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annotate jmix_c.in.c @ 0:32250b436bca

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Initial re-import.
author Matti Hamalainen <ccr@tnsp.org>
date Fri, 28 Sep 2012 01:54:23 +0300
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1 /*
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2 * miniJSS - Mixing routines in C
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3 * Programmed and designed by Matti 'ccr' Hamalainen
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4 * (C) Copyright 2006-2007 Tecnic Software productions (TNSP)
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5 */
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6
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7 #define JMIXER_INTERPOLATE
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8 //#define JMIXER_DEBUG fprintf(stderr, "[%.8x:%.8x / %.8x]: %d\n", FP_GETH(tmpPos), FP_GETL(tmpPos), endPos, sp[FP_GETH(tmpPos)]);
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9 #define JMIXER_DEBUG
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10
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11 /* Mono / Linear Interpolation
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12 */
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13 #define JMIXER_INIT const Sint32 vol = (chn->chVolume * mixer->globalVol) / 256;
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14 #ifdef JMIXER_INTERPOLATE
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15 #define JMIXER_FUNC_16 tr = (((Sint32) sp[FP_GETH(tmpPos)]) * vol + tr) / (256 * 2); *(ap++) += tr;
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16 #define JMIXER_FUNC_8 tr = ((*volTab8)[vol][sp[FP_GETH(tmpPos)]] + tr) / 2; *(ap++) += tr;
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17 #else
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18 #define JMIXER_FUNC_16 *(ap++) += (((Sint32) sp[FP_GETH(tmpPos)]) * vol) / 256;
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19 #define JMIXER_FUNC_8 *(ap++) += (*volTab8)[vol][sp[FP_GETH(tmpPos)]];
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20 #endif
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21
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22 #define JMIXER_NAME jvmMix_Mono_C_FW
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23 #define JMIXER_NEXT FP_ADD(tmpPos, tmpDelta);
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24 #define JMIXER_ENDCOND (FP_GETH(tmpPos) < endPos)
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25 #include "jmix_c.h"
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26
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27 #define JMIXER_NAME jvmMix_Mono_C_BW
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28 #define JMIXER_NEXT FP_SUB(tmpPos, tmpDelta);
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29 #define JMIXER_ENDCOND (FP_GETH(tmpPos) > endPos)
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30 #include "jmix_c.h"
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31
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32 #undef JMIXER_INIT
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33 #undef JMIXER_FUNC_16
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34 #undef JMIXER_FUNC_8
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35
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36
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37 /* Stereo / Linear Interpolation
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38 */
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39 #define JMIXER_INIT const Sint32 vol_l = (chn->chVolume * mixer->globalVol) / 256, \
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40 vol_r = (chn->chVolume * mixer->globalVol) / 256;
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41 #ifdef JMIXER_INTERPOLATE
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42 #define JMIXER_FUNC_16 tl = (((Sint32) sp[FP_GETH(tmpPos)]) * vol_l + tl) / (256 * 2); *(ap++) += tl; \
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43 tr = (((Sint32) sp[FP_GETH(tmpPos)]) * vol_r + tr) / (256 * 2); *(ap++) += tr;
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44 #define JMIXER_FUNC_8 tl = ((*volTab8)[vol_l][sp[FP_GETH(tmpPos)]] + tl) / 2; *(ap++) += tl; \
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45 tr = ((*volTab8)[vol_r][sp[FP_GETH(tmpPos)]] + tr) / 2; *(ap++) += tr;
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46 #else
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47 #define JMIXER_FUNC_16 *(ap++) += (((Sint32) sp[FP_GETH(tmpPos)]) * vol_l) / 256; \
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48 *(ap++) += (((Sint32) sp[FP_GETH(tmpPos)]) * vol_r) / 256;
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49 #define JMIXER_FUNC_8 *(ap++) += (*volTab8)[vol_l][sp[FP_GETH(tmpPos)]]; \
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50 *(ap++) += (*volTab8)[vol_r][sp[FP_GETH(tmpPos)]];
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51 #endif
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52
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53 #define JMIXER_NAME jvmMix_Stereo_C_FW
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54 #define JMIXER_NEXT FP_ADD(tmpPos, tmpDelta);
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55 #define JMIXER_ENDCOND (FP_GETH(tmpPos) < endPos)
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56 #include "jmix_c.h"
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57
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58 #define JMIXER_NAME jvmMix_Stereo_C_BW
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59 #define JMIXER_NEXT FP_SUB(tmpPos, tmpDelta);
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60 #define JMIXER_ENDCOND (FP_GETH(tmpPos) > endPos)
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61 #include "jmix_c.h"
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62
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63 #undef JMIXER_INIT
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64 #undef JMIXER_FUNC_16
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65 #undef JMIXER_FUNC_8
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66
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67
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68 /* Post processing functions
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69 */
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70 #define JMIXER_NAME jvmPostProcess_U8_C
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71 #define JMIXER_TYPE Uint8
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72 #define JMIXER_FUNCTION \
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73 if (t < JVM_LIMIT_16_NEG) t = JVM_LIMIT_16_NEG; else \
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74 if (t > JVM_LIMIT_16_POS) t = JVM_LIMIT_16_POS; \
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75 *(sp++) = (t + JVM_ADD_16) >> 8;
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76 #include "jmix_post.h"
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77
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78
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79 #define JMIXER_NAME jvmPostProcess_S8_C
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80 #define JMIXER_TYPE Sint8
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81 #define JMIXER_FUNCTION \
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82 if (t < JVM_LIMIT_16_NEG) t = JVM_LIMIT_16_NEG; else \
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83 if (t > JVM_LIMIT_16_POS) t = JVM_LIMIT_16_POS; \
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84 *(sp++) = t >> 8;
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85 #include "jmix_post.h"
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86
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87
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88 #define JMIXER_NAME jvmPostProcess_U16_C
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89 #define JMIXER_TYPE Uint16
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90 #define JMIXER_FUNCTION \
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91 if (t < JVM_LIMIT_16_NEG) t = JVM_LIMIT_16_NEG; else \
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92 if (t > JVM_LIMIT_16_POS) t = JVM_LIMIT_16_POS; \
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93 *(sp++) = t + JVM_ADD_16;
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94 #include "jmix_post.h"
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95
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96
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97 #define JMIXER_NAME jvmPostProcess_S16_C
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98 #define JMIXER_TYPE Sint16
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99 #define JMIXER_FUNCTION \
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100 if (t < JVM_LIMIT_16_NEG) t = JVM_LIMIT_16_NEG; else \
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101 if (t > JVM_LIMIT_16_POS) t = JVM_LIMIT_16_POS; \
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102 *(sp++) = t;
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103 #include "jmix_post.h"