/*

 * Copyright (C) 2018 Sascha Brawer

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write see:

 *             <http://www.gnu.org/licenses/>.

 */

#include "config.h"

#include <stdint.h>

#include <stdlib.h>

#include <string.h>

#include <libgen.h>

#include <espeak-ng/espeak_ng.h>

static int initialized = 0;

static int SynthCallback(short *wav, int numsamples, espeak_EVENT *events) {

  (void)wav; // unused

  (void)numsamples; // unused

  (void)events; // unused

  return 0;

}

/* See http://llvm.org/docs/LibFuzzer.html */

extern int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);

extern int LLVMFuzzerInitialize(const int* argc, char*** argv);

char *filepath = NULL;

int LLVMFuzzerInitialize(const int* argc, char*** argv) {

  (void)argc; // unused

  filepath = dirname(strdup((*argv)[0]));

  return 0;

}

int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {

  if (!initialized) {

    const char *hasDataPath = getenv("ESPEAK_DATA_PATH");

    if (!hasDataPath) {

      setenv("ESPEAK_DATA_PATH",filepath,0);

    }

    espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 0, NULL, 0);

    espeak_ng_SetRandSeed(1);

    espeak_SetSynthCallback(SynthCallback);

    initialized = 1;

  }

  int synth_flags = espeakCHARS_UTF8 | espeakPHONEMES | espeakSSML;

       char *str = malloc(size+1);

       memcpy(str, data, size);

       str[size] = 0;

       espeak_Synth((char*) str, size + 1, 0, POS_CHARACTER, 0,

               synth_flags, NULL, NULL);

       free(str);

  return 0;

}