javauis/mmapi_qt/baseline/javasrc.mmf/com/nokia/microedition/media/BufferSourceStream.java
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 04 Oct 2010 00:10:53 +0300
changeset 79 2f468c1958d0
parent 23 98ccebc37403
permissions -rw-r--r--
Revision: v2.2.15 Kit: 201039
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
23
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     1
/*
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     2
* Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     3
* All rights reserved.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     4
* This component and the accompanying materials are made available
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     5
* under the terms of "Eclipse Public License v1.0"
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     6
* which accompanies this distribution, and is available
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     7
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     8
*
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
     9
* Initial Contributors:
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    10
* Nokia Corporation - initial contribution.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    11
*
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    12
* Contributors:
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    13
*
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    14
* Description:  SourceStream that buffers data from another SourceStream.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    15
*
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    16
*/
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    17
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    18
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    19
package com.nokia.microedition.media;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    20
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    21
import java.io.IOException;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    22
import javax.microedition.media.protocol.SourceStream;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    23
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    24
/**
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    25
 * SourceStream that buffers data from another SourceStream.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    26
 *
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    27
 */
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    28
public class BufferSourceStream extends InputStreamSourceStream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    29
{
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    30
    // Deferred buffer size
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    31
    private static final int BUFFER_SIZE = 5120;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    32
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    33
    // Stream to buffer
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    34
    SourceStream iSourceStream;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    35
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    36
    byte[] iBuffer;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    37
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    38
    // stream read position
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    39
    int iPos;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    40
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    41
    /**
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    42
     * Constructor.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    43
     * @param aInputStream An InputStream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    44
     */
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    45
    public BufferSourceStream(SourceStream aSourceStream)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    46
    {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    47
        iSourceStream = aSourceStream;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    48
    }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    49
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    50
    /**
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    51
     * Return header data.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    52
     * @return header data
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    53
     */
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    54
    public byte[] getHeader() throws IOException
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    55
    {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    56
        // Read header if this method is called for the first time
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    57
        if (iBuffer == null)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    58
        {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    59
            byte[] tmpBuffer = new byte[ BUFFER_SIZE ];
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    60
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    61
            int bytesInBuffer = iSourceStream.read(tmpBuffer, 0, BUFFER_SIZE);
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    62
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    63
            // bytesInBuffer is the total number of bytes read into the buffer,
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    64
            // or -1 if there is no more data because the end of the stream has
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    65
            // been reached.
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    66
            if (bytesInBuffer >= 0)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    67
            {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    68
                iBuffer = new byte[ bytesInBuffer ];
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    69
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    70
                System.arraycopy(tmpBuffer, 0,
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    71
                                 iBuffer, 0, bytesInBuffer);
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    72
            }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    73
            else
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    74
            {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    75
                throw new IOException();
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    76
            }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    77
        }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    78
        return iBuffer;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    79
    }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    80
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    81
    /**
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    82
     * Read from Input Stream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    83
     * @param buffer Input Stream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    84
     * @param offset where reading starts
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    85
     * @param length length of read data
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    86
     * @return bytes read
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    87
     * @throws IOException
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    88
     */
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    89
    public int read(byte[] aBuffer, int aOffset, int aLength) throws IOException
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    90
    {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    91
        // bytes read from internal buffer
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    92
        int bytesFromBuffer = 0;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    93
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    94
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    95
        if ((iBuffer != null) &&   // read from iBuffer if getHeader is called
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    96
                (iPos < iBuffer.length))
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    97
        {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    98
            // Need to read from buffer
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
    99
            if (aLength < iBuffer.length - iPos)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   100
            {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   101
                // aLength bytes can be read from buffer
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   102
                bytesFromBuffer = aLength;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   103
            }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   104
            else
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   105
            {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   106
                // aLength cannot be read from buffer
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   107
                // read all there is available
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   108
                bytesFromBuffer = iBuffer.length - iPos;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   109
            }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   110
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   111
            System.arraycopy(iBuffer, iPos,
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   112
                             aBuffer, aOffset, bytesFromBuffer);
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   113
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   114
            // move stream position
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   115
            iPos += bytesFromBuffer;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   116
            return bytesFromBuffer;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   117
        }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   118
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   119
        // bytes read from iSourceStream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   120
        int bytesFromStream = 0;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   121
        // Check if bytes are needed from SourceStream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   122
        if (bytesFromBuffer < aLength)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   123
        {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   124
            bytesFromStream = iSourceStream.read(aBuffer,
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   125
                                                 bytesFromBuffer,
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   126
                                                 aLength - bytesFromBuffer);
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   127
            if (bytesFromStream != -1)
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   128
            {
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   129
                // move stream position, if not end of stream
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   130
                iPos += bytesFromStream;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   131
            }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   132
        }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   133
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   134
        return bytesFromStream;
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   135
    }
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   136
}
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   137
98ccebc37403 Revision: v2.1.24
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   138
// End of File