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/* Copyright (C) 2013 Mamadou DIOP
* Copyright (C) 2013 Doubango Telecom <http://www.doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*/
#include "mf_display_watcher.h"
#include "mf_utils.h"
#include "tsk_debug.h"
#include <assert.h>
DisplayWatcher::DisplayWatcher(HWND hWnd, IMFMediaSink* pMediaSink, HRESULT &hr)
: m_pDisplayControl(NULL)
, m_hWnd(hWnd)
, m_pWndProc(NULL)
, m_bStarted(FALSE)
, m_bFullScreen(FALSE)
{
IMFGetService *pService = NULL;
CHECK_HR(hr = pMediaSink->QueryInterface(__uuidof(IMFGetService), (void**)&pService));
CHECK_HR(hr = pService->GetService(MR_VIDEO_RENDER_SERVICE, __uuidof(IMFVideoDisplayControl), (void**)&m_pDisplayControl));
CHECK_HR(hr = m_pDisplayControl->SetAspectRatioMode(MFVideoARMode_PreservePicture));
bail:
SafeRelease(&pService);
}
DisplayWatcher::~DisplayWatcher()
{
Stop();
SafeRelease(&m_pDisplayControl);
}
HRESULT DisplayWatcher::Start()
{
HRESULT hr = S_OK;
HWND hWnd = m_hWnd; // save()
CHECK_HR(hr = Stop());
if((m_hWnd = hWnd) && m_pDisplayControl) {
CHECK_HR(hr = m_pDisplayControl->SetVideoWindow(hWnd));
BOOL ret = SetPropA(m_hWnd, "This", this);
assert(ret);
#if _M_X64
m_pWndProc = (WNDPROC)SetWindowLongPtr(m_hWnd, GWLP_WNDPROC, (LONG_PTR)DisplayWatcher::WndProc);
#else
m_pWndProc = (WNDPROC)SetWindowLongPtr(m_hWnd, GWL_WNDPROC, (LONG)DisplayWatcher::WndProc);
#endif
UpdatePosition(); // black screen if attached later
}
m_bStarted = TRUE;
bail:
return hr;
}
HRESULT DisplayWatcher::SetFullscreen(BOOL bEnabled)
{
if(m_pDisplayControl) {
HRESULT hr = m_pDisplayControl->SetFullscreen(bEnabled);
m_bFullScreen = SUCCEEDED(hr);
return hr;
}
return E_FAIL;
}
HRESULT DisplayWatcher::SetHwnd(HWND hWnd)
{
BOOL bWasStarted = m_bStarted;
Stop();
m_hWnd = hWnd;
if(bWasStarted) {
return Start();
}
return S_OK;
}
HRESULT DisplayWatcher::Stop()
{
if(m_hWnd && m_pWndProc) {
// Restore
#if _M_X64
SetWindowLongPtr(m_hWnd, GWLP_WNDPROC, (LONG_PTR)m_pWndProc);
#else
SetWindowLongPtr(m_hWnd, GWL_WNDPROC, (LONG)m_pWndProc);
#endif
}
m_hWnd = NULL;
m_pWndProc = NULL;
m_bStarted = FALSE;
return S_OK;
}
void DisplayWatcher::UpdatePosition()
{
if(m_pDisplayControl && m_hWnd) {
RECT rcDst = { 0, 0, 0, 0 };
GetClientRect(m_hWnd, &rcDst);
m_pDisplayControl->SetVideoPosition(NULL, &rcDst);
}
}
LRESULT CALLBACK DisplayWatcher::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
switch(uMsg) {
case WM_CREATE:
case WM_SIZE:
case WM_MOVE: {
DisplayWatcher* This = dynamic_cast<DisplayWatcher*>((DisplayWatcher*)GetPropA(hWnd, "This"));
if(This) {
This->UpdatePosition();
}
break;
}
case WM_CHAR:
case WM_KEYUP: {
DisplayWatcher* This = dynamic_cast<DisplayWatcher*>((DisplayWatcher*)GetPropA(hWnd, "This"));
if(This) {
if(This->m_bFullScreen && (wParam == 0x1B || wParam == VK_ESCAPE)) {
This->SetFullscreen(FALSE);
}
}
break;
}
}
return DefWindowProc(hWnd, uMsg, wParam, lParam);
}
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