[Mesa-dev] [PATCH 2/9] vl/util: add copy func for yv12image to nv12surface

Christian K├Ânig deathsimple at vodafone.de
Fri Jul 22 14:14:44 UTC 2016


From: Boyuan Zhang <boyuan.zhang at amd.com>

Add function to copy from yv12 image to nv12 surface for VAAPI putimage call. We need this function in VaPutImage call where copying from yv12 image to nv12 surface for encoding. Existing function can't be used because it only work for copying from yv12 surface to nv12 image in Vaapi.

Signed-off-by: Boyuan Zhang <boyuan.zhang at amd.com>
---
 src/gallium/auxiliary/util/u_video.h | 37 ++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_video.h b/src/gallium/auxiliary/util/u_video.h
index 9196afc..86a7adc 100644
--- a/src/gallium/auxiliary/util/u_video.h
+++ b/src/gallium/auxiliary/util/u_video.h
@@ -130,6 +130,43 @@ u_copy_yv12_to_nv12(void *const *destination_data,
 }
 
 static inline void
+u_copy_yv12_img_to_nv12_surf(ubyte *const *src,
+                             ubyte *dst,
+                             unsigned width,
+                             unsigned height,
+                             unsigned src_stride,
+                             unsigned dst_stride,
+                             int field)
+{
+   if (field == 0) {
+      ubyte *src_0 = src[field];
+      for (int i = 0; i < height ; i++) {
+         memcpy(dst, src_0, width);
+         dst += dst_stride;
+         src_0 += src_stride;
+      }
+   } else if (field == 1) {
+      ubyte *src_1 = src[field];
+      ubyte *src_2 = src[field+1];
+      bool odd = false;
+      for (int i = 0; i < height ; i++) {
+         for (int j = 0; j < width*2 ; j++) {
+            if (odd == false) {
+               dst[j] = src_1[j/2];
+               odd = true;
+            } else {
+               dst[j] = src_2[j/2];
+               odd = false;
+            }
+         }
+         dst += dst_stride;
+         src_1 += src_stride;
+         src_2 += src_stride;
+      }
+   }
+}
+
+static inline void
 u_copy_swap422_packed(void *const *destination_data,
                        uint32_t const *destination_pitches,
                        int src_plane, int src_field,
-- 
2.5.0



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