#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sox.h>
#include <limits.h>

// use this program with
// https://s3.amazonaws.com/superjoe/temp/02a7a451c263b29c79e43ef3ae7c8538.wmv
// to demonstrate as sox issue

// it should run and spam the console with a bunch of output and then quit
// instead it hangs forever at 100% CPU

int main(int argc, char * argv[]) {
    char * in_file_path = argv[1];

    sox_format_init();
    sox_format_t * input = sox_open_read(in_file_path, NULL, NULL, NULL);
    if (! input) {
        fprintf(stderr, "Unrecognized audio format for input file: %s\n", in_file_path);
        return 1;
    }
    int channel_count = input->signal.channels;
    int frame_count = input->signal.length;

    // allocate memory to read from library
    printf("allocate sox memory\n");
    const int buffer_frame_count = 2048;
    size_t frames_size = sizeof(sox_sample_t) * channel_count * buffer_frame_count;
    sox_sample_t * frames = (sox_sample_t *) malloc(frames_size);
    if (! frames) {
        fprintf(stderr, "Out of memory.");
        return 1;
    }

    if (frame_count == 0) {
        printf("frame count scan sox open read\n");
        // scan for the duration
        sox_format_t * input2 = sox_open_read(in_file_path, NULL, NULL, NULL);
        if (! input2) {
            fprintf(stderr, "Had to open the file twice to scan duration, but it didn't work the second time.\n");
            return 1;
        }
        size_t count = buffer_frame_count;
        printf("while count == buffer frame count\n");
        printf("buffer frame count: %i\n", (int) count);
        while (count == buffer_frame_count) {
            printf("1\n");
            count = sox_read(input2, frames, buffer_frame_count);
            printf("2\n");
            frame_count += count;
        }
        sox_close(input2);
        fprintf(stderr, "Warning: Had to scan for frame count. Found %i frames.\n", frame_count);
    }

    return 0;
}