/* * * @APPLE_LICENSE_HEADER_START@ * * Copyright (c) 1999-2008 Apple Inc. All Rights Reserved. * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ * */ // $Id: QTAtom_tkhd.cpp,v 1.1 2006/01/05 13:20:36 murata Exp $ // // QTAtom_tkhd: // The 'tkhd' QTAtom class. // ------------------------------------- // Includes // #include #include #include "QTFile.h" #include "QTAtom.h" #include "QTAtom_tkhd.h" // ------------------------------------- // Constants // const int tkhdPos_VersionFlags = 0; const int tkhdPos_CreationTime = 4; const int tkhdPos_ModificationTime = 8; const int tkhdPos_TrackID = 12; const int tkhdPos_Duration = 20; const int tkhdPos_Layer = 32; const int tkhdPos_AlternateGroup = 34; const int tkhdPos_Volume = 36; const int tkhdPos_a = 40; const int tkhdPos_b = 44; const int tkhdPos_u = 48; const int tkhdPos_c = 52; const int tkhdPos_d = 56; const int tkhdPos_v = 60; const int tkhdPos_x = 64; const int tkhdPos_y = 68; const int tkhdPos_w = 72; const int tkhdPos_TrackWidth = 76; const int tkhdPos_TrackHeight = 80; const int tkhdPosV1_CreationTime = 4; const int tkhdPosV1_ModificationTime = 12; const int tkhdPosV1_TrackID = 20; const int tkhdPosV1_Duration = 28; const int tkhdPosV1_Layer = 44; const int tkhdPosV1_AlternateGroup = 34 + 12; const int tkhdPosV1_Volume = 36 + 12; const int tkhdPosV1_a = 40 + 12; const int tkhdPosV1_b = 44 + 12; const int tkhdPosV1_u = 48 + 12; const int tkhdPosV1_c = 52 + 12; const int tkhdPosV1_d = 56 + 12; const int tkhdPosV1_v = 60 + 12; const int tkhdPosV1_x = 64 + 12; const int tkhdPosV1_y = 68 + 12; const int tkhdPosV1_w = 72 + 12; const int tkhdPosV1_TrackWidth = 76 + 12; const int tkhdPosV1_TrackHeight = 80 + 12; // ------------------------------------- // Macros // #define DEBUG_PRINT(s) if(fDebug) qtss_printf s #define DEEP_DEBUG_PRINT(s) if(fDeepDebug) qtss_printf s // ------------------------------------- // Constructors and destructors // QTAtom_tkhd::QTAtom_tkhd(QTFile * File, QTFile::AtomTOCEntry * TOCEntry, Bool16 Debug, Bool16 DeepDebug) : QTAtom(File, TOCEntry, Debug, DeepDebug) { } QTAtom_tkhd::~QTAtom_tkhd(void) { } // ------------------------------------- // Initialization functions // Bool16 QTAtom_tkhd::Initialize(void) { // Temporary vars UInt32 tempInt32; // // Parse this atom's fields. ReadInt32(tkhdPos_VersionFlags, &tempInt32); fVersion = (UInt8)((tempInt32 >> 24) & 0x000000ff); fFlags = tempInt32 & 0x00ffffff; if (0 == fVersion) { // Verify that this atom is the correct length. if( fTOCEntry.AtomDataLength != 84 ) { DEEP_DEBUG_PRINT(("QTAtom_tkhd::Initialize failed. Expected AtomDataLength == 84 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength)); return false; } ReadInt32To64(tkhdPos_CreationTime, &fCreationTime); ReadInt32To64(tkhdPos_ModificationTime, &fModificationTime); ReadInt32(tkhdPos_TrackID, &fTrackID); ReadInt32To64(tkhdPos_Duration, &fDuration); ReadInt16(tkhdPos_AlternateGroup, &fAlternateGroup); ReadInt16(tkhdPos_Volume, &fVolume); ReadInt32(tkhdPos_a, &fa); ReadInt32(tkhdPos_b, &fb); ReadInt32(tkhdPos_u, &fu); ReadInt32(tkhdPos_c, &fc); ReadInt32(tkhdPos_d, &fd); ReadInt32(tkhdPos_v, &fv); ReadInt32(tkhdPos_x, &fx); ReadInt32(tkhdPos_y, &fy); ReadInt32(tkhdPos_w, &fw); ReadInt32(tkhdPos_TrackWidth, &fTrackWidth); ReadInt32(tkhdPos_TrackHeight, &fTrackHeight); } else if (1 == fVersion) { // Verify that this atom is the correct length. if (fTOCEntry.AtomDataLength != 96) { DEEP_DEBUG_PRINT(("QTAtom_tkhd::Initialize failed. Expected AtomDataLength == 96 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength)); return false; } ReadInt64(tkhdPosV1_CreationTime, &fCreationTime); ReadInt64(tkhdPosV1_ModificationTime, &fModificationTime); ReadInt32(tkhdPosV1_TrackID, &fTrackID); ReadInt64(tkhdPosV1_Duration, &fDuration); ReadInt16(tkhdPosV1_AlternateGroup, &fAlternateGroup); ReadInt16(tkhdPosV1_Volume, &fVolume); ReadInt32(tkhdPosV1_a, &fa); ReadInt32(tkhdPosV1_b, &fb); ReadInt32(tkhdPosV1_u, &fu); ReadInt32(tkhdPosV1_c, &fc); ReadInt32(tkhdPosV1_d, &fd); ReadInt32(tkhdPosV1_v, &fv); ReadInt32(tkhdPosV1_x, &fx); ReadInt32(tkhdPosV1_y, &fy); ReadInt32(tkhdPosV1_w, &fw); ReadInt32(tkhdPosV1_TrackWidth, &fTrackWidth); ReadInt32(tkhdPosV1_TrackHeight, &fTrackHeight); } else { DEEP_DEBUG_PRINT(("QTAtom_tkhd::Initialize failed. Version unsupported: %d",fVersion)); return false; } // // This atom has been successfully read in. return true; } // ------------------------------------- // Debugging functions // void QTAtom_tkhd::DumpAtom(void) { // Temporary vars time_t unixCreationTime = (time_t)fCreationTime + (time_t)QT_TIME_TO_LOCAL_TIME; char buffer[kTimeStrSize]; struct tm timeResult; DEBUG_PRINT(("QTAtom_tkhd::DumpAtom - Dumping atom.\n")); DEBUG_PRINT(("QTAtom_tkhd::DumpAtom - ..Version: %d.\n", (int) fVersion)); DEBUG_PRINT(("QTAtom_tkhd::DumpAtom - ..Track ID: %"_S32BITARG_"\n", fTrackID)); DEBUG_PRINT(("QTAtom_tkhd::DumpAtom - ..Flags:%s%s%s%s\n", (fFlags & flagEnabled) ? " Enabled" : "", (fFlags & flagInMovie) ? " InMovie" : "", (fFlags & flagInPreview) ? " InPreview" : "", (fFlags & flagInPoster) ? " InPoster" : "")); DEBUG_PRINT(("QTAtom_tkhd::DumpAtom - ..Creation date: %s", qtss_asctime(qtss_gmtime(&unixCreationTime, &timeResult),buffer,sizeof(buffer)))); }