1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
#ifndef foopulsesourceoutputhfoo
#define foopulsesourceoutputhfoo
/* $Id$ */
/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#include <inttypes.h>
typedef struct pa_source_output pa_source_output;
#include <pulse/sample.h>
#include <pulsecore/source.h>
#include <pulsecore/memblockq.h>
#include <pulsecore/resampler.h>
#include <pulsecore/module.h>
#include <pulsecore/client.h>
typedef enum pa_source_output_state {
PA_SOURCE_OUTPUT_INIT,
PA_SOURCE_OUTPUT_RUNNING,
PA_SOURCE_OUTPUT_CORKED,
PA_SOURCE_OUTPUT_UNLINKED
} pa_source_output_state_t;
static inline pa_bool_t PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_state_t x) {
return x == PA_SOURCE_OUTPUT_RUNNING || x == PA_SOURCE_OUTPUT_CORKED;
}
typedef enum pa_source_output_flags {
PA_SOURCE_OUTPUT_VARIABLE_RATE = 1,
PA_SOURCE_OUTPUT_DONT_MOVE = 2,
PA_SOURCE_OUTPUT_START_CORKED = 4,
PA_SOURCE_OUTPUT_NO_REMAP = 8,
PA_SOURCE_OUTPUT_NO_REMIX = 16,
PA_SOURCE_OUTPUT_FIX_FORMAT = 32,
PA_SOURCE_OUTPUT_FIX_RATE = 64,
PA_SOURCE_OUTPUT_FIX_CHANNELS = 128
} pa_source_output_flags_t;
struct pa_source_output {
pa_msgobject parent;
uint32_t index;
pa_core *core;
pa_source_output_state_t state;
pa_source_output_flags_t flags;
pa_proplist *proplist;
char *driver; /* may be NULL */
pa_module *module; /* may be NULL */
pa_client *client; /* may be NULL */
pa_source *source;
pa_sample_spec sample_spec;
pa_channel_map channel_map;
pa_resample_method_t resample_method;
/* Pushes a new memchunk into the output. Called from IO thread
* context. */
void (*push)(pa_source_output *o, const pa_memchunk *chunk);
/* Only relevant for monitor sources right now: called when the
* recorded stream is rewound. Called from IO context*/
void (*process_rewind)(pa_source_output *o, size_t nbytes);
/* Called whenever the maximum rewindable size of the source
* changes. Called from IO thread context. */
void (*update_max_rewind) (pa_source_output *o, size_t nbytes); /* may be NULL */
/* If non-NULL this function is called when the output is first
* connected to a source. Called from IO thread context */
void (*attach) (pa_source_output *o); /* may be NULL */
/* If non-NULL this function is called when the output is
* disconnected from its source. Called from IO thread context */
void (*detach) (pa_source_output *o); /* may be NULL */
/* If non-NULL called whenever the the source this output is attached
* to suspends or resumes. Called from main context */
void (*suspend) (pa_source_output *o, pa_bool_t b); /* may be NULL */
/* If non-NULL called whenever the the source this output is attached
* to changes. Called from main context */
void (*moved) (pa_source_output *o); /* may be NULL */
/* Supposed to unlink and destroy this stream. Called from main
* context. */
void (*kill)(pa_source_output* o); /* may be NULL */
/* Return the current latency (i.e. length of bufferd audio) of
this stream. Called from main context. If NULL a
PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY message is sent to the IO
thread instead. */
pa_usec_t (*get_latency) (pa_source_output *o); /* may be NULL */
/* If non_NULL this function is called from thread context if the
* state changes. The old state is found in thread_info.state. */
void (*state_change) (pa_source_output *o, pa_source_output_state_t state); /* may be NULL */
struct {
pa_source_output_state_t state;
pa_bool_t attached; /* True only between ->attach() and ->detach() calls */
pa_sample_spec sample_spec;
pa_resampler* resampler; /* may be NULL */
/* We maintain a delay memblockq here for source outputs that
* don't implement rewind() */
pa_memblockq *delay_memblockq;
/* The requested latency for the source */
pa_usec_t requested_source_latency;
} thread_info;
void *userdata;
};
PA_DECLARE_CLASS(pa_source_output);
#define PA_SOURCE_OUTPUT(o) pa_source_output_cast(o)
enum {
PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_SET_RATE,
PA_SOURCE_OUTPUT_MESSAGE_SET_STATE,
PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY,
PA_SOURCE_OUTPUT_MESSAGE_MAX
};
typedef struct pa_source_output_new_data {
pa_proplist *proplist;
const char *driver;
pa_module *module;
pa_client *client;
pa_source *source;
pa_sample_spec sample_spec;
pa_bool_t sample_spec_is_set;
pa_channel_map channel_map;
pa_bool_t channel_map_is_set;
pa_resample_method_t resample_method;
} pa_source_output_new_data;
pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data);
void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec);
void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map);
void pa_source_output_new_data_done(pa_source_output_new_data *data);
typedef struct pa_source_output_move_hook_data {
pa_source_output *source_output;
pa_source *destination;
} pa_source_output_move_hook_data;
/* To be called by the implementing module only */
pa_source_output* pa_source_output_new(
pa_core *core,
pa_source_output_new_data *data,
pa_source_output_flags_t flags);
void pa_source_output_put(pa_source_output *o);
void pa_source_output_unlink(pa_source_output*o);
void pa_source_output_set_name(pa_source_output *i, const char *name);
pa_usec_t pa_source_output_set_requested_latency(pa_source_output *i, pa_usec_t usec);
void pa_source_output_cork(pa_source_output *i, pa_bool_t b);
int pa_source_output_set_rate(pa_source_output *o, uint32_t rate);
/* Callable by everyone */
/* External code may request disconnection with this funcion */
void pa_source_output_kill(pa_source_output*o);
pa_usec_t pa_source_output_get_latency(pa_source_output *i);
pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o);
int pa_source_output_move_to(pa_source_output *o, pa_source *dest);
#define pa_source_output_get_state(o) ((o)->state)
pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o);
/* To be used exclusively by the source driver thread */
void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk);
void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes);
void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes);
void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state);
int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec);
#endif
|
