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_H 25 #define QEMU_AUDIO_H 26 27 #include "qemu/queue.h" 28 29 typedef void (*audio_callback_fn) (void *opaque, int avail); 30 31 typedef enum { 32 AUD_FMT_U8, 33 AUD_FMT_S8, 34 AUD_FMT_U16, 35 AUD_FMT_S16, 36 AUD_FMT_U32, 37 AUD_FMT_S32 38 } audfmt_e; 39 40 #ifdef HOST_WORDS_BIGENDIAN 41 #define AUDIO_HOST_ENDIANNESS 1 42 #else 43 #define AUDIO_HOST_ENDIANNESS 0 44 #endif 45 46 struct audsettings { 47 int freq; 48 int nchannels; 49 audfmt_e fmt; 50 int endianness; 51 }; 52 53 typedef enum { 54 AUD_CNOTIFY_ENABLE, 55 AUD_CNOTIFY_DISABLE 56 } audcnotification_e; 57 58 struct audio_capture_ops { 59 void (*notify) (void *opaque, audcnotification_e cmd); 60 void (*capture) (void *opaque, void *buf, int size); 61 void (*destroy) (void *opaque); 62 }; 63 64 struct capture_ops { 65 void (*info) (void *opaque); 66 void (*destroy) (void *opaque); 67 }; 68 69 typedef struct CaptureState { 70 void *opaque; 71 struct capture_ops ops; 72 QLIST_ENTRY (CaptureState) entries; 73 } CaptureState; 74 75 typedef struct SWVoiceOut SWVoiceOut; 76 typedef struct CaptureVoiceOut CaptureVoiceOut; 77 typedef struct SWVoiceIn SWVoiceIn; 78 79 typedef struct QEMUSoundCard { 80 char *name; 81 QLIST_ENTRY (QEMUSoundCard) entries; 82 } QEMUSoundCard; 83 84 typedef struct QEMUAudioTimeStamp { 85 uint64_t old_ts; 86 } QEMUAudioTimeStamp; 87 88 void AUD_vlog (const char *cap, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); 89 void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3); 90 91 void AUD_help (void); 92 void AUD_register_card (const char *name, QEMUSoundCard *card); 93 void AUD_remove_card (QEMUSoundCard *card); 94 CaptureVoiceOut *AUD_add_capture ( 95 struct audsettings *as, 96 struct audio_capture_ops *ops, 97 void *opaque 98 ); 99 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); 100 101 SWVoiceOut *AUD_open_out ( 102 QEMUSoundCard *card, 103 SWVoiceOut *sw, 104 const char *name, 105 void *callback_opaque, 106 audio_callback_fn callback_fn, 107 struct audsettings *settings 108 ); 109 110 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); 111 int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size); 112 int AUD_get_buffer_size_out (SWVoiceOut *sw); 113 void AUD_set_active_out (SWVoiceOut *sw, int on); 114 int AUD_is_active_out (SWVoiceOut *sw); 115 116 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 117 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 118 119 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); 120 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); 121 122 SWVoiceIn *AUD_open_in ( 123 QEMUSoundCard *card, 124 SWVoiceIn *sw, 125 const char *name, 126 void *callback_opaque, 127 audio_callback_fn callback_fn, 128 struct audsettings *settings 129 ); 130 131 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); 132 int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size); 133 void AUD_set_active_in (SWVoiceIn *sw, int on); 134 int AUD_is_active_in (SWVoiceIn *sw); 135 136 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 137 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 138 139 static inline void *advance (void *p, int incr) 140 { 141 uint8_t *d = p; 142 return (d + incr); 143 } 144 145 #ifdef __GNUC__ 146 #define audio_MIN(a, b) ( __extension__ ({ \ 147 __typeof (a) ta = a; \ 148 __typeof (b) tb = b; \ 149 ((ta)>(tb)?(tb):(ta)); \ 150 })) 151 152 #define audio_MAX(a, b) ( __extension__ ({ \ 153 __typeof (a) ta = a; \ 154 __typeof (b) tb = b; \ 155 ((ta)<(tb)?(tb):(ta)); \ 156 })) 157 #else 158 #define audio_MIN(a, b) ((a)>(b)?(b):(a)) 159 #define audio_MAX(a, b) ((a)<(b)?(b):(a)) 160 #endif 161 162 int wav_start_capture (CaptureState *s, const char *path, int freq, 163 int bits, int nchannels); 164 165 #endif /* audio.h */ 166