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 "sys-queue.h" 29 30 typedef void (*audio_callback_fn_t) (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 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 LIST_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 AudioState *audio; 82 char *name; 83 LIST_ENTRY (QEMUSoundCard) entries; 84 } QEMUSoundCard; 85 86 typedef struct QEMUAudioTimeStamp { 87 uint64_t old_ts; 88 } QEMUAudioTimeStamp; 89 90 void AUD_vlog (const char *cap, const char *fmt, va_list ap); 91 void AUD_log (const char *cap, const char *fmt, ...) 92 #ifdef __GNUC__ 93 __attribute__ ((__format__ (__printf__, 2, 3))) 94 #endif 95 ; 96 97 AudioState *AUD_init (void); 98 void AUD_help (void); 99 void AUD_register_card (AudioState *s, const char *name, QEMUSoundCard *card); 100 void AUD_remove_card (QEMUSoundCard *card); 101 CaptureVoiceOut *AUD_add_capture ( 102 AudioState *s, 103 struct audsettings *as, 104 struct audio_capture_ops *ops, 105 void *opaque 106 ); 107 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); 108 109 SWVoiceOut *AUD_open_out ( 110 QEMUSoundCard *card, 111 SWVoiceOut *sw, 112 const char *name, 113 void *callback_opaque, 114 audio_callback_fn_t callback_fn, 115 struct audsettings *settings 116 ); 117 118 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); 119 int AUD_write (SWVoiceOut *sw, void *pcm_buf, int size); 120 int AUD_get_buffer_size_out (SWVoiceOut *sw); 121 void AUD_set_active_out (SWVoiceOut *sw, int on); 122 int AUD_is_active_out (SWVoiceOut *sw); 123 124 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 125 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 126 127 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); 128 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); 129 130 SWVoiceIn *AUD_open_in ( 131 QEMUSoundCard *card, 132 SWVoiceIn *sw, 133 const char *name, 134 void *callback_opaque, 135 audio_callback_fn_t callback_fn, 136 struct audsettings *settings 137 ); 138 139 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); 140 int AUD_read (SWVoiceIn *sw, void *pcm_buf, int size); 141 void AUD_set_active_in (SWVoiceIn *sw, int on); 142 int AUD_is_active_in (SWVoiceIn *sw); 143 144 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 145 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 146 147 static inline void *advance (void *p, int incr) 148 { 149 uint8_t *d = p; 150 return (d + incr); 151 } 152 153 uint32_t popcount (uint32_t u); 154 uint32_t lsbindex (uint32_t u); 155 156 #ifdef __GNUC__ 157 #define audio_MIN(a, b) ( __extension__ ({ \ 158 __typeof (a) ta = a; \ 159 __typeof (b) tb = b; \ 160 ((ta)>(tb)?(tb):(ta)); \ 161 })) 162 163 #define audio_MAX(a, b) ( __extension__ ({ \ 164 __typeof (a) ta = a; \ 165 __typeof (b) tb = b; \ 166 ((ta)<(tb)?(tb):(ta)); \ 167 })) 168 #else 169 #define audio_MIN(a, b) ((a)>(b)?(b):(a)) 170 #define audio_MAX(a, b) ((a)<(b)?(b):(a)) 171 #endif 172 173 int wav_start_capture (CaptureState *s, const char *path, int freq, 174 int bits, int nchannels); 175 176 #endif /* audio.h */ 177