[qemu.git] / audio / coreaudio.c

/*
 * QEMU OS X CoreAudio audio driver
 *
 * 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 "qemu-common.h"
#include "audio.h"

#define AUDIO_CAP "coreaudio"
#include "audio_int.h"

struct {
    int buffer_frames;
    int nbuffers;
    int isAtexit;
} conf = {
    .buffer_frames = 512,
    .nbuffers = 4,
    .isAtexit = 0
};

typedef struct coreaudioVoiceOut {
    HWVoiceOut hw;
    pthread_mutex_t mutex;
    int isAtexit;
    AudioDeviceID outputDeviceID;
    UInt32 audioDevicePropertyBufferFrameSize;
    AudioStreamBasicDescription outputStreamBasicDescription;
    int live;
    int decr;
    int rpos;
} coreaudioVoiceOut;

static void coreaudio_logstatus (OSStatus status)
{
    const 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 %" PRId32 "\n", (int32_t)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 inline UInt32 isPlaying (AudioDeviceID outputDeviceID)
{
    OSStatus status;
    UInt32 result = 0;
    UInt32 propertySize = sizeof(outputDeviceID);
    status = AudioDeviceGetProperty(
        outputDeviceID, 0, 0,
        kAudioDevicePropertyDeviceIsRunning, &propertySize, &result);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr(status,
                         "Could not determine whether Device is playing\n");
    }
    return result;
}

static void coreaudio_atexit (void)
{
    conf.isAtexit = 1;
}

static int coreaudio_lock (coreaudioVoiceOut *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_unlock (coreaudioVoiceOut *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_run_out (HWVoiceOut *hw, int live)
{
    int decr;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;

    if (coreaudio_lock (core, "coreaudio_run_out")) {
        return 0;
    }

    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->rpos;

    coreaudio_unlock (core, "coreaudio_run_out");
    return decr;
}

/* callback to feed audiooutput buffer */
static OSStatus audioDeviceIOProc(
    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;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hwptr;
    int rpos, live;
    struct st_sample *src;
#ifndef FLOAT_MIXENG
#ifdef RECIPROCAL
    const float scale = 1.f / UINT_MAX;
#else
    const float scale = UINT_MAX;
#endif
#endif

    if (coreaudio_lock (core, "audioDeviceIOProc")) {
        inInputTime = 0;
        return 0;
    }

    frameCount = core->audioDevicePropertyBufferFrameSize;
    live = core->live;

    /* if there are not enough samples, set signal and return */
    if (live < frameCount) {
        inInputTime = 0;
        coreaudio_unlock (core, "audioDeviceIOProc(empty)");
        return 0;
    }

    rpos = core->rpos;
    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->rpos = rpos;

    coreaudio_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, struct audsettings *as)
{
    OSStatus status;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
    UInt32 propertySize;
    int err;
    const char *typ = "playback";
    AudioValueRange frameRange;

    /* create mutex */
    err = pthread_mutex_init(&core->mutex, NULL);
    if (err) {
        dolog("Could not create mutex\nReason: %s\n", strerror (err));
        return -1;
    }

    audio_pcm_init_info (&hw->info, as);

    /* open default output device */
    propertySize = sizeof(core->outputDeviceID);
    status = AudioHardwareGetProperty(
        kAudioHardwarePropertyDefaultOutputDevice,
        &propertySize,
        &core->outputDeviceID);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ,
                           "Could not get default output Device\n");
        return -1;
    }
    if (core->outputDeviceID == 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->outputDeviceID,
        0,
        0,
        kAudioDevicePropertyBufferFrameSizeRange,
        &propertySize,
        &frameRange);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ,
                           "Could not get device buffer frame range\n");
        return -1;
    }

    if (frameRange.mMinimum > conf.buffer_frames) {
        core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum;
        dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum);
    }
    else if (frameRange.mMaximum < conf.buffer_frames) {
        core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum;
        dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum);
    }
    else {
        core->audioDevicePropertyBufferFrameSize = conf.buffer_frames;
    }

    /* set Buffer Frame Size */
    propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
    status = AudioDeviceSetProperty(
        core->outputDeviceID,
        NULL,
        0,
        false,
        kAudioDevicePropertyBufferFrameSize,
        propertySize,
        &core->audioDevicePropertyBufferFrameSize);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ,
                           "Could not set device buffer frame size %" PRIu32 "\n",
                           (uint32_t)core->audioDevicePropertyBufferFrameSize);
        return -1;
    }

    /* get Buffer Frame Size */
    propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
    status = AudioDeviceGetProperty(
        core->outputDeviceID,
        0,
        false,
        kAudioDevicePropertyBufferFrameSize,
        &propertySize,
        &core->audioDevicePropertyBufferFrameSize);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ,
                           "Could not get device buffer frame size\n");
        return -1;
    }
    hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize;

    /* get StreamFormat */
    propertySize = sizeof(core->outputStreamBasicDescription);
    status = AudioDeviceGetProperty(
        core->outputDeviceID,
        0,
        false,
        kAudioDevicePropertyStreamFormat,
        &propertySize,
        &core->outputStreamBasicDescription);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ,
                           "Could not get Device Stream properties\n");
        core->outputDeviceID = kAudioDeviceUnknown;
        return -1;
    }

    /* set Samplerate */
    core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
    propertySize = sizeof(core->outputStreamBasicDescription);
    status = AudioDeviceSetProperty(
        core->outputDeviceID,
        0,
        0,
        0,
        kAudioDevicePropertyStreamFormat,
        propertySize,
        &core->outputStreamBasicDescription);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
                           as->freq);
        core->outputDeviceID = kAudioDeviceUnknown;
        return -1;
    }

    /* set Callback */
    status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw);
    if (status != kAudioHardwareNoError) {
        coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
        core->outputDeviceID = kAudioDeviceUnknown;
        return -1;
    }

    /* start Playback */
    if (!isPlaying(core->outputDeviceID)) {
        status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
        if (status != kAudioHardwareNoError) {
            coreaudio_logerr2 (status, typ, "Could not start playback\n");
            AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc);
            core->outputDeviceID = kAudioDeviceUnknown;
            return -1;
        }
    }

    return 0;
}

static void coreaudio_fini_out (HWVoiceOut *hw)
{
    OSStatus status;
    int err;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;

    if (!conf.isAtexit) {
        /* stop playback */
        if (isPlaying(core->outputDeviceID)) {
            status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
            if (status != kAudioHardwareNoError) {
                coreaudio_logerr (status, "Could not stop playback\n");
            }
        }

        /* remove callback */
        status = AudioDeviceRemoveIOProc(core->outputDeviceID,
                                         audioDeviceIOProc);
        if (status != kAudioHardwareNoError) {
            coreaudio_logerr (status, "Could not remove IOProc\n");
        }
    }
    core->outputDeviceID = kAudioDeviceUnknown;

    /* destroy mutex */
    err = pthread_mutex_destroy(&core->mutex);
    if (err) {
        dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
    }
}

static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
    OSStatus status;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;

    switch (cmd) {
    case VOICE_ENABLE:
        /* start playback */
        if (!isPlaying(core->outputDeviceID)) {
            status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
            if (status != kAudioHardwareNoError) {
                coreaudio_logerr (status, "Could not resume playback\n");
            }
        }
        break;

    case VOICE_DISABLE:
        /* stop playback */
        if (!conf.isAtexit) {
            if (isPlaying(core->outputDeviceID)) {
                status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
                if (status != kAudioHardwareNoError) {
                    coreaudio_logerr (status, "Could not pause playback\n");
                }
            }
        }
        break;
    }
    return 0;
}

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[] = {
    {
        .name  = "BUFFER_SIZE",
        .tag   = AUD_OPT_INT,
        .valp  = &conf.buffer_frames,
        .descr = "Size of the buffer in frames"
    },
    {
        .name  = "BUFFER_COUNT",
        .tag   = AUD_OPT_INT,
        .valp  = &conf.nbuffers,
        .descr = "Number of buffers"
    },
    { /* End of list */ }
};

static struct audio_pcm_ops coreaudio_pcm_ops = {
    .init_out = coreaudio_init_out,
    .fini_out = coreaudio_fini_out,
    .run_out  = coreaudio_run_out,
    .write    = coreaudio_write,
    .ctl_out  = coreaudio_ctl_out
};

struct audio_driver coreaudio_audio_driver = {
    .name           = "coreaudio",
    .descr          = "CoreAudio http://developer.apple.com/audio/coreaudio.html",
    .options        = coreaudio_options,
    .init           = coreaudio_audio_init,
    .fini           = coreaudio_audio_fini,
    .pcm_ops        = &coreaudio_pcm_ops,
    .can_be_default = 1,
    .max_voices_out = 1,
    .max_voices_in  = 0,
    .voice_size_out = sizeof (coreaudioVoiceOut),
    .voice_size_in  = 0
};
Commit	Line	Data
1d14ffa9 FB	1	/*
	2	* QEMU OS X CoreAudio audio driver
	3	*
	4	* Copyright (c) 2005 Mike Kronenberg
	5	*
	6	* Permission is hereby granted, free of charge, to any person obtaining a copy
	7	* of this software and associated documentation files (the "Software"), to deal
	8	* in the Software without restriction, including without limitation the rights
	9	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	10	* copies of the Software, and to permit persons to whom the Software is
	11	* furnished to do so, subject to the following conditions:
	12	*
	13	* The above copyright notice and this permission notice shall be included in
	14	* all copies or substantial portions of the Software.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	17	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	19	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	20	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
	21	* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
	22	* THE SOFTWARE.
	23	*/
	24
	25	#include <CoreAudio/CoreAudio.h>
	26	#include <string.h> /* strerror */
	27	#include <pthread.h> /* pthread_X */
	28
749bc4bf PB	29	#include "qemu-common.h"
749bc4bf PB	30	#include "audio.h"
1d14ffa9 FB	31
	32	#define AUDIO_CAP "coreaudio"
	33	#include "audio_int.h"
	34
1d14ffa9 FB	35	struct {
1d14ffa9 FB	36	int buffer_frames;
e59c1139	37	int nbuffers;
5e941d4b	38	int isAtexit;
1d14ffa9	39	} conf = {
5e941d4b	40	.buffer_frames = 512,
e59c1139	41	.nbuffers = 4,
5e941d4b	42	.isAtexit = 0
1d14ffa9 FB	43	};
	44
	45	typedef struct coreaudioVoiceOut {
	46	HWVoiceOut hw;
	47	pthread_mutex_t mutex;
5e941d4b	48	int isAtexit;
1d14ffa9	49	AudioDeviceID outputDeviceID;
5e941d4b	50	UInt32 audioDevicePropertyBufferFrameSize;
1d14ffa9	51	AudioStreamBasicDescription outputStreamBasicDescription;
1d14ffa9 FB	52	int live;
	53	int decr;
	54	int rpos;
	55	} coreaudioVoiceOut;
	56
	57	static void coreaudio_logstatus (OSStatus status)
	58	{
d9cbb0f3	59	const char *str = "BUG";
1d14ffa9 FB	60
	61	switch(status) {
	62	case kAudioHardwareNoError:
	63	str = "kAudioHardwareNoError";
	64	break;
	65
	66	case kAudioHardwareNotRunningError:
	67	str = "kAudioHardwareNotRunningError";
	68	break;
	69
	70	case kAudioHardwareUnspecifiedError:
	71	str = "kAudioHardwareUnspecifiedError";
	72	break;
	73
	74	case kAudioHardwareUnknownPropertyError:
	75	str = "kAudioHardwareUnknownPropertyError";
	76	break;
	77
	78	case kAudioHardwareBadPropertySizeError:
	79	str = "kAudioHardwareBadPropertySizeError";
	80	break;
	81
	82	case kAudioHardwareIllegalOperationError:
	83	str = "kAudioHardwareIllegalOperationError";
	84	break;
	85
	86	case kAudioHardwareBadDeviceError:
	87	str = "kAudioHardwareBadDeviceError";
	88	break;
	89
	90	case kAudioHardwareBadStreamError:
	91	str = "kAudioHardwareBadStreamError";
	92	break;
	93
	94	case kAudioHardwareUnsupportedOperationError:
	95	str = "kAudioHardwareUnsupportedOperationError";
	96	break;
	97
	98	case kAudioDeviceUnsupportedFormatError:
	99	str = "kAudioDeviceUnsupportedFormatError";
	100	break;
	101
	102	case kAudioDevicePermissionsError:
	103	str = "kAudioDevicePermissionsError";
	104	break;
	105
	106	default:
744d3644	107	AUD_log (AUDIO_CAP, "Reason: status code %" PRId32 "\n", (int32_t)status);
1d14ffa9 FB	108	return;
	109	}
	110
	111	AUD_log (AUDIO_CAP, "Reason: %s\n", str);
	112	}
	113
	114	static void GCC_FMT_ATTR (2, 3) coreaudio_logerr (
	115	OSStatus status,
	116	const char *fmt,
	117	...
	118	)
	119	{
	120	va_list ap;
	121
	122	va_start (ap, fmt);
	123	AUD_log (AUDIO_CAP, fmt, ap);
	124	va_end (ap);
	125
	126	coreaudio_logstatus (status);
	127	}
	128
	129	static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 (
	130	OSStatus status,
	131	const char *typ,
	132	const char *fmt,
	133	...
	134	)
	135	{
	136	va_list ap;
	137
c0fe3827	138	AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
1d14ffa9 FB	139
	140	va_start (ap, fmt);
	141	AUD_vlog (AUDIO_CAP, fmt, ap);
	142	va_end (ap);
	143
	144	coreaudio_logstatus (status);
	145	}
	146
5e941d4b FB	147	static inline UInt32 isPlaying (AudioDeviceID outputDeviceID)
	148	{
	149	OSStatus status;
	150	UInt32 result = 0;
	151	UInt32 propertySize = sizeof(outputDeviceID);
	152	status = AudioDeviceGetProperty(
	153	outputDeviceID, 0, 0,
	154	kAudioDevicePropertyDeviceIsRunning, &propertySize, &result);
	155	if (status != kAudioHardwareNoError) {
	156	coreaudio_logerr(status,
	157	"Could not determine whether Device is playing\n");
	158	}
	159	return result;
	160	}
	161
	162	static void coreaudio_atexit (void)
	163	{
	164	conf.isAtexit = 1;
	165	}
	166
1d14ffa9 FB	167	static int coreaudio_lock (coreaudioVoiceOut core, const char fn_name)
	168	{
	169	int err;
	170
	171	err = pthread_mutex_lock (&core->mutex);
	172	if (err) {
c0fe3827	173	dolog ("Could not lock voice for %s\nReason: %s\n",
1d14ffa9 FB	174	fn_name, strerror (err));
	175	return -1;
	176	}
	177	return 0;
	178	}
	179
	180	static int coreaudio_unlock (coreaudioVoiceOut core, const char fn_name)
	181	{
	182	int err;
	183
	184	err = pthread_mutex_unlock (&core->mutex);
	185	if (err) {
c0fe3827	186	dolog ("Could not unlock voice for %s\nReason: %s\n",
1d14ffa9 FB	187	fn_name, strerror (err));
	188	return -1;
	189	}
	190	return 0;
	191	}
	192
bdff253c	193	static int coreaudio_run_out (HWVoiceOut *hw, int live)
1d14ffa9	194	{
bdff253c	195	int decr;
1d14ffa9 FB	196	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	197
	198	if (coreaudio_lock (core, "coreaudio_run_out")) {
	199	return 0;
	200	}
	201
1d14ffa9 FB	202	if (core->decr > live) {
	203	ldebug ("core->decr %d live %d core->live %d\n",
	204	core->decr,
	205	live,
	206	core->live);
	207	}
	208
	209	decr = audio_MIN (core->decr, live);
	210	core->decr -= decr;
	211
	212	core->live = live - decr;
	213	hw->rpos = core->rpos;
	214
	215	coreaudio_unlock (core, "coreaudio_run_out");
	216	return decr;
	217	}
	218
	219	/* callback to feed audiooutput buffer */
	220	static OSStatus audioDeviceIOProc(
	221	AudioDeviceID inDevice,
	222	const AudioTimeStamp* inNow,
	223	const AudioBufferList* inInputData,
	224	const AudioTimeStamp* inInputTime,
	225	AudioBufferList* outOutputData,
	226	const AudioTimeStamp* inOutputTime,
	227	void* hwptr)
	228	{
5e941d4b	229	UInt32 frame, frameCount;
1d14ffa9 FB	230	float *out = outOutputData->mBuffers[0].mData;
	231	HWVoiceOut *hw = hwptr;
	232	coreaudioVoiceOut core = (coreaudioVoiceOut ) hwptr;
	233	int rpos, live;
1ea879e5	234	struct st_sample *src;
1d14ffa9 FB	235	#ifndef FLOAT_MIXENG
	236	#ifdef RECIPROCAL
	237	const float scale = 1.f / UINT_MAX;
	238	#else
	239	const float scale = UINT_MAX;
	240	#endif
	241	#endif
	242
	243	if (coreaudio_lock (core, "audioDeviceIOProc")) {
	244	inInputTime = 0;
	245	return 0;
	246	}
	247
5e941d4b	248	frameCount = core->audioDevicePropertyBufferFrameSize;
1d14ffa9 FB	249	live = core->live;
	250
	251	/* if there are not enough samples, set signal and return */
	252	if (live < frameCount) {
	253	inInputTime = 0;
	254	coreaudio_unlock (core, "audioDeviceIOProc(empty)");
	255	return 0;
	256	}
	257
	258	rpos = core->rpos;
	259	src = hw->mix_buf + rpos;
	260
	261	/* fill buffer */
	262	for (frame = 0; frame < frameCount; frame++) {
	263	#ifdef FLOAT_MIXENG
	264	out++ = src[frame].l; / left channel */
	265	out++ = src[frame].r; / right channel */
	266	#else
	267	#ifdef RECIPROCAL
	268	out++ = src[frame].l scale; /* left channel */
	269	out++ = src[frame].r scale; /* right channel */
	270	#else
	271	out++ = src[frame].l / scale; / left channel */
	272	out++ = src[frame].r / scale; / right channel */
	273	#endif
	274	#endif
	275	}
	276
1d14ffa9	277	rpos = (rpos + frameCount) % hw->samples;
5e941d4b	278	core->decr += frameCount;
1d14ffa9 FB	279	core->rpos = rpos;
	280
	281	coreaudio_unlock (core, "audioDeviceIOProc");
	282	return 0;
	283	}
	284
	285	static int coreaudio_write (SWVoiceOut sw, void buf, int len)
	286	{
	287	return audio_pcm_sw_write (sw, buf, len);
	288	}
	289
1ea879e5	290	static int coreaudio_init_out (HWVoiceOut hw, struct audsettings as)
1d14ffa9 FB	291	{
	292	OSStatus status;
	293	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	294	UInt32 propertySize;
	295	int err;
5e941d4b FB	296	const char *typ = "playback";
5e941d4b FB	297	AudioValueRange frameRange;
1d14ffa9 FB	298
	299	/* create mutex */
	300	err = pthread_mutex_init(&core->mutex, NULL);
	301	if (err) {
c0fe3827	302	dolog("Could not create mutex\nReason: %s\n", strerror (err));
1d14ffa9 FB	303	return -1;
	304	}
	305
d929eba5	306	audio_pcm_init_info (&hw->info, as);
1d14ffa9 FB	307
	308	/* open default output device */
	309	propertySize = sizeof(core->outputDeviceID);
	310	status = AudioHardwareGetProperty(
	311	kAudioHardwarePropertyDefaultOutputDevice,
	312	&propertySize,
	313	&core->outputDeviceID);
	314	if (status != kAudioHardwareNoError) {
	315	coreaudio_logerr2 (status, typ,
c0fe3827	316	"Could not get default output Device\n");
1d14ffa9 FB	317	return -1;
	318	}
	319	if (core->outputDeviceID == kAudioDeviceUnknown) {
c0fe3827	320	dolog ("Could not initialize %s - Unknown Audiodevice\n", typ);
1d14ffa9 FB	321	return -1;
	322	}
	323
5e941d4b FB	324	/* get minimum and maximum buffer frame sizes */
	325	propertySize = sizeof(frameRange);
	326	status = AudioDeviceGetProperty(
	327	core->outputDeviceID,
	328	0,
	329	0,
	330	kAudioDevicePropertyBufferFrameSizeRange,
	331	&propertySize,
	332	&frameRange);
	333	if (status != kAudioHardwareNoError) {
	334	coreaudio_logerr2 (status, typ,
	335	"Could not get device buffer frame range\n");
	336	return -1;
	337	}
	338
	339	if (frameRange.mMinimum > conf.buffer_frames) {
	340	core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum;
	341	dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum);
	342	}
	343	else if (frameRange.mMaximum < conf.buffer_frames) {
	344	core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum;
	345	dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum);
	346	}
	347	else {
	348	core->audioDevicePropertyBufferFrameSize = conf.buffer_frames;
	349	}
	350
	351	/* set Buffer Frame Size */
	352	propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	353	status = AudioDeviceSetProperty(
	354	core->outputDeviceID,
	355	NULL,
	356	0,
	357	false,
5e941d4b	358	kAudioDevicePropertyBufferFrameSize,
1d14ffa9	359	propertySize,
5e941d4b	360	&core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	361	if (status != kAudioHardwareNoError) {
1d14ffa9 FB	362	coreaudio_logerr2 (status, typ,
cbc36cb0 AF	363	"Could not set device buffer frame size %" PRIu32 "\n",
cbc36cb0 AF	364	(uint32_t)core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	365	return -1;
	366	}
	367
5e941d4b FB	368	/* get Buffer Frame Size */
5e941d4b FB	369	propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	370	status = AudioDeviceGetProperty(
	371	core->outputDeviceID,
	372	0,
	373	false,
5e941d4b	374	kAudioDevicePropertyBufferFrameSize,
1d14ffa9	375	&propertySize,
5e941d4b	376	&core->audioDevicePropertyBufferFrameSize);
1d14ffa9	377	if (status != kAudioHardwareNoError) {
5e941d4b FB	378	coreaudio_logerr2 (status, typ,
5e941d4b FB	379	"Could not get device buffer frame size\n");
1d14ffa9 FB	380	return -1;
1d14ffa9 FB	381	}
e59c1139	382	hw->samples = conf.nbuffers * core->audioDevicePropertyBufferFrameSize;
1d14ffa9 FB	383
	384	/* get StreamFormat */
	385	propertySize = sizeof(core->outputStreamBasicDescription);
	386	status = AudioDeviceGetProperty(
	387	core->outputDeviceID,
	388	0,
	389	false,
	390	kAudioDevicePropertyStreamFormat,
	391	&propertySize,
	392	&core->outputStreamBasicDescription);
	393	if (status != kAudioHardwareNoError) {
	394	coreaudio_logerr2 (status, typ,
c0fe3827	395	"Could not get Device Stream properties\n");
1d14ffa9 FB	396	core->outputDeviceID = kAudioDeviceUnknown;
	397	return -1;
	398	}
	399
	400	/* set Samplerate */
5e941d4b	401	core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
1d14ffa9 FB	402	propertySize = sizeof(core->outputStreamBasicDescription);
	403	status = AudioDeviceSetProperty(
	404	core->outputDeviceID,
	405	0,
	406	0,
	407	0,
	408	kAudioDevicePropertyStreamFormat,
	409	propertySize,
	410	&core->outputStreamBasicDescription);
	411	if (status != kAudioHardwareNoError) {
575b5dc4 FB	412	coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
575b5dc4 FB	413	as->freq);
1d14ffa9 FB	414	core->outputDeviceID = kAudioDeviceUnknown;
	415	return -1;
	416	}
	417
	418	/* set Callback */
	419	status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw);
	420	if (status != kAudioHardwareNoError) {
c0fe3827	421	coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
1d14ffa9 FB	422	core->outputDeviceID = kAudioDeviceUnknown;
	423	return -1;
	424	}
	425
	426	/* start Playback */
5e941d4b	427	if (!isPlaying(core->outputDeviceID)) {
1d14ffa9 FB	428	status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
1d14ffa9 FB	429	if (status != kAudioHardwareNoError) {
c0fe3827	430	coreaudio_logerr2 (status, typ, "Could not start playback\n");
1d14ffa9 FB	431	AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc);
	432	core->outputDeviceID = kAudioDeviceUnknown;
	433	return -1;
	434	}
1d14ffa9 FB	435	}
	436
	437	return 0;
	438	}
	439
	440	static void coreaudio_fini_out (HWVoiceOut *hw)
	441	{
	442	OSStatus status;
	443	int err;
	444	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	445
5e941d4b FB	446	if (!conf.isAtexit) {
	447	/* stop playback */
	448	if (isPlaying(core->outputDeviceID)) {
	449	status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
	450	if (status != kAudioHardwareNoError) {
	451	coreaudio_logerr (status, "Could not stop playback\n");
	452	}
1d14ffa9	453	}
1d14ffa9	454
5e941d4b FB	455	/* remove callback */
	456	status = AudioDeviceRemoveIOProc(core->outputDeviceID,
	457	audioDeviceIOProc);
	458	if (status != kAudioHardwareNoError) {
	459	coreaudio_logerr (status, "Could not remove IOProc\n");
	460	}
1d14ffa9 FB	461	}
	462	core->outputDeviceID = kAudioDeviceUnknown;
	463
	464	/* destroy mutex */
	465	err = pthread_mutex_destroy(&core->mutex);
	466	if (err) {
c0fe3827	467	dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
1d14ffa9 FB	468	}
	469	}
	470
	471	static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...)
	472	{
	473	OSStatus status;
	474	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	475
	476	switch (cmd) {
	477	case VOICE_ENABLE:
	478	/* start playback */
5e941d4b	479	if (!isPlaying(core->outputDeviceID)) {
1d14ffa9 FB	480	status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
1d14ffa9 FB	481	if (status != kAudioHardwareNoError) {
5e941d4b	482	coreaudio_logerr (status, "Could not resume playback\n");
1d14ffa9	483	}
1d14ffa9 FB	484	}
	485	break;
	486
	487	case VOICE_DISABLE:
	488	/* stop playback */
5e941d4b FB	489	if (!conf.isAtexit) {
	490	if (isPlaying(core->outputDeviceID)) {
	491	status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
	492	if (status != kAudioHardwareNoError) {
	493	coreaudio_logerr (status, "Could not pause playback\n");
	494	}
1d14ffa9	495	}
1d14ffa9 FB	496	}
	497	break;
	498	}
	499	return 0;
	500	}
	501
	502	static void *coreaudio_audio_init (void)
	503	{
5e941d4b	504	atexit(coreaudio_atexit);
1d14ffa9 FB	505	return &coreaudio_audio_init;
	506	}
	507
	508	static void coreaudio_audio_fini (void *opaque)
	509	{
	510	(void) opaque;
	511	}
	512
	513	static struct audio_option coreaudio_options[] = {
98f9f48c	514	{
	515	.name = "BUFFER_SIZE",
	516	.tag = AUD_OPT_INT,
	517	.valp = &conf.buffer_frames,
	518	.descr = "Size of the buffer in frames"
	519	},
	520	{
	521	.name = "BUFFER_COUNT",
	522	.tag = AUD_OPT_INT,
	523	.valp = &conf.nbuffers,
	524	.descr = "Number of buffers"
	525	},
2700efa3	526	{ /* End of list */ }
1d14ffa9 FB	527	};
1d14ffa9 FB	528
35f4b58c	529	static struct audio_pcm_ops coreaudio_pcm_ops = {
1dd3e4d1 JQ	530	.init_out = coreaudio_init_out,
	531	.fini_out = coreaudio_fini_out,
	532	.run_out = coreaudio_run_out,
	533	.write = coreaudio_write,
	534	.ctl_out = coreaudio_ctl_out
1d14ffa9 FB	535	};
	536
	537	struct audio_driver coreaudio_audio_driver = {
bee37f32 JQ	538	.name = "coreaudio",
	539	.descr = "CoreAudio http://developer.apple.com/audio/coreaudio.html",
	540	.options = coreaudio_options,
	541	.init = coreaudio_audio_init,
	542	.fini = coreaudio_audio_fini,
	543	.pcm_ops = &coreaudio_pcm_ops,
	544	.can_be_default = 1,
	545	.max_voices_out = 1,
	546	.max_voices_in = 0,
	547	.voice_size_out = sizeof (coreaudioVoiceOut),
	548	.voice_size_in = 0
1d14ffa9	549	};