Root/
1 | #ifndef __PCM_PLUGIN_H |
2 | #define __PCM_PLUGIN_H |
3 | |
4 | /* |
5 | * Digital Audio (Plugin interface) abstract layer |
6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
7 | * |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify |
10 | * it under the terms of the GNU General Public License as published by |
11 | * the Free Software Foundation; either version 2 of the License, or |
12 | * (at your option) any later version. |
13 | * |
14 | * This program is distributed in the hope that it will be useful, |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
17 | * GNU General Public License for more details. |
18 | * |
19 | * You should have received a copy of the GNU General Public License |
20 | * along with this program; if not, write to the Free Software |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
22 | * |
23 | */ |
24 | |
25 | #ifdef CONFIG_SND_PCM_OSS_PLUGINS |
26 | |
27 | #define snd_pcm_plug_stream(plug) ((plug)->stream) |
28 | |
29 | enum snd_pcm_plugin_action { |
30 | INIT = 0, |
31 | PREPARE = 1, |
32 | }; |
33 | |
34 | struct snd_pcm_channel_area { |
35 | void *addr; /* base address of channel samples */ |
36 | unsigned int first; /* offset to first sample in bits */ |
37 | unsigned int step; /* samples distance in bits */ |
38 | }; |
39 | |
40 | struct snd_pcm_plugin_channel { |
41 | void *aptr; /* pointer to the allocated area */ |
42 | struct snd_pcm_channel_area area; |
43 | snd_pcm_uframes_t frames; /* allocated frames */ |
44 | unsigned int enabled:1; /* channel need to be processed */ |
45 | unsigned int wanted:1; /* channel is wanted */ |
46 | }; |
47 | |
48 | struct snd_pcm_plugin_format { |
49 | snd_pcm_format_t format; |
50 | unsigned int rate; |
51 | unsigned int channels; |
52 | }; |
53 | |
54 | struct snd_pcm_plugin { |
55 | const char *name; /* plug-in name */ |
56 | int stream; |
57 | struct snd_pcm_plugin_format src_format; /* source format */ |
58 | struct snd_pcm_plugin_format dst_format; /* destination format */ |
59 | int src_width; /* sample width in bits */ |
60 | int dst_width; /* sample width in bits */ |
61 | snd_pcm_access_t access; |
62 | snd_pcm_sframes_t (*src_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t dst_frames); |
63 | snd_pcm_sframes_t (*dst_frames)(struct snd_pcm_plugin *plugin, snd_pcm_uframes_t src_frames); |
64 | snd_pcm_sframes_t (*client_channels)(struct snd_pcm_plugin *plugin, |
65 | snd_pcm_uframes_t frames, |
66 | struct snd_pcm_plugin_channel **channels); |
67 | snd_pcm_sframes_t (*transfer)(struct snd_pcm_plugin *plugin, |
68 | const struct snd_pcm_plugin_channel *src_channels, |
69 | struct snd_pcm_plugin_channel *dst_channels, |
70 | snd_pcm_uframes_t frames); |
71 | int (*action)(struct snd_pcm_plugin *plugin, |
72 | enum snd_pcm_plugin_action action, |
73 | unsigned long data); |
74 | struct snd_pcm_plugin *prev; |
75 | struct snd_pcm_plugin *next; |
76 | struct snd_pcm_substream *plug; |
77 | void *private_data; |
78 | void (*private_free)(struct snd_pcm_plugin *plugin); |
79 | char *buf; |
80 | snd_pcm_uframes_t buf_frames; |
81 | struct snd_pcm_plugin_channel *buf_channels; |
82 | char extra_data[0]; |
83 | }; |
84 | |
85 | int snd_pcm_plugin_build(struct snd_pcm_substream *handle, |
86 | const char *name, |
87 | struct snd_pcm_plugin_format *src_format, |
88 | struct snd_pcm_plugin_format *dst_format, |
89 | size_t extra, |
90 | struct snd_pcm_plugin **ret); |
91 | int snd_pcm_plugin_free(struct snd_pcm_plugin *plugin); |
92 | int snd_pcm_plugin_clear(struct snd_pcm_plugin **first); |
93 | int snd_pcm_plug_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t frames); |
94 | snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size); |
95 | snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size); |
96 | |
97 | #define FULL ROUTE_PLUGIN_RESOLUTION |
98 | #define HALF ROUTE_PLUGIN_RESOLUTION / 2 |
99 | |
100 | int snd_pcm_plugin_build_io(struct snd_pcm_substream *handle, |
101 | struct snd_pcm_hw_params *params, |
102 | struct snd_pcm_plugin **r_plugin); |
103 | int snd_pcm_plugin_build_linear(struct snd_pcm_substream *handle, |
104 | struct snd_pcm_plugin_format *src_format, |
105 | struct snd_pcm_plugin_format *dst_format, |
106 | struct snd_pcm_plugin **r_plugin); |
107 | int snd_pcm_plugin_build_mulaw(struct snd_pcm_substream *handle, |
108 | struct snd_pcm_plugin_format *src_format, |
109 | struct snd_pcm_plugin_format *dst_format, |
110 | struct snd_pcm_plugin **r_plugin); |
111 | int snd_pcm_plugin_build_rate(struct snd_pcm_substream *handle, |
112 | struct snd_pcm_plugin_format *src_format, |
113 | struct snd_pcm_plugin_format *dst_format, |
114 | struct snd_pcm_plugin **r_plugin); |
115 | int snd_pcm_plugin_build_route(struct snd_pcm_substream *handle, |
116 | struct snd_pcm_plugin_format *src_format, |
117 | struct snd_pcm_plugin_format *dst_format, |
118 | struct snd_pcm_plugin **r_plugin); |
119 | int snd_pcm_plugin_build_copy(struct snd_pcm_substream *handle, |
120 | struct snd_pcm_plugin_format *src_format, |
121 | struct snd_pcm_plugin_format *dst_format, |
122 | struct snd_pcm_plugin **r_plugin); |
123 | |
124 | int snd_pcm_plug_format_plugins(struct snd_pcm_substream *substream, |
125 | struct snd_pcm_hw_params *params, |
126 | struct snd_pcm_hw_params *slave_params); |
127 | |
128 | snd_pcm_format_t snd_pcm_plug_slave_format(snd_pcm_format_t format, |
129 | struct snd_mask *format_mask); |
130 | |
131 | int snd_pcm_plugin_append(struct snd_pcm_plugin *plugin); |
132 | |
133 | snd_pcm_sframes_t snd_pcm_plug_write_transfer(struct snd_pcm_substream *handle, |
134 | struct snd_pcm_plugin_channel *src_channels, |
135 | snd_pcm_uframes_t size); |
136 | snd_pcm_sframes_t snd_pcm_plug_read_transfer(struct snd_pcm_substream *handle, |
137 | struct snd_pcm_plugin_channel *dst_channels_final, |
138 | snd_pcm_uframes_t size); |
139 | |
140 | snd_pcm_sframes_t snd_pcm_plug_client_channels_buf(struct snd_pcm_substream *handle, |
141 | char *buf, snd_pcm_uframes_t count, |
142 | struct snd_pcm_plugin_channel **channels); |
143 | |
144 | snd_pcm_sframes_t snd_pcm_plugin_client_channels(struct snd_pcm_plugin *plugin, |
145 | snd_pcm_uframes_t frames, |
146 | struct snd_pcm_plugin_channel **channels); |
147 | |
148 | int snd_pcm_area_silence(const struct snd_pcm_channel_area *dst_channel, |
149 | size_t dst_offset, |
150 | size_t samples, snd_pcm_format_t format); |
151 | int snd_pcm_area_copy(const struct snd_pcm_channel_area *src_channel, |
152 | size_t src_offset, |
153 | const struct snd_pcm_channel_area *dst_channel, |
154 | size_t dst_offset, |
155 | size_t samples, snd_pcm_format_t format); |
156 | |
157 | void *snd_pcm_plug_buf_alloc(struct snd_pcm_substream *plug, snd_pcm_uframes_t size); |
158 | void snd_pcm_plug_buf_unlock(struct snd_pcm_substream *plug, void *ptr); |
159 | snd_pcm_sframes_t snd_pcm_oss_write3(struct snd_pcm_substream *substream, |
160 | const char *ptr, snd_pcm_uframes_t size, |
161 | int in_kernel); |
162 | snd_pcm_sframes_t snd_pcm_oss_read3(struct snd_pcm_substream *substream, |
163 | char *ptr, snd_pcm_uframes_t size, int in_kernel); |
164 | snd_pcm_sframes_t snd_pcm_oss_writev3(struct snd_pcm_substream *substream, |
165 | void **bufs, snd_pcm_uframes_t frames, |
166 | int in_kernel); |
167 | snd_pcm_sframes_t snd_pcm_oss_readv3(struct snd_pcm_substream *substream, |
168 | void **bufs, snd_pcm_uframes_t frames, |
169 | int in_kernel); |
170 | |
171 | #else |
172 | |
173 | static inline snd_pcm_sframes_t snd_pcm_plug_client_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t drv_size) { return drv_size; } |
174 | static inline snd_pcm_sframes_t snd_pcm_plug_slave_size(struct snd_pcm_substream *handle, snd_pcm_uframes_t clt_size) { return clt_size; } |
175 | static inline int snd_pcm_plug_slave_format(int format, struct snd_mask *format_mask) { return format; } |
176 | |
177 | #endif |
178 | |
179 | #ifdef PLUGIN_DEBUG |
180 | #define pdprintf(fmt, args...) printk(KERN_DEBUG "plugin: " fmt, ##args) |
181 | #else |
182 | #define pdprintf(fmt, args...) |
183 | #endif |
184 | |
185 | #endif /* __PCM_PLUGIN_H */ |
186 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9