2 * QEMU Audio subsystem header
4 * Copyright (c) 2003-2004 Vassili Karpov (malc)
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
24 #ifndef QEMU_AUDIO_INT_H
25 #define QEMU_AUDIO_INT_H
31 typedef struct HWVoice {
54 struct SWVoice **pvoice;
55 struct pcm_ops *pcm_ops;
58 extern struct pcm_ops no_pcm_ops;
59 extern struct audio_output_driver no_output_driver;
61 extern struct pcm_ops oss_pcm_ops;
62 extern struct audio_output_driver oss_output_driver;
64 extern struct pcm_ops sdl_pcm_ops;
65 extern struct audio_output_driver sdl_output_driver;
67 extern struct pcm_ops wav_pcm_ops;
68 extern struct audio_output_driver wav_output_driver;
70 extern struct pcm_ops fmod_pcm_ops;
71 extern struct audio_output_driver fmod_output_driver;
73 struct audio_output_driver {
76 void (*fini) (void *);
77 struct pcm_ops *pcm_ops;
83 typedef struct AudioState {
89 int64_t ticks_threshold;
92 struct audio_output_driver *drv;
94 extern AudioState audio_state;
108 int bytes_per_second;
122 int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt);
123 void (*fini) (HWVoice *hw);
124 void (*run) (HWVoice *hw);
125 int (*write) (SWVoice *sw, void *buf, int size);
126 int (*ctl) (HWVoice *hw, int cmd, ...);
129 void pcm_sw_free_resources (SWVoice *sw);
130 int pcm_sw_alloc_resources (SWVoice *sw);
131 void pcm_sw_fini (SWVoice *sw);
132 int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq,
133 int nchannels, audfmt_e fmt);
135 void pcm_hw_clear (HWVoice *hw, void *buf, int len);
136 HWVoice * pcm_hw_find_any (HWVoice *hw);
137 HWVoice * pcm_hw_find_any_active (HWVoice *hw);
138 HWVoice * pcm_hw_find_any_passive (HWVoice *hw);
139 HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq,
140 int nchannels, audfmt_e fmt);
141 HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt);
142 int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw);
143 int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw);
144 SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt);
146 void pcm_hw_free_resources (HWVoice *hw);
147 int pcm_hw_alloc_resources (HWVoice *hw);
148 void pcm_hw_fini (HWVoice *hw);
149 void pcm_hw_gc (HWVoice *hw);
150 int pcm_hw_get_live (HWVoice *hw);
151 int pcm_hw_get_live2 (HWVoice *hw, int *nb_active);
152 void pcm_hw_dec_live (HWVoice *hw, int decr);
153 int pcm_hw_write (SWVoice *sw, void *buf, int len);
155 int audio_get_conf_int (const char *key, int defval);
156 const char *audio_get_conf_str (const char *key, const char *defval);
158 struct audio_output_driver;
160 #define VOICE_ENABLE 1
161 #define VOICE_DISABLE 2
163 #endif /* audio_int.h */