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Added a couple of useful constructors to some stream classes. Replaced some old static functions with anonymous namespaces.

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This commit is contained in:
Julian Storer 2010-10-26 16:46:19 +01:00
parent 1577be257c
commit 377b9ff2c4
65 changed files with 1844 additions and 1632 deletions
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133
src/native/linux/juce_linux_Audio.cpp
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@ -29,85 +29,88 @@
//==============================================================================
static void getDeviceSampleRates (snd_pcm_t* handle, Array <int>& rates)
namespace
{
const int ratesToTry[] = { 22050, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 0 };
snd_pcm_hw_params_t* hwParams;
snd_pcm_hw_params_alloca (&hwParams);
for (int i = 0; ratesToTry[i] != 0; ++i)
void getDeviceSampleRates (snd_pcm_t* handle, Array <int>& rates)
{
if (snd_pcm_hw_params_any (handle, hwParams) >= 0
&& snd_pcm_hw_params_test_rate (handle, hwParams, ratesToTry[i], 0) == 0)
const int ratesToTry[] = { 22050, 32000, 44100, 48000, 88200, 96000, 176400, 192000, 0 };
snd_pcm_hw_params_t* hwParams;
snd_pcm_hw_params_alloca (&hwParams);
for (int i = 0; ratesToTry[i] != 0; ++i)
{
rates.addIfNotAlreadyThere (ratesToTry[i]);
}
}
}
static void getDeviceNumChannels (snd_pcm_t* handle, unsigned int* minChans, unsigned int* maxChans)
{
snd_pcm_hw_params_t *params;
snd_pcm_hw_params_alloca (&params);
if (snd_pcm_hw_params_any (handle, params) >= 0)
{
snd_pcm_hw_params_get_channels_min (params, minChans);
snd_pcm_hw_params_get_channels_max (params, maxChans);
}
}
static void getDeviceProperties (const String& deviceID,
unsigned int& minChansOut,
unsigned int& maxChansOut,
unsigned int& minChansIn,
unsigned int& maxChansIn,
Array <int>& rates)
{
if (deviceID.isEmpty())
return;
snd_ctl_t* handle;
if (snd_ctl_open (&handle, deviceID.upToLastOccurrenceOf (",", false, false).toUTF8(), SND_CTL_NONBLOCK) >= 0)
{
snd_pcm_info_t* info;
snd_pcm_info_alloca (&info);
snd_pcm_info_set_stream (info, SND_PCM_STREAM_PLAYBACK);
snd_pcm_info_set_device (info, deviceID.fromLastOccurrenceOf (",", false, false).getIntValue());
snd_pcm_info_set_subdevice (info, 0);
if (snd_ctl_pcm_info (handle, info) >= 0)
{
snd_pcm_t* pcmHandle;
if (snd_pcm_open (&pcmHandle, deviceID.toUTF8(), SND_PCM_STREAM_PLAYBACK, SND_PCM_ASYNC | SND_PCM_NONBLOCK) >= 0)
if (snd_pcm_hw_params_any (handle, hwParams) >= 0
&& snd_pcm_hw_params_test_rate (handle, hwParams, ratesToTry[i], 0) == 0)
{
getDeviceNumChannels (pcmHandle, &minChansOut, &maxChansOut);
getDeviceSampleRates (pcmHandle, rates);
snd_pcm_close (pcmHandle);
rates.addIfNotAlreadyThere (ratesToTry[i]);
}
}
}
snd_pcm_info_set_stream (info, SND_PCM_STREAM_CAPTURE);
void getDeviceNumChannels (snd_pcm_t* handle, unsigned int* minChans, unsigned int* maxChans)
{
snd_pcm_hw_params_t *params;
snd_pcm_hw_params_alloca (&params);
if (snd_ctl_pcm_info (handle, info) >= 0)
if (snd_pcm_hw_params_any (handle, params) >= 0)
{
snd_pcm_t* pcmHandle;
if (snd_pcm_open (&pcmHandle, deviceID.toUTF8(), SND_PCM_STREAM_CAPTURE, SND_PCM_ASYNC | SND_PCM_NONBLOCK) >= 0)
{
getDeviceNumChannels (pcmHandle, &minChansIn, &maxChansIn);
snd_pcm_hw_params_get_channels_min (params, minChans);
snd_pcm_hw_params_get_channels_max (params, maxChans);
}
}
if (rates.size() == 0)
void getDeviceProperties (const String& deviceID,
unsigned int& minChansOut,
unsigned int& maxChansOut,
unsigned int& minChansIn,
unsigned int& maxChansIn,
Array <int>& rates)
{
if (deviceID.isEmpty())
return;
snd_ctl_t* handle;
if (snd_ctl_open (&handle, deviceID.upToLastOccurrenceOf (",", false, false).toUTF8(), SND_CTL_NONBLOCK) >= 0)
{
snd_pcm_info_t* info;
snd_pcm_info_alloca (&info);
snd_pcm_info_set_stream (info, SND_PCM_STREAM_PLAYBACK);
snd_pcm_info_set_device (info, deviceID.fromLastOccurrenceOf (",", false, false).getIntValue());
snd_pcm_info_set_subdevice (info, 0);
if (snd_ctl_pcm_info (handle, info) >= 0)
{
snd_pcm_t* pcmHandle;
if (snd_pcm_open (&pcmHandle, deviceID.toUTF8(), SND_PCM_STREAM_PLAYBACK, SND_PCM_ASYNC | SND_PCM_NONBLOCK) >= 0)
{
getDeviceNumChannels (pcmHandle, &minChansOut, &maxChansOut);
getDeviceSampleRates (pcmHandle, rates);
snd_pcm_close (pcmHandle);
snd_pcm_close (pcmHandle);
}
}
}
snd_ctl_close (handle);
snd_pcm_info_set_stream (info, SND_PCM_STREAM_CAPTURE);
if (snd_ctl_pcm_info (handle, info) >= 0)
{
snd_pcm_t* pcmHandle;
if (snd_pcm_open (&pcmHandle, deviceID.toUTF8(), SND_PCM_STREAM_CAPTURE, SND_PCM_ASYNC | SND_PCM_NONBLOCK) >= 0)
{
getDeviceNumChannels (pcmHandle, &minChansIn, &maxChansIn);
if (rates.size() == 0)
getDeviceSampleRates (pcmHandle, rates);
snd_pcm_close (pcmHandle);
}
}
snd_ctl_close (handle);
}
}
}