--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/mmapi_qt/baseline/src/cmmasnapshot.cpp Tue May 11 16:07:20 2010 +0300
@@ -0,0 +1,248 @@
+/*
+* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: This class takes snapshot and resizes bitmap if needed.
+*
+*/
+
+
+// INCLUDE FILES
+#include <logger.h>
+
+#include "cmmasnapshot.h"
+#include "mmmaguiplayer.h"
+#include "mmmasnapshotreadycallback.h"
+#include "mmmasnapshot.h"
+
+// CONSTANTS
+const TInt KIgnoreSize = -1;
+
+
+// CONSTRUCTION
+CMMASnapshot* CMMASnapshot::NewL(MMMAGuiPlayer* aGuiPlayer,
+ MMMASnapshotReadyCallback& aCallBack)
+{
+ CMMASnapshot* self = new(ELeave) CMMASnapshot(aGuiPlayer,
+ aCallBack);
+ CleanupStack::PushL(self);
+ self->ConstructL();
+ CleanupStack::Pop(); // self
+ return self;
+}
+
+CMMASnapshot::~CMMASnapshot()
+{
+ if (iScaler)
+ {
+ iScaler->Cancel();
+ delete iScaler;
+ }
+ if (iEncoder)
+ {
+ iEncoder->Cancel();
+ delete iEncoder;
+ }
+ delete iBitmap;
+ delete iBuffer;
+ delete iSettings;
+}
+
+void CMMASnapshot::ConstructL()
+{
+ CActiveScheduler::Add(this);
+ iScaler = CBitmapScaler::NewL();
+}
+
+CMMASnapshot::CMMASnapshot(MMMAGuiPlayer* aGuiPlayer,
+ MMMASnapshotReadyCallback& aCallBack):
+ CActive(EPriorityStandard),
+ iEncoding(MMMASnapshot::EBitmap),
+ iCallBack(aCallBack),
+ iState(EIdle)
+{
+ iGUIPlayer = aGuiPlayer;
+}
+
+void CMMASnapshot::TakeSnapShotL(const TDesC& aProperties)
+{
+ // snapshot sequence is not finished
+ __ASSERT_DEBUG(iState == EIdle, User::Invariant());
+ // image buffer must be taken with ImageBuffer before taking new snapshot
+ __ASSERT_DEBUG(iBuffer == NULL, User::Invariant());
+
+ CMMAImageSettings* settings
+ = TMMAParameterValidator::ValidateImagePropertiesL(aProperties);
+ CleanupStack::PushL(settings);
+
+ delete iSettings;
+ CleanupStack::Pop(settings);
+ iSettings = settings;
+
+ // take snapshot from player. RunL is called when image is ready
+ // or error occures
+ iState = ETakingSnapshot;
+ TSize snapshotSize(iSettings->iWidth, iSettings->iHeight);
+ iEncoding = iGUIPlayer->SnapshoterL()->TakeSnapshotL(&iStatus,
+ snapshotSize,
+ *iSettings);
+ SetActive();
+}
+
+HBufC8* CMMASnapshot::ImageBuffer()
+{
+ // this must not be called when snapshot sequence is running
+ __ASSERT_DEBUG(iState == EIdle, User::Invariant());
+ HBufC8* buffer = iBuffer;
+ // caller takes ownership of the buffer
+ iBuffer = NULL;
+ return buffer;
+}
+
+void CMMASnapshot::ResizeL()
+{
+ iState = EResizing;
+ TSize imageSize(iBitmap->SizeInPixels());
+ if (iSettings->iWidth != KIgnoreSize)
+ {
+ imageSize.iWidth = iSettings->iWidth;
+ }
+ if (iSettings->iHeight != KIgnoreSize)
+ {
+ imageSize.iHeight = iSettings->iHeight;
+ }
+ if (imageSize == iBitmap->SizeInPixels())
+ {
+ // no user resizing needed, continue sequence
+ EncodeL();
+ }
+ else
+ {
+ iScaler->Scale(&iStatus, *iBitmap, imageSize, EFalse);
+ SetActive();
+ }
+}
+
+void CMMASnapshot::EncodeL()
+{
+ // CImageEncoder cannot be reused, so have to make it every time
+ CImageEncoder* encoder = CImageEncoder::DataNewL(iBuffer, *iSettings->iMimeType);
+ delete iEncoder;
+ iEncoder = encoder;
+
+ iState = EEncoding;
+ iEncoder->Convert(&iStatus, *iBitmap, iSettings->iImageData);
+ SetActive();
+}
+
+void CMMASnapshot::Completed(TInt aError)
+{
+ iStatus = aError;
+ iCallBack.SnapshotReady();
+}
+
+void CMMASnapshot::RunL()
+{
+ if (iStatus != KErrNone)
+ {
+ // Error has occured, inform java side and change state
+ iState = EIdle;
+ Completed(iStatus.Int());
+ return;
+ }
+
+ switch (iState)
+ {
+ case ETakingSnapshot:
+ {
+ LOG1( EJavaMMAPI, EInfo, "MMA::CMMASnapshot::RunL: iEncoding = %d", iEncoding);
+ if (iEncoding == MMMASnapshot::EEncoded)
+ {
+ // take encoded image from player.
+ // Ownership transfers to this class.
+ iBuffer = iGUIPlayer->SnapshoterL()->SnapshotEncoded();
+ if (!iBuffer)
+ {
+ // error has occured with taking image
+ Completed(KErrNotFound);
+ }
+ // Image is ready, update internal state and inform listener
+ // Encoded images are not resized
+ iState = EIdle;
+ Completed(KErrNone);
+ }
+ else
+ {
+ // take bitmap from player.
+ // Ownership transfers to this class.
+ iBitmap = iGUIPlayer->SnapshoterL()->SnapshotBitmap();
+ if (!iBitmap)
+ {
+ // error has occured with taking image
+ Completed(KErrNotFound);
+ }
+ // Continue to next state
+ ResizeL();
+ }
+ break;
+ }
+ case EResizing:
+ {
+ // Continue to next state
+ EncodeL();
+ break;
+ }
+ case EEncoding:
+ {
+ delete iEncoder;
+ iEncoder = NULL;
+
+ delete iBitmap;
+ iBitmap = NULL;
+ iState = EIdle;
+ // encoding is ready, inform listener
+ Completed(KErrNone);
+ break;
+ }
+ default:
+ {
+ // unknown state
+ __ASSERT_DEBUG(EFalse, User::Invariant());
+ }
+ }
+}
+
+TInt CMMASnapshot::RunError(TInt aError)
+{
+ // Reset state
+ iState = EIdle;
+ // Pass error code to observer
+ Completed(aError);
+
+ return KErrNone;
+}
+
+void CMMASnapshot::DoCancel()
+{
+ // snapshot taking cannot be cancelled
+ if (iScaler)
+ {
+ iScaler->Cancel();
+ }
+ if (iEncoder)
+ {
+ iEncoder->Cancel();
+ }
+ iState = EIdle;
+}
+
+// END OF FILE