ao_coreaudio: split ao_coreaudio_common in two files

 * ao_coreaudio_utils: contains several utility function
 * ao_coreaudio_properties: contains functions to set and get  audio object
   properties.

Conflicts:
	audio/out/ao_coreaudio.c

1 files changed, 126 insertions, 0 deletions

diff --git a/audio/out/ao_coreaudio_properties.c b/audio/out/ao_coreaudio_properties.c
new file mode 100644
index 0000000000..ee6b06a153
--- /dev/null
+++ b/audio/out/ao_coreaudio_properties.c
@@ -0,0 +1,126 @@
+/*
+ * This file is part of mpv.
+ *
+ * mpv is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * mpv is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with mpv.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+ * Abstractions on the CoreAudio API to make property setting/getting suck les
+*/
+
+#include "audio/out/ao_coreaudio_properties.h"
+#include "audio/out/ao_coreaudio_utils.h"
+
+OSStatus ca_get(AudioObjectID id, AudioObjectPropertySelector selector,
+                uint32_t size, void *data)
+{
+    AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
+        .mSelector = selector,
+        .mScope    = kAudioObjectPropertyScopeGlobal,
+        .mElement  = kAudioObjectPropertyElementMaster,
+    };
+
+    return AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &size, data);
+}
+
+uint32_t GetAudioPropertyArray(AudioObjectID id,
+                               AudioObjectPropertySelector selector,
+                               AudioObjectPropertyScope scope, void **data)
+{
+    OSStatus err;
+    AudioObjectPropertyAddress p_addr;
+    UInt32 p_size;
+
+    p_addr.mSelector = selector;
+    p_addr.mScope    = scope;
+    p_addr.mElement  = kAudioObjectPropertyElementMaster;
+
+    err = AudioObjectGetPropertyDataSize(id, &p_addr, 0, NULL, &p_size);
+    CHECK_CA_ERROR("Can't fetch property size");
+
+    *data = malloc(p_size);
+
+    err = AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &p_size, *data);
+    CHECK_CA_ERROR_L(coreaudio_error_free, "Can't fetch property data %s");
+
+    return p_size;
+
+coreaudio_error_free:
+    free(*data);
+coreaudio_error:
+    return 0;
+}
+
+uint32_t GetGlobalAudioPropertyArray(AudioObjectID id,
+                                     AudioObjectPropertySelector selector,
+                                     void **data)
+{
+    return GetAudioPropertyArray(id, selector, kAudioObjectPropertyScopeGlobal,
+                                 data);
+}
+
+OSStatus GetAudioPropertyString(AudioObjectID id,
+                                AudioObjectPropertySelector selector,
+                                char **data)
+{
+    OSStatus err;
+    AudioObjectPropertyAddress p_addr;
+    UInt32 p_size = sizeof(CFStringRef);
+    CFStringRef string;
+
+    p_addr.mSelector = selector;
+    p_addr.mScope    = kAudioObjectPropertyScopeGlobal;
+    p_addr.mElement  = kAudioObjectPropertyElementMaster;
+
+    err = AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &p_size, &string);
+    CHECK_CA_ERROR("Can't fetch array property");
+
+    CFIndex size =
+        CFStringGetMaximumSizeForEncoding(
+            CFStringGetLength(string), CA_CFSTR_ENCODING) + 1;
+
+    *data = malloc(size);
+    CFStringGetCString(string, *data, size, CA_CFSTR_ENCODING);
+    CFRelease(string);
+coreaudio_error:
+    return err;
+}
+
+OSStatus SetAudioProperty(AudioObjectID id,
+                          AudioObjectPropertySelector selector,
+                          uint32_t size, void *data)
+{
+    AudioObjectPropertyAddress p_addr;
+
+    p_addr.mSelector = selector;
+    p_addr.mScope    = kAudioObjectPropertyScopeGlobal;
+    p_addr.mElement  = kAudioObjectPropertyElementMaster;
+
+    return AudioObjectSetPropertyData(id, &p_addr, 0, NULL,
+                                      size, data);
+}
+
+Boolean IsAudioPropertySettable(AudioObjectID id,
+                                AudioObjectPropertySelector selector,
+                                Boolean *data)
+{
+    AudioObjectPropertyAddress p_addr;
+
+    p_addr.mSelector = selector;
+    p_addr.mScope    = kAudioObjectPropertyScopeGlobal;
+    p_addr.mElement  = kAudioObjectPropertyElementMaster;
+
+    return AudioObjectIsPropertySettable(id, &p_addr, data);
+}
+