audio.h (5867B)
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_H 26 #define QEMU_AUDIO_H 27 28 #include "qemu/queue.h" 29 #include "qapi/qapi-types-audio.h" 30 #include "hw/qdev-properties.h" 31 #include "hw/qdev-properties-system.h" 32 33 typedef void (*audio_callback_fn) (void *opaque, int avail); 34 35 #if HOST_BIG_ENDIAN 36 #define AUDIO_HOST_ENDIANNESS 1 37 #else 38 #define AUDIO_HOST_ENDIANNESS 0 39 #endif 40 41 typedef struct audsettings { 42 int freq; 43 int nchannels; 44 AudioFormat fmt; 45 int endianness; 46 } audsettings; 47 48 audsettings audiodev_to_audsettings(AudiodevPerDirectionOptions *pdo); 49 int audioformat_bytes_per_sample(AudioFormat fmt); 50 int audio_buffer_frames(AudiodevPerDirectionOptions *pdo, 51 audsettings *as, int def_usecs); 52 int audio_buffer_samples(AudiodevPerDirectionOptions *pdo, 53 audsettings *as, int def_usecs); 54 int audio_buffer_bytes(AudiodevPerDirectionOptions *pdo, 55 audsettings *as, int def_usecs); 56 57 typedef enum { 58 AUD_CNOTIFY_ENABLE, 59 AUD_CNOTIFY_DISABLE 60 } audcnotification_e; 61 62 struct audio_capture_ops { 63 void (*notify) (void *opaque, audcnotification_e cmd); 64 void (*capture) (void *opaque, const void *buf, int size); 65 void (*destroy) (void *opaque); 66 }; 67 68 struct capture_ops { 69 void (*info) (void *opaque); 70 void (*destroy) (void *opaque); 71 }; 72 73 typedef struct CaptureState { 74 void *opaque; 75 struct capture_ops ops; 76 QLIST_ENTRY (CaptureState) entries; 77 } CaptureState; 78 79 typedef struct SWVoiceOut SWVoiceOut; 80 typedef struct CaptureVoiceOut CaptureVoiceOut; 81 typedef struct SWVoiceIn SWVoiceIn; 82 83 typedef struct AudioState AudioState; 84 typedef struct QEMUSoundCard { 85 char *name; 86 AudioState *state; 87 QLIST_ENTRY (QEMUSoundCard) entries; 88 } QEMUSoundCard; 89 90 typedef struct QEMUAudioTimeStamp { 91 uint64_t old_ts; 92 } QEMUAudioTimeStamp; 93 94 void AUD_vlog (const char *cap, const char *fmt, va_list ap) G_GNUC_PRINTF(2, 0); 95 void AUD_log (const char *cap, const char *fmt, ...) G_GNUC_PRINTF(2, 3); 96 97 void AUD_register_card (const char *name, QEMUSoundCard *card); 98 void AUD_remove_card (QEMUSoundCard *card); 99 CaptureVoiceOut *AUD_add_capture( 100 AudioState *s, 101 struct audsettings *as, 102 struct audio_capture_ops *ops, 103 void *opaque 104 ); 105 void AUD_del_capture (CaptureVoiceOut *cap, void *cb_opaque); 106 107 SWVoiceOut *AUD_open_out ( 108 QEMUSoundCard *card, 109 SWVoiceOut *sw, 110 const char *name, 111 void *callback_opaque, 112 audio_callback_fn callback_fn, 113 struct audsettings *settings 114 ); 115 116 void AUD_close_out (QEMUSoundCard *card, SWVoiceOut *sw); 117 size_t AUD_write (SWVoiceOut *sw, void *pcm_buf, size_t size); 118 int AUD_get_buffer_size_out (SWVoiceOut *sw); 119 void AUD_set_active_out (SWVoiceOut *sw, int on); 120 int AUD_is_active_out (SWVoiceOut *sw); 121 122 void AUD_init_time_stamp_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 123 uint64_t AUD_get_elapsed_usec_out (SWVoiceOut *sw, QEMUAudioTimeStamp *ts); 124 125 void AUD_set_volume_out (SWVoiceOut *sw, int mute, uint8_t lvol, uint8_t rvol); 126 void AUD_set_volume_in (SWVoiceIn *sw, int mute, uint8_t lvol, uint8_t rvol); 127 128 #define AUDIO_MAX_CHANNELS 16 129 typedef struct Volume { 130 bool mute; 131 int channels; 132 uint8_t vol[AUDIO_MAX_CHANNELS]; 133 } Volume; 134 135 void audio_set_volume_out(SWVoiceOut *sw, Volume *vol); 136 void audio_set_volume_in(SWVoiceIn *sw, Volume *vol); 137 138 SWVoiceIn *AUD_open_in ( 139 QEMUSoundCard *card, 140 SWVoiceIn *sw, 141 const char *name, 142 void *callback_opaque, 143 audio_callback_fn callback_fn, 144 struct audsettings *settings 145 ); 146 147 void AUD_close_in (QEMUSoundCard *card, SWVoiceIn *sw); 148 size_t AUD_read (SWVoiceIn *sw, void *pcm_buf, size_t size); 149 void AUD_set_active_in (SWVoiceIn *sw, int on); 150 int AUD_is_active_in (SWVoiceIn *sw); 151 152 void AUD_init_time_stamp_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 153 uint64_t AUD_get_elapsed_usec_in (SWVoiceIn *sw, QEMUAudioTimeStamp *ts); 154 155 static inline void *advance (void *p, int incr) 156 { 157 uint8_t *d = p; 158 return (d + incr); 159 } 160 161 int wav_start_capture(AudioState *state, CaptureState *s, const char *path, 162 int freq, int bits, int nchannels); 163 164 void audio_cleanup(void); 165 166 void audio_sample_to_uint64(const void *samples, int pos, 167 uint64_t *left, uint64_t *right); 168 void audio_sample_from_uint64(void *samples, int pos, 169 uint64_t left, uint64_t right); 170 171 void audio_define(Audiodev *audio); 172 void audio_parse_option(const char *opt); 173 bool audio_init_audiodevs(void); 174 void audio_help(void); 175 void audio_legacy_help(void); 176 177 AudioState *audio_state_by_name(const char *name); 178 const char *audio_get_id(QEMUSoundCard *card); 179 180 #define DEFINE_AUDIO_PROPERTIES(_s, _f) \ 181 DEFINE_PROP_AUDIODEV("audiodev", _s, _f) 182 183 #endif /* QEMU_AUDIO_H */