C700/PlayerCodeReader.cpp at master · osoumen/C700 · GitHub

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//
// PlayerCodeReader.cpp
// C700
//
// Created by osoumen on 2017/02/26.
//
//

#include"PlayerCodeReader.h"

#defineCHUNKID(a, b, c, d) \
((((int)a) << 0) | (((int)b) << 8) | (((int)c) << 16) | (((int)d) << 24))

PlayerCodeReader::PlayerCodeReader(constvoid *data, int dataSize, bool copy)
: ChunkReader(data, dataSize, copy)
, m_pSmcNativeVector(NULL)
, m_pSmcEmulationVector(NULL)
, m_pSmcPlayerCode(NULL)
, mSmcPlayerCodeSize(0)
, m_pSpcPlayerCode(NULL)
, mSpcPlayerCodeSize(0)
{
Load();
}

PlayerCodeReader::PlayerCodeReader(constchar *path)
: ChunkReader(path)
, m_pSmcNativeVector(NULL)
, m_pSmcEmulationVector(NULL)
, m_pSmcPlayerCode(NULL)
, mSmcPlayerCodeSize(0)
, m_pSpcPlayerCode(NULL)
, mSpcPlayerCodeSize(0)
{
Load();
}

PlayerCodeReader::~PlayerCodeReader()
{
if (m_pSmcNativeVector != NULL) {
delete m_pSmcNativeVector;
 }
if (m_pSmcEmulationVector != NULL) {
delete m_pSmcEmulationVector;
 }
if (m_pSmcPlayerCode != NULL) {
delete m_pSmcPlayerCode;
 }
if (m_pSpcPlayerCode != NULL) {
delete m_pSpcPlayerCode;
 }
}

boolPlayerCodeReader::Load()
{
// 必ず先頭にあるべきheadチャンクを確認する
int ckType;
long	ckSize;
readChunkHead(&ckType, &ckSize);
if (ckType != CHUNKID('h','e','a','d') ) {
returnfalse;
 }
if (ckSize < 16) {
returnfalse;
 }
char headerStr[17];
readData(headerStr, 16, &ckSize);
if (strncmp(headerStr, "ppse song player", 16) != 0) {
returnfalse;
 }

int checkFlag = 0; // 必要なチャンクが全てあれば0x1fになる

while ( (mDataSize - mDataPos) > (int)sizeof( MyChunkHead ) ) {
readChunkHead(&ckType, &ckSize);
 ckSize &= 0x7fff; // 現状wla-dxの方で0x8000 で出力されてしまうため
switch (ckType) {
caseCHUNKID('v','e','r','s'):
readData(&mVersion, ckSize, &ckSize);
 checkFlag |= 0x01;
break;
caseCHUNKID('s','p','c','p'):
 m_pSpcPlayerCode = newchar[ckSize];
readData(m_pSpcPlayerCode, ckSize, &ckSize);
mSpcPlayerCodeSize = ckSize;
 checkFlag |= 0x02;
break;
caseCHUNKID('e','m','u','v'):
 m_pSmcEmulationVector = newchar[ckSize];
readData(m_pSmcEmulationVector, ckSize, &ckSize);
if (ckSize == 12) checkFlag |= 0x04;
break;
caseCHUNKID('n','t','v','v'):
 m_pSmcNativeVector = newchar[ckSize];
readData(m_pSmcNativeVector, ckSize, &ckSize);
if (ckSize == 12) checkFlag |= 0x08;
break;
caseCHUNKID('s','m','c','p'):
 m_pSmcPlayerCode = newchar[ckSize];
readData(m_pSmcPlayerCode, ckSize, &ckSize);
mSmcPlayerCodeSize = ckSize;
 checkFlag |= 0x10;
break;
default:
//不明チャンクの場合は飛ばす
AdvDataPos(ckSize);
break;
 }
 }

// 正常にロードできている
if (checkFlag == 0x1f) {
mIsLoaded = true;
 }
returntrue;
}

intPlayerCodeReader::getVersion()
{
returnmVersion;
}

void *PlayerCodeReader::getSmcNativeVector()
{
return m_pSmcNativeVector;
}

void *PlayerCodeReader::getSmcEmulationVector()
{
return m_pSmcEmulationVector;
}

void *PlayerCodeReader::getSmcPlayerCode()
{
return m_pSmcPlayerCode;
}

intPlayerCodeReader::getSmcPlayerCodeSize()
{
returnmSmcPlayerCodeSize;
}

void *PlayerCodeReader::getSpcPlayerCode()
{
return m_pSpcPlayerCode;
}

intPlayerCodeReader::getSpcPlayerCodeSize()
{
returnmSpcPlayerCodeSize;
}