Mercurial > hg > xmms-sid
annotate src/xs_sidplay1.cc @ 791:0995fa233462
Remove useless state variable.
author | Matti Hamalainen <ccr@tnsp.org> |
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date | Tue, 06 Nov 2012 16:34:06 +0200 |
parents | 5eee092d1b13 |
children | b158abe91a75 |
rev | line source |
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71
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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" |
71
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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 { |
764 | 41 emuEngine *emu; |
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42 emuConfig currConfig; |
764 | 43 sidTune *tune; |
660
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44 guint8 *buf; |
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45 size_t bufSize; |
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46 } XSSIDPlay1; |
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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 | |
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59 #define TENGINE XSSIDPlay1 |
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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 |
75
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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 */ |
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83 gboolean xs_sidplay1_init(XSEngineState * state) |
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84 { |
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85 gint tmpFreq; |
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86 XSSIDPlay1 *engine; |
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87 assert(state); |
359
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88 |
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89 /* Allocate internal structures */ |
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90 engine = (XSSIDPlay1 *) g_malloc0(sizeof(XSSIDPlay1)); |
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91 if (!engine) return FALSE; |
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92 |
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93 /* Initialize engine */ |
764 | 94 engine->emu = new emuEngine(); |
95 if (!engine->emu) { | |
660
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96 xs_error("[SIDPlay1] Could not initialize emulation engine.\n"); |
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97 g_free(engine); |
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98 return FALSE; |
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99 } |
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100 |
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101 /* Verify endianess */ |
764 | 102 if (!engine->emu->verifyEndianess()) { |
660
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103 xs_error("[SIDPlay1] Endianess verification failed.\n"); |
764 | 104 delete engine->emu; |
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105 g_free(engine); |
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106 return FALSE; |
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107 } |
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108 |
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109 state->internal = engine; |
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110 |
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111 /* Get current configuration */ |
764 | 112 engine->emu->getConfig(engine->currConfig); |
71
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113 |
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114 /* Configure channel parameters */ |
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115 switch (state->audioChannels) { |
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116 |
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117 case XS_CHN_AUTOPAN: |
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118 engine->currConfig.channels = SIDEMU_STEREO; |
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119 engine->currConfig.autoPanning = SIDEMU_CENTEREDAUTOPANNING; |
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120 engine->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 engine->currConfig.channels = SIDEMU_STEREO; |
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125 engine->currConfig.autoPanning = SIDEMU_NONE; |
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126 engine->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 engine->currConfig.channels = SIDEMU_MONO; |
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132 engine->currConfig.autoPanning = SIDEMU_NONE; |
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133 engine->currConfig.volumeControl = SIDEMU_NONE; |
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134 state->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 engine->currConfig.memoryMode = MPU_TRANSPARENT_ROM; |
660
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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 engine->currConfig.memoryMode = MPU_PLAYSID_ENVIRONMENT; |
660
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147 break; |
71
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148 |
660
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149 case XS_MPU_BANK_SWITCHING: |
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150 default: |
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151 engine->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 |
660
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157 /* Audio parameters sanity checking and setup */ |
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158 engine->currConfig.bitsPerSample = state->audioBitsPerSample; |
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159 tmpFreq = state->audioFrequency; |
359
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160 |
748
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161 if (tmpFreq > SIDPLAY1_MAX_FREQ) |
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162 tmpFreq = SIDPLAY1_MAX_FREQ; |
270
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163 |
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164 engine->currConfig.frequency = tmpFreq; |
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165 |
754
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166 switch (state->audioBitsPerSample) { |
660
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167 case XS_RES_8BIT: |
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168 switch (state->audioFormat) { |
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169 case FMT_S8: |
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170 state->audioFormat = FMT_S8; |
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171 engine->currConfig.sampleFormat = SIDEMU_SIGNED_PCM; |
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172 break; |
127
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173 |
660
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174 case FMT_U8: |
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175 default: |
754
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176 state->audioFormat = FMT_U8; |
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177 engine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; |
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178 break; |
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179 } |
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180 break; |
359
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181 |
660
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182 case XS_RES_16BIT: |
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183 default: |
754
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184 switch (state->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 state->audioFormat = FMT_U16_NE; |
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189 engine->currConfig.sampleFormat = SIDEMU_UNSIGNED_PCM; |
660
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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: |
754
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196 state->audioFormat = FMT_S16_NE; |
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197 engine->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 |
660
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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 engine->currConfig.clockSpeed = SIDTUNE_CLOCK_NTSC; |
660
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207 break; |
368
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208 |
660
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209 case XS_CLOCK_PAL: |
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210 default: |
754
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211 engine->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 |
754
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216 engine->currConfig.forceSongSpeed = xs_cfg.forceSpeed; |
660
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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) */ |
754
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221 engine->currConfig.mos8580 = xs_cfg.mos8580; |
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222 engine->currConfig.emulateFilter = xs_cfg.emulateFilters; |
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223 engine->currConfig.filterFs = xs_cfg.sid1Filter.fs; |
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224 engine->currConfig.filterFm = xs_cfg.sid1Filter.fm; |
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225 engine->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 */ |
764 | 229 if (!engine->emu->setConfig(engine->currConfig)) { |
660
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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 */ |
764 | 235 engine->tune = new sidTune(0); |
236 if (!engine->tune) { | |
660
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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 */ |
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247 void xs_sidplay1_close(XSEngineState * state) |
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248 { |
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249 XSSIDPlay1 *engine; |
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250 assert(state); |
270
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251 |
756
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252 engine = (XSSIDPlay1 *) state->internal; |
270
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253 |
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254 /* Free internals */ |
764 | 255 if (engine->emu) { |
256 delete engine->emu; | |
257 engine->emu = NULL; | |
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258 } |
359
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259 |
764 | 260 if (engine->tune) { |
261 delete engine->tune; | |
262 engine->tune = NULL; | |
660
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263 } |
527
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264 |
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265 xs_sidplay1_delete(state); |
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266 |
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267 g_free(engine); |
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268 state->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 */ |
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274 gboolean xs_sidplay1_initsong(XSEngineState * state) |
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275 { |
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276 XSSIDPlay1 *engine; |
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277 assert(state); |
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278 |
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279 engine = (XSSIDPlay1 *) state->internal; |
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280 if (!engine) return FALSE; |
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281 |
764 | 282 if (!engine->tune) { |
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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 } |
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286 |
764 | 287 if (!engine->tune->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 |
764 | 292 return sidEmuInitializeSong(*engine->emu, *engine->tune, state->currSong); |
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293 } |
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294 |
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295 |
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296 /* Emulate and render audio data to given buffer |
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297 */ |
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298 guint xs_sidplay1_fillbuffer(XSEngineState * state, gchar * audioBuffer, guint audioBufSize) |
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299 { |
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300 XSSIDPlay1 *engine; |
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301 assert(state); |
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302 |
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303 engine = (XSSIDPlay1 *) state->internal; |
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304 if (!engine) return 0; |
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305 |
764 | 306 sidEmuFillBuffer(*engine->emu, *engine->tune, audioBuffer, audioBufSize); |
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307 |
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308 return audioBufSize; |
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309 } |
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310 |
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311 |
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312 /* Load a given SID-tune file |
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313 */ |
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314 gboolean xs_sidplay1_load(XSEngineState * state, gchar * filename) |
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315 { |
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316 XSSIDPlay1 *engine; |
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317 assert(state); |
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318 |
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319 engine = (XSSIDPlay1 *) state->internal; |
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320 if (!engine) return FALSE; |
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321 |
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322 /* Try to get the tune */ |
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323 if (!filename) return FALSE; |
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324 |
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325 if (xs_fload_buffer(filename, &(engine->buf), &(engine->bufSize)) != 0) |
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326 return FALSE; |
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327 |
764 | 328 if (!engine->tune->load(engine->buf, engine->bufSize)) |
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329 return FALSE; |
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330 |
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331 return TRUE; |
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332 } |
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333 |
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334 |
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335 /* Delete INTERNAL information |
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336 */ |
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337 void xs_sidplay1_delete(XSEngineState * state) |
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338 { |
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339 XSSIDPlay1 *engine; |
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340 assert(state); |
74 | 341 |
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342 engine = (XSSIDPlay1 *) state->internal; |
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343 if (!engine) return; |
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344 |
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345 g_free(engine->buf); |
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346 engine->buf = NULL; |
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347 engine->bufSize = 0; |
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348 } |
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349 |
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350 |
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351 } /* extern "C" */ |
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352 #endif /* HAVE_SIDPLAY1 */ |