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 SpiceVoiceOut { 44 HWVoiceOut hw; 45 SpicePlaybackInstance sin; 46 RateCtl rate; 47 int active; 48 uint32_t *frame; 49 uint32_t fpos; 50 uint32_t fsize; 51 } SpiceVoiceOut; 52 53 typedef struct SpiceVoiceIn { 54 HWVoiceIn hw; 55 SpiceRecordInstance sin; 56 RateCtl rate; 57 int active; 58 } SpiceVoiceIn; 59 60 static const SpicePlaybackInterface playback_sif = { 61 .base.type = SPICE_INTERFACE_PLAYBACK, 62 .base.description = "playback", 63 .base.major_version = SPICE_INTERFACE_PLAYBACK_MAJOR, 64 .base.minor_version = SPICE_INTERFACE_PLAYBACK_MINOR, 65 }; 66 67 static const SpiceRecordInterface record_sif = { 68 .base.type = SPICE_INTERFACE_RECORD, 69 .base.description = "record", 70 .base.major_version = SPICE_INTERFACE_RECORD_MAJOR, 71 .base.minor_version = SPICE_INTERFACE_RECORD_MINOR, 72 }; 73 74 static void *spice_audio_init(Audiodev *dev) 75 { 76 if (!using_spice) { 77 return NULL; 78 } 79 return &spice_audio_init; 80 } 81 82 static void spice_audio_fini (void *opaque) 83 { 84 /* nothing */ 85 } 86 87 /* playback */ 88 89 static int line_out_init(HWVoiceOut *hw, struct audsettings *as, 90 void *drv_opaque) 91 { 92 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 93 struct audsettings settings; 94 95 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 96 settings.freq = spice_server_get_best_playback_rate(NULL); 97 #else 98 settings.freq = SPICE_INTERFACE_PLAYBACK_FREQ; 99 #endif 100 settings.nchannels = SPICE_INTERFACE_PLAYBACK_CHAN; 101 settings.fmt = AUDIO_FORMAT_S16; 102 settings.endianness = AUDIO_HOST_ENDIANNESS; 103 104 audio_pcm_init_info (&hw->info, &settings); 105 hw->samples = LINE_OUT_SAMPLES; 106 out->active = 0; 107 108 out->sin.base.sif = &playback_sif.base; 109 qemu_spice_add_interface (&out->sin.base); 110 #if SPICE_INTERFACE_PLAYBACK_MAJOR > 1 || SPICE_INTERFACE_PLAYBACK_MINOR >= 3 111 spice_server_set_playback_rate(&out->sin, settings.freq); 112 #endif 113 return 0; 114 } 115 116 static void line_out_fini (HWVoiceOut *hw) 117 { 118 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 119 120 spice_server_remove_interface (&out->sin.base); 121 } 122 123 static void *line_out_get_buffer(HWVoiceOut *hw, size_t *size) 124 { 125 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); 126 127 if (!out->frame) { 128 spice_server_playback_get_buffer(&out->sin, &out->frame, &out->fsize); 129 out->fpos = 0; 130 } 131 132 if (out->frame) { 133 *size = audio_rate_get_bytes( 134 &hw->info, &out->rate, (out->fsize - out->fpos) << hw->info.shift); 135 } else { 136 audio_rate_start(&out->rate); 137 } 138 return out->frame + out->fpos; 139 } 140 141 static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size) 142 { 143 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); 144 145 assert(buf == out->frame + out->fpos && out->fpos <= out->fsize); 146 out->fpos += size >> 2; 147 148 if (out->fpos == out->fsize) { /* buffer full */ 149 spice_server_playback_put_samples(&out->sin, out->frame); 150 out->frame = NULL; 151 } 152 153 return size; 154 } 155 156 static void line_out_enable(HWVoiceOut *hw, bool enable) 157 { 158 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 159 160 if (enable) { 161 if (out->active) { 162 return; 163 } 164 out->active = 1; 165 audio_rate_start(&out->rate); 166 spice_server_playback_start (&out->sin); 167 } else { 168 if (!out->active) { 169 return; 170 } 171 out->active = 0; 172 if (out->frame) { 173 memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2); 174 spice_server_playback_put_samples (&out->sin, out->frame); 175 out->frame = NULL; 176 } 177 spice_server_playback_stop (&out->sin); 178 } 179 } 180 181 #if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 182 static void line_out_volume(HWVoiceOut *hw, struct mixeng_volume *vol) 183 { 184 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); 185 uint16_t svol[2]; 186 187 svol[0] = vol->l / ((1ULL << 16) + 1); 188 svol[1] = vol->r / ((1ULL << 16) + 1); 189 spice_server_playback_set_volume(&out->sin, 2, svol); 190 spice_server_playback_set_mute(&out->sin, vol->mute); 191 } 192 #endif 193 194 /* record */ 195 196 static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) 197 { 198 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 199 struct audsettings settings; 200 201 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 202 settings.freq = spice_server_get_best_record_rate(NULL); 203 #else 204 settings.freq = SPICE_INTERFACE_RECORD_FREQ; 205 #endif 206 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; 207 settings.fmt = AUDIO_FORMAT_S16; 208 settings.endianness = AUDIO_HOST_ENDIANNESS; 209 210 audio_pcm_init_info (&hw->info, &settings); 211 hw->samples = LINE_IN_SAMPLES; 212 in->active = 0; 213 214 in->sin.base.sif = &record_sif.base; 215 qemu_spice_add_interface (&in->sin.base); 216 #if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 217 spice_server_set_record_rate(&in->sin, settings.freq); 218 #endif 219 return 0; 220 } 221 222 static void line_in_fini (HWVoiceIn *hw) 223 { 224 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 225 226 spice_server_remove_interface (&in->sin.base); 227 } 228 229 static size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len) 230 { 231 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 232 uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2; 233 size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read); 234 235 /* XXX: do we need this? */ 236 if (ready == 0) { 237 memset(buf, 0, to_read << 2); 238 ready = to_read; 239 } 240 241 return ready << 2; 242 } 243 244 static void line_in_enable(HWVoiceIn *hw, bool enable) 245 { 246 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 247 248 if (enable) { 249 if (in->active) { 250 return; 251 } 252 in->active = 1; 253 audio_rate_start(&in->rate); 254 spice_server_record_start (&in->sin); 255 } else { 256 if (!in->active) { 257 return; 258 } 259 in->active = 0; 260 spice_server_record_stop (&in->sin); 261 } 262 } 263 264 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 265 static void line_in_volume(HWVoiceIn *hw, struct mixeng_volume *vol) 266 { 267 SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw); 268 uint16_t svol[2]; 269 270 svol[0] = vol->l / ((1ULL << 16) + 1); 271 svol[1] = vol->r / ((1ULL << 16) + 1); 272 spice_server_record_set_volume(&in->sin, 2, svol); 273 spice_server_record_set_mute(&in->sin, vol->mute); 274 } 275 #endif 276 277 static struct audio_pcm_ops audio_callbacks = { 278 .init_out = line_out_init, 279 .fini_out = line_out_fini, 280 .write = audio_generic_write, 281 .get_buffer_out = line_out_get_buffer, 282 .put_buffer_out = line_out_put_buffer, 283 .enable_out = line_out_enable, 284 #if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \ 285 (SPICE_INTERFACE_PLAYBACK_MINOR >= 2) 286 .volume_out = line_out_volume, 287 #endif 288 289 .init_in = line_in_init, 290 .fini_in = line_in_fini, 291 .read = line_in_read, 292 .enable_in = line_in_enable, 293 #if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 294 .volume_in = line_in_volume, 295 #endif 296 }; 297 298 static struct audio_driver spice_audio_driver = { 299 .name = "spice", 300 .descr = "spice audio driver", 301 .init = spice_audio_init, 302 .fini = spice_audio_fini, 303 .pcm_ops = &audio_callbacks, 304 .max_voices_out = 1, 305 .max_voices_in = 1, 306 .voice_size_out = sizeof (SpiceVoiceOut), 307 .voice_size_in = sizeof (SpiceVoiceIn), 308 }; 309 310 void qemu_spice_audio_init (void) 311 { 312 spice_audio_driver.can_be_default = 1; 313 } 314 315 static void register_audio_spice(void) 316 { 317 audio_driver_register(&spice_audio_driver); 318 } 319 type_init(register_audio_spice); 320