X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fvideo_output%2Fvout_pictures.h;h=cdae378d7e12be562b3d94fc8de98d9dbfdadcf9;hb=51b21bc3a21f925a30fd5401bafe50ffedcba382;hp=4b7c78d9fbc36b59a3013c7a20bbd1b5656dac49;hpb=4d8cbc47f9ddc1faabc4b8c9063089a3d4681344;p=vlc

diff --git a/src/video_output/vout_pictures.h b/src/video_output/vout_pictures.h
index 4b7c78d9fb..cdae378d7e 100644
--- a/src/video_output/vout_pictures.h
+++ b/src/video_output/vout_pictures.h
@@ -99,3 +99,39 @@
 
 /* Palettized YUV with palette element Y:U:V:A */
 #define FOURCC_YUVP         VLC_FOURCC('Y','U','V','P')
+
+/* Planar 8-bit grayscale */
+#define FOURCC_GREY         VLC_FOURCC('G','R','E','Y')
+#define FOURCC_Y800         VLC_FOURCC('Y','8','0','0')
+#define FOURCC_Y8           VLC_FOURCC('Y','8',' ',' ')
+
+/* Alignment of critical dynamic data structure
+ *
+ * Not all platforms support memalign so we provide a vlc_memalign wrapper
+ * void *vlc_memalign( size_t align, size_t size, void **pp_orig )
+ * *pp_orig is the pointer that has to be freed afterwards.
+ */
+static inline
+void *vlc_memalign (void **pp, size_t align, size_t size)
+{
+#if defined (HAVE_POSIX_MEMALIGN)
+    return posix_memalign (pp, align, size) ? NULL : *pp;
+#elif defined (HAVE_MEMALIGN)
+    return *pp = memalign (align, size);
+#else
+    unsigned char *ptr;
+
+    if (align < 1)
+        return NULL;
+
+    align--;
+    ptr = malloc (size + align);
+    if (ptr == NULL)
+        return NULL;
+
+    *pp = ptr;
+    ptr += align;
+    return (void *)(((uintptr_t)ptr) & ~align);
+#endif
+}
+