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/*
* Copyright (c) 2019 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "modules/desktop_capture/linux/x11/x_window_property.h"
namespace webrtc {
XWindowPropertyBase::XWindowPropertyBase(Display* display,
Window window,
Atom property,
int expected_size) {
const int kBitsPerByte = 8;
Atom actual_type;
int actual_format;
unsigned long bytes_after; // NOLINT: type required by XGetWindowProperty
int status = XGetWindowProperty(display, window, property, 0L, ~0L, False,
AnyPropertyType, &actual_type, &actual_format,
&size_, &bytes_after, &data_);
if (status != Success) {
data_ = nullptr;
return;
}
if ((expected_size * kBitsPerByte) != actual_format) {
size_ = 0;
return;
}
is_valid_ = true;
}
XWindowPropertyBase::~XWindowPropertyBase() {
if (data_)
XFree(data_);
}
} // namespace webrtc