// load a full-res thumbnail:
int dt_imageio_large_thumbnail(const char *filename, uint8_t **buffer, int32_t *width, int32_t *height, int32_t *orientation)
{
int ret = 0;
int res = 1;
// raw image thumbnail
libraw_data_t *raw = libraw_init(0);
libraw_processed_image_t *image = NULL;
ret = libraw_open_file(raw, filename);
if(ret) goto libraw_fail;
ret = libraw_unpack_thumb(raw);
if(ret) goto libraw_fail;
ret = libraw_adjust_sizes_info_only(raw);
if(ret) goto libraw_fail;
image = libraw_dcraw_make_mem_thumb(raw, &ret);
if(!image || ret) goto libraw_fail;
*orientation = raw->sizes.flip;
if(image->type == LIBRAW_IMAGE_JPEG)
{
dt_imageio_jpeg_t jpg;
if(dt_imageio_jpeg_decompress_header(image->data, image->data_size, &jpg)) goto libraw_fail;
*buffer = (uint8_t *)malloc((size_t)sizeof(uint8_t)*jpg.width*jpg.height*4);
if(!*buffer) goto libraw_fail;
*width = jpg.width;
*height = jpg.height;
if(dt_imageio_jpeg_decompress(&jpg, *buffer))
{
free(*buffer);
*buffer = 0;
goto libraw_fail;
}
res = 0;
}
// clean up raw stuff.
libraw_recycle(raw);
libraw_close(raw);
free(image);
if(0)
{
libraw_fail:
// fprintf(stderr,"[imageio] %s: %s\n", filename, libraw_strerror(ret));
libraw_close(raw);
res = 1;
}
return res;
}
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;
}
// TODO: use orientation to correctly rotate the image.
// maybe this should be (partly) in common/imageio.[c|h]?
static void _lib_import_update_preview(GtkFileChooser *file_chooser, gpointer data)
{
GtkWidget *preview;
char *filename;
GdkPixbuf *pixbuf = NULL;
gboolean have_preview = FALSE;
preview = GTK_WIDGET(data);
filename = gtk_file_chooser_get_preview_filename(file_chooser);
if(!g_file_test(filename, G_FILE_TEST_IS_REGULAR)) goto no_preview_fallback;
// don't create dng thumbnails to avoid crashes in libtiff when these are hdr:
char *c = filename + strlen(filename);
while(c > filename && *c != '.') c--;
if(!strcasecmp(c, ".dng")) goto no_preview_fallback;
pixbuf = gdk_pixbuf_new_from_file_at_size(filename, 128, 128, NULL);
have_preview = (pixbuf != NULL);
if(!have_preview)
{
// raw image thumbnail
int ret;
libraw_data_t *raw = libraw_init(0);
libraw_processed_image_t *image = NULL;
ret = libraw_open_file(raw, filename);
if(ret) goto libraw_fail;
ret = libraw_unpack_thumb(raw);
if(ret) goto libraw_fail;
ret = libraw_adjust_sizes_info_only(raw);
if(ret) goto libraw_fail;
image = libraw_dcraw_make_mem_thumb(raw, &ret);
if(!image || ret) goto libraw_fail;
// const int orientation = raw->sizes.flip;
GdkPixbuf *tmp;
GdkPixbufLoader *loader = gdk_pixbuf_loader_new();
have_preview = gdk_pixbuf_loader_write(loader, image->data, image->data_size, NULL);
tmp = gdk_pixbuf_loader_get_pixbuf(loader);
gdk_pixbuf_loader_close(loader, NULL);
float ratio;
if(image->type == LIBRAW_IMAGE_JPEG)
{
// jpeg
dt_imageio_jpeg_t jpg;
if(dt_imageio_jpeg_decompress_header(image->data, image->data_size, &jpg)) goto libraw_fail;
ratio = 1.0*jpg.height/jpg.width;
}
else
{
// bmp -- totally untested
ratio = 1.0*image->height/image->width;
}
int width = 128, height = 128*ratio;
pixbuf = gdk_pixbuf_scale_simple(tmp, width, height, GDK_INTERP_BILINEAR);
if(loader)
g_object_unref(loader);
// clean up raw stuff.
libraw_recycle(raw);
libraw_close(raw);
free(image);
if(0)
{
libraw_fail:
// fprintf(stderr,"[imageio] %s: %s\n", filename, libraw_strerror(ret));
libraw_close(raw);
have_preview = FALSE;
}
}
if(!have_preview)
{
no_preview_fallback:
pixbuf = gdk_pixbuf_new_from_inline(-1, dt_logo_128x128, FALSE, NULL);
have_preview = TRUE;
}
if(have_preview)
gtk_image_set_from_pixbuf(GTK_IMAGE(preview), pixbuf);
if(pixbuf)
g_object_unref(pixbuf);
g_free(filename);
gtk_file_chooser_set_preview_widget_active(file_chooser, have_preview);
}
static void
_init_8(
uint8_t *buf,
uint32_t *width,
uint32_t *height,
const uint32_t imgid,
const dt_mipmap_size_t size)
{
const uint32_t wd = *width, ht = *height;
char filename[DT_MAX_PATH_LEN] = {0};
/* do not even try to process file if it isnt available */
dt_image_full_path(imgid, filename, DT_MAX_PATH_LEN);
if (strlen(filename) == 0 || !g_file_test(filename, G_FILE_TEST_EXISTS))
{
*width = *height = 0;
return;
}
const int altered = dt_image_altered(imgid);
int res = 1;
const dt_image_t *cimg = dt_image_cache_read_get(darktable.image_cache, imgid);
const int orientation = dt_image_orientation(cimg);
// the orientation for this camera is not read correctly from exiv2, so we need
// to go the full libraw path (as the thumbnail will be flipped the wrong way round)
const int incompatible = !strncmp(cimg->exif_maker, "Phase One", 9);
dt_image_cache_read_release(darktable.image_cache, cimg);
// first try exif thumbnail, that's smaller and thus faster to load:
if(!altered && !dt_conf_get_bool("never_use_embedded_thumb") &&
!dt_exif_thumbnail(filename, buf, wd, ht, orientation, width, height))
{
res = 0;
}
else if(!altered && !dt_conf_get_bool("never_use_embedded_thumb") && !incompatible)
{
// try to load the embedded thumbnail in raw
int ret;
memset(filename, 0, DT_MAX_PATH_LEN);
dt_image_full_path(imgid, filename, DT_MAX_PATH_LEN);
const char *c = filename + strlen(filename);
while(*c != '.' && c > filename) c--;
if(!strcasecmp(c, ".jpg"))
{
// try to load jpg
dt_imageio_jpeg_t jpg;
if(!dt_imageio_jpeg_read_header(filename, &jpg))
{
uint8_t *tmp = (uint8_t *)malloc(sizeof(uint8_t)*jpg.width*jpg.height*4);
if(!dt_imageio_jpeg_read(&jpg, tmp))
{
// scale to fit
dt_iop_flip_and_zoom_8(tmp, jpg.width, jpg.height, buf, wd, ht, orientation, width, height);
res = 0;
}
free(tmp);
}
}
else
{
// raw image thumbnail
libraw_data_t *raw = libraw_init(0);
libraw_processed_image_t *image = NULL;
ret = libraw_open_file(raw, filename);
if(ret) goto libraw_fail;
ret = libraw_unpack_thumb(raw);
if(ret) goto libraw_fail;
ret = libraw_adjust_sizes_info_only(raw);
if(ret) goto libraw_fail;
image = libraw_dcraw_make_mem_thumb(raw, &ret);
if(!image || ret) goto libraw_fail;
const int orientation = raw->sizes.flip;
if(image->type == LIBRAW_IMAGE_JPEG)
{
// JPEG: decode (directly rescaled to mip4)
dt_imageio_jpeg_t jpg;
if(dt_imageio_jpeg_decompress_header(image->data, image->data_size, &jpg)) goto libraw_fail;
uint8_t *tmp = (uint8_t *)malloc(sizeof(uint8_t)*jpg.width*jpg.height*4);
if(dt_imageio_jpeg_decompress(&jpg, tmp))
{
free(tmp);
goto libraw_fail;
}
// scale to fit
dt_iop_flip_and_zoom_8(tmp, jpg.width, jpg.height, buf, wd, ht, orientation, width, height);
free(tmp);
res = 0;
}
// clean up raw stuff.
libraw_recycle(raw);
libraw_close(raw);
free(image);
if(0)
{
libraw_fail:
// fprintf(stderr,"[imageio] %s: %s\n", filename, libraw_strerror(ret));
libraw_close(raw);
res = 1;
}
}
}
if(res)
{
// try the real thing: rawspeed + pixelpipe
dt_imageio_module_format_t format;
_dummy_data_t dat;
format.bpp = _bpp;
format.write_image = _write_image;
format.levels = _levels;
dat.head.max_width = wd;
dat.head.max_height = ht;
dat.buf = buf;
// export with flags: ignore exif (don't load from disk), don't swap byte order, don't do hq processing, and signal we want thumbnail export
res = dt_imageio_export_with_flags(imgid, "unused", &format, (dt_imageio_module_data_t *)&dat, 1, 1, 0, 1, NULL);
if(!res)
{
// might be smaller, or have a different aspect than what we got as input.
*width = dat.head.width;
*height = dat.head.height;
}
}
// fprintf(stderr, "[mipmap init 8] export image %u finished (sizes %d %d => %d %d)!\n", imgid, wd, ht, dat.head.width, dat.head.height);
// any errors?
if(res)
{
// fprintf(stderr, "[mipmap_cache] could not process thumbnail!\n");
*width = *height = 0;
return;
}
// TODO: various speed optimizations:
// TODO: also init all smaller mips!
// TODO: use mipf, but:
// TODO: if output is cropped, don't use mipf!
}