[Armadeus-commitlog] armadeus branch, master, updated. release-3.2-501-g5067060

[Julien B a. A. <ar...@us...>]

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- Log -----------------------------------------------------------------
commit 5067060d5aa40c9736ae1715af9a30d602db0620
Author: Julien Boibessot <jul...@ar...>
Date:   Thu Jun 24 15:51:54 2010 +0200

    [DEMOS] capture: add yuv422_to_greyscale()

-----------------------------------------------------------------------

Summary of changes:
 target/demos/camera/capture/capture.c |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/target/demos/camera/capture/capture.c b/target/demos/camera/capture/capture.c
index dc7e7ba..84862e7 100644
--- a/target/demos/camera/capture/capture.c
+++ b/target/demos/camera/capture/capture.c
@@ -141,6 +141,25 @@ static Uint16 inline YUV2B(int Y, int U, int V)
 	return B;
 }
 
+static void yuv422_to_greyscale(void *yuv, int size, void *grey)
+{
+	unsigned int Y, Y2, yuv32;
+	int i;
+	Uint8 *dest = (Uint8*) grey;
+	Uint32 *src = (Uint32*) yuv;
+
+	for (i=size/4; i; i--) {
+		yuv32 = *(src++);
+
+		/* takes Ys from YUV422 packed format */
+		Y = (yuv32 & 0x000000ff);
+		Y2 = (yuv32 & 0x00ff0000) >> 16;
+
+		*(dest++) = (Uint8)Y;
+		*(dest++) = (Uint8)Y2;
+	}
+}
+
 static void yuv422_to_rgb565(void *yuv, int size, void *rgb)
 {
 	unsigned int Y, Y2, U, V, yuv32, rgb32;


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