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annotate minijss/jmixtmpl_c.h @ 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 b52905e2788e
children
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1 /*
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2 * miniJSS - Mixing routine in C, innerloop template
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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 int JMIXER_NAME (JSSMixer *mixer, JSSChannel *chn, JMIXER_ADDBUF_TYPE *addBuffer, const int mixLength, const DMFixedPoint endPos)
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8 #ifdef JMIXER_HEADER
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9 ;
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10 #else
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11 {
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12 const DMFixedPoint tmpDelta = chn->chDeltaO, tmpDeltaV = chn->chDeltaV;
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13 DMFixedPoint tmpPos = chn->chPos,
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14 tmpVolume = chn->chVolume;
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15 JMIXER_ADDBUF_TYPE
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16 *ap = addBuffer,
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17 *tr = chn->chPrevR,
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18 *tl = chn->chPrevL;
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19 int strideLength = 0;
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20 (void) tr;
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21 (void) tl;
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23 JMIXER_SAMPLE_TYPE *sp = (JMIXER_SAMPLE_TYPE *) chn->chData;
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25 JMIXER_INIT
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27 if (chn->chVolumeD > 0)
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28 {
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29 const int tmpLength = chn->chVolumeD < mixLength ? chn->chVolumeD : mixLength;
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30 chn->chVolumeD -= tmpLength;
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31
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32 while (strideLength < tmpLength && JMIXER_ENDCOND)
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33 {
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34 JMIXER_FUNC
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35 JMIXER_DEBUG
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36 JMIXER_NEXT_RAMP
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37 strideLength++;
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38 }
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39 }
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41 while (strideLength < mixLength && JMIXER_ENDCOND)
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42 {
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43 JMIXER_FUNC
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44 JMIXER_DEBUG
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45 JMIXER_NEXT
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46 strideLength++;
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47 }
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49 chn->chPos = tmpPos;
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50 chn->chVolume = tmpVolume;
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51 return strideLength;
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52 }
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53 #endif
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55 #undef JMIXER_NAME
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56 #undef JMIXER_NEXT
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57 #undef JMIXER_NEXT_RAMP
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58 #undef JMIXER_ENDCOND
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