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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/ozone/platform/drm/gpu/gbm_buffer_base.h"
 
 #include <gbm.h>
 
 #include "base/logging.h"
 #include "ui/ozone/platform/drm/gpu/drm_device.h"
 
 namespace ui {
 
 namespace {
 
 // Pixel configuration for the current buffer format.
 // TODO(dnicoara) These will need to change once we query the hardware for
 // supported configurations.
 const uint8_t kColorDepth = 24;
 const uint8_t kPixelDepth = 32;
 
 }  // namespace
 
 GbmBufferBase::GbmBufferBase(const scoped_refptr<DrmDevice>& drm,
                              gbm_bo* bo,
                              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)

[alexst (slow to review), 2015/10/22 13:00:19]

Please refactor this into a switch statement, there is a lot going on here.

[william.xie1, 2015/10/22 14:18:10]

Done.

       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);
+    if (fb_pixel_format_ == GBM_FORMAT_XRGB8888) {
+      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;
+      }
+    } else if (fb_pixel_format_ == 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;
+      }
+    } else {
+      NOTIMPLEMENTED();
+    }
   }
 }
 
 GbmBufferBase::~GbmBufferBase() {
   if (framebuffer_)
     drm_->RemoveFramebuffer(framebuffer_);
 }
 
 uint32_t GbmBufferBase::GetFramebufferId() const {
   return framebuffer_;
 }
 
 uint32_t GbmBufferBase::GetHandle() const {
   return gbm_bo_get_handle(bo_).u32;
 }
 
 gfx::Size GbmBufferBase::GetSize() const {
   return gfx::Size(gbm_bo_get_width(bo_), gbm_bo_get_height(bo_));
 }
 
 uint32_t GbmBufferBase::GetFramebufferPixelFormat() const {
   return fb_pixel_format_;
 }
 
 bool GbmBufferBase::RequiresGlFinish() const {
   return !drm_->is_primary_device();
 }
 
 }  // namespace ui