LiVES  2.4.6
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pulse.h
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1 // pulse.h
2 // LiVES (lives-exe)
3 // (c) G. Finch 2005 - 2012
4 // Released under the GPL 3 or later
5 // see file ../COPYING for licensing details
6 
7 #ifdef HAVE_PULSE_AUDIO
8 
9 #include <pulse/context.h>
10 #include <pulse/thread-mainloop.h>
11 #include <pulse/introspect.h>
12 #include <pulse/stream.h>
13 #include <pulse/proplist.h>
14 #include <pulse/error.h>
15 
16 #define PULSE_MAX_OUTPUT_CHANS PA_CHANNEL_POSITION_MAX
17 
18 #define LIVES_PA_BUFF_MAXLEN 16384
19 #define LIVES_PA_BUFF_TARGET 1024
20 #define LIVES_PA_BUFF_FRAGSIZE 1024
21 
22 typedef struct {
23  size_t size;
24  size_t max_size;
25  void *data;
26 } audio_buffer_t;
27 
28 
29 typedef struct {
30  pa_threaded_mainloop *mloop;
31  pa_context *con;
32  pa_stream *pstream;
33  pa_proplist *pa_props;
34 
35  pa_usec_t usec_start;
36 
37  int str_idx;
38 
39  pa_context_state_t state;
40 
41  // app side
42  int64_t in_arate;
43  uint64_t in_achans;
44  uint64_t in_asamps;
45 
46  // server side
47  int64_t out_arate;
48  uint64_t out_achans;
49  uint64_t out_asamps;
50 
51  uint64_t out_chans_available;
52 
53  int in_signed;
54  int in_endian;
55 
56  int out_signed;
57  int out_endian;
58 
59  uint64_t num_calls;
61  audio_buffer_t *aPlayPtr;
62  lives_audio_loop_t loop;
63 
64  uint8_t *sound_buffer;
65 
66  float volume[PULSE_MAX_OUTPUT_CHANS];
67 
68  boolean in_use;
69  boolean mute;
70 
72  volatile aserver_message_t *msgq;
73 
74  volatile uint64_t frames_written;
75 
76  boolean is_paused;
77 
78  volatile int64_t audio_ticks;
79 
80  int fd;
81  boolean is_opening;
82  volatile off_t seek_pos;
83  off_t seek_end;
84  boolean usigned;
85  boolean reverse_endian;
86 
87  lives_whentostop_t *whentostop;
88  volatile lives_cancel_t *cancelled;
89 
90  /* variables used for trying to restart the connection to pulse */
91  boolean pulsed_died;
92  struct timeval last_reconnect_attempt;
93 
94  boolean is_output;
95 
96  int playing_file;
97 
98  lives_audio_buf_t **abufs;
99  volatile int read_abuf;
100 
101  uint64_t chunk_size;
102 
103  volatile int astream_fd;
104 
105 } pulse_driver_t;
106 
107 
108 
109 // TODO - rationalise names
110 
111 boolean lives_pulse_init(short startup_phase);
112 
113 int pulse_audio_init(void);
114 int pulse_audio_read_init(void); // ditto
115 
116 pulse_driver_t *pulse_get_driver(boolean is_output);
117 
118 int pulse_driver_activate(pulse_driver_t *);
119 void pulse_close_client(pulse_driver_t *);
120 
121 void pulse_shutdown(void);
122 
123 void pulse_aud_pb_ready(int fileno);
124 
125 size_t pulse_flush_read_data(pulse_driver_t *, int fileno, size_t rbytes, boolean rev_endian, void *data);
126 
127 void pulse_driver_uncork(pulse_driver_t *);
128 
129 boolean pulse_try_reconnect(void);
130 
131 // utils
132 volatile aserver_message_t *pulse_get_msgq(pulse_driver_t *);
133 
134 int64_t pulse_audio_seek_bytes(pulse_driver_t *, int64_t bytes);
135 
136 int64_t lives_pulse_get_time(pulse_driver_t *, boolean absolute);
137 
138 double lives_pulse_get_pos(pulse_driver_t *);
139 
140 
142 
143 boolean pulse_audio_seek_frame(pulse_driver_t *, int frame);
144 
145 void pulse_get_rec_avals(pulse_driver_t *);
146 
147 
148 
149 #endif
lives_audio_loop_t
Definition: audio.h:143
Definition: audio.h:77
lives_whentostop_t
which stream end should cause playback to finish ?
Definition: main.h:369
Definition: audio.h:59
lives_cancel_t
cancel reason
Definition: main.h:377