Browse Source

cmDspBuiltIn.c:Rewrote _cmDspAudioFileOutExec().

master
kevin 11 years ago
parent
commit
b467c7abd4
1 changed files with 25 additions and 26 deletions
  1. 25
    26
      dsp/cmDspBuiltIn.c

+ 25
- 26
dsp/cmDspBuiltIn.c View File

@@ -1298,47 +1298,44 @@ cmDspRC_t _cmDspAudioFileOutReset(cmDspCtx_t* ctx, cmDspInst_t* inst, const cmDs
1298 1298
   return rc;
1299 1299
 } 
1300 1300
 
1301
-
1302 1301
 cmDspRC_t _cmDspAudioFileOutExec(cmDspCtx_t* ctx, cmDspInst_t* inst, const cmDspEvt_t* evt )
1303 1302
 {
1304 1303
   cmDspRC_t            rc    = kOkDspRC;
1305 1304
   cmDspAudioFileOut_t* p     = (cmDspAudioFileOut_t*)inst;;
1306
-  unsigned             fpc   = cmDspSamplesPerCycle(ctx);
1307
-  unsigned             chCnt = cmDspUInt(inst,kChCntAofId);
1305
+  unsigned             chCnt = cmMin(2,cmDspUInt(inst,kChCntAofId));
1306
+  unsigned             smpCnt = 0;
1308 1307
   cmSample_t*          chArray[chCnt];
1309
-  unsigned             i;
1310
-
1311
-  // Assume that both channls have the same number of samples.
1312
-  // (cmAudioWriteFile() has the same constraint )
1313
-  int                  sn = cmDspAudioBufSmpCount(ctx,inst,kIn0AofId,0);
1314
-  
1315
-  // This code can handle the case where the input channels contain
1316
-  // more than or less than cmDspSamplesPerCycle().
1308
+  unsigned             i,j;
1317 1309
 
1318
-  while(sn>0)
1310
+  for(i=0,j=0; i<chCnt; ++i)
1319 1311
   {
1320
-    // we can process at most 'fpc' samples on one iteration
1321
-    unsigned n = cmMin(sn,fpc);
1322
-    sn -= n;
1312
+    unsigned          chVarId = i == 0 ? kIn0AofId : kIn1AofId;     // get audio buf var id for this ch
1313
+    unsigned          iSmpCnt = cmDspVarRows(inst,chVarId);
1323 1314
 
1324
-    // apply output gain
1325
-    for(i=0; i<chCnt; ++i)
1315
+    if( iSmpCnt == 0 )
1316
+    {
1317
+      chArray[j] = NULL;
1318
+    }
1319
+    else
1326 1320
     {
1327
-      chArray[i]            = p->smpBuf + i*fpc;
1328
-      const cmSample_t* sp  = i==0 ? cmDspAudioBuf(ctx,inst,kIn0AofId,0) : cmDspAudioBuf(ctx,inst,kIn1AofId,0);
1329
-      cmSample_t       gain = i==0 ? cmDspDouble(inst,kGain0AofId) : cmDspDouble(inst,kGain1AofId);
1321
+      cmSample_t gain = cmDspSample(inst,i==0?kGain0AofId:kGain1AofId); // get ch gain
1322
+    
1323
+      chArray[j] = cmDspAudioBuf(ctx,inst,chVarId,i);                   // get incoming audio buf ptr
1330 1324
 
1331
-      cmVOS_MultVVS(chArray[i], n, sp, (cmSample_t)gain);
1325
+      if( gain != 1.0 )
1326
+        cmVOS_MultVVS(chArray[j], iSmpCnt, chArray[j], gain);           // apply gain
1332 1327
 
1328
+      ++j;                                                              // incr chArray[] index
1329
+      assert( smpCnt==0 || iSmpCnt==smpCnt);                          
1330
+      smpCnt = iSmpCnt;                                                 // set outgoing sample count
1333 1331
     }
1334 1332
 
1335
-    // write the samples
1336
-    if( cmAudioFileWriteSample(p->afH, n, chCnt, chArray ) != kOkAfRC )
1337
-      rc = cmDspClassErr(ctx,inst->classPtr,kFileWriteFailDspRC,"An audio output file write failed.");
1338
-
1339
-    
1340 1333
   }
1341 1334
 
1335
+  // write the samples
1336
+  if( cmAudioFileWriteSample(p->afH, smpCnt, j, chArray ) != kOkAfRC )
1337
+    rc = cmDspClassErr(ctx,inst->classPtr,kFileWriteFailDspRC,"An audio output file write failed.");
1338
+
1342 1339
   return rc;
1343 1340
 }
1344 1341
 
@@ -5020,6 +5017,8 @@ cmDspClassConsFunc_t _cmDspClassBuiltInArray[] =
5020 5017
   cmMidiFilePlayClassCons,
5021 5018
   cmScFolClassCons,
5022 5019
   cmScModClassCons,
5020
+  cmGSwitchClassCons,
5021
+
5023 5022
   NULL,
5024 5023
 };
5025 5024
 

Loading…
Cancel
Save