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 *buffer; 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 STSampleBuffer resample_buf; 112 void *rate; 113 size_t total_hw_samples_mixed; 114 int active; 115 int empty; 116 HWVoiceOut *hw; 117 char *name; 118 struct mixeng_volume vol; 119 struct audio_callback callback; 120 QLIST_ENTRY (SWVoiceOut) entries; 121 }; 122 123 struct SWVoiceIn { 124 QEMUSoundCard *card; 125 AudioState *s; 126 int active; 127 struct audio_pcm_info info; 128 void *rate; 129 size_t total_hw_samples_acquired; 130 STSampleBuffer resample_buf; 131 f_sample *clip; 132 HWVoiceIn *hw; 133 char *name; 134 struct mixeng_volume vol; 135 struct audio_callback callback; 136 QLIST_ENTRY (SWVoiceIn) entries; 137 }; 138 139 typedef struct audio_driver audio_driver; 140 struct audio_driver { 141 const char *name; 142 const char *descr; 143 void *(*init) (Audiodev *, Error **); 144 void (*fini) (void *); 145 #ifdef CONFIG_GIO 146 void (*set_dbus_server) (AudioState *s, GDBusObjectManagerServer *manager, bool p2p); 147 #endif 148 struct audio_pcm_ops *pcm_ops; 149 int max_voices_out; 150 int max_voices_in; 151 size_t voice_size_out; 152 size_t voice_size_in; 153 QLIST_ENTRY(audio_driver) next; 154 }; 155 156 struct audio_pcm_ops { 157 int (*init_out)(HWVoiceOut *hw, audsettings *as, void *drv_opaque); 158 void (*fini_out)(HWVoiceOut *hw); 159 size_t (*write) (HWVoiceOut *hw, void *buf, size_t size); 160 void (*run_buffer_out)(HWVoiceOut *hw); 161 /* 162 * Get the free output buffer size. This is an upper limit. The size 163 * returned by function get_buffer_out may be smaller. 164 */ 165 size_t (*buffer_get_free)(HWVoiceOut *hw); 166 /* 167 * get a buffer that after later can be passed to put_buffer_out; optional 168 * returns the buffer, and writes it's size to size (in bytes) 169 */ 170 void *(*get_buffer_out)(HWVoiceOut *hw, size_t *size); 171 /* 172 * put back the buffer returned by get_buffer_out; optional 173 * buf must be equal the pointer returned by get_buffer_out, 174 * size may be smaller 175 */ 176 size_t (*put_buffer_out)(HWVoiceOut *hw, void *buf, size_t size); 177 void (*enable_out)(HWVoiceOut *hw, bool enable); 178 void (*volume_out)(HWVoiceOut *hw, Volume *vol); 179 180 int (*init_in) (HWVoiceIn *hw, audsettings *as, void *drv_opaque); 181 void (*fini_in) (HWVoiceIn *hw); 182 size_t (*read) (HWVoiceIn *hw, void *buf, size_t size); 183 void (*run_buffer_in)(HWVoiceIn *hw); 184 void *(*get_buffer_in)(HWVoiceIn *hw, size_t *size); 185 void (*put_buffer_in)(HWVoiceIn *hw, void *buf, size_t size); 186 void (*enable_in)(HWVoiceIn *hw, bool enable); 187 void (*volume_in)(HWVoiceIn *hw, Volume *vol); 188 }; 189 190 void audio_generic_run_buffer_in(HWVoiceIn *hw); 191 void *audio_generic_get_buffer_in(HWVoiceIn *hw, size_t *size); 192 void audio_generic_put_buffer_in(HWVoiceIn *hw, void *buf, size_t size); 193 void audio_generic_run_buffer_out(HWVoiceOut *hw); 194 size_t audio_generic_buffer_get_free(HWVoiceOut *hw); 195 void *audio_generic_get_buffer_out(HWVoiceOut *hw, size_t *size); 196 size_t audio_generic_put_buffer_out(HWVoiceOut *hw, void *buf, size_t size); 197 size_t audio_generic_write(HWVoiceOut *hw, void *buf, size_t size); 198 size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size); 199 200 struct capture_callback { 201 struct audio_capture_ops ops; 202 void *opaque; 203 QLIST_ENTRY (capture_callback) entries; 204 }; 205 206 struct CaptureVoiceOut { 207 HWVoiceOut hw; 208 void *buf; 209 QLIST_HEAD (cb_listhead, capture_callback) cb_head; 210 QLIST_ENTRY (CaptureVoiceOut) entries; 211 }; 212 213 struct SWVoiceCap { 214 SWVoiceOut sw; 215 CaptureVoiceOut *cap; 216 QLIST_ENTRY (SWVoiceCap) entries; 217 }; 218 219 typedef struct AudioState { 220 struct audio_driver *drv; 221 Audiodev *dev; 222 void *drv_opaque; 223 224 QEMUTimer *ts; 225 QLIST_HEAD (card_listhead, QEMUSoundCard) card_head; 226 QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in; 227 QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out; 228 QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head; 229 int nb_hw_voices_out; 230 int nb_hw_voices_in; 231 int vm_running; 232 int64_t period_ticks; 233 234 bool timer_running; 235 uint64_t timer_last; 236 237 QTAILQ_ENTRY(AudioState) list; 238 } AudioState; 239 240 extern const struct mixeng_volume nominal_volume; 241 242 extern const char *audio_prio_list[]; 243 244 void audio_driver_register(audio_driver *drv); 245 246 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as); 247 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len); 248 249 int audio_bug (const char *funcname, int cond); 250 251 void audio_run(AudioState *s, const char *msg); 252 253 const char *audio_application_name(void); 254 255 typedef struct RateCtl { 256 int64_t start_ticks; 257 int64_t bytes_sent; 258 } RateCtl; 259 260 void audio_rate_start(RateCtl *rate); 261 size_t audio_rate_peek_bytes(RateCtl *rate, struct audio_pcm_info *info); 262 void audio_rate_add_bytes(RateCtl *rate, size_t bytes_used); 263 size_t audio_rate_get_bytes(RateCtl *rate, struct audio_pcm_info *info, 264 size_t bytes_avail); 265 266 static inline size_t audio_ring_dist(size_t dst, size_t src, size_t len) 267 { 268 return (dst >= src) ? (dst - src) : (len - src + dst); 269 } 270 271 /** 272 * audio_ring_posb() - returns new position in ringbuffer in backward 273 * direction at given distance 274 * 275 * @pos: current position in ringbuffer 276 * @dist: distance in ringbuffer to walk in reverse direction 277 * @len: size of ringbuffer 278 */ 279 static inline size_t audio_ring_posb(size_t pos, size_t dist, size_t len) 280 { 281 return pos >= dist ? pos - dist : len - dist + pos; 282 } 283 284 #define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) 285 286 #ifdef DEBUG 287 #define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__) 288 #else 289 #define ldebug(fmt, ...) (void)0 290 #endif 291 292 typedef struct AudiodevListEntry { 293 Audiodev *dev; 294 QSIMPLEQ_ENTRY(AudiodevListEntry) next; 295 } AudiodevListEntry; 296 297 typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead; 298 299 void audio_create_pdos(Audiodev *dev); 300 AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev); 301 AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev); 302 303 #endif /* QEMU_AUDIO_INT_H */ 304