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Environs.Cli.Utils.cpp
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Environs.Cli.Utils.cpp
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/**
* Environs CLI Utilities
* ------------------------------------------------------------------
* Copyright (c) Chi-Tai Dang
*
* @author Chi-Tai Dang
* @version 1.0
* @remarks
*
* This file is part of the Environs framework developed at the
* Lab for Human Centered Multimedia of the University of Augsburg.
* http://hcm-lab.de/environs
*
* Environ is free software; you can redistribute it and/or modify
* it under the terms of the Eclipse Public License v1.0.
* A copy of the license may be obtained at:
* http://www.eclipse.org/org/documents/epl-v10.html
* --------------------------------------------------------------------
*/
#include "stdafx.h"
#ifdef CLI_CPP
#include "Environs.Cli.Forwards.h"
#include "Environs.Cli.h"
#include "Sensor.Frame.Cli.h"
#include "Interop/Stat.h"
#include "Environs.Native.h"
#include "Environs.Lib.h"
#include "Environs.h"
#include "Device/Device.List.Cli.h"
#include "Device/Device.Instance.Cli.h"
#include "Portal.Info.h"
using namespace System::Windows::Media;
#define CLASS_NAME "Environs.Cli.Utils . . ."
#define USE_ENV_LOG
//#define WITH_TIME_STRING
#ifdef USE_ENV_LOG
//# define LOG_OUT(exp) String ^ l = exp + "\n"; environs::API::LogN ( l, l->Length )
# define LOG_OUT(exp) exp->Append ( "\n" ); environs::API::LogN ( sbl->ToString(), sbl->Length )
//# define LOG_OUT(exp) LogBuffer::Add ( exp + "\n" )
#else
# define LOG_OUT(exp) Debug::WriteLine ( exp )
#endif
namespace environs
{
#ifndef CLI_NOUI
void Environs::SwitchToFullScreen ()
{
if ( appWindow == nullptr ) {
CWarn ( "SwitchToFullScreen: No client window!" );
return;
}
appWindow->MinWidth = SystemParameters::PrimaryScreenWidth - 50;
appWindow->MaxWidth = SystemParameters::PrimaryScreenWidth + 200;
appWindow->MinHeight = SystemParameters::PrimaryScreenHeight - 25;
appWindow->MaxHeight = SystemParameters::PrimaryScreenHeight + 200;
appWindow->WindowStyle = WindowStyle::None;
appWindow->WindowState = WindowState::Maximized;
}
bool IsUIThread ()
{
if ( System::Windows::Application::Current == nullptr )
return false;
if ( Thread::CurrentThread == System::Windows::Application::Current->Dispatcher->Thread )
return true;
return false;
}
/// <summary>
/// Helper method to dispatch instructions encapsulated into an Action to be executed in the Main- or UI-thread.
/// </summary>
bool Environs::dispatch ( Action ^ action )
{
#if defined(WFORMS)
if ( appWindow == nullptr || action == nullptr )
return false;
if ( appWindow->InvokeRequired )
appWindow->Invoke ( action, nullptr );
else
action ();
#elif defined(WINDOWS_PHONE)
Deployment::Current::Dispatcher.BeginInvoke ( action );
#else
if ( System::Windows::Application::Current == nullptr || action == nullptr )
return false;
if ( Thread::CurrentThread == System::Windows::Application::Current->Dispatcher->Thread )
action ();
else {
System::Windows::Threading::DispatcherOperation ^ op = System::Windows::Application::Current->Dispatcher->BeginInvoke ( action );
if ( op == nullptr || op->Status == System::Windows::Threading::DispatcherOperationStatus::Aborted )
return false;
}
#endif
return true;
}
/// <summary>
/// Helper method to dispatch instructions encapsulated into an Action to be executed in the Main- or UI-thread.
/// </summary>
bool Environs::dispatchSync ( Action ^ action )
{
#if defined(WFORMS)
if ( appWindow == nullptr || action == nullptr )
return false;
if ( appWindow->InvokeRequired )
appWindow->Invoke ( action, nullptr );
else
action ();
#elif defined(WINDOWS_PHONE)
Deployment.Current.Dispatcher.BeginInvoke ( action );
#else
if ( System::Windows::Application::Current == nullptr || action == nullptr )
return false;
if ( Thread::CurrentThread == System::Windows::Application::Current->Dispatcher->Thread )
action ();
else
System::Windows::Application::Current->Dispatcher->Invoke ( action, nullptr );
#endif
return true;
}
void Environs::SafeExitThreaded ()
{
CLog ( "SafeExitThreaded" );
pthread_setname_current_envthread ( "Environs.SafeExitThreaded" );
//Dispose(true);
#if defined(WFORMS)
if ( appWindow != nullptr )
{
Action ^ action = gcnew Action ( &Environs::SafeExitThreadedAction );
if ( !dispatch ( action ) )
Debug.WriteLine ( "SafeExitThreaded: No UI thread or window handle available!!" );
appWindow = null;
}
#elif !defined(WINDOWS_PHONE)
if ( System::Windows::Application::Current != nullptr )
{
Action ^ action = gcnew Action ( &Environs::SafeExitThreadedAction );
if ( !dispatch ( action ) )
CWarn ( "SafeExitThreaded: No UI thread or window handle available!!" );
}
#else
/// Windows Phone code... to do...
#endif
}
#else
void Environs::SafeExitThreaded ()
{
CLog ( "SafeExitThreaded" );
pthread_setname_current_envthread ( "Environs.SafeExitThreaded1" );
Environs::SafeExitThreadedAction ();
}
bool IsUIThread ()
{
return false;
}
ref class DispatcherClass
{
Action ^ action;
public:
DispatcherClass ( Action ^ a ) : action ( a ) { }
void Run ()
{
if ( action == nullptr )
return;
action ();
}
};
/// <summary>
/// Helper method to dispatch instructions encapsulated into an Action to be executed in the Main- or UI-thread.
/// </summary>
bool Environs::dispatch ( Action ^ action )
{
DispatcherClass ^ act = gcnew DispatcherClass ( action );
Thread ^ thread = gcnew Thread ( gcnew ThreadStart ( act, &DispatcherClass::Run ) );
if ( thread != nullptr )
thread->Start ();
else
{
act->Run ();
}
return true;
}
/// <summary>
/// Helper method to dispatch instructions encapsulated into an Action to be executed in the Main- or UI-thread.
/// </summary>
bool Environs::dispatchSync ( Action ^ action )
{
action ();
return true;
}
#endif
/// <summary>
/// Safely close the application and shutdown Environs.
/// </summary>
void Environs::SafeExit ()
{
CLog ( "SafeExit" );
Thread ^ thread = gcnew Thread ( gcnew ThreadStart ( &Environs::SafeExitThreaded ) );
if ( thread != nullptr )
thread->Start ();
else
{
CErr ( "SafeExit: Failed to create exit thread!" );
SafeExitThreaded ();
}
}
String ^ Environs::resolveName ( int notification )
{
return Marshal::PtrToStringAnsi ( IntPtr ( (void *) environs::API::ResolveNameN ( notification ) ) );
}
String ^ Environs::ParseCString ( IntPtr cString )
{
if ( cString == IntPtr::Zero )
return "";
return CCharToString ( cString );
}
void Environs::SafeExitThreadedAction ()
{
CVerb ( "SafeExitThreadedAction" );
if ( isShutDown )
return;
isShutDown = true;
#if defined(WFORMS)
// Disposal happens within the OnClose handler
//Dispose();
if ( xnaWindow != nullptr )
{
xnaWindow->Exit ();
xnaWindow = nullptr;
}
#elif !defined(WINDOWS_PHONE)
System::Windows::Application::Current->Shutdown ();
//appWindow.Close();
#else
/// Windows Phone code... to do...
#endif
}
static bool inputLine = false;
static char keyCommand = 'n';
int tryGetTagID ( String ^ input )
{
// parse tag id
int id = 0;
try
{
id = Convert::ToInt32 ( input, 16 );
}
catch ( Exception ^ )
{
}
return id;
}
/// <summary>
/// This is a wrapper used within the Environs framework
/// </summary>
void Environs::MessageEvent ( environs::Source_t source, String ^ msg )
{
//Debug.WriteLine("[INFO] MessageEvent: device [" + nativeID + "] source [" + source + "] msg [" + msg + "]");
BridgeForMessage ( hEnvirons, 0, ( int ) source, msg, msg->Length );
}
/// <summary>
/// This is a wrapper used within the Environs framework
/// </summary>
void Environs::MessageEvent ( String ^ msg )
{
//Debug.WriteLine("[INFO] MessageEvent: device [" + nativeID + "] source [" + source + "] msg [" + msg + "]");
BridgeForMessage ( hEnvirons, 0, ( int ) Source::Platform, msg, msg->Length );
}
void Environs::AppPreviewKeyDown ( Object ^ sender, System::Windows::Input::KeyEventArgs ^ e )
{
if ( e->Key == Key::Escape )
{
SafeExit ();
}
else {
if ( !debug_keys )
return;
if ( inputLine )
{
if ( e->Key == Key::Enter )
{
int id = 0;
inputLine = false;
if ( keyInput == nullptr || keyInput->Length == 0 )
{
MessageEvent ( "Input aborted." );
return;
}
// analysing input
MessageEvent ( ":: " + keyInput );
if ( keyCommand == 'd' )
{
id = tryGetTagID ( keyInput );
if ( id > 0 )
{
//debug_device_tagID = id;
MessageEvent ( "New debug tagID is " + keyInput );
}
else
MessageEvent ( "Debug tagID " + keyInput + " is invalid" );
}
else if ( keyCommand == 'f' )
{
id = tryGetTagID ( keyInput );
if ( id > 0 )
{
MessageEvent ( "Destination TagID is 0x" + String::Format ( "{0:X}", id ) );
if ( (DeviceStatus) environs::API::GetDeviceConnectStatusN ( hEnvirons, id ) == DeviceStatus::Connected )
{
#if !WINDOWS_PHONE
//environs::API::SendFileN ( hEnvirons, id );
#endif
}
else
{
MessageEvent ( "Conncecting to " + id + ". Try sending again after successful connection." );
environs::API::DeviceConnectN ( hEnvirons, id, nullptr, nullptr, CALL_NOWAIT );
}
}
else
MessageEvent ( "TagID " + keyInput + " is invalid" );
}
else if ( keyCommand == 'm' || keyCommand == 'p' )
{
int p = keyInput->IndexOf ( ' ' );
if (/*p < -1 ||*/ p < 2 )
{
MessageEvent ( "Invalid input." );
}
else
{
String ^ ids = keyInput->Substring ( 0, p );
id = tryGetTagID ( ids );
if ( id > 0 )
{
String ^ msg = keyInput->Substring ( p + 1 );
MessageEvent ( "Sending to 0x" + String::Format ( "{0:X}", id ) + " msg: " + msg );
if ( keyCommand == 'm' ) {
IntPtr p = Marshal::StringToHGlobalAuto ( msg );
environs::API::SendMessageN ( hEnvirons, id, nullptr, nullptr, 1, p.ToPointer(), msg->Length );
Marshal::FreeHGlobal ( IntPtr ( p ) );
}
else
environs::API::SendPushNotificationN ( hEnvirons, id, nullptr, nullptr, msg );
}
else
MessageEvent ( "TagID " + ids + " is invalid" );
}
}
else if ( keyCommand == 't' )
{
#if SURFACE2
if ( keyInput [ 0 ] == 'e' )
{
InitRawImageCapture ( new WindowInteropHelper ( appWindow ).Handle );
}
else if ( keyInput [ 0 ] == 'd' )
{
DisposeSurfaceInput ();
}
else
#endif
PushTrackerCommand ( Call::NoWait, trackerIndex, keyInput [ 0 ] );
}
}
else if ( keyCommand == 's' )
{
if ( e->Key == Key::F )
{
inputLine = true;
MessageEvent ( "Enter the destination tagID." );
keyCommand = 'f';
keyInput = "";
}
else if ( e->Key == Key::M || e->Key == Key::P )
{
inputLine = true;
MessageEvent ( "Enter the destination tagID and the message: tagID message..." );
if ( e->Key == Key::P )
keyCommand = 'p';
else
keyCommand = 'm';
keyInput = "";
}
else
{
MessageEvent ( "Unrecognized command" );
inputLine = false;
keyInput = "";
}
}
else
{
if ( e->Key == Key::Space )
keyInput += ' ';
else
{
// To string
String ^ s = Convert::ToString ( e->Key );
if ( s->Length == 1 )
{
//if (e.KeyboardDevice.IsKeyDown(Key.LeftShift)
if ( Keyboard::Modifiers == ModifierKeys::Shift )
s = s->ToUpper ();
else
s = s->ToLower ();
keyInput += s;
}
else if ( s->Length == 2 && s [ 0 ] == 'D' ) // Numbers
{
keyInput += s->Substring ( 1, 1 );
}
}
}
}
else
{
switch ( e->Key )
{
case Key::T:
inputLine = true;
MessageEvent ( "\r\n" );
PushTrackerCommand ( Call::NoWait, trackerIndex, '?' );
MessageEvent ( "Enter command:" );
keyCommand = 't';
keyInput = "";
break;
#ifndef NDEBUG
case Key::Up:
{
if ( !Keyboard::IsKeyDown ( Key::LeftShift ) && !Keyboard::IsKeyDown ( Key::RightShift ) )
break;
int level = GetDebug ();
if ( level < 15 ) {
CLogArg1 ( "KeyDown: Increasing", "debug level", "i", level + 1 );
SetDebug ( level + 1 );
}
break;
}
case Key::Down:
{
if ( !Keyboard::IsKeyDown ( Key::LeftShift ) && !Keyboard::IsKeyDown ( Key::RightShift ) )
break;
int level = GetDebug ();
if ( level > 0 ) {
CLogArg1 ( "KeyDown: Decreasing", "debug level", "i", level - 1 );
SetDebug ( level - 1 );
}
break;
}
case Key::P:
{
/// Get the last deviceID that we are connected to
pthread_mutex_t OBJ_ptr lock = nill;
ObservableCollection<DeviceInstance ^> ^devices = ( ObservableCollection<DeviceInstance ^> ^ ) Environs::GetDevicesBest ( lock );
if ( devices == nullptr )
break;
int i = devices->Count - 1;
for ( ; i >= 0; i-- )
{
if ( devices [ i ]->info_->isConnected )
{
environs::API::RequestPortalStreamN ( hEnvirons, devices [ i ]->nativeID, CALL_NOWAIT, ( int ) PortalType::Any, 0, 0 );
break;
}
}
//if (i < 0)
//{
// devices[i].Connect();
//}
}
break;
case Key::End:
//DeviceInstance device = DeviceList.GetDeviceBestMatchStatic(debug_device_tagID);
//if (device != null)
//{
// if (device.isConnected)
// {
// device.Disconnect();
// }
// else
// device.Connect();
//}
break;
case Key::D:
inputLine = true;
MessageEvent ( "Debug tagID is 0x" + String::Format ( "{0:X}", debug_device_tagID ) );
MessageEvent ( "Enter new debug tagID" );
keyCommand = 'd';
keyInput = "";
break;
case Key::S:
inputLine = true;
MessageEvent ( "Do you want to send a (f)ile or a (p)ush (m)essage?" );
keyCommand = 's';
keyInput = "";
break;
#endif
#if !WINDOWS_PHONE
case Key::B:
{
array<char> ^buffer = gcnew array<char> ( 2048 );
buffer [ 0 ] = Convert::ToByte ( 'a' );
buffer [ 1 ] = Convert::ToByte ( 'b' );
buffer [ 2 ] = Convert::ToByte ( 'c' );
buffer [ 3 ] = Convert::ToByte ( 'd' );
/*environs::API::SendBuffer1 ( hEnvirons, debug_device_tagID, 1, 2048, "noname", gcnew IntPtr ( buffer), 4 );
byte* pByte = buffer;
unsafe
{
fixed ( byte* pByte = buffer )
{
IntPtr intPtr = new IntPtr ( ( void* ) pByte );
SendBuffer ( debug_device_tagID, 1, 2048, "noname", intPtr, 4 );
}
}*/
break;
}
#endif
#ifndef NDEBUG
case Key::G:
{
//int count = Environs.GetDevicesNearbyCount(hEnvirons);
//ObservableCollection<DeviceInstance> devices = null;
//count = Environs.GetDevicesCount1(hEnvirons, MEDIATOR_DEVICE_CLASS_ALL);
//Debug.WriteLine("We have " + count + " available devices");
//devices = Environs.GetDevices0(hEnvirons);
//if (devices != null)
//{
// for (int i = 0; i < devices.Count; i++)
// Debug.WriteLine(devices[i].ToString());
//}
break;
}
case Key::V:
{
environs::API::SetUseTouchVisualizationN ( hEnvirons, !environs::API::GetUseTouchVisualizationN (hEnvirons) );
break;
}
#endif
}
// Send key to application
String ^ sendChar = "";
if ( e->Key == Key::Space )
sendChar = " ";
else
{
// To string
String ^ s = Convert::ToString ( e->Key );
if ( s->Length == 1 )
{
//if (e.KeyboardDevice.IsKeyDown(Key.LeftShift)
if ( Keyboard::Modifiers == ModifierKeys::Shift )
s = s->ToUpper ();
else
s = s->ToLower ();
sendChar = s;
}
else if ( s->Length == 2 && s [ 0 ] == 'D' ) // Numbers
{
sendChar = s->Substring ( 1, 1 );
}
}
MessageEvent ( "K:" + sendChar );
}
}
}
ref class LogBuffer : public IDisposable
{
internal:
static bool logAlive;
static List<String ^> logs;
//static LogBuffer ^ logBuffer = gcnew LogBuffer ();
static LogBuffer ^ logBuffer;
static Thread ^ logThread = nullptr;
static System::Threading::ManualResetEvent ^ logEvent = gcnew System::Threading::ManualResetEvent ( false );
void LogThread ()
{
CLog ( "LogThread" );
pthread_setname_current_envthread ( "Environs.LogThread" );
while ( logAlive ) {
logEvent->WaitOne ();
logEvent->Reset ();
while ( true )
{
String ^ msg = nullptr;
Monitor::Enter ( %logs );
if ( logs.Count > 0 ) {
msg = logs [ 0 ];
logs.RemoveAt ( 0 );
}
Monitor::Exit ( %logs );
if ( msg == nullptr )
break;
environs::API::LogN ( msg, msg->Length );
}
}
}
public:
LogBuffer ()
{
Debug::WriteLine ( CLASS_NAME + "LogBuffer: Construct" );
logAlive = true;
logs.Clear ();
logThread = gcnew Thread ( gcnew ThreadStart ( this, &LogBuffer::LogThread ) );
if ( logThread != nullptr )
logThread->Start ();
}
~LogBuffer ()
{
logAlive = false;
if ( logThread != nullptr && logEvent != nullptr ) {
logEvent->Set ();
logThread->Join ();
}
logThread = nullptr;
logEvent = nullptr;
Debug::WriteLine ( CLASS_NAME + "LogBuffer: Destruct" );
}
static void Add ( String ^ msg )
{
Monitor::Enter ( %logs );
logs.Add ( msg );
logEvent->Set ();
Monitor::Exit ( %logs );
}
};
String ^ GetTimeString ()
{
#ifdef WITH_TIME_STRING
DateTime dt = DateTime::Now;
return dt.ToString ( " ddd MMM dd HH:mm:ss: " );
#else
return "";
#endif
}
/**
* Go through all created instances, stop all Environs activities and release all acquired resources.
*/
StaticDisposer::StaticDisposer ()
{
CVerbVerb ( "StaticDisposer.Construct" );
};
StaticDisposer::~StaticDisposer ()
{
CLog ( "StaticDisposer.Destruct" );
for ( int i = 1; i < ENVIRONS_MAX_ENVIRONS_INSTANCES; i++ )
{
if ( environs::Environs::instancesAPI [ i ] != nullptr )
environs::Environs::instancesAPI [ i ]->DisposeInstance ();
}
Environs::ObjectAPIDispose ();
CVerbVerb ( "StaticDisposer.Destruct: Done" );
};
/**
* Output a log message through the diagonostics debug output.
*
* @param level The severity level of the message.
* @param msg An error message to be logged.
*/
//[ Conditional ( "DEBUG" ) ]
void Utils::Log ( int level, String ^ msg )
{
Log ( level, msg, false );
}
bool Utils::Log ( int level )
{
return ( level <= logLevel );
}
void Utils::Log ( int level, String ^ msg, bool withDateTime )
{
if ( level == ERR_LEVEL )
{
LogE ( msg );
return;
}
if ( level == WARN_LEVEL )
{
LogW ( msg );
return;
}
if ( level <= logLevel )
{
StringBuilder ^ sbl;
if ( withDateTime )
sbl = gcnew StringBuilder ( GetTimeString () );
else
sbl = gcnew StringBuilder ();
if ( level < 2 )
{
sbl->Append ( "[INFO] " );
}
else if ( level < 3 )
{
sbl->Append ( "[TRACE] " );
}
else
{
sbl->Append ( "[VERB] " );
}
sbl->Append ( msg );
LOG_OUT ( sbl );
}
}
/**
* Output an error message through the system console output.
*
* @param msg An error message to be logged.
*/
void Utils::LogE ( String ^ msg )
{
StringBuilder ^ sbl = gcnew StringBuilder ( GetTimeString () + "[ERROR] -- E --> " ); sbl->Append ( msg );
LOG_OUT ( sbl );
}
/**
* Output an error message through the system console output.
*
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
void Utils::LogE ( String ^ className, String^ msg )
{
StringBuilder ^ sbl = gcnew StringBuilder ( GetTimeString () + "[ERROR] -- E --> " ); sbl->Append ( className )->Append ( "." )->Append ( msg );
LOG_OUT ( sbl );
}
/**
* Output a warning through the system console output.
*
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
void Utils::LogW ( String ^ msg )
{
StringBuilder ^ sbl = gcnew StringBuilder ( GetTimeString () + "[WARN] " ); sbl->Append ( msg );
LOG_OUT ( sbl );
}
/**
* Output a warning through the system console output.
*
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
void Utils::LogW ( String ^ className, String ^ msg )
{
StringBuilder ^ sbl = gcnew StringBuilder ( GetTimeString () + "[WARN] " ); sbl->Append ( className )->Append ( "." )->Append ( msg );
LOG_OUT ( sbl );
}
/**
* Output a log message through the diagonostics debug output.
*
* @param level The severity level of the message.
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
//[ Conditional ( "DEBUG" ) ]
void Utils::Log ( int level, String ^ className, String ^ msg )
{
if ( logLevel < level )
return;
StringBuilder ^ sbl = gcnew StringBuilder ( className );
sbl ->Append ( "." )->Append ( msg );
Log ( level, sbl->ToString (), false );
}
/**
* Output a log message also in release builds through the diagonostics debug output.
*
* @param level The severity level of the message.
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
void Utils::Log1 ( String ^ className, String ^ msg )
{
Log ( className, msg );
}
/**
* Output a log message also in release builds through the diagonostics debug output.
*
* @param level The severity level of the message.
* @param className The className that the error message is related to.
* @param msg An error message to be logged.
*/
void Utils::Log ( String ^ className, String ^ msg )
{
StringBuilder ^ sbl = gcnew StringBuilder ( className );
sbl->Append ( "." )->Append ( msg );
Log ( 1, sbl->ToString (), false );
}
String ^ Utils::GetExecPath ()
{
return Environment::CurrentDirectory;
}
bool Utils::CreateUpdateBitmap ( System::Windows::Media::Imaging::WriteableBitmap ^% wbm, AvContext ^ context )
{
if ( wbm == nullptr )
{
int channels = ( context->stride / context->width );
PixelFormat format = PixelFormats::Default;
if ( channels == 1 ) format = PixelFormats::Gray8;
else if ( channels == 3 ) format = PixelFormats::Bgr24;
else if ( channels == 4 ) format = PixelFormats::Bgr32;
else return false;
wbm = gcnew System::Windows::Media::Imaging::WriteableBitmap ( context->width, context->height, 96, 96, format, nullptr );
if ( wbm == nullptr )
return false;
}
memcpy ( wbm->BackBuffer.ToPointer (), context->data->ToPointer (), context->stride * context->height );
wbm->Lock ();
wbm->AddDirtyRect ( Int32Rect ( 0, 0, wbm->PixelWidth, wbm->PixelHeight ) );
wbm->Unlock ();
return true;
}
bool Utils::CreateUpdateBitmap ( System::Windows::Media::Imaging::WriteableBitmap ^% wbm, IntPtr ^ avContext )
{
AvContext ^ context = GetAvContext ( avContext );
if ( context == nullptr )
return false;
return CreateUpdateBitmap ( wbm, context );
}
AvContext ^ Utils::GetAvContext ( IntPtr ^ avContext )
{
AvContext ^ context = gcnew AvContext ();
int* pInt = ( int* ) avContext->ToPointer();
context->width = *pInt++;
context->height = *pInt++;
context->stride = *pInt++;
pInt++; /// skip the 64 bit align spare scatterItem
context->data = gcnew IntPtr ( ( char* ) (size_t) *pInt );
if ( context->data == nullptr )
return nullptr;