jstring Java_com_ingogo_android_cardreader_helpers_Swipe_decodeSquareSwipe(JNIEnv *environment, jobject thiz, jshortArray jArray, int length) {
jshort *jSamples;
jstring returnString;
short *samples;
jSamples = (*environment)->GetShortArrayElements(environment, jArray, NULL);
if (jSamples == NULL) {
return (*environment)->NewStringUTF(environment, "");
}
samples = jSamples;
PcmData *pcm = pcm_init(samples, length, false);
(*environment)->ReleaseShortArrayElements(environment, jArray, jSamples, JNI_ABORT);
SquareDecoder *decoder = square_init(pcm);
square_decode_swipe(decoder);
if (decoder->lastError == SwipeError_Success) {
returnString = (*environment)->NewStringUTF(environment, decoder->cardString);
} else {
char errorCode[8];
sprintf(errorCode, "%d", decoder->lastError);
returnString = (*environment)->NewStringUTF(environment, errorCode);
}
pcm_free(pcm);
square_free(decoder);
return returnString;
}
int main( int argc, const char **argv )
{
if ( argc == 2 ) {
square *q = square_init( atoi(argv[1]) );
magic(q);
square_print(q);
printf("\nMagic sum : %d\n", square_sum(q));
square_free(q);
} else {
printf("Wrong number of arguments, should be 1 and"
" the argument have to be an integer\n");
}
return 0;
}
int main(int argc, char* argv[]) {
long long row[100], previous_row[100];
int current_row;
int i;
long long sum = 0;
add(1);
for (current_row=1;current_row<=51;current_row++) {
row[0]=1;
row[current_row-1]=1;
for (i=1;i<current_row-1;i++) {
row[i]=previous_row[i-1]+previous_row[i];
add(row[i]);
}
for (i=0;i<current_row;i++) previous_row[i]=row[i];
}
for (i=0;i<nb;i++) if (square_free(numbers[i])) sum+=numbers[i];
printf("%lli\n", sum);
return 0;
}
int main(int argc, char **argv) {
short *samples;
int file_descriptor;
struct stat file_stats;
int offset = 0;
if (argc == 1) {
printf("%s <audio file>\n", argv[0]);
return EXIT_FAILURE;
}
file_descriptor = open(argv[1], O_RDONLY);
if (file_descriptor == -1) {
perror("Failed to open audio file");
return EXIT_FAILURE;
}
if (fstat(file_descriptor, &file_stats)) {
perror("Failed to stat file");
return EXIT_FAILURE;
}
if (!strncmp((argv[1] + strlen(argv[1] - 4)), ".wav", 4)) {
offset = 44;
}
samples = mmap(0, file_stats.st_size, PROT_READ, MAP_SHARED,
file_descriptor, offset);
if (samples == MAP_FAILED) {
close(file_descriptor);
perror("Failed to map file");
return EXIT_FAILURE;
}
printf("File length: %d\n", (int) (file_stats.st_size - offset));
PcmData *pcm = pcm_init(samples, (file_stats.st_size - offset) / 2, false);
printf("Decoding swipe using Square algorithm...\n");
SquareDecoder *decoder = square_init(pcm);
square_decode_swipe(decoder);
if (decoder->lastError == SwipeError_Success) {
printf("Decoded card characters: %s\n", decoder->cardString);
} else {
printf(
"Card decoding using Square algorithm has failed! Using UniMag algorithm...\n");
char *byteSamples = (char*) malloc(
(file_stats.st_size - offset) * sizeof(char));
char *buffer = (char*) samples;
int i = 0;
for (i = offset; i <= file_stats.st_size; ++i) {
byteSamples[i] = buffer[i];
}
char *cardString = unimag_decode(byteSamples,
file_stats.st_size - offset);
printf("Decoded card characters: %s\n", cardString);
free(byteSamples);
free(cardString);
}
pcm_free(pcm);
square_free(decoder);
if (munmap(samples, file_stats.st_size) == -1) {
perror("Failed to unmap file");
}
close(file_descriptor);
return EXIT_SUCCESS;
}
