Bundled libwebp updated to version 0.5.1

This commit imports libwebp 0.5.1, including AUTHORS, COPYING, ChangeLog,
NEWS, PATENTS, README and src directories. In src, only includes header
and source files.

Upstream changes since 0.5.0 have been merged in.
Also updated version in qt_attribution.json.

Conflicts:
	src/3rdparty/libwebp.pri
	src/3rdparty/libwebp/qt_attribution.json
	src/3rdparty/libwebp/src/webp/config.h

Change-Id: I7d0c15400154c3b4ee8ff37665303307c4b84f9f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>

1 files changed, 19 insertions, 3 deletions

diff --git a/src/3rdparty/libwebp/src/utils/utils.h b/src/3rdparty/libwebp/src/utils/utils.h
index f506d66..e0a8112 100644
--- a/src/3rdparty/libwebp/src/utils/utils.h
+++ b/src/3rdparty/libwebp/src/utils/utils.h
@@ -21,6 +21,7 @@
 
 #include <assert.h>
 
+#include "../dsp/dsp.h"
 #include "../webp/types.h"
 
 #ifdef __cplusplus
@@ -51,7 +52,7 @@ WEBP_EXTERN(void) WebPSafeFree(void* const ptr);
 // Alignment
 
 #define WEBP_ALIGN_CST 31
-#define WEBP_ALIGN(PTR) ((uintptr_t)((PTR) + WEBP_ALIGN_CST) & ~WEBP_ALIGN_CST)
+#define WEBP_ALIGN(PTR) (((uintptr_t)(PTR) + WEBP_ALIGN_CST) & ~WEBP_ALIGN_CST)
 
 #if defined(WEBP_FORCE_ALIGNED)
 #include <string.h>
@@ -65,10 +66,12 @@ static WEBP_INLINE void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) {
   memcpy(ptr, &val, sizeof(val));
 }
 #else
-static WEBP_INLINE uint32_t WebPMemToUint32(const uint8_t* const ptr) {
+static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE
+uint32_t WebPMemToUint32(const uint8_t* const ptr) {
   return *(const uint32_t*)ptr;
 }
-static WEBP_INLINE void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) {
+static WEBP_UBSAN_IGNORE_UNDEF WEBP_INLINE
+void WebPUint32ToMem(uint8_t* const ptr, uint32_t val) {
   *(uint32_t*)ptr = val;
 }
 #endif
@@ -158,6 +161,19 @@ WEBP_EXTERN(void) WebPCopyPixels(const struct WebPPicture* const src,
                                  struct WebPPicture* const dst);
 
 //------------------------------------------------------------------------------
+// Unique colors.
+
+// Returns count of unique colors in 'pic', assuming pic->use_argb is true.
+// If the unique color count is more than MAX_COLOR_COUNT, returns
+// MAX_COLOR_COUNT+1.
+// If 'palette' is not NULL and number of unique colors is less than or equal to
+// MAX_COLOR_COUNT, also outputs the actual unique colors into 'palette'.
+// Note: 'palette' is assumed to be an array already allocated with at least
+// MAX_COLOR_COUNT elements.
+WEBP_EXTERN(int) WebPGetColorPalette(const struct WebPPicture* const pic,
+                                     uint32_t* const palette);
+
+//------------------------------------------------------------------------------
 
 #ifdef __cplusplus
 }    // extern "C"