[mirror_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"

static int isAtexit;

typedef struct {
    int buffer_frames;
    int nbuffers;
} CoreaudioConf;

typedef struct coreaudioVoiceOut {
    HWVoiceOut hw;
    pthread_mutex_t mutex;
    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)
{
    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,
                              void *drv_opaque)
{
    OSStatus status;
    coreaudioVoiceOut *core = (coreaudioVoiceOut *) hw;
    UInt32 propertySize;
    int err;
    const char *typ = "playback";
    AudioValueRange frameRange;
    CoreaudioConf *conf = drv_opaque;

    /* 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 (!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 (!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 CoreaudioConf glob_conf = {
    .buffer_frames = 512,
    .nbuffers = 4,
};

static void *coreaudio_audio_init (void)
{
    CoreaudioConf *conf = g_malloc(sizeof(CoreaudioConf));
    *conf = glob_conf;

    atexit(coreaudio_atexit);
    return conf;
}

static void coreaudio_audio_fini (void *opaque)
{
    g_free(opaque);
}

static struct audio_option coreaudio_options[] = {
    {
        .name  = "BUFFER_SIZE",
        .tag   = AUD_OPT_INT,
        .valp  = &glob_conf.buffer_frames,
        .descr = "Size of the buffer in frames"
    },
    {
        .name  = "BUFFER_COUNT",
        .tag   = AUD_OPT_INT,
        .valp  = &glob_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
d1f52a1d KZ	35	static int isAtexit;
	36
	37	typedef struct {
1d14ffa9	38	int buffer_frames;
e59c1139	39	int nbuffers;
d1f52a1d	40	} CoreaudioConf;
1d14ffa9 FB	41
	42	typedef struct coreaudioVoiceOut {
	43	HWVoiceOut hw;
	44	pthread_mutex_t mutex;
	45	AudioDeviceID outputDeviceID;
5e941d4b	46	UInt32 audioDevicePropertyBufferFrameSize;
1d14ffa9	47	AudioStreamBasicDescription outputStreamBasicDescription;
1d14ffa9 FB	48	int live;
	49	int decr;
	50	int rpos;
	51	} coreaudioVoiceOut;
	52
	53	static void coreaudio_logstatus (OSStatus status)
	54	{
d9cbb0f3	55	const char *str = "BUG";
1d14ffa9 FB	56
	57	switch(status) {
	58	case kAudioHardwareNoError:
	59	str = "kAudioHardwareNoError";
	60	break;
	61
	62	case kAudioHardwareNotRunningError:
	63	str = "kAudioHardwareNotRunningError";
	64	break;
	65
	66	case kAudioHardwareUnspecifiedError:
	67	str = "kAudioHardwareUnspecifiedError";
	68	break;
	69
	70	case kAudioHardwareUnknownPropertyError:
	71	str = "kAudioHardwareUnknownPropertyError";
	72	break;
	73
	74	case kAudioHardwareBadPropertySizeError:
	75	str = "kAudioHardwareBadPropertySizeError";
	76	break;
	77
	78	case kAudioHardwareIllegalOperationError:
	79	str = "kAudioHardwareIllegalOperationError";
	80	break;
	81
	82	case kAudioHardwareBadDeviceError:
	83	str = "kAudioHardwareBadDeviceError";
	84	break;
	85
	86	case kAudioHardwareBadStreamError:
	87	str = "kAudioHardwareBadStreamError";
	88	break;
	89
	90	case kAudioHardwareUnsupportedOperationError:
	91	str = "kAudioHardwareUnsupportedOperationError";
	92	break;
	93
	94	case kAudioDeviceUnsupportedFormatError:
	95	str = "kAudioDeviceUnsupportedFormatError";
	96	break;
	97
	98	case kAudioDevicePermissionsError:
	99	str = "kAudioDevicePermissionsError";
	100	break;
	101
	102	default:
744d3644	103	AUD_log (AUDIO_CAP, "Reason: status code %" PRId32 "\n", (int32_t)status);
1d14ffa9 FB	104	return;
	105	}
	106
	107	AUD_log (AUDIO_CAP, "Reason: %s\n", str);
	108	}
	109
	110	static void GCC_FMT_ATTR (2, 3) coreaudio_logerr (
	111	OSStatus status,
	112	const char *fmt,
	113	...
	114	)
	115	{
	116	va_list ap;
	117
	118	va_start (ap, fmt);
	119	AUD_log (AUDIO_CAP, fmt, ap);
	120	va_end (ap);
	121
	122	coreaudio_logstatus (status);
	123	}
	124
	125	static void GCC_FMT_ATTR (3, 4) coreaudio_logerr2 (
	126	OSStatus status,
	127	const char *typ,
	128	const char *fmt,
	129	...
	130	)
	131	{
	132	va_list ap;
	133
c0fe3827	134	AUD_log (AUDIO_CAP, "Could not initialize %s\n", typ);
1d14ffa9 FB	135
	136	va_start (ap, fmt);
	137	AUD_vlog (AUDIO_CAP, fmt, ap);
	138	va_end (ap);
	139
	140	coreaudio_logstatus (status);
	141	}
	142
5e941d4b FB	143	static inline UInt32 isPlaying (AudioDeviceID outputDeviceID)
	144	{
	145	OSStatus status;
	146	UInt32 result = 0;
	147	UInt32 propertySize = sizeof(outputDeviceID);
	148	status = AudioDeviceGetProperty(
	149	outputDeviceID, 0, 0,
	150	kAudioDevicePropertyDeviceIsRunning, &propertySize, &result);
	151	if (status != kAudioHardwareNoError) {
	152	coreaudio_logerr(status,
	153	"Could not determine whether Device is playing\n");
	154	}
	155	return result;
	156	}
	157
	158	static void coreaudio_atexit (void)
	159	{
d1f52a1d	160	isAtexit = 1;
5e941d4b FB	161	}
5e941d4b FB	162
1d14ffa9 FB	163	static int coreaudio_lock (coreaudioVoiceOut core, const char fn_name)
	164	{
	165	int err;
	166
	167	err = pthread_mutex_lock (&core->mutex);
	168	if (err) {
c0fe3827	169	dolog ("Could not lock voice for %s\nReason: %s\n",
1d14ffa9 FB	170	fn_name, strerror (err));
	171	return -1;
	172	}
	173	return 0;
	174	}
	175
	176	static int coreaudio_unlock (coreaudioVoiceOut core, const char fn_name)
	177	{
	178	int err;
	179
	180	err = pthread_mutex_unlock (&core->mutex);
	181	if (err) {
c0fe3827	182	dolog ("Could not unlock voice for %s\nReason: %s\n",
1d14ffa9 FB	183	fn_name, strerror (err));
	184	return -1;
	185	}
	186	return 0;
	187	}
	188
bdff253c	189	static int coreaudio_run_out (HWVoiceOut *hw, int live)
1d14ffa9	190	{
bdff253c	191	int decr;
1d14ffa9 FB	192	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	193
	194	if (coreaudio_lock (core, "coreaudio_run_out")) {
	195	return 0;
	196	}
	197
1d14ffa9 FB	198	if (core->decr > live) {
	199	ldebug ("core->decr %d live %d core->live %d\n",
	200	core->decr,
	201	live,
	202	core->live);
	203	}
	204
	205	decr = audio_MIN (core->decr, live);
	206	core->decr -= decr;
	207
	208	core->live = live - decr;
	209	hw->rpos = core->rpos;
	210
	211	coreaudio_unlock (core, "coreaudio_run_out");
	212	return decr;
	213	}
	214
	215	/* callback to feed audiooutput buffer */
	216	static OSStatus audioDeviceIOProc(
	217	AudioDeviceID inDevice,
	218	const AudioTimeStamp* inNow,
	219	const AudioBufferList* inInputData,
	220	const AudioTimeStamp* inInputTime,
	221	AudioBufferList* outOutputData,
	222	const AudioTimeStamp* inOutputTime,
	223	void* hwptr)
	224	{
5e941d4b	225	UInt32 frame, frameCount;
1d14ffa9 FB	226	float *out = outOutputData->mBuffers[0].mData;
	227	HWVoiceOut *hw = hwptr;
	228	coreaudioVoiceOut core = (coreaudioVoiceOut ) hwptr;
	229	int rpos, live;
1ea879e5	230	struct st_sample *src;
1d14ffa9 FB	231	#ifndef FLOAT_MIXENG
	232	#ifdef RECIPROCAL
	233	const float scale = 1.f / UINT_MAX;
	234	#else
	235	const float scale = UINT_MAX;
	236	#endif
	237	#endif
	238
	239	if (coreaudio_lock (core, "audioDeviceIOProc")) {
	240	inInputTime = 0;
	241	return 0;
	242	}
	243
5e941d4b	244	frameCount = core->audioDevicePropertyBufferFrameSize;
1d14ffa9 FB	245	live = core->live;
	246
	247	/* if there are not enough samples, set signal and return */
	248	if (live < frameCount) {
	249	inInputTime = 0;
	250	coreaudio_unlock (core, "audioDeviceIOProc(empty)");
	251	return 0;
	252	}
	253
	254	rpos = core->rpos;
	255	src = hw->mix_buf + rpos;
	256
	257	/* fill buffer */
	258	for (frame = 0; frame < frameCount; frame++) {
	259	#ifdef FLOAT_MIXENG
	260	out++ = src[frame].l; / left channel */
	261	out++ = src[frame].r; / right channel */
	262	#else
	263	#ifdef RECIPROCAL
	264	out++ = src[frame].l scale; /* left channel */
	265	out++ = src[frame].r scale; /* right channel */
	266	#else
	267	out++ = src[frame].l / scale; / left channel */
	268	out++ = src[frame].r / scale; / right channel */
	269	#endif
	270	#endif
	271	}
	272
1d14ffa9	273	rpos = (rpos + frameCount) % hw->samples;
5e941d4b	274	core->decr += frameCount;
1d14ffa9 FB	275	core->rpos = rpos;
	276
	277	coreaudio_unlock (core, "audioDeviceIOProc");
	278	return 0;
	279	}
	280
	281	static int coreaudio_write (SWVoiceOut sw, void buf, int len)
	282	{
	283	return audio_pcm_sw_write (sw, buf, len);
	284	}
	285
5706db1d KZ	286	static int coreaudio_init_out(HWVoiceOut hw, struct audsettings as,
5706db1d KZ	287	void *drv_opaque)
1d14ffa9 FB	288	{
	289	OSStatus status;
	290	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	291	UInt32 propertySize;
	292	int err;
5e941d4b FB	293	const char *typ = "playback";
5e941d4b FB	294	AudioValueRange frameRange;
d1f52a1d	295	CoreaudioConf *conf = drv_opaque;
1d14ffa9 FB	296
	297	/* create mutex */
	298	err = pthread_mutex_init(&core->mutex, NULL);
	299	if (err) {
c0fe3827	300	dolog("Could not create mutex\nReason: %s\n", strerror (err));
1d14ffa9 FB	301	return -1;
	302	}
	303
d929eba5	304	audio_pcm_init_info (&hw->info, as);
1d14ffa9 FB	305
	306	/* open default output device */
	307	propertySize = sizeof(core->outputDeviceID);
	308	status = AudioHardwareGetProperty(
	309	kAudioHardwarePropertyDefaultOutputDevice,
	310	&propertySize,
	311	&core->outputDeviceID);
	312	if (status != kAudioHardwareNoError) {
	313	coreaudio_logerr2 (status, typ,
c0fe3827	314	"Could not get default output Device\n");
1d14ffa9 FB	315	return -1;
	316	}
	317	if (core->outputDeviceID == kAudioDeviceUnknown) {
c0fe3827	318	dolog ("Could not initialize %s - Unknown Audiodevice\n", typ);
1d14ffa9 FB	319	return -1;
	320	}
	321
5e941d4b FB	322	/* get minimum and maximum buffer frame sizes */
	323	propertySize = sizeof(frameRange);
	324	status = AudioDeviceGetProperty(
	325	core->outputDeviceID,
	326	0,
	327	0,
	328	kAudioDevicePropertyBufferFrameSizeRange,
	329	&propertySize,
	330	&frameRange);
	331	if (status != kAudioHardwareNoError) {
	332	coreaudio_logerr2 (status, typ,
	333	"Could not get device buffer frame range\n");
	334	return -1;
	335	}
	336
d1f52a1d	337	if (frameRange.mMinimum > conf->buffer_frames) {
5e941d4b FB	338	core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMinimum;
	339	dolog ("warning: Upsizing Buffer Frames to %f\n", frameRange.mMinimum);
	340	}
d1f52a1d	341	else if (frameRange.mMaximum < conf->buffer_frames) {
5e941d4b FB	342	core->audioDevicePropertyBufferFrameSize = (UInt32) frameRange.mMaximum;
	343	dolog ("warning: Downsizing Buffer Frames to %f\n", frameRange.mMaximum);
	344	}
	345	else {
d1f52a1d	346	core->audioDevicePropertyBufferFrameSize = conf->buffer_frames;
5e941d4b FB	347	}
	348
	349	/* set Buffer Frame Size */
	350	propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	351	status = AudioDeviceSetProperty(
	352	core->outputDeviceID,
	353	NULL,
	354	0,
	355	false,
5e941d4b	356	kAudioDevicePropertyBufferFrameSize,
1d14ffa9	357	propertySize,
5e941d4b	358	&core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	359	if (status != kAudioHardwareNoError) {
1d14ffa9 FB	360	coreaudio_logerr2 (status, typ,
cbc36cb0 AF	361	"Could not set device buffer frame size %" PRIu32 "\n",
cbc36cb0 AF	362	(uint32_t)core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	363	return -1;
	364	}
	365
5e941d4b FB	366	/* get Buffer Frame Size */
5e941d4b FB	367	propertySize = sizeof(core->audioDevicePropertyBufferFrameSize);
1d14ffa9 FB	368	status = AudioDeviceGetProperty(
	369	core->outputDeviceID,
	370	0,
	371	false,
5e941d4b	372	kAudioDevicePropertyBufferFrameSize,
1d14ffa9	373	&propertySize,
5e941d4b	374	&core->audioDevicePropertyBufferFrameSize);
1d14ffa9	375	if (status != kAudioHardwareNoError) {
5e941d4b FB	376	coreaudio_logerr2 (status, typ,
5e941d4b FB	377	"Could not get device buffer frame size\n");
1d14ffa9 FB	378	return -1;
1d14ffa9 FB	379	}
d1f52a1d	380	hw->samples = conf->nbuffers * core->audioDevicePropertyBufferFrameSize;
1d14ffa9 FB	381
	382	/* get StreamFormat */
	383	propertySize = sizeof(core->outputStreamBasicDescription);
	384	status = AudioDeviceGetProperty(
	385	core->outputDeviceID,
	386	0,
	387	false,
	388	kAudioDevicePropertyStreamFormat,
	389	&propertySize,
	390	&core->outputStreamBasicDescription);
	391	if (status != kAudioHardwareNoError) {
	392	coreaudio_logerr2 (status, typ,
c0fe3827	393	"Could not get Device Stream properties\n");
1d14ffa9 FB	394	core->outputDeviceID = kAudioDeviceUnknown;
	395	return -1;
	396	}
	397
	398	/* set Samplerate */
5e941d4b	399	core->outputStreamBasicDescription.mSampleRate = (Float64) as->freq;
1d14ffa9 FB	400	propertySize = sizeof(core->outputStreamBasicDescription);
	401	status = AudioDeviceSetProperty(
	402	core->outputDeviceID,
	403	0,
	404	0,
	405	0,
	406	kAudioDevicePropertyStreamFormat,
	407	propertySize,
	408	&core->outputStreamBasicDescription);
	409	if (status != kAudioHardwareNoError) {
575b5dc4 FB	410	coreaudio_logerr2 (status, typ, "Could not set samplerate %d\n",
575b5dc4 FB	411	as->freq);
1d14ffa9 FB	412	core->outputDeviceID = kAudioDeviceUnknown;
	413	return -1;
	414	}
	415
	416	/* set Callback */
	417	status = AudioDeviceAddIOProc(core->outputDeviceID, audioDeviceIOProc, hw);
	418	if (status != kAudioHardwareNoError) {
c0fe3827	419	coreaudio_logerr2 (status, typ, "Could not set IOProc\n");
1d14ffa9 FB	420	core->outputDeviceID = kAudioDeviceUnknown;
	421	return -1;
	422	}
	423
	424	/* start Playback */
5e941d4b	425	if (!isPlaying(core->outputDeviceID)) {
1d14ffa9 FB	426	status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
1d14ffa9 FB	427	if (status != kAudioHardwareNoError) {
c0fe3827	428	coreaudio_logerr2 (status, typ, "Could not start playback\n");
1d14ffa9 FB	429	AudioDeviceRemoveIOProc(core->outputDeviceID, audioDeviceIOProc);
	430	core->outputDeviceID = kAudioDeviceUnknown;
	431	return -1;
	432	}
1d14ffa9 FB	433	}
	434
	435	return 0;
	436	}
	437
	438	static void coreaudio_fini_out (HWVoiceOut *hw)
	439	{
	440	OSStatus status;
	441	int err;
	442	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	443
d1f52a1d	444	if (!isAtexit) {
5e941d4b FB	445	/* stop playback */
	446	if (isPlaying(core->outputDeviceID)) {
	447	status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
	448	if (status != kAudioHardwareNoError) {
	449	coreaudio_logerr (status, "Could not stop playback\n");
	450	}
1d14ffa9	451	}
1d14ffa9	452
5e941d4b FB	453	/* remove callback */
	454	status = AudioDeviceRemoveIOProc(core->outputDeviceID,
	455	audioDeviceIOProc);
	456	if (status != kAudioHardwareNoError) {
	457	coreaudio_logerr (status, "Could not remove IOProc\n");
	458	}
1d14ffa9 FB	459	}
	460	core->outputDeviceID = kAudioDeviceUnknown;
	461
	462	/* destroy mutex */
	463	err = pthread_mutex_destroy(&core->mutex);
	464	if (err) {
c0fe3827	465	dolog("Could not destroy mutex\nReason: %s\n", strerror (err));
1d14ffa9 FB	466	}
	467	}
	468
	469	static int coreaudio_ctl_out (HWVoiceOut *hw, int cmd, ...)
	470	{
	471	OSStatus status;
	472	coreaudioVoiceOut core = (coreaudioVoiceOut ) hw;
	473
	474	switch (cmd) {
	475	case VOICE_ENABLE:
	476	/* start playback */
5e941d4b	477	if (!isPlaying(core->outputDeviceID)) {
1d14ffa9 FB	478	status = AudioDeviceStart(core->outputDeviceID, audioDeviceIOProc);
1d14ffa9 FB	479	if (status != kAudioHardwareNoError) {
5e941d4b	480	coreaudio_logerr (status, "Could not resume playback\n");
1d14ffa9	481	}
1d14ffa9 FB	482	}
	483	break;
	484
	485	case VOICE_DISABLE:
	486	/* stop playback */
d1f52a1d	487	if (!isAtexit) {
5e941d4b FB	488	if (isPlaying(core->outputDeviceID)) {
	489	status = AudioDeviceStop(core->outputDeviceID, audioDeviceIOProc);
	490	if (status != kAudioHardwareNoError) {
	491	coreaudio_logerr (status, "Could not pause playback\n");
	492	}
1d14ffa9	493	}
1d14ffa9 FB	494	}
	495	break;
	496	}
	497	return 0;
	498	}
	499
d1f52a1d KZ	500	static CoreaudioConf glob_conf = {
	501	.buffer_frames = 512,
	502	.nbuffers = 4,
	503	};
	504
1d14ffa9 FB	505	static void *coreaudio_audio_init (void)
1d14ffa9 FB	506	{
d1f52a1d KZ	507	CoreaudioConf *conf = g_malloc(sizeof(CoreaudioConf));
	508	*conf = glob_conf;
	509
5e941d4b	510	atexit(coreaudio_atexit);
d1f52a1d	511	return conf;
1d14ffa9 FB	512	}
	513
	514	static void coreaudio_audio_fini (void *opaque)
	515	{
d1f52a1d	516	g_free(opaque);
1d14ffa9 FB	517	}
	518
	519	static struct audio_option coreaudio_options[] = {
98f9f48c	520	{
	521	.name = "BUFFER_SIZE",
	522	.tag = AUD_OPT_INT,
d1f52a1d	523	.valp = &glob_conf.buffer_frames,
98f9f48c	524	.descr = "Size of the buffer in frames"
	525	},
	526	{
	527	.name = "BUFFER_COUNT",
	528	.tag = AUD_OPT_INT,
d1f52a1d	529	.valp = &glob_conf.nbuffers,
98f9f48c	530	.descr = "Number of buffers"
98f9f48c	531	},
2700efa3	532	{ /* End of list */ }
1d14ffa9 FB	533	};
1d14ffa9 FB	534
35f4b58c	535	static struct audio_pcm_ops coreaudio_pcm_ops = {
1dd3e4d1 JQ	536	.init_out = coreaudio_init_out,
	537	.fini_out = coreaudio_fini_out,
	538	.run_out = coreaudio_run_out,
	539	.write = coreaudio_write,
	540	.ctl_out = coreaudio_ctl_out
1d14ffa9 FB	541	};
	542
	543	struct audio_driver coreaudio_audio_driver = {
bee37f32 JQ	544	.name = "coreaudio",
	545	.descr = "CoreAudio http://developer.apple.com/audio/coreaudio.html",
	546	.options = coreaudio_options,
	547	.init = coreaudio_audio_init,
	548	.fini = coreaudio_audio_fini,
	549	.pcm_ops = &coreaudio_pcm_ops,
	550	.can_be_default = 1,
	551	.max_voices_out = 1,
	552	.max_voices_in = 0,
	553	.voice_size_out = sizeof (coreaudioVoiceOut),
	554	.voice_size_in = 0
1d14ffa9	555	};