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 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     int ctl_caps;
  86     struct audio_pcm_ops *pcm_ops;
  87     QLIST_ENTRY (HWVoiceOut) entries;
  88 } HWVoiceOut;
  89
  90 typedef struct HWVoiceIn {
  91     int enabled;
  92     int poll_mode;
  93     struct audio_pcm_info info;
  94
  95     t_sample *conv;
  96
  97     int wpos;
  98     int total_samples_captured;
  99     uint64_t ts_helper;
 100
 101     struct st_sample *conv_buf;
 102
 103     int samples;
 104     QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
 105     int ctl_caps;
 106     struct audio_pcm_ops *pcm_ops;
 107     QLIST_ENTRY (HWVoiceIn) entries;
 108 } HWVoiceIn;
 109
 110 struct SWVoiceOut {
 111     QEMUSoundCard *card;
 112     struct audio_pcm_info info;
 113     t_sample *conv;
 114     int64_t ratio;
 115     struct st_sample *buf;
 116     void *rate;
 117     int total_hw_samples_mixed;
 118     int active;
 119     int empty;
 120     HWVoiceOut *hw;
 121     char *name;
 122     struct mixeng_volume vol;
 123     struct audio_callback callback;
 124     QLIST_ENTRY (SWVoiceOut) entries;
 125 };
 126
 127 struct SWVoiceIn {
 128     QEMUSoundCard *card;
 129     int active;
 130     struct audio_pcm_info info;
 131     int64_t ratio;
 132     void *rate;
 133     int total_hw_samples_acquired;
 134     struct st_sample *buf;
 135     f_sample *clip;
 136     HWVoiceIn *hw;
 137     char *name;
 138     struct mixeng_volume vol;
 139     struct audio_callback callback;
 140     QLIST_ENTRY (SWVoiceIn) entries;
 141 };
 142
 143 struct audio_driver {
 144     const char *name;
 145     const char *descr;
 146     struct audio_option *options;
 147     void *(*init) (void);
 148     void (*fini) (void *);
 149     struct audio_pcm_ops *pcm_ops;
 150     int can_be_default;
 151     int max_voices_out;
 152     int max_voices_in;
 153     int voice_size_out;
 154     int voice_size_in;
 155     int ctl_caps;
 156 };
 157
 158 struct audio_pcm_ops {
 159     int  (*init_out)(HWVoiceOut *hw, struct audsettings *as, void *drv_opaque);
 160     void (*fini_out)(HWVoiceOut *hw);
 161     int  (*run_out) (HWVoiceOut *hw, int live);
 162     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 163     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 164
 165     int  (*init_in) (HWVoiceIn *hw, struct audsettings *as, void *drv_opaque);
 166     void (*fini_in) (HWVoiceIn *hw);
 167     int  (*run_in)  (HWVoiceIn *hw);
 168     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 169     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 170 };
 171
 172 struct capture_callback {
 173     struct audio_capture_ops ops;
 174     void *opaque;
 175     QLIST_ENTRY (capture_callback) entries;
 176 };
 177
 178 struct CaptureVoiceOut {
 179     HWVoiceOut hw;
 180     void *buf;
 181     QLIST_HEAD (cb_listhead, capture_callback) cb_head;
 182     QLIST_ENTRY (CaptureVoiceOut) entries;
 183 };
 184
 185 struct SWVoiceCap {
 186     SWVoiceOut sw;
 187     CaptureVoiceOut *cap;
 188     QLIST_ENTRY (SWVoiceCap) entries;
 189 };
 190
 191 struct AudioState {
 192     struct audio_driver *drv;
 193     void *drv_opaque;
 194
 195     QEMUTimer *ts;
 196     QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 197     QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 198     QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 199     QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 200     int nb_hw_voices_out;
 201     int nb_hw_voices_in;
 202     int vm_running;
 203 };
 204
 205 extern struct audio_driver no_audio_driver;
 206 extern struct audio_driver oss_audio_driver;
 207 extern struct audio_driver sdl_audio_driver;
 208 extern struct audio_driver wav_audio_driver;
 209 extern struct audio_driver alsa_audio_driver;
 210 extern struct audio_driver coreaudio_audio_driver;
 211 extern struct audio_driver dsound_audio_driver;
 212 extern struct audio_driver pa_audio_driver;
 213 extern struct audio_driver spice_audio_driver;
 214 extern const struct mixeng_volume nominal_volume;
 215
 216 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 217 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 218
 219 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 220 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 221
 222 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 223
 224 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 225                            int live, int pending);
 226
 227 int audio_bug (const char *funcname, int cond);
 228 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 229
 230 void audio_run (const char *msg);
 231
 232 #define VOICE_ENABLE 1
 233 #define VOICE_DISABLE 2
 234 #define VOICE_VOLUME 3
 235
 236 #define VOICE_VOLUME_CAP (1 << VOICE_VOLUME)
 237
 238 static inline int audio_ring_dist (int dst, int src, int len)
 239 {
 240     return (dst >= src) ? (dst - src) : (len - src + dst);
 241 }
 242
 243 #define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 244
 245 #ifdef DEBUG
 246 #define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 247 #else
 248 #define ldebug(fmt, ...) (void)0
 249 #endif
 250
 251 #define AUDIO_STRINGIFY_(n) #n
 252 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 253
 254 #if defined _MSC_VER || defined __GNUC__
 255 #define AUDIO_FUNC __FUNCTION__
 256 #else
 257 #define AUDIO_FUNC __FILE__ ":" AUDIO_STRINGIFY (__LINE__)
 258 #endif
 259
 260 #endif /* audio_int.h */