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
  25 #ifndef QEMU_AUDIO_INT_H
  26 #define QEMU_AUDIO_INT_H
  27
  28 #ifdef CONFIG_AUDIO_COREAUDIO
  29 #define FLOAT_MIXENG
  30 /* #define RECIPROCAL */
  31 #endif
  32 #include "mixeng.h"
  33
  34 struct audio_pcm_ops;
  35
  36 struct audio_callback {
  37     void *opaque;
  38     audio_callback_fn fn;
  39 };
  40
  41 struct audio_pcm_info {
  42     int bits;
  43     int sign;
  44     int freq;
  45     int nchannels;
  46     int align;
  47     int shift;
  48     int bytes_per_second;
  49     int swap_endianness;
  50 };
  51
  52 typedef struct SWVoiceCap SWVoiceCap;
  53
  54 typedef struct HWVoiceOut {
  55     int enabled;
  56     int poll_mode;
  57     int pending_disable;
  58     struct audio_pcm_info info;
  59
  60     f_sample *clip;
  61
  62     int rpos;
  63     uint64_t ts_helper;
  64
  65     struct st_sample *mix_buf;
  66
  67     int samples;
  68     QLIST_HEAD (sw_out_listhead, SWVoiceOut) sw_head;
  69     QLIST_HEAD (sw_cap_listhead, SWVoiceCap) cap_head;
  70     int ctl_caps;
  71     struct audio_pcm_ops *pcm_ops;
  72     QLIST_ENTRY (HWVoiceOut) entries;
  73 } HWVoiceOut;
  74
  75 typedef struct HWVoiceIn {
  76     int enabled;
  77     int poll_mode;
  78     struct audio_pcm_info info;
  79
  80     t_sample *conv;
  81
  82     int wpos;
  83     int total_samples_captured;
  84     uint64_t ts_helper;
  85
  86     struct st_sample *conv_buf;
  87
  88     int samples;
  89     QLIST_HEAD (sw_in_listhead, SWVoiceIn) sw_head;
  90     int ctl_caps;
  91     struct audio_pcm_ops *pcm_ops;
  92     QLIST_ENTRY (HWVoiceIn) entries;
  93 } HWVoiceIn;
  94
  95 struct SWVoiceOut {
  96     QEMUSoundCard *card;
  97     struct audio_pcm_info info;
  98     t_sample *conv;
  99     int64_t ratio;
 100     struct st_sample *buf;
 101     void *rate;
 102     int total_hw_samples_mixed;
 103     int active;
 104     int empty;
 105     HWVoiceOut *hw;
 106     char *name;
 107     struct mixeng_volume vol;
 108     struct audio_callback callback;
 109     QLIST_ENTRY (SWVoiceOut) entries;
 110 };
 111
 112 struct SWVoiceIn {
 113     QEMUSoundCard *card;
 114     int active;
 115     struct audio_pcm_info info;
 116     int64_t ratio;
 117     void *rate;
 118     int total_hw_samples_acquired;
 119     struct st_sample *buf;
 120     f_sample *clip;
 121     HWVoiceIn *hw;
 122     char *name;
 123     struct mixeng_volume vol;
 124     struct audio_callback callback;
 125     QLIST_ENTRY (SWVoiceIn) entries;
 126 };
 127
 128 typedef struct audio_driver audio_driver;
 129 struct audio_driver {
 130     const char *name;
 131     const char *descr;
 132     void *(*init) (Audiodev *);
 133     void (*fini) (void *);
 134     struct audio_pcm_ops *pcm_ops;
 135     int can_be_default;
 136     int max_voices_out;
 137     int max_voices_in;
 138     int voice_size_out;
 139     int voice_size_in;
 140     int ctl_caps;
 141     QLIST_ENTRY(audio_driver) next;
 142 };
 143
 144 struct audio_pcm_ops {
 145     int  (*init_out)(HWVoiceOut *hw, struct audsettings *as, void *drv_opaque);
 146     void (*fini_out)(HWVoiceOut *hw);
 147     int  (*run_out) (HWVoiceOut *hw, int live);
 148     int  (*write)   (SWVoiceOut *sw, void *buf, int size);
 149     int  (*ctl_out) (HWVoiceOut *hw, int cmd, ...);
 150
 151     int  (*init_in) (HWVoiceIn *hw, struct audsettings *as, void *drv_opaque);
 152     void (*fini_in) (HWVoiceIn *hw);
 153     int  (*run_in)  (HWVoiceIn *hw);
 154     int  (*read)    (SWVoiceIn *sw, void *buf, int size);
 155     int  (*ctl_in)  (HWVoiceIn *hw, int cmd, ...);
 156 };
 157
 158 struct capture_callback {
 159     struct audio_capture_ops ops;
 160     void *opaque;
 161     QLIST_ENTRY (capture_callback) entries;
 162 };
 163
 164 struct CaptureVoiceOut {
 165     HWVoiceOut hw;
 166     void *buf;
 167     QLIST_HEAD (cb_listhead, capture_callback) cb_head;
 168     QLIST_ENTRY (CaptureVoiceOut) entries;
 169 };
 170
 171 struct SWVoiceCap {
 172     SWVoiceOut sw;
 173     CaptureVoiceOut *cap;
 174     QLIST_ENTRY (SWVoiceCap) entries;
 175 };
 176
 177 typedef struct AudioState {
 178     struct audio_driver *drv;
 179     Audiodev *dev;
 180     void *drv_opaque;
 181
 182     QEMUTimer *ts;
 183     QLIST_HEAD (card_listhead, QEMUSoundCard) card_head;
 184     QLIST_HEAD (hw_in_listhead, HWVoiceIn) hw_head_in;
 185     QLIST_HEAD (hw_out_listhead, HWVoiceOut) hw_head_out;
 186     QLIST_HEAD (cap_listhead, CaptureVoiceOut) cap_head;
 187     int nb_hw_voices_out;
 188     int nb_hw_voices_in;
 189     int vm_running;
 190     int64_t period_ticks;
 191 } AudioState;
 192
 193 extern const struct mixeng_volume nominal_volume;
 194
 195 extern const char *audio_prio_list[];
 196
 197 void audio_driver_register(audio_driver *drv);
 198 audio_driver *audio_driver_lookup(const char *name);
 199
 200 void audio_pcm_init_info (struct audio_pcm_info *info, struct audsettings *as);
 201 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 202
 203 int  audio_pcm_sw_write (SWVoiceOut *sw, void *buf, int len);
 204 int  audio_pcm_hw_get_live_in (HWVoiceIn *hw);
 205
 206 int  audio_pcm_sw_read (SWVoiceIn *sw, void *buf, int len);
 207
 208 int audio_pcm_hw_clip_out (HWVoiceOut *hw, void *pcm_buf,
 209                            int live, int pending);
 210
 211 int audio_bug (const char *funcname, int cond);
 212 void *audio_calloc (const char *funcname, int nmemb, size_t size);
 213
 214 void audio_run (const char *msg);
 215
 216 #define VOICE_ENABLE 1
 217 #define VOICE_DISABLE 2
 218 #define VOICE_VOLUME 3
 219
 220 #define VOICE_VOLUME_CAP (1 << VOICE_VOLUME)
 221
 222 static inline int audio_ring_dist (int dst, int src, int len)
 223 {
 224     return (dst >= src) ? (dst - src) : (len - src + dst);
 225 }
 226
 227 #define dolog(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 228
 229 #ifdef DEBUG
 230 #define ldebug(fmt, ...) AUD_log(AUDIO_CAP, fmt, ## __VA_ARGS__)
 231 #else
 232 #define ldebug(fmt, ...) (void)0
 233 #endif
 234
 235 #define AUDIO_STRINGIFY_(n) #n
 236 #define AUDIO_STRINGIFY(n) AUDIO_STRINGIFY_(n)
 237
 238 typedef struct AudiodevListEntry {
 239     Audiodev *dev;
 240     QSIMPLEQ_ENTRY(AudiodevListEntry) next;
 241 } AudiodevListEntry;
 242
 243 typedef QSIMPLEQ_HEAD(, AudiodevListEntry) AudiodevListHead;
 244 AudiodevListHead audio_handle_legacy_opts(void);
 245
 246 void audio_free_audiodev_list(AudiodevListHead *head);
 247
 248 void audio_create_pdos(Audiodev *dev);
 249 AudiodevPerDirectionOptions *audio_get_pdo_in(Audiodev *dev);
 250 AudiodevPerDirectionOptions *audio_get_pdo_out(Audiodev *dev);
 251
 252 #endif /* QEMU_AUDIO_INT_H */