/// <summary>
/// Parse an PCS packet which contains width/height info
/// </summary>
/// <param name="segment">object containing info about the current segment</param>
/// <param name="pic">SubPicture object containing info about the current caption</param>
/// <param name="msg">reference to message string</param>
/// <param name="buffer">Raw data buffer, starting right after segment</param>
private static PcsObject ParsePcs(byte[] buffer, int offset)
{
var pcs = new PcsObject();
// composition_object:
pcs.ObjectId = BigEndianInt16(buffer, 11 + offset); // 16bit object_id_ref
pcs.WindowId = buffer[13 + offset];
// skipped: 8bit window_id_ref
// object_cropped_flag: 0x80, forced_on_flag = 0x040, 6bit reserved
int forcedCropped = buffer[14 + offset];
pcs.IsForced = ((forcedCropped & 0x40) == 0x40);
pcs.Origin = new Point(BigEndianInt16(buffer, 15 + offset), BigEndianInt16(buffer, 17 + offset));
return(pcs);
}
private static PcsData ParsePicture(byte[] buffer, SupSegment segment)
{
var sb = new StringBuilder();
var pcs = new PcsData();
pcs.Size = new Size(BigEndianInt16(buffer, 0), BigEndianInt16(buffer, 2));
pcs.FramesPerSecondType = buffer[4]; // hi nibble: frame_rate, lo nibble: reserved
pcs.CompNum = BigEndianInt16(buffer, 5);
pcs.CompositionState = GetCompositionState(buffer[7]);
pcs.StartTime = segment.PtsTimestamp;
// 8bit palette_update_flag (0x80), 7bit reserved
pcs.PaletteUpdate = (buffer[8] == 0x80);
pcs.PaletteId = buffer[9]; // 8bit palette_id_ref
int compositionObjectCount = buffer[10]; // 8bit number_of_composition_objects (0..2)
sb.AppendFormat("CompNum: {0}, Pts: {1}, State: {2}, PalUpdate: {3}, PalId {4}", pcs.CompNum, ToolBox.PtsToTimeString(pcs.StartTime), pcs.CompositionState, pcs.PaletteUpdate, pcs.PaletteId);
if (pcs.CompositionState == CompositionState.Invalid)
{
sb.Append("Illegal composition state Invalid");
}
else
{
int offset = 0;
pcs.PcsObjects = new List <PcsObject>();
for (int compObjIndex = 0; compObjIndex < compositionObjectCount; compObjIndex++)
{
PcsObject pcsObj = ParsePcs(buffer, offset);
pcs.PcsObjects.Add(pcsObj);
sb.AppendLine();
sb.AppendFormat("ObjId: {0}, WinId: {1}, Forced: {2}, X: {3}, Y: {4}",
pcsObj.ObjectId, pcsObj.WindowId, pcsObj.IsForced, pcsObj.Origin.X, pcsObj.Origin.Y);
offset += 8;
}
}
pcs.Message = sb.ToString();
return(pcs);
}
/// <summary>
/// Decode caption from the input stream
/// </summary>
/// <returns>bitmap of the decoded caption</returns>
public static Bitmap DecodeImage(PcsObject pcs, IList<OdsData> data, List<PaletteInfo> palettes)
{
if (pcs == null || data == null || data.Count == 0)
return new Bitmap(1, 1);
int w = data[0].Size.Width;
int h = data[0].Size.Height;
var bm = new FastBitmap(new Bitmap(w, h));
bm.LockImage();
BluRaySupPalette pal = DecodePalette(palettes);
int index = 0;
int ofs = 0;
int xpos = 0;
byte[] buf = data[0].Fragment.ImageBuffer;
index = 0;
do
{
int b = buf[index++] & 0xff;
if (b == 0 && index < buf.Length)
{
b = buf[index++] & 0xff;
if (b == 0)
{
// next line
ofs = (ofs / w) * w;
if (xpos < w)
ofs += w;
xpos = 0;
}
else
{
int size;
if ((b & 0xC0) == 0x40)
{
if (index < buf.Length)
{
// 00 4x xx -> xxx zeroes
size = ((b - 0x40) << 8) + (buf[index++] & 0xff);
Color c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else if ((b & 0xC0) == 0x80)
{
if (index < buf.Length)
{
// 00 8x yy -> x times value y
size = (b - 0x80);
b = buf[index++] & 0xff;
Color c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else if ((b & 0xC0) != 0)
{
if (index < buf.Length)
{
// 00 cx yy zz -> xyy times value z
size = ((b - 0xC0) << 8) + (buf[index++] & 0xff);
b = buf[index++] & 0xff;
Color c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else
{
// 00 xx -> xx times 0
Color c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < b; i++)
PutPixel(bm, ofs++, c);
xpos += b;
}
}
}
else
{
PutPixel(bm, ofs++, b, pal);
xpos++;
}
} while (index < buf.Length);
bm.UnlockImage();
return bm.GetBitmap();
}
/// <summary>
/// Parse an PCS packet which contains width/height info
/// </summary>
/// <param name="buffer">Raw data buffer, starting right after segment</param>
private static PcsObject ParsePcs(byte[] buffer, int offset)
{
var pcs = new PcsObject();
// composition_object:
pcs.ObjectId = BigEndianInt16(buffer, 11 + offset); // 16bit object_id_ref
pcs.WindowId = buffer[13 + offset];
// skipped: 8bit window_id_ref
// object_cropped_flag: 0x80, forced_on_flag = 0x040, 6bit reserved
int forcedCropped = buffer[14 + offset];
pcs.IsForced = ((forcedCropped & 0x40) == 0x40);
pcs.Origin = new Point(BigEndianInt16(buffer, 15 + offset), BigEndianInt16(buffer, 17 + offset));
return pcs;
}
/// <summary>
/// Decode caption from the input stream
/// </summary>
/// <returns>bitmap of the decoded caption</returns>
public static Bitmap DecodeImage(PcsObject pcs, IList <OdsData> data, List <PaletteInfo> palettes)
{
if (pcs == null || data == null || data.Count == 0)
{
return(new Bitmap(1, 1));
}
int w = data[0].Size.Width;
int h = data[0].Size.Height;
if (w <= 0 || h <= 0 || data[0].Fragment.ImageBuffer.Length == 0)
{
return(new Bitmap(1, 1));
}
var bm = new FastBitmap(new Bitmap(w, h));
bm.LockImage();
var pal = DecodePalette(palettes);
int ofs = 0;
int xpos = 0;
var index = 0;
byte[] buf = data[0].Fragment.ImageBuffer;
do
{
int b = buf[index++] & 0xff;
if (b == 0 && index < buf.Length)
{
b = buf[index++] & 0xff;
if (b == 0)
{
// next line
ofs = ofs / w * w;
if (xpos < w)
{
ofs += w;
}
xpos = 0;
}
else
{
int size;
if ((b & 0xC0) == 0x40)
{
if (index < buf.Length)
{
// 00 4x xx -> xxx zeroes
size = ((b - 0x40) << 8) + (buf[index++] & 0xff);
var c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < size; i++)
{
PutPixel(bm, ofs++, c);
}
xpos += size;
}
}
else if ((b & 0xC0) == 0x80)
{
if (index < buf.Length)
{
// 00 8x yy -> x times value y
size = (b - 0x80);
b = buf[index++] & 0xff;
var c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
{
PutPixel(bm, ofs++, c);
}
xpos += size;
}
}
else if ((b & 0xC0) != 0)
{
if (index < buf.Length)
{
// 00 cx yy zz -> xyy times value z
size = ((b - 0xC0) << 8) + (buf[index++] & 0xff);
b = buf[index++] & 0xff;
var c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
{
PutPixel(bm, ofs++, c);
}
xpos += size;
}
}
else
{
// 00 xx -> xx times 0
var c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < b; i++)
{
PutPixel(bm, ofs++, c);
}
xpos += b;
}
}
}
else
{
PutPixel(bm, ofs++, b, pal);
xpos++;
}
} while (index < buf.Length);
bm.UnlockImage();
return(bm.GetBitmap());
}
/// <summary>
/// Decode caption from the input stream
/// </summary>
/// <returns>bitmap of the decoded caption</returns>
public static Image <Rgba32> DecodeImage(PcsObject pcs, IList <OdsData> data, List <PaletteInfo> palettes)
{
if (pcs == null || data == null || data.Count == 0)
{
return(new Image <Rgba32>(1, 1));
}
int w = data[0].Size.Width;
int h = data[0].Size.Height;
var pal = BluRaySupParser.SupDecoder.DecodePalette(palettes);
var bm = new Image <Rgba32>(w, h);
bm.TryGetSinglePixelSpan(out var pixelSpan);
int ofs = 0;
int xpos = 0;
var index = 0;
byte[] buf = data[0].Fragment.ImageBuffer;
do
{
int b = buf[index++] & 0xff;
if (b == 0 && index < buf.Length)
{
b = buf[index++] & 0xff;
if (b == 0)
{
// next line
ofs = (ofs / w) * w;
if (xpos < w)
{
ofs += w;
}
xpos = 0;
}
else
{
int size;
if ((b & 0xC0) == 0x40)
{
if (index < buf.Length)
{
// 00 4x xx -> xxx zeroes
size = ((b - 0x40) << 8) + (buf[index++] & 0xff);
var c = GetColorFromInt(pal.GetArgb(0));
for (int i = 0; i < size; i++)
{
PutPixel(pixelSpan, ofs++, c);
}
xpos += size;
}
}
else if ((b & 0xC0) == 0x80)
{
if (index < buf.Length)
{
// 00 8x yy -> x times value y
size = (b - 0x80);
b = buf[index++] & 0xff;
var c = GetColorFromInt(pal.GetArgb(b));
for (int i = 0; i < size; i++)
{
PutPixel(pixelSpan, ofs++, c);
}
xpos += size;
}
}
else if ((b & 0xC0) != 0)
{
if (index < buf.Length)
{
// 00 cx yy zz -> xyy times value z
size = ((b - 0xC0) << 8) + (buf[index++] & 0xff);
b = buf[index++] & 0xff;
var c = GetColorFromInt(pal.GetArgb(b));
for (int i = 0; i < size; i++)
{
PutPixel(pixelSpan, ofs++, c);
}
xpos += size;
}
}
else
{
// 00 xx -> xx times 0
var c = GetColorFromInt(pal.GetArgb(0));
for (int i = 0; i < b; i++)
{
PutPixel(pixelSpan, ofs++, c);
}
xpos += b;
}
}
}
else
{
PutPixel(pixelSpan, ofs++, b, pal);
xpos++;
}
} while (index < buf.Length);
return(bm);
}