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 "config-host.h" 28 #include "qemu/queue.h" 29 30 typedef void (*audio_callback_fn) (void *opaque, int avail); 31 32 typedef enum { 33 AUD_FMT_U8, 34 AUD_FMT_S8, 35 AUD_FMT_U16, 36 AUD_FMT_S16, 37 AUD_FMT_U32, 38 AUD_FMT_S32 39 } audfmt_e; 40 41 #ifdef HOST_WORDS_BIGENDIAN 42 #define AUDIO_HOST_ENDIANNESS 1 43 #else 44 #define AUDIO_HOST_ENDIANNESS 0 45 #endif 46 47 struct audsettings { 48 int freq; 49 int nchannels; 50 audfmt_e fmt; 51 int endianness; 52 }; 53 54 typedef enum { 55 AUD_CNOTIFY_ENABLE, 56 AUD_CNOTIFY_DISABLE 57 } audcnotification_e; 58 59 struct audio_capture_ops { 60 void (*notify) (void *opaque, audcnotification_e cmd); 61 void (*capture) (void *opaque, void *buf, int size); 62 void (*destroy) (void *opaque); 63 }; 64 65 struct capture_ops { 66 void (*info) (void *opaque); 67 void (*destroy) (void *opaque); 68 }; 69 70 typedef struct CaptureState { 71 void *opaque; 72 struct capture_ops ops; 73 QLIST_ENTRY (CaptureState) entries; 74 } CaptureState; 75 76 typedef struct SWVoiceOut SWVoiceOut; 77 typedef struct CaptureVoiceOut CaptureVoiceOut; 78 typedef struct SWVoiceIn SWVoiceIn; 79 80 typedef struct QEMUSoundCard { 81 char *name; 82 QLIST_ENTRY (QEMUSoundCard) entries; 83 } QEMUSoundCard; 84 85 typedef struct QEMUAudioTimeStamp { 86 uint64_t old_ts; 87 } QEMUAudioTimeStamp; 88 89 void AUD_vlog (const char *cap, const char *fmt, va_list ap) GCC_FMT_ATTR(2, 0); 90 void AUD_log (const char *cap, const char *fmt, ...) GCC_FMT_ATTR(2, 3); 91 92 void AUD_help (void); 93 void AUD_register_card (const char *name, QEMUSoundCard *card); 94 void AUD_remove_card (QEMUSoundCard *card); 95 CaptureVoiceOut *AUD_add_capture ( 96 struct audsettings *as, 97 struct audio_capture_ops *ops, 98 void *opaque 99 ); 100 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); 101 102 SWVoiceOut *AUD_open_out ( 103 QEMUSoundCard *card, 104 SWVoiceOut *sw, 105 const char *name, 106 void *callback_opaque, 107 audio_callback_fn callback_fn, 108 struct audsettings *settings 109 ); 110 111 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); 112 int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size); 113 int AUD_get_buffer_size_out (SWVoiceOut *sw); 114 void AUD_set_active_out (SWVoiceOut *sw, int on); 115 int AUD_is_active_out (SWVoiceOut *sw); 116 117 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 118 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 119 120 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); 121 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); 122 123 SWVoiceIn *AUD_open_in ( 124 QEMUSoundCard *card, 125 SWVoiceIn *sw, 126 const char *name, 127 void *callback_opaque, 128 audio_callback_fn callback_fn, 129 struct audsettings *settings 130 ); 131 132 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); 133 int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size); 134 void AUD_set_active_in (SWVoiceIn *sw, int on); 135 int AUD_is_active_in (SWVoiceIn *sw); 136 137 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 138 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 139 140 static inline void *advance (void *p, int incr) 141 { 142 uint8_t *d = p; 143 return (d + incr); 144 } 145 146 #ifdef __GNUC__ 147 #define audio_MIN(a, b) ( __extension__ ({ \ 148 __typeof (a) ta = a; \ 149 __typeof (b) tb = b; \ 150 ((ta)>(tb)?(tb):(ta)); \ 151 })) 152 153 #define audio_MAX(a, b) ( __extension__ ({ \ 154 __typeof (a) ta = a; \ 155 __typeof (b) tb = b; \ 156 ((ta)<(tb)?(tb):(ta)); \ 157 })) 158 #else 159 #define audio_MIN(a, b) ((a)>(b)?(b):(a)) 160 #define audio_MAX(a, b) ((a)<(b)?(b):(a)) 161 #endif 162 163 int wav_start_capture (CaptureState *s, const char *path, int freq, 164 int bits, int nchannels); 165 166 #endif /* audio.h */ 167