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1 | /* |
2 | * QEMU Audio subsystem header | |
3 | * | |
4 | * Copyright (c) 2003-2004 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_INT_H | |
25 | #define QEMU_AUDIO_INT_H | |
26 | ||
27 | #include "vl.h" | |
28 | ||
29 | struct pcm_ops; | |
30 | ||
31 | typedef struct HWVoice { | |
32 | int active; | |
33 | int enabled; | |
34 | int pending_disable; | |
35 | int valid; | |
36 | int freq; | |
37 | ||
38 | f_sample *clip; | |
39 | audfmt_e fmt; | |
40 | int nchannels; | |
41 | ||
42 | int align; | |
43 | int shift; | |
44 | ||
45 | int rpos; | |
46 | int bufsize; | |
47 | ||
48 | int bytes_per_second; | |
49 | st_sample_t *mix_buf; | |
50 | ||
51 | int samples; | |
52 | int64_t old_ticks; | |
53 | int nb_voices; | |
54 | struct SWVoice **pvoice; | |
55 | struct pcm_ops *pcm_ops; | |
56 | } HWVoice; | |
57 | ||
58 | extern struct pcm_ops oss_pcm_ops; | |
59 | extern struct audio_output_driver oss_output_driver; | |
60 | ||
61 | extern struct pcm_ops sdl_pcm_ops; | |
62 | extern struct audio_output_driver sdl_output_driver; | |
63 | ||
64 | extern struct pcm_ops wav_pcm_ops; | |
65 | extern struct audio_output_driver wav_output_driver; | |
66 | ||
67 | extern struct pcm_ops fmod_pcm_ops; | |
68 | extern struct audio_output_driver fmod_output_driver; | |
69 | ||
70 | struct audio_output_driver { | |
71 | const char *name; | |
72 | void *(*init) (void); | |
73 | void (*fini) (void *); | |
74 | struct pcm_ops *pcm_ops; | |
75 | int can_be_default; | |
76 | int max_voices; | |
77 | int voice_size; | |
78 | }; | |
79 | ||
80 | typedef struct AudioState { | |
81 | int fixed_format; | |
82 | int fixed_freq; | |
83 | int fixed_channels; | |
84 | int fixed_fmt; | |
85 | int nb_hw_voices; | |
86 | int voice_size; | |
87 | int64_t ticks_threshold; | |
88 | int freq_threshold; | |
89 | void *opaque; | |
90 | struct audio_output_driver *drv; | |
91 | } AudioState; | |
92 | extern AudioState audio_state; | |
93 | ||
94 | struct SWVoice { | |
95 | int freq; | |
96 | audfmt_e fmt; | |
97 | int nchannels; | |
98 | ||
99 | int shift; | |
100 | int align; | |
101 | ||
102 | t_sample *conv; | |
103 | ||
104 | int left; | |
105 | int pos; | |
106 | int bytes_per_second; | |
107 | int64_t ratio; | |
108 | st_sample_t *buf; | |
109 | void *rate; | |
110 | ||
111 | int wpos; | |
112 | int live; | |
113 | int active; | |
114 | int64_t old_ticks; | |
115 | HWVoice *hw; | |
116 | char *name; | |
117 | }; | |
118 | ||
119 | struct pcm_ops { | |
120 | int (*init) (HWVoice *hw, int freq, int nchannels, audfmt_e fmt); | |
121 | void (*fini) (HWVoice *hw); | |
122 | void (*run) (HWVoice *hw); | |
123 | int (*write) (SWVoice *sw, void *buf, int size); | |
124 | int (*ctl) (HWVoice *hw, int cmd, ...); | |
125 | }; | |
126 | ||
127 | void pcm_sw_free_resources (SWVoice *sw); | |
128 | int pcm_sw_alloc_resources (SWVoice *sw); | |
129 | void pcm_sw_fini (SWVoice *sw); | |
130 | int pcm_sw_init (SWVoice *sw, HWVoice *hw, int freq, | |
131 | int nchannels, audfmt_e fmt); | |
132 | ||
133 | void pcm_hw_clear (HWVoice *hw, void *buf, int len); | |
134 | HWVoice * pcm_hw_find_any (HWVoice *hw); | |
135 | HWVoice * pcm_hw_find_any_active (HWVoice *hw); | |
136 | HWVoice * pcm_hw_find_any_passive (HWVoice *hw); | |
137 | HWVoice * pcm_hw_find_specific (HWVoice *hw, int freq, | |
138 | int nchannels, audfmt_e fmt); | |
139 | HWVoice * pcm_hw_add (int freq, int nchannels, audfmt_e fmt); | |
140 | int pcm_hw_add_sw (HWVoice *hw, SWVoice *sw); | |
141 | int pcm_hw_del_sw (HWVoice *hw, SWVoice *sw); | |
142 | SWVoice * pcm_create_voice_pair (int freq, int nchannels, audfmt_e fmt); | |
143 | ||
144 | void pcm_hw_free_resources (HWVoice *hw); | |
145 | int pcm_hw_alloc_resources (HWVoice *hw); | |
146 | void pcm_hw_fini (HWVoice *hw); | |
147 | void pcm_hw_gc (HWVoice *hw); | |
148 | int pcm_hw_get_live (HWVoice *hw); | |
149 | int pcm_hw_get_live2 (HWVoice *hw, int *nb_active); | |
150 | void pcm_hw_dec_live (HWVoice *hw, int decr); | |
151 | int pcm_hw_write (SWVoice *sw, void *buf, int len); | |
152 | ||
153 | int audio_get_conf_int (const char *key, int defval); | |
154 | const char *audio_get_conf_str (const char *key, const char *defval); | |
155 | ||
156 | struct audio_output_driver; | |
157 | ||
158 | #define VOICE_ENABLE 1 | |
159 | #define VOICE_DISABLE 2 | |
160 | ||
161 | #endif /* audio_int.h */ |