auto import from //depot/cupcake/@135843

1 files changed, 821 insertions, 0 deletions

diff --git a/audio/coreaudio.c b/audio/coreaudio.c
new file mode 100644
index 0000000..f23ebee
--- /dev/null
+++ b/audio/coreaudio.c
@@ -0,0 +1,821 @@
+/*
+ * QEMU OS X CoreAudio audio driver
+ *
+ * Copyright (c) 2008 The Android Open Source Project
+ * Copyright (c) 2005 Mike Kronenberg
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <CoreAudio/CoreAudio.h>
+#include <string.h>             /* strerror */
+#include <pthread.h>            /* pthread_X */
+
+#include "audio.h"
+
+#define AUDIO_CAP "coreaudio"
+#include "audio_int.h"
+
+#define  ENABLE_IN  1
+
+#if 0
+#  define  D(...)  fprintf(stderr, __VA_ARGS__)
+#else
+#  define  D(...)  ((void)0)
+#endif
+
+struct {
+    int out_buffer_frames;
+    int out_nbuffers;
+    int in_buffer_frames;
+    int in_nbuffers;
+    int isAtexit;
+} conf = {
+    .out_buffer_frames = 512,
+    .out_nbuffers = 4,
+    .in_buffer_frames = 512,
+    .in_nbuffers = 4,
+    .isAtexit = 0
+};
+
+/***************************************************************************************/
+/***************************************************************************************/
+/***                                                                                 ***/
+/***       U T I L I T Y   R O U T I N E S                                           ***/
+/***                                                                                 ***/
+/***************************************************************************************/
+/***************************************************************************************/
+
+static void coreaudio_logstatus (OSStatus status)
+{
+    char *str = "BUG";
+
+    switch(status) {
+    case kAudioHardwareNoError:
+        str = "kAudioHardwareNoError";
+        break;
+
+    case kAudioHardwareNotRunningError:
+        str = "kAudioHardwareNotRunningError";
+        break;
+
+    case kAudioHardwareUnspecifiedError:
+        str = "kAudioHardwareUnspecifiedError";
+        break;
+
+    case kAudioHardwareUnknownPropertyError:
+        str = "kAudioHardwareUnknownPropertyError";
+        break;
+
+    case kAudioHardwareBadPropertySizeError:
+        str = "kAudioHardwareBadPropertySizeError";
+        break;
+
+    case kAudioHardwareIllegalOperationError:
+        str = "kAudioHardwareIllegalOperationError";
+        break;
+
+    case kAudioHardwareBadDeviceError:
+        str = "kAudioHardwareBadDeviceError";
+        break;
+
+    case kAudioHardwareBadStreamError:
+        str = "kAudioHardwareBadStreamError";
+        break;
+
+    case kAudioHardwareUnsupportedOperationError:
+        str = "kAudioHardwareUnsupportedOperationError";
+        break;
+
+    case kAudioDeviceUnsupportedFormatError:
+        str = "kAudioDeviceUnsupportedFormatError";
+        break;
+
+    case kAudioDevicePermissionsError:
+        str = "kAudioDevicePermissionsError";
+        break;
+
+    default:
+        AUD_log (AUDIO_CAP, "Reason: status code %ld\n", status);
+        return;
+    }
+
+    AUD_log (AUDIO_CAP, "Reason: %s\n", str);
+}
+
+static void GCC_FMT_ATTR (2, 3) coreaudio_logerr (
+    OSStatus status,
+    const char *fmt,
+    ...
+    )
+{
+    va_list ap;
+
+    va_start (ap, fmt);
+    AUD_log (AUDIO_CAP, fmt, ap);
+    va_end (ap);
+
+    coreaudio_logstatus (status);
+}
+
+static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 (
+    OSStatus status,
+    const char *typ,
+    const char *fmt,
+    ...
+    )
+{
+    va_list ap;
+
+    AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
+
+    va_start (ap, fmt);
+    AUD_vlog (AUDIO_CAP, fmt, ap);
+    va_end (ap);
+
+    coreaudio_logstatus (status);
+}
+
+static void coreaudio_atexit (void)
+{
+    conf.isAtexit = 1;
+}
+
+/***************************************************************************************/
+/***************************************************************************************/
+/***                                                                                 ***/
+/***       S H A R E D   I N / O U T   V O I C E                                     ***/
+/***                                                                                 ***/
+/***************************************************************************************/
+/***************************************************************************************/
+
+typedef struct coreAudioVoice {
+    pthread_mutex_t              mutex;
+    AudioDeviceID                deviceID;
+    Boolean                      isInput;
+    UInt32                       bufferFrameSize;
+    AudioStreamBasicDescription  streamBasicDescription;
+    AudioDeviceIOProc            ioproc;
+    int                          live;
+    int                          decr;
+    int                          pos;
+} coreaudioVoice;
+
+
+static inline UInt32
+coreaudio_voice_isPlaying (coreaudioVoice*  core)
+{
+    OSStatus status;
+    UInt32 result = 0;
+    UInt32 propertySize = sizeof(core->deviceID);
+    status = AudioDeviceGetProperty(
+        core->deviceID, 0, core->isInput,
+        kAudioDevicePropertyDeviceIsRunning, &propertySize, &result);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr(status,
+                         "Could not determine whether Device is playing\n");
+    }
+    return result;
+}
+
+static int
+coreaudio_voice_lock (coreaudioVoice*  core, const char *fn_name)
+{
+    int err;
+
+    err = pthread_mutex_lock (&core->mutex);
+    if (err) {
+        dolog ("Could not lock voice for %s\nReason: %s\n",
+               fn_name, strerror (err));
+        return -1;
+    }
+    return 0;
+}
+
+static int
+coreaudio_voice_unlock (coreaudioVoice*  core, const char *fn_name)
+{
+    int err;
+
+    err = pthread_mutex_unlock (&core->mutex);
+    if (err) {
+        dolog ("Could not unlock voice for %s\nReason: %s\n",
+               fn_name, strerror (err));
+        return -1;
+    }
+    return 0;
+}
+
+static int
+coreaudio_voice_ctl (coreaudioVoice*  core, int cmd)
+{
+    OSStatus status;
+
+    switch (cmd) {
+    case VOICE_ENABLE:
+        /* start playback */
+        D("%s: %s started\n", __FUNCTION__, core->isInput ? "input" : "output");
+        if (!coreaudio_voice_isPlaying(core)) {
+            status = AudioDeviceStart(core->deviceID, core->ioproc);
+            if (status != kAudioHardwareNoError) {
+                coreaudio_logerr (status, "Could not resume playback\n");
+            }
+        }
+        break;
+
+    case VOICE_DISABLE:
+        /* stop playback */
+        D("%s: %s stopped\n", __FUNCTION__, core->isInput ? "input" : "output");
+        if (!conf.isAtexit) {
+            if (coreaudio_voice_isPlaying(core)) {
+                status = AudioDeviceStop(core->deviceID, core->ioproc);
+                if (status != kAudioHardwareNoError) {
+                    coreaudio_logerr (status, "Could not pause playback\n");
+                }
+            }
+        }
+        break;
+    }
+    return 0;
+}
+
+static void
+coreaudio_voice_fini (coreaudioVoice*  core)
+{
+    OSStatus status;
+    int err;
+
+    if (!conf.isAtexit) {
+        /* stop playback */
+        coreaudio_voice_ctl(core, VOICE_DISABLE);
+
+        /* remove callback */
+        status = AudioDeviceRemoveIOProc(core->deviceID, core->ioproc);
+        if (status != kAudioHardwareNoError) {
+            coreaudio_logerr (status, "Could not remove IOProc\n");
+        }
+    }
+    core->deviceID = kAudioDeviceUnknown;
+
+    /* destroy mutex */
+    err = pthread_mutex_destroy(&core->mutex);
+    if (err) {
+        dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
+    }
+}
+
+
+static int
+coreaudio_voice_init (coreaudioVoice*    core,
+                      audsettings_t*     as,
+                      int                frameSize,
+                      AudioDeviceIOProc  ioproc,
+                      void*              hw,
+                      int                input)
+{
+    OSStatus  status;
+    UInt32    propertySize;
+    int       err;
+    int       bits = 8;
+    AudioValueRange frameRange;
+    const char*  typ = input ? "input" : "playback";
+
+    core->isInput = input ? true : false;
+
+    /* create mutex */
+    err = pthread_mutex_init(&core->mutex, NULL);
+    if (err) {
+        dolog("Could not create mutex\nReason: %s\n", strerror (err));
+        return -1;
+    }
+
+    if (as->fmt == AUD_FMT_S16 || as->fmt == AUD_FMT_U16) {
+        bits = 16;
+    }
+
+    // TODO: audio_pcm_init_info (&hw->info, as);
+    /* open default output device */
+   /* note: we use DefaultSystemOutputDevice because DefaultOutputDevice seems to
+    * always link to the internal speakers, and not the ones selected through system properties
+    * go figure...
+    */
+    propertySize = sizeof(core->deviceID);
+    status = AudioHardwareGetProperty(
+        input ? kAudioHardwarePropertyDefaultInputDevice :
+                kAudioHardwarePropertyDefaultSystemOutputDevice,
+        &propertySize,
+        &core->deviceID);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ,
+                           "Could not get default %s device\n", typ);
+        return -1;
+    }
+    if (core->deviceID == kAudioDeviceUnknown) {
+        dolog ("Could not initialize %s - Unknown Audiodevice\n", typ);
+        return -1;
+    }
+
+    /* get minimum and maximum buffer frame sizes */
+    propertySize = sizeof(frameRange);
+    status = AudioDeviceGetProperty(
+        core->deviceID,
+        0,
+        core->isInput,
+        kAudioDevicePropertyBufferFrameSizeRange,
+        &propertySize,
+        &frameRange);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ,
+                           "Could not get device buffer frame range\n");
+        return -1;
+    }
+
+    if (frameRange.mMinimum > frameSize) {
+        core->bufferFrameSize = (UInt32) frameRange.mMinimum;
+        dolog ("warning: Upsizing Output Buffer Frames to %f\n", frameRange.mMinimum);
+    }
+    else if (frameRange.mMaximum < frameSize) {
+        core->bufferFrameSize = (UInt32) frameRange.mMaximum;
+        dolog ("warning: Downsizing Output Buffer Frames to %f\n", frameRange.mMaximum);
+    }
+    else {
+        core->bufferFrameSize = frameSize;
+    }
+
+    /* set Buffer Frame Size */
+    propertySize = sizeof(core->bufferFrameSize);
+    status = AudioDeviceSetProperty(
+        core->deviceID,
+        NULL,
+        0,
+        core->isInput,
+        kAudioDevicePropertyBufferFrameSize,
+        propertySize,
+        &core->bufferFrameSize);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ,
+                           "Could not set device buffer frame size %ld\n",
+                           core->bufferFrameSize);
+        return -1;
+    }
+
+    /* get Buffer Frame Size */
+    propertySize = sizeof(core->bufferFrameSize);
+    status = AudioDeviceGetProperty(
+        core->deviceID,
+        0,
+        core->isInput,
+        kAudioDevicePropertyBufferFrameSize,
+        &propertySize,
+        &core->bufferFrameSize);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ,
+                           "Could not get device buffer frame size\n");
+        return -1;
+    }
+    // TODO: hw->samples = *pNBuffers * core->bufferFrameSize;
+
+    /* get StreamFormat */
+    propertySize = sizeof(core->streamBasicDescription);
+    status = AudioDeviceGetProperty(
+        core->deviceID,
+        0,
+        core->isInput,
+        kAudioDevicePropertyStreamFormat,
+        &propertySize,
+        &core->streamBasicDescription);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ,
+                           "Could not get Device Stream properties\n");
+        core->deviceID = kAudioDeviceUnknown;
+        return -1;
+    }
+
+    /* set Samplerate */
+    core->streamBasicDescription.mSampleRate = (Float64) as->freq;
+    propertySize = sizeof(core->streamBasicDescription);
+    status = AudioDeviceSetProperty(
+        core->deviceID,
+        0,
+        0,
+        core->isInput,
+        kAudioDevicePropertyStreamFormat,
+        propertySize,
+        &core->streamBasicDescription);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
+                           as->freq);
+        core->deviceID = kAudioDeviceUnknown;
+        return -1;
+    }
+
+    /* set Callback */
+    core->ioproc = ioproc;
+    status = AudioDeviceAddIOProc(core->deviceID, ioproc, hw);
+    if (status != kAudioHardwareNoError) {
+        coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
+        core->deviceID = kAudioDeviceUnknown;
+        return -1;
+    }
+
+    /* start Playback */
+    if (!input && !coreaudio_voice_isPlaying(core)) {
+        status = AudioDeviceStart(core->deviceID, core->ioproc);
+        if (status != kAudioHardwareNoError) {
+            coreaudio_logerr2 (status, typ, "Could not start playback\n");
+            AudioDeviceRemoveIOProc(core->deviceID, core->ioproc);
+            core->deviceID = kAudioDeviceUnknown;
+            return -1;
+        }
+    }
+
+    return 0;
+}
+
+
+/***************************************************************************************/
+/***************************************************************************************/
+/***                                                                                 ***/
+/***       O U T P U T   V O I C E                                                   ***/
+/***                                                                                 ***/
+/***************************************************************************************/
+/***************************************************************************************/
+
+typedef struct coreaudioVoiceOut {
+    HWVoiceOut                   hw;
+    coreaudioVoice               core[1];
+} coreaudioVoiceOut;
+
+#define  CORE_OUT(hw)  ((coreaudioVoiceOut*)(hw))->core
+
+
+static int
+coreaudio_run_out (HWVoiceOut *hw)
+{
+    int live, decr;
+    coreaudioVoice  *core = CORE_OUT(hw);
+
+    if (coreaudio_voice_lock (core, "coreaudio_run_out")) {
+        return 0;
+    }
+
+    live = audio_pcm_hw_get_live_out (hw);
+
+    if (core->decr > live) {
+        ldebug ("core->decr %d live %d core->live %d\n",
+                core->decr,
+                live,
+                core->live);
+    }
+
+    decr        = audio_MIN (core->decr, live);
+    core->decr -= decr;
+    core->live  = live - decr;
+    hw->rpos    = core->pos;
+
+    coreaudio_voice_unlock (core, "coreaudio_run_out");
+    return decr;
+}
+
+
+/* callback to feed audiooutput buffer */
+static OSStatus
+audioOutDeviceIOProc(
+    AudioDeviceID inDevice,
+    const AudioTimeStamp* inNow,
+    const AudioBufferList* inInputData,
+    const AudioTimeStamp* inInputTime,
+    AudioBufferList* outOutputData,
+    const AudioTimeStamp* inOutputTime,
+    void* hwptr)
+{
+    UInt32 frame, frameCount;
+    float *out = outOutputData->mBuffers[0].mData;
+    HWVoiceOut *hw = hwptr;
+    coreaudioVoice *core = CORE_OUT(hw);
+    int rpos, live;
+    st_sample_t *src;
+#ifndef FLOAT_MIXENG
+#ifdef RECIPROCAL
+    const float scale = 1.f / UINT_MAX;
+#else
+    const float scale = UINT_MAX;
+#endif
+#endif
+
+    if (coreaudio_voice_lock (core, "audioDeviceIOProc")) {
+        inInputTime = 0;
+        return 0;
+    }
+
+    frameCount = core->bufferFrameSize;
+    live = core->live;
+
+    /* if there are not enough samples, set signal and return */
+    if (live < frameCount) {
+        inInputTime = 0;
+        coreaudio_voice_unlock (core, "audioDeviceIOProc(empty)");
+        return 0;
+    }
+
+    rpos = core->pos;
+    src = hw->mix_buf + rpos;
+
+    /* fill buffer */
+    for (frame = 0; frame < frameCount; frame++) {
+#ifdef FLOAT_MIXENG
+        *out++ = src[frame].l; /* left channel */
+        *out++ = src[frame].r; /* right channel */
+#else
+#ifdef RECIPROCAL
+        *out++ = src[frame].l * scale; /* left channel */
+        *out++ = src[frame].r * scale; /* right channel */
+#else
+        *out++ = src[frame].l / scale; /* left channel */
+        *out++ = src[frame].r / scale; /* right channel */
+#endif
+#endif
+    }
+
+    rpos = (rpos + frameCount) % hw->samples;
+    core->decr += frameCount;
+    core->pos  = rpos;
+
+    coreaudio_voice_unlock (core, "audioDeviceIOProc");
+    return 0;
+}
+
+static int
+coreaudio_write (SWVoiceOut *sw, void *buf, int len)
+{
+    return audio_pcm_sw_write (sw, buf, len);
+}
+
+static int
+coreaudio_init_out (HWVoiceOut *hw, audsettings_t *as)
+{
+    coreaudioVoice*  core = CORE_OUT(hw);
+    int              err;
+
+    audio_pcm_init_info (&hw->info, as);
+
+    err = coreaudio_voice_init( core, as, conf.out_buffer_frames, audioOutDeviceIOProc, hw, 0 );
+    if (err < 0)
+        return err;
+
+    hw->samples = core->bufferFrameSize * conf.out_nbuffers;
+    return 0;
+}
+
+static void
+coreaudio_fini_out (HWVoiceOut *hw)
+{
+
+    coreaudioVoice*  core = CORE_OUT(hw);
+
+    coreaudio_voice_fini(core);
+}
+
+static int
+coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...)
+{
+    coreaudioVoice*  core = CORE_OUT(hw);
+
+    return coreaudio_voice_ctl(core, cmd);
+}
+
+/***************************************************************************************/
+/***************************************************************************************/
+/***                                                                                 ***/
+/***       I N P U T   V O I C E                                                     ***/
+/***                                                                                 ***/
+/***************************************************************************************/
+/***************************************************************************************/
+
+
+
+typedef struct coreaudioVoiceIn {
+    HWVoiceIn        hw;
+    coreaudioVoice   core[1];
+} coreaudioVoiceIn;
+
+#define  CORE_IN(hw)  ((coreaudioVoiceIn*)(hw))->core
+
+
+static int
+coreaudio_run_in (HWVoiceIn *hw)
+{
+    int decr;
+
+    coreaudioVoice  *core = CORE_IN(hw);
+
+    if (coreaudio_voice_lock (core, "coreaudio_run_in")) {
+        return 0;
+    }
+    D("%s: core.decr=%d core.pos=%d\n", __FUNCTION__, core->decr, core->pos);
+    decr        = core->decr;
+    core->decr -= decr;
+    hw->wpos    = core->pos;
+
+    coreaudio_voice_unlock (core, "coreaudio_run_in");
+    return decr;
+}
+
+
+/* callback to feed audiooutput buffer */
+static OSStatus
+audioInDeviceIOProc(
+    AudioDeviceID inDevice,
+    const AudioTimeStamp* inNow,
+    const AudioBufferList* inInputData,
+    const AudioTimeStamp* inInputTime,
+    AudioBufferList* outOutputData,
+    const AudioTimeStamp* inOutputTime,
+    void* hwptr)
+{
+    UInt32 frame, frameCount;
+    float *in = inInputData->mBuffers[0].mData;
+    HWVoiceIn *hw = hwptr;
+    coreaudioVoice *core = CORE_IN(hw);
+    int wpos, avail;
+    st_sample_t *dst;
+#ifndef FLOAT_MIXENG
+#ifdef RECIPROCAL
+    const float scale = 1.f / UINT_MAX;
+#else
+    const float scale = UINT_MAX;
+#endif
+#endif
+
+    if (coreaudio_voice_lock (core, "audioDeviceIOProc")) {
+        inInputTime = 0;
+        return 0;
+    }
+
+    frameCount = core->bufferFrameSize;
+    avail      = hw->samples - hw->total_samples_captured - core->decr;
+
+    D("%s: enter avail=%d core.decr=%d core.pos=%d hw.samples=%d hw.total_samples_captured=%d frameCount=%d\n",
+      __FUNCTION__, avail, core->decr, core->pos, hw->samples, hw->total_samples_captured, (int)frameCount);
+
+    /* if there are not enough samples, set signal and return */
+    if (avail < frameCount) {
+        inInputTime = 0;
+        coreaudio_voice_unlock (core, "audioDeviceIOProc(empty)");
+        return 0;
+    }
+
+    wpos = core->pos;
+    dst  = hw->conv_buf + wpos;
+
+    /* fill buffer */
+    for (frame = 0; frame < frameCount; frame++) {
+#ifdef FLOAT_MIXENG
+        dst[frame].l = *in++; /* left channel */
+        dst[frame].r = *in++; /* right channel */
+#else
+#ifdef RECIPROCAL
+        dst[frame].l = *in++ * scale; /* left channel */
+        dst[frame].r = *in++ * scale; /* right channel */
+#else
+        dst[frame].l = *in++ / scale; /* left channel */
+        dst[frame].r = *in++ / scale; /* right channel */
+#endif
+#endif
+    }
+
+    wpos = (wpos + frameCount) % hw->samples;
+    core->decr += frameCount;
+    core->pos   = wpos;
+
+    D("exit: core.decr=%d core.pos=%d\n", core->decr, core->pos);
+    coreaudio_voice_unlock (core, "audioDeviceIOProc");
+    return 0;
+}
+
+static int
+coreaudio_read (SWVoiceIn *sw, void *buf, int len)
+{
+    int  result = audio_pcm_sw_read(sw, buf, len);
+    D("%s: audio_pcm_sw_read(%d) returned %d\n", __FUNCTION__, len, result);
+    return result;
+}
+
+static int
+coreaudio_init_in (HWVoiceIn *hw, audsettings_t *as)
+{
+    coreaudioVoice*  core = CORE_IN(hw);
+    int              err;
+
+    audio_pcm_init_info (&hw->info, as);
+
+    err = coreaudio_voice_init( core, as, conf.in_buffer_frames, audioInDeviceIOProc, hw, 1 );
+    if (err < 0) {
+        return err;
+    }
+
+    hw->samples = core->bufferFrameSize * conf.in_nbuffers;
+    return 0;
+}
+
+static void
+coreaudio_fini_in (HWVoiceIn *hw)
+{
+
+    coreaudioVoice*  core = CORE_IN(hw);
+
+    coreaudio_voice_fini(core);
+}
+
+static int
+coreaudio_ctl_in (HWVoiceIn *hw, int cmd, ...)
+{
+    coreaudioVoice*  core = CORE_IN(hw);
+
+    return coreaudio_voice_ctl(core, cmd);
+}
+
+static void*
+coreaudio_audio_init (void)
+{
+    atexit(coreaudio_atexit);
+    return &coreaudio_audio_init;
+}
+
+static void
+coreaudio_audio_fini (void *opaque)
+{
+    (void) opaque;
+}
+
+static struct audio_option coreaudio_options[] = {
+    {"OUT_BUFFER_SIZE", AUD_OPT_INT, &conf.out_buffer_frames,
+     "Size of the output buffer in frames", NULL, 0},
+    {"OUT_BUFFER_COUNT", AUD_OPT_INT, &conf.out_nbuffers,
+     "Number of output buffers", NULL, 0},
+    {"IN_BUFFER_SIZE", AUD_OPT_INT, &conf.in_buffer_frames,
+     "Size of the input buffer in frames", NULL, 0},
+    {"IN_BUFFER_COUNT", AUD_OPT_INT, &conf.in_nbuffers,
+     "Number of input buffers", NULL, 0},
+    {NULL, 0, NULL, NULL, NULL, 0}
+};
+
+static struct audio_pcm_ops coreaudio_pcm_ops = {
+    coreaudio_init_out,
+    coreaudio_fini_out,
+    coreaudio_run_out,
+    coreaudio_write,
+    coreaudio_ctl_out,
+
+#if ENABLE_IN
+    coreaudio_init_in,
+    coreaudio_fini_in,
+    coreaudio_run_in,
+    coreaudio_read,
+    coreaudio_ctl_in
+#else
+    NULL,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+#endif
+};
+
+struct audio_driver coreaudio_audio_driver = {
+    INIT_FIELD (name           = ) "coreaudio",
+    INIT_FIELD (descr          = )
+    "CoreAudio (developer.apple.com/audio/coreaudio.html)",
+    INIT_FIELD (options        = ) coreaudio_options,
+    INIT_FIELD (init           = ) coreaudio_audio_init,
+    INIT_FIELD (fini           = ) coreaudio_audio_fini,
+    INIT_FIELD (pcm_ops        = ) &coreaudio_pcm_ops,
+    INIT_FIELD (can_be_default = ) 1,
+#if ENABLE_IN
+    INIT_FIELD (max_voices_out = ) 1,
+    INIT_FIELD (max_voices_in  = ) 1,
+    INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut),
+    INIT_FIELD (voice_size_in  = ) sizeof (coreaudioVoiceIn),
+#else
+    INIT_FIELD (max_voices_out = ) 1,
+    INIT_FIELD (max_voices_in  = ) 0,
+    INIT_FIELD (voice_size_out = ) sizeof (coreaudioVoiceOut),
+    INIT_FIELD (voice_size_in  = ) 0,
+#endif
+};