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 *overridenp;
  48     int overriden;
  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_endian;
  65 };
  66
  67 typedef struct HWVoiceOut {
  68     int enabled;
  69     int pending_disable;
  70     int valid;
  71     struct audio_pcm_info info;
  72
  73     f_sample *clip;
  74
  75     int rpos;
  76     uint64_t ts_helper;
  77
  78     st_sample_t *mix_buf;
  79
  80     int samples;
  81     LIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
  82     struct audio_pcm_ops *pcm_ops;
  83     LIST_ENTRY (HWVoiceOut) entries;
  84 } HWVoiceOut;
  85
  86 typedef struct HWVoiceIn {
  87     int enabled;
  88     struct audio_pcm_info info;
  89
  90     t_sample *conv;
  91
  92     int wpos;
  93     int total_samples_captured;
  94     uint64_t ts_helper;
  95
  96     st_sample_t *conv_buf;
  97
  98     int samples;
  99     LIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
 100     struct audio_pcm_ops *pcm_ops;
 101     LIST_ENTRY (HWVoiceIn) entries;
 102 } HWVoiceIn;
 103
 104 struct SWVoiceOut {
 105     struct audio_pcm_info info;
 106     t_sample *conv;
 107     int64_t ratio;
 108     st_sample_t *buf;
 109     void *rate;
 110     int total_hw_samples_mixed;
 111     int active;
 112     int empty;
 113     HWVoiceOut *hw;
 114     char *name;
 115     volume_t vol;
 116     struct audio_callback callback;
 117     LIST_ENTRY (SWVoiceOut) entries;
 118 };
 119
 120 struct SWVoiceIn {
 121     int active;
 122     struct audio_pcm_info info;
 123     int64_t ratio;
 124     void *rate;
 125     int total_hw_samples_acquired;
 126     st_sample_t *conv_buf;
 127     f_sample *clip;
 128     HWVoiceIn *hw;
 129     char *name;
 130     volume_t vol;
 131     struct audio_callback callback;
 132     LIST_ENTRY (SWVoiceIn) entries;
 133 };
 134
 135 struct audio_driver {
 136     const char *name;
 137     const char *descr;
 138     struct audio_option *options;
 139     void *(*init) (void);
 140     void (*fini) (void *);
 141     struct audio_pcm_ops *pcm_ops;
 142     int can_be_default;
 143     int max_voices_out;
 144     int max_voices_in;
 145     int voice_size_out;
 146     int voice_size_in;
 147 };
 148
 149 struct audio_pcm_ops {
 150     int  (*init_out)(HWVoiceOut *hw, audsettings_t *as);
 151     void (*fini_out)(HWVoiceOut *hw);
 152     int  (*run_out) (HWVoiceOut *hw);
 153     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 154     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 155
 156     int  (*init_in) (HWVoiceIn *hw, audsettings_t *as);
 157     void (*fini_in) (HWVoiceIn *hw);
 158     int  (*run_in)  (HWVoiceIn *hw);
 159     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 160     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 161 };
 162
 163 struct AudioState {
 164     struct audio_driver *drv;
 165     void *drv_opaque;
 166
 167     QEMUTimer *ts;
 168     LIST_HEAD (card_head, QEMUSoundCard) card_head;
 169     LIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 170     LIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 171     int nb_hw_voices_out;
 172     int nb_hw_voices_in;
 173 };
 174
 175 extern struct audio_driver no_audio_driver;
 176 extern struct audio_driver oss_audio_driver;
 177 extern struct audio_driver sdl_audio_driver;
 178 extern struct audio_driver wav_audio_driver;
 179 extern struct audio_driver fmod_audio_driver;
 180 extern struct audio_driver alsa_audio_driver;
 181 extern struct audio_driver coreaudio_audio_driver;
 182 extern struct audio_driver dsound_audio_driver;
 183 extern volume_t nominal_volume;
 184
 185 void audio_pcm_init_info (struct audio_pcm_info *info, audsettings_t *as,
 186                           int swap_endian);
 187 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 188
 189 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 190 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 191
 192 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 193 int  audio_pcm_hw_get_live_out (HWVoiceOut *hw);
 194 int  audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);
 195
 196 int audio_bug (const char *funcname, int cond);
 197 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 198
 199 #define VOICE_ENABLE 1
 200 #define VOICE_DISABLE 2
 201
 202 static inline int audio_ring_dist (int dst, int src, int len)
 203 {
 204     return (dst >= src) ? (dst - src) : (len - src + dst);
 205 }
 206
 207 static inline int audio_need_to_swap_endian (int endianness)
 208 {
 209 #ifdef WORDS_BIGENDIAN
 210     return endianness != 1;
 211 #else
 212     return endianness != 0;
 213 #endif
 214 }
 215
 216 #if defined __GNUC__
 217 #define GCC_ATTR __attribute__ ((__unused__, __format__ (__printf__, 1, 2)))
 218 #define INIT_FIELD(f) . f
 219 #define GCC_FMT_ATTR(n, m) __attribute__ ((__format__ (__printf__, n, m)))
 220 #else
 221 #define GCC_ATTR /**/
 222 #define INIT_FIELD(f) /**/
 223 #define GCC_FMT_ATTR(n, m)
 224 #endif
 225
 226 static void GCC_ATTR dolog (const char *fmt, ...)
 227 {
 228     va_list ap;
 229
 230     va_start (ap, fmt);
 231     AUD_vlog (AUDIO_CAP, fmt, ap);
 232     va_end (ap);
 233 }
 234
 235 #ifdef DEBUG
 236 static void GCC_ATTR ldebug (const char *fmt, ...)
 237 {
 238     va_list ap;
 239
 240     va_start (ap, fmt);
 241     AUD_vlog (AUDIO_CAP, fmt, ap);
 242     va_end (ap);
 243 }
 244 #else
 245 #if defined NDEBUG && defined __GNUC__
 246 #define ldebug(...)
 247 #elif defined NDEBUG && defined _MSC_VER
 248 #define ldebug __noop
 249 #else
 250 static void GCC_ATTR ldebug (const char *fmt, ...)
 251 {
 252     (void) fmt;
 253 }
 254 #endif
 255 #endif
 256
 257 #undef GCC_ATTR
 258
 259 #define AUDIO_STRINGIFY_(n) #n
 260 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 261
 262 #if defined _MSC_VER || defined __GNUC__
 263 #define AUDIO_FUNC __FUNCTION__
 264 #else
 265 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
 266 #endif
 267
 268 #endif /* audio_int.h */