Version 3.0

2026-01-16 14:21:53 +00:00 · 2013-09-25 11:21:51 +02:00
parent 7c0ee03d60
commit 868787a5f9
348 changed files with 12471 additions and 9135 deletions
--- a/STK/WavWvIn.cpp
+++ b/STK/WavWvIn.cpp
@@ -0,0 +1,103 @@
+/*******************************************/
+/*  WavWvIn Input Class,                   */
+/*  by Gary P. Scavone, 1999               */
+/*                                         */
+/*  This object inherits from WvIn and is  */
+/*  used to open DOS/Windows .wav 16-bit   */
+/*  data (signed integer) files for        */
+/*  playback.                              */
+/*                                         */
+/*  .wav files are always little-endian.   */
+/*******************************************/
+
+#include "WavWvIn.h"
+
+#ifndef __LITTLE_ENDIAN__
+  #include "swapstuf.h"
+#endif
+
+WavWvIn :: WavWvIn(char *fileName, char *mode)
+{
+  // Open the file and get header info
+  FILE *fd;
+  fd = fopen(fileName,"rb");
+  if (!fd)   {
+    printf("Couldn't open or find .wav file %s !!!\n",fileName);
+    exit(0);
+  }
+
+  // Make sure this is a .wav format file
+  char wave[4];
+  fseek(fd,8,SEEK_SET);   // Locate wave id
+  fread(&wave,4,1,fd);
+  if (strncmp(wave,"WAVE",4)) {
+    printf("This doesn't appear to be a .wav file %s !!!\n",fileName);
+    exit(0);
+  }
+
+  // Get number of channels from the header
+  INT16 temp;
+  fseek(fd,22,SEEK_SET);   // Locate channels in header
+  fread(&temp,2,1,fd);
+#ifndef __LITTLE_ENDIAN__
+  temp = SwapINT16(temp);
+#endif
+  channels = temp;
+
+  // Get length of data from the header
+  INT32 bytes;
+  fseek(fd,40,SEEK_SET);   // Locate data length in header
+  fread(&bytes,4,1,fd);
+#ifndef __LITTLE_ENDIAN__
+  bytes = SwapINT32(bytes);
+#endif
+  length = bytes / 2 / channels;   // length in 2-byte samples
+  data = (MY_FLOAT *) new MY_FLOAT[(length+1)*channels];
+
+  // Read samples into data[]
+  long i = 0;
+  while (fread(&temp,2,1,fd)) {
+#ifndef __LITTLE_ENDIAN__
+    temp = SwapINT16 (temp);
+#endif
+    data[i++] = (MY_FLOAT) temp;
+  }
+
+  // Get file sample rate from the header and set the default rate
+  INT32 srate;
+  fseek(fd,24,SEEK_SET);   // Locate sample rate in header
+  fread(&srate,4,1,fd);
+#ifndef __LITTLE_ENDIAN__
+  srate = SwapINT32(srate);
+#endif
+  rate = (MY_FLOAT) (srate/SRATE);    // set default rate based on file sampling rate
+  fclose(fd);
+
+  // Setup for looping or one-shot playback
+  if (!strcmp(mode,"looping")) {
+    looping = 1;
+    for (int j=0; j<channels; j++)
+      data[length*channels+j] = data[j];            // extra sample for interpolation
+  }
+  else if (!strcmp(mode,"oneshot")) {
+    looping = 0;
+    for (int j=0; j<channels; j++)
+      data[length*channels+j] = data[(length-1)*channels+j];  // extra sample for interpolation
+  }
+  else {
+    fprintf(stderr,"ERROR: Unsupported WavWvIn mode: %s\n",mode);
+    free(data);
+    exit(0);
+  }
+
+  if (fmod(rate, 1.0) > 0.0) interpolate = 1;
+  else interpolate = 0;
+  time = (MY_FLOAT) 0.0;
+  phaseOffset = (MY_FLOAT) 0.0;
+  finished = 0;
+  lastOutput = (MY_FLOAT *) calloc(channels, sizeof(MY_FLOAT));
+}
+
+WavWvIn :: ~WavWvIn()
+{
+}