--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/javauis/mmapi_akn/baseline/src/cmmavideoframepositioningcontrol.cpp	Wed Sep 01 12:33:18 2010 +0100
@@ -0,0 +1,284 @@
+/*
+* 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 implements FramePositioningControl for video player
+*
+*/
+
+
+//  INCLUDE FILES
+#include <jdebug.h>
+#include <e32base.h>
+#include <e32math.h>
+
+#include "cmmavideoframepositioningcontrol.h"
+
+namespace
+{
+const TInt32 KMMAFramePosMicroSecMultiplier = 1000000;
+}
+
+CMMAVideoFramePositioningControl*
+CMMAVideoFramePositioningControl::NewL(CMMAVideoPlayer* aPlayer)
+{
+    CMMAVideoFramePositioningControl* self =
+        new(ELeave) CMMAVideoFramePositioningControl(aPlayer);
+    return self;
+
+}
+CMMAVideoFramePositioningControl::
+CMMAVideoFramePositioningControl(CMMAVideoPlayer* aPlayer)
+        : CMMAFramePositioningControl(aPlayer), iPlayer(aPlayer)
+{
+    DEBUG("MMA:CMMAVideoFramePositioningControl::CMMAVideoFramePositioningControl");
+}
+
+CMMAVideoFramePositioningControl::~CMMAVideoFramePositioningControl()
+{
+    DEBUG("MMA:CMMAVideoFramePositioningControl::~CMMAVideoFramePositioningControl");
+}
+
+TInt CMMAVideoFramePositioningControl::SeekL(TInt aFrameNumber)
+{
+    DEBUG_INT("CMMAVideoFramePositioningControl::SeekL, aFrameNumber: %d", aFrameNumber);
+
+    RMMFController& controller = iPlayer->Controller();
+
+    // Controller is paused before changing position to increase
+    // accuracy
+    TBool playerStarted = EFalse;
+    if (iPlayer->State() == CMMAPlayer::EStarted)
+    {
+        playerStarted = ETrue;
+    }
+
+    if (playerStarted)
+    {
+        User::LeaveIfError(controller.Pause());
+    }
+
+    // Frame number must be positive
+    TInt frameNumber = aFrameNumber;
+    if (frameNumber < 0)
+    {
+        frameNumber = 0;
+    }
+
+    // Find out framerate of video
+    TReal32 frameRate = 0;
+    GetAndCheckFrameRateL(frameRate);
+
+    // Calculate new media time
+    TReal tempReal = ((TReal32)frameNumber *
+                      KMMAFramePosMicroSecMultiplier) / frameRate;
+    User::LeaveIfError(Math::Round(tempReal, tempReal, 0));
+    TInt64 newMediaTime = tempReal;
+
+    // New media time is clamped to duration
+    TInt err = ClampMediaTime(newMediaTime);
+    // Clamp fails if duration of content is not known.
+    // Two additional resorts are (in preferred order):
+    // 1) Return current frame position if it can be calculated.
+    // 2) Or seek to 0.
+
+    // First resort
+    if (err != KErrNone)
+    {
+        iPlayer->GetMediaTime(&newMediaTime);
+        // Second resort
+        if (newMediaTime < 0)
+        {
+            newMediaTime = 0;
+        }
+    }
+    iPlayer->SetMediaTimeL(&newMediaTime);
+    // Error condition
+    if (newMediaTime < KErrNotFound)
+    {
+        User::Leave(KErrNotFound);
+    }
+
+    // Calculate actually set frame number
+    tempReal = (((TReal32)newMediaTime / KMMAFramePosMicroSecMultiplier) *
+                (TReal32) frameRate);
+    User::LeaveIfError(Math::Round(tempReal, tempReal, 0));
+
+    // Restart controller
+    if (playerStarted)
+    {
+        User::LeaveIfError(controller.Play());
+    }
+
+    return tempReal;
+}
+
+TInt CMMAVideoFramePositioningControl::SkipL(TInt aFramesToSkip)
+{
+    DEBUG_INT("CMMAVideoFramePositioningControl::SkipL, aFramesToSkip: %d", aFramesToSkip);
+
+    RMMFController& controller = iPlayer->Controller();
+
+    // Controller is paused before changing position to increase
+    // accuracy
+    TBool playerStarted = EFalse;
+    if (iPlayer->State() == CMMAPlayer::EStarted)
+    {
+        playerStarted = ETrue;
+    }
+
+    if (playerStarted)
+    {
+        User::LeaveIfError(controller.Pause());
+    }
+
+    // Find out framerate of video
+    TReal32 frameRate = 0;
+    GetAndCheckFrameRateL(frameRate);
+
+    // Find out current media time
+    TInt64 currentMediaTime = 0;
+    iPlayer->GetMediaTime(&currentMediaTime);
+
+    // Error condition
+    if (currentMediaTime < KErrNone)
+    {
+        User::Leave(KErrNotFound);
+    }
+
+    // Find out current frame number
+    TReal tempReal =
+        ((TReal32) currentMediaTime / KMMAFramePosMicroSecMultiplier) *
+        frameRate;
+    User::LeaveIfError(Math::Round(tempReal, tempReal, 0));
+    TInt currentFrameNumber = tempReal;
+
+    // Calculate new media time
+    TInt64 newMediaTime = currentMediaTime +
+                          (((TReal32) aFramesToSkip / frameRate) * KMMAFramePosMicroSecMultiplier);
+
+    // New media time is clamped to duration
+    TInt err = ClampMediaTime(newMediaTime);
+
+    // If clamping fails, no frames are skipped
+    TInt framesSkipped = 0;
+    if (err == KErrNone)
+    {
+        iPlayer->SetMediaTimeL(&newMediaTime);
+        // Error condition
+        if (newMediaTime < KErrNone)
+        {
+            User::Leave(KErrNotFound);
+        }
+
+        // Calculate actual amount of frames skipped
+        tempReal = ((((TReal32) newMediaTime / KMMAFramePosMicroSecMultiplier) *
+                     (TReal32) frameRate) - currentFrameNumber);
+
+        User::LeaveIfError(Math::Round(tempReal, tempReal, 0));
+        framesSkipped = tempReal;
+    }
+
+    // Restart controller
+    if (playerStarted)
+    {
+        User::LeaveIfError(controller.Play());
+    }
+
+    return framesSkipped;
+}
+
+void CMMAVideoFramePositioningControl::MapFrameToTimeL(TInt aFrameNumber, TInt64* aMediaTime)
+{
+    DEBUG_INT("CMMAVideoFramePositioningControl::MapFrameToTimeL, aFrameNumber: %d", aFrameNumber);
+    // Find out framerate of video
+    TReal32 frameRate = 0;
+    GetAndCheckFrameRateL(frameRate);
+
+    // Find out frame mediatime
+    TInt64 frameMediaTime =
+        ((TReal32)aFrameNumber / (TReal32)frameRate) *
+        KMMAFramePosMicroSecMultiplier;
+
+    TInt64 duration;
+    iPlayer->GetDuration(&duration);
+
+    if (frameMediaTime < 0)
+    {
+        frameMediaTime = KErrNotFound;
+    }
+    else if (frameMediaTime > duration)
+    {
+        frameMediaTime = KErrNotFound;
+        // With some medias last frame media time is few hundred microsec's
+        // over duration. This is because framerate is not accurate.
+        // If given frame number is last frame and frameMediaTime > duration,
+        // return duration
+        // Find out last frame
+        TReal lastFrame = (frameRate * (TReal32)duration) /
+                          KMMAFramePosMicroSecMultiplier;
+        User::LeaveIfError(Math::Round(lastFrame, lastFrame, 0));
+        if (aFrameNumber == lastFrame)
+        {
+            frameMediaTime = duration;
+        }
+    }
+    *aMediaTime = frameMediaTime;
+}
+
+TInt CMMAVideoFramePositioningControl::MapTimeToFrameL(TInt64* aMediaTime)
+{
+    DEBUG_INT("CMMAVideoFramePositioningControl::MapTimeToFrameL, aMediaTime: %d", *aMediaTime);
+    TInt64 mediaTime = *aMediaTime;
+
+    // If given media time is < 0 or > duration, cannot map time to frame
+    // conversion fails, -1 is returned
+    TInt64 duration;
+    iPlayer->GetDuration(&duration);
+    if (mediaTime > duration || mediaTime < 0)
+    {
+        return KErrNotFound;
+    }
+
+    // Find out framerate of video
+    TReal32 frameRate = 0;
+    GetAndCheckFrameRateL(frameRate);
+
+    // Calculate frame number from media time
+    TReal tempReal = (TInt)((TReal64)(mediaTime * frameRate) /
+                            KMMAFramePosMicroSecMultiplier);
+    User::LeaveIfError(Math::Round(tempReal, tempReal, 0));
+
+    return tempReal;
+}
+
+
+void CMMAVideoFramePositioningControl::GetAndCheckFrameRateL(
+    TReal32& aFrameRate)
+{
+    DEBUG("CMMAVideoFramePositioningControl::GetAndCheckFrameRateL");
+    RMMFVideoControllerCustomCommands customCommands =
+        RMMFVideoControllerCustomCommands(iPlayer->Controller());
+
+    User::LeaveIfError(customCommands.GetFrameRate(aFrameRate));
+    DEBUG_INT("CMMAVideoFramePositioningControl::GetAndCheckFrameRateL, aFrameRate: %d", aFrameRate);
+    if (aFrameRate <= 0)
+    {
+        // zero framerate is not accepted because cannot
+        // divide by zero. Negative framerate is not
+        // acceptable aswell.
+        DEBUG("CMMAVideoFramePositioningControl::GetAndCheckFrameRateL: invalid framerate");
+        User::Leave(KErrNotFound);
+    }
+}
+
+//  END OF FILE