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annotate minijss/jmix_c_in.c @ 2298:b5abfff07ca9

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Add new DMGrowBuf helper functions dmGrowBufCopyOffsSize() and dmGrowBufConstCopyOffsSize().
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 04 Jul 2019 10:54:16 +0300
parents 95eb6285f45c
children
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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 2006-2015 Tecnic Software productions (TNSP)
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5 */
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7 //#define JMIXER_DEBUG fprintf(stderr, "[%.8x:%.8x / %.8x]: %d\n", FP_GETH32(tmpPos), FP_GETL32(tmpPos), endPos, sp[FP_GETH32(tmpPos)]);
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8 #define JMIXER_DEBUG
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9 #define JMIXER_ADDBUF_TYPE Sint32
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12 /* Mono / Linear Interpolation
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13 */
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14 #define JMIXER_SAMPLE_TYPE Sint16
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15 #define JMIXER_INIT
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16 #define JMIXER_FUNC \
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17 const Sint32 vol = (FP_GETH32(tmpVolume) * mixer->globalVol) / 256; \
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18 memmove(&tl[0], &tl[1], 4 * sizeof(tl[0])); \
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19 tl[4] = (((Sint32) sp[FP_GETH32(tmpPos)]) * vol * 3 + tl[3] * 2 + tl[2] + tl[1] + tl[0]) / (256 * 8); \
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20 *(ap++) += tl[4];
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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_NEXT_RAMP FP_ADD(tmpPos, tmpDelta); FP_ADD(tmpVolume, tmpDeltaV);
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25 #define JMIXER_ENDCOND (tmpPos.dw < endPos.dw)
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26 #include "jmixtmpl_c.h"
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28 #define JMIXER_NAME jvmMix_Mono_C_BW
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29 #define JMIXER_NEXT FP_SUB(tmpPos, tmpDelta);
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30 #define JMIXER_NEXT_RAMP FP_SUB(tmpPos, tmpDelta); FP_ADD(tmpVolume, tmpDeltaV);
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31 #define JMIXER_ENDCOND (tmpPos.dw > endPos.dw)
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32 #include "jmixtmpl_c.h"
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35 #undef JMIXER_SAMPLE_TYPE
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36 #undef JMIXER_INIT
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37 #undef JMIXER_FUNC
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40 /* Stereo / Linear Interpolation
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41 */
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42 #define JMIXER_SAMPLE_TYPE Sint16
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43 #define JMIXER_INIT
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45 #define JMIXER_FUNC \
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46 const Sint32 vol_l = (FP_GETH32(tmpVolume) * mixer->globalVol) / 256, \
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47 vol_r = (FP_GETH32(tmpVolume) * mixer->globalVol) / 256; \
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48 memmove(&tl[0], &tl[1], 4 * sizeof(tl[0])); \
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49 memmove(&tr[0], &tr[1], 4 * sizeof(tr[0])); \
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50 tl[4] = (((Sint32) sp[FP_GETH32(tmpPos)]) * vol_l * 3 + tl[3] * 2 + tl[2] + tl[1] + tl[0]) / (256 * 8); \
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51 *(ap++) += tl[4]; \
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52 tr[4] = (((Sint32) sp[FP_GETH32(tmpPos)]) * vol_r * 3 + tr[3] * 2 + tr[2] + tr[1] + tr[0]) / (256 * 8); \
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53 *(ap++) += tr[4];
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55 #define JMIXER_NAME jvmMix_Stereo_C_FW
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56 #define JMIXER_NEXT FP_ADD(tmpPos, tmpDelta);
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57 #define JMIXER_NEXT_RAMP FP_ADD(tmpPos, tmpDelta); FP_ADD(tmpVolume, tmpDeltaV);
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58 #define JMIXER_ENDCOND (tmpPos.dw < endPos.dw)
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59 #include "jmixtmpl_c.h"
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61 #define JMIXER_NAME jvmMix_Stereo_C_BW
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62 #define JMIXER_NEXT FP_SUB(tmpPos, tmpDelta);
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63 #define JMIXER_NEXT_RAMP FP_SUB(tmpPos, tmpDelta); FP_ADD(tmpVolume, tmpDeltaV);
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64 #define JMIXER_ENDCOND (tmpPos.dw > endPos.dw)
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65 #include "jmixtmpl_c.h"
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68 #undef JMIXER_SAMPLE_TYPE
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69 #undef JMIXER_INIT
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70 #undef JMIXER_FUNC
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73 /* Post processing functions
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74 */
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75 #define JMIXER_CLAMP \
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76 if (t < JVM_LIMIT_16_NEG) t = JVM_LIMIT_16_NEG; else \
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77 if (t > JVM_LIMIT_16_POS) t = JVM_LIMIT_16_POS;
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79 #define JMIXER_NAME jvmPostProcess_U8_C
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80 #define JMIXER_TYPE Uint8
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81 #define JMIXER_FUNCTION *(sp++) = (t + JVM_ADD_16) >> 8;
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82 #include "jmix_post_c.h"
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85 #define JMIXER_NAME jvmPostProcess_S8_C
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86 #define JMIXER_TYPE Sint8
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87 #define JMIXER_FUNCTION *(sp++) = t >> 8;
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88 #include "jmix_post_c.h"
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91 #define JMIXER_NAME jvmPostProcess_U16_C
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92 #define JMIXER_TYPE Uint16
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93 #define JMIXER_FUNCTION *(sp++) = t + JVM_ADD_16;
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94 #include "jmix_post_c.h"
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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 *(sp++) = t;
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100 #include "jmix_post_c.h"