Mercurial > hg > dmlib
annotate jssmix.h @ 96:6bf5220fa47e
Urgh .. use memset to silence some bogus GCC warnings about using
potentially uninitialized values, while that will not actually be possible.
In any case, it is annoying.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Tue, 02 Oct 2012 18:52:28 +0300 |
| parents | 2edda27f951c |
| children | 1ba202b448e0 |
| 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 | |
|
57
2edda27f951c
Silly interpolation in mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
56
diff
changeset
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19 |
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56
8725853609db
Remove the floating point mixing .. it wasn't so good idea after all.
Matti Hamalainen <ccr@tnsp.org>
parents:
51
diff
changeset
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20 #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
|
21 |
| 0 | 22 |
| 23 // A channel data structure | |
| 24 typedef struct | |
| 25 { | |
| 26 DMFixedPoint | |
| 27 chPos, // Current position in sample, 32:32 fixpoint | |
| 28 chDeltaO; // Delta in 32:32 UNSIGNED! (chDirection) | |
| 29 | |
| 30 int chFreq; // Frequency of sampel in Hz | |
|
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f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
31 Sint32 |
| 0 | 32 chSize, // Length of sample in UNITS |
| 33 chLoopS, // Loop start in UNITS | |
| 34 chLoopE; // Loop end in UNITS | |
| 35 | |
| 36 void *chData; // Pointer to data | |
| 37 | |
| 38 BOOL chPlaying, // TRUE = playing | |
| 39 chMute, // TRUE = muted | |
| 40 chDirection; // TRUE = playing forwards, FALSE = backwards | |
| 41 | |
| 42 int chFlags; // Flags | |
| 43 int chVolume, // Volume | |
| 44 chPanning; // Panning | |
| 45 | |
|
57
2edda27f951c
Silly interpolation in mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
56
diff
changeset
|
46 JMIXER_ADDBUF_TYPE chPrevR[5], chPrevL[5]; |
| 0 | 47 } JSSChannel; |
| 48 | |
| 49 | |
| 50 // Channel table | |
| 51 typedef int JSSChannelTable[jsetNChannels]; | |
| 52 | |
| 53 | |
| 54 // Virtual software mixer "device" structure | |
| 55 typedef struct _JSSMixer JSSMixer; | |
| 56 | |
| 57 struct _JSSMixer | |
| 58 { | |
| 59 int outFormat, | |
| 60 outChannels, | |
| 61 outFreq, | |
| 62 globalVol; | |
| 63 JSSChannel channels[jsetNChannels]; | |
| 64 | |
| 65 int addBufSize; | |
|
51
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
66 JMIXER_ADDBUF_TYPE *addBuffer; |
| 0 | 67 |
| 68 // Callback handling | |
| 69 int cbFreq, cbCounter; | |
| 70 void *cbData; | |
| 71 void (*cbFunction)(void *, void *); | |
| 72 | |
| 73 // Mixing routine pointers | |
|
51
36e2f910219c
A non-working implementation of floating point audio mixing.
Matti Hamalainen <ccr@tnsp.org>
parents:
49
diff
changeset
|
74 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
|
75 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
|
76 void (*jvmPostProcess)(JMIXER_ADDBUF_TYPE *, void *, const int); |
| 0 | 77 |
| 78 // Device locking | |
| 79 #ifdef JSS_SUP_THREADS | |
| 80 DMMutex *mutex; | |
| 81 #endif | |
| 82 }; | |
| 83 | |
| 84 | |
| 85 /* Enums | |
| 86 */ | |
| 87 enum { | |
| 88 JMIX_AUTO = 0, | |
| 89 JMIX_C, | |
| 90 JMIX_MMX, | |
| 91 JMIX_SSE | |
| 92 }; | |
| 93 | |
| 94 | |
| 95 /* Main routines | |
| 96 */ | |
| 97 JSSMixer * jvmInit(const int outFormat, const int nChannels, const int outFreq, const int mixerID); | |
| 98 int jvmClose(JSSMixer *mixer); | |
| 99 | |
| 100 int jvmSetCallback(JSSMixer *mixer, void (*cbFunction)(void *, void *), void *cbData); | |
| 101 void jvmRemoveCallback(JSSMixer *mixer); | |
| 102 int jvmSetCallbackFreq(JSSMixer *mixer, const int cbFreq); | |
|
36
f3407a58e01e
Change DMFixedPoint types and appropriate JSS functions back to using signed
Matti Hamalainen <ccr@tnsp.org>
parents:
0
diff
changeset
|
103 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
|
104 Sint32 jvmGetNextCBBufPos(JSSMixer *mixer, const int cbHandle); |
| 0 | 105 |
| 106 int jvmGetSampleSize(JSSMixer *mixer); | |
| 107 int jvmGetSampleRes(JSSMixer *mixer); | |
| 108 | |
| 109 void jvmRenderAudio(JSSMixer *mixer, void *mixBuffer, const int mixLength); | |
| 110 | |
| 111 | |
| 112 /* | |
| 113 int jvmAddCallback(JSSMixer *mixer, void (*cbFunction)(JSSMixer *, void *)); | |
| 114 int jvmRemoveCallback(JSSMixer *mixer, int cbHandle); | |
| 115 int jvmSetCallbackFreq(JSSMixer *mixer, int cbHandle, int cbFreq); | |
| 116 | |
| 117 int jvmAllocChannels(JSSMixer *mixer, int nChannels); | |
| 118 int jvmFreeChannels(JSSMixer *mixer, int iHandle); | |
| 119 int jvmGetChannelTable(JSSMixer *mixer, int iHandle, JSSChannelTable *pTable); | |
| 120 */ | |
| 121 | |
| 122 | |
| 123 /* Channel manipulation routines | |
| 124 */ | |
| 125 void jvmPlay(JSSMixer *mixer, const int channel); | |
| 126 void jvmStop(JSSMixer *mixer, const int channel); | |
| 127 | |
| 128 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
|
129 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
|
130 const Sint32 loopE, const int flags); |
| 0 | 131 |
| 132 void jvmSetFreq(JSSMixer *mixer, const int channel, const int freq); | |
| 133 int jvmGetFreq(JSSMixer *mixer, const int channel); | |
| 134 void jvmSetVolume(JSSMixer *mixer, const int channel, const int volume); | |
| 135 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
|
136 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
|
137 Sint32 jvmGetPos(JSSMixer *mixer, const int channel); |
| 0 | 138 |
| 139 void jvmSetPan(JSSMixer *mixer, const int channel, const int panning); | |
| 140 int jvmGetPan(JSSMixer *mixer, const int channel); | |
| 141 | |
| 142 void jvmMute(JSSMixer *mixer, const int channel, const BOOL mute); | |
| 143 | |
| 144 void jvmClear(JSSMixer *mixer, const int channel); | |
| 145 void jvmClearChannels(JSSMixer *mixer); | |
| 146 | |
| 147 void jvmSetGlobalVol(JSSMixer *mixer, const int volume); | |
| 148 int jvmGetGlobalVol(JSSMixer *mixer); | |
| 149 | |
| 150 | |
| 151 #endif // JSSMIX_H |