1 /* 2 * Copyright (C) 2010 Red Hat, Inc. 3 * 4 * maintained by Gerd Hoffmann <kraxel@redhat.com> 5 * 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. 10 * 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. 15 * 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/>. 18 */ 19 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 "ui/qemu-spice.h" 26 27 #define AUDIO_CAP "spice" 28 #include "audio.h" 29 #include "audio_int.h" 30 31 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 32 #define LINE_OUT_SAMPLES (480 * 4) 33 #else 34 #define LINE_OUT_SAMPLES (256 * 4) 35 #endif 36 37 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 38 #define LINE_IN_SAMPLES (480 * 4) 39 #else 40 #define LINE_IN_SAMPLES (256 * 4) 41 #endif 42 43 typedef struct SpiceRateCtl { 44 int64_t start_ticks; 45 int64_t bytes_sent; 46 } SpiceRateCtl; 47 48 typedef struct SpiceVoiceOut { 49 HWVoiceOut hw; 50 SpicePlaybackInstance sin; 51 SpiceRateCtl rate; 52 int active; 53 uint32_t *frame; 54 uint32_t *fpos; 55 uint32_t fsize; 56 } SpiceVoiceOut; 57 58 typedef struct SpiceVoiceIn { 59 HWVoiceIn hw; 60 SpiceRecordInstance sin; 61 SpiceRateCtl rate; 62 int active; 63 uint32_t samples[LINE_IN_SAMPLES]; 64 } SpiceVoiceIn; 65 66 static const SpicePlaybackInterface playback_sif = { 67 .base.type = SPICE_INTERFACE_PLAYBACK, 68 .base.description = "playback", 69 .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR, 70 .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR, 71 }; 72 73 static const SpiceRecordInterface record_sif = { 74 .base.type = SPICE_INTERFACE_RECORD, 75 .base.description = "record", 76 .base.major_version = SPICE_INTERFACE_RECORD_MAJOR, 77 .base.minor_version = SPICE_INTERFACE_RECORD_MINOR, 78 }; 79 80 static void *spice_audio_init(Audiodev *dev) 81 { 82 if (!using_spice) { 83 return NULL; 84 } 85 return &spice_audio_init; 86 } 87 88 static void spice_audio_fini (void *opaque) 89 { 90 /* nothing */ 91 } 92 93 static void rate_start (SpiceRateCtl *rate) 94 { 95 memset (rate, 0, sizeof (*rate)); 96 rate->start_ticks = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 97 } 98 99 static int rate_get_samples (struct audio_pcm_info *info, SpiceRateCtl *rate) 100 { 101 int64_t now; 102 int64_t ticks; 103 int64_t bytes; 104 int64_t samples; 105 106 now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); 107 ticks = now - rate->start_ticks; 108 bytes = muldiv64(ticks, info->bytes_per_second, NANOSECONDS_PER_SECOND); 109 samples = (bytes - rate->bytes_sent) >> info->shift; 110 if (samples < 0 || samples > 65536) { 111 error_report("Resetting rate control (%" PRId64 " samples)", samples); 112 rate_start(rate); 113 samples = 0; 114 } 115 rate->bytes_sent += samples << info->shift; 116 return samples; 117 } 118 119 /* playback */ 120 121 static int line_out_init(HWVoiceOut *hw, struct audsettings *as, 122 void *drv_opaque) 123 { 124 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 125 struct audsettings settings; 126 127 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 128 settings.freq = spice_server_get_best_playback_rate(NULL); 129 #else 130 settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ; 131 #endif 132 settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN; 133 settings.fmt = AUDIO_FORMAT_S16; 134 settings.endianness = AUDIO_HOST_ENDIANNESS; 135 136 audio_pcm_init_info (&hw->info, &settings); 137 hw->samples = LINE_OUT_SAMPLES; 138 out->active = 0; 139 140 out->sin.base.sif = &playback_sif.base; 141 qemu_spice_add_interface (&out->sin.base); 142 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 143 spice_server_set_playback_rate(&out->sin, settings.freq); 144 #endif 145 return 0; 146 } 147 148 static void line_out_fini (HWVoiceOut *hw) 149 { 150 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 151 152 spice_server_remove_interface (&out->sin.base); 153 } 154 155 static size_t line_out_run (HWVoiceOut *hw, size_t live) 156 { 157 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 158 size_t rpos, decr; 159 size_t samples; 160 161 if (!live) { 162 return 0; 163 } 164 165 decr = rate_get_samples (&hw->info, &out->rate); 166 decr = MIN (live, decr); 167 168 samples = decr; 169 rpos = hw->rpos; 170 while (samples) { 171 int left_till_end_samples = hw->samples - rpos; 172 int len = MIN (samples, left_till_end_samples); 173 174 if (!out->frame) { 175 spice_server_playback_get_buffer (&out->sin, &out->frame, &out->fsize); 176 out->fpos = out->frame; 177 } 178 if (out->frame) { 179 len = MIN (len, out->fsize); 180 hw->clip (out->fpos, hw->mix_buf + rpos, len); 181 out->fsize -= len; 182 out->fpos += len; 183 if (out->fsize == 0) { 184 spice_server_playback_put_samples (&out->sin, out->frame); 185 out->frame = out->fpos = NULL; 186 } 187 } 188 rpos = (rpos + len) % hw->samples; 189 samples -= len; 190 } 191 hw->rpos = rpos; 192 return decr; 193 } 194 195 static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) 196 { 197 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 198 199 switch (cmd) { 200 case VOICE_ENABLE: 201 if (out->active) { 202 break; 203 } 204 out->active = 1; 205 rate_start (&out->rate); 206 spice_server_playback_start (&out->sin); 207 break; 208 case VOICE_DISABLE: 209 if (!out->active) { 210 break; 211 } 212 out->active = 0; 213 if (out->frame) { 214 memset (out->fpos, 0, out->fsize << 2); 215 spice_server_playback_put_samples (&out->sin, out->frame); 216 out->frame = out->fpos = NULL; 217 } 218 spice_server_playback_stop (&out->sin); 219 break; 220 case VOICE_VOLUME: 221 { 222 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 223 SWVoiceOut *sw; 224 va_list ap; 225 uint16_t vol[2]; 226 227 va_start (ap, cmd); 228 sw = va_arg (ap, SWVoiceOut *); 229 va_end (ap); 230 231 vol[0] = sw->vol.l / ((1ULL << 16) + 1); 232 vol[1] = sw->vol.r / ((1ULL << 16) + 1); 233 spice_server_playback_set_volume (&out->sin, 2, vol); 234 spice_server_playback_set_mute (&out->sin, sw->vol.mute); 235 #endif 236 break; 237 } 238 } 239 240 return 0; 241 } 242 243 /* record */ 244 245 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) 246 { 247 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 248 struct audsettings settings; 249 250 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 251 settings.freq = spice_server_get_best_record_rate(NULL); 252 #else 253 settings.freq = SPICE_INTERFACE_RECORD_FREQ; 254 #endif 255 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; 256 settings.fmt = AUDIO_FORMAT_S16; 257 settings.endianness = AUDIO_HOST_ENDIANNESS; 258 259 audio_pcm_init_info (&hw->info, &settings); 260 hw->samples = LINE_IN_SAMPLES; 261 in->active = 0; 262 263 in->sin.base.sif = &record_sif.base; 264 qemu_spice_add_interface (&in->sin.base); 265 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 266 spice_server_set_record_rate(&in->sin, settings.freq); 267 #endif 268 return 0; 269 } 270 271 static void line_in_fini (HWVoiceIn *hw) 272 { 273 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 274 275 spice_server_remove_interface (&in->sin.base); 276 } 277 278 static size_t line_in_run(HWVoiceIn *hw) 279 { 280 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 281 size_t num_samples; 282 int ready; 283 size_t len[2]; 284 uint64_t delta_samp; 285 const uint32_t *samples; 286 287 if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) { 288 return 0; 289 } 290 291 delta_samp = rate_get_samples (&hw->info, &in->rate); 292 num_samples = MIN (num_samples, delta_samp); 293 294 ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples); 295 samples = in->samples; 296 if (ready == 0) { 297 static const uint32_t silence[LINE_IN_SAMPLES]; 298 samples = silence; 299 ready = LINE_IN_SAMPLES; 300 } 301 302 num_samples = MIN (ready, num_samples); 303 304 if (hw->wpos + num_samples > hw->samples) { 305 len[0] = hw->samples - hw->wpos; 306 len[1] = num_samples - len[0]; 307 } else { 308 len[0] = num_samples; 309 len[1] = 0; 310 } 311 312 hw->conv (hw->conv_buf + hw->wpos, samples, len[0]); 313 314 if (len[1]) { 315 hw->conv (hw->conv_buf, samples + len[0], len[1]); 316 } 317 318 hw->wpos = (hw->wpos + num_samples) % hw->samples; 319 320 return num_samples; 321 } 322 323 static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) 324 { 325 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 326 327 switch (cmd) { 328 case VOICE_ENABLE: 329 if (in->active) { 330 break; 331 } 332 in->active = 1; 333 rate_start (&in->rate); 334 spice_server_record_start (&in->sin); 335 break; 336 case VOICE_DISABLE: 337 if (!in->active) { 338 break; 339 } 340 in->active = 0; 341 spice_server_record_stop (&in->sin); 342 break; 343 case VOICE_VOLUME: 344 { 345 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 346 SWVoiceIn *sw; 347 va_list ap; 348 uint16_t vol[2]; 349 350 va_start (ap, cmd); 351 sw = va_arg (ap, SWVoiceIn *); 352 va_end (ap); 353 354 vol[0] = sw->vol.l / ((1ULL << 16) + 1); 355 vol[1] = sw->vol.r / ((1ULL << 16) + 1); 356 spice_server_record_set_volume (&in->sin, 2, vol); 357 spice_server_record_set_mute (&in->sin, sw->vol.mute); 358 #endif 359 break; 360 } 361 } 362 363 return 0; 364 } 365 366 static struct audio_pcm_ops audio_callbacks = { 367 .init_out = line_out_init, 368 .fini_out = line_out_fini, 369 .run_out = line_out_run, 370 .ctl_out = line_out_ctl, 371 372 .init_in = line_in_init, 373 .fini_in = line_in_fini, 374 .run_in = line_in_run, 375 .ctl_in = line_in_ctl, 376 }; 377 378 static struct audio_driver spice_audio_driver = { 379 .name = "spice", 380 .descr = "spice audio driver", 381 .init = spice_audio_init, 382 .fini = spice_audio_fini, 383 .pcm_ops = &audio_callbacks, 384 .max_voices_out = 1, 385 .max_voices_in = 1, 386 .voice_size_out = sizeof (SpiceVoiceOut), 387 .voice_size_in = sizeof (SpiceVoiceIn), 388 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 389 .ctl_caps = VOICE_VOLUME_CAP 390 #endif 391 }; 392 393 void qemu_spice_audio_init (void) 394 { 395 spice_audio_driver.can_be_default = 1; 396 } 397 398 static void register_audio_spice(void) 399 { 400 audio_driver_register(&spice_audio_driver); 401 } 402 type_init(register_audio_spice); 403