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Add "None" devices to PortaudioBackend

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This allows for disabling either input or output, but not both
This commit is contained in:
Tim Mayberry 2015-08-22 21:04:53 +10:00
parent 440e6cd591
commit 08d6dd153e
2 changed files with 29 additions and 5 deletions
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33
libs/backends/portaudio/portaudio_io.cc
View File

@ -22,6 +22,7 @@
#include <string.h>
#include <assert.h>
#include <glibmm.h>
#include "portaudio_io.h"
#ifdef WITH_ASIO
@ -424,6 +425,15 @@ PortAudioIO::clear_device_lists ()
_output_devices.clear();
}
void
PortAudioIO::add_none_devices ()
{
_input_devices.insert(std::pair<int, paDevice*>(
DeviceNone, new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceNone), 0, 0)));
_output_devices.insert(std::pair<int, paDevice*>(
DeviceNone, new paDevice(AudioBackend::get_standard_device_name(AudioBackend::DeviceNone), 0, 0)));
}
void
PortAudioIO::add_default_devices ()
{
@ -503,6 +513,7 @@ PortAudioIO::discover()
if (!initialize_pa()) return;
clear_device_lists ();
add_none_devices ();
add_devices ();
}
@ -558,9 +569,9 @@ PortAudioIO::pcm_setup (
_state = -2;
PaError err = paNoError;
const PaDeviceInfo *nfo_in;
const PaDeviceInfo *nfo_out;
const PaStreamInfo *nfo_s;
const PaDeviceInfo *nfo_in = NULL;
const PaDeviceInfo *nfo_out = NULL;
const PaStreamInfo *nfo_s = NULL;
if (!initialize_pa()) {
DEBUG_AUDIO ("PortAudio Initialization Failed\n");
@ -583,8 +594,20 @@ PortAudioIO::pcm_setup (
DEBUG_AUDIO (string_compose (
"PortAudio Device IDs: i:%1 o:%2\n", device_input, device_output));
nfo_in = Pa_GetDeviceInfo(device_input);
nfo_out = Pa_GetDeviceInfo(device_output);
if (device_input == DeviceNone && device_output == DeviceNone) {
// just send the error msg for now rather than return it
error << AudioBackend::get_error_string(AudioBackend::DeviceConfigurationNotSupportedError)
<< endmsg;
return -1;
}
if (device_input != DeviceNone) {
nfo_in = Pa_GetDeviceInfo(device_input);
}
if (device_output != DeviceNone) {
nfo_out = Pa_GetDeviceInfo(device_output);
}
if (!nfo_in && ! nfo_out) {
DEBUG_AUDIO ("PortAudio Cannot Query Device Info\n");

1
libs/backends/portaudio/portaudio_io.h
View File

@ -101,6 +101,7 @@ public:
private: // Methods
void clear_device_lists ();
void add_none_devices ();
void add_default_devices ();
void add_devices ();
std::string get_host_api_name_from_index (PaHostApiIndex index);