93 lines
3.1 KiB
Diff
93 lines
3.1 KiB
Diff
From: Dan Minor <dminor@mozilla.com>
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Date: Tue, 17 Sep 2019 06:47:00 +0000
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Subject: Bug 1581193 - Fix devicechange event on Windows; r=achronop
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This restores the code for generating devicechange events that was
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accidentally removed as part of updating the Windows video capture code
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in Bug 1552755.
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Differential Revision: https://phabricator.services.mozilla.com/D46033
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Mercurial Revision: https://hg.mozilla.org/mozilla-central/rev/840c4edafa021eeac6a7e6ae0e828d0adcfea92e
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---
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.../video_capture/windows/device_info_ds.cc | 39 +++++++++++++++++++
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.../video_capture/windows/device_info_ds.h | 3 ++
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2 files changed, 42 insertions(+)
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diff --git a/modules/video_capture/windows/device_info_ds.cc b/modules/video_capture/windows/device_info_ds.cc
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index d0d274cb02..460ef3b7b9 100644
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--- a/modules/video_capture/windows/device_info_ds.cc
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+++ b/modules/video_capture/windows/device_info_ds.cc
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@@ -20,6 +20,29 @@
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namespace webrtc {
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namespace videocapturemodule {
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+LRESULT CALLBACK WndProc(HWND hWnd, UINT uiMsg, WPARAM wParam, LPARAM lParam)
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+{
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+ DeviceInfoDS* pParent;
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+ if (uiMsg == WM_CREATE)
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+ {
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+ pParent = (DeviceInfoDS*)((LPCREATESTRUCT)lParam)->lpCreateParams;
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+ SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)pParent);
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+ }
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+ else if (uiMsg == WM_DESTROY)
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+ {
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+ SetWindowLongPtr(hWnd, GWLP_USERDATA, NULL);
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+ }
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+ else if (uiMsg == WM_DEVICECHANGE)
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+ {
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+ pParent = (DeviceInfoDS*)GetWindowLongPtr(hWnd, GWLP_USERDATA);
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+ if (pParent)
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+ {
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+ pParent->DeviceChange();
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+ }
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+ }
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+ return DefWindowProc(hWnd, uiMsg, wParam, lParam);
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+}
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+
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// static
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DeviceInfoDS* DeviceInfoDS::Create() {
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DeviceInfoDS* dsInfo = new DeviceInfoDS();
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@@ -77,6 +100,18 @@ DeviceInfoDS::DeviceInfoDS()
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<< rtc::ToHex(hr);
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}
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}
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+
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+ _hInstance = reinterpret_cast<HINSTANCE>(GetModuleHandle(NULL));
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+ _wndClass = {0};
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+ _wndClass.lpfnWndProc = &WndProc;
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+ _wndClass.lpszClassName = TEXT("DeviceInfoDS");
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+ _wndClass.hInstance = _hInstance;
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+
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+ if (RegisterClass(&_wndClass)) {
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+ _hwnd = CreateWindow(_wndClass.lpszClassName, NULL, 0, CW_USEDEFAULT,
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+ CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL,
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+ NULL, _hInstance, this);
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+ }
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}
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DeviceInfoDS::~DeviceInfoDS() {
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@@ -85,6 +120,10 @@ DeviceInfoDS::~DeviceInfoDS() {
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if (_CoUninitializeIsRequired) {
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CoUninitialize();
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}
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+ if (_hwnd != NULL) {
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+ DestroyWindow(_hwnd);
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+ }
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+ UnregisterClass(_wndClass.lpszClassName, _hInstance);
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}
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int32_t DeviceInfoDS::Init() {
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diff --git a/modules/video_capture/windows/device_info_ds.h b/modules/video_capture/windows/device_info_ds.h
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index 1b52645cde..dc7b9b1a24 100644
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--- a/modules/video_capture/windows/device_info_ds.h
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+++ b/modules/video_capture/windows/device_info_ds.h
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@@ -93,6 +93,9 @@ class DeviceInfoDS : public DeviceInfoImpl {
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IEnumMoniker* _dsMonikerDevEnum;
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bool _CoUninitializeIsRequired;
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std::vector<VideoCaptureCapabilityWindows> _captureCapabilitiesWindows;
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+ HWND _hwnd;
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+ WNDCLASS _wndClass;
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+ HINSTANCE _hInstance;
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};
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} // namespace videocapturemodule
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} // namespace webrtc
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