[Ozone] Enables overlay render format setting path and by default use UYVY

ui/ozone/platform/drm/gpu/gbm_buffer_base.cc

Index: ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
diff --git a/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc b/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
index 355b0afdc665c17f567182eb3b9859e94080a32f..f8bd9f155fd56e4aec6db6690bf92651ba5c9558 100644
--- a/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
+++ b/ui/ozone/platform/drm/gpu/gbm_buffer_base.cc
@@ -26,20 +26,37 @@ GbmBufferBase::GbmBufferBase(const scoped_refptr<DrmDevice>& drm,
                              bool scanout)
     : drm_(drm), bo_(bo) {
   if (scanout) {
-    if (!drm_->AddFramebuffer(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
-                              kColorDepth, kPixelDepth, gbm_bo_get_stride(bo),
-                              gbm_bo_get_handle(bo).u32, &framebuffer_)) {
-      PLOG(ERROR) << "Failed to register buffer";
-      return;
-    }
-
     fb_pixel_format_ = gbm_bo_get_format(bo);
     if (fb_pixel_format_ == GBM_FORMAT_ARGB8888)
       fb_pixel_format_ = GBM_FORMAT_XRGB8888;
 
-    // For now, we always create a frame buffer of 24 bit color depth and
-    // support only XRGB format.
-    DCHECK(fb_pixel_format_ == GBM_FORMAT_XRGB8888);
+    switch (fb_pixel_format_) {
+      case GBM_FORMAT_XRGB8888:
+        if (!drm_->AddFramebuffer(gbm_bo_get_width(bo), gbm_bo_get_height(bo),

[kalyank, 2015/10/22 22:22:28]

As @marcheu1 pointed out we should just use AddFramebuffer2 here.

[william.xie1, 2015/10/23 00:23:32]

Done.

+                                  kColorDepth, kPixelDepth,
+                                  gbm_bo_get_stride(bo),
+                                  gbm_bo_get_handle(bo).u32, &framebuffer_)) {
+          PLOG(ERROR) << "Failed to register buffer";
+          return;
+        }
+        break;
+      case GBM_FORMAT_UYVY:
+        uint32_t handles[4] = {0};
+        handles[0] = gbm_bo_get_handle(bo).u32;
+        uint32_t strides[4] = {0};
+        strides[0] = gbm_bo_get_stride(bo);
+        uint32_t offsets[4] = {0};
+
+        if (!drm_->AddFramebuffer2(gbm_bo_get_width(bo), gbm_bo_get_height(bo),
+                                   fb_pixel_format_, handles, strides, offsets,
+                                   &framebuffer_, 0)) {
+          PLOG(ERROR) << "Failed to register buffer";
+          return;
+        }
+        break;
+      default:
+        NOTIMPLEMENTED();
+    }
   }
 }