void* decode(JNIEnv* env, InputStream* stream, bool partially, int* format)
{
unsigned char magic_numbers[2];
PatchHeadInputStream* patch_head_input_stream;
*format = get_format(env, stream);
switch (*format) {
#ifdef IMAGE_SUPPORT_JPEG
case IMAGE_FORMAT_JPEG:
magic_numbers[0] = IMAGE_JPEG_MAGIC_NUMBER_0;
magic_numbers[1] = IMAGE_JPEG_MAGIC_NUMBER_1;
break;
#endif
#ifdef IMAGE_SUPPORT_PNG
case IMAGE_FORMAT_PNG:
magic_numbers[0] = IMAGE_PNG_MAGIC_NUMBER_0;
magic_numbers[1] = IMAGE_PNG_MAGIC_NUMBER_1;
break;
#endif
#ifdef IMAGE_SUPPORT_GIF
case IMAGE_FORMAT_GIF:
magic_numbers[0] = IMAGE_GIF_MAGIC_NUMBER_0;
magic_numbers[1] = IMAGE_GIF_MAGIC_NUMBER_1;
break;
#endif
default:
LOGE(EMSG("Can't detect format %d"), *format);
destroy_input_stream(get_env(), &stream);
return NULL;
}
patch_head_input_stream = create_patch_head_input_stream(stream, magic_numbers, 2);
if (patch_head_input_stream == NULL){
WTF_OM;
destroy_input_stream(get_env(), &stream);
return NULL;
}
switch (*format) {
#ifdef IMAGE_SUPPORT_JPEG
case IMAGE_FORMAT_JPEG:
return JPEG_decode(env, patch_head_input_stream, partially);
#endif
#ifdef IMAGE_SUPPORT_PNG
case IMAGE_FORMAT_PNG:
return PNG_decode(env, patch_head_input_stream, partially);
#endif
#ifdef IMAGE_SUPPORT_GIF
case IMAGE_FORMAT_GIF:
return GIF_decode(env, patch_head_input_stream, partially);
#endif
default:
LOGE(EMSG("Can't detect format %d"), *format);
close_patch_head_input_stream(get_env(), patch_head_input_stream);
destroy_patch_head_input_stream(get_env(), &patch_head_input_stream);
return NULL;
}
}
int main(int argc, char **argv) {
void *buff = NULL;
int height, width, depth, colors;
int ret;
ret = PNG_decode("basn2c08.png", &buff, &height, &width, &depth, &colors);
if(ret != 0){
printf("Decode error = %d\n", ret);
return ret;
}
printf("decode complete\n");
printf("height = %d\nwidth = %d\ndepth = %d\n",
height,
width,
depth);
//print our image:
img.height = height;
img.bdepth = depth;
img.width = width;
img.color_ch = colors;
int x_iter, y_iter=0;
// for(y_iter = 0; y_iter<height; y_iter++){
for(x_iter = 0; x_iter<width; x_iter++){
printf("%x ", extract_pixel(buff, img, x_iter, y_iter));
}
printf("\n");
// }
// printf("\n");
display_raw(buff, height, width, depth, colors);
return 0;
}
