Mercurial > hg > xmms-sid
annotate src/xs_sidplay1.cc @ 753:36c6a6e629bb
Rename some variables.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Mon, 05 Nov 2012 18:51:11 +0200 |
parents | 55eea3fa8868 |
children | 5557837fe5b6 |
rev | line source |
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1 /* |
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2 XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS) |
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3 |
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4 libSIDPlay v1 support |
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5 |
324 | 6 Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org> |
539 | 7 (C) Copyright 1999-2007 Tecnic Software productions (TNSP) |
71
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8 |
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9 This program is free software; you can redistribute it and/or modify |
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10 it under the terms of the GNU General Public License as published by |
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11 the Free Software Foundation; either version 2 of the License, or |
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12 (at your option) any later version. |
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13 |
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14 This program is distributed in the hope that it will be useful, |
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 GNU General Public License for more details. |
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18 |
412
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19 You should have received a copy of the GNU General Public License along |
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20 with this program; if not, write to the Free Software Foundation, Inc., |
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21 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
71
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22 */ |
73
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23 #include "xmms-sid.h" |
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24 |
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25 #ifdef HAVE_SIDPLAY1 |
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26 |
460 | 27 #include <stdio.h> |
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28 #include "xs_sidplay1.h" |
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29 #include "xs_config.h" |
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30 |
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31 #include <sidplay/player.h> |
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32 #include <sidplay/myendian.h> |
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33 #include <sidplay/fformat.h> |
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34 |
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35 |
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36 /* Maximum audio frequency supported by libSIDPlay v1 */ |
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37 #define SIDPLAY1_MAX_FREQ (48000) |
526
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38 |
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39 |
396 | 40 typedef struct { |
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41 emuEngine *currEng; |
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42 emuConfig currConfig; |
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43 sidTune *currTune; |
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44 guint8 *buf; |
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45 size_t bufSize; |
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Lots of cosmetic code cleanups; synced the de-gettextification from Audacious-SID, I suppose it makes some sense ...
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46 } xs_sidplay1_t; |
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47 |
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48 |
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49 /* We need to 'export' all this pseudo-C++ crap */ |
396 | 50 extern "C" { |
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51 |
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52 |
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53 /* Return song information |
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54 */ |
691 | 55 #define TFUNCTION xs_sidplay1_getinfo |
56 #define TFUNCTION2 xs_sidplay1_updateinfo | |
57 #define TTUNEINFO sidTuneInfo | |
58 #define TTUNE sidTune | |
59 #define TENGINE xs_sidplay1_t | |
467
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60 #include "xs_sidplay.h" |
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61 |
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62 |
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63 /* Check if we can play the given file |
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64 */ |
751 | 65 gboolean xs_sidplay1_probe(XSFile *f) |
364
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66 { |
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67 gchar tmpBuf[4]; |
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68 |
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69 if (!f) return FALSE; |
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70 |
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71 if (xs_fread(tmpBuf, sizeof(gchar), 4, f) != 4) |
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72 return FALSE; |
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73 |
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74 if (!strncmp(tmpBuf, "PSID", 4)) |
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75 return TRUE; |
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76 else |
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77 return FALSE; |
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78 } |
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79 |
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80 |
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81 /* Initialize SIDPlay1 |
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82 */ |
751 | 83 gboolean xs_sidplay1_init(XSEngineState * myStatus) |
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84 { |
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85 gint tmpFreq; |
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86 xs_sidplay1_t *myEngine; |
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87 assert(myStatus); |
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88 |
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89 /* Allocate internal structures */ |
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90 myEngine = (xs_sidplay1_t *) g_malloc0(sizeof(xs_sidplay1_t)); |
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91 if (!myEngine) return FALSE; |
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92 |
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93 /* Initialize engine */ |
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94 myEngine->currEng = new emuEngine(); |
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95 if (!myEngine->currEng) { |
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96 xs_error("[SIDPlay1] Could not initialize emulation engine.\n"); |
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97 g_free(myEngine); |
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98 return FALSE; |
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99 } |
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100 |
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101 /* Verify endianess */ |
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102 if (!myEngine->currEng->verifyEndianess()) { |
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103 xs_error("[SIDPlay1] Endianess verification failed.\n"); |
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104 delete myEngine->currEng; |
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105 g_free(myEngine); |
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106 return FALSE; |
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107 } |
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108 |
753 | 109 myStatus->internal = myEngine; |
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110 |
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111 /* Get current configuration */ |
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112 myEngine->currEng->getConfig(myEngine->currConfig); |
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113 |
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114 /* Configure channel parameters */ |
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115 switch (myStatus->audioChannels) { |
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116 |
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117 case XS_CHN_AUTOPAN: |
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118 myEngine->currConfig.channels = SIDEMU_STEREO; |
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119 myEngine->currConfig.autoPanning = SIDEMU_CENTEREDAUTOPANNING; |
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120 myEngine->currConfig.volumeControl = SIDEMU_FULLPANNING; |
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121 break; |
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122 |
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123 case XS_CHN_STEREO: |
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124 myEngine->currConfig.channels = SIDEMU_STEREO; |
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125 myEngine->currConfig.autoPanning = SIDEMU_NONE; |
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126 myEngine->currConfig.volumeControl = SIDEMU_NONE; |
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127 break; |
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128 |
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129 case XS_CHN_MONO: |
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130 default: |
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131 myEngine->currConfig.channels = SIDEMU_MONO; |
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132 myEngine->currConfig.autoPanning = SIDEMU_NONE; |
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133 myEngine->currConfig.volumeControl = SIDEMU_NONE; |
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134 myStatus->audioChannels = XS_CHN_MONO; |
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135 break; |
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136 } |
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137 |
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138 |
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139 /* Memory mode settings */ |
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140 switch (xs_cfg.memoryMode) { |
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141 case XS_MPU_TRANSPARENT_ROM: |
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142 myEngine->currConfig.memoryMode = MPU_TRANSPARENT_ROM; |
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143 break; |
71
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144 |
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145 case XS_MPU_PLAYSID_ENVIRONMENT: |
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146 myEngine->currConfig.memoryMode = MPU_PLAYSID_ENVIRONMENT; |
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147 break; |
71
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148 |
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149 case XS_MPU_BANK_SWITCHING: |
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150 default: |
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151 myEngine->currConfig.memoryMode = MPU_BANK_SWITCHING; |
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152 xs_cfg.memoryMode = XS_MPU_BANK_SWITCHING; |
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153 break; |
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154 } |
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155 |
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156 |
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157 /* Audio parameters sanity checking and setup */ |
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158 myEngine->currConfig.bitsPerSample = myStatus->audioBitsPerSample; |
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159 tmpFreq = myStatus->audioFrequency; |
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160 |
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161 if (tmpFreq > SIDPLAY1_MAX_FREQ) |
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162 tmpFreq = SIDPLAY1_MAX_FREQ; |
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163 |
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164 myEngine->currConfig.frequency = tmpFreq; |
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165 |
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166 switch (myStatus->audioBitsPerSample) { |
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167 case XS_RES_8BIT: |
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168 switch (myStatus->audioFormat) { |
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169 case FMT_S8: |
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170 myStatus->audioFormat = FMT_S8; |
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171 myEngine->currConfig.sampleFormat = SIDEMU_SIGNED_PCM; |
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172 break; |
127
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173 |
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174 case FMT_U8: |
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175 default: |
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176 myStatus->audioFormat = FMT_U8; |
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177 myEngine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; |
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178 break; |
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179 } |
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180 break; |
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181 |
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182 case XS_RES_16BIT: |
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183 default: |
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184 switch (myStatus->audioFormat) { |
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185 case FMT_U16_NE: |
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186 case FMT_U16_LE: |
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187 case FMT_U16_BE: |
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188 myStatus->audioFormat = FMT_U16_NE; |
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189 myEngine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; |
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190 break; |
364
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191 |
660
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192 case FMT_S16_NE: |
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193 case FMT_S16_LE: |
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194 case FMT_S16_BE: |
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195 default: |
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196 myStatus->audioFormat = FMT_S16_NE; |
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197 myEngine->currConfig.sampleFormat = SIDEMU_SIGNED_PCM; |
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198 break; |
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199 } |
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200 break; |
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201 } |
359
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202 |
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203 /* Clockspeed settings */ |
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204 switch (xs_cfg.clockSpeed) { |
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205 case XS_CLOCK_NTSC: |
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206 myEngine->currConfig.clockSpeed = SIDTUNE_CLOCK_NTSC; |
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207 break; |
368
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208 |
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209 case XS_CLOCK_PAL: |
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210 default: |
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211 myEngine->currConfig.clockSpeed = SIDTUNE_CLOCK_PAL; |
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212 xs_cfg.clockSpeed = XS_CLOCK_PAL; |
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213 break; |
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214 } |
368
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215 |
660
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216 myEngine->currConfig.forceSongSpeed = xs_cfg.forceSpeed; |
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217 |
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218 |
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219 /* Configure rest of the emulation */ |
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220 /* if (xs_cfg.forceModel) */ |
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221 myEngine->currConfig.mos8580 = xs_cfg.mos8580; |
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222 myEngine->currConfig.emulateFilter = xs_cfg.emulateFilters; |
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223 myEngine->currConfig.filterFs = xs_cfg.sid1Filter.fs; |
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224 myEngine->currConfig.filterFm = xs_cfg.sid1Filter.fm; |
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225 myEngine->currConfig.filterFt = xs_cfg.sid1Filter.ft; |
368
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226 |
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227 |
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228 /* Now set the emulator configuration */ |
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229 if (!myEngine->currEng->setConfig(myEngine->currConfig)) { |
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230 xs_error("[SIDPlay1] Emulator engine configuration failed!\n"); |
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231 return FALSE; |
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232 } |
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233 |
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234 /* Create sidtune object */ |
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235 myEngine->currTune = new sidTune(0); |
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236 if (!myEngine->currTune) { |
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237 xs_error("[SIDPlay1] Could not initialize SIDTune object.\n"); |
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238 return FALSE; |
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239 } |
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240 |
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241 return TRUE; |
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242 } |
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243 |
270
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244 |
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245 /* Close SIDPlay1 engine |
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246 */ |
751 | 247 void xs_sidplay1_close(XSEngineState * myStatus) |
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248 { |
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249 xs_sidplay1_t *myEngine; |
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250 assert(myStatus); |
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251 |
753 | 252 myEngine = (xs_sidplay1_t *) myStatus->internal; |
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253 |
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254 /* Free internals */ |
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255 if (myEngine->currEng) { |
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256 delete myEngine->currEng; |
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257 myEngine->currEng = NULL; |
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258 } |
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259 |
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260 if (myEngine->currTune) { |
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261 delete myEngine->currTune; |
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262 myEngine->currTune = NULL; |
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263 } |
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264 |
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265 xs_sidplay1_delete(myStatus); |
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266 |
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267 g_free(myEngine); |
753 | 268 myStatus->internal = NULL; |
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269 } |
270
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270 |
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271 |
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272 /* Initialize current song and sub-tune |
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273 */ |
751 | 274 gboolean xs_sidplay1_initsong(XSEngineState * myStatus) |
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275 { |
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276 xs_sidplay1_t *myEngine; |
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277 assert(myStatus); |
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278 |
753 | 279 myEngine = (xs_sidplay1_t *) myStatus->internal; |
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280 if (!myEngine) return FALSE; |
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281 |
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282 if (!myEngine->currTune) { |
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283 xs_error("[SIDPlay1] SID-tune struct pointer was NULL. This should not happen, report to XMMS-SID author.\n"); |
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284 return FALSE; |
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285 } |
270
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286 |
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287 if (!myEngine->currTune->getStatus()) { |
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288 xs_error("[SIDPlay1] SID-tune status check failed. This should not happen, report to XMMS-SID author.\n"); |
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289 return FALSE; |
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290 } |
359
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291 |
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292 myStatus->isInitialized = TRUE; |
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293 |
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294 return sidEmuInitializeSong(*myEngine->currEng, *myEngine->currTune, myStatus->currSong); |
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295 } |
270
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296 |
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297 |
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298 /* Emulate and render audio data to given buffer |
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299 */ |
751 | 300 guint xs_sidplay1_fillbuffer(XSEngineState * myStatus, gchar * audioBuffer, guint audioBufSize) |
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301 { |
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302 xs_sidplay1_t *myEngine; |
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303 assert(myStatus); |
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304 |
753 | 305 myEngine = (xs_sidplay1_t *) myStatus->internal; |
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306 if (!myEngine) return 0; |
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307 |
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308 sidEmuFillBuffer(*myEngine->currEng, *myEngine->currTune, audioBuffer, audioBufSize); |
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309 |
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310 return audioBufSize; |
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311 } |
270
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312 |
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313 |
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314 /* Load a given SID-tune file |
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315 */ |
751 | 316 gboolean xs_sidplay1_load(XSEngineState * myStatus, gchar * filename) |
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317 { |
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318 xs_sidplay1_t *myEngine; |
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319 assert(myStatus); |
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320 myStatus->isInitialized = FALSE; |
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321 |
753 | 322 myEngine = (xs_sidplay1_t *) myStatus->internal; |
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323 if (!myEngine) return FALSE; |
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324 |
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325 /* Try to get the tune */ |
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326 if (!filename) return FALSE; |
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327 |
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328 if (xs_fload_buffer(filename, &(myEngine->buf), &(myEngine->bufSize)) != 0) |
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329 return FALSE; |
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330 |
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331 if (!myEngine->currTune->load(myEngine->buf, myEngine->bufSize)) |
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332 return FALSE; |
71
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333 |
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334 return TRUE; |
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335 } |
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336 |
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337 |
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338 /* Delete INTERNAL information |
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339 */ |
751 | 340 void xs_sidplay1_delete(XSEngineState * myStatus) |
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341 { |
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342 xs_sidplay1_t *myEngine; |
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343 assert(myStatus); |
74 | 344 |
753 | 345 myEngine = (xs_sidplay1_t *) myStatus->internal; |
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346 if (!myEngine) return; |
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347 |
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348 g_free(myEngine->buf); |
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349 myEngine->buf = NULL; |
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350 myEngine->bufSize = 0; |
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351 } |
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352 |
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353 |
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354 } /* extern "C" */ |
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355 #endif /* HAVE_SIDPLAY1 */ |