[qemu.git] / audio / esdaudio.c

/*
 * QEMU ESD audio driver
 *
 * Copyright (c) 2006 Frederick Reeve (brushed up by malc)
 *
 * 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 <esd.h>
#include "qemu-common.h"
#include "audio.h"
#include <signal.h>

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

typedef struct {
    HWVoiceOut hw;
    int done;
    int live;
    int decr;
    int rpos;
    void *pcm_buf;
    int fd;
    struct audio_pt pt;
} ESDVoiceOut;

typedef struct {
    HWVoiceIn hw;
    int done;
    int dead;
    int incr;
    int wpos;
    void *pcm_buf;
    int fd;
    struct audio_pt pt;
} ESDVoiceIn;

static struct {
    int samples;
    int divisor;
    char *dac_host;
    char *adc_host;
} conf = {
    .samples = 1024,
    .divisor = 2,
};

static void GCC_FMT_ATTR (2, 3) qesd_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", strerror (err));
}

/* playback */
static void *qesd_thread_out (void *arg)
{
    ESDVoiceOut *esd = arg;
    HWVoiceOut *hw = &esd->hw;
    int threshold;

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

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

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

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

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

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

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

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

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

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

        again:
            written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift);
            if (written == -1) {
                if (errno == EINTR || errno == EAGAIN) {
                    goto again;
                }
                qesd_logerr (errno, "write failed\n");
                return NULL;
            }

            if (written != chunk << hw->info.shift) {
                int wsamples = written >> hw->info.shift;
                int wbytes = wsamples << hw->info.shift;
                if (wbytes != written) {
                    dolog ("warning: Misaligned write %d (requested %d), "
                           "alignment %d\n",
                           wbytes, written, hw->info.align + 1);
                }
                to_mix -= wsamples;
                rpos = (rpos + wsamples) % hw->samples;
                break;
            }

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

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

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

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

static int qesd_run_out (HWVoiceOut *hw)
{
    int live, decr;
    ESDVoiceOut *esd = (ESDVoiceOut *) hw;

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

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

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

static int qesd_init_out (HWVoiceOut *hw, struct audsettings *as)
{
    ESDVoiceOut *esd = (ESDVoiceOut *) hw;
    struct audsettings obt_as = *as;
    int esdfmt = ESD_STREAM | ESD_PLAY;
    int err;
    sigset_t set, old_set;

    sigfillset (&set);

    esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
    switch (as->fmt) {
    case AUD_FMT_S8:
    case AUD_FMT_U8:
        esdfmt |= ESD_BITS8;
        obt_as.fmt = AUD_FMT_U8;
        break;

    case AUD_FMT_S32:
    case AUD_FMT_U32:
        dolog ("Will use 16 instead of 32 bit samples\n");

    case AUD_FMT_S16:
    case AUD_FMT_U16:
    deffmt:
        esdfmt |= ESD_BITS16;
        obt_as.fmt = AUD_FMT_S16;
        break;

    default:
        dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
        goto deffmt;

    }
    obt_as.endianness = AUDIO_HOST_ENDIANNESS;

    audio_pcm_init_info (&hw->info, &obt_as);

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

    esd->fd = -1;
    err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
    if (err) {
        qesd_logerr (err, "pthread_sigmask failed\n");
        goto fail1;
    }

    esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
    if (esd->fd < 0) {
        qesd_logerr (errno, "esd_play_stream failed\n");
        goto fail2;
    }

    if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
        goto fail3;
    }

    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
    if (err) {
        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
    }

    return 0;

 fail3:
    if (close (esd->fd)) {
        qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
                     AUDIO_FUNC, esd->fd);
    }
    esd->fd = -1;

 fail2:
    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
    if (err) {
        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
    }

 fail1:
    qemu_free (esd->pcm_buf);
    esd->pcm_buf = NULL;
    return -1;
}

static void qesd_fini_out (HWVoiceOut *hw)
{
    void *ret;
    ESDVoiceOut *esd = (ESDVoiceOut *) hw;

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

    if (esd->fd >= 0) {
        if (close (esd->fd)) {
            qesd_logerr (errno, "failed to close esd socket\n");
        }
        esd->fd = -1;
    }

    audio_pt_fini (&esd->pt, AUDIO_FUNC);

    qemu_free (esd->pcm_buf);
    esd->pcm_buf = NULL;
}

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

/* capture */
static void *qesd_thread_in (void *arg)
{
    ESDVoiceIn *esd = arg;
    HWVoiceIn *hw = &esd->hw;
    int threshold;

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

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

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

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

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

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

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

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

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

        again:
            nread = read (esd->fd, buf, chunk << hw->info.shift);
            if (nread == -1) {
                if (errno == EINTR || errno == EAGAIN) {
                    goto again;
                }
                qesd_logerr (errno, "read failed\n");
                return NULL;
            }

            if (nread != chunk << hw->info.shift) {
                int rsamples = nread >> hw->info.shift;
                int rbytes = rsamples << hw->info.shift;
                if (rbytes != nread) {
                    dolog ("warning: Misaligned write %d (requested %d), "
                           "alignment %d\n",
                           rbytes, nread, hw->info.align + 1);
                }
                to_grab -= rsamples;
                wpos = (wpos + rsamples) % hw->samples;
                break;
            }

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

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

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

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

static int qesd_run_in (HWVoiceIn *hw)
{
    int live, incr, dead;
    ESDVoiceIn *esd = (ESDVoiceIn *) hw;

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

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

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

static int qesd_init_in (HWVoiceIn *hw, struct audsettings *as)
{
    ESDVoiceIn *esd = (ESDVoiceIn *) hw;
    struct audsettings obt_as = *as;
    int esdfmt = ESD_STREAM | ESD_RECORD;
    int err;
    sigset_t set, old_set;

    sigfillset (&set);

    esdfmt |= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
    switch (as->fmt) {
    case AUD_FMT_S8:
    case AUD_FMT_U8:
        esdfmt |= ESD_BITS8;
        obt_as.fmt = AUD_FMT_U8;
        break;

    case AUD_FMT_S16:
    case AUD_FMT_U16:
        esdfmt |= ESD_BITS16;
        obt_as.fmt = AUD_FMT_S16;
        break;

    case AUD_FMT_S32:
    case AUD_FMT_U32:
        dolog ("Will use 16 instead of 32 bit samples\n");
        esdfmt |= ESD_BITS16;
        obt_as.fmt = AUD_FMT_S16;
        break;
    }
    obt_as.endianness = AUDIO_HOST_ENDIANNESS;

    audio_pcm_init_info (&hw->info, &obt_as);

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

    esd->fd = -1;

    err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
    if (err) {
        qesd_logerr (err, "pthread_sigmask failed\n");
        goto fail1;
    }

    esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
    if (esd->fd < 0) {
        qesd_logerr (errno, "esd_record_stream failed\n");
        goto fail2;
    }

    if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
        goto fail3;
    }

    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
    if (err) {
        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
    }

    return 0;

 fail3:
    if (close (esd->fd)) {
        qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
                     AUDIO_FUNC, esd->fd);
    }
    esd->fd = -1;

 fail2:
    err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
    if (err) {
        qesd_logerr (err, "pthread_sigmask(restore) failed\n");
    }

 fail1:
    qemu_free (esd->pcm_buf);
    esd->pcm_buf = NULL;
    return -1;
}

static void qesd_fini_in (HWVoiceIn *hw)
{
    void *ret;
    ESDVoiceIn *esd = (ESDVoiceIn *) hw;

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

    if (esd->fd >= 0) {
        if (close (esd->fd)) {
            qesd_logerr (errno, "failed to close esd socket\n");
        }
        esd->fd = -1;
    }

    audio_pt_fini (&esd->pt, AUDIO_FUNC);

    qemu_free (esd->pcm_buf);
    esd->pcm_buf = NULL;
}

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

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

static void qesd_audio_fini (void *opaque)
{
    (void) opaque;
    ldebug ("esd_fini");
}

struct audio_option qesd_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  = "DAC_HOST",
        .tag   = AUD_OPT_STR,
        .valp  = &conf.dac_host,
        .descr = "playback host"
    },
    {
        .name  = "ADC_HOST",
        .tag   = AUD_OPT_STR,
        .valp  = &conf.adc_host,
        .descr = "capture host"
    },
    { /* End of list */ }
};

static struct audio_pcm_ops qesd_pcm_ops = {
    .init_out = qesd_init_out,
    .fini_out = qesd_fini_out,
    .run_out  = qesd_run_out,
    .write    = qesd_write,
    .ctl_out  = qesd_ctl_out,

    .init_in  = qesd_init_in,
    .fini_in  = qesd_fini_in,
    .run_in   = qesd_run_in,
    .read     = qesd_read,
    .ctl_in   = qesd_ctl_in,
};

struct audio_driver esd_audio_driver = {
    .name           = "esd",
    .descr          = "http://en.wikipedia.org/wiki/Esound",
    .options        = qesd_options,
    .init           = qesd_audio_init,
    .fini           = qesd_audio_fini,
    .pcm_ops        = &qesd_pcm_ops,
    .can_be_default = 0,
    .max_voices_out = INT_MAX,
    .max_voices_in  = INT_MAX,
    .voice_size_out = sizeof (ESDVoiceOut),
    .voice_size_in  = sizeof (ESDVoiceIn)
};
Commit	Line	Data
ca9cc28c AZ	1	/*
	2	* QEMU ESD audio driver
	3	*
	4	* Copyright (c) 2006 Frederick Reeve (brushed up by malc)
	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	#include <esd.h>
	25	#include "qemu-common.h"
	26	#include "audio.h"
	27	#include <signal.h>
	28
	29	#define AUDIO_CAP "esd"
	30	#include "audio_int.h"
	31	#include "audio_pt_int.h"
	32
	33	typedef struct {
	34	HWVoiceOut hw;
	35	int done;
	36	int live;
	37	int decr;
	38	int rpos;
	39	void *pcm_buf;
	40	int fd;
	41	struct audio_pt pt;
	42	} ESDVoiceOut;
	43
	44	typedef struct {
	45	HWVoiceIn hw;
	46	int done;
	47	int dead;
	48	int incr;
	49	int wpos;
	50	void *pcm_buf;
	51	int fd;
	52	struct audio_pt pt;
	53	} ESDVoiceIn;
	54
	55	static struct {
	56	int samples;
	57	int divisor;
	58	char *dac_host;
	59	char *adc_host;
	60	} conf = {
1a40d5e2 JQ	61	.samples = 1024,
1a40d5e2 JQ	62	.divisor = 2,
ca9cc28c AZ	63	};
	64
	65	static void GCC_FMT_ATTR (2, 3) qesd_logerr (int err, const char *fmt, ...)
	66	{
	67	va_list ap;
	68
	69	va_start (ap, fmt);
	70	AUD_vlog (AUDIO_CAP, fmt, ap);
	71	va_end (ap);
	72
	73	AUD_log (AUDIO_CAP, "Reason: %s\n", strerror (err));
	74	}
	75
	76	/* playback */
	77	static void qesd_thread_out (void arg)
	78	{
	79	ESDVoiceOut *esd = arg;
	80	HWVoiceOut *hw = &esd->hw;
	81	int threshold;
	82
	83	threshold = conf.divisor ? hw->samples / conf.divisor : 0;
	84
deb9d2ee AZ	85	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
	86	return NULL;
	87	}
	88
ca9cc28c AZ	89	for (;;) {
	90	int decr, to_mix, rpos;
	91
	92	for (;;) {
	93	if (esd->done) {
	94	goto exit;
	95	}
	96
	97	if (esd->live > threshold) {
	98	break;
	99	}
	100
	101	if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
	102	goto exit;
	103	}
	104	}
	105
	106	decr = to_mix = esd->live;
	107	rpos = hw->rpos;
	108
	109	if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
	110	return NULL;
	111	}
	112
	113	while (to_mix) {
	114	ssize_t written;
	115	int chunk = audio_MIN (to_mix, hw->samples - rpos);
1ea879e5	116	struct st_sample *src = hw->mix_buf + rpos;
ca9cc28c AZ	117
	118	hw->clip (esd->pcm_buf, src, chunk);
	119
	120	again:
	121	written = write (esd->fd, esd->pcm_buf, chunk << hw->info.shift);
	122	if (written == -1) {
	123	if (errno == EINTR \|\| errno == EAGAIN) {
	124	goto again;
	125	}
	126	qesd_logerr (errno, "write failed\n");
	127	return NULL;
	128	}
	129
	130	if (written != chunk << hw->info.shift) {
	131	int wsamples = written >> hw->info.shift;
	132	int wbytes = wsamples << hw->info.shift;
	133	if (wbytes != written) {
	134	dolog ("warning: Misaligned write %d (requested %d), "
	135	"alignment %d\n",
	136	wbytes, written, hw->info.align + 1);
	137	}
	138	to_mix -= wsamples;
	139	rpos = (rpos + wsamples) % hw->samples;
	140	break;
	141	}
	142
	143	rpos = (rpos + chunk) % hw->samples;
	144	to_mix -= chunk;
	145	}
	146
	147	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
	148	return NULL;
	149	}
	150
	151	esd->rpos = rpos;
	152	esd->live -= decr;
	153	esd->decr += decr;
	154	}
	155
	156	exit:
	157	audio_pt_unlock (&esd->pt, AUDIO_FUNC);
	158	return NULL;
	159	}
	160
	161	static int qesd_run_out (HWVoiceOut *hw)
	162	{
	163	int live, decr;
	164	ESDVoiceOut esd = (ESDVoiceOut ) hw;
	165
	166	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
	167	return 0;
	168	}
	169
	170	live = audio_pcm_hw_get_live_out (hw);
	171	decr = audio_MIN (live, esd->decr);
	172	esd->decr -= decr;
	173	esd->live = live - decr;
	174	hw->rpos = esd->rpos;
	175	if (esd->live > 0) {
	176	audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
	177	}
	178	else {
	179	audio_pt_unlock (&esd->pt, AUDIO_FUNC);
	180	}
181	return decr;
182	}
183
184	static int qesd_write (SWVoiceOut sw, void buf, int len)
185	{
186	return audio_pcm_sw_write (sw, buf, len);
187	}
188
1ea879e5	189	static int qesd_init_out (HWVoiceOut hw, struct audsettings as)
ca9cc28c AZ	190	{
ca9cc28c AZ	191	ESDVoiceOut esd = (ESDVoiceOut ) hw;
1ea879e5	192	struct audsettings obt_as = *as;
ca9cc28c AZ	193	int esdfmt = ESD_STREAM \| ESD_PLAY;
	194	int err;
	195	sigset_t set, old_set;
	196
	197	sigfillset (&set);
	198
	199	esdfmt \|= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
	200	switch (as->fmt) {
	201	case AUD_FMT_S8:
	202	case AUD_FMT_U8:
	203	esdfmt \|= ESD_BITS8;
	204	obt_as.fmt = AUD_FMT_U8;
	205	break;
	206
	207	case AUD_FMT_S32:
	208	case AUD_FMT_U32:
	209	dolog ("Will use 16 instead of 32 bit samples\n");
	210
	211	case AUD_FMT_S16:
	212	case AUD_FMT_U16:
	213	deffmt:
	214	esdfmt \|= ESD_BITS16;
	215	obt_as.fmt = AUD_FMT_S16;
	216	break;
	217
	218	default:
	219	dolog ("Internal logic error: Bad audio format %d\n", as->fmt);
ca9cc28c AZ	220	goto deffmt;
	221
	222	}
deb9d2ee	223	obt_as.endianness = AUDIO_HOST_ENDIANNESS;
ca9cc28c AZ	224
	225	audio_pcm_init_info (&hw->info, &obt_as);
	226
	227	hw->samples = conf.samples;
	228	esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
	229	if (!esd->pcm_buf) {
	230	dolog ("Could not allocate buffer (%d bytes)\n",
	231	hw->samples << hw->info.shift);
	232	return -1;
	233	}
	234
	235	esd->fd = -1;
	236	err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
	237	if (err) {
	238	qesd_logerr (err, "pthread_sigmask failed\n");
	239	goto fail1;
	240	}
	241
	242	esd->fd = esd_play_stream (esdfmt, as->freq, conf.dac_host, NULL);
	243	if (esd->fd < 0) {
	244	qesd_logerr (errno, "esd_play_stream failed\n");
	245	goto fail2;
	246	}
	247
	248	if (audio_pt_init (&esd->pt, qesd_thread_out, esd, AUDIO_CAP, AUDIO_FUNC)) {
	249	goto fail3;
	250	}
	251
	252	err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
	253	if (err) {
	254	qesd_logerr (err, "pthread_sigmask(restore) failed\n");
	255	}
	256
	257	return 0;
	258
	259	fail3:
	260	if (close (esd->fd)) {
	261	qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
	262	AUDIO_FUNC, esd->fd);
	263	}
	264	esd->fd = -1;
	265
	266	fail2:
	267	err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
	268	if (err) {
	269	qesd_logerr (err, "pthread_sigmask(restore) failed\n");
	270	}
	271
	272	fail1:
	273	qemu_free (esd->pcm_buf);
	274	esd->pcm_buf = NULL;
	275	return -1;
	276	}
	277
	278	static void qesd_fini_out (HWVoiceOut *hw)
	279	{
	280	void *ret;
	281	ESDVoiceOut esd = (ESDVoiceOut ) hw;
	282
	283	audio_pt_lock (&esd->pt, AUDIO_FUNC);
	284	esd->done = 1;
	285	audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
	286	audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
	287
288	if (esd->fd >= 0) {
289	if (close (esd->fd)) {
290	qesd_logerr (errno, "failed to close esd socket\n");
291	}
292	esd->fd = -1;
293	}
294
295	audio_pt_fini (&esd->pt, AUDIO_FUNC);
296
297	qemu_free (esd->pcm_buf);
298	esd->pcm_buf = NULL;
299	}
300
301	static int qesd_ctl_out (HWVoiceOut *hw, int cmd, ...)
302	{
303	(void) hw;
304	(void) cmd;
305	return 0;
306	}
307
308	/* capture */
309	static void qesd_thread_in (void arg)
310	{
311	ESDVoiceIn *esd = arg;
312	HWVoiceIn *hw = &esd->hw;
313	int threshold;
314
315	threshold = conf.divisor ? hw->samples / conf.divisor : 0;
316
deb9d2ee AZ	317	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
	318	return NULL;
	319	}
	320
ca9cc28c AZ	321	for (;;) {
	322	int incr, to_grab, wpos;
	323
	324	for (;;) {
	325	if (esd->done) {
	326	goto exit;
	327	}
	328
	329	if (esd->dead > threshold) {
	330	break;
	331	}
	332
	333	if (audio_pt_wait (&esd->pt, AUDIO_FUNC)) {
	334	goto exit;
	335	}
	336	}
	337
	338	incr = to_grab = esd->dead;
	339	wpos = hw->wpos;
	340
	341	if (audio_pt_unlock (&esd->pt, AUDIO_FUNC)) {
	342	return NULL;
	343	}
	344
	345	while (to_grab) {
	346	ssize_t nread;
	347	int chunk = audio_MIN (to_grab, hw->samples - wpos);
	348	void *buf = advance (esd->pcm_buf, wpos);
	349
	350	again:
	351	nread = read (esd->fd, buf, chunk << hw->info.shift);
	352	if (nread == -1) {
	353	if (errno == EINTR \|\| errno == EAGAIN) {
	354	goto again;
	355	}
	356	qesd_logerr (errno, "read failed\n");
	357	return NULL;
	358	}
	359
	360	if (nread != chunk << hw->info.shift) {
	361	int rsamples = nread >> hw->info.shift;
	362	int rbytes = rsamples << hw->info.shift;
	363	if (rbytes != nread) {
	364	dolog ("warning: Misaligned write %d (requested %d), "
	365	"alignment %d\n",
	366	rbytes, nread, hw->info.align + 1);
	367	}
	368	to_grab -= rsamples;
	369	wpos = (wpos + rsamples) % hw->samples;
	370	break;
	371	}
	372
	373	hw->conv (hw->conv_buf + wpos, buf, nread >> hw->info.shift,
	374	&nominal_volume);
	375	wpos = (wpos + chunk) % hw->samples;
	376	to_grab -= chunk;
	377	}
	378
	379	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
	380	return NULL;
	381	}
	382
	383	esd->wpos = wpos;
	384	esd->dead -= incr;
385	esd->incr += incr;
386	}
387
388	exit:
389	audio_pt_unlock (&esd->pt, AUDIO_FUNC);
390	return NULL;
391	}
392
393	static int qesd_run_in (HWVoiceIn *hw)
394	{
395	int live, incr, dead;
396	ESDVoiceIn esd = (ESDVoiceIn ) hw;
397
398	if (audio_pt_lock (&esd->pt, AUDIO_FUNC)) {
399	return 0;
400	}
401
402	live = audio_pcm_hw_get_live_in (hw);
403	dead = hw->samples - live;
404	incr = audio_MIN (dead, esd->incr);
405	esd->incr -= incr;
406	esd->dead = dead - incr;
407	hw->wpos = esd->wpos;
408	if (esd->dead > 0) {
409	audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
410	}
411	else {
412	audio_pt_unlock (&esd->pt, AUDIO_FUNC);
413	}
414	return incr;
415	}
416
417	static int qesd_read (SWVoiceIn sw, void buf, int len)
418	{
419	return audio_pcm_sw_read (sw, buf, len);
420	}
421
1ea879e5	422	static int qesd_init_in (HWVoiceIn hw, struct audsettings as)
ca9cc28c AZ	423	{
ca9cc28c AZ	424	ESDVoiceIn esd = (ESDVoiceIn ) hw;
1ea879e5	425	struct audsettings obt_as = *as;
ca9cc28c AZ	426	int esdfmt = ESD_STREAM \| ESD_RECORD;
	427	int err;
	428	sigset_t set, old_set;
	429
	430	sigfillset (&set);
	431
	432	esdfmt \|= (as->nchannels == 2) ? ESD_STEREO : ESD_MONO;
	433	switch (as->fmt) {
	434	case AUD_FMT_S8:
	435	case AUD_FMT_U8:
	436	esdfmt \|= ESD_BITS8;
	437	obt_as.fmt = AUD_FMT_U8;
	438	break;
	439
	440	case AUD_FMT_S16:
	441	case AUD_FMT_U16:
	442	esdfmt \|= ESD_BITS16;
	443	obt_as.fmt = AUD_FMT_S16;
	444	break;
	445
	446	case AUD_FMT_S32:
	447	case AUD_FMT_U32:
	448	dolog ("Will use 16 instead of 32 bit samples\n");
	449	esdfmt \|= ESD_BITS16;
	450	obt_as.fmt = AUD_FMT_S16;
	451	break;
	452	}
deb9d2ee	453	obt_as.endianness = AUDIO_HOST_ENDIANNESS;
ca9cc28c AZ	454
	455	audio_pcm_init_info (&hw->info, &obt_as);
	456
	457	hw->samples = conf.samples;
	458	esd->pcm_buf = audio_calloc (AUDIO_FUNC, hw->samples, 1 << hw->info.shift);
	459	if (!esd->pcm_buf) {
	460	dolog ("Could not allocate buffer (%d bytes)\n",
	461	hw->samples << hw->info.shift);
	462	return -1;
	463	}
	464
	465	esd->fd = -1;
	466
	467	err = pthread_sigmask (SIG_BLOCK, &set, &old_set);
	468	if (err) {
	469	qesd_logerr (err, "pthread_sigmask failed\n");
	470	goto fail1;
	471	}
	472
	473	esd->fd = esd_record_stream (esdfmt, as->freq, conf.adc_host, NULL);
	474	if (esd->fd < 0) {
	475	qesd_logerr (errno, "esd_record_stream failed\n");
	476	goto fail2;
	477	}
	478
	479	if (audio_pt_init (&esd->pt, qesd_thread_in, esd, AUDIO_CAP, AUDIO_FUNC)) {
	480	goto fail3;
	481	}
	482
	483	err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
	484	if (err) {
	485	qesd_logerr (err, "pthread_sigmask(restore) failed\n");
	486	}
	487
	488	return 0;
	489
	490	fail3:
	491	if (close (esd->fd)) {
	492	qesd_logerr (errno, "%s: close on esd socket(%d) failed\n",
	493	AUDIO_FUNC, esd->fd);
	494	}
	495	esd->fd = -1;
	496
	497	fail2:
	498	err = pthread_sigmask (SIG_SETMASK, &old_set, NULL);
	499	if (err) {
	500	qesd_logerr (err, "pthread_sigmask(restore) failed\n");
	501	}
	502
	503	fail1:
	504	qemu_free (esd->pcm_buf);
	505	esd->pcm_buf = NULL;
	506	return -1;
	507	}
	508
	509	static void qesd_fini_in (HWVoiceIn *hw)
	510	{
	511	void *ret;
	512	ESDVoiceIn esd = (ESDVoiceIn ) hw;
	513
	514	audio_pt_lock (&esd->pt, AUDIO_FUNC);
	515	esd->done = 1;
	516	audio_pt_unlock_and_signal (&esd->pt, AUDIO_FUNC);
	517	audio_pt_join (&esd->pt, &ret, AUDIO_FUNC);
518
519	if (esd->fd >= 0) {
520	if (close (esd->fd)) {
521	qesd_logerr (errno, "failed to close esd socket\n");
522	}
523	esd->fd = -1;
524	}
525
526	audio_pt_fini (&esd->pt, AUDIO_FUNC);
527
528	qemu_free (esd->pcm_buf);
529	esd->pcm_buf = NULL;
530	}
531
532	static int qesd_ctl_in (HWVoiceIn *hw, int cmd, ...)
533	{
534	(void) hw;
535	(void) cmd;
536	return 0;
537	}
538
539	/* common */
540	static void *qesd_audio_init (void)
541	{
542	return &conf;
543	}
544
545	static void qesd_audio_fini (void *opaque)
546	{
547	(void) opaque;
548	ldebug ("esd_fini");
549	}
550
551	struct audio_option qesd_options[] = {
98f9f48c	552	{
	553	.name = "SAMPLES",
	554	.tag = AUD_OPT_INT,
	555	.valp = &conf.samples,
	556	.descr = "buffer size in samples"
	557	},
	558	{
	559	.name = "DIVISOR",
	560	.tag = AUD_OPT_INT,
	561	.valp = &conf.divisor,
	562	.descr = "threshold divisor"
	563	},
	564	{
	565	.name = "DAC_HOST",
	566	.tag = AUD_OPT_STR,
	567	.valp = &conf.dac_host,
	568	.descr = "playback host"
	569	},
	570	{
	571	.name = "ADC_HOST",
	572	.tag = AUD_OPT_STR,
	573	.valp = &conf.adc_host,
	574	.descr = "capture host"
	575	},
2700efa3	576	{ /* End of list */ }
ca9cc28c AZ	577	};
ca9cc28c AZ	578
35f4b58c	579	static struct audio_pcm_ops qesd_pcm_ops = {
1dd3e4d1 JQ	580	.init_out = qesd_init_out,
	581	.fini_out = qesd_fini_out,
	582	.run_out = qesd_run_out,
	583	.write = qesd_write,
	584	.ctl_out = qesd_ctl_out,
	585
	586	.init_in = qesd_init_in,
	587	.fini_in = qesd_fini_in,
	588	.run_in = qesd_run_in,
	589	.read = qesd_read,
	590	.ctl_in = qesd_ctl_in,
ca9cc28c AZ	591	};
	592
	593	struct audio_driver esd_audio_driver = {
bee37f32 JQ	594	.name = "esd",
	595	.descr = "http://en.wikipedia.org/wiki/Esound",
	596	.options = qesd_options,
	597	.init = qesd_audio_init,
	598	.fini = qesd_audio_fini,
	599	.pcm_ops = &qesd_pcm_ops,
	600	.can_be_default = 0,
	601	.max_voices_out = INT_MAX,
	602	.max_voices_in = INT_MAX,
	603	.voice_size_out = sizeof (ESDVoiceOut),
	604	.voice_size_in = sizeof (ESDVoiceIn)
ca9cc28c	605	};