public static PCXHEADER LoadFromStream(Stream stream)
{
PCXHEADER header = new PCXHEADER ();
if (stream == null) {
return header;
}
var mgr = FilePathMgr.GetInstance ();
header.Manufacturer = (byte)stream.ReadByte ();
header.Version = (byte)stream.ReadByte ();
header.Encoding = (byte)stream.ReadByte ();
header.BPP = (byte)stream.ReadByte ();
header.x = (ushort)mgr.ReadShort (stream);
header.y = (ushort)mgr.ReadShort (stream);
header.widht = (ushort)mgr.ReadShort (stream);
header.height = (ushort)mgr.ReadShort (stream);
header.HRES = (ushort)mgr.ReadShort (stream);
header.VRES = (ushort)mgr.ReadShort (stream);
header.ColorMap = mgr.ReadString (stream, 48, System.Text.Encoding.ASCII);
header.reserved1 = (byte)stream.ReadByte ();
header.NPlanes = (byte)stream.ReadByte ();
header.bytesPerLine = (byte)stream.ReadByte ();
header.palletInfo = (byte)stream.ReadByte ();
header.HorzScreenSize = (ushort)mgr.ReadShort (stream);
header.VertScreenSize = (ushort)mgr.ReadShort (stream);
header.Reserved2 = mgr.ReadString(stream, 54, System.Text.Encoding.ASCII);
return header;
}
private void LoadPCXLine8(PCXHEADER header, Stream stream, ref byte[] lineBuffer)
{
int _LineWidth = header.bytesPerLine;
if (lineBuffer == null || lineBuffer.Length < _LineWidth)
lineBuffer = new byte[_LineWidth];
int _ReadIndex = 0;
while (true)
{
//判断行扫描结束返回码
if (stream.Position + 1 >= stream.Length)
break;
byte _Data = (byte)stream.ReadByte();
if (_Data > 0xC0)
{
int _Count = _Data - 0xC0;
byte sameData = 0;
for (int i = 0; i != _Count; ++i)
{
if (i == 0) {
sameData = (byte)stream.ReadByte ();
}
if (_ReadIndex >= _LineWidth)
break;
lineBuffer[_ReadIndex] = sameData;
++_ReadIndex;
}
}
else
{
lineBuffer[_ReadIndex] = _Data;
++_ReadIndex;
}
if (_ReadIndex >= _LineWidth) break;
}
}
private bool LoadPcx2(int offset, SFFSUBHEADER subHeader, byte[] source, ref Stream stream, out KeyValuePair<PCXHEADER, PCXDATA> dataPair)
{
if ((offset < 0) || (offset >= source.Length))
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
/*
if (source[offset] != 0x0A)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
// return false;
}
*/
if (stream == null)
stream = new MemoryStream(source);
try
{
stream.Seek(offset, SeekOrigin.Begin);
PCXHEADER header = PCXHEADER.LoadFromStream(stream);
if (header.BPP == 0)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return true;
}
header.widht = (ushort)(header.widht - header.x + 1);
header.height = (ushort)(header.height - header.y + 1);
// byte[] ret = new byte[header.widht * header.NPlanes * header.height];
byte[] ret = null;
byte[] lineBuffer = null;
for (int i = 0; i < (int)header.height; ++i)
{
switch (header.NPlanes)
{
// 24位
case 3:
LoadPCXLine24(header, stream, ref lineBuffer);
break;
// 256色
case 1:
LoadPCXLine8(header, stream, ref lineBuffer);
break;
default:
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
if (lineBuffer != null && lineBuffer.Length > 0)
{
int lineSize = header.NPlanes * header.widht;
if (ret == null)
{
// ret = new byte[header.widht * header.NPlanes * header.height];
ret = new byte[lineSize * header.height];
}
Buffer.BlockCopy(lineBuffer, 0, ret, i * lineSize, lineSize);
}
}
// H changed
int chgSize = header.NPlanes * header.widht;
byte[] temp = null;
if (lineBuffer != null && lineBuffer.Length >= chgSize)
temp = lineBuffer;
else
{
lineBuffer = null;
temp = new byte[chgSize];
}
for (int y = 0; y < (int)header.height / 2; ++y)
{
int x = ((int)header.height - 1 - y);
int s = y * chgSize;
int d = x * chgSize;
Buffer.BlockCopy(ret, d, temp, 0, chgSize);
Buffer.BlockCopy(ret, s, ret, d, chgSize);
Buffer.BlockCopy(temp, 0, ret, s, chgSize);
}
// 读取调色版
PCXDATA pcxData = new PCXDATA();
pcxData.data = ret;
pcxData.pallet = null;
if (!subHeader.PalletSame && !HasNormalPallet && header.NPlanes <= 1)
{
// 判断是不是9000，1
if (subHeader.GroubNumber == 9000 && subHeader.ImageNumber == 1)
{
pcxData.palletLink = m_currentLink;
}
else
{
if (stream.Position + 256 * 3 <= stream.Length)
{
pcxData.pallet = new Color32[256];
for (int i = 0; i != 256; ++i)
{
byte r = (byte)stream.ReadByte();
byte g = (byte)stream.ReadByte();
byte b = (byte)stream.ReadByte();
byte a;
if (i == 0)
a = 0;
else
{
if ((r == pcxData.pallet[i - 1].r) && (g == pcxData.pallet[i - 1].g) && (b == pcxData.pallet[i - 1].b))
a = 0;
else
a = 0xFF;
}
pcxData.pallet[i] = new Color32(r, g, b, a);
}
m_currentLink = new KeyValuePair<short, short>(subHeader.GroubNumber, subHeader.ImageNumber);
}
}
}
else
{
pcxData.palletLink = m_currentLink;
}
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>(header, pcxData);
}
catch (Exception e)
{
Debug.LogError(e.Message);
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
return true;
}
private void LoadPCXLine24(PCXHEADER header, Stream stream, ref byte[] lineBuffer)
{
Debug.LogError ("Call function LoadPCXLine24");
}
private byte[] DecodePcxData(int offset, PCXHEADER header, byte[] source)
{
byte[] ret = null;
if ((offset < 0) || (offset >= source.Length))
return ret;
//int nTotalyByte = (int)(header.bytesPerLine * header.NPlanes);
int bpp = (int)(header.NPlanes * 8);
if (bpp > 8)
return ret; // not support
try
{
int width = header.widht;
if (width < header.bytesPerLine * header.NPlanes)
width = header.bytesPerLine * header.NPlanes;
int size = 0;
int Pos = 0;
//ret = new byte[header.widht * header.NPlanes * header.height + 1];
ret = new byte[header.widht * header.NPlanes * header.height];
bool isEnd = false;
for (int y = 0; y < header.height; ++y)
{
if (isEnd)
break;
int x = 0;
while (x < width)
{
int idx = offset + Pos++;
if (idx >= source.Length)
{
isEnd = true;
break;
}
byte byData = source[idx];
if ((byData & 0xC0) == 0xC0)
{
size = byData & 0x3F;
idx = offset + Pos++;
if (idx >= source.Length)
{
isEnd = true;
break;
}
byData = source[idx];
} else
{
size = 1;
}
while (size-- > 0)
{
if (x <= header.widht)
{
idx = x + (y * header.widht * header.NPlanes);
if (idx >= ret.Length)
break;
ret[idx] = byData;
}
//this it to Skip blank data on PCX image wich are on the right side
// TODO:OK? Skip two bytes
if ((x == width) && (width != header.widht))
{
int nHowManyBlank = width - (int)header.widht;
for (int i = 0; i < nHowManyBlank; ++i)
Pos += 2;
}
x++;
}
}
}
// H changed
byte[] temp = new byte[header.widht];
int lineSize = header.widht * header.NPlanes;
for (int y = 0; y < (int)header.height/2; ++y)
{
int x = ((int)header.height - 1 - y);
int s = y * lineSize;
int d = x * lineSize;
Buffer.BlockCopy(ret, d, temp, 0, lineSize);
Buffer.BlockCopy(ret, s, ret, d, lineSize);
Buffer.BlockCopy(temp, 0, ret, s, lineSize);
}
} catch(Exception e)
{
Debug.LogError(e.Message);
return null;
}
return ret;
}
private bool LoadPcx(int offset, SFFSUBHEADER subHeader, byte[] source, out KeyValuePair<PCXHEADER, PCXDATA> dataPair)
{
if ((offset < 0) || (offset >= source.Length))
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
PCXHEADER header = new PCXHEADER();
int bufSize = Marshal.SizeOf(header);
if (offset + bufSize > source.Length)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
IntPtr buf = Marshal.AllocHGlobal(bufSize);
try
{
Marshal.Copy(source, offset, buf, bufSize);
header = (PCXHEADER)Marshal.PtrToStructure(buf, typeof(PCXHEADER));
} finally
{
Marshal.FreeHGlobal(buf);
}
if (header.BPP == 0)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return true;
}
offset += bufSize;
int pcxBufSz = (int)subHeader.LenghtOfSubheader - 127;
if (pcxBufSz <= 0)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return true;
}
if (offset + pcxBufSz > source.Length)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return true;
}
byte[] pcxBuf = new byte[pcxBufSz];
Buffer.BlockCopy(source, offset, pcxBuf, 0, pcxBufSz);
offset += pcxBufSz;
if (offset >= source.Length)
{
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return false;
}
header.widht = (ushort)(header.widht - header.x + 1);
header.height = (ushort)(header.height - header.y + 1);
//byte[] dst = DecodePcxData(offset, header, pcxBuf);
byte[] dst = DecodePcxData(0, header, pcxBuf);
pcxBuf = null;
if ((dst == null) || (dst.Length <= 0))
{
// empty
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>();
return true;
}
PCXDATA pcxData = new PCXDATA();
pcxData.data = dst;
pcxData.pallet = null;
// 判断是不是9000，1
// if (subHeader.GroubNumber == 9000 && subHeader.ImageNumber == 1) {
// pcxData.palletLink = m_currentLink;
/*} else*/ {
offset -= 768;
//eat empty 8bit
offset++;
byte s = source [offset++];
if ((s == 12) && !subHeader.PalletSame && !HasNormalPallet && header.NPlanes <= 1)
{ // if (!subHeader.PalletSame && !HasNormalPallet && header.NPlanes <= 1)
// load pallet
pcxData.pallet = new Color32[256];
for (int i = 0; i < 256; ++i) {
byte r = source [offset++];
byte g = source [offset++];
byte b = source [offset++];
byte a;
if (i == 0)
a = 0;
else {
if ((r == pcxData.pallet [i - 1].r) && (g == pcxData.pallet [i - 1].g) && (b == pcxData.pallet [i - 1].b))
a = 0;
else
a = 0xFF;
}
pcxData.pallet [i] = new Color32 (r, g, b, a);
}
m_currentLink = new KeyValuePair<short, short> (subHeader.GroubNumber, subHeader.ImageNumber);
} else
pcxData.palletLink = m_currentLink;
}
dataPair = new KeyValuePair<PCXHEADER, PCXDATA>(header, pcxData);
return true;
}
private void OnSffReaderV2(sff.sffReader reader, sff.sprMsgV2 spr, int linkGoup, int linkIndex, int linkPalGroup, int linkPalIndex, byte[] rawData)
{
bool isImageLink = linkGoup >= 0 && linkIndex >= 0;
if (!isImageLink) {
KeyValuePair<uint, uint> key = new KeyValuePair<uint, uint>((uint)spr.group, (uint)spr.index);
if (mPcxDataMap.ContainsKey(key))
return;
PCXHEADER header = new PCXHEADER ();
header.widht = spr.width;
header.height = spr.height;
// header.x = (ushort)spr.x;
//header.y = (ushort)spr.y;
header.x = 0;
header.y = 0;
header.NPlanes = 1;
if (rawData != null && rawData.Length > 0) {
int chgSize = header.NPlanes * header.widht;
byte[] temp = null;
if (m_lineBuffer != null && m_lineBuffer.Length >= chgSize)
temp = m_lineBuffer;
else {
temp = new byte[chgSize];
m_lineBuffer = temp;
}
for (int y = 0; y < (int)header.height / 2; ++y) {
int x = ((int)header.height - 1 - y);
int s = y * chgSize;
int d = x * chgSize;
Buffer.BlockCopy (rawData, d, temp, 0, chgSize);
Buffer.BlockCopy (rawData, s, rawData, d, chgSize);
Buffer.BlockCopy (temp, 0, rawData, s, chgSize);
}
}
PCXDATA data = new PCXDATA ();
data.data = rawData;
bool isPalletLink = (linkPalGroup >= 0 && linkPalIndex >= 0) && ((linkPalGroup != spr.group) || (linkPalIndex != spr.index));
if (!isPalletLink) {
byte[] pal = reader.GetPal (spr.group, spr.index);
//data.pallet = GetPalletFromByteArr (pal);
data.pallet = pal;
data.palletLink = new KeyValuePair<short, short> (-1, -1);
} else {
data.palletLink = new KeyValuePair<short, short> ((short)linkPalGroup, (short)linkPalIndex);
data.pallet = null;
}
KeyValuePair<PCXHEADER, PCXDATA> value = new KeyValuePair<PCXHEADER, PCXDATA> (header, data);
mPcxDataMap.Add (key, value);
}
SFFSUBHEADER subHeader = new SFFSUBHEADER ();
subHeader.GroubNumber = (short)spr.group;
subHeader.ImageNumber = (short)spr.index;
subHeader.x = spr.x;
subHeader.y = spr.y;
if (isImageLink) {
subHeader.IndexOfPrevious = (short)GetSubHeaderIndex (linkGoup, linkIndex);
subHeader.LenghtOfSubheader = 0;
} else {
subHeader.IndexOfPrevious = -1;
}
SubHeaders.Add(subHeader);
}