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Unified Diff: ui/wayland/wayland_shm_buffer.cc

Issue 7457023: Adding a Wayland basic toolkit (Closed) Base URL: http://git.chromium.org/git/chromium.git@trunk
Patch Set: Naming for inlined functions Created 9 years, 5 months ago
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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..2cd59ace0f2450aee79354c700b1744043ddd003
--- /dev/null
+++ b/ui/wayland/wayland_shm_buffer.cc
@@ -0,0 +1,65 @@
+// 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 "ui/wayland/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 "ui/wayland/wayland_display.h"
+
+namespace ui {
+
+WaylandShmBuffer::WaylandShmBuffer(WaylandDisplay* display,
+ uint32_t width,
+ uint32_t height)
+ : 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) {
+ PLOG(ERROR) << "Failed to open";
+ return;
+ }
+ if (ftruncate(fd, allocation) < 0) {
+ PLOG(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) {
+ PLOG(ERROR) << "Failed to mmap /dev/zero";
+ close(fd);
+ return;
+ }
+ data_surface_ = cairo_image_surface_create_for_data(
+ data, CAIRO_FORMAT_ARGB32, width, height, stride);
+ buffer_ = wl_shm_create_buffer(display->shm(), fd,
+ width, height, stride, display->visual());
+ close(fd);
+}
+
+WaylandShmBuffer::~WaylandShmBuffer() {
+ if (buffer_) {
+ wl_buffer_destroy(buffer_);
+ buffer_ = NULL;
+ }
+ if (data_surface_) {
+ cairo_surface_destroy(data_surface_);
+ data_surface_ = NULL;
+ }
+}
+
+} // namespace ui

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