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authorStefano Pigozzi <stefano.pigozzi@gmail.com>2013-07-13 09:48:10 +0200
committerStefano Pigozzi <stefano.pigozzi@gmail.com>2013-07-22 21:53:18 +0200
commit1e379655971b7d263189f5e001a0f5724a8657f7 (patch)
tree74e9c444e5cd693b9703210fca2a7caf06379576 /audio
parent5a195845e3a5b37f1081546e275858bedb85f755 (diff)
downloadmpv-1e379655971b7d263189f5e001a0f5724a8657f7.tar.bz2
mpv-1e379655971b7d263189f5e001a0f5724a8657f7.tar.xz
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
Diffstat (limited to 'audio')
-rw-r--r--audio/out/ao_coreaudio.c17
-rw-r--r--audio/out/ao_coreaudio_properties.c126
-rw-r--r--audio/out/ao_coreaudio_properties.h49
-rw-r--r--audio/out/ao_coreaudio_utils.c (renamed from audio/out/ao_coreaudio_common.c)178
-rw-r--r--audio/out/ao_coreaudio_utils.h77
5 files changed, 287 insertions, 160 deletions
diff --git a/audio/out/ao_coreaudio.c b/audio/out/ao_coreaudio.c
index 1a1c64ba47..00694943c6 100644
--- a/audio/out/ao_coreaudio.c
+++ b/audio/out/ao_coreaudio.c
@@ -33,14 +33,14 @@
*/
#include "config.h"
-
-#include "audio/out/ao_coreaudio_common.c"
-
#include "ao.h"
#include "audio/format.h"
#include "osdep/timer.h"
#include "core/subopt-helper.h"
#include "core/mp_ring.h"
+#include "core/mp_msg.h"
+#include "audio/out/ao_coreaudio_properties.h"
+#include "audio/out/ao_coreaudio_utils.h"
static void audio_pause(struct ao *ao);
static void audio_resume(struct ao *ao);
@@ -281,9 +281,9 @@ static int init(struct ao *ao, char *params)
AudioDeviceID selected_device = 0;
if (device_opt < 0) {
// device not set by user, get the default one
- err = GetAudioProperty(kAudioObjectSystemObject,
- kAudioHardwarePropertyDefaultOutputDevice,
- sizeof(uint32_t), &selected_device);
+ err = CA_GET(kAudioObjectSystemObject,
+ kAudioHardwarePropertyDefaultOutputDevice,
+ &selected_device);
CHECK_CA_ERROR("could not get default audio device");
} else {
selected_device = device_opt;
@@ -551,10 +551,7 @@ static int init_digital(struct ao *ao, AudioStreamBasicDescription asbd)
uint32_t size;
uint32_t is_alive = 1;
- err = GetAudioProperty(p->device,
- kAudioDevicePropertyDeviceIsAlive,
- sizeof(uint32_t), &is_alive);
-
+ err = CA_GET(p->device, kAudioDevicePropertyDeviceIsAlive, &is_alive);
CHECK_CA_WARN( "could not check whether device is alive");
if (!is_alive)
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);
+}
+
diff --git a/audio/out/ao_coreaudio_properties.h b/audio/out/ao_coreaudio_properties.h
new file mode 100644
index 0000000000..8f7cc2907b
--- /dev/null
+++ b/audio/out/ao_coreaudio_properties.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of mpv.
+ * Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
+ *
+ * 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/>.
+ */
+
+#ifndef MPV_COREAUDIO_PROPERTIES_H
+#define MPV_COREAUDIO_PROPERTIES_H
+
+#include <AudioToolbox/AudioToolbox.h>
+
+OSStatus ca_get(AudioObjectID id, AudioObjectPropertySelector selector,
+ uint32_t size, void *data);
+
+#define CA_GET(id, selector, data) ca_get(id, selector, sizeof(*(data)), data)
+
+uint32_t GetAudioPropertyArray(AudioObjectID id,
+ AudioObjectPropertySelector selector,
+ AudioObjectPropertyScope scope, void **data);
+
+uint32_t GetGlobalAudioPropertyArray(AudioObjectID id,
+ AudioObjectPropertySelector selector,
+ void **data);
+
+OSStatus GetAudioPropertyString(AudioObjectID id,
+ AudioObjectPropertySelector selector,
+ char **data);
+
+OSStatus SetAudioProperty(AudioObjectID id,
+ AudioObjectPropertySelector selector,
+ uint32_t size, void *data);
+
+Boolean IsAudioPropertySettable(AudioObjectID id,
+ AudioObjectPropertySelector selector,
+ Boolean *outData);
+
+#endif /* MPV_COREAUDIO_PROPERTIES_H */
diff --git a/audio/out/ao_coreaudio_common.c b/audio/out/ao_coreaudio_utils.c
index 1ea9bfe290..bbeaa8bd1c 100644
--- a/audio/out/ao_coreaudio_common.c
+++ b/audio/out/ao_coreaudio_utils.c
@@ -22,17 +22,14 @@
* on CoreAudio but not the AUHAL (such as using AudioQueue services).
*/
-#include <AudioToolbox/AudioToolbox.h>
-#include <AudioUnit/AudioUnit.h>
-#include <inttypes.h>
-#include <stdbool.h>
+#include "audio/out/ao_coreaudio_utils.h"
+#include "audio/out/ao_coreaudio_properties.h"
#include "osdep/timer.h"
-#include "core/mp_msg.h"
#define ca_msg(a, b ...) mp_msg(MSGT_AO, a, "AO: [coreaudio] " b)
#define CA_CFSTR_ENCODING kCFStringEncodingASCII
-static char *fourcc_repr(void *talloc_ctx, uint32_t code)
+char *fourcc_repr(void *talloc_ctx, uint32_t code)
{
// Extract FourCC letters from the uint32_t and finde out if it's a valid
// code that is made of letters.
@@ -58,7 +55,7 @@ static char *fourcc_repr(void *talloc_ctx, uint32_t code)
return repr;
}
-static bool check_ca_st(int level, OSStatus code, const char *message)
+bool check_ca_st(int level, OSStatus code, const char *message)
{
if (code == noErr) return true;
@@ -69,18 +66,8 @@ static bool check_ca_st(int level, OSStatus code, const char *message)
return false;
}
-#define CHECK_CA_ERROR_L(label, message) \
- do { \
- if (!check_ca_st(MSGL_ERR, err, message)) { \
- goto label; \
- } \
- } while (0)
-
-#define CHECK_CA_ERROR(message) CHECK_CA_ERROR_L(coreaudio_error, message)
-#define CHECK_CA_WARN(message) check_ca_st(MSGL_WARN, err, message)
-
-static void ca_print_asbd(const char *description,
- const AudioStreamBasicDescription *asbd)
+void ca_print_asbd(const char *description,
+ const AudioStreamBasicDescription *asbd)
{
uint32_t flags = asbd->mFormatFlags;
char *format = fourcc_repr(NULL, asbd->mFormatID);
@@ -103,112 +90,7 @@ static void ca_print_asbd(const char *description,
talloc_free(format);
}
-static OSStatus GetAudioProperty(AudioObjectID id,
- AudioObjectPropertySelector selector,
- UInt32 outSize, void *outData)
-{
- AudioObjectPropertyAddress p_addr;
-
- p_addr.mSelector = selector;
- p_addr.mScope = kAudioObjectPropertyScopeGlobal;
- p_addr.mElement = kAudioObjectPropertyElementMaster;
-
- return AudioObjectGetPropertyData(id, &p_addr, 0, NULL, &outSize,
- outData);
-}
-
-static UInt32 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;
-}
-
-static UInt32 GetGlobalAudioPropertyArray(AudioObjectID id,
- AudioObjectPropertySelector selector,
- void **outData)
-{
- return GetAudioPropertyArray(id, selector, kAudioObjectPropertyScopeGlobal,
- outData);
-}
-
-static 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;
-}
-
-static OSStatus SetAudioProperty(AudioObjectID id,
- AudioObjectPropertySelector selector,
- UInt32 inDataSize, void *inData)
-{
- AudioObjectPropertyAddress p_addr;
-
- p_addr.mSelector = selector;
- p_addr.mScope = kAudioObjectPropertyScopeGlobal;
- p_addr.mElement = kAudioObjectPropertyElementMaster;
-
- return AudioObjectSetPropertyData(id, &p_addr, 0, NULL,
- inDataSize, inData);
-}
-
-static Boolean IsAudioPropertySettable(AudioObjectID id,
- AudioObjectPropertySelector selector,
- Boolean *outData)
-{
- AudioObjectPropertyAddress p_addr;
-
- p_addr.mSelector = selector;
- p_addr.mScope = kAudioObjectPropertyScopeGlobal;
- p_addr.mElement = kAudioObjectPropertyElementMaster;
-
- return AudioObjectIsPropertySettable(id, &p_addr, outData);
-}
-
-static int AudioFormatIsDigital(AudioStreamBasicDescription asbd)
+int AudioFormatIsDigital(AudioStreamBasicDescription asbd)
{
switch (asbd.mFormatID)
case 'IAC3':
@@ -219,7 +101,7 @@ static int AudioFormatIsDigital(AudioStreamBasicDescription asbd)
return CONTROL_FALSE;
}
-static int AudioStreamSupportsDigital(AudioStreamID stream)
+int AudioStreamSupportsDigital(AudioStreamID stream)
{
AudioStreamRangedDescription *formats = NULL;
@@ -248,7 +130,7 @@ static int AudioStreamSupportsDigital(AudioStreamID stream)
return CONTROL_FALSE;
}
-static int AudioDeviceSupportsDigital(AudioDeviceID device)
+int AudioDeviceSupportsDigital(AudioDeviceID device)
{
AudioStreamID *streams = NULL;
@@ -275,10 +157,10 @@ static int AudioDeviceSupportsDigital(AudioDeviceID device)
return CONTROL_FALSE;
}
-static OSStatus ca_property_listener(AudioObjectPropertySelector selector,
- AudioObjectID object, uint32_t n_addresses,
- const AudioObjectPropertyAddress addresses[],
- void *data)
+OSStatus ca_property_listener(AudioObjectPropertySelector selector,
+ AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data)
{
void *talloc_ctx = talloc_new(NULL);
@@ -294,23 +176,23 @@ static OSStatus ca_property_listener(AudioObjectPropertySelector selector,
return noErr;
}
-static OSStatus ca_stream_listener(AudioObjectID object, uint32_t n_addresses,
- const AudioObjectPropertyAddress addresses[],
- void *data)
+OSStatus ca_stream_listener(AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data)
{
return ca_property_listener(kAudioStreamPropertyPhysicalFormat,
object, n_addresses, addresses, data);
}
-static OSStatus ca_device_listener(AudioObjectID object, uint32_t n_addresses,
- const AudioObjectPropertyAddress addresses[],
- void *data)
+OSStatus ca_device_listener(AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data)
{
return ca_property_listener(kAudioDevicePropertyDeviceHasChanged,
object, n_addresses, addresses, data);
}
-static OSStatus ca_lock_device(AudioDeviceID device, pid_t *pid) {
+OSStatus ca_lock_device(AudioDeviceID device, pid_t *pid) {
*pid = getpid();
OSStatus err = SetAudioProperty(device, kAudioDevicePropertyHogMode,
sizeof(*pid), pid);
@@ -320,7 +202,7 @@ static OSStatus ca_lock_device(AudioDeviceID device, pid_t *pid) {
return err;
}
-static OSStatus ca_unlock_device(AudioDeviceID device, pid_t *pid) {
+OSStatus ca_unlock_device(AudioDeviceID device, pid_t *pid) {
if (*pid == getpid()) {
*pid = -1;
return SetAudioProperty(device, kAudioDevicePropertyHogMode,
@@ -367,11 +249,11 @@ static OSStatus ca_change_mixing(AudioDeviceID device, uint32_t val,
return noErr;
}
-static OSStatus ca_disable_mixing(AudioDeviceID device, bool *changed) {
+OSStatus ca_disable_mixing(AudioDeviceID device, bool *changed) {
return ca_change_mixing(device, 0, changed);
}
-static OSStatus ca_enable_mixing(AudioDeviceID device, bool changed) {
+OSStatus ca_enable_mixing(AudioDeviceID device, bool changed) {
if (changed) {
bool dont_care = false;
return ca_change_mixing(device, 1, &dont_care);
@@ -398,16 +280,16 @@ static OSStatus ca_change_device_listening(AudioDeviceID device,
}
}
-static OSStatus ca_enable_device_listener(AudioDeviceID device, void *flag) {
+OSStatus ca_enable_device_listener(AudioDeviceID device, void *flag) {
return ca_change_device_listening(device, flag, true);
}
-static OSStatus ca_disable_device_listener(AudioDeviceID device, void *flag) {
+OSStatus ca_disable_device_listener(AudioDeviceID device, void *flag) {
return ca_change_device_listening(device, flag, false);
}
-static int AudioStreamChangeFormat(AudioStreamID i_stream_id,
- AudioStreamBasicDescription change_format)
+int AudioStreamChangeFormat(AudioStreamID i_stream_id,
+ AudioStreamBasicDescription change_format)
{
OSStatus err = noErr;
AudioObjectPropertyAddress p_addr;
@@ -453,10 +335,7 @@ static int AudioStreamChangeFormat(AudioStreamID i_stream_id,
}
AudioStreamBasicDescription actual_format;
- err = GetAudioProperty(i_stream_id,
- kAudioStreamPropertyPhysicalFormat,
- sizeof(AudioStreamBasicDescription),
- &actual_format);
+ err = CA_GET(i_stream_id, kAudioStreamPropertyPhysicalFormat, &actual_format);
ca_print_asbd("actual format in use:", &actual_format);
if (actual_format.mSampleRate == change_format.mSampleRate &&
@@ -477,4 +356,3 @@ static int AudioStreamChangeFormat(AudioStreamID i_stream_id,
return format_set;
}
-
diff --git a/audio/out/ao_coreaudio_utils.h b/audio/out/ao_coreaudio_utils.h
new file mode 100644
index 0000000000..dd68ed1082
--- /dev/null
+++ b/audio/out/ao_coreaudio_utils.h
@@ -0,0 +1,77 @@
+/*
+ * This file is part of mpv.
+ * Copyright (c) 2013 Stefano Pigozzi <stefano.pigozzi@gmail.com>
+ *
+ * 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/>.
+ */
+
+#ifndef MPV_COREAUDIO_UTILS_H
+#define MPV_COREAUDIO_UTILS_H
+
+#include <AudioToolbox/AudioToolbox.h>
+#include <inttypes.h>
+#include <stdbool.h>
+#include "core/mp_msg.h"
+
+#define ca_msg(a, b ...) mp_msg(MSGT_AO, a, "AO: [coreaudio] " b)
+#define CA_CFSTR_ENCODING kCFStringEncodingASCII
+
+char *fourcc_repr(void *talloc_ctx, uint32_t code);
+bool check_ca_st(int level, OSStatus code, const char *message);
+
+#define CHECK_CA_ERROR_L(label, message) \
+ do { \
+ if (!check_ca_st(MSGL_ERR, err, message)) { \
+ goto label; \
+ } \
+ } while (0)
+
+#define CHECK_CA_ERROR(message) CHECK_CA_ERROR_L(coreaudio_error, message)
+#define CHECK_CA_WARN(message) check_ca_st(MSGL_WARN, err, message)
+
+void ca_print_asbd(const char *description,
+ const AudioStreamBasicDescription *asbd);
+
+int AudioFormatIsDigital(AudioStreamBasicDescription asbd);
+int AudioStreamSupportsDigital(AudioStreamID stream);
+int AudioDeviceSupportsDigital(AudioDeviceID device);
+
+OSStatus ca_property_listener(AudioObjectPropertySelector selector,
+ AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data);
+
+OSStatus ca_stream_listener(AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data);
+
+OSStatus ca_device_listener(AudioObjectID object, uint32_t n_addresses,
+ const AudioObjectPropertyAddress addresses[],
+ void *data);
+
+OSStatus ca_lock_device(AudioDeviceID device, pid_t *pid);
+OSStatus ca_unlock_device(AudioDeviceID device, pid_t *pid);
+OSStatus ca_disable_mixing(AudioDeviceID device, bool *changed);
+OSStatus ca_enable_mixing(AudioDeviceID device, bool changed);
+OSStatus ca_enable_device_listener(AudioDeviceID device, void *flag);
+OSStatus ca_disable_device_listener(AudioDeviceID device, void *flag);
+
+int AudioStreamChangeFormat(AudioStreamID i_stream_id,
+ AudioStreamBasicDescription change_format);
+
+bool ca_bitmap_from_ch_descriptions(AudioChannelLayout layout,
+ uint32_t *bitmap);
+bool ca_bitmap_from_ch_tag(AudioChannelLayout layout, uint32_t *bitmap);
+
+#endif /* MPV_COREAUDIO_UTILS_H */