/*
 * This file is the main module for gsmefr-decode utility.
 */

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include "../libgsmefr/gsm_efr.h"
#include "../libtest/binreader.h"
#include "../libtest/wavwriter.h"
#include "../libtest/pcmwrite.h"

main(argc, argv)
	char **argv;
{
	FILE *binf;
	void *wav;
	struct EFR_decoder_state *state;
	uint8_t frame[BINFILE_MAX_FRAME];
	int16_t pcm[160];
	int rc, bfi, taf;

	if (argc != 3) {
		fprintf(stderr, "usage: %s input.gsmx output.wav\n", argv[0]);
		exit(1);
	}
	binf = fopen(argv[1], "r");
	if (!binf) {
		perror(argv[1]);
		exit(1);
	}
	wav = wav_write_open(argv[2], 8000, 16, 1);
	if (!wav) {
		perror(argv[2]);
		exit(1);
	}
	state = EFR_decoder_create();
	if (!state) {
		perror("EFR_decoder_create()");
		exit(1);
	}
	for (;;) {
		rc = binfile_read_frame(binf, frame);
		if (rc < 0) {
			fprintf(stderr, "error: garbage in %s\n", argv[1]);
			exit(1);
		}
		if (!rc)
			break;
		if (frame[0] == 0xBF) {
			bfi = 1;
			taf = frame[1] & 1;
		} else if ((frame[0] & 0xF0) == 0xC0)
			bfi = 0;
		else {
			fprintf(stderr,
				"error: %s is not in EFR codec format\n",
				argv[1]);
			exit(1);
		}
		if (bfi)
			EFR_decode_bfi_nodata(state, taf, pcm);
		else
			EFR_decode_frame(state, frame, 0, 0, pcm);
		write_pcm_to_wav(wav, pcm);
	}
	wav_write_close(wav);
	exit(0);
}