/* * * @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@ * */ // // QTAtom_mvhd: // The 'mvhd' QTAtom class. // ------------------------------------- // Includes // #include #include #include "QTFile.h" #include "QTAtom.h" #include "QTAtom_mvhd.h" // ------------------------------------- // Constants // const int mvhdPos_VersionFlags = 0; const int mvhdPos_CreationTime = 4; const int mvhdPos_ModificationTime = 8; const int mvhdPos_TimeScale = 12; const int mvhdPos_Duration = 16; const int mvhdPos_PreferredRate = 20; const int mvhdPos_PreferredVolume = 24; const int mvhdPos_a = 36; const int mvhdPos_b = 40; const int mvhdPos_u = 44; const int mvhdPos_c = 48; const int mvhdPos_d = 52; const int mvhdPos_v = 56; const int mvhdPos_x = 60; const int mvhdPos_y = 64; const int mvhdPos_w = 68; const int mvhdPos_PreviewTime = 72; const int mvhdPos_PreviewDuration = 76; const int mvhdPos_PosterTime = 80; const int mvhdPos_SelectionTime = 84; const int mvhdPos_SelectionDuration = 88; const int mvhdPos_CurrentTime = 92; const int mvhdPos_NextTrackID = 96; const int mvhdPosV1_CreationTime = 4; //+4 bytes const int mvhdPosV1_ModificationTime = 12; //+4 bytes const int mvhdPosV1_TimeScale = 20; const int mvhdPosV1_Duration = 24; //+4 bytes const int mvhdPosV1_PreferredRate = 20 + 12; const int mvhdPosV1_PreferredVolume = 24 + 12; const int mvhdPosV1_a = 36 + 12; const int mvhdPosV1_b = 40 + 12; const int mvhdPosV1_u = 44 + 12; const int mvhdPosV1_c = 48 + 12; const int mvhdPosV1_d = 52 + 12; const int mvhdPosV1_v = 56 + 12; const int mvhdPosV1_x = 60 + 12; const int mvhdPosV1_y = 64 + 12; const int mvhdPosV1_w = 68 + 12; const int mvhdPosV1_PreviewTime = 72 + 12; const int mvhdPosV1_PreviewDuration = 76 + 12; const int mvhdPosV1_PosterTime = 80 + 12; const int mvhdPosV1_SelectionTime = 84 + 12; const int mvhdPosV1_SelectionDuration = 88 + 12; const int mvhdPosV1_CurrentTime = 92 + 12; const int mvhdPosV1_NextTrackID = 96 + 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_mvhd::QTAtom_mvhd(QTFile * File, QTFile::AtomTOCEntry * TOCEntry, Bool16 Debug, Bool16 DeepDebug) : QTAtom(File, TOCEntry, Debug, DeepDebug) { } QTAtom_mvhd::~QTAtom_mvhd(void) { } // ------------------------------------- // Initialization functions // Bool16 QTAtom_mvhd::Initialize(void) { // Temporary vars UInt32 tempInt32; // // Parse this atom's fields. ReadInt32(mvhdPos_VersionFlags, &tempInt32); fVersion = (UInt8)((tempInt32 >> 24) & 0x000000ff); fFlags = tempInt32 & 0x00ffffff; if (0 == fVersion) { // Verify that this atom is the correct length. if( fTOCEntry.AtomDataLength != 100 ) { DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Expected AtomDataLength == 100 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength)); return false; } ReadInt32To64(mvhdPos_CreationTime, &fCreationTime); ReadInt32To64(mvhdPos_ModificationTime, &fModificationTime); ReadInt32(mvhdPos_TimeScale, &fTimeScale); ReadInt32To64(mvhdPos_Duration, &fDuration); ReadInt32(mvhdPos_PreferredRate, &fPreferredRate); ReadInt16(mvhdPos_PreferredVolume, &fPreferredVolume); ReadInt32(mvhdPos_a, &fa); ReadInt32(mvhdPos_b, &fb); ReadInt32(mvhdPos_u, &fu); ReadInt32(mvhdPos_c, &fc); ReadInt32(mvhdPos_d, &fd); ReadInt32(mvhdPos_v, &fv); ReadInt32(mvhdPos_x, &fx); ReadInt32(mvhdPos_y, &fy); ReadInt32(mvhdPos_w, &fw); ReadInt32(mvhdPos_PreviewTime, &fPreviewTime); ReadInt32(mvhdPos_PreviewDuration, &fPreviewDuration); ReadInt32(mvhdPos_PosterTime, &fPosterTime); ReadInt32(mvhdPos_SelectionTime, &fSelectionTime); ReadInt32(mvhdPos_SelectionDuration, &fSelectionDuration); ReadInt32(mvhdPos_CurrentTime, &fCurrentTime); ReadInt32(mvhdPos_NextTrackID, &fNextTrackID); } else if (1 == fVersion) { // Verify that this atom is the correct length. if( fTOCEntry.AtomDataLength != 112 ) { DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Expected AtomDataLength = 112 version: %d AtomDataLength: %"_64BITARG_"u\n",fVersion, fTOCEntry.AtomDataLength)); return false; } ReadInt64(mvhdPosV1_CreationTime, &fCreationTime); ReadInt64(mvhdPosV1_ModificationTime, &fModificationTime); ReadInt32(mvhdPosV1_TimeScale, &fTimeScale); ReadInt64(mvhdPosV1_Duration, &fDuration); ReadInt32(mvhdPosV1_PreferredRate, &fPreferredRate); ReadInt16(mvhdPosV1_PreferredVolume, &fPreferredVolume); ReadInt32(mvhdPosV1_a, &fa); ReadInt32(mvhdPosV1_b, &fb); ReadInt32(mvhdPosV1_u, &fu); ReadInt32(mvhdPosV1_c, &fc); ReadInt32(mvhdPosV1_d, &fd); ReadInt32(mvhdPosV1_v, &fv); ReadInt32(mvhdPosV1_x, &fx); ReadInt32(mvhdPosV1_y, &fy); ReadInt32(mvhdPosV1_w, &fw); ReadInt32(mvhdPosV1_PreviewTime, &fPreviewTime); ReadInt32(mvhdPosV1_PreviewDuration, &fPreviewDuration); ReadInt32(mvhdPosV1_PosterTime, &fPosterTime); ReadInt32(mvhdPosV1_SelectionTime, &fSelectionTime); ReadInt32(mvhdPosV1_SelectionDuration, &fSelectionDuration); ReadInt32(mvhdPosV1_CurrentTime, &fCurrentTime); ReadInt32(mvhdPosV1_NextTrackID, &fNextTrackID); } else { DEEP_DEBUG_PRINT(("QTAtom_mvhd::Initialize failed. Version unsupported: %d\n",fVersion)); return false; } // // This atom has been successfully read in. return true; } // ------------------------------------- // Debugging functions // void QTAtom_mvhd::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_mvhd::DumpAtom - Dumping atom.\n")); DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Version: %d.\n", (int) fVersion)); DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Creation date: %s", qtss_asctime(qtss_gmtime(&unixCreationTime, &timeResult),buffer,sizeof(buffer)))); DEBUG_PRINT(("QTAtom_mvhd::DumpAtom - ..Movie duration: %.2f seconds\n", GetDurationInSeconds())); }