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 poll_mode;
  72     int pending_disable;
  73     struct audio_pcm_info info;
  74
  75     f_sample *clip;
  76
  77     int rpos;
  78     uint64_t ts_helper;
  79
  80     struct st_sample *mix_buf;
  81
  82     int samples;
  83     QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
  84     QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
  85     struct audio_pcm_ops *pcm_ops;
  86     QLIST_ENTRY (HWVoiceOut) entries;
  87 } HWVoiceOut;
  88
  89 typedef struct HWVoiceIn {
  90     int enabled;
  91     int poll_mode;
  92     struct audio_pcm_info info;
  93
  94     t_sample *conv;
  95
  96     int wpos;
  97     int total_samples_captured;
  98     uint64_t ts_helper;
  99
 100     struct st_sample *conv_buf;
 101
 102     int samples;
 103     QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
 104     struct audio_pcm_ops *pcm_ops;
 105     QLIST_ENTRY (HWVoiceIn) entries;
 106 } HWVoiceIn;
 107
 108 struct SWVoiceOut {
 109     QEMUSoundCard *card;
 110     struct audio_pcm_info info;
 111     t_sample *conv;
 112     int64_t ratio;
 113     struct st_sample *buf;
 114     void *rate;
 115     int total_hw_samples_mixed;
 116     int active;
 117     int empty;
 118     HWVoiceOut *hw;
 119     char *name;
 120     struct mixeng_volume vol;
 121     struct audio_callback callback;
 122     QLIST_ENTRY (SWVoiceOut) entries;
 123 };
 124
 125 struct SWVoiceIn {
 126     QEMUSoundCard *card;
 127     int active;
 128     struct audio_pcm_info info;
 129     int64_t ratio;
 130     void *rate;
 131     int 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 struct audio_driver {
 142     const char *name;
 143     const char *descr;
 144     struct audio_option *options;
 145     void *(*init) (void);
 146     void (*fini) (void *);
 147     struct audio_pcm_ops *pcm_ops;
 148     int can_be_default;
 149     int max_voices_out;
 150     int max_voices_in;
 151     int voice_size_out;
 152     int voice_size_in;
 153 };
 154
 155 struct audio_pcm_ops {
 156     int  (*init_out)(HWVoiceOut *hw, struct audsettings *as);
 157     void (*fini_out)(HWVoiceOut *hw);
 158     int  (*run_out) (HWVoiceOut *hw, int live);
 159     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 160     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 161
 162     int  (*init_in) (HWVoiceIn *hw, struct audsettings *as);
 163     void (*fini_in) (HWVoiceIn *hw);
 164     int  (*run_in)  (HWVoiceIn *hw);
 165     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 166     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 167 };
 168
 169 struct capture_callback {
 170     struct audio_capture_ops ops;
 171     void *opaque;
 172     QLIST_ENTRY (capture_callback) entries;
 173 };
 174
 175 struct CaptureVoiceOut {
 176     HWVoiceOut hw;
 177     void *buf;
 178     QLIST_HEAD (cb_listhead, capture_callback) cb_head;
 179     QLIST_ENTRY (CaptureVoiceOut) entries;
 180 };
 181
 182 struct SWVoiceCap {
 183     SWVoiceOut sw;
 184     CaptureVoiceOut *cap;
 185     QLIST_ENTRY (SWVoiceCap) entries;
 186 };
 187
 188 struct AudioState {
 189     struct audio_driver *drv;
 190     void *drv_opaque;
 191
 192     QEMUTimer *ts;
 193     QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 194     QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 195     QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 196     QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 197     int nb_hw_voices_out;
 198     int nb_hw_voices_in;
 199     int vm_running;
 200 };
 201
 202 extern struct audio_driver no_audio_driver;
 203 extern struct audio_driver oss_audio_driver;
 204 extern struct audio_driver sdl_audio_driver;
 205 extern struct audio_driver wav_audio_driver;
 206 extern struct audio_driver fmod_audio_driver;
 207 extern struct audio_driver alsa_audio_driver;
 208 extern struct audio_driver coreaudio_audio_driver;
 209 extern struct audio_driver dsound_audio_driver;
 210 extern struct audio_driver esd_audio_driver;
 211 extern struct audio_driver pa_audio_driver;
 212 extern struct mixeng_volume nominal_volume;
 213
 214 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 215 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 216
 217 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 218 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 219
 220 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 221
 222 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 223                            int live, int pending);
 224
 225 int audio_bug (const char *funcname, int cond);
 226 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 227
 228 void audio_run (const char *msg);
 229
 230 #define VOICE_ENABLE 1
 231 #define VOICE_DISABLE 2
 232
 233 static inline int audio_ring_dist (int dst, int src, int len)
 234 {
 235     return (dst >= src) ? (dst - src) : (len - src + dst);
 236 }
 237
 238 #if defined __GNUC__
 239 #define GCC_ATTR __attribute__ ((__unused__, __format__ (__printf__, 1, 2)))
 240 #define GCC_FMT_ATTR(n, m) __attribute__ ((__format__ (__printf__, n, m)))
 241 #else
 242 #define GCC_ATTR /**/
 243 #define GCC_FMT_ATTR(n, m)
 244 #endif
 245
 246 static void GCC_ATTR dolog (const char *fmt, ...)
 247 {
 248     va_list ap;
 249
 250     va_start (ap, fmt);
 251     AUD_vlog (AUDIO_CAP, fmt, ap);
 252     va_end (ap);
 253 }
 254
 255 #ifdef DEBUG
 256 static void GCC_ATTR ldebug (const char *fmt, ...)
 257 {
 258     va_list ap;
 259
 260     va_start (ap, fmt);
 261     AUD_vlog (AUDIO_CAP, fmt, ap);
 262     va_end (ap);
 263 }
 264 #else
 265 #if defined NDEBUG && defined __GNUC__
 266 #define ldebug(...)
 267 #elif defined NDEBUG && defined _MSC_VER
 268 #define ldebug __noop
 269 #else
 270 static void GCC_ATTR ldebug (const char *fmt, ...)
 271 {
 272     (void) fmt;
 273 }
 274 #endif
 275 #endif
 276
 277 #undef GCC_ATTR
 278
 279 #define AUDIO_STRINGIFY_(n) #n
 280 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 281
 282 #if defined _MSC_VER || defined __GNUC__
 283 #define AUDIO_FUNC __FUNCTION__
 284 #else
 285 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
 286 #endif
 287
 288 #endif /* audio_int.h */