[PATCH spice-common] draw: Add spice_image_descriptor_is_lossy

[Pavel Grunt <pgrunt@xxxxxxxxxx>]

It will be used in the server code
---
 common/canvas_base.c | 12 +++++++-----
 common/draw.h        |  2 ++
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/common/canvas_base.c b/common/canvas_base.c
index d918441..509e0bf 100644
--- a/common/canvas_base.c
+++ b/common/canvas_base.c
@@ -47,9 +47,11 @@
 
 #define ROUND(_x) ((int)floor((_x) + 0.5))
 
-#define IS_IMAGE_LOSSY(descriptor)                         \
-    (((descriptor)->type == SPICE_IMAGE_TYPE_JPEG) ||      \
-    ((descriptor)->type == SPICE_IMAGE_TYPE_JPEG_ALPHA))
+int spice_image_descriptor_is_lossy(const SpiceImageDescriptor *descriptor)
+{
+    return descriptor->type == SPICE_IMAGE_TYPE_JPEG ||
+           descriptor->type == SPICE_IMAGE_TYPE_JPEG_ALPHA;
+}
 
  static inline int fix_to_int(SPICE_FIXED28_4 fixed)
 {
@@ -1219,7 +1221,7 @@ static pixman_image_t *canvas_get_image_internal(CanvasBase *canvas, SpiceImage
 #endif
         descriptor->type != SPICE_IMAGE_TYPE_FROM_CACHE ) {
 #ifdef SW_CANVAS_CACHE
-        if (!IS_IMAGE_LOSSY(descriptor)) {
+        if (!spice_image_descriptor_is_lossy(descriptor)) {
             canvas->bits_cache->ops->put(canvas->bits_cache, descriptor->id, surface);
         } else {
             canvas->bits_cache->ops->put_lossy(canvas->bits_cache, descriptor->id, surface);
@@ -1232,7 +1234,7 @@ static pixman_image_t *canvas_get_image_internal(CanvasBase *canvas, SpiceImage
 #endif
 #ifdef SW_CANVAS_CACHE
     } else if (descriptor->flags & SPICE_IMAGE_FLAGS_CACHE_REPLACE_ME) {
-        if (IS_IMAGE_LOSSY(descriptor)) {
+        if (spice_image_descriptor_is_lossy(descriptor)) {
             spice_warning("invalid cache replace request: the image is lossy");
             return NULL;
         }
diff --git a/common/draw.h b/common/draw.h
index 1155dc5..851a02c 100644
--- a/common/draw.h
+++ b/common/draw.h
@@ -294,6 +294,8 @@ typedef struct SpiceCursorHeader {
     uint16_t hot_spot_y;
 } SpiceCursorHeader;
 
+int spice_image_descriptor_is_lossy(const SpiceImageDescriptor *descriptor);
+
 SPICE_END_DECLS
 
 #endif /* _H_SPICE_DRAW */
-- 
2.5.0

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