Initial checkin of chromecast content embedder (cast_shell) and related build scripts.

chromecast/ui/gfx/surface_directfb.cc

+// Copyright (c) 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 "chromecast/ui/gfx/surface_directfb.h"
+
+#include "base/logging.h"
+#include "chromecast/ui/gfx/gfx_plane_directfb.h"
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+#include "ui/gfx/size.h"
+
+namespace gfx {
+namespace chromecast {
+
+SurfaceDirectFb::SurfaceDirectFb(GfxPlaneDirectFb* arg_plane,
+                                 const Size& arg_size, bool arg_primary)
+    : Surface(arg_plane, arg_size),
+      primary_(arg_primary) {
+  DFBSurfaceDescription dsc;
+
+  if (primary_) {
+    // fix directfb's abuse of an enum as a bitfield, allowed in C, not C++
+    dsc.flags = static_cast<DFBSurfaceDescriptionFlags>(DSDESC_CAPS |
+                                                        DSDESC_PIXELFORMAT);
+#if defined(DOUBLE_BUFFER)
+    dsc.caps = static_cast<DFBSurfaceCapabilities>(DSCAPS_PRIMARY |
+                                                   DSCAPS_DOUBLE);
+#else
+    dsc.caps = DSCAPS_PRIMARY;
+    // Add DSCAPS_DOUBLE to double-buffer, and if so, we'll need to disable
+    // autoflip-window, and explictly call Flip.
+    //
+#endif
+  } else {
+    // fix directfb's abuse of an enum as a bitfield, allowed in C, not C++
+    dsc.flags = static_cast<DFBSurfaceDescriptionFlags>(DSDESC_CAPS |
+                                                        DSDESC_WIDTH |
+                                                        DSDESC_HEIGHT |
+                                                        DSDESC_PIXELFORMAT);
+    dsc.caps = DSCAPS_NONE;       // not sure this is necessary
+    dsc.width = arg_size.width();
+    dsc.height = arg_size.height();
+  }
+
+  // Default (on Linux) seems to be RGB32, force it to ARGB so as to be
+  // compatible with chrome
+  // and we won't have to convert pixels.
+  dsc.pixelformat = DSPF_ARGB;
+
+  DFBResult err = arg_plane->dfb()->CreateSurface(arg_plane->dfb(), &dsc,
+                                                  &internal_surface_);
+  if (err != DFB_OK) {
+    LOG(FATAL) << "Create surface failed, err = " << DirectFBErrorString(err);
+  }
+
+  if (primary_) {
+    // Do some sanity non-fatal sanity checks for primary surface.
+    // These shouldn't fail and it isn't clear how we can recover.
+    DFBSurfacePixelFormat pixelformat;
+    err = internal_surface_->GetPixelFormat(internal_surface_, &pixelformat);
+    if (err != DFB_OK) {
+      LOG(FATAL) << "GetPixelFormat failed, err = "
+                 << DirectFBErrorString(err);
+    } else if (pixelformat != DSPF_ARGB) {
+      LOG(FATAL) << "Pixel format not DSPF_ARGB, err = "
+                 << DirectFBErrorString(err);
+    }
+
+    // Reset size.
+    int width = 0;
+    int height = 0;
+    err = internal_surface_->GetSize(internal_surface_, &width, &height);
+    if (err != DFB_OK) {
+      LOG(FATAL) << "GetSize failed, err = " << DirectFBErrorString(err);
+    } else if (width <= 0 || height <= 0) {
+      LOG(FATAL) << "GetSize didn't return a positive screen size, err = "
+                 << DirectFBErrorString(err);
+    }
+    set_size(Size(width, height));
+  }
+}
+
+SurfaceDirectFb::~SurfaceDirectFb() {
+  internal_surface_->Release(internal_surface_);
+}
+
+void SurfaceDirectFb::Blit(Surface* e_src_surface,
+                           const Rect& src_rect,
+                           const Point& dst_point) {
+  SurfaceDirectFb* src_surface = static_cast<SurfaceDirectFb*>(e_src_surface);
+
+  DFBRectangle dfb_src_rect;
+  dfb_src_rect.x = src_rect.x();
+  dfb_src_rect.y = src_rect.y();
+  dfb_src_rect.w = src_rect.width();
+  dfb_src_rect.h = src_rect.height();
+
+  DFBResult err = internal_surface_->Blit(
+      internal_surface_, src_surface->internal_surface_, &dfb_src_rect,
+      dst_point.x(), dst_point.y());
+  if (err != DFB_OK) {
+    LOG(FATAL) << "Blit failed, err = " << DirectFBErrorString(err);
+  }
+}
+
+void SurfaceDirectFb::Composite(Surface* e_src_surface,
+                                const Rect& src_rect,
+                                const Point& dst_point) {
+  // TODO(byungchul): To be perfect, surface for OSD should set this flag
+  // permanently. Considering this implementation is for testing on x86,
+  // setting flag here is just to keep consistency with marvell implementation.
+  internal_surface_->SetBlittingFlags(internal_surface_,
+                                      DSBLIT_BLEND_ALPHACHANNEL);
+  Blit(e_src_surface, src_rect, dst_point);
+  internal_surface_->SetBlittingFlags(internal_surface_, DSBLIT_NOFX);
+}
+
+void SurfaceDirectFb::CopyBitmap(char* src_bitmap,
+                                 const Rect& src_rect,
+                                 const Rect& damage_rect,
+                                 const Point& dst_point) {
+  std::vector<Rect> damage_rect_vector;
+  damage_rect_vector.push_back(damage_rect);
+
+  std::vector<Point> dst_point_vector;
+  dst_point_vector.push_back(dst_point);
+
+  BatchCopyBitmap(src_bitmap, src_rect, damage_rect_vector, dst_point_vector);
+}
+
+void SurfaceDirectFb::BatchCopyBitmap(
+    char* src_bitmap,
+    const Rect& src_rect,
+    const std::vector<Rect>& damage_rect_vector,
+    const std::vector<Point>& dst_point_vector) {
+  DCHECK_EQ(damage_rect_vector.size(), dst_point_vector.size());
+
+  // Note: use dynamic arrays (gcc extension) so we don't
+  // have to malloc / free space.
+  DFBRectangle src_rects[damage_rect_vector.size()];
+  DFBPoint dst_points[damage_rect_vector.size()];
+  int max_height = 0;
+  for (size_t i = 0; i < damage_rect_vector.size(); ++i) {
+    src_rects[i].x = damage_rect_vector[i].x();
+    src_rects[i].y = damage_rect_vector[i].y();
+    src_rects[i].w = damage_rect_vector[i].width();
+    src_rects[i].h = damage_rect_vector[i].height();
+    dst_points[i].x = dst_point_vector[i].x();
+    dst_points[i].y = dst_point_vector[i].y();
+    if (max_height < damage_rect_vector[i].height()) {
+      max_height = damage_rect_vector[i].height();
+    }
+  };
+
+  DCHECK_LE(max_height, src_rect.height());
+
+  // Creates a tempory surface for source bitmap.
+  DFBSurfaceDescription dsc;
+  // fix directfb's abuse of an enum as a bitfield, allowed in C, not C++
+  dsc.flags = static_cast<DFBSurfaceDescriptionFlags>(DSDESC_CAPS |
+                                                      DSDESC_WIDTH |
+                                                      DSDESC_HEIGHT |
+                                                      DSDESC_PIXELFORMAT |
+                                                      DSDESC_PREALLOCATED);
+  dsc.caps = DSCAPS_NONE;  // not sure this is necessary
+  dsc.width = src_rect.width();
+  dsc.height = src_rect.height();
+  dsc.pixelformat = DSPF_ARGB;      // Assume 32-bit ARGB pixels
+  dsc.preallocated[0].data = src_bitmap;
+  dsc.preallocated[0].pitch = src_rect.width() * kBytesPerPixelOfARGB;
+  dsc.preallocated[1].data = NULL;  // back buffer, not provided
+  dsc.preallocated[1].pitch = 0;
+
+  IDirectFB* dfb = static_cast<GfxPlaneDirectFb*>(plane())->dfb();
+  IDirectFBSurface* src_surface = NULL;
+  DFBResult err = dfb->CreateSurface(dfb, &dsc, &src_surface);
+  if (err != DFB_OK) {
+    LOG(FATAL) << "Create surface failed, err = " << DirectFBErrorString(err);
+  }
+
+  err = internal_surface_->BatchBlit(internal_surface_, src_surface, src_rects,
+                                     dst_points, damage_rect_vector.size());
+  if (err != DFB_OK) {
+    LOG(FATAL) << "BatchBlit failed, err = " << DirectFBErrorString(err);
+    // falling through to release the surface and it does no harm to flip.
+  }
+
+  src_surface->Release(src_surface);
+}
+
+void SurfaceDirectFb::Fill(const Rect& rect, int argb) {
+  NOTIMPLEMENTED();
+}
+
+void SurfaceDirectFb::Display(const Rect& rect,
+                              const Point& frame_buffer_point) {
+  plane()->Display(this, rect, frame_buffer_point);
+
+  // Double buffering shouldn't be necessary when running under X11
+  // (we should do it anyway for consistency and debugging).
+  //
+  // If running directfb under X11 and we are single-buffered,
+  // a flip is still needed.  When running on the target and
+  // single-buffered, no flip is needed (but shouldn't hurt).
+  //
+  // An alternative to flipping here when single buffered is
+  // to allow directfb to create a flipping thread.
+  IDirectFBSurface* primary =
+      static_cast<SurfaceDirectFb*>(plane()->frame_buffer())->internal_surface_;
+  DFBResult err = primary->Flip(primary, NULL,
+#if defined(DOUBLE_BUFFER)
+                                DSFLIP_WAITFORSYNC
+#else
+                                DSFLIP_NONE
+#endif
+                                );
+  if (err != DFB_OK) {
+    LOG(FATAL) << "Flip failed, err = " << DirectFBErrorString(err);
+    return;
+  }
+
+#if defined(DOUBLE_BUFFER)
+  // After a flip, we need to write the data again to the now stale back
+  // buffer (this makes it identical to the currently displayed front buffer.
+  plane()->Display(this, rect, frame_buffer_point);
+#endif
+}
+
+}  // namespace chromecast
+}  // namespace gfx