0 on error. */
static int fill_capabilities (struct output_driver_caps *caps)
{
snd_pcm_hw_params_t *hw_params;
snd_pcm_format_mask_t *format_mask;
int err;
unsigned val;
if ((err = snd_pcm_open(&handle, options_get_str("AlsaDevice"),
SND_PCM_STREAM_PLAYBACK,
SND_PCM_NONBLOCK)) < 0) {
error ("Can't open audio: %s", snd_strerror(err));
return 0;
}
if ((err = snd_pcm_hw_params_malloc(&hw_params)) < 0) {
error ("Can't allocate alsa hardware parameters structure: %s",
snd_strerror(err));
snd_pcm_close (handle);
return 0;
}
if ((err = snd_pcm_hw_params_any (handle, hw_params)) < 0) {
error ("Can't initialize hardware parameters structure: %s",
snd_strerror(err));
snd_pcm_hw_params_free (hw_params);
snd_pcm_close (handle);
return 0;
}
if ((err = snd_pcm_hw_params_get_channels_min (hw_params, &val)) < 0) {
error ("Can't get the minimum number of channels: %s",
snd_strerror(err));
snd_pcm_hw_params_free (hw_params);
snd_pcm_close (handle);
return 0;
}
caps->min_channels = val;
if ((err = snd_pcm_hw_params_get_channels_max (hw_params, &val)) < 0) {
error ("Can't get the maximum number of channels: %s",
snd_strerror(err));
snd_pcm_hw_params_free (hw_params);
snd_pcm_close (handle);
return 0;
}
caps->max_channels = val;
if ((err = snd_pcm_format_mask_malloc(&format_mask)) < 0) {
error ("Can't allocate format mask: %s", snd_strerror(err));
snd_pcm_hw_params_free (hw_params);
snd_pcm_close (handle);
return 0;
}
snd_pcm_hw_params_get_format_mask (hw_params, format_mask);
caps->formats = SFMT_NE;
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_S8))
caps->formats |= SFMT_S8;
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_U8))
caps->formats |= SFMT_U8;
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_S16))
caps->formats |= SFMT_S16;
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_U16))
caps->formats |= SFMT_U16;
#if 0
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_S24))
caps->formats |= SFMT_S32; /* conversion needed */
#endif
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_S32))
caps->formats |= SFMT_S32;
if (snd_pcm_format_mask_test(format_mask, SND_PCM_FORMAT_U32))
caps->formats |= SFMT_U32;
snd_pcm_format_mask_free (format_mask);
snd_pcm_hw_params_free (hw_params);
snd_pcm_close (handle);
handle = NULL;
return 1;
}
/**************************************************************************
* ALSA_TraceParameters [internal]
*
* used to trace format changes, hw and sw parameters
*/
void ALSA_TraceParameters(snd_pcm_hw_params_t * hw_params, snd_pcm_sw_params_t * sw, int full)
{
int err;
snd_pcm_format_t format;
snd_pcm_access_t access;
#define X(x) ((x)? "true" : "false")
if (full)
TRACE("FLAGS: sampleres=%s overrng=%s pause=%s resume=%s syncstart=%s batch=%s block=%s double=%s "
"halfd=%s joint=%s\n",
X(snd_pcm_hw_params_can_mmap_sample_resolution(hw_params)),
X(snd_pcm_hw_params_can_overrange(hw_params)),
X(snd_pcm_hw_params_can_pause(hw_params)),
X(snd_pcm_hw_params_can_resume(hw_params)),
X(snd_pcm_hw_params_can_sync_start(hw_params)),
X(snd_pcm_hw_params_is_batch(hw_params)),
X(snd_pcm_hw_params_is_block_transfer(hw_params)),
X(snd_pcm_hw_params_is_double(hw_params)),
X(snd_pcm_hw_params_is_half_duplex(hw_params)),
X(snd_pcm_hw_params_is_joint_duplex(hw_params)));
#undef X
err = snd_pcm_hw_params_get_access(hw_params, &access);
if (err >= 0)
{
TRACE("access=%s\n", snd_pcm_access_name(access));
}
else
{
snd_pcm_access_mask_t * acmask;
acmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_access_mask_sizeof());
snd_pcm_hw_params_get_access_mask(hw_params, acmask);
for ( access = SND_PCM_ACCESS_MMAP_INTERLEAVED; access <= SND_PCM_ACCESS_LAST; access++)
if (snd_pcm_access_mask_test(acmask, access))
TRACE("access=%s\n", snd_pcm_access_name(access));
HeapFree( GetProcessHeap(), 0, acmask );
}
err = snd_pcm_hw_params_get_format(hw_params, &format);
if (err >= 0)
{
TRACE("format=%s\n", snd_pcm_format_name(format));
}
else
{
snd_pcm_format_mask_t * fmask;
fmask = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof());
snd_pcm_hw_params_get_format_mask(hw_params, fmask);
for ( format = SND_PCM_FORMAT_S8; format <= SND_PCM_FORMAT_LAST ; format++)
if ( snd_pcm_format_mask_test(fmask, format) )
TRACE("format=%s\n", snd_pcm_format_name(format));
HeapFree( GetProcessHeap(), 0, fmask );
}
do {
int err=0;
unsigned int val=0;
err = snd_pcm_hw_params_get_channels(hw_params, &val);
if (err<0) {
unsigned int min = 0;
unsigned int max = 0;
err = snd_pcm_hw_params_get_channels_min(hw_params, &min),
err = snd_pcm_hw_params_get_channels_max(hw_params, &max);
TRACE("channels_min=%u, channels_min_max=%u\n", min, max);
} else {
TRACE("channels=%d\n", val);
}
} while(0);
do {
int err=0;
snd_pcm_uframes_t val=0;
err = snd_pcm_hw_params_get_buffer_size(hw_params, &val);
if (err<0) {
snd_pcm_uframes_t min = 0;
snd_pcm_uframes_t max = 0;
err = snd_pcm_hw_params_get_buffer_size_min(hw_params, &min),
err = snd_pcm_hw_params_get_buffer_size_max(hw_params, &max);
TRACE("buffer_size_min=%lu, buffer_size_min_max=%lu\n", min, max);
} else {
TRACE("buffer_size=%lu\n", val);
}
} while(0);
#define X(x) do { \
int err=0; \
int dir=0; \
unsigned int val=0; \
err = snd_pcm_hw_params_get_##x(hw_params,&val, &dir); \
if (err<0) { \
unsigned int min = 0; \
unsigned int max = 0; \
err = snd_pcm_hw_params_get_##x##_min(hw_params, &min, &dir); \
err = snd_pcm_hw_params_get_##x##_max(hw_params, &max, &dir); \
TRACE(#x "_min=%u " #x "_max=%u\n", min, max); \
} else \
TRACE(#x "=%d\n", val); \
} while(0)
X(rate);
X(buffer_time);
X(periods);
do {
int err=0;
int dir=0;
snd_pcm_uframes_t val=0;
err = snd_pcm_hw_params_get_period_size(hw_params, &val, &dir);
if (err<0) {
snd_pcm_uframes_t min = 0;
snd_pcm_uframes_t max = 0;
err = snd_pcm_hw_params_get_period_size_min(hw_params, &min, &dir),
err = snd_pcm_hw_params_get_period_size_max(hw_params, &max, &dir);
TRACE("period_size_min=%lu, period_size_min_max=%lu\n", min, max);
} else {
TRACE("period_size=%lu\n", val);
}
} while(0);
X(period_time);
#undef X
if (!sw)
return;
}
int VPOutPluginAlsa::init(VPlayer *v, VPBuffer *in)
{
DBG("Alsa:init");
owner = v;
bin = in;
if (snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, SND_PCM_NO_AUTO_RESAMPLE) < 0){
DBG("Alsa:init: failed to open pcm");
exit(0);
return -1;
}
snd_pcm_sw_params_t *swparams;
snd_pcm_sw_params_malloc(&swparams);
snd_pcm_sw_params_current (handle, swparams);
snd_pcm_sw_params_set_start_threshold (handle, swparams, VPBUFFER_FRAMES - PERIOD_SIZE);
snd_pcm_sw_params (handle, swparams);
snd_pcm_sw_params_free(swparams);
snd_pcm_hw_params_alloca(¶ms);
snd_pcm_hw_params_any(handle, params);
snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
snd_pcm_format_mask_t *mask;
snd_pcm_format_mask_alloca(&mask);
snd_pcm_hw_params_get_format_mask(params, mask);
if (snd_pcm_format_mask_test(mask, SND_PCM_FORMAT_S32))
{
DBG("bit depth is 32");
snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S32);
multiplier = (1<<31) -1 ;
DBG(multiplier);
}
else if (snd_pcm_format_mask_test(mask, SND_PCM_FORMAT_S24))
{
DBG("bit depth is 24");
snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S24);
multiplier = (1<<23) -1;
}
else if (snd_pcm_format_mask_test(mask, SND_PCM_FORMAT_S16))
{
DBG("bit depth is 16");
snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16);
multiplier = (1<<15) -1;
}
else if (snd_pcm_format_mask_test(mask, SND_PCM_FORMAT_S8))
{
DBG("bit depth is 8");
snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S8);
multiplier = (1<<7) -1;;
}
snd_pcm_hw_params_set_channels(handle, params, bin->chans);
snd_pcm_hw_params_set_period_size(handle, params, PERIOD_SIZE, 0);
if (snd_pcm_hw_params(handle, params) < 0) {
DBG("Alsa:init: failed to set pcm params");
return -1;
}
snd_pcm_hw_params_current(handle, params);
int dir;
snd_pcm_hw_params_get_rate(params, &out_srate, &dir);
in_srate = bin->srate;
int rerr;
rs = src_new(SRC_SINC_FASTEST, bin->chans, &rerr);
if (!rs){
DBG("SRC error"<<rerr);
return -1;
}
rd.src_ratio = (out_srate*1.0)/(in_srate*1.0);
out_frames = (VPBUFFER_FRAMES*rd.src_ratio)*2;
out_buf = (float *)ALIGNED_ALLOC(sizeof(float)*out_frames*bin->chans);
out_buf_i = (int *)ALIGNED_ALLOC(sizeof(int)*out_frames*bin->chans);
DBG("target rate "<<out_srate);
work = true;
paused = false;
pause_check = false;
FULL_MEMORY_BARRIER;
in_fd = inotify_init();
if ( in_fd < 0 ) {
DBG("error initializing inotify, auto pause won't work");
} else {
in_wd[0]=inotify_add_watch( in_fd, "/dev/snd/pcmC0D0p", IN_OPEN | IN_CLOSE );
}
fcntl(in_fd, F_SETFL, O_NONBLOCK);
worker = new std::thread((void(*)(void*))worker_run, this);
worker->high_priority();
DBG("alsa thread made");
DBG((void *)VPOutPluginAlsa::check_contention);
VPEvents::getSingleton()->schedulerAddJob((VPEvents::VPJob) VPOutPluginAlsa::check_contention, this,0);
return 0;
}
/*----------------------------------------------------------------------------
** 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;
}
