Add new config parameter 'device' to audio_output type "osx":
- if not supplied or set to "default", open default device
- if set to "system", open system device
- otherwise 'device' should be an audio device name: mpd will find and
open the specified audio device, falling back to the default
device if it's not found
---
configure.ac | 2 +-
src/output/osx_plugin.c | 120 ++++++++++++++++++++++++++++++++++++++++++++++-
2 files changed, 120 insertions(+), 2 deletions(-)
diff --git a/configure.ac b/configure.ac
index ab1410d..d8b2c58 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1319,7 +1319,7 @@ enable_osx=no
case "$host_os" in
darwin*)
AC_DEFINE(HAVE_OSX, 1, [Define for compiling OS X support])
- MPD_LIBS="$MPD_LIBS -framework AudioUnit -framework
CoreServices"
+ MPD_LIBS="$MPD_LIBS -framework AudioUnit -framework CoreAudio
-framework CoreServices"
enable_osx=yes ;;
esac
diff --git a/src/output/osx_plugin.c b/src/output/osx_plugin.c
index 17d138d..be04e8b 100644
--- a/src/output/osx_plugin.c
+++ b/src/output/osx_plugin.c
@@ -28,6 +28,11 @@
#define G_LOG_DOMAIN "osx"
struct osx_output {
+ /* configuration settings */
+ OSType component_subtype;
+ /* only applicable with kAudioUnitSubType_HALOutput */
+ const char *device_name;
+
AudioUnit au;
GMutex *mutex;
GCond *condition;
@@ -54,6 +59,26 @@ osx_output_test_default_device(void)
return true;
}
+static void
+osx_output_configure(struct osx_output *oo, const struct config_param *param)
+{
+ const char *device = config_get_block_string(param, "device", NULL);
+
+ if (device == NULL || 0 == strcmp(device, "default")) {
+ oo->component_subtype = kAudioUnitSubType_DefaultOutput;
+ oo->device_name = NULL;
+ }
+ else if (0 == strcmp(device, "system")) {
+ oo->component_subtype = kAudioUnitSubType_SystemOutput;
+ oo->device_name = NULL;
+ }
+ else {
+ oo->component_subtype = kAudioUnitSubType_HALOutput;
+ /* XXX am I supposed to g_strdup() this? */
+ oo->device_name = device;
+ }
+}
+
static void *
osx_output_init(G_GNUC_UNUSED const struct audio_format *audio_format,
G_GNUC_UNUSED const struct config_param *param,
@@ -61,6 +86,7 @@ osx_output_init(G_GNUC_UNUSED const struct audio_format
*audio_format,
{
struct osx_output *oo = g_new(struct osx_output, 1);
+ osx_output_configure(oo, param);
oo->mutex = g_mutex_new();
oo->condition = g_cond_new();
@@ -156,6 +182,95 @@ osx_render(void *vdata,
}
static bool
+osx_output_set_device(struct osx_output *oo, GError **error)
+{
+ bool ret = true;
+ OSStatus status;
+ UInt32 size, numdevices;
+ AudioDeviceID *deviceids = NULL;
+ char name[256];
+ unsigned int i;
+
+ if (oo->component_subtype != kAudioUnitSubType_HALOutput)
+ goto done;
+
+ /* how many audio devices are there? */
+ status = AudioHardwareGetPropertyInfo(kAudioHardwarePropertyDevices,
+ &size,
+ NULL);
+ if (status != noErr) {
+ g_set_error(error, osx_output_quark(), 0,
+ "Unable to determine number of OS X audio devices:
%s",
+ GetMacOSStatusCommentString(status));
+ ret = false;
+ goto done;
+ }
+
+ /* what are the available audio device IDs? */
+ numdevices = size / sizeof(AudioDeviceID);
+ deviceids = g_malloc(size);
+ status = AudioHardwareGetProperty(kAudioHardwarePropertyDevices,
+ &size,
+ deviceids);
+ if (status != noErr) {
+ g_set_error(error, osx_output_quark(), 0,
+ "Unable to determine OS X audio device IDs: %s",
+ GetMacOSStatusCommentString(status));
+ ret = false;
+ goto done;
+ }
+
+ /* which audio device matches oo->device_name? */
+ for (i = 0; i < numdevices; i++) {
+ size = sizeof(name);
+ status = AudioDeviceGetProperty(deviceids[i], 0, false,
+ kAudioDevicePropertyDeviceName,
+ &size, name);
+ if (status != noErr) {
+ g_set_error(error, osx_output_quark(), 0,
+ "Unable to determine OS X device name "
+ "(device %u): %s",
+ (unsigned int) deviceids[i],
+ GetMacOSStatusCommentString(status));
+ ret = false;
+ goto done;
+ }
+ if (strcmp(oo->device_name, name) == 0) {
+ g_debug("found matching device: ID=%u, name=%s",
+ (unsigned int) deviceids[i], name);
+ break;
+ }
+ }
+ if (i == numdevices) {
+ g_warning("Found no audio device with name '%s' "
+ "(will use default audio device)",
+ oo->device_name);
+ goto done;
+ }
+
+ status = AudioUnitSetProperty(oo->au,
+ kAudioOutputUnitProperty_CurrentDevice,
+ kAudioUnitScope_Global,
+ 0,
+ &(deviceids[i]),
+ sizeof(AudioDeviceID));
+ if (status != noErr) {
+ g_set_error(error, osx_output_quark(), 0,
+ "Unable to set OS X audio output device: %s",
+ GetMacOSStatusCommentString(status));
+ ret = false;
+ goto done;
+ }
+ g_debug("set OS X audio output device ID=%u, name=%s",
+ (unsigned int) deviceids[i], name);
+
+done:
+ if (deviceids != NULL)
+ g_free(deviceids);
+ return ret;
+}
+
+static bool
osx_output_open(void *data, struct audio_format *audio_format, GError **error)
{
struct osx_output *od = data;
@@ -167,7 +282,7 @@ osx_output_open(void *data, struct audio_format
*audio_format, GError **error)
ComponentResult result;
desc.componentType = kAudioUnitType_Output;
- desc.componentSubType = kAudioUnitSubType_DefaultOutput;
+ desc.componentSubType = od->component_subtype;
desc.componentManufacturer = kAudioUnitManufacturer_Apple;
desc.componentFlags = 0;
desc.componentFlagsMask = 0;
@@ -196,6 +311,9 @@ osx_output_open(void *data, struct audio_format
*audio_format, GError **error)
return false;
}
+ if (!osx_output_set_device(od, error))
+ return false;
+
callback.inputProc = osx_render;
callback.inputProcRefCon = od;
--
1.7.1
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