Mercurial > sdl-ios-xcode

annotate src/audio/mme/SDL_mmeaudio.c @ 3099:82e60908fab1

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Date: Mon, 23 Mar 2009 09:17:24 +0200 From: "Mike Gorchak" Subject: New QNX patches Please apply patch qnx4.diff, which is attached. What has been done: 1)Added back OpenGL ES renderer for QNX target. Added few corrections to OpenGL ES renderer to let it work under QNX. OpenGL ES renderer do not support textures under QNX, so I think some additional work must be done. 2) Added GL_OES_query_matrix extension to SDL_opengles.h header file, which required by OpenGL ES 1.1 specification. 3) Added attribute clearing at the entrance of function SDL_GL_GetAttribure(). Added error checking into the function SDL_GL_GetAttribure(), because some attributes can't be obtained in OpenGL ES 1.0. 4) Porting testdyngles to OpenGL ES 1.0 (1.1 has glColor4ub() and glColor4f() functions, but 1.0 has glColor4f() only). 5) Added error checking after obtaining attributes using SDL_GL_GetAttribute() function to the testgl2 and testgles. 6) Small correction to testmultiaudio with printing errors. 7) Added software and accelerated OpenGL ES 1.0 support into the QNX GF driver. Please remove ./src/audio/nto directory - it will not be used anymore. Please create ./src/audio/qsa directory and add content of the archive qsa.tar.gz into this directory. I rewrote some sound code, added support for multiple audio cards, enumeration, etc. Added initial support for capture. As far as I can understand SDL 1.3 is not supporting audio capture right now ? Sam, Am I right ? Or audio capture must be supported through the PlayDevice routine ? And last, please put file SDL_gf_opengles.c to the ./src/video/qnxgf directory. It is OpenGL ES 1.1 emulation layer for some functions, which are not supported by OpenGL ES 1.0.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 24 Mar 2009 10:33:12 +0000
parents 99210400e8b9
children f7b03b6838cb
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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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 Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 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 Library 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 Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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 #include "SDL_config.h"
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23
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24 /* Tru64 UNIX MME support */
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25 #include <mme_api.h>
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26
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27 #include "SDL_timer.h"
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28 #include "SDL_audio.h"
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29 #include "../SDL_audio_c.h"
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30 #include "SDL_mmeaudio.h"
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31
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32 static BOOL inUse[NUM_BUFFERS];
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33
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34 static void
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35 SetMMerror(char *function, MMRESULT code)
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36 {
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37 int len;
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38 char errbuf[MAXERRORLENGTH];
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39
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40 SDL_snprintf(errbuf, SDL_arraysize(errbuf), "%s: ", function);
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41 len = SDL_strlen(errbuf);
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42 waveOutGetErrorText(code, errbuf + len, MAXERRORLENGTH - len);
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43 SDL_SetError("%s", errbuf);
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44 }
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45
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46 static void CALLBACK
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47 MME_Callback(HWAVEOUT hwo,
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48 UINT uMsg, DWORD dwInstance, LPARAM dwParam1, LPARAM dwParam2)
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49 {
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50 WAVEHDR *wp = (WAVEHDR *) dwParam1;
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51
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52 if (uMsg == WOM_DONE)
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53 inUse[wp->dwUser] = FALSE;
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54 }
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55
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56 static int
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57 MME_OpenDevice(_THIS, const char *devname, int iscapture)
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58 {
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59 int valid_format = 0;
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60 MMRESULT result;
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61 Uint8 *mixbuf = NULL;
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62 int i;
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63
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64 /* Initialize all variables that we clean on shutdown */
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65 this->hidden = (struct SDL_PrivateAudioData *)
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66 SDL_malloc((sizeof *this->hidden));
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67 if (this->hidden == NULL) {
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68 SDL_OutOfMemory();
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69 return 0;
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70 }
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71 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
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72
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73 /* Set basic WAVE format parameters */
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74 this->hidden->shm = mmeAllocMem(sizeof(*this->hidden->shm));
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75 if (this->hidden->shm == NULL) {
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76 MME_CloseDevice(this);
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77 SDL_OutOfMemory();
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78 return 0;
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79 }
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81 SDL_memset(this->hidden->shm, '\0', sizeof(*this->hidden->shm));
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82 this->hidden->shm->sound = 0;
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83 this->hidden->shm->wFmt.wf.wFormatTag = WAVE_FORMAT_PCM;
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84
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85 /* Determine the audio parameters from the AudioSpec */
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86 /* Try for a closest match on audio format */
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87 for (test_format = SDL_FirstAudioFormat(this->spec.format);
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88 !valid_format && test_format;) {
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89 valid_format = 1;
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90 switch (test_format) {
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91 case AUDIO_U8:
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92 case AUDIO_S16:
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93 case AUDIO_S32:
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94 break;
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95 default:
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96 valid_format = 0;
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97 test_format = SDL_NextAudioFormat();
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98 }
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99 }
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100
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101 if (!valid_format) {
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102 MME_CloseDevice(this);
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103 SDL_SetError("Unsupported audio format");
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104 return 0;
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105 }
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106
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107 this->spec.format = test_format;
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108 this->hidden->shm->wFmt.wBitsPerSample = SDL_AUDIO_BITSIZE(test_format);
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109
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110 /* !!! FIXME: Can this handle more than stereo? */
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111 this->hidden->shm->wFmt.wf.nChannels = this->spec.channels;
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112 this->hidden->shm->wFmt.wf.nSamplesPerSec = this->spec.freq;
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113 this->hidden->shm->wFmt.wf.nBlockAlign =
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114 this->hidden->shm->wFmt.wf.nChannels *
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115 this->hidden->shm->wFmt.wBitsPerSample / 8;
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116 this->hidden->shm->wFmt.wf.nAvgBytesPerSec =
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117 this->hidden->shm->wFmt.wf.nSamplesPerSec *
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118 this->hidden->shm->wFmt.wf.nBlockAlign;
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119
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120 /* Check the buffer size -- minimum of 1/4 second (word aligned) */
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121 if (this->spec.samples < (this->spec.freq / 4))
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122 this->spec.samples = ((this->spec.freq / 4) + 3) & ~3;
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123
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124 /* Update the fragment size as size in bytes */
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125 SDL_CalculateAudioSpec(&this->spec);
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126
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127 /* Open the audio device */
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128 result = waveOutOpen(&(this->hidden->shm->sound),
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129 WAVE_MAPPER,
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130 &(this->hidden->shm->wFmt.wf),
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131 MME_Callback,
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132 NULL, (CALLBACK_FUNCTION | WAVE_OPEN_SHAREABLE));
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133 if (result != MMSYSERR_NOERROR) {
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134 MME_CloseDevice(this);
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135 SetMMerror("waveOutOpen()", result);
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136 return 0;
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137 }
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138
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139 /* Create the sound buffers */
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140 mixbuf = (Uint8 *) mmeAllocBuffer(NUM_BUFFERS * (this->spec.size));
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141 if (mixbuf == NULL) {
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142 MME_CloseDevice(this);
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143 SDL_OutOfMemory();
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144 return 0;
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145 }
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146 this->hidden->mixbuf = mixbuf;
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147
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148 for (i = 0; i < NUM_BUFFERS; i++) {
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149 this->hidden->shm->wHdr[i].lpData = &mixbuf[i * (this->spec.size)];
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150 this->hidden->shm->wHdr[i].dwBufferLength = this->spec.size;
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151 this->hidden->shm->wHdr[i].dwFlags = 0;
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152 this->hidden->shm->wHdr[i].dwUser = i;
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153 this->hidden->shm->wHdr[i].dwLoops = 0; /* loop control counter */
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154 this->hidden->shm->wHdr[i].lpNext = NULL; /* reserved for driver */
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155 this->hidden->shm->wHdr[i].reserved = 0;
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156 inUse[i] = FALSE;
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157 }
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158 this->hidden->next_buffer = 0;
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159
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160 return 1;
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161 }
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162
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163 static void
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164 MME_WaitDevice(_THIS)
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165 {
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166 while (inUse[this->hidden->next_buffer]) {
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167 mmeWaitForCallbacks();
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168 mmeProcessCallbacks();
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169 }
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170 }
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171
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172 static Uint8 *
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173 MME_GetDeviceBuf(_THIS)
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174 {
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175 void *retval = this->hidden->shm->wHdr[this->hidden->next_buffer].lpData;
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176 inUse[this->hidden->next_buffer] = TRUE;
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177 return (Uint8 *) retval;
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178 }
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179
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180 static void
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181 MME_PlayDevice(_THIS)
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182 {
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183 /* Queue it up */
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184 waveOutWrite(this->hidden->shm->sound,
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185 &(this->hidden->shm->wHdr[this->hidden->next_buffer]),
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186 sizeof(WAVEHDR));
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187 this->hidden->next_buffer = (this->hidden->next_buffer + 1) % NUM_BUFFERS;
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188 }
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189
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190 static void
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191 MME_WaitDone(_THIS)
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192 {
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193 MMRESULT result;
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194 int i;
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195
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196 if (this->hidden->shm->sound) {
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197 for (i = 0; i < NUM_BUFFERS; i++)
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198 while (inUse[i]) {
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199 mmeWaitForCallbacks();
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200 mmeProcessCallbacks();
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201 }
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202 result = waveOutReset(this->hidden->shm->sound);
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203 if (result != MMSYSERR_NOERROR)
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204 SetMMerror("waveOutReset()", result);
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205 mmeProcessCallbacks();
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206 }
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207 }
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208
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209 static void
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210 MME_CloseDevice(_THIS)
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211 {
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212 if (this->hidden != NULL) {
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213 MMRESULT result;
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214
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215 if (this->hidden->mixbuf) {
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216 result = mmeFreeBuffer(this->hidden->mixbuf);
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217 if (result != MMSYSERR_NOERROR)
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218 SetMMerror("mmeFreeBuffer", result);
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219 this->hidden->mixbuf = NULL;
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220 }
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221
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222 if (this->hidden->shm) {
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223 if (this->hidden->shm->sound) {
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224 result = waveOutClose(this->hidden->shm->sound);
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225 if (result != MMSYSERR_NOERROR)
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226 SetMMerror("waveOutClose()", result);
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227 mmeProcessCallbacks();
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228 }
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229 result = mmeFreeMem(this->hidden->shm);
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230 if (result != MMSYSERR_NOERROR)
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231 SetMMerror("mmeFreeMem()", result);
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232 this->hidden->shm = NULL;
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233 }
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234
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235 SDL_free(this->hidden);
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236 this->hidden = NULL;
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237 }
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238 }
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239
2049
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240 static int
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241 MME_Init(SDL_AudioDriverImpl * impl)
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242 {
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243 /* Set the function pointers */
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244 impl->OpenDevice = MME_OpenDevice;
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245 impl->WaitDevice = MME_WaitDevice;
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246 impl->WaitDone = MME_WaitDone;
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247 impl->PlayDevice = MME_PlayDevice;
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248 impl->GetDeviceBuf = MME_GetDeviceBuf;
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249 impl->CloseDevice = MME_CloseDevice;
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250 impl->OnlyHasDefaultOutputDevice = 1;
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251
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252 return 1;
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253 }
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254
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255 /* !!! FIXME: Windows "windib" driver is called waveout, too */
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256 AudioBootStrap MMEAUDIO_bootstrap = {
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257 "waveout", "Tru64 MME WaveOut", MME_Init, 0
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258 };
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259
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260 /* vi: set ts=4 sw=4 expandtab: */