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STB Memory functions for fonts

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Add the ability to read and write to a stream.
This commit is contained in:
marauder2k7 2024-01-20 22:15:17 +00:00
parent 7216ba8530
commit 106346630d
4 changed files with 129 additions and 15 deletions
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36
Engine/source/gfx/bitmap/gBitmap.h
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@ -70,26 +70,31 @@ public:
struct Registration
{
/// The read function prototype.
/// The read functions prototype.
typedef bool(*ReadFunc)(const Torque::Path& path, GBitmap* bitmap);
/// The write function prototype. Compression levels are image-specific - see their registration declaration for details.
typedef bool(*ReadStreamFunc)(Stream& stream, GBitmap* bitmap, U32 len);
/// The write functions prototype. Compression levels are image-specific - see their registration declaration for details.
typedef bool(*WriteFunc)(const Torque::Path& path, GBitmap* bitmap, U32 compressionLevel);
typedef bool(*WriteStreamFunc)(Stream& stream, GBitmap* bitmap, U32 compressionLevel);
/// Used to sort the registrations so that
/// lookups occur in a fixed order.
U32 priority;
Vector<String> extensions; ///< the list of file extensions for this bitmap type [these should be lower case]
ReadFunc readFunc; ///< the read function to call for this bitmap type
WriteFunc writeFunc; ///< the write function to call for this bitmap type
U32 defaultCompression; ///< the default compression level [levels are image-specific - see their registration declaration for details]
ReadFunc readFunc; ///< the read function to read from a file.
WriteFunc writeFunc; ///< the write function to write to a file.
ReadStreamFunc readStreamFunc; ///< the read function to read from a stream.
WriteStreamFunc writeStreamFunc; ///< the write function to write to a stream.
U32 defaultCompression; ///< the default compression level [levels are image-specific - see their registration declaration for details]
Registration()
{
readFunc = NULL;
writeFunc = NULL;
readStreamFunc = NULL;
writeStreamFunc = NULL;
defaultCompression = 0;
priority = 0;
VECTOR_SET_ASSOCIATION( extensions );
@ -238,19 +243,24 @@ public:
//-------------------------------------- Input/Output interface
/// Read a bitmap from a stream
/// Read a bitmap from a file
/// @param bmType This is a file extension to describe the type of the data [i.e. "png" for PNG file, etc]
/// @param ioStream The stream to read from
bool readBitmap(const String& bmType, const Torque::Path& path);
bool readBitmap(const String& bmType, const Torque::Path& path);
/// Write a bitmap to a stream
/// Sane as above but reads from a stream.
bool readBitmapStream(const String& bmType, Stream& ioStream, U32 len);
/// Write a bitmap to a file
/// @param bmType This is a file extension to describe the type of the data [i.e. "png" for PNG file, etc]
/// @param ioStream The stream to read from
/// @param compressionLevel Image format specific compression level. For JPEG sets the quality level percentage, range 0 to 100.
/// For PNG compression level is 0 - 10
/// Not used for other image formats.
bool writeBitmap( const String &bmType, const Torque::Path& path, U32 compressionLevel = U32_MAX );
bool writeBitmap( const String &bmType, const Torque::Path& path, U32 compressionLevel = U32_MAX );
/// Sane as above but writes to a stream.
bool writeBitmapStream(const String& bmType, Stream& ioStream, U32 compressionLevel = U32_MAX);
bool readMNG(Stream& io_rStream); // located in bitmapMng.cc
bool writeMNG(Stream& io_rStream) const;