[qemu.git] / audio / paaudio.c

/* public domain */
#include "qemu-common.h"
#include "audio.h"

#include <pulse/simple.h>
#include <pulse/error.h>

#define AUDIO_CAP "pulseaudio"
#include "audio_int.h"
#include "audio_pt_int.h"

typedef struct {
    HWVoiceOut hw;
    int done;
    int live;
    int decr;
    int rpos;
    pa_simple *s;
    void *pcm_buf;
    struct audio_pt pt;
} PAVoiceOut;

typedef struct {
    HWVoiceIn hw;
    int done;
    int dead;
    int incr;
    int wpos;
    pa_simple *s;
    void *pcm_buf;
    struct audio_pt pt;
} PAVoiceIn;

static struct {
    int samples;
    int divisor;
    char *server;
    char *sink;
    char *source;
} conf = {
    .samples = 1024,
    .divisor = 2,
};

static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...)
{
    va_list ap;

    va_start (ap, fmt);
    AUD_vlog (AUDIO_CAP, fmt, ap);
    va_end (ap);

    AUD_log (AUDIO_CAP, "Reason: %s\n", pa_strerror (err));
}

static void *qpa_thread_out (void *arg)
{
    PAVoiceOut *pa = arg;
    HWVoiceOut *hw = &pa->hw;
    int threshold;

    threshold = conf.divisor ? hw->samples / conf.divisor : 0;

    if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
        return NULL;
    }

    for (;;) {
        int decr, to_mix, rpos;

        for (;;) {
            if (pa->done) {
                goto exit;
            }

            if (pa->live > threshold) {
                break;
            }

            if (audio_pt_wait (&pa->pt, AUDIO_FUNC)) {
                goto exit;
            }
        }

        decr = to_mix = pa->live;
        rpos = hw->rpos;

        if (audio_pt_unlock (&pa->pt, AUDIO_FUNC)) {
            return NULL;
        }

        while (to_mix) {
            int error;
            int chunk = audio_MIN (to_mix, hw->samples - rpos);
            struct st_sample *src = hw->mix_buf + rpos;

            hw->clip (pa->pcm_buf, src, chunk);

            if (pa_simple_write (pa->s, pa->pcm_buf,
                                 chunk << hw->info.shift, &error) < 0) {
                qpa_logerr (error, "pa_simple_write failed\n");
                return NULL;
            }

            rpos = (rpos + chunk) % hw->samples;
            to_mix -= chunk;
        }

        if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
            return NULL;
        }

        pa->rpos = rpos;
        pa->live -= decr;
        pa->decr += decr;
    }

 exit:
    audio_pt_unlock (&pa->pt, AUDIO_FUNC);
    return NULL;
}

static int qpa_run_out (HWVoiceOut *hw, int live)
{
    int decr;
    PAVoiceOut *pa = (PAVoiceOut *) hw;

    if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
        return 0;
    }

    decr = audio_MIN (live, pa->decr);
    pa->decr -= decr;
    pa->live = live - decr;
    hw->rpos = pa->rpos;
    if (pa->live > 0) {
        audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
    }
    else {
        audio_pt_unlock (&pa->pt, AUDIO_FUNC);
    }
    return decr;
}

static int qpa_write (SWVoiceOut *sw, void *buf, int len)
{
    return audio_pcm_sw_write (sw, buf, len);
}

/* capture */
static void *qpa_thread_in (void *arg)
{
    PAVoiceIn *pa = arg;
    HWVoiceIn *hw = &pa->hw;
    int threshold;

    threshold = conf.divisor ? hw->samples / conf.divisor : 0;

    if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
        return NULL;
    }

    for (;;) {
        int incr, to_grab, wpos;

        for (;;) {
            if (pa->done) {
                goto exit;
            }

            if (pa->dead > threshold) {
                break;
            }

            if (audio_pt_wait (&pa->pt, AUDIO_FUNC)) {
                goto exit;
            }
        }

        incr = to_grab = pa->dead;
        wpos = hw->wpos;

        if (audio_pt_unlock (&pa->pt, AUDIO_FUNC)) {
            return NULL;
        }

        while (to_grab) {
            int error;
            int chunk = audio_MIN (to_grab, hw->samples - wpos);
            void *buf = advance (pa->pcm_buf, wpos);

            if (pa_simple_read (pa->s, buf,
                                chunk << hw->info.shift, &error) < 0) {
                qpa_logerr (error, "pa_simple_read failed\n");
                return NULL;
            }

            hw->conv (hw->conv_buf + wpos, buf, chunk, &nominal_volume);
            wpos = (wpos + chunk) % hw->samples;
            to_grab -= chunk;
        }

        if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
            return NULL;
        }

        pa->wpos = wpos;
        pa->dead -= incr;
        pa->incr += incr;
    }

 exit:
    audio_pt_unlock (&pa->pt, AUDIO_FUNC);
    return NULL;
}

static int qpa_run_in (HWVoiceIn *hw)
{
    int live, incr, dead;
    PAVoiceIn *pa = (PAVoiceIn *) hw;

    if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
        return 0;
    }

    live = audio_pcm_hw_get_live_in (hw);
    dead = hw->samples - live;
    incr = audio_MIN (dead, pa->incr);
    pa->incr -= incr;
    pa->dead = dead - incr;
    hw->wpos = pa->wpos;
    if (pa->dead > 0) {
        audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
    }
    else {
        audio_pt_unlock (&pa->pt, AUDIO_FUNC);
    }
    return incr;
}

static int qpa_read (SWVoiceIn *sw, void *buf, int len)
{
    return audio_pcm_sw_read (sw, buf, len);
}

static pa_sample_format_t audfmt_to_pa (audfmt_e afmt, int endianness)
{
    int format;

    switch (afmt) {
    case AUD_FMT_S8:
    case AUD_FMT_U8:
        format = PA_SAMPLE_U8;
        break;
    case AUD_FMT_S16:
    case AUD_FMT_U16:
        format = endianness ? PA_SAMPLE_S16BE : PA_SAMPLE_S16LE;
        break;
    case AUD_FMT_S32:
    case AUD_FMT_U32:
        format = endianness ? PA_SAMPLE_S32BE : PA_SAMPLE_S32LE;
        break;
    default:
        dolog ("Internal logic error: Bad audio format %d\n", afmt);
        format = PA_SAMPLE_U8;
        break;
    }
    return format;
}

static audfmt_e pa_to_audfmt (pa_sample_format_t fmt, int *endianness)
{
    switch (fmt) {
    case PA_SAMPLE_U8:
        return AUD_FMT_U8;
    case PA_SAMPLE_S16BE:
        *endianness = 1;
        return AUD_FMT_S16;
    case PA_SAMPLE_S16LE:
        *endianness = 0;
        return AUD_FMT_S16;
    case PA_SAMPLE_S32BE:
        *endianness = 1;
        return AUD_FMT_S32;
    case PA_SAMPLE_S32LE:
        *endianness = 0;
        return AUD_FMT_S32;
    default:
        dolog ("Internal logic error: Bad pa_sample_format %d\n", fmt);
        return AUD_FMT_U8;
    }
}

static int qpa_init_out (HWVoiceOut *hw, struct audsettings *as)
{
    int error;
    static pa_sample_spec ss;
    struct audsettings obt_as = *as;
    PAVoiceOut *pa = (PAVoiceOut *) hw;

    ss.format = audfmt_to_pa (as->fmt, as->endianness);
    ss.channels = as->nchannels;
    ss.rate = as->freq;

    obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);

    pa->s = pa_simple_new (
        conf.server,
        "qemu",
        PA_STREAM_PLAYBACK,
        conf.sink,
        "pcm.playback",
        &ss,
        NULL,                   /* channel map */
        NULL,                   /* buffering attributes */
        &error
        );
    if (!pa->s) {
        qpa_logerr (error, "pa_simple_new for playback failed\n");
        goto fail1;
    }

    audio_pcm_init_info (&hw->info, &obt_as);
    hw->samples = conf.samples;
    pa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
    if (!pa->pcm_buf) {
        dolog ("Could not allocate buffer (%d bytes)\n",
               hw->samples << hw->info.shift);
        goto fail2;
    }

    if (audio_pt_init (&pa->pt, qpa_thread_out, hw, AUDIO_CAP, AUDIO_FUNC)) {
        goto fail3;
    }

    return 0;

 fail3:
    qemu_free (pa->pcm_buf);
    pa->pcm_buf = NULL;
 fail2:
    pa_simple_free (pa->s);
    pa->s = NULL;
 fail1:
    return -1;
}

static int qpa_init_in (HWVoiceIn *hw, struct audsettings *as)
{
    int error;
    static pa_sample_spec ss;
    struct audsettings obt_as = *as;
    PAVoiceIn *pa = (PAVoiceIn *) hw;

    ss.format = audfmt_to_pa (as->fmt, as->endianness);
    ss.channels = as->nchannels;
    ss.rate = as->freq;

    obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);

    pa->s = pa_simple_new (
        conf.server,
        "qemu",
        PA_STREAM_RECORD,
        conf.source,
        "pcm.capture",
        &ss,
        NULL,                   /* channel map */
        NULL,                   /* buffering attributes */
        &error
        );
    if (!pa->s) {
        qpa_logerr (error, "pa_simple_new for capture failed\n");
        goto fail1;
    }

    audio_pcm_init_info (&hw->info, &obt_as);
    hw->samples = conf.samples;
    pa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
    if (!pa->pcm_buf) {
        dolog ("Could not allocate buffer (%d bytes)\n",
               hw->samples << hw->info.shift);
        goto fail2;
    }

    if (audio_pt_init (&pa->pt, qpa_thread_in, hw, AUDIO_CAP, AUDIO_FUNC)) {
        goto fail3;
    }

    return 0;

 fail3:
    qemu_free (pa->pcm_buf);
    pa->pcm_buf = NULL;
 fail2:
    pa_simple_free (pa->s);
    pa->s = NULL;
 fail1:
    return -1;
}

static void qpa_fini_out (HWVoiceOut *hw)
{
    void *ret;
    PAVoiceOut *pa = (PAVoiceOut *) hw;

    audio_pt_lock (&pa->pt, AUDIO_FUNC);
    pa->done = 1;
    audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
    audio_pt_join (&pa->pt, &ret, AUDIO_FUNC);

    if (pa->s) {
        pa_simple_free (pa->s);
        pa->s = NULL;
    }

    audio_pt_fini (&pa->pt, AUDIO_FUNC);
    qemu_free (pa->pcm_buf);
    pa->pcm_buf = NULL;
}

static void qpa_fini_in (HWVoiceIn *hw)
{
    void *ret;
    PAVoiceIn *pa = (PAVoiceIn *) hw;

    audio_pt_lock (&pa->pt, AUDIO_FUNC);
    pa->done = 1;
    audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
    audio_pt_join (&pa->pt, &ret, AUDIO_FUNC);

    if (pa->s) {
        pa_simple_free (pa->s);
        pa->s = NULL;
    }

    audio_pt_fini (&pa->pt, AUDIO_FUNC);
    qemu_free (pa->pcm_buf);
    pa->pcm_buf = NULL;
}

static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
    (void) hw;
    (void) cmd;
    return 0;
}

static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...)
{
    (void) hw;
    (void) cmd;
    return 0;
}

/* common */
static void *qpa_audio_init (void)
{
    return &conf;
}

static void qpa_audio_fini (void *opaque)
{
    (void) opaque;
}

struct audio_option qpa_options[] = {
    {
        .name  = "SAMPLES",
        .tag   = AUD_OPT_INT,
        .valp  = &conf.samples,
        .descr = "buffer size in samples"
    },
    {
        .name  = "DIVISOR",
        .tag   = AUD_OPT_INT,
        .valp  = &conf.divisor,
        .descr = "threshold divisor"
    },
    {
        .name  = "SERVER",
        .tag   = AUD_OPT_STR,
        .valp  = &conf.server,
        .descr = "server address"
    },
    {
        .name  = "SINK",
        .tag   = AUD_OPT_STR,
        .valp  = &conf.sink,
        .descr = "sink device name"
    },
    {
        .name  = "SOURCE",
        .tag   = AUD_OPT_STR,
        .valp  = &conf.source,
        .descr = "source device name"
    },
    { /* End of list */ }
};

static struct audio_pcm_ops qpa_pcm_ops = {
    .init_out = qpa_init_out,
    .fini_out = qpa_fini_out,
    .run_out  = qpa_run_out,
    .write    = qpa_write,
    .ctl_out  = qpa_ctl_out,

    .init_in  = qpa_init_in,
    .fini_in  = qpa_fini_in,
    .run_in   = qpa_run_in,
    .read     = qpa_read,
    .ctl_in   = qpa_ctl_in
};

struct audio_driver pa_audio_driver = {
    .name           = "pa",
    .descr          = "http://www.pulseaudio.org/",
    .options        = qpa_options,
    .init           = qpa_audio_init,
    .fini           = qpa_audio_fini,
    .pcm_ops        = &qpa_pcm_ops,
    .can_be_default = 1,
    .max_voices_out = INT_MAX,
    .max_voices_in  = INT_MAX,
    .voice_size_out = sizeof (PAVoiceOut),
    .voice_size_in  = sizeof (PAVoiceIn)
};
Commit	Line	Data
b8e59f18	1	/* public domain */
	2	#include "qemu-common.h"
	3	#include "audio.h"
	4
	5	#include <pulse/simple.h>
	6	#include <pulse/error.h>
	7
	8	#define AUDIO_CAP "pulseaudio"
	9	#include "audio_int.h"
	10	#include "audio_pt_int.h"
	11
	12	typedef struct {
	13	HWVoiceOut hw;
	14	int done;
	15	int live;
	16	int decr;
	17	int rpos;
	18	pa_simple *s;
	19	void *pcm_buf;
	20	struct audio_pt pt;
	21	} PAVoiceOut;
	22
	23	typedef struct {
	24	HWVoiceIn hw;
	25	int done;
	26	int dead;
	27	int incr;
	28	int wpos;
	29	pa_simple *s;
	30	void *pcm_buf;
	31	struct audio_pt pt;
	32	} PAVoiceIn;
	33
	34	static struct {
	35	int samples;
	36	int divisor;
	37	char *server;
	38	char *sink;
	39	char *source;
	40	} conf = {
1a40d5e2 JQ	41	.samples = 1024,
1a40d5e2 JQ	42	.divisor = 2,
b8e59f18	43	};
	44
	45	static void GCC_FMT_ATTR (2, 3) qpa_logerr (int err, const char *fmt, ...)
	46	{
	47	va_list ap;
	48
	49	va_start (ap, fmt);
	50	AUD_vlog (AUDIO_CAP, fmt, ap);
	51	va_end (ap);
	52
	53	AUD_log (AUDIO_CAP, "Reason: %s\n", pa_strerror (err));
	54	}
	55
	56	static void qpa_thread_out (void arg)
	57	{
	58	PAVoiceOut *pa = arg;
	59	HWVoiceOut *hw = &pa->hw;
	60	int threshold;
	61
	62	threshold = conf.divisor ? hw->samples / conf.divisor : 0;
	63
	64	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
	65	return NULL;
	66	}
	67
	68	for (;;) {
	69	int decr, to_mix, rpos;
	70
	71	for (;;) {
	72	if (pa->done) {
	73	goto exit;
	74	}
	75
	76	if (pa->live > threshold) {
	77	break;
	78	}
	79
	80	if (audio_pt_wait (&pa->pt, AUDIO_FUNC)) {
	81	goto exit;
	82	}
	83	}
	84
	85	decr = to_mix = pa->live;
	86	rpos = hw->rpos;
	87
	88	if (audio_pt_unlock (&pa->pt, AUDIO_FUNC)) {
	89	return NULL;
	90	}
	91
	92	while (to_mix) {
	93	int error;
	94	int chunk = audio_MIN (to_mix, hw->samples - rpos);
1ea879e5	95	struct st_sample *src = hw->mix_buf + rpos;
b8e59f18	96
	97	hw->clip (pa->pcm_buf, src, chunk);
	98
	99	if (pa_simple_write (pa->s, pa->pcm_buf,
	100	chunk << hw->info.shift, &error) < 0) {
	101	qpa_logerr (error, "pa_simple_write failed\n");
	102	return NULL;
	103	}
	104
	105	rpos = (rpos + chunk) % hw->samples;
	106	to_mix -= chunk;
	107	}
	108
	109	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
	110	return NULL;
	111	}
	112
	113	pa->rpos = rpos;
	114	pa->live -= decr;
	115	pa->decr += decr;
	116	}
	117
	118	exit:
	119	audio_pt_unlock (&pa->pt, AUDIO_FUNC);
	120	return NULL;
	121	}
	122
bdff253c	123	static int qpa_run_out (HWVoiceOut *hw, int live)
b8e59f18	124	{
bdff253c	125	int decr;
b8e59f18	126	PAVoiceOut pa = (PAVoiceOut ) hw;
	127
	128	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
	129	return 0;
	130	}
	131
b8e59f18	132	decr = audio_MIN (live, pa->decr);
	133	pa->decr -= decr;
	134	pa->live = live - decr;
	135	hw->rpos = pa->rpos;
	136	if (pa->live > 0) {
	137	audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
	138	}
	139	else {
	140	audio_pt_unlock (&pa->pt, AUDIO_FUNC);
	141	}
	142	return decr;
	143	}
	144
	145	static int qpa_write (SWVoiceOut sw, void buf, int len)
	146	{
	147	return audio_pcm_sw_write (sw, buf, len);
	148	}
	149
	150	/* capture */
	151	static void qpa_thread_in (void arg)
	152	{
	153	PAVoiceIn *pa = arg;
	154	HWVoiceIn *hw = &pa->hw;
	155	int threshold;
	156
	157	threshold = conf.divisor ? hw->samples / conf.divisor : 0;
	158
	159	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
	160	return NULL;
	161	}
	162
	163	for (;;) {
	164	int incr, to_grab, wpos;
	165
	166	for (;;) {
	167	if (pa->done) {
	168	goto exit;
	169	}
	170
	171	if (pa->dead > threshold) {
	172	break;
	173	}
	174
	175	if (audio_pt_wait (&pa->pt, AUDIO_FUNC)) {
	176	goto exit;
	177	}
	178	}
	179
	180	incr = to_grab = pa->dead;
	181	wpos = hw->wpos;
	182
	183	if (audio_pt_unlock (&pa->pt, AUDIO_FUNC)) {
	184	return NULL;
	185	}
	186
	187	while (to_grab) {
	188	int error;
	189	int chunk = audio_MIN (to_grab, hw->samples - wpos);
	190	void *buf = advance (pa->pcm_buf, wpos);
	191
	192	if (pa_simple_read (pa->s, buf,
	193	chunk << hw->info.shift, &error) < 0) {
	194	qpa_logerr (error, "pa_simple_read failed\n");
	195	return NULL;
196	}
197
198	hw->conv (hw->conv_buf + wpos, buf, chunk, &nominal_volume);
199	wpos = (wpos + chunk) % hw->samples;
200	to_grab -= chunk;
201	}
202
203	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
204	return NULL;
205	}
206
207	pa->wpos = wpos;
208	pa->dead -= incr;
209	pa->incr += incr;
210	}
211
212	exit:
213	audio_pt_unlock (&pa->pt, AUDIO_FUNC);
214	return NULL;
215	}
216
217	static int qpa_run_in (HWVoiceIn *hw)
218	{
219	int live, incr, dead;
220	PAVoiceIn pa = (PAVoiceIn ) hw;
221
222	if (audio_pt_lock (&pa->pt, AUDIO_FUNC)) {
223	return 0;
224	}
225
226	live = audio_pcm_hw_get_live_in (hw);
227	dead = hw->samples - live;
228	incr = audio_MIN (dead, pa->incr);
229	pa->incr -= incr;
230	pa->dead = dead - incr;
231	hw->wpos = pa->wpos;
232	if (pa->dead > 0) {
233	audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
234	}
235	else {
236	audio_pt_unlock (&pa->pt, AUDIO_FUNC);
237	}
238	return incr;
239	}
240
241	static int qpa_read (SWVoiceIn sw, void buf, int len)
242	{
243	return audio_pcm_sw_read (sw, buf, len);
244	}
245
246	static pa_sample_format_t audfmt_to_pa (audfmt_e afmt, int endianness)
247	{
248	int format;
249
250	switch (afmt) {
251	case AUD_FMT_S8:
252	case AUD_FMT_U8:
253	format = PA_SAMPLE_U8;
254	break;
255	case AUD_FMT_S16:
256	case AUD_FMT_U16:
257	format = endianness ? PA_SAMPLE_S16BE : PA_SAMPLE_S16LE;
258	break;
259	case AUD_FMT_S32:
260	case AUD_FMT_U32:
261	format = endianness ? PA_SAMPLE_S32BE : PA_SAMPLE_S32LE;
262	break;
263	default:
264	dolog ("Internal logic error: Bad audio format %d\n", afmt);
265	format = PA_SAMPLE_U8;
266	break;
267	}
268	return format;
269	}
270
271	static audfmt_e pa_to_audfmt (pa_sample_format_t fmt, int *endianness)
272	{
273	switch (fmt) {
274	case PA_SAMPLE_U8:
275	return AUD_FMT_U8;
276	case PA_SAMPLE_S16BE:
277	*endianness = 1;
278	return AUD_FMT_S16;
279	case PA_SAMPLE_S16LE:
280	*endianness = 0;
281	return AUD_FMT_S16;
282	case PA_SAMPLE_S32BE:
283	*endianness = 1;
284	return AUD_FMT_S32;
285	case PA_SAMPLE_S32LE:
286	*endianness = 0;
287	return AUD_FMT_S32;
288	default:
289	dolog ("Internal logic error: Bad pa_sample_format %d\n", fmt);
290	return AUD_FMT_U8;
291	}
292	}
293
1ea879e5	294	static int qpa_init_out (HWVoiceOut hw, struct audsettings as)
b8e59f18	295	{
	296	int error;
	297	static pa_sample_spec ss;
1ea879e5	298	struct audsettings obt_as = *as;
b8e59f18	299	PAVoiceOut pa = (PAVoiceOut ) hw;
	300
	301	ss.format = audfmt_to_pa (as->fmt, as->endianness);
	302	ss.channels = as->nchannels;
	303	ss.rate = as->freq;
	304
	305	obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
	306
	307	pa->s = pa_simple_new (
	308	conf.server,
	309	"qemu",
	310	PA_STREAM_PLAYBACK,
	311	conf.sink,
	312	"pcm.playback",
	313	&ss,
	314	NULL, /* channel map */
	315	NULL, /* buffering attributes */
	316	&error
	317	);
	318	if (!pa->s) {
	319	qpa_logerr (error, "pa_simple_new for playback failed\n");
	320	goto fail1;
	321	}
	322
	323	audio_pcm_init_info (&hw->info, &obt_as);
	324	hw->samples = conf.samples;
	325	pa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
	326	if (!pa->pcm_buf) {
	327	dolog ("Could not allocate buffer (%d bytes)\n",
	328	hw->samples << hw->info.shift);
	329	goto fail2;
	330	}
	331
	332	if (audio_pt_init (&pa->pt, qpa_thread_out, hw, AUDIO_CAP, AUDIO_FUNC)) {
	333	goto fail3;
	334	}
	335
	336	return 0;
	337
	338	fail3:
5d928867	339	qemu_free (pa->pcm_buf);
b8e59f18	340	pa->pcm_buf = NULL;
	341	fail2:
	342	pa_simple_free (pa->s);
	343	pa->s = NULL;
	344	fail1:
	345	return -1;
	346	}
	347
1ea879e5	348	static int qpa_init_in (HWVoiceIn hw, struct audsettings as)
b8e59f18	349	{
	350	int error;
	351	static pa_sample_spec ss;
1ea879e5	352	struct audsettings obt_as = *as;
b8e59f18	353	PAVoiceIn pa = (PAVoiceIn ) hw;
	354
	355	ss.format = audfmt_to_pa (as->fmt, as->endianness);
	356	ss.channels = as->nchannels;
	357	ss.rate = as->freq;
	358
	359	obt_as.fmt = pa_to_audfmt (ss.format, &obt_as.endianness);
	360
	361	pa->s = pa_simple_new (
	362	conf.server,
	363	"qemu",
	364	PA_STREAM_RECORD,
	365	conf.source,
	366	"pcm.capture",
	367	&ss,
	368	NULL, /* channel map */
	369	NULL, /* buffering attributes */
	370	&error
	371	);
	372	if (!pa->s) {
	373	qpa_logerr (error, "pa_simple_new for capture failed\n");
	374	goto fail1;
	375	}
	376
	377	audio_pcm_init_info (&hw->info, &obt_as);
	378	hw->samples = conf.samples;
	379	pa->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
	380	if (!pa->pcm_buf) {
	381	dolog ("Could not allocate buffer (%d bytes)\n",
	382	hw->samples << hw->info.shift);
	383	goto fail2;
	384	}
	385
	386	if (audio_pt_init (&pa->pt, qpa_thread_in, hw, AUDIO_CAP, AUDIO_FUNC)) {
	387	goto fail3;
	388	}
	389
	390	return 0;
	391
	392	fail3:
5d928867	393	qemu_free (pa->pcm_buf);
b8e59f18	394	pa->pcm_buf = NULL;
	395	fail2:
	396	pa_simple_free (pa->s);
	397	pa->s = NULL;
	398	fail1:
	399	return -1;
	400	}
	401
	402	static void qpa_fini_out (HWVoiceOut *hw)
	403	{
	404	void *ret;
	405	PAVoiceOut pa = (PAVoiceOut ) hw;
	406
	407	audio_pt_lock (&pa->pt, AUDIO_FUNC);
	408	pa->done = 1;
	409	audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
	410	audio_pt_join (&pa->pt, &ret, AUDIO_FUNC);
	411
	412	if (pa->s) {
	413	pa_simple_free (pa->s);
	414	pa->s = NULL;
	415	}
	416
	417	audio_pt_fini (&pa->pt, AUDIO_FUNC);
	418	qemu_free (pa->pcm_buf);
	419	pa->pcm_buf = NULL;
	420	}
	421
	422	static void qpa_fini_in (HWVoiceIn *hw)
	423	{
	424	void *ret;
	425	PAVoiceIn pa = (PAVoiceIn ) hw;
	426
	427	audio_pt_lock (&pa->pt, AUDIO_FUNC);
	428	pa->done = 1;
	429	audio_pt_unlock_and_signal (&pa->pt, AUDIO_FUNC);
	430	audio_pt_join (&pa->pt, &ret, AUDIO_FUNC);
	431
	432	if (pa->s) {
	433	pa_simple_free (pa->s);
	434	pa->s = NULL;
	435	}
	436
	437	audio_pt_fini (&pa->pt, AUDIO_FUNC);
	438	qemu_free (pa->pcm_buf);
	439	pa->pcm_buf = NULL;
	440	}
	441
	442	static int qpa_ctl_out (HWVoiceOut *hw, int cmd, ...)
	443	{
	444	(void) hw;
	445	(void) cmd;
	446	return 0;
	447	}
	448
	449	static int qpa_ctl_in (HWVoiceIn *hw, int cmd, ...)
	450	{
	451	(void) hw;
	452	(void) cmd;
	453	return 0;
	454	}
	455
	456	/* common */
	457	static void *qpa_audio_init (void)
458	{
459	return &conf;
460	}
461
462	static void qpa_audio_fini (void *opaque)
463	{
464	(void) opaque;
465	}
466
467	struct audio_option qpa_options[] = {
98f9f48c	468	{
	469	.name = "SAMPLES",
	470	.tag = AUD_OPT_INT,
	471	.valp = &conf.samples,
	472	.descr = "buffer size in samples"
	473	},
	474	{
	475	.name = "DIVISOR",
	476	.tag = AUD_OPT_INT,
	477	.valp = &conf.divisor,
	478	.descr = "threshold divisor"
	479	},
	480	{
	481	.name = "SERVER",
	482	.tag = AUD_OPT_STR,
	483	.valp = &conf.server,
	484	.descr = "server address"
	485	},
	486	{
	487	.name = "SINK",
	488	.tag = AUD_OPT_STR,
	489	.valp = &conf.sink,
	490	.descr = "sink device name"
	491	},
	492	{
	493	.name = "SOURCE",
	494	.tag = AUD_OPT_STR,
	495	.valp = &conf.source,
	496	.descr = "source device name"
	497	},
2700efa3	498	{ /* End of list */ }
b8e59f18	499	};
b8e59f18	500
35f4b58c	501	static struct audio_pcm_ops qpa_pcm_ops = {
1dd3e4d1 JQ	502	.init_out = qpa_init_out,
	503	.fini_out = qpa_fini_out,
	504	.run_out = qpa_run_out,
	505	.write = qpa_write,
	506	.ctl_out = qpa_ctl_out,
	507
	508	.init_in = qpa_init_in,
	509	.fini_in = qpa_fini_in,
	510	.run_in = qpa_run_in,
	511	.read = qpa_read,
	512	.ctl_in = qpa_ctl_in
b8e59f18	513	};
	514
	515	struct audio_driver pa_audio_driver = {
bee37f32 JQ	516	.name = "pa",
	517	.descr = "http://www.pulseaudio.org/",
	518	.options = qpa_options,
	519	.init = qpa_audio_init,
	520	.fini = qpa_audio_fini,
	521	.pcm_ops = &qpa_pcm_ops,
1a4ea1e3	522	.can_be_default = 1,
bee37f32 JQ	523	.max_voices_out = INT_MAX,
	524	.max_voices_in = INT_MAX,
	525	.voice_size_out = sizeof (PAVoiceOut),
	526	.voice_size_in = sizeof (PAVoiceIn)
b8e59f18	527	};