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