Mercurial > hg > dmlib
annotate jssmix.h @ 56:8725853609db
Remove the floating point mixing .. it wasn't so good idea after all.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Mon, 01 Oct 2012 06:59:00 +0300 |
| parents | 36e2f910219c |
| children | 2edda27f951c |
| 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 | |
|
56
8725853609db
Remove the floating point mixing .. it wasn't so good idea after all.
Matti Hamalainen <ccr@tnsp.org>
parents:
51
diff
changeset
|
19 #define JMIXER_ADDBUF_TYPE Sint32 |
|
8725853609db
Remove the floating point mixing .. it wasn't so good idea after all.
Matti Hamalainen <ccr@tnsp.org>
parents:
51
diff
changeset
|
20 |
| 0 | 21 |
| 22 // A channel data structure | |
| 23 typedef struct | |
| 24 { | |
| 25 DMFixedPoint | |
| 26 chPos, // Current position in sample, 32:32 fixpoint | |
| 27 chDeltaO; // Delta in 32:32 UNSIGNED! (chDirection) | |
| 28 | |
| 29 int chFreq; // Frequency of sampel in Hz | |
|
36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
30 Sint32 |
| 0 | 31 chSize, // Length of sample in UNITS |
| 32 chLoopS, // Loop start in UNITS | |
| 33 chLoopE; // Loop end in UNITS | |
| 34 | |
| 35 void *chData; // Pointer to data | |
| 36 | |
| 37 BOOL chPlaying, // TRUE = playing | |
| 38 chMute, // TRUE = muted | |
| 39 chDirection; // TRUE = playing forwards, FALSE = backwards | |
| 40 | |
| 41 int chFlags; // Flags | |
| 42 int chVolume, // Volume | |
| 43 chPanning; // Panning | |
| 44 | |
|
51
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
45 JMIXER_ADDBUF_TYPE chPrevR, chPrevL; |
| 0 | 46 } JSSChannel; |
| 47 | |
| 48 | |
| 49 // Channel table | |
| 50 typedef int JSSChannelTable[jsetNChannels]; | |
| 51 | |
| 52 | |
| 53 // Virtual software mixer "device" structure | |
| 54 typedef struct _JSSMixer JSSMixer; | |
| 55 | |
| 56 struct _JSSMixer | |
| 57 { | |
| 58 int outFormat, | |
| 59 outChannels, | |
| 60 outFreq, | |
| 61 globalVol; | |
| 62 JSSChannel channels[jsetNChannels]; | |
| 63 | |
| 64 int addBufSize; | |
|
51
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
65 JMIXER_ADDBUF_TYPE *addBuffer; |
| 0 | 66 |
| 67 // Callback handling | |
| 68 int cbFreq, cbCounter; | |
| 69 void *cbData; | |
| 70 void (*cbFunction)(void *, void *); | |
| 71 | |
| 72 // Mixing routine pointers | |
|
51
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
73 int (*jvmMixChannel_FW)(JSSMixer *, JSSChannel *, JMIXER_ADDBUF_TYPE *, const int, const Sint32); |
|
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
74 int (*jvmMixChannel_BW)(JSSMixer *, JSSChannel *, JMIXER_ADDBUF_TYPE *, const int, const Sint32); |
|
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
75 void (*jvmPostProcess)(JMIXER_ADDBUF_TYPE *, void *, const int); |
| 0 | 76 |
| 77 // Device locking | |
| 78 #ifdef JSS_SUP_THREADS | |
| 79 DMMutex *mutex; | |
| 80 #endif | |
| 81 }; | |
| 82 | |
| 83 | |
| 84 /* Enums | |
| 85 */ | |
| 86 enum { | |
| 87 JMIX_AUTO = 0, | |
| 88 JMIX_C, | |
| 89 JMIX_MMX, | |
| 90 JMIX_SSE | |
| 91 }; | |
| 92 | |
| 93 | |
| 94 /* Main routines | |
| 95 */ | |
| 96 JSSMixer * jvmInit(const int outFormat, const int nChannels, const int outFreq, const int mixerID); | |
| 97 int jvmClose(JSSMixer *mixer); | |
| 98 | |
| 99 int jvmSetCallback(JSSMixer *mixer, void (*cbFunction)(void *, void *), void *cbData); | |
| 100 void jvmRemoveCallback(JSSMixer *mixer); | |
| 101 int jvmSetCallbackFreq(JSSMixer *mixer, const int cbFreq); | |
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36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
102 Sint32 jvmGetLastCBBufPos(JSSMixer *mixer, const int cbHandle); |
|
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
103 Sint32 jvmGetNextCBBufPos(JSSMixer *mixer, const int cbHandle); |
| 0 | 104 |
| 105 int jvmGetSampleSize(JSSMixer *mixer); | |
| 106 int jvmGetSampleRes(JSSMixer *mixer); | |
| 107 | |
| 108 void jvmRenderAudio(JSSMixer *mixer, void *mixBuffer, const int mixLength); | |
| 109 | |
| 110 | |
| 111 /* | |
| 112 int jvmAddCallback(JSSMixer *mixer, void (*cbFunction)(JSSMixer *, void *)); | |
| 113 int jvmRemoveCallback(JSSMixer *mixer, int cbHandle); | |
| 114 int jvmSetCallbackFreq(JSSMixer *mixer, int cbHandle, int cbFreq); | |
| 115 | |
| 116 int jvmAllocChannels(JSSMixer *mixer, int nChannels); | |
| 117 int jvmFreeChannels(JSSMixer *mixer, int iHandle); | |
| 118 int jvmGetChannelTable(JSSMixer *mixer, int iHandle, JSSChannelTable *pTable); | |
| 119 */ | |
| 120 | |
| 121 | |
| 122 /* Channel manipulation routines | |
| 123 */ | |
| 124 void jvmPlay(JSSMixer *mixer, const int channel); | |
| 125 void jvmStop(JSSMixer *mixer, const int channel); | |
| 126 | |
| 127 void jvmSetSample(JSSMixer *mixer, const int channel, | |
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36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
128 void *data, const Sint32 size, const Sint32 loopS, |
|
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
129 const Sint32 loopE, const int flags); |
| 0 | 130 |
| 131 void jvmSetFreq(JSSMixer *mixer, const int channel, const int freq); | |
| 132 int jvmGetFreq(JSSMixer *mixer, const int channel); | |
| 133 void jvmSetVolume(JSSMixer *mixer, const int channel, const int volume); | |
| 134 int jvmGetVolume(JSSMixer *mixer, const int channel); | |
|
36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
135 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
|
136 Sint32 jvmGetPos(JSSMixer *mixer, const int channel); |
| 0 | 137 |
| 138 void jvmSetPan(JSSMixer *mixer, const int channel, const int panning); | |
| 139 int jvmGetPan(JSSMixer *mixer, const int channel); | |
| 140 | |
| 141 void jvmMute(JSSMixer *mixer, const int channel, const BOOL mute); | |
| 142 | |
| 143 void jvmClear(JSSMixer *mixer, const int channel); | |
| 144 void jvmClearChannels(JSSMixer *mixer); | |
| 145 | |
| 146 void jvmSetGlobalVol(JSSMixer *mixer, const int volume); | |
| 147 int jvmGetGlobalVol(JSSMixer *mixer); | |
| 148 | |
| 149 | |
| 150 #endif // JSSMIX_H |