annotate src/audio/pulseaudio/SDL_pulseaudio.c @ 3068:b21348d47cab

Fixed bug #633 Description From Michael Stone 2008-09-25 19:27:29 (-) [reply] To determine whether a pid is occupied with the kill(pid, 0) idiom, you have to test #include <signal.h> #include <errno.h> kill(pid, 0) < 0 && errno == ESRCH not just #include <signal.h> kill(pid, 0) < 0 otherwise you get incorrect results when pid is running as a different user (causing kill(pid, 0) to return -1 + EPERM). src/audio/alsa/SDL_alsa_audio.c is certainly affected by this bug in both 1.2.13 and 1.3-trunk. It probably occurs in other places as well.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 17 Feb 2009 05:17:51 +0000
parents 2929ed239d2a
children 878d8adf2fde
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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99210400e8b9 Updated copyright date
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3 Copyright (C) 1997-2009 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /*
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24 The PulseAudio target for SDL 1.3 is based on the 1.3 arts target, with
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25 the appropriate parts replaced with the 1.2 PulseAudio target code. This
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26 was the cleanest way to move it to 1.3. The 1.2 target was written by
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27 Stéphan Kochen: stephan .a.t. kochen.nl
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28 */
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29
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30 #include "SDL_config.h"
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31
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32 /* Allow access to a raw mixing buffer */
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33
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34 #ifdef HAVE_SIGNAL_H
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35 #include <signal.h>
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36 #endif
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37 #include <unistd.h>
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38 #include <sys/types.h>
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39 #include <errno.h>
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40 #include <pulse/simple.h>
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41
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42 #include "SDL_timer.h"
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43 #include "SDL_audio.h"
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44 #include "../SDL_audiomem.h"
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45 #include "../SDL_audio_c.h"
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46 #include "SDL_pulseaudio.h"
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47
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48 #ifdef SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC
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49 #include "SDL_name.h"
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50 #include "SDL_loadso.h"
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51 #else
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52 #define SDL_NAME(X) X
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53 #endif
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54
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55 /* The tag name used by pulse audio */
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56 #define PULSEAUDIO_DRIVER_NAME "pulseaudio"
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57
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58 #ifdef SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC
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59
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60 static const char *pulse_library = SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC;
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61 static void *pulse_handle = NULL;
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62
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63 /* !!! FIXME: I hate this SDL_NAME clutter...it makes everything so messy! */
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64 static pa_simple *(*SDL_NAME(pa_simple_new)) (const char *server,
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65 const char *name,
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66 pa_stream_direction_t dir,
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67 const char *dev,
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68 const char *stream_name,
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69 const pa_sample_spec * ss,
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70 const pa_channel_map * map,
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71 const pa_buffer_attr * attr,
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72 int *error);
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73 static void (*SDL_NAME(pa_simple_free)) (pa_simple * s);
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74 static int (*SDL_NAME(pa_simple_drain)) (pa_simple * s, int *error);
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75 static int (*SDL_NAME(pa_simple_write)) (pa_simple * s,
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76 const void *data,
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77 size_t length, int *error);
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78 static pa_channel_map *(*SDL_NAME(pa_channel_map_init_auto)) (pa_channel_map *
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79 m,
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80 unsigned
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81 channels,
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82 pa_channel_map_def_t
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83 def);
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84 static const char *(*SDL_NAME(pa_strerror)) (int error);
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85
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86
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87 #define SDL_PULSEAUDIO_SYM(x) { #x, (void **) (char *) &SDL_NAME(x) }
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88 static struct
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89 {
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90 const char *name;
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91 void **func;
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92 } pulse_functions[] = {
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93 /* *INDENT-OFF* */
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94 SDL_PULSEAUDIO_SYM(pa_simple_new),
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95 SDL_PULSEAUDIO_SYM(pa_simple_free),
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96 SDL_PULSEAUDIO_SYM(pa_simple_drain),
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97 SDL_PULSEAUDIO_SYM(pa_simple_write),
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98 SDL_PULSEAUDIO_SYM(pa_channel_map_init_auto),
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99 SDL_PULSEAUDIO_SYM(pa_strerror),
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100 /* *INDENT-ON* */
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101 };
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102
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103 #undef SDL_PULSEAUDIO_SYM
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104
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105 static void
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106 UnloadPulseLibrary()
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107 {
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108 if (pulse_handle != NULL) {
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109 SDL_UnloadObject(pulse_handle);
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110 pulse_handle = NULL;
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111 }
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112 }
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113
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114 static int
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115 LoadPulseLibrary(void)
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116 {
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117 int i, retval = -1;
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118
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119 if (pulse_handle == NULL) {
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120 pulse_handle = SDL_LoadObject(pulse_library);
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121 if (pulse_handle != NULL) {
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122 retval = 0;
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123 for (i = 0; i < SDL_arraysize(pulse_functions); ++i) {
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124 *pulse_functions[i].func =
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125 SDL_LoadFunction(pulse_handle, pulse_functions[i].name);
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126 if (!*pulse_functions[i].func) {
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127 retval = -1;
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128 UnloadPulseLibrary();
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parents:
diff changeset
129 break;
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130 }
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131 }
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132 }
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133 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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134
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
135 return retval;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
136 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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137
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 #else
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139
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140 static void
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
141 UnloadPulseLibrary()
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142 {
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parents:
diff changeset
143 return;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
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144 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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145
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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146 static int
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
147 LoadPulseLibrary(void)
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148 {
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149 return 0;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
150 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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151
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152 #endif /* SDL_AUDIO_DRIVER_PULSEAUDIO_DYNAMIC */
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153
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diff changeset
154 /* This function waits until it is possible to write a full sound buffer */
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diff changeset
155 static void
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parents:
diff changeset
156 PULSEAUDIO_WaitDevice(_THIS)
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157 {
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Ryan C. Gordon <icculus@icculus.org>
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diff changeset
158 Sint32 ticks;
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159
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160 /* Check to see if the thread-parent process is still alive */
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parents:
diff changeset
161 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 static int cnt = 0;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163 /* Note that this only works with thread implementations
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parents:
diff changeset
164 that use a different process id for each thread.
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parents:
diff changeset
165 */
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Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 /* Check every 10 loops */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 if (this->hidden->parent && (((++cnt) % 10) == 0)) {
3068
b21348d47cab Fixed bug #633
Sam Lantinga <slouken@libsdl.org>
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diff changeset
168 if (kill(this->hidden->parent, 0) < 0 && errno == ESRCH) {
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
169 this->enabled = 0;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
170 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
171 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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173
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174 /* Use timer for general audio synchronization */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
175 ticks =
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
176 ((Sint32) (this->hidden->next_frame - SDL_GetTicks())) - FUDGE_TICKS;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
177 if (ticks > 0) {
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diff changeset
178 SDL_Delay(ticks);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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179 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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180 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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181
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182 static void
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diff changeset
183 PULSEAUDIO_PlayDevice(_THIS)
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184 {
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diff changeset
185 /* Write the audio data */
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diff changeset
186 if (SDL_NAME(pa_simple_write) (this->hidden->stream, this->hidden->mixbuf,
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diff changeset
187 this->hidden->mixlen, NULL) != 0) {
2271
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diff changeset
188 this->enabled = 0;
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189 }
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190 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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191
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diff changeset
192 static void
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193 PULSEAUDIO_WaitDone(_THIS)
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194 {
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195 SDL_NAME(pa_simple_drain) (this->hidden->stream, NULL);
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196 }
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197
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198
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diff changeset
199 static Uint8 *
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diff changeset
200 PULSEAUDIO_GetDeviceBuf(_THIS)
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201 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
202 return (this->hidden->mixbuf);
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diff changeset
203 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
204
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
205
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
206 static void
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
207 PULSEAUDIO_CloseDevice(_THIS)
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
208 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209 if (this->hidden != NULL) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
210 if (this->hidden->mixbuf != NULL) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
211 SDL_FreeAudioMem(this->hidden->mixbuf);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
212 this->hidden->mixbuf = NULL;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
213 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 if (this->hidden->stream) {
2274
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diff changeset
215 SDL_NAME(pa_simple_drain) (this->hidden->stream, NULL);
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
216 SDL_NAME(pa_simple_free) (this->hidden->stream);
2271
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diff changeset
217 this->hidden->stream = NULL;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
218 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
219 SDL_free(this->hidden);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
220 this->hidden = NULL;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
221 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
223
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 /* !!! FIXME: this could probably be expanded. */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
226 /* Try to get the name of the program */
2274
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diff changeset
227 static char *
Sam Lantinga <slouken@libsdl.org>
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diff changeset
228 get_progname(void)
2271
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diff changeset
229 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 char *progname = NULL;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 #ifdef __LINUX__
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
232 FILE *fp;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 static char temp[BUFSIZ];
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
234
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 SDL_snprintf(temp, SDL_arraysize(temp), "/proc/%d/cmdline", getpid());
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236 fp = fopen(temp, "r");
2274
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parents: 2272
diff changeset
237 if (fp != NULL) {
Sam Lantinga <slouken@libsdl.org>
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diff changeset
238 if (fgets(temp, sizeof(temp) - 1, fp)) {
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
239 progname = SDL_strrchr(temp, '/');
2274
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diff changeset
240 if (progname == NULL) {
2271
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parents:
diff changeset
241 progname = temp;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
242 } else {
2274
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diff changeset
243 progname = progname + 1;
2271
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diff changeset
244 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 fclose(fp);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
247 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 #endif
2274
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diff changeset
249 return (progname);
2271
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parents:
diff changeset
250 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 static int
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 PULSEAUDIO_OpenDevice(_THIS, const char *devname, int iscapture)
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255 {
2272
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diff changeset
256 Uint16 test_format = 0;
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diff changeset
257 pa_sample_spec paspec;
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diff changeset
258 pa_buffer_attr paattr;
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diff changeset
259 pa_channel_map pacmap;
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diff changeset
260 int err = 0;
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261
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parents:
diff changeset
262 /* Initialize all variables that we clean on shutdown */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
263 this->hidden = (struct SDL_PrivateAudioData *)
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
264 SDL_malloc((sizeof *this->hidden));
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parents:
diff changeset
265 if (this->hidden == NULL) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
266 SDL_OutOfMemory();
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parents:
diff changeset
267 return 0;
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parents:
diff changeset
268 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
269 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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270
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diff changeset
271 paspec.format = PA_SAMPLE_INVALID;
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272
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diff changeset
273 /* Try for a closest match on audio format */
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parents:
diff changeset
274 for (test_format = SDL_FirstAudioFormat(this->spec.format);
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diff changeset
275 (paspec.format == PA_SAMPLE_INVALID) && test_format;) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
276 #ifdef DEBUG_AUDIO
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diff changeset
277 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
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diff changeset
278 #endif
2274
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279 switch (test_format) {
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280 case AUDIO_U8:
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281 paspec.format = PA_SAMPLE_U8;
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282 break;
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283 case AUDIO_S16LSB:
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284 paspec.format = PA_SAMPLE_S16LE;
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285 break;
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diff changeset
286 case AUDIO_S16MSB:
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diff changeset
287 paspec.format = PA_SAMPLE_S16BE;
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diff changeset
288 break;
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diff changeset
289 default:
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290 paspec.format = PA_SAMPLE_INVALID;
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diff changeset
291 break;
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292 }
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diff changeset
293 if (paspec.format == PA_SAMPLE_INVALID) {
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diff changeset
294 test_format = SDL_NextAudioFormat();
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295 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
296 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
297 if (paspec.format == PA_SAMPLE_INVALID) {
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parents:
diff changeset
298 PULSEAUDIO_CloseDevice(this);
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diff changeset
299 SDL_SetError("Couldn't find any hardware audio formats");
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parents:
diff changeset
300 return 0;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
301 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 this->spec.format = test_format;
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parents:
diff changeset
303
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
304 /* Calculate the final parameters for this audio specification */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
305 SDL_CalculateAudioSpec(&this->spec);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
306
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
307 /* Allocate mixing buffer */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 this->hidden->mixlen = this->spec.size;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
309 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
310 if (this->hidden->mixbuf == NULL) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311 PULSEAUDIO_CloseDevice(this);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
312 SDL_OutOfMemory();
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
313 return 0;
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parents:
diff changeset
314 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
316
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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diff changeset
317 paspec.channels = this->spec.channels;
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parents:
diff changeset
318 paspec.rate = this->spec.freq;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
319
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
320 /* Reduced prebuffering compared to the defaults. */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 paattr.tlength = this->hidden->mixlen;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
322 paattr.minreq = this->hidden->mixlen;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
323 paattr.fragsize = this->hidden->mixlen;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
324 paattr.prebuf = this->hidden->mixlen;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
325 paattr.maxlength = this->hidden->mixlen * 4;
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parents:
diff changeset
326
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327 /* The SDL ALSA output hints us that we use Windows' channel mapping */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
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parents:
diff changeset
328 /* http://bugzilla.libsdl.org/show_bug.cgi?id=110 */
2274
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diff changeset
329 SDL_NAME(pa_channel_map_init_auto) (&pacmap, this->spec.channels,
Sam Lantinga <slouken@libsdl.org>
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diff changeset
330 PA_CHANNEL_MAP_WAVEEX);
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 /* Connect to the PulseAudio server */
2274
Sam Lantinga <slouken@libsdl.org>
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diff changeset
333 this->hidden->stream = SDL_NAME(pa_simple_new) (SDL_getenv("PASERVER"), /* server */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
334 get_progname(), /* application name */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
335 PA_STREAM_PLAYBACK, /* playback mode */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
336 SDL_getenv("PADEVICE"), /* device on the server */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
337 "Simple DirectMedia Layer", /* stream description */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
338 &paspec, /* sample format spec */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
339 &pacmap, /* channel map */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
340 &paattr, /* buffering attributes */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
341 &err /* error code */
Sam Lantinga <slouken@libsdl.org>
parents: 2272
diff changeset
342 );
2272
25a87553a59d Minor PulseAudio fixes: corrected OpenDevice return code, human-readable
Ryan C. Gordon <icculus@icculus.org>
parents: 2271
diff changeset
343
2274
Sam Lantinga <slouken@libsdl.org>
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diff changeset
344 if (this->hidden->stream == NULL) {
2271
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diff changeset
345 PULSEAUDIO_CloseDevice(this);
2272
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diff changeset
346 SDL_SetError("Could not connect to PulseAudio: %s",
25a87553a59d Minor PulseAudio fixes: corrected OpenDevice return code, human-readable
Ryan C. Gordon <icculus@icculus.org>
parents: 2271
diff changeset
347 SDL_NAME(pa_strerror(err)));
25a87553a59d Minor PulseAudio fixes: corrected OpenDevice return code, human-readable
Ryan C. Gordon <icculus@icculus.org>
parents: 2271
diff changeset
348 return 0;
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
350
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351 /* Get the parent process id (we're the parent of the audio thread) */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 this->hidden->parent = getpid();
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 /* We're ready to rock and roll. :-) */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 return 1;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359 static void
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360 PULSEAUDIO_Deinitialize(void)
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 UnloadPulseLibrary();
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 static int
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 PULSEAUDIO_Init(SDL_AudioDriverImpl * impl)
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369 if (LoadPulseLibrary() < 0) {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 return 0;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
372
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 /* Set the function pointers */
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 impl->OpenDevice = PULSEAUDIO_OpenDevice;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 impl->PlayDevice = PULSEAUDIO_PlayDevice;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
376 impl->WaitDevice = PULSEAUDIO_WaitDevice;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 impl->GetDeviceBuf = PULSEAUDIO_GetDeviceBuf;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378 impl->CloseDevice = PULSEAUDIO_CloseDevice;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 impl->WaitDone = PULSEAUDIO_WaitDone;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 impl->Deinitialize = PULSEAUDIO_Deinitialize;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381 impl->OnlyHasDefaultOutputDevice = 1;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382
2938
2929ed239d2a Adjusted default choice of audio driver.
Ryan C. Gordon <icculus@icculus.org>
parents: 2859
diff changeset
383 /* !!! FIXME: should test if server is available here, return 2 if so. */
2271
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384 return 1;
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 }
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388 AudioBootStrap PULSEAUDIO_bootstrap = {
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 PULSEAUDIO_DRIVER_NAME, "PulseAudio", PULSEAUDIO_Init, 0
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 };
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391
60b4c52a7906 Ported PulseAudio target from 1.2 to 1.3 interfaces, and added it to the trunk.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392 /* vi: set ts=4 sw=4 expandtab: */