enable yuv422p to uyvy converter

Originally committed as revision 27527 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/rgb2rgb.c

@@ -65,6 +65,9 @@ void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc
 void (*yuv422ptoyuy2)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                       long width, long height,
                       long lumStride, long chromStride, long dstStride);
+void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
+                      long width, long height,
+                      long lumStride, long chromStride, long dstStride);
 void (*yuy2toyv12)(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                    long width, long height,
                    long lumStride, long chromStride, long srcStride);

libswscale/rgb2rgb.h

@@ -109,6 +109,14 @@ extern void (*yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_
                           long width, long height,
                           long lumStride, long chromStride, long dstStride);
 
+/**
+ *
+ * width should be a multiple of 16
+ */
+extern void (*yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
+                             long width, long height,
+                             long lumStride, long chromStride, long dstStride);
+
 /**
  * Height should be a multiple of 2 and width should be a multiple of 2.
  * (If this is a problem for anyone then tell me, and I will fix it.)

libswscale/rgb2rgb_template.c

@@ -1755,6 +1755,16 @@ static inline void RENAME(yv12touyvy)(const uint8_t *ysrc, const uint8_t *usrc,
     RENAME(yuvPlanartouyvy)(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 2);
 }
 
+/**
+ * Width should be a multiple of 16.
+ */
+static inline void RENAME(yuv422ptouyvy)(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
+                                         long width, long height,
+                                         long lumStride, long chromStride, long dstStride)
+{
+    RENAME(yuvPlanartouyvy)(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 1);
+}
+
 /**
  * Width should be a multiple of 16.
  */
@@ -2727,6 +2737,7 @@ static inline void RENAME(rgb2rgb_init)(void){
     yv12toyuy2      = RENAME(yv12toyuy2);
     yv12touyvy      = RENAME(yv12touyvy);
     yuv422ptoyuy2   = RENAME(yuv422ptoyuy2);
+    yuv422ptouyvy   = RENAME(yuv422ptouyvy);
     yuy2toyv12      = RENAME(yuy2toyv12);
 //    uyvytoyv12      = RENAME(uyvytoyv12);
 //    yvu9toyv12      = RENAME(yvu9toyv12);

libswscale/swscale.c

@@ -1648,6 +1648,24 @@ static int PlanarToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], i
     return srcSliceH;
 }
 
+static int YUV422PToYuy2Wrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){
+    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
+
+    yuv422ptoyuy2(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
+
+    return srcSliceH;
+}
+
+static int YUV422PToUyvyWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
+                                int srcSliceH, uint8_t* dstParam[], int dstStride[]){
+    uint8_t *dst=dstParam[0] + dstStride[0]*srcSliceY;
+
+    yuv422ptouyvy(src[0],src[1],src[2],dst,c->srcW,srcSliceH,srcStride[0],srcStride[1],dstStride[0]);
+
+    return srcSliceH;
+}
+
 /* {RGB,BGR}{15,16,24,32,32_1} -> {RGB,BGR}{15,16,24,32} */
 static int rgb2rgbWrapper(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
                           int srcSliceH, uint8_t* dst[], int dstStride[]){
@@ -2233,6 +2251,14 @@ SwsContext *sws_getContext(int srcW, int srcH, int srcFormat, int dstW, int dstH
            && (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
              c->swScale= rgb2rgbWrapper;
 
+        if (srcFormat == PIX_FMT_YUV422P)
+        {
+            if (dstFormat == PIX_FMT_YUYV422)
+                c->swScale= YUV422PToYuy2Wrapper;
+            else if (dstFormat == PIX_FMT_UYVY422)
+                c->swScale= YUV422PToUyvyWrapper;
+        }
+
         /* LQ converters if -sws 0 or -sws 4*/
         if (c->flags&(SWS_FAST_BILINEAR|SWS_POINT)){
             /* yv12_to_yuy2 */