mirror of
https://github.com/thestk/stk
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80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/*******************************************/
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/* RawWvIn Input Class, */
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/* by Gary P. Scavone, 1999 */
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/* */
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/* This object inherits from WvIn and is */
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/* used to open raw 16-bit data (signed */
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/* integer) files for playback. */
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/* */
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/* STK RawWave files are assumed to be */
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/* monaural and big-endian. */
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/*******************************************/
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#include "RawWvIn.h"
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#include <sys/stat.h>
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#include <sys/types.h>
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#ifdef __LITTLE_ENDIAN__
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#include "swapstuf.h"
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#endif
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RawWvIn :: RawWvIn(char *fileName, char *mode)
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{
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// Use the system call "stat" to determine the file length
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struct stat filestat;
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if (stat(fileName, &filestat) == -1)
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{ /* Opening file failed */
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fprintf(stderr,"Cannot access or find rawwave file: %s !!!\n",fileName);
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exit(0);
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}
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length = (long) filestat.st_size / 2; // length in 2-byte samples
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// Open the file and read samples into data[]
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FILE *fd;
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fd = fopen(fileName,"rb");
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if (!fd) {
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printf("Couldn't open or find rawwave file %s !!!\n",fileName);
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exit(0);
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}
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channels = 1; // All STK rawwave files are mono
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data = (MY_FLOAT *) new MY_FLOAT[(length+1)*channels];
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long i = 0;
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INT16 temp;
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fseek(fd,0,SEEK_SET); // Only here to bypass bug in Linux glibc 2.1x (RedHat 6.0)
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while (fread(&temp,2,1,fd)) {
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#ifdef __LITTLE_ENDIAN__
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temp = SwapINT16 (temp);
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#endif
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data[i++] = (MY_FLOAT) temp;
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}
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fclose(fd);
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// Setup for looping or one-shot playback
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if (!strcmp(mode,"looping")) {
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looping = 1;
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data[length] = data[0]; // extra sample for interpolation
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}
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else if (!strcmp(mode,"oneshot")) {
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looping = 0;
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data[length] = data[length-1]; // extra sample for interpolation
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}
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else {
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fprintf(stderr,"ERROR: Unsupported RawWvIn mode: %s\n",mode);
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free(data);
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exit(0);
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}
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time = (MY_FLOAT) 0.0;
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phaseOffset = (MY_FLOAT) 0.0;
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rate = (MY_FLOAT) 1.0;
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interpolate = 0;
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finished = 0;
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lastOutput = (MY_FLOAT *) calloc(channels, sizeof(MY_FLOAT));
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}
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RawWvIn :: ~RawWvIn()
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{
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}
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