audio/spiceaudio.c - third_party/qemu - Git at Google

 /*
  * Copyright (C) 2010 Red Hat, Inc.
  *
  * maintained by Gerd Hoffmann <kraxel@redhat.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 or
  * (at your option) version 3 of the License.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  */

 #include "qemu/osdep.h"
 #include "qemu/host-utils.h"
 #include "qemu/module.h"
 #include "qemu/error-report.h"
 #include "qemu/timer.h"
 #include "ui/qemu-spice.h"

 #define AUDIO_CAP "spice"
 #include "audio.h"
 #include "audio_int.h"

 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
 #define LINE_OUT_SAMPLES (480 * 4)
 #else
 #define LINE_OUT_SAMPLES (256 * 4)
 #endif

 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
 #define LINE_IN_SAMPLES (480 * 4)
 #else
 #define LINE_IN_SAMPLES (256 * 4)
 #endif

 typedef struct SpiceVoiceOut {
     HWVoiceOut            hw;
     SpicePlaybackInstance sin;
     RateCtl               rate;
     int                   active;
     uint32_t              *frame;
     uint32_t              fpos;
     uint32_t              fsize;
 } SpiceVoiceOut;

 typedef struct SpiceVoiceIn {
     HWVoiceIn             hw;
     SpiceRecordInstance   sin;
     RateCtl               rate;
     int                   active;
 } SpiceVoiceIn;

 static const SpicePlaybackInterface playback_sif = {
     .base.type          = SPICE_INTERFACE_PLAYBACK,
     .base.description   = "playback",
     .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
     .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
 };

 static const SpiceRecordInterface record_sif = {
     .base.type          = SPICE_INTERFACE_RECORD,
     .base.description   = "record",
     .base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
     .base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
 };

 static void *spice_audio_init(Audiodev *dev)
 {
     if (!using_spice) {
         return NULL;
     }
     return &spice_audio_init;
 }

 static void spice_audio_fini (void *opaque)
 {
     /* nothing */
 }

 /* playback */

 static int line_out_init(HWVoiceOut *hw, struct audsettings *as,
                          void *drv_opaque)
 {
     SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
     struct audsettings settings;

 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
     settings.freq       = spice_server_get_best_playback_rate(NULL);
 #else
     settings.freq       = SPICE_INTERFACE_PLAYBACK_FREQ;
 #endif
     settings.nchannels  = SPICE_INTERFACE_PLAYBACK_CHAN;
     settings.fmt        = AUDIO_FORMAT_S16;
     settings.endianness = AUDIO_HOST_ENDIANNESS;

     audio_pcm_init_info (&hw->info, &settings);
     hw->samples = LINE_OUT_SAMPLES;
     out->active = 0;

     out->sin.base.sif = &playback_sif.base;
     qemu_spice_add_interface (&out->sin.base);
 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
     spice_server_set_playback_rate(&out->sin, settings.freq);
 #endif
     return 0;
 }

 static void line_out_fini (HWVoiceOut *hw)
 {
     SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);

     spice_server_remove_interface (&out->sin.base);
 }

 static void *line_out_get_buffer(HWVoiceOut *hw, size_t *size)
 {
     SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);

     if (!out->frame) {
         spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize);
         out->fpos = 0;
     }

     if (out->frame) {
         *size = audio_rate_get_bytes(
             &hw->info, &out->rate,
             (out->fsize - out->fpos) * hw->info.bytes_per_frame);
     } else {
         audio_rate_start(&out->rate);
     }
     return out->frame + out->fpos;
 }

 static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size)
 {
     SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);

     assert(buf == out->frame + out->fpos && out->fpos <= out->fsize);
     out->fpos += size >> 2;

     if (out->fpos == out->fsize) { /* buffer full */
         spice_server_playback_put_samples(&out->sin, out->frame);
         out->frame = NULL;
     }

     return size;
 }

 static void line_out_enable(HWVoiceOut *hw, bool enable)
 {
     SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);

     if (enable) {
         if (out->active) {
             return;
         }
         out->active = 1;
         audio_rate_start(&out->rate);
         spice_server_playback_start (&out->sin);
     } else {
         if (!out->active) {
             return;
         }
         out->active = 0;
         if (out->frame) {
             memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2);
             spice_server_playback_put_samples (&out->sin, out->frame);
             out->frame = NULL;
         }
         spice_server_playback_stop (&out->sin);
     }
 }

 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
 static void line_out_volume(HWVoiceOut *hw, Volume *vol)
 {
     SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
     uint16_t svol[2];

     assert(vol->channels == 2);
     svol[0] = vol->vol[0] * 257;
     svol[1] = vol->vol[1] * 257;
     spice_server_playback_set_volume(&out->sin, 2, svol);
     spice_server_playback_set_mute(&out->sin, vol->mute);
 }
 #endif

 /* record */

 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
 {
     SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
     struct audsettings settings;

 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
     settings.freq       = spice_server_get_best_record_rate(NULL);
 #else
     settings.freq       = SPICE_INTERFACE_RECORD_FREQ;
 #endif
     settings.nchannels  = SPICE_INTERFACE_RECORD_CHAN;
     settings.fmt        = AUDIO_FORMAT_S16;
     settings.endianness = AUDIO_HOST_ENDIANNESS;

     audio_pcm_init_info (&hw->info, &settings);
     hw->samples = LINE_IN_SAMPLES;
     in->active = 0;

     in->sin.base.sif = &record_sif.base;
     qemu_spice_add_interface (&in->sin.base);
 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
     spice_server_set_record_rate(&in->sin, settings.freq);
 #endif
     return 0;
 }

 static void line_in_fini (HWVoiceIn *hw)
 {
     SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);

     spice_server_remove_interface (&in->sin.base);
 }

 static size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len)
 {
     SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
     uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2;
     size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read);

     /* XXX: do we need this? */
     if (ready == 0) {
         memset(buf, 0, to_read << 2);
         ready = to_read;
     }

     return ready << 2;
 }

 static void line_in_enable(HWVoiceIn *hw, bool enable)
 {
     SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);

     if (enable) {
         if (in->active) {
             return;
         }
         in->active = 1;
         audio_rate_start(&in->rate);
         spice_server_record_start (&in->sin);
     } else {
         if (!in->active) {
             return;
         }
         in->active = 0;
         spice_server_record_stop (&in->sin);
     }
 }

 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
 static void line_in_volume(HWVoiceIn *hw, Volume *vol)
 {
     SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
     uint16_t svol[2];

     assert(vol->channels == 2);
     svol[0] = vol->vol[0] * 257;
     svol[1] = vol->vol[1] * 257;
     spice_server_record_set_volume(&in->sin, 2, svol);
     spice_server_record_set_mute(&in->sin, vol->mute);
 }
 #endif

 static struct audio_pcm_ops audio_callbacks = {
     .init_out = line_out_init,
     .fini_out = line_out_fini,
     .write    = audio_generic_write,
     .get_buffer_out = line_out_get_buffer,
     .put_buffer_out = line_out_put_buffer,
     .enable_out = line_out_enable,
 #if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \
         (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)
     .volume_out = line_out_volume,
 #endif

     .init_in  = line_in_init,
     .fini_in  = line_in_fini,
     .read     = line_in_read,
     .enable_in = line_in_enable,
 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
     .volume_in = line_in_volume,
 #endif
 };

 static struct audio_driver spice_audio_driver = {
     .name           = "spice",
     .descr          = "spice audio driver",
     .init           = spice_audio_init,
     .fini           = spice_audio_fini,
     .pcm_ops        = &audio_callbacks,
     .max_voices_out = 1,
     .max_voices_in  = 1,
     .voice_size_out = sizeof (SpiceVoiceOut),
     .voice_size_in  = sizeof (SpiceVoiceIn),
 };

 void qemu_spice_audio_init (void)
 {
     spice_audio_driver.can_be_default = 1;
 }

 static void register_audio_spice(void)
 {
     audio_driver_register(&spice_audio_driver);
 }
 type_init(register_audio_spice);
	/*
	* Copyright (C) 2010 Red Hat, Inc.
	*
	* maintained by Gerd Hoffmann <kraxel@redhat.com>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License as
	* published by the Free Software Foundation; either version 2 or
	* (at your option) version 3 of the License.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	*/

	#include "qemu/osdep.h"
	#include "qemu/host-utils.h"
	#include "qemu/module.h"
	#include "qemu/error-report.h"
	#include "qemu/timer.h"
	#include "ui/qemu-spice.h"

	#define AUDIO_CAP "spice"
	#include "audio.h"
	#include "audio_int.h"

	#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 \|\| SPICE_INTERFACE_PLAYBACK_MINOR >= 3
	#define LINE_OUT_SAMPLES (480 * 4)
	#else
	#define LINE_OUT_SAMPLES (256 * 4)
	#endif

	#if SPICE_INTERFACE_RECORD_MAJOR > 2 \|\| SPICE_INTERFACE_RECORD_MINOR >= 3
	#define LINE_IN_SAMPLES (480 * 4)
	#else
	#define LINE_IN_SAMPLES (256 * 4)
	#endif

	typedef struct SpiceVoiceOut {
	HWVoiceOut hw;
	SpicePlaybackInstance sin;
	RateCtl rate;
	int active;
	uint32_t *frame;
	uint32_t fpos;
	uint32_t fsize;
	} SpiceVoiceOut;

	typedef struct SpiceVoiceIn {
	HWVoiceIn hw;
	SpiceRecordInstance sin;
	RateCtl rate;
	int active;
	} SpiceVoiceIn;

	static const SpicePlaybackInterface playback_sif = {
	.base.type = SPICE_INTERFACE_PLAYBACK,
	.base.description = "playback",
	.base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
	.base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
	};

	static const SpiceRecordInterface record_sif = {
	.base.type = SPICE_INTERFACE_RECORD,
	.base.description = "record",
	.base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
	.base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
	};

	static void spice_audio_init(Audiodev dev)
	{
	if (!using_spice) {
	return NULL;
	}
	return &spice_audio_init;
	}

	static void spice_audio_fini (void *opaque)
	{
	/* nothing */
	}

	/* playback */

	static int line_out_init(HWVoiceOut hw, struct audsettings as,
	void *drv_opaque)
	{
	SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
	struct audsettings settings;

	#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 \|\| SPICE_INTERFACE_PLAYBACK_MINOR >= 3
	settings.freq = spice_server_get_best_playback_rate(NULL);
	#else
	settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
	#endif
	settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
	settings.fmt = AUDIO_FORMAT_S16;
	settings.endianness = AUDIO_HOST_ENDIANNESS;

	audio_pcm_init_info (&hw->info, &settings);
	hw->samples = LINE_OUT_SAMPLES;
	out->active = 0;

	out->sin.base.sif = &playback_sif.base;
	qemu_spice_add_interface (&out->sin.base);
	#if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 \|\| SPICE_INTERFACE_PLAYBACK_MINOR >= 3
	spice_server_set_playback_rate(&out->sin, settings.freq);
	#endif
	return 0;
	}

	static void line_out_fini (HWVoiceOut *hw)
	{
	SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);

	spice_server_remove_interface (&out->sin.base);
	}

	static void line_out_get_buffer(HWVoiceOut hw, size_t *size)
	{
	SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);

	if (!out->frame) {
	spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize);
	out->fpos = 0;
	}

	if (out->frame) {
	*size = audio_rate_get_bytes(
	&hw->info, &out->rate,
	(out->fsize - out->fpos) * hw->info.bytes_per_frame);
	} else {
	audio_rate_start(&out->rate);
	}
	return out->frame + out->fpos;
	}

	static size_t line_out_put_buffer(HWVoiceOut hw, void buf, size_t size)
	{
	SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);

	assert(buf == out->frame + out->fpos && out->fpos <= out->fsize);
	out->fpos += size >> 2;

	if (out->fpos == out->fsize) { /* buffer full */
	spice_server_playback_put_samples(&out->sin, out->frame);
	out->frame = NULL;
	}

	return size;
	}

	static void line_out_enable(HWVoiceOut *hw, bool enable)
	{
	SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);

	if (enable) {
	if (out->active) {
	return;
	}
	out->active = 1;
	audio_rate_start(&out->rate);
	spice_server_playback_start (&out->sin);
	} else {
	if (!out->active) {
	return;
	}
	out->active = 0;
	if (out->frame) {
	memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2);
	spice_server_playback_put_samples (&out->sin, out->frame);
	out->frame = NULL;
	}
	spice_server_playback_stop (&out->sin);
	}
	}

	#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
	static void line_out_volume(HWVoiceOut hw, Volume vol)
	{
	SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
	uint16_t svol[2];

	assert(vol->channels == 2);
	svol[0] = vol->vol[0] * 257;
	svol[1] = vol->vol[1] * 257;
	spice_server_playback_set_volume(&out->sin, 2, svol);
	spice_server_playback_set_mute(&out->sin, vol->mute);
	}
	#endif

	/* record */

	static int line_in_init(HWVoiceIn hw, struct audsettings as, void *drv_opaque)
	{
	SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
	struct audsettings settings;

	#if SPICE_INTERFACE_RECORD_MAJOR > 2 \|\| SPICE_INTERFACE_RECORD_MINOR >= 3
	settings.freq = spice_server_get_best_record_rate(NULL);
	#else
	settings.freq = SPICE_INTERFACE_RECORD_FREQ;
	#endif
	settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
	settings.fmt = AUDIO_FORMAT_S16;
	settings.endianness = AUDIO_HOST_ENDIANNESS;

	audio_pcm_init_info (&hw->info, &settings);
	hw->samples = LINE_IN_SAMPLES;
	in->active = 0;

	in->sin.base.sif = &record_sif.base;
	qemu_spice_add_interface (&in->sin.base);
	#if SPICE_INTERFACE_RECORD_MAJOR > 2 \|\| SPICE_INTERFACE_RECORD_MINOR >= 3
	spice_server_set_record_rate(&in->sin, settings.freq);
	#endif
	return 0;
	}

	static void line_in_fini (HWVoiceIn *hw)
	{
	SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);

	spice_server_remove_interface (&in->sin.base);
	}

	static size_t line_in_read(HWVoiceIn hw, void buf, size_t len)
	{
	SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
	uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2;
	size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read);

	/* XXX: do we need this? */
	if (ready == 0) {
	memset(buf, 0, to_read << 2);
	ready = to_read;
	}

	return ready << 2;
	}

	static void line_in_enable(HWVoiceIn *hw, bool enable)
	{
	SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);

	if (enable) {
	if (in->active) {
	return;
	}
	in->active = 1;
	audio_rate_start(&in->rate);
	spice_server_record_start (&in->sin);
	} else {
	if (!in->active) {
	return;
	}
	in->active = 0;
	spice_server_record_stop (&in->sin);
	}
	}

	#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
	static void line_in_volume(HWVoiceIn hw, Volume vol)
	{
	SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
	uint16_t svol[2];

	assert(vol->channels == 2);
	svol[0] = vol->vol[0] * 257;
	svol[1] = vol->vol[1] * 257;
	spice_server_record_set_volume(&in->sin, 2, svol);
	spice_server_record_set_mute(&in->sin, vol->mute);
	}
	#endif

	static struct audio_pcm_ops audio_callbacks = {
	.init_out = line_out_init,
	.fini_out = line_out_fini,
	.write = audio_generic_write,
	.get_buffer_out = line_out_get_buffer,
	.put_buffer_out = line_out_put_buffer,
	.enable_out = line_out_enable,
	#if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \
	(SPICE_INTERFACE_PLAYBACK_MINOR >= 2)
	.volume_out = line_out_volume,
	#endif

	.init_in = line_in_init,
	.fini_in = line_in_fini,
	.read = line_in_read,
	.enable_in = line_in_enable,
	#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
	.volume_in = line_in_volume,
	#endif
	};

	static struct audio_driver spice_audio_driver = {
	.name = "spice",
	.descr = "spice audio driver",
	.init = spice_audio_init,
	.fini = spice_audio_fini,
	.pcm_ops = &audio_callbacks,
	.max_voices_out = 1,
	.max_voices_in = 1,
	.voice_size_out = sizeof (SpiceVoiceOut),
	.voice_size_in = sizeof (SpiceVoiceIn),
	};

	void qemu_spice_audio_init (void)
	{
	spice_audio_driver.can_be_default = 1;
	}

	static void register_audio_spice(void)
	{
	audio_driver_register(&spice_audio_driver);
	}
	type_init(register_audio_spice);