Mercurial > hg > dmlib
annotate jssmix.h @ 139:111f3e4b57ad
Improve volume ramping functionality to allow arbitrary length ramps.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Fri, 05 Oct 2012 09:25:59 +0300 |
| parents | 8ac24d753304 |
| children | 0c9438a2c72a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * miniJSS - Mixing device and channel handling | |
| 3 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 4 * (C) Copyright 2006-2012 Tecnic Software productions (TNSP) | |
| 5 */ | |
| 6 #ifndef JSSMIX_H | |
| 7 #define JSSMIX_H | |
| 8 #include "jss.h" | |
| 9 | |
| 10 //#define DBG(...) do { fprintf(stderr, __VA_ARGS__); } while (0) | |
| 11 #define DBG(...) do { /* stub */ } while (0) | |
| 12 | |
| 13 | |
| 14 // Mixing limits | |
| 15 #define JVM_LIMIT_16_POS (32767) | |
| 16 #define JVM_LIMIT_16_NEG (-32767) | |
| 17 #define JVM_ADD_16 (32768) | |
| 18 | |
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19 |
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20 #define JMIXER_ADDBUF_TYPE Sint32 |
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21 |
| 0 | 22 |
| 23 // A channel data structure | |
| 24 typedef struct | |
| 25 { | |
| 26 DMFixedPoint | |
| 27 chPos, // Current position in sample, 32:32 fixpoint | |
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28 chDeltaO, // Delta in 32:32 UNSIGNED! (chDirection) |
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29 chVolume, // Volume |
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30 chDeltaV, |
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31 chPanning, // Panning |
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32 chDeltaP; |
| 0 | 33 |
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34 int chVolumeD, |
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35 chPanningD; |
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36 |
| 0 | 37 int chFreq; // Frequency of sampel in Hz |
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38 Sint32 |
| 0 | 39 chSize, // Length of sample in UNITS |
| 40 chLoopS, // Loop start in UNITS | |
| 41 chLoopE; // Loop end in UNITS | |
| 42 | |
| 43 void *chData; // Pointer to data | |
| 44 | |
| 45 BOOL chPlaying, // TRUE = playing | |
| 46 chMute, // TRUE = muted | |
| 47 chDirection; // TRUE = playing forwards, FALSE = backwards | |
| 48 | |
| 49 int chFlags; // Flags | |
| 50 | |
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parents:
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changeset
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51 JMIXER_ADDBUF_TYPE chPrevR[5], chPrevL[5]; |
| 0 | 52 } JSSChannel; |
| 53 | |
| 54 | |
| 55 // Channel table | |
| 56 typedef int JSSChannelTable[jsetNChannels]; | |
| 57 | |
| 58 | |
| 59 // Virtual software mixer "device" structure | |
| 60 typedef struct _JSSMixer JSSMixer; | |
| 61 | |
| 62 struct _JSSMixer | |
| 63 { | |
| 64 int outFormat, | |
| 65 outChannels, | |
| 66 outFreq, | |
| 67 globalVol; | |
| 68 JSSChannel channels[jsetNChannels]; | |
| 69 | |
| 70 int addBufSize; | |
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71 JMIXER_ADDBUF_TYPE *addBuffer; |
| 0 | 72 |
| 73 // Callback handling | |
| 74 int cbFreq, cbCounter; | |
| 75 void *cbData; | |
| 76 void (*cbFunction)(void *, void *); | |
| 77 | |
| 78 // Mixing routine pointers | |
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79 int (*jvmMixChannel_FW)(JSSMixer *, JSSChannel *, JMIXER_ADDBUF_TYPE *, const int, const Sint32); |
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Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
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80 int (*jvmMixChannel_BW)(JSSMixer *, JSSChannel *, JMIXER_ADDBUF_TYPE *, const int, const Sint32); |
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Matti Hamalainen <ccr@tnsp.org>
parents:
49
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81 void (*jvmPostProcess)(JMIXER_ADDBUF_TYPE *, void *, const int); |
| 0 | 82 |
| 83 // Device locking | |
| 84 #ifdef JSS_SUP_THREADS | |
| 85 DMMutex *mutex; | |
| 86 #endif | |
| 87 }; | |
| 88 | |
| 89 | |
| 90 /* Enums | |
| 91 */ | |
| 92 enum { | |
| 93 JMIX_AUTO = 0, | |
| 94 JMIX_C, | |
| 95 JMIX_MMX, | |
| 96 JMIX_SSE | |
| 97 }; | |
| 98 | |
| 99 | |
| 100 /* Main routines | |
| 101 */ | |
| 136 | 102 JSSMixer * jvmInit(const int outFormat, const int outChannels, const int outFreq, const int mixerID); |
| 0 | 103 int jvmClose(JSSMixer *mixer); |
| 104 | |
| 105 int jvmSetCallback(JSSMixer *mixer, void (*cbFunction)(void *, void *), void *cbData); | |
| 106 void jvmRemoveCallback(JSSMixer *mixer); | |
| 107 int jvmSetCallbackFreq(JSSMixer *mixer, const int cbFreq); | |
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108 Sint32 jvmGetLastCBBufPos(JSSMixer *mixer, const int cbHandle); |
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109 Sint32 jvmGetNextCBBufPos(JSSMixer *mixer, const int cbHandle); |
| 0 | 110 |
| 111 int jvmGetSampleSize(JSSMixer *mixer); | |
| 112 int jvmGetSampleRes(JSSMixer *mixer); | |
| 113 | |
| 114 void jvmRenderAudio(JSSMixer *mixer, void *mixBuffer, const int mixLength); | |
| 115 | |
| 116 | |
| 117 /* | |
| 118 int jvmAddCallback(JSSMixer *mixer, void (*cbFunction)(JSSMixer *, void *)); | |
| 119 int jvmRemoveCallback(JSSMixer *mixer, int cbHandle); | |
| 120 int jvmSetCallbackFreq(JSSMixer *mixer, int cbHandle, int cbFreq); | |
| 121 | |
| 122 int jvmAllocChannels(JSSMixer *mixer, int nChannels); | |
| 123 int jvmFreeChannels(JSSMixer *mixer, int iHandle); | |
| 124 int jvmGetChannelTable(JSSMixer *mixer, int iHandle, JSSChannelTable *pTable); | |
| 125 */ | |
| 126 | |
| 127 | |
| 128 /* Channel manipulation routines | |
| 129 */ | |
| 130 void jvmPlay(JSSMixer *mixer, const int channel); | |
| 131 void jvmStop(JSSMixer *mixer, const int channel); | |
| 132 | |
| 133 void jvmSetSample(JSSMixer *mixer, const int channel, | |
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f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
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parents:
0
diff
changeset
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134 void *data, const Sint32 size, const Sint32 loopS, |
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Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
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135 const Sint32 loopE, const int flags); |
| 0 | 136 |
| 137 void jvmSetFreq(JSSMixer *mixer, const int channel, const int freq); | |
| 138 int jvmGetFreq(JSSMixer *mixer, const int channel); | |
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134
1ba202b448e0
Implement volume and panning ramps (interpolation between callbacks aka "frames")
Matti Hamalainen <ccr@tnsp.org>
parents:
57
diff
changeset
|
139 |
| 0 | 140 void jvmSetVolume(JSSMixer *mixer, const int channel, const int volume); |
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139
111f3e4b57ad
Improve volume ramping functionality to allow arbitrary length ramps.
Matti Hamalainen <ccr@tnsp.org>
parents:
136
diff
changeset
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141 void jvmSetVolumeRamp(JSSMixer * mixer, const int channel, const int start, const int end, const int len); |
| 0 | 142 int jvmGetVolume(JSSMixer *mixer, const int channel); |
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1ba202b448e0
Implement volume and panning ramps (interpolation between callbacks aka "frames")
Matti Hamalainen <ccr@tnsp.org>
parents:
57
diff
changeset
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143 |
|
36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
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144 void jvmSetPos(JSSMixer *mixer, const int channel, const Sint32 pos); |
|
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
145 Sint32 jvmGetPos(JSSMixer *mixer, const int channel); |
| 0 | 146 |
| 147 void jvmSetPan(JSSMixer *mixer, const int channel, const int panning); | |
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139
111f3e4b57ad
Improve volume ramping functionality to allow arbitrary length ramps.
Matti Hamalainen <ccr@tnsp.org>
parents:
136
diff
changeset
|
148 void jvmSetPanRamp(JSSMixer * mixer, const int channel, const int start, const int end, const int len); |
| 0 | 149 int jvmGetPan(JSSMixer *mixer, const int channel); |
| 150 | |
| 151 void jvmMute(JSSMixer *mixer, const int channel, const BOOL mute); | |
| 152 | |
| 153 void jvmClear(JSSMixer *mixer, const int channel); | |
| 154 void jvmClearChannels(JSSMixer *mixer); | |
| 155 | |
| 156 void jvmSetGlobalVol(JSSMixer *mixer, const int volume); | |
| 157 int jvmGetGlobalVol(JSSMixer *mixer); | |
| 158 | |
| 159 | |
| 160 #endif // JSSMIX_H |