code.delx.au - pulseaudio/blob - src/pulsecore/source.h

   1 #ifndef foopulsesourcehfoo
   2 #define foopulsesourcehfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
  11
  12   PulseAudio is free software; you can redistribute it and/or modify
  13   it under the terms of the GNU Lesser General Public License as published
  14   by the Free Software Foundation; either version 2 of the License,
  15   or (at your option) any later version.
  16
  17   PulseAudio is distributed in the hope that it will be useful, but
  18   WITHOUT ANY WARRANTY; without even the implied warranty of
  19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  20   General Public License for more details.
  21
  22   You should have received a copy of the GNU Lesser General Public License
  23   along with PulseAudio; if not, write to the Free Software
  24   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  25   USA.
  26 ***/
  27
  28 typedef struct pa_source pa_source;
  29
  30 #include <inttypes.h>
  31
  32 #include <pulse/sample.h>
  33 #include <pulse/channelmap.h>
  34 #include <pulse/volume.h>
  35
  36 #include <pulsecore/core-def.h>
  37 #include <pulsecore/core.h>
  38 #include <pulsecore/idxset.h>
  39 #include <pulsecore/memblock.h>
  40 #include <pulsecore/memchunk.h>
  41 #include <pulsecore/sink.h>
  42 #include <pulsecore/module.h>
  43 #include <pulsecore/asyncmsgq.h>
  44 #include <pulsecore/msgobject.h>
  45
  46 #define PA_MAX_OUTPUTS_PER_SOURCE 32
  47
  48 typedef enum pa_source_state {
  49     PA_SOURCE_RUNNING,
  50     PA_SOURCE_SUSPENDED,
  51     PA_SOURCE_IDLE,
  52     PA_SOURCE_DISCONNECTED
  53 } pa_source_state_t;
  54
  55 struct pa_source {
  56     pa_msgobject parent;
  57
  58     uint32_t index;
  59     pa_core *core;
  60     pa_source_state_t state;
  61
  62     char *name;
  63     char *description, *driver;              /* may be NULL */
  64     int is_hardware;
  65
  66     pa_module *module;                        /* may be NULL */
  67
  68     pa_sample_spec sample_spec;
  69     pa_channel_map channel_map;
  70
  71     pa_idxset *outputs;
  72     pa_sink *monitor_of;                     /* may be NULL */
  73
  74     pa_cvolume volume;
  75     int muted;
  76     int refresh_volume;
  77     int refresh_muted;
  78
  79     int (*set_state)(pa_source*source, pa_source_state_t state);          /* may be NULL */
  80     int (*set_volume)(pa_source *s);         /* dito */
  81     int (*get_volume)(pa_source *s);         /* dito */
  82     int (*set_mute)(pa_source *s);           /* dito */
  83     int (*get_mute)(pa_source *s);           /* dito */
  84     pa_usec_t (*get_latency)(pa_source *s);  /* dito */
  85
  86     pa_asyncmsgq *asyncmsgq;
  87
  88     struct {
  89         pa_source_state_t state;
  90         pa_hashmap *outputs;
  91         pa_cvolume soft_volume;
  92         int soft_muted;
  93     } thread_info;
  94
  95     void *userdata;
  96 };
  97
  98 PA_DECLARE_CLASS(pa_source);
  99 #define PA_SOURCE(s) pa_source_cast(s)
 100
 101 typedef enum pa_source_message {
 102     PA_SOURCE_MESSAGE_ADD_OUTPUT,
 103     PA_SOURCE_MESSAGE_REMOVE_OUTPUT,
 104     PA_SOURCE_MESSAGE_GET_VOLUME,
 105     PA_SOURCE_MESSAGE_SET_VOLUME,
 106     PA_SOURCE_MESSAGE_GET_MUTE,
 107     PA_SOURCE_MESSAGE_SET_MUTE,
 108     PA_SOURCE_MESSAGE_GET_LATENCY,
 109     PA_SOURCE_MESSAGE_SET_STATE,
 110     PA_SOURCE_MESSAGE_PING,
 111     PA_SOURCE_MESSAGE_MAX
 112 } pa_source_message_t;
 113
 114 /* To be used exclusively by the source driver */
 115
 116 pa_source* pa_source_new(
 117         pa_core *core,
 118         const char *driver,
 119         const char *name,
 120         int namereg_fail,
 121         const pa_sample_spec *spec,
 122         const pa_channel_map *map);
 123
 124 void pa_source_disconnect(pa_source *s);
 125
 126 void pa_source_set_module(pa_source *s, pa_module *m);
 127 void pa_source_set_description(pa_source *s, const char *description);
 128 void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q);
 129
 130 /* Callable by everyone */
 131
 132 pa_usec_t pa_source_get_latency(pa_source *s);
 133
 134 int pa_source_update_status(pa_source*s);
 135 int pa_source_suspend(pa_source *s, int suspend);
 136 void pa_source_ping(pa_source *s);
 137
 138 void pa_source_set_volume(pa_source *source, const pa_cvolume *volume);
 139 const pa_cvolume *pa_source_get_volume(pa_source *source);
 140 void pa_source_set_mute(pa_source *source, int mute);
 141 int pa_source_get_mute(pa_source *source);
 142
 143 unsigned pa_source_used_by(pa_source *s);
 144 #define pa_source_get_state(s) ((pa_source_state_t) (s)->state)
 145
 146 /* To be used exclusively by the source driver thread */
 147
 148 void pa_source_post(pa_source*s, const pa_memchunk *b);
 149 int pa_source_process_msg(pa_msgobject *o, int code, void *userdata, pa_memchunk *chunk);
 150
 151 static inline int PA_SOURCE_OPENED(pa_source_state_t x) {
 152     return x == PA_SOURCE_RUNNING || x == PA_SOURCE_IDLE;
 153 }
 154
 155 #endif