2 * Copyright (C) 2010 Red Hat, Inc.
4 * maintained by Gerd Hoffmann <kraxel@redhat.com>
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 or
9 * (at your option) version 3 of the License.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 #include "qemu/osdep.h"
21 #include "qemu/host-utils.h"
22 #include "qemu/module.h"
23 #include "qemu/error-report.h"
24 #include "qemu/timer.h"
25 #include "qapi/error.h"
26 #include "ui/qemu-spice.h"
28 #define AUDIO_CAP "spice"
30 #include "audio_int.h"
32 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
33 #define LINE_OUT_SAMPLES (480 * 4)
35 #define LINE_OUT_SAMPLES (256 * 4)
38 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
39 #define LINE_IN_SAMPLES (480 * 4)
41 #define LINE_IN_SAMPLES (256 * 4)
44 typedef struct SpiceVoiceOut {
46 SpicePlaybackInstance sin;
54 typedef struct SpiceVoiceIn {
56 SpiceRecordInstance sin;
61 static const SpicePlaybackInterface playback_sif = {
62 .base.type = SPICE_INTERFACE_PLAYBACK,
63 .base.description = "playback",
64 .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR,
65 .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR,
68 static const SpiceRecordInterface record_sif = {
69 .base.type = SPICE_INTERFACE_RECORD,
70 .base.description = "record",
71 .base.major_version = SPICE_INTERFACE_RECORD_MAJOR,
72 .base.minor_version = SPICE_INTERFACE_RECORD_MINOR,
75 static void *spice_audio_init(Audiodev *dev, Error **errp)
78 error_setg(errp, "Cannot use spice audio without -spice");
82 return &spice_audio_init;
85 static void spice_audio_fini (void *opaque)
92 static int line_out_init(HWVoiceOut *hw, struct audsettings *as,
95 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
96 struct audsettings settings;
98 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
99 settings.freq = spice_server_get_best_playback_rate(NULL);
101 settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ;
103 settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN;
104 settings.fmt = AUDIO_FORMAT_S16;
105 settings.endianness = AUDIO_HOST_ENDIANNESS;
107 audio_pcm_init_info (&hw->info, &settings);
108 hw->samples = LINE_OUT_SAMPLES;
111 out->sin.base.sif = &playback_sif.base;
112 qemu_spice.add_interface(&out->sin.base);
113 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3
114 spice_server_set_playback_rate(&out->sin, settings.freq);
119 static void line_out_fini (HWVoiceOut *hw)
121 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
123 spice_server_remove_interface (&out->sin.base);
126 static size_t line_out_get_free(HWVoiceOut *hw)
128 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
130 return audio_rate_peek_bytes(&out->rate, &hw->info);
133 static void *line_out_get_buffer(HWVoiceOut *hw, size_t *size)
135 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
138 spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize);
143 *size = MIN((out->fsize - out->fpos) << 2, *size);
146 return out->frame + out->fpos;
149 static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size)
151 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
153 audio_rate_add_bytes(&out->rate, size);
156 assert(buf == out->frame + out->fpos && out->fpos <= out->fsize);
157 out->fpos += size >> 2;
159 if (out->fpos == out->fsize) { /* buffer full */
160 spice_server_playback_put_samples(&out->sin, out->frame);
168 static void line_out_enable(HWVoiceOut *hw, bool enable)
170 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw);
177 audio_rate_start(&out->rate);
178 spice_server_playback_start (&out->sin);
185 memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2);
186 spice_server_playback_put_samples (&out->sin, out->frame);
189 spice_server_playback_stop (&out->sin);
193 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2))
194 static void line_out_volume(HWVoiceOut *hw, Volume *vol)
196 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw);
199 assert(vol->channels == 2);
200 svol[0] = vol->vol[0] * 257;
201 svol[1] = vol->vol[1] * 257;
202 spice_server_playback_set_volume(&out->sin, 2, svol);
203 spice_server_playback_set_mute(&out->sin, vol->mute);
209 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)
211 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
212 struct audsettings settings;
214 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
215 settings.freq = spice_server_get_best_record_rate(NULL);
217 settings.freq = SPICE_INTERFACE_RECORD_FREQ;
219 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN;
220 settings.fmt = AUDIO_FORMAT_S16;
221 settings.endianness = AUDIO_HOST_ENDIANNESS;
223 audio_pcm_init_info (&hw->info, &settings);
224 hw->samples = LINE_IN_SAMPLES;
227 in->sin.base.sif = &record_sif.base;
228 qemu_spice.add_interface(&in->sin.base);
229 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3
230 spice_server_set_record_rate(&in->sin, settings.freq);
235 static void line_in_fini (HWVoiceIn *hw)
237 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
239 spice_server_remove_interface (&in->sin.base);
242 static size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len)
244 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
245 uint64_t to_read = audio_rate_get_bytes(&in->rate, &hw->info, len) >> 2;
246 size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read);
249 * If the client didn't send new frames, it most likely disconnected.
250 * Generate silence in this case to avoid a stalled audio stream.
253 memset(buf, 0, to_read << 2);
260 static void line_in_enable(HWVoiceIn *hw, bool enable)
262 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw);
269 audio_rate_start(&in->rate);
270 spice_server_record_start (&in->sin);
276 spice_server_record_stop (&in->sin);
280 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
281 static void line_in_volume(HWVoiceIn *hw, Volume *vol)
283 SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw);
286 assert(vol->channels == 2);
287 svol[0] = vol->vol[0] * 257;
288 svol[1] = vol->vol[1] * 257;
289 spice_server_record_set_volume(&in->sin, 2, svol);
290 spice_server_record_set_mute(&in->sin, vol->mute);
294 static struct audio_pcm_ops audio_callbacks = {
295 .init_out = line_out_init,
296 .fini_out = line_out_fini,
297 .write = audio_generic_write,
298 .buffer_get_free = line_out_get_free,
299 .get_buffer_out = line_out_get_buffer,
300 .put_buffer_out = line_out_put_buffer,
301 .enable_out = line_out_enable,
302 #if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \
303 (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)
304 .volume_out = line_out_volume,
307 .init_in = line_in_init,
308 .fini_in = line_in_fini,
309 .read = line_in_read,
310 .run_buffer_in = audio_generic_run_buffer_in,
311 .enable_in = line_in_enable,
312 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2))
313 .volume_in = line_in_volume,
317 static struct audio_driver spice_audio_driver = {
319 .descr = "spice audio driver",
320 .init = spice_audio_init,
321 .fini = spice_audio_fini,
322 .pcm_ops = &audio_callbacks,
325 .voice_size_out = sizeof (SpiceVoiceOut),
326 .voice_size_in = sizeof (SpiceVoiceIn),
329 static void register_audio_spice(void)
331 audio_driver_register(&spice_audio_driver);
333 type_init(register_audio_spice);
335 module_dep("ui-spice-core");