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, 0 insertions, 480 deletions

diff --git a/audio/out/ao_coreaudio_common.c b/audio/out/ao_coreaudio_common.c
deleted file mode 100644
index 1ea9bfe290..0000000000
--- a/audio/out/ao_coreaudio_common.c
+++ /dev/null
@@ -1,480 +0,0 @@
-/*
- * 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/>.
- */
-
-/*
- * This file contains functions interacting with the CoreAudio framework
- * that are not specific to the AUHAL. These are split in a separate file for
- * the sake of readability. In the future the could be used by other AOs based
- * 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 "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)
-{
-    // Extract FourCC letters from the uint32_t and finde out if it's a valid
-    // code that is made of letters.
-    char fcc[4] = {
-        (code >> 24) & 0xFF,
-        (code >> 16) & 0xFF,
-        (code >> 8)  & 0xFF,
-        code         & 0xFF,
-    };
-
-    bool valid_fourcc = true;
-    for (int i = 0; i < 4; i++)
-        if (!isprint(fcc[i]))
-            valid_fourcc = false;
-
-    char *repr;
-    if (valid_fourcc)
-        repr = talloc_asprintf(talloc_ctx, "'%c%c%c%c'",
-                               fcc[0], fcc[1], fcc[2], fcc[3]);
-    else
-        repr = talloc_asprintf(NULL, "%d", code);
-
-    return repr;
-}
-
-static bool check_ca_st(int level, OSStatus code, const char *message)
-{
-    if (code == noErr) return true;
-
-    char *error_string = fourcc_repr(NULL, code);
-    ca_msg(level, "%s (%s)\n", message, error_string);
-    talloc_free(error_string);
-
-    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)
-{
-    uint32_t flags  = asbd->mFormatFlags;
-    char *format    = fourcc_repr(NULL, asbd->mFormatID);
-
-    ca_msg(MSGL_V,
-       "%s %7.1fHz %" PRIu32 "bit [%s]"
-       "[%" PRIu32 "][%" PRIu32 "][%" PRIu32 "]"
-       "[%" PRIu32 "][%" PRIu32 "] "
-       "%s %s %s%s%s%s\n",
-       description, asbd->mSampleRate, asbd->mBitsPerChannel, format,
-       asbd->mFormatFlags, asbd->mBytesPerPacket, asbd->mFramesPerPacket,
-       asbd->mBytesPerFrame, asbd->mChannelsPerFrame,
-       (flags & kAudioFormatFlagIsFloat) ? "float" : "int",
-       (flags & kAudioFormatFlagIsBigEndian) ? "BE" : "LE",
-       (flags & kAudioFormatFlagIsSignedInteger) ? "S" : "U",
-       (flags & kAudioFormatFlagIsPacked) ? " packed" : "",
-       (flags & kAudioFormatFlagIsAlignedHigh) ? " aligned" : "",
-       (flags & kAudioFormatFlagIsNonInterleaved) ? " P" : "");
-
-    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)
-{
-    switch (asbd.mFormatID)
-    case 'IAC3':
-    case 'iac3':
-    case  kAudioFormat60958AC3:
-    case  kAudioFormatAC3:
-        return CONTROL_OK;
-    return CONTROL_FALSE;
-}
-
-static int AudioStreamSupportsDigital(AudioStreamID stream)
-{
-    AudioStreamRangedDescription *formats = NULL;
-
-    /* Retrieve all the stream formats supported by each output stream. */
-    uint32_t size =
-        GetGlobalAudioPropertyArray(stream,
-                                    kAudioStreamPropertyAvailablePhysicalFormats,
-                                    (void **)&formats);
-
-    if (!size) {
-        ca_msg(MSGL_WARN, "Could not get number of stream formats.\n");
-        return CONTROL_FALSE;
-    }
-
-    const int n_formats = size / sizeof(AudioStreamRangedDescription);
-    for (int i = 0; i < n_formats; i++) {
-        AudioStreamBasicDescription asbd = formats[i].mFormat;
-        ca_print_asbd("supported format:", &(asbd));
-        if (AudioFormatIsDigital(asbd)) {
-            free(formats);
-            return CONTROL_TRUE;
-        }
-    }
-
-    free(formats);
-    return CONTROL_FALSE;
-}
-
-static int AudioDeviceSupportsDigital(AudioDeviceID device)
-{
-    AudioStreamID *streams = NULL;
-
-    /* Retrieve all the output streams. */
-    uint32_t size = GetAudioPropertyArray(device,
-                                          kAudioDevicePropertyStreams,
-                                          kAudioDevicePropertyScopeOutput,
-                                          (void **)&streams);
-
-    if (!size) {
-        ca_msg(MSGL_WARN, "could not get number of streams.\n");
-        return CONTROL_FALSE;
-    }
-
-    const int n_streams = size / sizeof(AudioStreamID);
-    for (int i = 0; i < n_streams; i++) {
-        if (AudioStreamSupportsDigital(streams[i])) {
-            free(streams);
-            return CONTROL_OK;
-        }
-    }
-
-    free(streams);
-    return CONTROL_FALSE;
-}
-
-static OSStatus ca_property_listener(AudioObjectPropertySelector selector,
-                                     AudioObjectID object, uint32_t n_addresses,
-                                     const AudioObjectPropertyAddress addresses[],
-                                     void *data)
-{
-    void *talloc_ctx = talloc_new(NULL);
-
-    for (int i = 0; i < n_addresses; i++) {
-        if (addresses[i].mSelector == selector) {
-            ca_msg(MSGL_WARN, "event: property %s changed\n",
-                              fourcc_repr(talloc_ctx, selector));
-            if (data) *(volatile int *)data = 1;
-            break;
-        }
-    }
-    talloc_free(talloc_ctx);
-    return noErr;
-}
-
-static 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)
-{
-    return ca_property_listener(kAudioDevicePropertyDeviceHasChanged,
-                                object, n_addresses, addresses, data);
-}
-
-static OSStatus ca_lock_device(AudioDeviceID device, pid_t *pid) {
-    *pid = getpid();
-    OSStatus err = SetAudioProperty(device, kAudioDevicePropertyHogMode,
-                                    sizeof(*pid), pid);
-    if (err != noErr)
-        *pid = -1;
-
-    return err;
-}
-
-static OSStatus ca_unlock_device(AudioDeviceID device, pid_t *pid) {
-    if (*pid == getpid()) {
-        *pid = -1;
-        return SetAudioProperty(device, kAudioDevicePropertyHogMode,
-                                sizeof(*pid), &pid);
-    }
-    return noErr;
-}
-
-static OSStatus ca_change_mixing(AudioDeviceID device, uint32_t val,
-                                 bool *changed) {
-    *changed = false;
-
-    AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
-        .mSelector = kAudioDevicePropertySupportsMixing,
-        .mScope    = kAudioObjectPropertyScopeGlobal,
-        .mElement  = kAudioObjectPropertyElementMaster,
-    };
-
-    if (AudioObjectHasProperty(device, &p_addr)) {
-        OSStatus err;
-        Boolean writeable = 0;
-        err = IsAudioPropertySettable(device, kAudioDevicePropertySupportsMixing,
-                                      &writeable);
-
-        if (!CHECK_CA_WARN("can't tell if mixing property is settable")) {
-            return err;
-        }
-
-        if (!writeable)
-            return noErr;
-
-        err = SetAudioProperty(device, kAudioDevicePropertySupportsMixing,
-                               sizeof(uint32_t), &val);
-        if (err != noErr)
-            return err;
-
-        if (!CHECK_CA_WARN("can't set mix mode")) {
-            return err;
-        }
-
-        *changed = true;
-    }
-
-    return noErr;
-}
-
-static OSStatus ca_disable_mixing(AudioDeviceID device, bool *changed) {
-    return ca_change_mixing(device, 0, changed);
-}
-
-static OSStatus ca_enable_mixing(AudioDeviceID device, bool changed) {
-    if (changed) {
-        bool dont_care = false;
-        return ca_change_mixing(device, 1, &dont_care);
-    }
-
-    return noErr;
-}
-
-static OSStatus ca_change_device_listening(AudioDeviceID device,
-                                           void *flag, bool enabled)
-{
-    AudioObjectPropertyAddress p_addr = (AudioObjectPropertyAddress) {
-        .mSelector = kAudioDevicePropertyDeviceHasChanged,
-        .mScope    = kAudioObjectPropertyScopeGlobal,
-        .mElement  = kAudioObjectPropertyElementMaster,
-    };
-
-    if (enabled) {
-        return AudioObjectAddPropertyListener(
-            device, &p_addr, ca_device_listener, flag);
-    } else {
-        return AudioObjectRemovePropertyListener(
-            device, &p_addr, ca_device_listener, flag);
-    }
-}
-
-static 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) {
-    return ca_change_device_listening(device, flag, false);
-}
-
-static int AudioStreamChangeFormat(AudioStreamID i_stream_id,
-                                   AudioStreamBasicDescription change_format)
-{
-    OSStatus err = noErr;
-    AudioObjectPropertyAddress p_addr;
-    volatile int stream_format_changed = 0;
-
-    ca_print_asbd("setting stream format:", &change_format);
-
-    /* Install the callback. */
-    p_addr = (AudioObjectPropertyAddress) {
-        .mSelector = kAudioStreamPropertyPhysicalFormat,
-        .mScope    = kAudioObjectPropertyScopeGlobal,
-        .mElement  = kAudioObjectPropertyElementMaster,
-    };
-
-    err = AudioObjectAddPropertyListener(i_stream_id,
-                                         &p_addr,
-                                         ca_stream_listener,
-                                         (void *)&stream_format_changed);
-    if (!CHECK_CA_WARN("can't add property listener during format change")) {
-        return CONTROL_FALSE;
-    }
-
-    /* Change the format. */
-    err = SetAudioProperty(i_stream_id,
-                           kAudioStreamPropertyPhysicalFormat,
-                           sizeof(AudioStreamBasicDescription), &change_format);
-    if (!CHECK_CA_WARN("error changing physical format")) {
-        return CONTROL_FALSE;
-    }
-
-    /* The AudioStreamSetProperty is not only asynchronious,
-     * it is also not Atomic, in its behaviour.
-     * Therefore we check 5 times before we really give up. */
-    bool format_set = CONTROL_FALSE;
-    for (int i = 0; !format_set && i < 5; i++) {
-        for (int j = 0; !stream_format_changed && j < 50; j++)
-            mp_sleep_us(10000);
-
-        if (stream_format_changed) {
-            stream_format_changed = 0;
-        } else {
-            ca_msg(MSGL_V, "reached timeout\n");
-        }
-
-        AudioStreamBasicDescription actual_format;
-        err = GetAudioProperty(i_stream_id,
-                               kAudioStreamPropertyPhysicalFormat,
-                               sizeof(AudioStreamBasicDescription),
-                               &actual_format);
-
-        ca_print_asbd("actual format in use:", &actual_format);
-        if (actual_format.mSampleRate == change_format.mSampleRate &&
-            actual_format.mFormatID == change_format.mFormatID &&
-            actual_format.mFramesPerPacket == change_format.mFramesPerPacket) {
-            format_set = CONTROL_TRUE;
-        }
-    }
-
-    err = AudioObjectRemovePropertyListener(i_stream_id,
-                                            &p_addr,
-                                            ca_stream_listener,
-                                            (void *)&stream_format_changed);
-
-    if (!CHECK_CA_WARN("can't remove property listener")) {
-        return CONTROL_FALSE;
-    }
-
-    return format_set;
-}
-