spiceaudio.c (9216B)
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 43typedef 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 53typedef struct SpiceVoiceIn { 54 HWVoiceIn hw; 55 SpiceRecordInstance sin; 56 RateCtl rate; 57 int active; 58} SpiceVoiceIn; 59 60static 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 67static 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 74static void *spice_audio_init(Audiodev *dev) 75{ 76 if (!using_spice) { 77 return NULL; 78 } 79 return &spice_audio_init; 80} 81 82static void spice_audio_fini (void *opaque) 83{ 84 /* nothing */ 85} 86 87/* playback */ 88 89static 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 116static 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 123static 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 = MIN((out->fsize - out->fpos) << 2, *size); 134 } 135 136 *size = audio_rate_get_bytes(&hw->info, &out->rate, *size); 137 138 return out->frame + out->fpos; 139} 140 141static size_t line_out_put_buffer(HWVoiceOut *hw, void *buf, size_t size) 142{ 143 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); 144 145 if (buf) { 146 assert(buf == out->frame + out->fpos && out->fpos <= out->fsize); 147 out->fpos += size >> 2; 148 149 if (out->fpos == out->fsize) { /* buffer full */ 150 spice_server_playback_put_samples(&out->sin, out->frame); 151 out->frame = NULL; 152 } 153 } 154 155 return size; 156} 157 158static void line_out_enable(HWVoiceOut *hw, bool enable) 159{ 160 SpiceVoiceOut *out = container_of (hw, SpiceVoiceOut, hw); 161 162 if (enable) { 163 if (out->active) { 164 return; 165 } 166 out->active = 1; 167 audio_rate_start(&out->rate); 168 spice_server_playback_start (&out->sin); 169 } else { 170 if (!out->active) { 171 return; 172 } 173 out->active = 0; 174 if (out->frame) { 175 memset(out->frame + out->fpos, 0, (out->fsize - out->fpos) << 2); 176 spice_server_playback_put_samples (&out->sin, out->frame); 177 out->frame = NULL; 178 } 179 spice_server_playback_stop (&out->sin); 180 } 181} 182 183#if ((SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && (SPICE_INTERFACE_PLAYBACK_MINOR >= 2)) 184static void line_out_volume(HWVoiceOut *hw, Volume *vol) 185{ 186 SpiceVoiceOut *out = container_of(hw, SpiceVoiceOut, hw); 187 uint16_t svol[2]; 188 189 assert(vol->channels == 2); 190 svol[0] = vol->vol[0] * 257; 191 svol[1] = vol->vol[1] * 257; 192 spice_server_playback_set_volume(&out->sin, 2, svol); 193 spice_server_playback_set_mute(&out->sin, vol->mute); 194} 195#endif 196 197/* record */ 198 199static int line_in_init(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque) 200{ 201 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 202 struct audsettings settings; 203 204#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 205 settings.freq = spice_server_get_best_record_rate(NULL); 206#else 207 settings.freq = SPICE_INTERFACE_RECORD_FREQ; 208#endif 209 settings.nchannels = SPICE_INTERFACE_RECORD_CHAN; 210 settings.fmt = AUDIO_FORMAT_S16; 211 settings.endianness = AUDIO_HOST_ENDIANNESS; 212 213 audio_pcm_init_info (&hw->info, &settings); 214 hw->samples = LINE_IN_SAMPLES; 215 in->active = 0; 216 217 in->sin.base.sif = &record_sif.base; 218 qemu_spice.add_interface(&in->sin.base); 219#if SPICE_INTERFACE_RECORD_MAJOR > 2 || SPICE_INTERFACE_RECORD_MINOR >= 3 220 spice_server_set_record_rate(&in->sin, settings.freq); 221#endif 222 return 0; 223} 224 225static void line_in_fini (HWVoiceIn *hw) 226{ 227 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 228 229 spice_server_remove_interface (&in->sin.base); 230} 231 232static size_t line_in_read(HWVoiceIn *hw, void *buf, size_t len) 233{ 234 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 235 uint64_t to_read = audio_rate_get_bytes(&hw->info, &in->rate, len) >> 2; 236 size_t ready = spice_server_record_get_samples(&in->sin, buf, to_read); 237 238 /* XXX: do we need this? */ 239 if (ready == 0) { 240 memset(buf, 0, to_read << 2); 241 ready = to_read; 242 } 243 244 return ready << 2; 245} 246 247static void line_in_enable(HWVoiceIn *hw, bool enable) 248{ 249 SpiceVoiceIn *in = container_of (hw, SpiceVoiceIn, hw); 250 251 if (enable) { 252 if (in->active) { 253 return; 254 } 255 in->active = 1; 256 audio_rate_start(&in->rate); 257 spice_server_record_start (&in->sin); 258 } else { 259 if (!in->active) { 260 return; 261 } 262 in->active = 0; 263 spice_server_record_stop (&in->sin); 264 } 265} 266 267#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 268static void line_in_volume(HWVoiceIn *hw, Volume *vol) 269{ 270 SpiceVoiceIn *in = container_of(hw, SpiceVoiceIn, hw); 271 uint16_t svol[2]; 272 273 assert(vol->channels == 2); 274 svol[0] = vol->vol[0] * 257; 275 svol[1] = vol->vol[1] * 257; 276 spice_server_record_set_volume(&in->sin, 2, svol); 277 spice_server_record_set_mute(&in->sin, vol->mute); 278} 279#endif 280 281static struct audio_pcm_ops audio_callbacks = { 282 .init_out = line_out_init, 283 .fini_out = line_out_fini, 284 .write = audio_generic_write, 285 .get_buffer_out = line_out_get_buffer, 286 .put_buffer_out = line_out_put_buffer, 287 .enable_out = line_out_enable, 288#if (SPICE_INTERFACE_PLAYBACK_MAJOR >= 1) && \ 289 (SPICE_INTERFACE_PLAYBACK_MINOR >= 2) 290 .volume_out = line_out_volume, 291#endif 292 293 .init_in = line_in_init, 294 .fini_in = line_in_fini, 295 .read = line_in_read, 296 .run_buffer_in = audio_generic_run_buffer_in, 297 .enable_in = line_in_enable, 298#if ((SPICE_INTERFACE_RECORD_MAJOR >= 2) && (SPICE_INTERFACE_RECORD_MINOR >= 2)) 299 .volume_in = line_in_volume, 300#endif 301}; 302 303static struct audio_driver spice_audio_driver = { 304 .name = "spice", 305 .descr = "spice audio driver", 306 .init = spice_audio_init, 307 .fini = spice_audio_fini, 308 .pcm_ops = &audio_callbacks, 309 .max_voices_out = 1, 310 .max_voices_in = 1, 311 .voice_size_out = sizeof (SpiceVoiceOut), 312 .voice_size_in = sizeof (SpiceVoiceIn), 313}; 314 315static void register_audio_spice(void) 316{ 317 audio_driver_register(&spice_audio_driver); 318} 319type_init(register_audio_spice); 320 321module_dep("ui-spice-core");