jbyteArray Java_org_libraw_LibRaw_getThumbFromBuffer(JNIEnv* env, jclass clazz, jbyteArray bufferBytes) {
libraw_data_t * data;
jbyte* buffer;
jsize len;
jbyteArray ret;
libraw_processed_image_t * image;
data = libraw_init(0);
len = (*env)->GetArrayLength(env, bufferBytes);
buffer = (*env)->GetByteArrayElements(env, bufferBytes, NULL);
libraw_open_buffer(data, (void *) buffer, (size_t) len);
libraw_unpack_thumb(data);
image = libraw_dcraw_make_mem_thumb(data, 0);
ret = (*env)->NewByteArray(env, image->data_size);
(*env)->SetByteArrayRegion(env, ret, 0, image->data_size, (jbyte *) image->data);
(*env)->ReleaseByteArrayElements(env, bufferBytes, buffer, 0);
return ret;
}
int main(int argc, char *argv[])
{
char *buf = NULL;
size_t buf_size = 0;
char rbuf[BLOCK_SIZE];
size_t n;
for (;;) {
n = fread(rbuf, sizeof(char), BLOCK_SIZE, stdin);
buf_size += n;
buf = realloc(buf, buf_size);
memcpy(buf + (buf_size - n), rbuf, n);
if (n < BLOCK_SIZE) {
if (feof(stdin)) {
break;
} else {
fprintf(stderr, "Read error\n");
exit(1);
}
}
}
libraw_data_t *iprc = libraw_init(0);
if (!iprc) {
fprintf(stderr,"Cannot create libraw handle\n");
exit(1);
}
iprc->params.user_mul[0] = 1;
iprc->params.user_mul[1] = 0.5;
iprc->params.user_mul[2] = 1;
iprc->params.user_mul[3] = 0.5;
iprc->params.use_camera_wb = 1;
iprc->params.use_camera_matrix = 1;
iprc->params.highlight = 9;
iprc->params.output_color = 0;
iprc->params.output_bps = 16;
iprc->params.user_qual = 1;
iprc->params.four_color_rgb = 1;
iprc->params.no_auto_bright = 1;
int ret = libraw_open_buffer(iprc, buf, buf_size);
if (ret) libraw_error(ret);
ret = libraw_unpack(iprc);
if (ret) libraw_error(ret);
ret = libraw_dcraw_process(iprc);
if (ret) libraw_error(ret);
libraw_processed_image_t *out;
out = libraw_dcraw_make_mem_image(iprc, &ret);
if (ret) libraw_error(ret);
printf("P6\n%d %d\n%d\n", out->width, out->height, out->bits == 16 ? 65535 : 255);
int i;
for (i = 0; i < out->data_size; i += 2)
SWAP(out->data[i], out->data[i+1]);
n = fwrite(out->data, sizeof(char), out->data_size, stdout);
fflush(stdout);
if (n < out->data_size) {
fprintf(stderr, "Write error\n");
exit(1);
}
return 0;
}
static GthImage *
_cairo_image_surface_create_from_raw (GInputStream *istream,
GthFileData *file_data,
int requested_size,
int *original_width,
int *original_height,
gpointer user_data,
GCancellable *cancellable,
GError **error)
{
libraw_data_t *raw_data;
int result;
void *buffer = NULL;
size_t size;
GthImage *image = NULL;
raw_data = libraw_init (LIBRAW_OPIONS_NO_MEMERR_CALLBACK | LIBRAW_OPIONS_NO_DATAERR_CALLBACK);
if (raw_data == NULL) {
_libraw_set_gerror (error, errno);
goto fatal_error;
}
libraw_set_progress_handler (raw_data, _libraw_progress_cb, cancellable);
if (! _g_input_stream_read_all (istream, &buffer, &size, cancellable, error))
goto fatal_error;
raw_data->params.output_tiff = FALSE;
raw_data->params.use_camera_wb = TRUE;
raw_data->params.use_rawspeed = TRUE;
raw_data->params.highlight = FALSE;
raw_data->params.use_camera_matrix = TRUE;
raw_data->params.output_color = RAW_OUTPUT_COLOR_SRGB;
raw_data->params.output_bps = 8;
raw_data->params.half_size = (requested_size > 0);
result = libraw_open_buffer (raw_data, buffer, size);
if (LIBRAW_FATAL_ERROR (result)) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
/* */
#if RAW_USE_EMBEDDED_THUMBNAIL
if (requested_size > 0) {
/* read the thumbnail */
result = libraw_unpack_thumb (raw_data);
if (result != LIBRAW_SUCCESS) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
switch (raw_data->thumbnail.tformat) {
case LIBRAW_THUMBNAIL_JPEG:
image = _libraw_read_jpeg_data (raw_data->thumbnail.thumb,
raw_data->thumbnail.tlength,
requested_size,
cancellable,
error);
break;
case LIBRAW_THUMBNAIL_BITMAP:
image = _libraw_read_bitmap_data (raw_data->thumbnail.twidth,
raw_data->thumbnail.theight,
raw_data->thumbnail.tcolors,
8,
(guchar *) raw_data->thumbnail.thumb,
raw_data->thumbnail.tlength);
break;
default:
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, "Unsupported data format");
break;
}
if ((image != NULL) && (_libraw_get_tranform (raw_data) != GTH_TRANSFORM_NONE)) {
cairo_surface_t *surface;
cairo_surface_t *rotated;
surface = gth_image_get_cairo_surface (image);
rotated = _cairo_image_surface_transform (surface, _libraw_get_tranform (raw_data));
gth_image_set_cairo_surface (image, rotated);
cairo_surface_destroy (rotated);
cairo_surface_destroy (surface);
}
}
else
#endif
{
/* read the image */
libraw_processed_image_t *processed_image;
result = libraw_unpack (raw_data);
if (result != LIBRAW_SUCCESS) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
result = libraw_dcraw_process (raw_data);
if (result != LIBRAW_SUCCESS) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
processed_image = libraw_dcraw_make_mem_image (raw_data, &result);
if (result != LIBRAW_SUCCESS) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
switch (processed_image->type) {
case LIBRAW_IMAGE_JPEG:
image = _libraw_read_jpeg_data (processed_image->data,
processed_image->data_size,
-1,
cancellable,
error);
break;
case LIBRAW_IMAGE_BITMAP:
image = _libraw_read_bitmap_data (processed_image->width,
processed_image->height,
processed_image->colors,
processed_image->bits,
processed_image->data,
processed_image->data_size);
break;
default:
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_INVALID_DATA, "Unsupported data format");
break;
}
libraw_dcraw_clear_mem (processed_image);
}
/* get the original size */
if ((original_width != NULL) && (original_height != NULL)) {
result = libraw_adjust_sizes_info_only (raw_data);
if (result != LIBRAW_SUCCESS) {
_libraw_set_gerror (error, result);
goto fatal_error;
}
*original_width = raw_data->sizes.iwidth;
*original_height = raw_data->sizes.iheight;
}
fatal_error:
if (raw_data != NULL)
libraw_close (raw_data);
g_free (buffer);
return image;
}
