audio/audio_int.h

   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 #ifndef QEMU_AUDIO_INT_H
  25 #define QEMU_AUDIO_INT_H
  26
  27 #ifdef CONFIG_COREAUDIO
  28 #define FLOAT_MIXENG
  29 /* #define RECIPROCAL */
  30 #endif
  31 #include "mixeng.h"
  32
  33 struct audio_pcm_ops;
  34
  35 typedef enum {
  36     AUD_OPT_INT,
  37     AUD_OPT_FMT,
  38     AUD_OPT_STR,
  39     AUD_OPT_BOOL
  40 } audio_option_tag_e;
  41
  42 struct audio_option {
  43     const char *name;
  44     audio_option_tag_e tag;
  45     void *valp;
  46     const char *descr;
  47     int *overriddenp;
  48     int overridden;
  49 };
  50
  51 struct audio_callback {
  52     void *opaque;
  53     audio_callback_fn_t fn;
  54 };
  55
  56 struct audio_pcm_info {
  57     int bits;
  58     int sign;
  59     int freq;
  60     int nchannels;
  61     int align;
  62     int shift;
  63     int bytes_per_second;
  64     int swap_endianness;
  65 };
  66
  67 typedef struct SWVoiceCap SWVoiceCap;
  68
  69 typedef struct HWVoiceOut {
  70     int enabled;
  71     int pending_disable;
  72     struct audio_pcm_info info;
  73
  74     f_sample *clip;
  75
  76     int rpos;
  77     uint64_t ts_helper;
  78
  79     struct st_sample *mix_buf;
  80
  81     int samples;
  82     LIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
  83     LIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
  84     struct audio_pcm_ops *pcm_ops;
  85     LIST_ENTRY (HWVoiceOut) entries;
  86 } HWVoiceOut;
  87
  88 typedef struct HWVoiceIn {
  89     int enabled;
  90     struct audio_pcm_info info;
  91
  92     t_sample *conv;
  93
  94     int wpos;
  95     int total_samples_captured;
  96     uint64_t ts_helper;
  97
  98     struct st_sample *conv_buf;
  99
 100     int samples;
 101     LIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
 102     struct audio_pcm_ops *pcm_ops;
 103     LIST_ENTRY (HWVoiceIn) entries;
 104 } HWVoiceIn;
 105
 106 struct SWVoiceOut {
 107     QEMUSoundCard *card;
 108     struct audio_pcm_info info;
 109     t_sample *conv;
 110     int64_t ratio;
 111     struct st_sample *buf;
 112     void *rate;
 113     int 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     LIST_ENTRY (SWVoiceOut) entries;
 121 };
 122
 123 struct SWVoiceIn {
 124     QEMUSoundCard *card;
 125     int active;
 126     struct audio_pcm_info info;
 127     int64_t ratio;
 128     void *rate;
 129     int total_hw_samples_acquired;
 130     struct st_sample *buf;
 131     f_sample *clip;
 132     HWVoiceIn *hw;
 133     char *name;
 134     struct mixeng_volume vol;
 135     struct audio_callback callback;
 136     LIST_ENTRY (SWVoiceIn) entries;
 137 };
 138
 139 struct audio_driver {
 140     const char *name;
 141     const char *descr;
 142     struct audio_option *options;
 143     void *(*init) (void);
 144     void (*fini) (void *);
 145     struct audio_pcm_ops *pcm_ops;
 146     int can_be_default;
 147     int max_voices_out;
 148     int max_voices_in;
 149     int voice_size_out;
 150     int voice_size_in;
 151 };
 152
 153 struct audio_pcm_ops {
 154     int  (*init_out)(HWVoiceOut *hw, struct audsettings *as);
 155     void (*fini_out)(HWVoiceOut *hw);
 156     int  (*run_out) (HWVoiceOut *hw);
 157     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 158     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 159
 160     int  (*init_in) (HWVoiceIn *hw, struct audsettings *as);
 161     void (*fini_in) (HWVoiceIn *hw);
 162     int  (*run_in)  (HWVoiceIn *hw);
 163     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 164     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 165 };
 166
 167 struct capture_callback {
 168     struct audio_capture_ops ops;
 169     void *opaque;
 170     LIST_ENTRY (capture_callback) entries;
 171 };
 172
 173 struct CaptureVoiceOut {
 174     HWVoiceOut hw;
 175     void *buf;
 176     LIST_HEAD (cb_listhead, capture_callback) cb_head;
 177     LIST_ENTRY (CaptureVoiceOut) entries;
 178 };
 179
 180 struct SWVoiceCap {
 181     SWVoiceOut sw;
 182     CaptureVoiceOut *cap;
 183     LIST_ENTRY (SWVoiceCap) entries;
 184 };
 185
 186 struct AudioState {
 187     struct audio_driver *drv;
 188     void *drv_opaque;
 189
 190     QEMUTimer *ts;
 191     LIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 192     LIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 193     LIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 194     LIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 195     int nb_hw_voices_out;
 196     int nb_hw_voices_in;
 197     int vm_running;
 198 };
 199
 200 extern struct audio_driver no_audio_driver;
 201 extern struct audio_driver oss_audio_driver;
 202 extern struct audio_driver sdl_audio_driver;
 203 extern struct audio_driver wav_audio_driver;
 204 extern struct audio_driver fmod_audio_driver;
 205 extern struct audio_driver alsa_audio_driver;
 206 extern struct audio_driver coreaudio_audio_driver;
 207 extern struct audio_driver dsound_audio_driver;
 208 extern struct audio_driver esd_audio_driver;
 209 extern struct audio_driver pa_audio_driver;
 210 extern struct mixeng_volume nominal_volume;
 211
 212 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 213 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 214
 215 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 216 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 217
 218 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 219 int  audio_pcm_hw_get_live_out (HWVoiceOut *hw);
 220 int  audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);
 221
 222 int audio_bug (const char *funcname, int cond);
 223 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 224
 225 #define VOICE_ENABLE 1
 226 #define VOICE_DISABLE 2
 227
 228 static inline int audio_ring_dist (int dst, int src, int len)
 229 {
 230     return (dst >= src) ? (dst - src) : (len - src + dst);
 231 }
 232
 233 #if defined __GNUC__
 234 #define GCC_ATTR __attribute__ ((__unused__, __format__ (__printf__, 1, 2)))
 235 #define INIT_FIELD(f) . f
 236 #define GCC_FMT_ATTR(n, m) __attribute__ ((__format__ (__printf__, n, m)))
 237 #else
 238 #define GCC_ATTR /**/
 239 #define INIT_FIELD(f) /**/
 240 #define GCC_FMT_ATTR(n, m)
 241 #endif
 242
 243 static void GCC_ATTR dolog (const char *fmt, ...)
 244 {
 245     va_list ap;
 246
 247     va_start (ap, fmt);
 248     AUD_vlog (AUDIO_CAP, fmt, ap);
 249     va_end (ap);
 250 }
 251
 252 #ifdef DEBUG
 253 static void GCC_ATTR ldebug (const char *fmt, ...)
 254 {
 255     va_list ap;
 256
 257     va_start (ap, fmt);
 258     AUD_vlog (AUDIO_CAP, fmt, ap);
 259     va_end (ap);
 260 }
 261 #else
 262 #if defined NDEBUG && defined __GNUC__
 263 #define ldebug(...)
 264 #elif defined NDEBUG && defined _MSC_VER
 265 #define ldebug __noop
 266 #else
 267 static void GCC_ATTR ldebug (const char *fmt, ...)
 268 {
 269     (void) fmt;
 270 }
 271 #endif
 272 #endif
 273
 274 #undef GCC_ATTR
 275
 276 #define AUDIO_STRINGIFY_(n) #n
 277 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 278
 279 #if defined _MSC_VER || defined __GNUC__
 280 #define AUDIO_FUNC __FUNCTION__
 281 #else
 282 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
 283 #endif
 284
 285 #endif /* audio_int.h */