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

   1 #ifndef foopulsesourceoutputhfoo
   2 #define foopulsesourceoutputhfoo
   3
   4 /* $Id$ */
   5
   6 /***
   7   This file is part of PulseAudio.
   8
   9   Copyright 2004-2006 Lennart Poettering
  10
  11   PulseAudio is free software; you can redistribute it and/or modify
  12   it under the terms of the GNU Lesser General Public License as published
  13   by the Free Software Foundation; either version 2 of the License,
  14   or (at your option) any later version.
  15
  16   PulseAudio is distributed in the hope that it will be useful, but
  17   WITHOUT ANY WARRANTY; without even the implied warranty of
  18   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  19   General Public License for more details.
  20
  21   You should have received a copy of the GNU Lesser General Public License
  22   along with PulseAudio; if not, write to the Free Software
  23   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  24   USA.
  25 ***/
  26
  27 #include <inttypes.h>
  28
  29 typedef struct pa_source_output pa_source_output;
  30
  31 #include <pulse/sample.h>
  32 #include <pulsecore/source.h>
  33 #include <pulsecore/memblockq.h>
  34 #include <pulsecore/resampler.h>
  35 #include <pulsecore/module.h>
  36 #include <pulsecore/client.h>
  37
  38 typedef enum pa_source_output_state {
  39     PA_SOURCE_OUTPUT_RUNNING,
  40     PA_SOURCE_OUTPUT_CORKED,
  41     PA_SOURCE_OUTPUT_DISCONNECTED
  42 } pa_source_output_state_t;
  43
  44 typedef enum pa_source_output_flags {
  45     PA_SOURCE_OUTPUT_NO_HOOKS = 1,
  46     PA_SOURCE_OUTPUT_VARIABLE_RATE = 2
  47 } pa_source_output_flags_t;
  48
  49 struct pa_source_output {
  50     pa_msgobject parent;
  51
  52     uint32_t index;
  53     pa_core *core;
  54     pa_source_output_state_t state;
  55     pa_source_output_flags_t flags;
  56
  57     char *name, *driver;                  /* may be NULL */
  58     pa_module *module;                    /* may be NULL */
  59     pa_client *client;                    /* may be NULL */
  60
  61     pa_source *source;
  62
  63     pa_sample_spec sample_spec;
  64     pa_channel_map channel_map;
  65
  66     void (*push)(pa_source_output *o, const pa_memchunk *chunk);
  67     void (*kill)(pa_source_output* o);              /* may be NULL */
  68     pa_usec_t (*get_latency) (pa_source_output *o); /* may be NULL */
  69
  70     pa_resample_method_t resample_method;
  71
  72     struct {
  73         pa_source_output_state_t state;
  74
  75         pa_sample_spec sample_spec;
  76
  77         pa_resampler* resampler;              /* may be NULL */
  78     } thread_info;
  79
  80     void *userdata;
  81 };
  82
  83 PA_DECLARE_CLASS(pa_source_output);
  84 #define PA_SOURCE_OUTPUT(o) pa_source_output_cast(o)
  85
  86 enum {
  87     PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY,
  88     PA_SOURCE_OUTPUT_MESSAGE_SET_RATE,
  89     PA_SOURCE_OUTPUT_MESSAGE_SET_STATE,
  90     PA_SOURCE_OUTPUT_MESSAGE_MAX
  91 };
  92
  93 typedef struct pa_source_output_new_data {
  94     const char *name, *driver;
  95     pa_module *module;
  96     pa_client *client;
  97
  98     pa_source *source;
  99
 100     pa_sample_spec sample_spec;
 101     int sample_spec_is_set;
 102     pa_channel_map channel_map;
 103     int channel_map_is_set;
 104
 105     pa_resample_method_t resample_method;
 106
 107     int start_corked;
 108 } pa_source_output_new_data;
 109
 110 pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data);
 111 void pa_source_output_new_data_set_sample_spec(pa_source_output_new_data *data, const pa_sample_spec *spec);
 112 void pa_source_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map);
 113 void pa_source_output_new_data_set_volume(pa_source_output_new_data *data, const pa_cvolume *volume);
 114
 115 /* To be called by the implementing module only */
 116
 117 pa_source_output* pa_source_output_new(
 118         pa_core *core,
 119         pa_source_output_new_data *data,
 120         pa_source_output_flags_t flags);
 121
 122 void pa_source_output_put(pa_source_output *o);
 123 void pa_source_output_disconnect(pa_source_output*o);
 124
 125 void pa_source_output_set_name(pa_source_output *i, const char *name);
 126
 127 /* Callable by everyone */
 128
 129 /* External code may request disconnection with this funcion */
 130 void pa_source_output_kill(pa_source_output*o);
 131
 132 pa_usec_t pa_source_output_get_latency(pa_source_output *i);
 133
 134 void pa_source_output_cork(pa_source_output *i, int b);
 135
 136 int pa_source_output_set_rate(pa_source_output *o, uint32_t rate);
 137
 138 pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o);
 139
 140 int pa_source_output_move_to(pa_source_output *o, pa_source *dest);
 141
 142 #define pa_source_output_get_state(o) ((o)->state)
 143
 144 /* To be used exclusively by the source driver thread */
 145
 146 void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk);
 147 int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk *chunk);
 148
 149 #endif