[PATCH 2/2] vo_xv: Add NV12/NV21 support

Add support for NV12/NV21. Useful for cases when your hardware doesn't
do YV12/I420.
---
 libvo/vo_xv.c | 54 +++++++++++++++++++++++++++++++++++++-----------------
 1 file changed, 37 insertions(+), 17 deletions(-)

diff --git a/libvo/vo_xv.c b/libvo/vo_xv.c
index 95600fc85b5e..4185ea244b46 100644
--- a/libvo/vo_xv.c
+++ b/libvo/vo_xv.c
@@ -392,28 +392,41 @@ static int draw_slice(uint8_t * image[], int stride[], int w, int h,
     memcpy_pic(dst, image[0], w, h, xvimage[current_buf]->pitches[0],
                stride[0]);
 
-    x /= 2;
     y /= 2;
-    w /= 2;
     h /= 2;
 
-    dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[1] +
-        xvimage[current_buf]->pitches[1] * y + x;
-    if (image_format != IMGFMT_YV12)
-        memcpy_pic(dst, image[1], w, h, xvimage[current_buf]->pitches[1],
-                   stride[1]);
-    else
-        memcpy_pic(dst, image[2], w, h, xvimage[current_buf]->pitches[1],
-                   stride[2]);
+    if (image_format == IMGFMT_NV12 || image_format == IMGFMT_NV21)
+    {
+        x &= ~1;
+        w &= ~1;
 
-    dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[2] +
-        xvimage[current_buf]->pitches[2] * y + x;
-    if (image_format == IMGFMT_YV12)
+        dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[1] +
+            xvimage[current_buf]->pitches[1] * y + x;
         memcpy_pic(dst, image[1], w, h, xvimage[current_buf]->pitches[1],
                    stride[1]);
-    else
-        memcpy_pic(dst, image[2], w, h, xvimage[current_buf]->pitches[1],
-                   stride[2]);
+    } else
+    {
+        x /= 2;
+        w /= 2;
+
+        dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[1] +
+            xvimage[current_buf]->pitches[1] * y + x;
+        if (image_format != IMGFMT_YV12)
+            memcpy_pic(dst, image[1], w, h, xvimage[current_buf]->pitches[1],
+                       stride[1]);
+        else
+            memcpy_pic(dst, image[2], w, h, xvimage[current_buf]->pitches[1],
+                       stride[2]);
+
+        dst = xvimage[current_buf]->data + xvimage[current_buf]->offsets[2] +
+            xvimage[current_buf]->pitches[2] * y + x;
+        if (image_format == IMGFMT_YV12)
+            memcpy_pic(dst, image[1], w, h, xvimage[current_buf]->pitches[1],
+                       stride[1]);
+        else
+            memcpy_pic(dst, image[2], w, h, xvimage[current_buf]->pitches[1],
+                       stride[2]);
+    }
 
     return 0;
 }
@@ -481,7 +494,14 @@ static uint32_t get_image(mp_image_t * mpi)
             xvimage[current_buf]->data + xvimage[current_buf]->offsets[0];
         mpi->stride[0] = xvimage[current_buf]->pitches[0];
         mpi->width = mpi->stride[0] / (mpi->bpp / 8);
-        if (mpi->flags & MP_IMGFLAG_PLANAR)
+        if (mpi->flags & MP_IMGFLAG_PLANAR && mpi->num_planes == 2)
+        {
+            // NV12/NV21
+            mpi->planes[1] =
+                xvimage[current_buf]->data +
+                xvimage[current_buf]->offsets[1];
+            mpi->stride[1] = xvimage[current_buf]->pitches[1];
+        } else if (mpi->flags & MP_IMGFLAG_PLANAR)
         {
             if (mpi->flags & MP_IMGFLAG_SWAPPED)
             {
-- 
2.10.2

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