Let image loader backend decide how to process image buffer

[geeqie.git] / src / image-load-jpeg.cc

diff --git a/src/image-load-jpeg.cc b/src/image-load-jpeg.cc
index 6ee2b4a..07f471f 100644 (file)
--- a/src/image-load-jpeg.cc
+++ b/src/image-load-jpeg.cc
@@ -270,7 +270,7 @@ static void set_mem_src (j_decompress_ptr cinfo, void* buffer, long nbytes)
 }
 
 
-gboolean image_loader_jpeg_load (gpointer loader, const guchar *buf, gsize count, GError **error)
+gboolean image_loader_jpeg_write(gpointer loader, const guchar *buf, gsize &chunk_size, gsize count, GError **error)
 {
        auto lj = static_cast<ImageLoaderJpeg *>(loader);
        struct jpeg_decompress_struct cinfo;
@@ -324,9 +324,9 @@ gboolean image_loader_jpeg_load (gpointer loader, const guchar *buf, gsize count
        cinfo.err = jpeg_std_error (&jerr.pub);
        if (lj->stereo) cinfo2.err = jpeg_std_error (&jerr.pub);
        jerr.pub.error_exit = fatal_error_handler;
-        jerr.pub.output_message = output_message_handler;
+       jerr.pub.output_message = output_message_handler;
 
-        jerr.error = error;
+       jerr.error = error;
 
 
        if (sigsetjmp(jerr.setjmp_buffer, 0))
@@ -409,7 +409,7 @@ gboolean image_loader_jpeg_load (gpointer loader, const guchar *buf, gsize count
                {
                jpeg_destroy_decompress (&cinfo);
                if (lj->stereo) jpeg_destroy_decompress (&cinfo2);
-               return 0;
+               return FALSE;
                }
        if (lj->stereo) g_object_set_data(G_OBJECT(lj->pixbuf), "stereo_data", GINT_TO_POINTER(STEREO_PIXBUF_CROSS));
        lj->area_prepared_cb(loader, lj->data);
@@ -440,6 +440,7 @@ gboolean image_loader_jpeg_load (gpointer loader, const guchar *buf, gsize count
                jpeg_destroy_decompress(&cinfo);
                }
 
+       chunk_size = count;
        return TRUE;
 }
 
@@ -460,6 +461,7 @@ static gchar* image_loader_jpeg_get_format_name(gpointer)
 {
        return g_strdup("jpeg");
 }
+
 static gchar** image_loader_jpeg_get_format_mime_types(gpointer)
 {
        static const gchar *mime[] = {"image/jpeg", nullptr};
@@ -484,13 +486,11 @@ static void image_loader_jpeg_free(gpointer loader)
        g_free(lj);
 }
 
-
 void image_loader_backend_set_jpeg(ImageLoaderBackend *funcs)
 {
        funcs->loader_new = image_loader_jpeg_new;
        funcs->set_size = image_loader_jpeg_set_size;
-       funcs->load = image_loader_jpeg_load;
-       funcs->write = nullptr;
+       funcs->write = image_loader_jpeg_write;
        funcs->get_pixbuf = image_loader_jpeg_get_pixbuf;
        funcs->close = image_loader_jpeg_close;
        funcs->abort = image_loader_jpeg_abort;