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     st_sample_t *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     st_sample_t *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     struct audio_pcm_info info;
 108     t_sample *conv;
 109     int64_t ratio;
 110     st_sample_t *buf;
 111     void *rate;
 112     int total_hw_samples_mixed;
 113     int active;
 114     int empty;
 115     HWVoiceOut *hw;
 116     char *name;
 117     volume_t vol;
 118     struct audio_callback callback;
 119     LIST_ENTRY (SWVoiceOut) entries;
 120 };
 121
 122 struct SWVoiceIn {
 123     int active;
 124     struct audio_pcm_info info;
 125     int64_t ratio;
 126     void *rate;
 127     int total_hw_samples_acquired;
 128     st_sample_t *buf;
 129     f_sample *clip;
 130     HWVoiceIn *hw;
 131     char *name;
 132     volume_t vol;
 133     struct audio_callback callback;
 134     LIST_ENTRY (SWVoiceIn) entries;
 135 };
 136
 137 struct audio_driver {
 138     const char *name;
 139     const char *descr;
 140     struct audio_option *options;
 141     void *(*init) (void);
 142     void (*fini) (void *);
 143     struct audio_pcm_ops *pcm_ops;
 144     int can_be_default;
 145     int max_voices_out;
 146     int max_voices_in;
 147     int voice_size_out;
 148     int voice_size_in;
 149 };
 150
 151 struct audio_pcm_ops {
 152     int  (*init_out)(HWVoiceOut *hw, audsettings_t *as);
 153     void (*fini_out)(HWVoiceOut *hw);
 154     int  (*run_out) (HWVoiceOut *hw);
 155     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 156     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 157
 158     int  (*init_in) (HWVoiceIn *hw, audsettings_t *as);
 159     void (*fini_in) (HWVoiceIn *hw);
 160     int  (*run_in)  (HWVoiceIn *hw);
 161     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 162     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 163 };
 164
 165 struct capture_callback {
 166     struct audio_capture_ops ops;
 167     void *opaque;
 168     LIST_ENTRY (capture_callback) entries;
 169 };
 170
 171 struct CaptureVoiceOut {
 172     HWVoiceOut hw;
 173     void *buf;
 174     LIST_HEAD (cb_listhead, capture_callback) cb_head;
 175     LIST_ENTRY (CaptureVoiceOut) entries;
 176 };
 177
 178 struct SWVoiceCap {
 179     SWVoiceOut sw;
 180     CaptureVoiceOut *cap;
 181     LIST_ENTRY (SWVoiceCap) entries;
 182 };
 183
 184 struct AudioState {
 185     struct audio_driver *drv;
 186     void *drv_opaque;
 187
 188     QEMUTimer *ts;
 189     LIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 190     LIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 191     LIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 192     LIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 193     int nb_hw_voices_out;
 194     int nb_hw_voices_in;
 195 };
 196
 197 extern struct audio_driver no_audio_driver;
 198 extern struct audio_driver oss_audio_driver;
 199 extern struct audio_driver sdl_audio_driver;
 200 extern struct audio_driver wav_audio_driver;
 201 extern struct audio_driver fmod_audio_driver;
 202 extern struct audio_driver alsa_audio_driver;
 203 extern struct audio_driver coreaudio_audio_driver;
 204 extern struct audio_driver dsound_audio_driver;
 205 extern volume_t nominal_volume;
 206
 207 void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as);
 208 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 209
 210 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 211 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 212
 213 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 214 int  audio_pcm_hw_get_live_out (HWVoiceOut *hw);
 215 int  audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);
 216
 217 int audio_bug (const char *funcname, int cond);
 218 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 219
 220 #define VOICE_ENABLE 1
 221 #define VOICE_DISABLE 2
 222
 223 static inline int audio_ring_dist (int dst, int src, int len)
 224 {
 225     return (dst >= src) ? (dst - src) : (len - src + dst);
 226 }
 227
 228 #if defined __GNUC__
 229 #define GCC_ATTR __attribute__ ((__unused__, __format__ (__printf__, 1, 2)))
 230 #define INIT_FIELD(f) . f
 231 #define GCC_FMT_ATTR(n, m) __attribute__ ((__format__ (__printf__, n, m)))
 232 #else
 233 #define GCC_ATTR /**/
 234 #define INIT_FIELD(f) /**/
 235 #define GCC_FMT_ATTR(n, m)
 236 #endif
 237
 238 static void GCC_ATTR dolog (const char *fmt, ...)
 239 {
 240     va_list ap;
 241
 242     va_start (ap, fmt);
 243     AUD_vlog (AUDIO_CAP, fmt, ap);
 244     va_end (ap);
 245 }
 246
 247 #ifdef DEBUG
 248 static void GCC_ATTR ldebug (const char *fmt, ...)
 249 {
 250     va_list ap;
 251
 252     va_start (ap, fmt);
 253     AUD_vlog (AUDIO_CAP, fmt, ap);
 254     va_end (ap);
 255 }
 256 #else
 257 #if defined NDEBUG && defined __GNUC__
 258 #define ldebug(...)
 259 #elif defined NDEBUG && defined _MSC_VER
 260 #define ldebug __noop
 261 #else
 262 static void GCC_ATTR ldebug (const char *fmt, ...)
 263 {
 264     (void) fmt;
 265 }
 266 #endif
 267 #endif
 268
 269 #undef GCC_ATTR
 270
 271 #define AUDIO_STRINGIFY_(n) #n
 272 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 273
 274 #if defined _MSC_VER || defined __GNUC__
 275 #define AUDIO_FUNC __FUNCTION__
 276 #else
 277 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
 278 #endif
 279
 280 #endif /* audio_int.h */