ijglwrap.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: ijglwrap.cpp,v 1.1.26.1 2004/07/09 01:53:22 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
 * are subject to the current version of the RealNetworks Public
 * Source License (the "RPSL") available at
 * http://www.helixcommunity.org/content/rpsl unless you have licensed
 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
 * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
 * will apply. You may also obtain the license terms directly from
 * RealNetworks.  You may not use this file except in compliance with
 * the RPSL or, if you have a valid RCSL with RealNetworks applicable
 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
 * contents of the file.
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL") in which case the provisions of the GPL are applicable
 * instead of those above. If you wish to allow use of your version of
 * this file only under the terms of the GPL, and not to allow others
 * to use your version of this file under the terms of either the RPSL
 * or RCSL, indicate your decision by deleting the provisions above
 * and replace them with the notice and other provisions required by
 * the GPL. If you do not delete the provisions above, a recipient may
 * use your version of this file under the terms of any one of the
 * RPSL, the RCSL or the GPL.
 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
 * This file, and the files included with this file, is distributed
 * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
 * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
 * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
 * ENJOYMENT OR NON-INFRINGEMENT.
 * 
 * Technology Compatibility Kit Test Suite(s) Location:
 *    http://www.helixcommunity.org/content/tck
 * 
 * Contributor(s):
 * 
 * ***** END LICENSE BLOCK ***** */

// system
#include <stdio.h>
#include <setjmp.h>

// include
#include "hxtypes.h"
#include "hxcom.h"
#include "hxresult.h"
#include "ihxpckts.h"

// pnmisc
#include "netbyte.h"
#include "baseobj.h"

// pncont
#include "hxbuffer.h"

// pxcomlib
#include "glist.h"
#include "gstring.h"
#include "pxtransp.h"

// jpeglib
#include "ijglwrap.h"
extern "C"
{
#include "jbuffsrc.h"
#include "jbuffdst.h"
}

// pndebug
#include "hxheap.h"
#ifdef _DEBUG
#undef HX_THIS_FILE		
static char HX_THIS_FILE[] = __FILE__;
#endif

CIJGLibraryWrapper::CIJGLibraryWrapper()
{
    // Set the state
    m_lRefCount           = 0;
    m_ulState             = kStateNotCreated;
    m_pImageBuffer        = NULL;
    m_ulImageBufferSize   = 0;
    m_ulPadWidth          = 0;
    m_bRowsInverted       = FALSE;
    m_bSuspended          = FALSE;
    m_lSessionHandle      = 0;
    m_bNeedPacket         = TRUE;
    m_bValid              = TRUE;
    m_ulLastSeqNum        = 0;
    m_bBigEndian          = FALSE;
    m_pLastOpaque         = NULL;
    m_ulOpacity           = 255;
    m_bChromaKeySpecified = FALSE;
    m_ulChromaKey         = 0;
    m_ulChromaKeyTol      = 0;
    m_ulChromaKeyOpacity  = 0;
}

CIJGLibraryWrapper::~CIJGLibraryWrapper()
{
    Terminate();
}

STDMETHODIMP CIJGLibraryWrapper::QueryInterface(REFIID riid, void** ppvObj)
{
    HX_RESULT retVal = HXR_OK;

    if (IsEqualIID(riid, IID_IUnknown))
    {
        AddRef();
        *ppvObj = (IUnknown *) this;
    }
    else
    {
        *ppvObj = NULL;
        retVal  = HXR_NOINTERFACE;
    }

    return retVal;
}

STDMETHODIMP_(UINT32) CIJGLibraryWrapper::AddRef()
{
    return InterlockedIncrement(&m_lRefCount);
}

STDMETHODIMP_(UINT32) CIJGLibraryWrapper::Release()
{
    
    if (InterlockedDecrement(&m_lRefCount) > 0)
        return m_lRefCount;

    delete this;

    return 0;
}

HX_RESULT CIJGLibraryWrapper::Initialize(UINT32 ulBufferOffset)
{
    /* Check the state */
    if (m_ulState != kStateNotCreated)
    {
        return HXR_UNEXPECTED;
    }

    /* Initialize the error manager */
    m_cDecompress.err = (struct jpeg_error_mgr *) &m_cErrMgr;

    /* Set up the default methods we won't override */
    jpeg_std_error(&m_cErrMgr.m_cPubErrMgr);

    /* Set the fields in the public manager we want to override */
    m_cErrMgr.m_cPubErrMgr.error_exit     = ErrorExit;
    m_cErrMgr.m_cPubErrMgr.output_message = OutputMessage;

    /* Give the string enough to hold the biggest error string */
    if (m_cErrMgr.m_cErrStr.reserve(JMSG_LENGTH_MAX))
    {
        return HXR_OUTOFMEMORY;
    }

    /* Create the decompression object */
    jpeg_create_decompress(&m_cDecompress);

    /* Set the state */
    m_ulState = kStateCreated;

    /* Now we initialize the source manager */
    m_cDecompress.src = (struct jpeg_source_mgr *) &m_cSrcMgr;

    /* Set all the values in the source manager */
    m_cSrcMgr.m_cPubSrcMgr.init_source       = InitSource;
    m_cSrcMgr.m_cPubSrcMgr.fill_input_buffer = FillInputBuffer;
    m_cSrcMgr.m_cPubSrcMgr.skip_input_data   = SkipInputData;
    m_cSrcMgr.m_cPubSrcMgr.resync_to_restart = jpeg_resync_to_restart;
    m_cSrcMgr.m_cPubSrcMgr.term_source       = TermSource;
    m_cSrcMgr.m_cPubSrcMgr.bytes_in_buffer   = 0;
    m_cSrcMgr.m_cPubSrcMgr.next_input_byte   = NULL;

    /* Reset the list and the current index */
    m_cSrcMgr.m_cBufferList.EraseAll();
    m_cSrcMgr.m_lCurrentIndex  = -1;
    m_cSrcMgr.m_bFirstFill     = TRUE;
    m_cSrcMgr.m_ulBufferOffset = ulBufferOffset;

    /* Set the flags */
    m_bSuspended    = FALSE;

    // Check the endian-ness
    m_bBigEndian = TestBigEndian(); // FALSE if little-endian (intel)

    return HXR_OK;
}

void CIJGLibraryWrapper::Terminate()
{
    /* Release the IHXBuffer objects remaining in our list */
    for (GListIterator itr  = m_cSrcMgr.m_cBufferList.Begin();
                       itr != m_cSrcMgr.m_cBufferList.End(); itr++)
    {
        /* Get the pointer from the iterator */
        IHXBuffer *pBuffer = (IHXBuffer *) *itr;
        HX_RELEASE(pBuffer);
    }

    /* Now erase the list */
    m_cSrcMgr.m_cBufferList.EraseAll();

    /* Destroy the decompression object */
    jpeg_destroy_decompress(&m_cDecompress);

    // Release the last opaque buffer
    HX_RELEASE(m_pLastOpaque);

    /* Set the state */
    m_ulState = kStateNotCreated;
}

void CIJGLibraryWrapper::AppendBuffer(IHXBuffer *pBuffer)
{
    /* Check for input error conditions */
    if (pBuffer == NULL)
    {
        return;
    }

    /* Append the buffer to the list */
    m_cSrcMgr.m_cBufferList.PushBack((void *) pBuffer);

    /* Add a reference to this object */
    pBuffer->AddRef();

    // If we were suspended, then clear the suspended flag
    m_bSuspended = FALSE;
}

HX_RESULT CIJGLibraryWrapper::ReadHeader(IHXValues *pValues)
{
    /* Check for input error conditions */
    if (pValues == NULL)
    {
        return HXR_INVALID_PARAMETER;
    }

    /* Check the state */
    if (m_ulState != kStateCreated)
    {
        return HXR_UNEXPECTED;
    }

    /*
     * Set our longjmp() parameters. This is where we will
     * come in the case of a fatal error.
     */
    if (setjmp(m_cErrMgr.m_cSetJmpBuf))
    {
        /* If we get here, the JPEG code has signaled a fatal error. */
        jpeg_destroy_decompress(&m_cDecompress);
        m_ulState = kStateFatalError;
        return HXR_FAILED;
    }

    /* Read the header */
    boolean bRet = jpeg_read_header(&m_cDecompress, TRUE);
    if (bRet == FALSE)
    {
        m_bSuspended = TRUE;
        return HXR_OK;
    }

    /* Set the parameters */
    pValues->SetPropertyULONG32("InputImageWidth",  (UINT32) m_cDecompress.image_width);
    pValues->SetPropertyULONG32("InputImageHeight", (UINT32) m_cDecompress.image_height);
    pValues->SetPropertyULONG32("NumComponents",    (UINT32) m_cDecompress.num_components);

    /* Set the state */
    m_ulState = kStateHeaderRead;

    return HXR_OK;
}

HX_RESULT CIJGLibraryWrapper::ReadHeader()
{
    HX_RESULT retVal = HXR_OK;

    if (m_ulState == kStateCreated)
    {
        // Set our longjmp() parameters. This is where we will
        // come in the case of a fatal error.
        if (setjmp(m_cErrMgr.m_cSetJmpBuf))
        {
            // If we get here, the JPEG code has signaled a fatal error.
            jpeg_destroy_decompress(&m_cDecompress);
            m_ulState = kStateFatalError;
            return HXR_FAILED;
        }

        // Read the header
        boolean bRet = jpeg_read_header(&m_cDecompress, TRUE);
        if (bRet)
        {
            // Set the state
            m_ulState = kStateHeaderRead;
        }
        else
        {
            m_bSuspended = TRUE;
        }
    }
    else
    {
        retVal = HXR_UNEXPECTED;
    }

    return retVal;
}

HX_RESULT CIJGLibraryWrapper::SetOutputParameters(BYTE  *pImageBuffer,
                                                  UINT32 ulImageBufferSize,
                                                  UINT32 ulPadWidth,
                                                  BOOL   bRowsInverted)
{
    /* Check for input error conditions */
    if (pImageBuffer      == NULL ||
        ulImageBufferSize == 0    ||
        ulPadWidth        == 0)
    {
        return HXR_INVALID_PARAMETER;
    }

    /* Check the state */
    if (m_ulState != kStateHeaderRead)
    {
        return HXR_UNEXPECTED;
    }

    /* Set the output member variables */
    m_pImageBuffer      = pImageBuffer;
    m_ulImageBufferSize = ulImageBufferSize;
    m_ulPadWidth        = ulPadWidth;
    m_bRowsInverted     = bRowsInverted;

    return HXR_OK;
}

void CIJGLibraryWrapper::GetLastPacketBuffer(IHXBuffer **ppBuffer)
{
    if (m_cSrcMgr.m_cBufferList.Size() > 0)
    {
        *ppBuffer = (IHXBuffer *) m_cSrcMgr.m_cBufferList.Last();
    }
    else
    {
        *ppBuffer = NULL;
    }
}

HX_RESULT CIJGLibraryWrapper::Decompress()
{
    if (m_ulState != kStateHeaderRead       &&
        m_ulState != kStateStarted          &&
        m_ulState != kStateReadingScanlines &&
        m_ulState != kStateReadingCompleted)
    {
        return HXR_UNEXPECTED;
    }

    /*
     * Set our longjmp() parameters. This is where we will
     * come in the case of a fatal error.
     */
    if (setjmp(m_cErrMgr.m_cSetJmpBuf))
    {
        /* If we get here, the JPEG code has signaled a fatal error. */
        jpeg_destroy_decompress(&m_cDecompress);
        return HXR_FAILED;
    }

    /* State loop */
    boolean bRet;
    do
    {
        if (m_ulState == kStateHeaderRead)
        {
            /* Start the decompression */
            bRet = jpeg_start_decompress(&m_cDecompress);
            if (bRet == TRUE)
            {
                /* We had enough data */
                m_bSuspended = FALSE;
                /* Set the new state */
                m_ulState    = kStateStarted;
            }
            else
            {
                /* We suspended */
                m_bSuspended = TRUE;
            }
        }
        else if (m_ulState == kStateStarted)
        {
            /* Decompress the image */
            while (m_cDecompress.output_scanline < m_cDecompress.output_height)
            {
                /* Compute the point in the buffer to write into */
                BYTE* pRowBuf = NULL;
                if (m_bRowsInverted)
                {
                    pRowBuf = m_pImageBuffer +
                              (m_cDecompress.output_height - 1 - m_cDecompress.output_scanline) * m_ulPadWidth;
                }
                else
                {
                    pRowBuf = m_pImageBuffer + m_cDecompress.output_scanline * m_ulPadWidth;
                }
                /* Read a scanline */
                UINT32 ulNumScanLines = jpeg_read_scanlines(&m_cDecompress, &pRowBuf, 1);
                if (ulNumScanLines == 0)
                {
                    m_bSuspended = TRUE;
                    break;
                }
                if (m_cDecompress.out_color_space == JCS_GRAYSCALE)
                {
                    ExpandGrayToRGB(pRowBuf, (UINT32) m_cDecompress.output_width, m_bBigEndian);
                }
                else
                {
                    if (m_bBigEndian)
                    {
                        SwapDWordBytes((UINT32*) pRowBuf, m_cDecompress.output_width);
                    }
                }
                if (m_ulOpacity < 255 || m_bChromaKeySpecified)
                {
                    ProcessOpacityAndChromaKey(pRowBuf,
                                               (UINT32) m_cDecompress.output_width,
                                               m_ulOpacity,
                                               m_bChromaKeySpecified,
                                               m_ulChromaKey,