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Add even more of the source

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This should be about everything needed to build so far?
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Darren VanBuren 2017-03-07 17:14:16 -08:00
parent af3619d4fa
commit 849723c9cf
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QTFileLib/QTAtom_stts.cpp Normal file
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/*
*
* @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_stts.cpp,v 1.2 2006/03/29 00:47:00 murata Exp $
//
// QTAtom_stts:
// The 'stts' QTAtom class.
// -------------------------------------
// Includes
//
#include <stdio.h>
#include <stdlib.h>
#include "SafeStdLib.h"
#include <string.h>
#ifndef __Win32__
#include <sys/types.h>
#include <netinet/in.h>
#endif
#include "QTFile.h"
#include "QTAtom.h"
#include "QTAtom_stts.h"
#include "OSMemory.h"
// -------------------------------------
// Constants
//
const int sttsPos_VersionFlags = 0;
const int sttsPos_NumEntries = 4;
const int sttsPos_SampleTable = 8;
// -------------------------------------
// Macros
//
#define DEBUG_PRINT(s) if(fDebug) qtss_printf s
#define DEEP_DEBUG_PRINT(s) if(fDeepDebug) qtss_printf s
// -------------------------------------
// Class state cookie
//
QTAtom_stts_SampleTableControlBlock::QTAtom_stts_SampleTableControlBlock(void)
{
Reset();
}
QTAtom_stts_SampleTableControlBlock::~QTAtom_stts_SampleTableControlBlock(void)
{
}
void QTAtom_stts_SampleTableControlBlock::Reset(void)
{
fMTtSN_CurEntry = 0;
fMTtSN_CurMediaTime = 0;
fMTtSN_CurSample = 1;
fSNtMT_CurEntry = 0;
fSNtMT_CurMediaTime = 0;
fSNtMT_CurSample = 1;
fGetSampleMediaTime_SampleNumber = 0;
fGetSampleMediaTime_MediaTime = 0;
}
// -------------------------------------
// Constructors and destructors
//
QTAtom_stts::QTAtom_stts(QTFile * File, QTFile::AtomTOCEntry * TOCEntry, Bool16 Debug, Bool16 DeepDebug)
: QTAtom(File, TOCEntry, Debug, DeepDebug),
fNumEntries(0), fTimeToSampleTable(NULL), fTableSize(0)
{
}
QTAtom_stts::~QTAtom_stts(void)
{
//
// Free our variables.
#if MMAP_TABLES
if( fTimeToSampleTable != NULL )
this->UnMap(fTimeToSampleTable, fTableSize);
#else
if( fTimeToSampleTable != NULL )
delete[] fTimeToSampleTable;
#endif
}
// -------------------------------------
// Initialization functions
//
Bool16 QTAtom_stts::Initialize(void)
{
// Temporary vars
UInt32 tempInt32;
//
// Parse this atom's fields.
ReadInt32(sttsPos_VersionFlags, &tempInt32);
fVersion = (UInt8)((tempInt32 >> 24) & 0x000000ff);
fFlags = tempInt32 & 0x00ffffff;
ReadInt32(sttsPos_NumEntries, &fNumEntries);
//
// Validate the size of the sample table.
if( (UInt32)(fNumEntries * 8) != (fTOCEntry.AtomDataLength - 8) )
return false;
//
// Read in the time-to-sample table.
#if MMAP_TABLES
fTableSize = (fNumEntries * 8);
fTimeToSampleTable = this->MemMap(sttsPos_SampleTable, fTableSize);
if( fTimeToSampleTable == NULL )
return false;
#else
fTimeToSampleTable = NEW char[fNumEntries * 8];
if( fTimeToSampleTable == NULL )
return false;
ReadBytes(sttsPos_SampleTable, fTimeToSampleTable, fNumEntries * 8);
#endif
//
// This atom has been successfully read in.
return true;
}
// -------------------------------------
// Accessors
//
Bool16 QTAtom_stts::MediaTimeToSampleNumber(UInt32 MediaTime, UInt32 * SampleNumber, QTAtom_stts_SampleTableControlBlock * STCB)
{
// General vars
UInt32 SampleCount, SampleDuration;
QTAtom_stts_SampleTableControlBlock *tempSTCB = NULL;
Bool16 result = false;
//
// Use the default STCB if one was not passed in to us.
if( STCB == NULL )
{
// qtss_printf("QTAtom_stts::MediaTimeToSampleNumber ( STCB == NULL ) \n");
tempSTCB = NEW QTAtom_stts_SampleTableControlBlock;
STCB = tempSTCB;
}
//
// Reconfigure the STCB if necessary.
if( MediaTime < STCB->fMTtSN_CurMediaTime )
{
// qtss_printf(" QTAtom_stts::MediaTimeToSampleNumber RESET \n");
STCB->Reset();
}
//
// Linearly search through the sample table until we find the sample
// which fits inside the given media time.
for( ; STCB->fMTtSN_CurEntry < fNumEntries; STCB->fMTtSN_CurEntry++ ) {
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (STCB->fMTtSN_CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleDuration, fTimeToSampleTable + (STCB->fMTtSN_CurEntry * 8) + 4, 4);
SampleDuration = ntohl(SampleDuration);
//
// Can we skip over this entry?
if( STCB->fMTtSN_CurMediaTime + (SampleCount * SampleDuration) < MediaTime ) {
STCB->fMTtSN_CurMediaTime += SampleCount * SampleDuration;
STCB->fMTtSN_CurSample += SampleCount;
continue;
}
//
// Locate and return the sample which is/begins right before the
// given media time.
if( SampleNumber != NULL )
{
*SampleNumber = STCB->fMTtSN_CurSample;
if (SampleDuration > 0)
*SampleNumber += (MediaTime - STCB->fMTtSN_CurMediaTime) / SampleDuration;
result = true;
break;
}
}
delete tempSTCB;
return result;
}
Bool16 QTAtom_stts::SampleNumberToMediaTime(UInt32 SampleNumber, UInt32 * MediaTime, QTAtom_stts_SampleTableControlBlock * STCB)
{
// General vars
UInt32 SampleCount, SampleDuration;
//
// Use the default STCB if one was not passed in to us.
Assert(STCB != NULL);
if ( STCB->fGetSampleMediaTime_SampleNumber == SampleNumber)
{
// qtss_printf("QTTrack::GetSampleMediaTime cache hit SampleNumber %"_S32BITARG_" \n", SampleNumber);
*MediaTime = STCB->fGetSampleMediaTime_MediaTime;
return true;
}
//
// Reconfigure the STCB if necessary.
if( SampleNumber < STCB->fSNtMT_CurSample )
{
// qtss_printf(" QTAtom_stts::SampleNumberToMediaTime reset \n");
STCB->Reset();
}
//
// Linearly search through the sample table until we find the sample
// which fits inside the given media time.
for( ; STCB->fSNtMT_CurEntry < fNumEntries; STCB->fSNtMT_CurEntry++ ) {
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (STCB->fSNtMT_CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleDuration, fTimeToSampleTable + (STCB->fSNtMT_CurEntry * 8) + 4, 4);
SampleDuration = ntohl(SampleDuration);
//
// Can we skip over this entry?
if( STCB->fSNtMT_CurSample + SampleCount < SampleNumber ) {
STCB->fSNtMT_CurMediaTime += SampleCount * SampleDuration;
STCB->fSNtMT_CurSample += SampleCount;
continue;
}
//
// Return the sample time at the beginning of this sample.
if( MediaTime != NULL )
*MediaTime = STCB->fSNtMT_CurMediaTime + ((SampleNumber - STCB->fSNtMT_CurSample) * SampleDuration);
STCB->fGetSampleMediaTime_SampleNumber = SampleNumber;
STCB->fGetSampleMediaTime_MediaTime = *MediaTime;
return true;
}
//
// No match; return false.
return false;
}
// -------------------------------------
// Debugging functions
//
void QTAtom_stts::DumpAtom(void)
{
DEBUG_PRINT(("QTAtom_stts::DumpAtom - Dumping atom.\n"));
DEBUG_PRINT(("QTAtom_stts::DumpAtom - ..Number of TTS entries: %"_S32BITARG_"\n", fNumEntries));
}
void QTAtom_stts::DumpTable(void)
{
//
// Print out a header.
qtss_printf("-- Time To Sample table -----------------------------------------------------------\n");
qtss_printf("\n");
qtss_printf(" Entry Num. Sample Count Sample Duration\n");
qtss_printf(" ---------- ------------ ---------------\n");
//
// Print the table.
UInt32 SampleCount = 0;
UInt32 SampleDuration = 0;
for( UInt32 CurEntry = 0; CurEntry < fNumEntries; CurEntry++ )
{
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleDuration, fTimeToSampleTable + (CurEntry* 8) + 4, 4);
SampleDuration = ntohl(SampleDuration);
// Print out a listing.
qtss_printf(" %10"_U32BITARG_" : %10"_U32BITARG_" %10"_U32BITARG_"\n", CurEntry, SampleCount, SampleDuration);
}
}
// -------------------------------------
// Constants
//
const int cttsPos_VersionFlags = 0;
const int cttsPos_NumEntries = 4;
const int cttsPos_SampleTable = 8;
// -------------------------------------
// Macros
//
#define DEBUG_PRINT(s) if(fDebug) qtss_printf s
#define DEEP_DEBUG_PRINT(s) if(fDeepDebug) qtss_printf s
// -------------------------------------
// Class state cookie
//
QTAtom_ctts_SampleTableControlBlock::QTAtom_ctts_SampleTableControlBlock(void)
{
Reset();
}
QTAtom_ctts_SampleTableControlBlock::~QTAtom_ctts_SampleTableControlBlock(void)
{
}
void QTAtom_ctts_SampleTableControlBlock::Reset(void)
{
fMTtSN_CurEntry = 0;
fMTtSN_CurMediaTime = 0;
fMTtSN_CurSample = 1;
fSNtMT_CurEntry = 0;
fSNtMT_CurMediaTime = 0;
fSNtMT_CurSample = 1;
fGetSampleMediaTime_SampleNumber = 0;
fGetSampleMediaTime_MediaTime = 0;
}
// -------------------------------------
// Constructors and destructors
//
QTAtom_ctts::QTAtom_ctts(QTFile * File, QTFile::AtomTOCEntry * TOCEntry, Bool16 Debug, Bool16 DeepDebug)
: QTAtom(File, TOCEntry, Debug, DeepDebug),
fNumEntries(0), fTimeToSampleTable(NULL)
{
}
QTAtom_ctts::~QTAtom_ctts(void)
{
//
// Free our variables.
if( fTimeToSampleTable != NULL )
delete[] fTimeToSampleTable;
}
// -------------------------------------
// Initialization functions
//
Bool16 QTAtom_ctts::Initialize(void)
{
// Temporary vars
UInt32 tempInt32;
//
// Parse this atom's fields.
ReadInt32(cttsPos_VersionFlags, &tempInt32);
fVersion = (UInt8)((tempInt32 >> 24) & 0x000000ff);
fFlags = tempInt32 & 0x00ffffff;
ReadInt32(cttsPos_NumEntries, &fNumEntries);
//
// Validate the size of the sample table.
if( (UInt32)(fNumEntries * 8) != (fTOCEntry.AtomDataLength - 8) )
return false;
//
// Read in the time-to-sample table.
fTimeToSampleTable = NEW char[fNumEntries * 8];
if( fTimeToSampleTable == NULL )
return false;
ReadBytes(cttsPos_SampleTable, fTimeToSampleTable, fNumEntries * 8);
//
// This atom has been successfully read in.
return true;
}
// -------------------------------------
// Accessors
//
Bool16 QTAtom_ctts::MediaTimeToSampleNumber(UInt32 MediaTime, UInt32 * SampleNumber, QTAtom_ctts_SampleTableControlBlock * STCB)
{
// General vars
UInt32 SampleCount, SampleDuration;
QTAtom_ctts_SampleTableControlBlock *tempSTCB = NULL;
Bool16 result = false;
//
// Use the default STCB if one was not passed in to us.
if( STCB == NULL )
{
// qtss_printf("QTAtom_ctts::MediaTimeToSampleNumber ( STCB == NULL ) \n");
tempSTCB = NEW QTAtom_ctts_SampleTableControlBlock;
STCB = tempSTCB;
}
//
// Reconfigure the STCB if necessary.
if( MediaTime < STCB->fMTtSN_CurMediaTime )
{
// qtss_printf(" QTAtom_ctts::MediaTimeToSampleNumber RESET \n");
STCB->Reset();
}
//
// Linearly search through the sample table until we find the sample
// which fits inside the given media time.
for( ; STCB->fMTtSN_CurEntry < fNumEntries; STCB->fMTtSN_CurEntry++ ) {
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (STCB->fMTtSN_CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleDuration, fTimeToSampleTable + (STCB->fMTtSN_CurEntry * 8) + 4, 4);
SampleDuration = ntohl(SampleDuration);
//
// Can we skip over this entry?
if( STCB->fMTtSN_CurMediaTime + (SampleCount * SampleDuration) < MediaTime ) {
STCB->fMTtSN_CurMediaTime += SampleCount * SampleDuration;
STCB->fMTtSN_CurSample += SampleCount;
continue;
}
//
// Locate and return the sample which is/begins right before the
// given media time.
if( SampleNumber != NULL )
{
*SampleNumber = STCB->fMTtSN_CurSample;
if (SampleDuration > 0)
*SampleNumber += (MediaTime - STCB->fMTtSN_CurMediaTime) / SampleDuration;
result = true;
break;
}
}
delete tempSTCB;
return result;
}
Bool16 QTAtom_ctts::SampleNumberToMediaTimeOffset(UInt32 SampleNumber, UInt32 * MediaTimeOffset, QTAtom_ctts_SampleTableControlBlock * STCB)
{
// General vars
UInt32 SampleCount, SampleOffset;
//
// Use the default STCB if one was not passed in to us.
Assert(STCB != NULL);
if ( STCB->fGetSampleMediaTime_SampleNumber == SampleNumber)
{
// qtss_printf("QTTrack::GetSampleMediaTime cache hit SampleNumber %"_S32BITARG_" \n", SampleNumber);
*MediaTimeOffset = STCB->fGetSampleMediaTime_MediaTime;
return true;
}
//
// Reconfigure the STCB if necessary.
if( SampleNumber < STCB->fSNtMT_CurSample )
{
// qtss_printf(" QTAtom_ctts::SampleNumberToMediaTime reset \n");
STCB->Reset();
}
//
// Linearly search through the sample table until we find the sample
// which fits inside the given media time.
for( ; STCB->fSNtMT_CurEntry < fNumEntries; STCB->fSNtMT_CurEntry++ ) {
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (STCB->fSNtMT_CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleOffset, fTimeToSampleTable + (STCB->fSNtMT_CurEntry * 8) + 4, 4);
SampleOffset = ntohl(SampleOffset);
//
// Can we skip over this entry?
if( STCB->fSNtMT_CurSample + SampleCount < SampleNumber ) {
STCB->fSNtMT_CurMediaTime += SampleCount * SampleOffset;
STCB->fSNtMT_CurSample += SampleCount;
continue;
}
//
// Return the sample time at the beginning of this sample.
if( MediaTimeOffset != NULL )
*MediaTimeOffset = SampleOffset;
STCB->fGetSampleMediaTime_SampleNumber = SampleNumber;
STCB->fGetSampleMediaTime_MediaTime = *MediaTimeOffset;
return true;
}
//
// No match; return false.
return false;
}
// -------------------------------------
// Debugging functions
//
void QTAtom_ctts::DumpAtom(void)
{
DEBUG_PRINT(("QTAtom_ctts::DumpAtom - Dumping atom.\n"));
DEBUG_PRINT(("QTAtom_ctts::DumpAtom - ..Number of CTTS entries: %"_S32BITARG_"\n", fNumEntries));
}
void QTAtom_ctts::DumpTable(void)
{
//
// Print out a header.
qtss_printf("-- Composition Time To Sample table ----------------------------------------------\n");
qtss_printf("\n");
qtss_printf(" Entry Num. Sample Count Sample Offset\n");
qtss_printf(" ---------- ------------ ---------------\n");
//
// Print the table.
UInt32 SampleCount = 0;
UInt32 SampleOffset = 0;
for( UInt32 CurEntry = 0; CurEntry < fNumEntries; CurEntry++ )
{
//
// Copy this sample count and duration.
memcpy(&SampleCount, fTimeToSampleTable + (CurEntry * 8), 4);
SampleCount = ntohl(SampleCount);
memcpy(&SampleOffset, fTimeToSampleTable + (CurEntry* 8) + 4, 4);
SampleOffset = ntohl(SampleOffset);
// Print out a listing.
qtss_printf(" %10"_U32BITARG_" : %10"_U32BITARG_" %10"_U32BITARG_"\n", CurEntry, SampleCount, SampleOffset);
}
}