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CoreAudio: Separate enumeration code

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The enumeration code being up at the top was making things quite messy,
so I split that code out to a separate set of files.
This commit is contained in:
jp9000
2014-03-04 07:10:33 -07:00
parent 348588254c
commit bec8a09bd9
5 changed files with 148 additions and 130 deletions
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130
plugins/mac-capture/mac-audio.c
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@@ -7,10 +7,9 @@
#include <obs.h>
#include <util/threading.h>
#include <util/c99defs.h>
#include <util/darray.h>
#include <util/dstr.h>
#include "mac-helpers.h"
#include "audio-device-enum.h"
#define PROPERTY_DEFAULT_DEVICE kAudioHardwarePropertyDefaultInputDevice
#define PROPERTY_FORMATS kAudioStreamPropertyAvailablePhysicalFormats
@@ -51,133 +50,6 @@ struct coreaudio_data {
obs_source_t source;
};
struct device_item {
struct dstr name, value;
};
static inline void device_item_free(struct device_item *item)
{
dstr_free(&item->name);
dstr_free(&item->value);
}
struct device_list {
DARRAY(struct device_item) items;
};
static inline void device_list_add(struct device_list *list,
struct device_item *item)
{
da_push_back(list->items, item);
memset(item, 0, sizeof(struct device_item));
}
static inline void device_list_free(struct device_list *list)
{
for (size_t i = 0; i < list->items.num; i++)
device_item_free(list->items.array+i);
da_free(list->items);
}
/* ugh, because mac has no means of capturing output, we have to basically
* mark soundflower and wavtap as output devices. */
static inline bool device_is_input(char *device)
{
return astrstri(device, "soundflower") == NULL &&
astrstri(device, "wavtap") == NULL;
}
static inline bool enum_success(OSStatus stat, const char *msg)
{
if (stat != noErr) {
blog(LOG_WARNING, "[coreaudio_enum_devices] %s failed: %d",
msg, (int)stat);
return false;
}
return true;
}
static void coreaudio_enum_add_device(struct device_list *list,
AudioDeviceID id, bool input)
{
OSStatus stat;
UInt32 size = 0;
CFStringRef cf_name = NULL;
CFStringRef cf_value = NULL;
struct device_item item;
AudioObjectPropertyAddress addr = {
kAudioDevicePropertyStreams,
kAudioDevicePropertyScopeInput,
kAudioObjectPropertyElementMaster
};
memset(&item, 0, sizeof(item));
/* check to see if it's a mac input device */
AudioObjectGetPropertyDataSize(id, &addr, 0, NULL, &size);
if (!size)
return;
size = sizeof(CFStringRef);
addr.mSelector = kAudioDevicePropertyDeviceUID;
stat = AudioObjectGetPropertyData(id, &addr, 0, NULL, &size, &cf_value);
if (!enum_success(stat, "get audio device UID"))
return;
addr.mSelector = kAudioDevicePropertyDeviceNameCFString;
stat = AudioObjectGetPropertyData(id, &addr, 0, NULL, &size, &cf_name);
if (!enum_success(stat, "get audio device name"))
goto fail;
if (!cf_to_dstr(cf_name, &item.name))
goto fail;
if (!cf_to_dstr(cf_value, &item.value))
goto fail;
if (input || !device_is_input(item.value.array))
device_list_add(list, &item);
fail:
device_item_free(&item);
CFRelease(cf_name);
CFRelease(cf_value);
}
static void coreaudio_enum_devices(struct device_list *list, bool input)
{
AudioObjectPropertyAddress addr = {
kAudioHardwarePropertyDevices,
kAudioObjectPropertyScopeGlobal,
kAudioObjectPropertyElementMaster
};
UInt32 size = 0;
UInt32 count;
OSStatus stat;
AudioDeviceID *ids;
stat = AudioObjectGetPropertyDataSize(kAudioObjectSystemObject, &addr,
0, NULL, &size);
if (!enum_success(stat, "get kAudioObjectSystemObject data size"))
return;
ids = bmalloc(size);
count = size / sizeof(AudioDeviceID);
stat = AudioObjectGetPropertyData(kAudioObjectSystemObject, &addr,
0, NULL, &size, ids);
if (enum_success(stat, "get kAudioObjectSystemObject data"))
for (UInt32 i = 0; i < count; i++)
coreaudio_enum_add_device(list, ids[i], input);
bfree(ids);
}
static bool get_default_output_device(struct coreaudio_data *ca)
{
struct device_list list;