229 lines
8.1 KiB
C++
229 lines
8.1 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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//
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// QTAtom_mvhd:
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// The 'mvhd' 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_mvhd.h"
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// -------------------------------------
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// Constants
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//
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const int mvhdPos_VersionFlags = 0;
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const int mvhdPos_CreationTime = 4;
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const int mvhdPos_ModificationTime = 8;
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const int mvhdPos_TimeScale = 12;
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const int mvhdPos_Duration = 16;
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const int mvhdPos_PreferredRate = 20;
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const int mvhdPos_PreferredVolume = 24;
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const int mvhdPos_a = 36;
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const int mvhdPos_b = 40;
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const int mvhdPos_u = 44;
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const int mvhdPos_c = 48;
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const int mvhdPos_d = 52;
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const int mvhdPos_v = 56;
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const int mvhdPos_x = 60;
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const int mvhdPos_y = 64;
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const int mvhdPos_w = 68;
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const int mvhdPos_PreviewTime = 72;
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const int mvhdPos_PreviewDuration = 76;
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const int mvhdPos_PosterTime = 80;
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const int mvhdPos_SelectionTime = 84;
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const int mvhdPos_SelectionDuration = 88;
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const int mvhdPos_CurrentTime = 92;
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const int mvhdPos_NextTrackID = 96;
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const int mvhdPosV1_CreationTime = 4; //+4 bytes
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const int mvhdPosV1_ModificationTime = 12; //+4 bytes
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const int mvhdPosV1_TimeScale = 20;
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const int mvhdPosV1_Duration = 24; //+4 bytes
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const int mvhdPosV1_PreferredRate = 20 + 12;
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const int mvhdPosV1_PreferredVolume = 24 + 12;
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const int mvhdPosV1_a = 36 + 12;
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const int mvhdPosV1_b = 40 + 12;
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const int mvhdPosV1_u = 44 + 12;
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const int mvhdPosV1_c = 48 + 12;
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const int mvhdPosV1_d = 52 + 12;
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const int mvhdPosV1_v = 56 + 12;
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const int mvhdPosV1_x = 60 + 12;
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const int mvhdPosV1_y = 64 + 12;
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const int mvhdPosV1_w = 68 + 12;
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const int mvhdPosV1_PreviewTime = 72 + 12;
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const int mvhdPosV1_PreviewDuration = 76 + 12;
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const int mvhdPosV1_PosterTime = 80 + 12;
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const int mvhdPosV1_SelectionTime = 84 + 12;
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const int mvhdPosV1_SelectionDuration = 88 + 12;
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const int mvhdPosV1_CurrentTime = 92 + 12;
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const int mvhdPosV1_NextTrackID = 96 + 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_mvhd::QTAtom_mvhd(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_mvhd::~QTAtom_mvhd(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_mvhd::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(mvhdPos_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 != 100 )
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{
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DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Expected AtomDataLength == 100 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength));
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return false;
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}
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ReadInt32To64(mvhdPos_CreationTime, &fCreationTime);
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ReadInt32To64(mvhdPos_ModificationTime, &fModificationTime);
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ReadInt32(mvhdPos_TimeScale, &fTimeScale);
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ReadInt32To64(mvhdPos_Duration, &fDuration);
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ReadInt32(mvhdPos_PreferredRate, &fPreferredRate);
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ReadInt16(mvhdPos_PreferredVolume, &fPreferredVolume);
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ReadInt32(mvhdPos_a, &fa);
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ReadInt32(mvhdPos_b, &fb);
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ReadInt32(mvhdPos_u, &fu);
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ReadInt32(mvhdPos_c, &fc);
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ReadInt32(mvhdPos_d, &fd);
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ReadInt32(mvhdPos_v, &fv);
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ReadInt32(mvhdPos_x, &fx);
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ReadInt32(mvhdPos_y, &fy);
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ReadInt32(mvhdPos_w, &fw);
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ReadInt32(mvhdPos_PreviewTime, &fPreviewTime);
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ReadInt32(mvhdPos_PreviewDuration, &fPreviewDuration);
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ReadInt32(mvhdPos_PosterTime, &fPosterTime);
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ReadInt32(mvhdPos_SelectionTime, &fSelectionTime);
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ReadInt32(mvhdPos_SelectionDuration, &fSelectionDuration);
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ReadInt32(mvhdPos_CurrentTime, &fCurrentTime);
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ReadInt32(mvhdPos_NextTrackID, &fNextTrackID);
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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 != 112 )
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{
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DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Expected AtomDataLength = 112 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength));
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return false;
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}
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ReadInt64(mvhdPosV1_CreationTime, &fCreationTime);
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ReadInt64(mvhdPosV1_ModificationTime, &fModificationTime);
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ReadInt32(mvhdPosV1_TimeScale, &fTimeScale);
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ReadInt64(mvhdPosV1_Duration, &fDuration);
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ReadInt32(mvhdPosV1_PreferredRate, &fPreferredRate);
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ReadInt16(mvhdPosV1_PreferredVolume, &fPreferredVolume);
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ReadInt32(mvhdPosV1_a, &fa);
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ReadInt32(mvhdPosV1_b, &fb);
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ReadInt32(mvhdPosV1_u, &fu);
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ReadInt32(mvhdPosV1_c, &fc);
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ReadInt32(mvhdPosV1_d, &fd);
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ReadInt32(mvhdPosV1_v, &fv);
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ReadInt32(mvhdPosV1_x, &fx);
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ReadInt32(mvhdPosV1_y, &fy);
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ReadInt32(mvhdPosV1_w, &fw);
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ReadInt32(mvhdPosV1_PreviewTime, &fPreviewTime);
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ReadInt32(mvhdPosV1_PreviewDuration, &fPreviewDuration);
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ReadInt32(mvhdPosV1_PosterTime, &fPosterTime);
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ReadInt32(mvhdPosV1_SelectionTime, &fSelectionTime);
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ReadInt32(mvhdPosV1_SelectionDuration, &fSelectionDuration);
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ReadInt32(mvhdPosV1_CurrentTime, &fCurrentTime);
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ReadInt32(mvhdPosV1_NextTrackID, &fNextTrackID);
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}
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else
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{
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DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Version unsupported: %d\n",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_mvhd::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_mvhd::DumpAtom - Dumping atom.\n"));
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DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Version: %d.\n", (int) fVersion));
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DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Creation date: %s", qtss_asctime(qtss_gmtime(&unixCreationTime, &timeResult),buffer,sizeof(buffer))));
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DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Movie duration: %.2f seconds\n", GetDurationInSeconds()));
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}
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