audio_int.h (9191B)
1 /* 2 * QEMU Audio subsystem header 3 * 4 * Copyright (c) 2003-2005 Vassili Karpov (malc) 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #ifndef QEMU_AUDIO_INT_H 26 #define QEMU_AUDIO_INT_H 27 28 #ifdef CONFIG_AUDIO_COREAUDIO 29 #define FLOAT_MIXENG 30 /* #define RECIPROCAL */ 31 #endif 32 #include "mixeng.h" 33 34 #ifdef CONFIG_GIO 35 #include <gio/gio.h> 36 #endif 37 38 struct audio_pcm_ops; 39 40 struct audio_callback { 41 void *opaque; 42 audio_callback_fn fn; 43 }; 44 45 struct audio_pcm_info { 46 int bits; 47 bool is_signed; 48 bool is_float; 49 int freq; 50 int nchannels; 51 int bytes_per_frame; 52 int bytes_per_second; 53 int swap_endianness; 54 }; 55 56 typedef struct AudioState AudioState; 57 typedef struct SWVoiceCap SWVoiceCap; 58 59 typedef struct STSampleBuffer { 60 size_t pos, size; 61 st_sample samples[]; 62 } STSampleBuffer; 63 64 typedef struct HWVoiceOut { 65 AudioState *s; 66 int enabled; 67 int poll_mode; 68 int pending_disable; 69 struct audio_pcm_info info; 70 71 f_sample *clip; 72 uint64_t ts_helper; 73 74 STSampleBuffer *mix_buf; 75 void *buf_emul; 76 size_t pos_emul, pending_emul, size_emul; 77 78 size_t samples; 79 QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head; 80 QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head; 81 struct audio_pcm_ops *pcm_ops; 82 QLIST_ENTRY (HWVoiceOut) entries; 83 } HWVoiceOut; 84 85 typedef struct HWVoiceIn { 86 AudioState *s; 87 int enabled; 88 int poll_mode; 89 struct audio_pcm_info info; 90 91 t_sample *conv; 92 93 size_t total_samples_captured; 94 uint64_t ts_helper; 95 96 STSampleBuffer *conv_buf; 97 void *buf_emul; 98 size_t pos_emul, pending_emul, size_emul; 99 100 size_t samples; 101 QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head; 102 struct audio_pcm_ops *pcm_ops; 103 QLIST_ENTRY (HWVoiceIn) entries; 104 } HWVoiceIn; 105 106 struct SWVoiceOut { 107 QEMUSoundCard *card; 108 AudioState *s; 109 struct audio_pcm_info info; 110 t_sample *conv; 111 int64_t ratio; 112 struct st_sample *buf; 113 void *rate; 114 size_t total_hw_samples_mixed; 115 int active; 116 int empty; 117 HWVoiceOut *hw; 118 char *name; 119 struct mixeng_volume vol; 120 struct audio_callback callback; 121 QLIST_ENTRY (SWVoiceOut) entries; 122 }; 123 124 struct SWVoiceIn { 125 QEMUSoundCard *card; 126 AudioState *s; 127 int active; 128 struct audio_pcm_info info; 129 int64_t ratio; 130 void *rate; 131 size_t total_hw_samples_acquired; 132 struct st_sample *buf; 133 f_sample *clip; 134 HWVoiceIn *hw; 135 char *name; 136 struct mixeng_volume vol; 137 struct audio_callback callback; 138 QLIST_ENTRY (SWVoiceIn) entries; 139 }; 140 141 typedef struct audio_driver audio_driver; 142 struct audio_driver { 143 const char *name; 144 const char *descr; 145 void *(*init) (Audiodev *); 146 void (*fini) (void *); 147 #ifdef CONFIG_GIO 148 void (*set_dbus_server) (AudioState *s, GDBusObjectManagerServer *manager); 149 #endif 150 struct audio_pcm_ops *pcm_ops; 151 int can_be_default; 152 int max_voices_out; 153 int max_voices_in; 154 int voice_size_out; 155 int voice_size_in; 156 QLIST_ENTRY(audio_driver) next; 157 }; 158 159 struct audio_pcm_ops { 160 int (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque); 161 void (*fini_out)(HWVoiceOut *hw); 162 size_t (*write) (HWVoiceOut *hw, void *buf, size_t size); 163 void (*run_buffer_out)(HWVoiceOut *hw); 164 /* 165 * Get the free output buffer size. This is an upper limit. The size 166 * returned by function get_buffer_out may be smaller. 167 */ 168 size_t (*buffer_get_free)(HWVoiceOut *hw); 169 /* 170 * get a buffer that after later can be passed to put_buffer_out; optional 171 * returns the buffer, and writes it's size to size (in bytes) 172 */ 173 void *(*get_buffer_out)(HWVoiceOut *hw, size_t *size); 174 /* 175 * put back the buffer returned by get_buffer_out; optional 176 * buf must be equal the pointer returned by get_buffer_out, 177 * size may be smaller 178 */ 179 size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size); 180 void (*enable_out)(HWVoiceOut *hw, bool enable); 181 void (*volume_out)(HWVoiceOut *hw, Volume *vol); 182 183 int (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque); 184 void (*fini_in) (HWVoiceIn *hw); 185 size_t (*read) (HWVoiceIn *hw, void *buf, size_t size); 186 void (*run_buffer_in)(HWVoiceIn *hw); 187 void *(*get_buffer_in)(HWVoiceIn *hw, size_t *size); 188 void (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size); 189 void (*enable_in)(HWVoiceIn *hw, bool enable); 190 void (*volume_in)(HWVoiceIn *hw, Volume *vol); 191 }; 192 193 void audio_generic_run_buffer_in(HWVoiceIn *hw); 194 void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size); 195 void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size); 196 void audio_generic_run_buffer_out(HWVoiceOut *hw); 197 size_t audio_generic_buffer_get_free(HWVoiceOut *hw); 198 void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size); 199 size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size); 200 size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size); 201 size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size); 202 203 struct capture_callback { 204 struct audio_capture_ops ops; 205 void *opaque; 206 QLIST_ENTRY (capture_callback) entries; 207 }; 208 209 struct CaptureVoiceOut { 210 HWVoiceOut hw; 211 void *buf; 212 QLIST_HEAD (cb_listhead, capture_callback) cb_head; 213 QLIST_ENTRY (CaptureVoiceOut) entries; 214 }; 215 216 struct SWVoiceCap { 217 SWVoiceOut sw; 218 CaptureVoiceOut *cap; 219 QLIST_ENTRY (SWVoiceCap) entries; 220 }; 221 222 typedef struct AudioState { 223 struct audio_driver *drv; 224 Audiodev *dev; 225 void *drv_opaque; 226 227 QEMUTimer *ts; 228 QLIST_HEAD (card_listhead, QEMUSoundCard) card_head; 229 QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in; 230 QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out; 231 QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head; 232 int nb_hw_voices_out; 233 int nb_hw_voices_in; 234 int vm_running; 235 int64_t period_ticks; 236 237 bool timer_running; 238 uint64_t timer_last; 239 240 QTAILQ_ENTRY(AudioState) list; 241 } AudioState; 242 243 extern const struct mixeng_volume nominal_volume; 244 245 extern const char *audio_prio_list[]; 246 247 void audio_driver_register(audio_driver *drv); 248 audio_driver *audio_driver_lookup(const char *name); 249 250 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as); 251 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len); 252 253 int audio_bug (const char *funcname, int cond); 254 void *audio_calloc (const char *funcname, int nmemb, size_t size); 255 256 void audio_run(AudioState *s, const char *msg); 257 258 const char *audio_application_name(void); 259 260 typedef struct RateCtl { 261 int64_t start_ticks; 262 int64_t bytes_sent; 263 } RateCtl; 264 265 void audio_rate_start(RateCtl *rate); 266 size_t audio_rate_peek_bytes(RateCtl *rate, struct audio_pcm_info *info); 267 void audio_rate_add_bytes(RateCtl *rate, size_t bytes_used); 268 size_t audio_rate_get_bytes(RateCtl *rate, struct audio_pcm_info *info, 269 size_t bytes_avail); 270 271 static inline size_t audio_ring_dist(size_t dst, size_t src, size_t len) 272 { 273 return (dst >= src) ? (dst - src) : (len - src + dst); 274 } 275 276 /** 277 * audio_ring_posb() - returns new position in ringbuffer in backward 278 * direction at given distance 279 * 280 * @pos: current position in ringbuffer 281 * @dist: distance in ringbuffer to walk in reverse direction 282 * @len: size of ringbuffer 283 */ 284 static inline size_t audio_ring_posb(size_t pos, size_t dist, size_t len) 285 { 286 return pos >= dist ? pos - dist : len - dist + pos; 287 } 288 289 #define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) 290 291 #ifdef DEBUG 292 #define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) 293 #else 294 #define ldebug(fmt, ...) (void)0 295 #endif 296 297 #define AUDIO_STRINGIFY_(n) #n 298 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n) 299 300 typedef struct AudiodevListEntry { 301 Audiodev *dev; 302 QSIMPLEQ_ENTRY(AudiodevListEntry) next; 303 } AudiodevListEntry; 304 305 typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead; 306 AudiodevListHead audio_handle_legacy_opts(void); 307 308 void audio_free_audiodev_list(AudiodevListHead *head); 309 310 void audio_create_pdos(Audiodev *dev); 311 AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev); 312 AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev); 313 314 #endif /* QEMU_AUDIO_INT_H */