Mercurial > hg > dmlib

annotate dmengine.c @ 573:14640d0688d3

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Make timeline stuff optional.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 05 Apr 2013 00:32:06 +0300
parents a7ee3567f718
children 0888971cbff8
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1 #include "dmengine.h"
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2 #include "dmimage.h"
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3
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4
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5 #ifdef DM_USE_TREMOR
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6 #include <tremor/ivorbiscodec.h>
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7 #include <tremor/ivorbisfile.h>
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8 #endif
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9
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10
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11 DMEngineData engine;
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12 DMEffect *engineEffects = NULL;
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13 int nengineEffects = 0, nengineEffectsAlloc = 0;
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14
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15
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16 int engineRegisterEffect(const DMEffect *ef)
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17 {
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18 if (ef == NULL)
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19 return DMERR_NULLPTR;
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20
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21 // Allocate more space for effects
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22 if (nengineEffects + 1 >= nengineEffectsAlloc)
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23 {
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24 nengineEffectsAlloc += 16;
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25 engineEffects = dmRealloc(engineEffects, sizeof(DMEffect) * nengineEffectsAlloc);
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26 if (engineEffects == NULL)
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27 {
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28 dmError("Could not expand effects structure.\n");
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29 return DMERR_INIT_FAIL;
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30 }
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31 }
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32
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33 // Copy effects structure
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34 memcpy(engineEffects + nengineEffects, ef, sizeof(DMEffect));
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35 nengineEffects++;
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36
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37 return DMERR_OK;
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38 }
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39
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40
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41 int engineInitializeEffects(DMEngineData *engine)
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42 {
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43 int i, res;
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44
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45 dmFree(engine->effectData);
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46 engine->effectData = dmCalloc(nengineEffectsAlloc, sizeof(void *));
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47 if (engine->effectData == NULL)
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48 {
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49 dmError("Could not expand effects data structure.\n");
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50 return DMERR_INIT_FAIL;
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51 }
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52
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53 for (i = 0; i < nengineEffects; i++)
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54 {
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55 if (engineEffects[i].init != NULL &&
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56 (res = engineEffects[i].init(engine, &(engine->effectData[i]))) != DMERR_OK)
368
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57 return res;
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58 }
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59
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60 return DMERR_OK;
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61 }
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62
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63
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64 void engineShutdownEffects(DMEngineData *engine)
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65 {
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66 if (engine != NULL && engine->effectData != NULL)
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67 {
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68 int i;
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69 for (i = 0; i < nengineEffects; i++)
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70 {
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71 if (engineEffects[i].shutdown != NULL)
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72 engineEffects[i].shutdown(engine, engine->effectData[i]);
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73 }
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74 dmFree(engine->effectData);
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75 engine->effectData = NULL;
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76 }
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77 }
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78
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79
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80 DMEffect *engineFindEffect(const char *name, const int nparams)
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81 {
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82 int i;
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83 for (i = 0; i < nengineEffects; i++)
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84 {
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85 if (strcmp(engineEffects[i].name, name) == 0 &&
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86 engineEffects[i].nparams == nparams)
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87 return &engineEffects[i];
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88 }
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89 return NULL;
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90 }
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91
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92
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93 DMEffect *engineFindEffectByName(const char *name)
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94 {
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95 int i;
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96 for (i = 0; i < nengineEffects; i++)
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97 {
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98 if (strcmp(engineEffects[i].name, name) == 0)
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99 return &engineEffects[i];
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100 }
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101 return NULL;
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102 }
342
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103
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104
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105 static int engineResImageLoad(DMResource *res)
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106 {
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107 SDL_Surface *img = dmLoadImage(res);
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108 if (res != NULL)
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109 {
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110 res->rdata = img;
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111 return DMERR_OK;
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112 }
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113 else
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114 return dmferror(res);
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115 }
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116
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117
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118 static void engineResImageFree(DMResource *res)
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119 {
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120 SDL_FreeSurface((SDL_Surface *)res->rdata);
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121 }
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122
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123 static BOOL engineResImageProbe(DMResource *res, const char *fext)
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124 {
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125 (void) res;
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126 return fext != NULL && (strcasecmp(fext, ".jpg") == 0 || strcasecmp(fext, ".png") == 0);
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127 }
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128
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129
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130 #ifdef JSS_SUP_XM
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131 static int engineResModuleLoad(DMResource *res)
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132 {
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133 return jssLoadXM(res, (JSSModule **) &(res->rdata));
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134 }
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135
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136 static void engineResModuleFree(DMResource *res)
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137 {
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138 jssFreeModule((JSSModule *) res->rdata);
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139 }
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140
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141 static BOOL engineResModuleProbe(DMResource *res, const char *fext)
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142 {
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143 (void) res;
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144 return fext != NULL && (strcasecmp(fext, ".xm") == 0 || strcasecmp(fext, ".jmod") == 0);
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145 }
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146 #endif
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147
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148
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149 #ifdef DM_USE_TREMOR
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150 static size_t vorbisFileRead(void *ptr, size_t size, size_t nmemb, void *datasource)
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151 {
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152 return dmfread(ptr, size, nmemb, (DMResource *) datasource);
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153 }
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154
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155 static int vorbisFileSeek(void *datasource, ogg_int64_t offset, int whence)
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156 {
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157 return dmfseek((DMResource *) datasource, offset, whence);
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158 }
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159
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160 static int vorbisFileClose(void *datasource)
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161 {
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162 (void) datasource;
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163 return 0;
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164 }
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165
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166 static long vorbisFileTell(void *datasource)
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167 {
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168 return dmftell((DMResource *) datasource);
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169 }
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170
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171
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172 static ov_callbacks vorbisFileCBS =
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173 {
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174 vorbisFileRead,
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175 vorbisFileSeek,
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176 vorbisFileClose,
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177 vorbisFileTell
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178 };
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179
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180 static int engineResVorbisLoad(DMResource *res)
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181 {
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182 OggVorbis_File vf;
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183
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184 dmMsg(1, "vorbisfile '%s', %d bytes resource loading\n",
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185 res->filename, res->dataSize);
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186
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187 if (ov_open_callbacks(res, &vf, NULL, 0, vorbisFileCBS) < 0)
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188 return DMERR_FOPEN;
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189
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190 res->rdataSize = ov_pcm_total(&vf, -1) * 2 * 2;
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191 if ((res->rdata = dmMalloc(res->rdataSize + 16)) == NULL)
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192 {
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193 ov_clear(&vf);
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194 return DMERR_MALLOC;
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195 }
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196
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197 dmMsg(1, "rdataSize=%d bytes?\n", res->rdataSize);
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198
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199 BOOL eof = FALSE;
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200 int left = res->rdataSize;
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201 char *ptr = res->rdata;
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202 int current_section;
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203 while (!eof && left > 0)
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204 {
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205 int ret = ov_read(&vf, ptr, left > 4096 ? 4096 : left, &current_section);
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206 if (ret == 0)
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diff changeset
207 eof = TRUE;
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208 else
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parents:
diff changeset
209 if (ret < 0)
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210 {
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211 ov_clear(&vf);
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212 return DMERR_INVALID_DATA;
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parents:
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213 }
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parents:
diff changeset
214 else
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parents:
diff changeset
215 {
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parents:
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216 left -= ret;
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217 ptr += ret;
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parents:
diff changeset
218 }
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parents:
diff changeset
219 }
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parents:
diff changeset
220
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221 ov_clear(&vf);
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222 return DMERR_OK;
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parents:
diff changeset
223 }
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parents:
diff changeset
224
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225 static void engineResVorbisFree(DMResource *res)
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226 {
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diff changeset
227 dmFree(res->rdata);
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parents:
diff changeset
228 }
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parents:
diff changeset
229
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230 static BOOL engineResVorbisProbe(DMResource *res, const char *fext)
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parents:
diff changeset
231 {
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diff changeset
232 (void) res;
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233 return fext != NULL && (strcasecmp(fext, ".ogg") == 0);
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parents:
diff changeset
234 }
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parents:
diff changeset
235 #endif
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parents:
diff changeset
236
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
237
c6ec970dc3cf Separate some demo engine parts to two different modules.
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diff changeset
238 static DMResourceDataOps engineResOps[] =
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parents:
diff changeset
239 {
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Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
240 {
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parents:
diff changeset
241 engineResImageProbe,
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parents:
diff changeset
242 engineResImageLoad,
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parents:
diff changeset
243 engineResImageFree
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parents:
diff changeset
244 },
c6ec970dc3cf Separate some demo engine parts to two different modules.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
245
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
246 #ifdef JSS_SUP_XM
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parents:
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247 {
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parents:
diff changeset
248 engineResModuleProbe,
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parents:
diff changeset
249 engineResModuleLoad,
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parents:
diff changeset
250 engineResModuleFree
c6ec970dc3cf Separate some demo engine parts to two different modules.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
251 },
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
252 #endif
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
253
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
254 #ifdef DM_USE_TREMOR
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parents:
diff changeset
255 {
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
256 engineResVorbisProbe,
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
257 engineResVorbisLoad,
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parents:
diff changeset
258 engineResVorbisFree
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
259 },
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
260 #endif
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
261 };
c6ec970dc3cf Separate some demo engine parts to two different modules.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
262
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
263 static const int nengineResOps = sizeof(engineResOps) / sizeof(engineResOps[0]);
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
264
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
265
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
266 int engineClassifier(DMResource *res)
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parents:
diff changeset
267 {
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diff changeset
268 int i;
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
269 char *fext;
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parents:
diff changeset
270
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
271 if (res == NULL)
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parents:
diff changeset
272 return DMERR_NULLPTR;
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parents:
diff changeset
273
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
274 fext = strrchr(res->filename, '.');
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parents:
diff changeset
275 for (i = 0; i < nengineResOps; i++)
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parents:
diff changeset
276 {
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diff changeset
277 DMResourceDataOps *rops = &engineResOps[i];
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diff changeset
278 if (rops->probe != NULL && rops->probe(res, fext))
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parents:
diff changeset
279 {
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parents:
diff changeset
280 res->rops = rops;
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
281 return DMERR_OK;
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
282 }
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
283 }
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
284
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
285 return DMERR_OK;
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parents:
diff changeset
286 }
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
287
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
288
366
38e10b5f4e09 Work towards base engine re-entrancy.
Matti Hamalainen <ccr@tnsp.org>
parents: 359
diff changeset
289 void *engineGetResource(DMEngineData *eng, const char *name)
342
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
290 {
366
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Matti Hamalainen <ccr@tnsp.org>
parents: 359
diff changeset
291 DMResource *res;
38e10b5f4e09 Work towards base engine re-entrancy.
Matti Hamalainen <ccr@tnsp.org>
parents: 359
diff changeset
292 if (eng != NULL &&
38e10b5f4e09 Work towards base engine re-entrancy.
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parents: 359
diff changeset
293 (res = dmres_find(eng->resources, name)) != NULL &&
38e10b5f4e09 Work towards base engine re-entrancy.
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parents: 359
diff changeset
294 res->rdata != NULL)
342
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
295 return res->rdata;
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
296 else
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
297 {
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parents:
diff changeset
298 dmError("Could not find resource '%s'.\n", name);
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parents:
diff changeset
299 return NULL;
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parents:
diff changeset
300 }
c6ec970dc3cf Separate some demo engine parts to two different modules.
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parents:
diff changeset
301 }
c6ec970dc3cf Separate some demo engine parts to two different modules.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
302
c6ec970dc3cf Separate some demo engine parts to two different modules.
Matti Hamalainen <ccr@tnsp.org>
parents:
diff changeset
303
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304 #ifdef DM_USE_JSS
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305 void engineGetJSSInfo(DMEngineData *eng, BOOL *playing, int *order, JSSPattern **pat, int *npattern, int *row)
342
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306 {
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307 JSS_LOCK(eng->plr);
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308
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309 *playing = eng->plr->isPlaying;
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310 *row = eng->plr->row;
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311 *pat = eng->plr->pattern;
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312 *npattern = eng->plr->npattern;
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313 *order = eng->plr->order;
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314
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315 JSS_UNLOCK(eng->plr);
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316 }
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317
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318 void engineGetJSSChannelInfo(DMEngineData *eng, const int channel, int *ninst, int *nextInst, int *freq, int *note)
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319 {
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320 JSS_LOCK(eng->plr);
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321 JSSPlayerChannel *chn = &(eng->plr->channels[channel]);
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322 *ninst = chn->ninstrument;
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323 *nextInst = chn->nextInstrument;
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324 *freq = chn->freq;
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325 *note = chn->note;
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326 JSS_UNLOCK(eng->plr);
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327 }
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328 #endif
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329
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330
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331 int engineGetTick(DMEngineData *engine)
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332 {
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333 return engine->frameTime - engine->startTime;
367
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334 }
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335
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336
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337 float engineGetTimeDT(DMEngineData *engine)
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338 {
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339 return (float) engineGetTick(engine) / 1000.0f;
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340 }
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341
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342
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343 int engineGetTimeDTi(DMEngineData *engine)
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344 {
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345 return (float) engineGetTick(engine) / 1000;
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346 }
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347
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348
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349 int engineGetTime(DMEngineData *engine, int t)
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350 {
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351 return engineGetTick(engine) - (1000 * t);
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352 }
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353
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354
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355 int engineGetDT(DMEngineData *engine, int t)
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356 {
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357 return engineGetTime(engine, t) / 1000;
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358 }