3gp.cpp

6410BSP1

/*
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is MPEG4IP.
 * 
 * The Initial Developer of the Original Code is Cisco Systems Inc.
 * Portions created by Cisco Systems Inc. are
 * Copyright (C) Cisco Systems Inc. 2001.  All Rights Reserved.
 * 
 * 3GPP features implementation is based on 3GPP's TS26.234-v5.60,
 * and was contributed by Ximpo Group Ltd.
 *
 * Portions created by Ximpo Group Ltd. are
 * Copyright (C) Ximpo Group Ltd. 2003, 2004.  All Rights Reserved.
 *
 * Contributor(s): 
 *              Ximpo Group Ltd.          [e-mail]
 */

#include "mp4common.h"

#define _3GP_MAJOR_BRAND "3gp5"
#define _3GP_MINOR_VERSION 0x0001

void MP4File::Make3GPCompliant(const char* fileName,  char* majorBrand, u_int32_t minorVersion, char** supportedBrands, u_int32_t supportedBrandsCount, bool deleteIodsAtom)
{
    char brand[5] = "3gp5";
    char* _3gpSupportedBrands[1] = { (char*)&brand };
    
    if (majorBrand) {
        if (!supportedBrands || !supportedBrandsCount) {
            printf("\n[%s]  %s", "MP4File::Make3GPCompliant", "Invalid parameters");
            throw new MP4Error("Invalid parameters", "MP4File::Make3GPCompliant");
        }
    }

    MakeFtypAtom(
            majorBrand ? majorBrand : (char*)brand,
            majorBrand ? minorVersion  : _3GP_MINOR_VERSION,
            majorBrand ? supportedBrands : (char**)_3gpSupportedBrands,
            majorBrand ? supportedBrandsCount : 1);

    if (deleteIodsAtom) {
        // Delete the iods atom, if it exists....
        MP4Atom* iodsAtom = m_pRootAtom->FindAtom("moov.iods");
        if (iodsAtom) {
            MP4Atom* moovAtom = m_pRootAtom->FindAtom("moov");
            ASSERT(moovAtom);

            moovAtom->DeleteChildAtom(iodsAtom);
        }
    }

}

void MP4File::MakeFtypAtom(char* majorBrand, u_int32_t minorVersion, char** supportedBrands, u_int32_t supportedBrandsCount)
{
    bool rewriteNeeded = false;
    u_int32_t currentSupportedBrandsCount;
    u_int32_t i;

        
    MP4Atom* ftypAtom = m_pRootAtom->FindAtom("ftyp");
    if (ftypAtom == NULL) {
      ftypAtom = InsertChildAtom(m_pRootAtom, "ftyp", 0);
    }
    if (majorBrand == NULL)
      return;
    MP4StringProperty* pMajorBrandProperty;
    ftypAtom->FindProperty(
        "ftyp.majorBrand",
        (MP4Property**)&pMajorBrandProperty);

    pMajorBrandProperty->SetValue(majorBrand);


    MP4Integer32Property* pMinorVersionProperty;
    ftypAtom->FindProperty(
        "ftype.minorVersion",
        (MP4Property**)&pMinorVersionProperty);

    pMinorVersionProperty->SetValue(minorVersion);

    MP4Integer32Property* pCompatibleBrandsCountProperty;
    ftypAtom->FindProperty(
        "ftyp.compatibleBrandsCount",
        (MP4Property**)&pCompatibleBrandsCountProperty);

    currentSupportedBrandsCount = pCompatibleBrandsCountProperty->GetValue();

    MP4TableProperty* pCompatibleBrandsProperty;
    ftypAtom->FindProperty(
        "ftyp.compatibleBrands",
        (MP4Property**)&pCompatibleBrandsProperty);

    MP4StringProperty* pBrandProperty = (MP4StringProperty*)
        pCompatibleBrandsProperty->GetProperty(0);
    ASSERT(pBrandProperty);

    for (i = 0 ; i < ((currentSupportedBrandsCount > supportedBrandsCount) ? supportedBrandsCount : currentSupportedBrandsCount) ; i++) {
        pBrandProperty->SetValue(supportedBrands[i], i);

    }

    if (i < supportedBrandsCount) {
        for ( ; i < supportedBrandsCount ; i++) {
            pBrandProperty->AddValue(supportedBrands[i]);
        }
    }

    if (currentSupportedBrandsCount != supportedBrandsCount) {
        rewriteNeeded = true;
        pBrandProperty->SetCount(supportedBrandsCount);
        pCompatibleBrandsCountProperty->SetReadOnly(false);
        pCompatibleBrandsCountProperty->SetValue(supportedBrandsCount);
        pCompatibleBrandsCountProperty->SetReadOnly(true);
    }

}