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 "hw/hw.h" 22 #include "qemu/host-utils.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 int line_out_run (HWVoiceOut *hw, int live) 156 { 157 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 158 int rpos, decr; 159 int samples; 160 161 if (!live) { 162 return 0; 163 } 164 165 decr = rate_get_samples (&hw->info, &out->rate); 166 decr = audio_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 = audio_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 = audio_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_write (SWVoiceOut *sw, void *buf, int len) 196 { 197 return audio_pcm_sw_write (sw, buf, len); 198 } 199 200 static int line_out_ctl (HWVoiceOut *hw, int cmd, ...) 201 { 202 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 203 204 switch (cmd) { 205 case VOICE_ENABLE: 206 if (out->active) { 207 break; 208 } 209 out->active = 1; 210 rate_start (&out->rate); 211 spice_server_playback_start (&out->sin); 212 break; 213 case VOICE_DISABLE: 214 if (!out->active) { 215 break; 216 } 217 out->active = 0; 218 if (out->frame) { 219 memset (out->fpos, 0, out->fsize << 2); 220 spice_server_playback_put_samples (&out->sin, out->frame); 221 out->frame = out->fpos = NULL; 222 } 223 spice_server_playback_stop (&out->sin); 224 break; 225 case VOICE_VOLUME: 226 { 227 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 228 SWVoiceOut *sw; 229 va_list ap; 230 uint16_t vol[2]; 231 232 va_start (ap, cmd); 233 sw = va_arg (ap, SWVoiceOut *); 234 va_end (ap); 235 236 vol[0] = sw->vol.l / ((1ULL << 16) + 1); 237 vol[1] = sw->vol.r / ((1ULL << 16) + 1); 238 spice_server_playback_set_volume (&out->sin, 2, vol); 239 spice_server_playback_set_mute (&out->sin, sw->vol.mute); 240 #endif 241 break; 242 } 243 } 244 245 return 0; 246 } 247 248 /* record */ 249 250 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) 251 { 252 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 253 struct audsettings settings; 254 255 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 256 settings.freq = spice_server_get_best_record_rate(NULL); 257 #else 258 settings.freq = SPICE_INTERFACE_RECORD_FREQ; 259 #endif 260 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; 261 settings.fmt = AUDIO_FORMAT_S16; 262 settings.endianness = AUDIO_HOST_ENDIANNESS; 263 264 audio_pcm_init_info (&hw->info, &settings); 265 hw->samples = LINE_IN_SAMPLES; 266 in->active = 0; 267 268 in->sin.base.sif = &record_sif.base; 269 qemu_spice_add_interface (&in->sin.base); 270 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 271 spice_server_set_record_rate(&in->sin, settings.freq); 272 #endif 273 return 0; 274 } 275 276 static void line_in_fini (HWVoiceIn *hw) 277 { 278 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 279 280 spice_server_remove_interface (&in->sin.base); 281 } 282 283 static int line_in_run (HWVoiceIn *hw) 284 { 285 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 286 int num_samples; 287 int ready; 288 int len[2]; 289 uint64_t delta_samp; 290 const uint32_t *samples; 291 292 if (!(num_samples = hw->samples - audio_pcm_hw_get_live_in (hw))) { 293 return 0; 294 } 295 296 delta_samp = rate_get_samples (&hw->info, &in->rate); 297 num_samples = audio_MIN (num_samples, delta_samp); 298 299 ready = spice_server_record_get_samples (&in->sin, in->samples, num_samples); 300 samples = in->samples; 301 if (ready == 0) { 302 static const uint32_t silence[LINE_IN_SAMPLES]; 303 samples = silence; 304 ready = LINE_IN_SAMPLES; 305 } 306 307 num_samples = audio_MIN (ready, num_samples); 308 309 if (hw->wpos + num_samples > hw->samples) { 310 len[0] = hw->samples - hw->wpos; 311 len[1] = num_samples - len[0]; 312 } else { 313 len[0] = num_samples; 314 len[1] = 0; 315 } 316 317 hw->conv (hw->conv_buf + hw->wpos, samples, len[0]); 318 319 if (len[1]) { 320 hw->conv (hw->conv_buf, samples + len[0], len[1]); 321 } 322 323 hw->wpos = (hw->wpos + num_samples) % hw->samples; 324 325 return num_samples; 326 } 327 328 static int line_in_read (SWVoiceIn *sw, void *buf, int size) 329 { 330 return audio_pcm_sw_read (sw, buf, size); 331 } 332 333 static int line_in_ctl (HWVoiceIn *hw, int cmd, ...) 334 { 335 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 336 337 switch (cmd) { 338 case VOICE_ENABLE: 339 if (in->active) { 340 break; 341 } 342 in->active = 1; 343 rate_start (&in->rate); 344 spice_server_record_start (&in->sin); 345 break; 346 case VOICE_DISABLE: 347 if (!in->active) { 348 break; 349 } 350 in->active = 0; 351 spice_server_record_stop (&in->sin); 352 break; 353 case VOICE_VOLUME: 354 { 355 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 356 SWVoiceIn *sw; 357 va_list ap; 358 uint16_t vol[2]; 359 360 va_start (ap, cmd); 361 sw = va_arg (ap, SWVoiceIn *); 362 va_end (ap); 363 364 vol[0] = sw->vol.l / ((1ULL << 16) + 1); 365 vol[1] = sw->vol.r / ((1ULL << 16) + 1); 366 spice_server_record_set_volume (&in->sin, 2, vol); 367 spice_server_record_set_mute (&in->sin, sw->vol.mute); 368 #endif 369 break; 370 } 371 } 372 373 return 0; 374 } 375 376 static struct audio_pcm_ops audio_callbacks = { 377 .init_out = line_out_init, 378 .fini_out = line_out_fini, 379 .run_out = line_out_run, 380 .write = line_out_write, 381 .ctl_out = line_out_ctl, 382 383 .init_in = line_in_init, 384 .fini_in = line_in_fini, 385 .run_in = line_in_run, 386 .read = line_in_read, 387 .ctl_in = line_in_ctl, 388 }; 389 390 static struct audio_driver spice_audio_driver = { 391 .name = "spice", 392 .descr = "spice audio driver", 393 .init = spice_audio_init, 394 .fini = spice_audio_fini, 395 .pcm_ops = &audio_callbacks, 396 .max_voices_out = 1, 397 .max_voices_in = 1, 398 .voice_size_out = sizeof (SpiceVoiceOut), 399 .voice_size_in = sizeof (SpiceVoiceIn), 400 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 401 .ctl_caps = VOICE_VOLUME_CAP 402 #endif 403 }; 404 405 void qemu_spice_audio_init (void) 406 { 407 spice_audio_driver.can_be_default = 1; 408 } 409 410 static void register_audio_spice(void) 411 { 412 audio_driver_register(&spice_audio_driver); 413 } 414 type_init(register_audio_spice); 415