Mercurial > hg > dmlib
view jmixtmpl_c.h @ 510:43ea59887c69
Start work on making C64 formats encoding possible by changing DMDecodeOps
to DMEncDecOps and adding fields and op enums for custom encode functions, renaming,
etc. Split generic op sanity checking into a separate function in
preparation for its use in generic encoding function.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Mon, 19 Nov 2012 15:06:01 +0200 |
parents | 37382bee0619 |
children |
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/* * miniJSS - Mixing routine in C, innerloop template * Programmed and designed by Matti 'ccr' Hamalainen * (C) Copyright 2006-2007 Tecnic Software productions (TNSP) */ int JMIXER_NAME (JSSMixer *mixer, JSSChannel *chn, JMIXER_ADDBUF_TYPE *addBuffer, const int mixLength, const DMFixedPoint endPos) #ifdef JMIXER_HEADER ; #else { const DMFixedPoint tmpDelta = chn->chDeltaO, tmpDeltaV = chn->chDeltaV; DMFixedPoint tmpPos = chn->chPos, tmpVolume = chn->chVolume; JMIXER_ADDBUF_TYPE *ap = addBuffer, *tr = chn->chPrevR, *tl = chn->chPrevL; int strideLength = 0; JMIXER_SAMPLE_TYPE *sp = (JMIXER_SAMPLE_TYPE *) chn->chData; JMIXER_INIT if (chn->chVolumeD > 0) { const int tmpLength = chn->chVolumeD < mixLength ? chn->chVolumeD : mixLength; chn->chVolumeD -= tmpLength; while (strideLength < tmpLength && JMIXER_ENDCOND) { JMIXER_FUNC JMIXER_DEBUG JMIXER_NEXT FP_ADD(tmpVolume, tmpDeltaV); strideLength++; } } while (strideLength < mixLength && JMIXER_ENDCOND) { JMIXER_FUNC JMIXER_DEBUG JMIXER_NEXT strideLength++; } chn->chPos = tmpPos; chn->chVolume = tmpVolume; return strideLength; } #endif #undef JMIXER_NAME #undef JMIXER_NEXT #undef JMIXER_ENDCOND