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Annotation of Examples/SoundAndMusic/SoundLibrary/chaintest.c, revision 1.1

1.1     ! root        1: 
        !             2: /*
        !             3:  * chaintest.c - this test shows how to chain sounds together, such that the
        !             4:  * completion of one initiates another.
        !             5:  */ 
        !             6: 
        !             7: #import <sound/sound.h>
        !             8: #import <stdio.h>
        !             9: 
        !            10: #define BUF_SIZE 8192
        !            11: #define BUF_MAX 8
        !            12: 
        !            13: static int buf_ptr, buf_max;
        !            14: static SNDSoundStruct *buffers[BUF_MAX];
        !            15: 
        !            16: //
        !            17: // The termination function gets called when the previously played sound 
        !            18: // completes
        !            19: //
        !            20: int end(SNDSoundStruct *s, int tag, int err)
        !            21: {
        !            22:     if (err) fprintf(stderr,"error while playing sound %d\n",tag);
        !            23:     if (buf_ptr < buf_max) {
        !            24:        err = SNDStartPlaying(buffers[buf_ptr], buf_ptr, 5,0,0,end);
        !            25:        if (err) fprintf(stderr,"cannot start playing %d (%s)\n",buf_ptr,
        !            26:                                SNDSoundError(err));
        !            27:        buf_ptr++;
        !            28:     }
        !            29: }
        !            30: 
        !            31: main (int argc, char *argv[])
        !            32: {
        !            33:     int size, err, i, j;
        !            34:     int x = 0;
        !            35: 
        !            36:     if (argc < 2) {
        !            37:        fprintf(stderr,"usage: chaintest file ...\n");
        !            38:        exit(1);
        !            39:     }
        !            40:     if (argc >= BUF_MAX) {
        !            41:        fprintf(stderr,"too many files (max is %d)\n",BUF_MAX);
        !            42:        exit(1);
        !            43:     }
        !            44:     
        !            45:     //
        !            46:     // read the soundfiles into the buffers
        !            47:     //
        !            48:     for (j=1; j<argc; j++) {
        !            49:        err = SNDReadSoundfile(argv[j],&buffers[j]);
        !            50:        if (err) {
        !            51:            fprintf(stderr,"Error : %s\n",SNDSoundError(err));
        !            52:            exit(1);
        !            53:        }
        !            54:     }
        !            55:     
        !            56:     //
        !            57:     // Enqueue the first couple of files
        !            58:     //
        !            59:     buf_ptr = 1;
        !            60:     buf_max = argc;
        !            61:     for (j=1; j<3; j++) {
        !            62:        err = SNDStartPlaying(buffers[j],buf_ptr++,5,0,0,end);
        !            63:        if (err) {
        !            64:            fprintf(stderr,"Error : %s\n",SNDSoundError(err));
        !            65:            exit(1);
        !            66:        }
        !            67:     }
        !            68: 
        !            69:     //
        !            70:     // wait for everything to complete
        !            71:     //
        !            72:     SNDWait(0);
        !            73: 
        !            74:     exit(0);
        !            75: }
        !            76: 
        !            77: 
        !            78: 

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