Index: ui/wayland/wayland_shm_buffer.cc |
diff --git a/ui/wayland/wayland_shm_buffer.cc b/ui/wayland/wayland_shm_buffer.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..e84948cb15c76f9ee8100d3891bcc30deff1e8c0 |
--- /dev/null |
+++ b/ui/wayland/wayland_shm_buffer.cc |
@@ -0,0 +1,64 @@ |
+// Copyright (c) 2011 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 "wayland_shm_buffer.h" |
+ |
+#include <cairo.h> |
+#include <fcntl.h> |
+#include <stdlib.h> |
+#include <sys/mman.h> |
+#include <unistd.h> |
+#include <wayland-client.h> |
+ |
+#include "base/logging.h" |
+#include "wayland_display.h" |
+ |
+WaylandShmBuffer::WaylandShmBuffer(WaylandDisplay* display, |
+ uint32_t width, uint32_t height) |
+ : cairo_data_surface_(NULL) { |
+ int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width); |
+ int allocation = stride * height; |
+ |
+ char filename[] = "/tmp/wayland-shm-XXXXXX"; |
+ int fd = mkstemp(filename); |
+ if (fd < 0) { |
+ LOG(ERROR) << "Failed to open"; |
+ return; |
+ } |
+ if (ftruncate(fd, allocation) < 0) { |
+ LOG(ERROR) << "Failed to ftruncate"; |
+ close(fd); |
+ return; |
+ } |
+ |
+ unsigned char* data = static_cast<unsigned char*>( |
+ mmap(NULL, allocation, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)); |
+ unlink(filename); |
+ |
+ if (data == MAP_FAILED) { |
+ LOG(ERROR) << "Failed to mmap /dev/zero"; |
+ close(fd); |
+ return; |
+ } |
+ cairo_data_surface_ = cairo_image_surface_create_for_data( |
+ data, CAIRO_FORMAT_ARGB32, width, height, stride); |
+ buffer_ = wl_shm_create_buffer(display->GetShm(), fd, |
+ width, height, stride, display->GetVisual()); |
+ close(fd); |
+} |
+ |
+WaylandShmBuffer::~WaylandShmBuffer() { |
+ if (buffer_) { |
+ wl_buffer_destroy(buffer_); |
+ buffer_ = NULL; |
+ } |
+ if (cairo_data_surface_) { |
+ cairo_surface_destroy(cairo_data_surface_); |
+ cairo_data_surface_ = NULL; |
+ } |
+} |
+ |
+cairo_surface_t* WaylandShmBuffer::GetDataSurface() const { |
+ return cairo_data_surface_; |
+} |