code.delx.au - pulseaudio/blob - src/pulse/internal.h

   1 #ifndef foointernalhfoo
   2 #define foointernalhfoo
   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 #include <pulse/mainloop-api.h>
  29 #include <pulse/context.h>
  30 #include <pulse/stream.h>
  31 #include <pulse/operation.h>
  32 #include <pulse/subscribe.h>
  33
  34 #include <pulsecore/socket-client.h>
  35 #include <pulsecore/pstream.h>
  36 #include <pulsecore/pdispatch.h>
  37 #include <pulsecore/dynarray.h>
  38 #include <pulsecore/llist.h>
  39 #include <pulsecore/native-common.h>
  40 #include <pulsecore/strlist.h>
  41 #include <pulsecore/mcalign.h>
  42 #include <pulsecore/memblockq.h>
  43 #include <pulsecore/hashmap.h>
  44 #include <pulsecore/refcnt.h>
  45 #include <pulsecore/time-smoother.h>
  46
  47 #include "client-conf.h"
  48
  49 #define DEFAULT_TIMEOUT (30)
  50
  51 struct pa_context {
  52     PA_REFCNT_DECLARE;
  53
  54     pa_proplist *proplist;
  55     pa_mainloop_api* mainloop;
  56
  57     pa_socket_client *client;
  58     pa_pstream *pstream;
  59     pa_pdispatch *pdispatch;
  60
  61     pa_dynarray *record_streams, *playback_streams;
  62     PA_LLIST_HEAD(pa_stream, streams);
  63     PA_LLIST_HEAD(pa_operation, operations);
  64
  65     uint32_t version;
  66     uint32_t ctag;
  67     uint32_t csyncid;
  68     uint32_t error;
  69     pa_context_state_t state;
  70
  71     pa_context_notify_cb_t state_callback;
  72     void *state_userdata;
  73     pa_context_subscribe_cb_t subscribe_callback;
  74     void *subscribe_userdata;
  75
  76     pa_mempool *mempool;
  77
  78     pa_bool_t is_local;
  79     pa_bool_t do_autospawn;
  80     int autospawn_lock_fd;
  81     pa_spawn_api spawn_api;
  82
  83     pa_strlist *server_list;
  84
  85     char *server;
  86
  87     pa_client_conf *conf;
  88
  89     uint32_t client_index;
  90 };
  91
  92 #define PA_MAX_WRITE_INDEX_CORRECTIONS 32
  93
  94 typedef struct pa_index_correction {
  95     uint32_t tag;
  96     int64_t value;
  97     pa_bool_t valid:1;
  98     pa_bool_t absolute:1;
  99     pa_bool_t corrupt:1;
 100 } pa_index_correction;
 101
 102 struct pa_stream {
 103     PA_REFCNT_DECLARE;
 104     PA_LLIST_FIELDS(pa_stream);
 105
 106     pa_context *context;
 107     pa_mainloop_api *mainloop;
 108
 109     pa_stream_direction_t direction;
 110     pa_stream_state_t state;
 111     pa_stream_flags_t flags;
 112
 113     pa_sample_spec sample_spec;
 114     pa_channel_map channel_map;
 115
 116     pa_proplist *proplist;
 117
 118     uint32_t channel;
 119     pa_bool_t channel_valid;
 120     uint32_t syncid;
 121     uint32_t stream_index;
 122
 123     uint32_t requested_bytes;
 124     pa_buffer_attr buffer_attr;
 125
 126     uint32_t device_index;
 127     char *device_name;
 128     pa_bool_t suspended;
 129
 130     pa_memchunk peek_memchunk;
 131     void *peek_data;
 132     pa_memblockq *record_memblockq;
 133
 134     pa_bool_t corked;
 135
 136     /* Store latest latency info */
 137     pa_timing_info timing_info;
 138     pa_bool_t timing_info_valid;
 139
 140     /* Use to make sure that time advances monotonically */
 141     pa_usec_t previous_time;
 142
 143     /* time updates with tags older than these are invalid */
 144     uint32_t write_index_not_before;
 145     uint32_t read_index_not_before;
 146
 147     /* Data about individual timing update correctoins */
 148     pa_index_correction write_index_corrections[PA_MAX_WRITE_INDEX_CORRECTIONS];
 149     int current_write_index_correction;
 150
 151     /* Latency interpolation stuff */
 152     pa_time_event *auto_timing_update_event;
 153     pa_bool_t auto_timing_update_requested;
 154
 155     pa_smoother *smoother;
 156
 157     /* Callbacks */
 158     pa_stream_notify_cb_t state_callback;
 159     void *state_userdata;
 160     pa_stream_request_cb_t read_callback;
 161     void *read_userdata;
 162     pa_stream_request_cb_t write_callback;
 163     void *write_userdata;
 164     pa_stream_notify_cb_t overflow_callback;
 165     void *overflow_userdata;
 166     pa_stream_notify_cb_t underflow_callback;
 167     void *underflow_userdata;
 168     pa_stream_notify_cb_t latency_update_callback;
 169     void *latency_update_userdata;
 170     pa_stream_notify_cb_t moved_callback;
 171     void *moved_userdata;
 172     pa_stream_notify_cb_t suspended_callback;
 173     void *suspended_userdata;
 174     pa_stream_notify_cb_t started_callback;
 175     void *started_userdata;
 176 };
 177
 178 typedef void (*pa_operation_cb_t)(void);
 179
 180 struct pa_operation {
 181     PA_REFCNT_DECLARE;
 182
 183     pa_context *context;
 184     pa_stream *stream;
 185
 186     PA_LLIST_FIELDS(pa_operation);
 187
 188     pa_operation_state_t state;
 189     void *userdata;
 190     pa_operation_cb_t callback;
 191
 192     void *private; /* some operations might need this */
 193 };
 194
 195 void pa_command_request(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 196 void pa_command_stream_killed(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 197 void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 198 void pa_command_overflow_or_underflow(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 199 void pa_command_stream_suspended(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 200 void pa_command_stream_moved(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 201 void pa_command_stream_started(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 202 pa_operation *pa_operation_new(pa_context *c, pa_stream *s, pa_operation_cb_t callback, void *userdata);
 203 void pa_operation_done(pa_operation *o);
 204
 205 void pa_create_stream_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 206 void pa_stream_disconnect_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 207 void pa_context_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 208 void pa_stream_simple_ack_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata);
 209
 210 void pa_context_fail(pa_context *c, int error);
 211 int pa_context_set_error(pa_context *c, int error);
 212 void pa_context_set_state(pa_context *c, pa_context_state_t st);
 213 int pa_context_handle_error(pa_context *c, uint32_t command, pa_tagstruct *t, pa_bool_t fail);
 214 pa_operation* pa_context_send_simple_command(pa_context *c, uint32_t command, void (*internal_callback)(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata), void (*cb)(void), void *userdata);
 215
 216 void pa_stream_set_state(pa_stream *s, pa_stream_state_t st);
 217
 218 pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *tag);
 219
 220 #define PA_CHECK_VALIDITY(context, expression, error) do { \
 221         if (!(expression)) \
 222             return -pa_context_set_error((context), (error)); \
 223 } while(0)
 224
 225
 226 #define PA_CHECK_VALIDITY_RETURN_ANY(context, expression, error, value) do { \
 227         if (!(expression)) { \
 228             pa_context_set_error((context), (error)); \
 229             return value; \
 230         } \
 231 } while(0)
 232
 233 #define PA_CHECK_VALIDITY_RETURN_NULL(context, expression, error) PA_CHECK_VALIDITY_RETURN_ANY(context, expression, error, NULL)
 234
 235 void pa_init_proplist(pa_proplist *p);
 236
 237 #endif