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Add PNG read support to plPNG.

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This commit is contained in:
Joseph Davies
2011-05-09 22:09:27 -07:00
parent 3e34e30308
commit 8cee080878
3 changed files with 92 additions and 14 deletions
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8
MOULOpenSourceClientPlugin/Plasma20/MsDevProjects/Plasma/Apps/plClient/plClient.vcproj
View File

@ -39,11 +39,11 @@
Name="VCCustomBuildTool"/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="winhttp.lib ogg_static_d.lib vorbis_static_d.lib vorbisfile_static_d.lib ksproxy.lib strmiids.lib eax.lib wininet.lib vfw32.lib winmm.lib ijl15l.lib libcrypto.a ws2_32.lib version.lib odbc32.lib odbccp32.lib eaxguid.lib libspeex.lib binkw32.lib Rpcrt4.lib largeint.lib Iphlpapi.lib OpenAL32.lib"
AdditionalDependencies="winhttp.lib ogg_static_d.lib vorbis_static_d.lib vorbisfile_static_d.lib ksproxy.lib strmiids.lib eax.lib wininet.lib vfw32.lib winmm.lib ijl15l.lib libcrypto.a ws2_32.lib version.lib odbc32.lib odbccp32.lib eaxguid.lib libspeex.lib binkw32.lib Rpcrt4.lib largeint.lib Iphlpapi.lib OpenAL32.lib libpngd.lib"
OutputFile="Debug/plClient_dbg.exe"
LinkIncremental="1"
SuppressStartupBanner="TRUE"
AdditionalLibraryDirectories="&quot;..\..\..\..\..\StaticSDKs\XPlatform\expat-1.95.7\StaticLibs\Win32&quot;;&quot;..\..\..\..\..\StaticSDKs\Win32\speex-1.0.1\win32\libspeex\Release&quot;;..\..\..\..\..\StaticSDKs\Win32\Bink\lib;..\..\..\..\..\StaticSDKs\Win32\eax\lib;..\..\..\..\..\StaticSDKs\Win32\oggvorbis\lib;..\..\..\..\..\STATICSDKS\XPLATFORM\STLPORT\lib;..\..\..\..\..\STATICSDKS\Win32\ijl\lib;..\..\..\..\..\StaticSDKs\Win32\WMSDK\lib;..\..\..\..\..\StaticSDKs\Win32\OpenSSL\lib;..\..\..\..\..\StaticSDKs\Win32\dx9.0csdk\lib;..\..\..\..\..\StaticSDKs\Win32\PhysX\lib\win32;..\..\..\..\..\StaticSDKs\Win32\OpenAL 1.1 with EFX SDK\libs\Win32;..\..\..\..\..\StaticSDKs\Win32\PlatformSDK\Lib"
AdditionalLibraryDirectories="&quot;..\..\..\..\..\StaticSDKs\XPlatform\expat-1.95.7\StaticLibs\Win32&quot;;&quot;..\..\..\..\..\StaticSDKs\Win32\speex-1.0.1\win32\libspeex\Release&quot;;..\..\..\..\..\StaticSDKs\Win32\Bink\lib;..\..\..\..\..\StaticSDKs\Win32\eax\lib;..\..\..\..\..\StaticSDKs\Win32\oggvorbis\lib;..\..\..\..\..\STATICSDKS\XPLATFORM\STLPORT\lib;..\..\..\..\..\STATICSDKS\Win32\ijl\lib;..\..\..\..\..\StaticSDKs\Win32\WMSDK\lib;..\..\..\..\..\StaticSDKs\Win32\OpenSSL\lib;..\..\..\..\..\StaticSDKs\Win32\dx9.0csdk\lib;..\..\..\..\..\StaticSDKs\Win32\PhysX\lib\win32;..\..\..\..\..\StaticSDKs\Win32\OpenAL 1.1 with EFX SDK\libs\Win32;..\..\..\..\..\StaticSDKs\Win32\PlatformSDK\Lib;&quot;..\..\..\..\..\StaticSDKs\XPlatform\png\lib&quot;"
IgnoreDefaultLibraryNames="libc.lib,libcd.lib,libci.lib,libcid.lib,libcmtd.lib,libcmt.lib"
GenerateDebugInformation="TRUE"
AssemblyDebug="1"
@ -124,11 +124,11 @@ xcopy /Y ..\..\..\..\..\StaticSDKs\Win32\PhysX\Bin\win32\PhysXLoader.dll ..\..\.
Name="VCCustomBuildTool"/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="winhttp.lib ogg_static.lib vorbis_static.lib vorbisfile_static.lib strmiids.lib wininet.lib vfw32.lib winmm.lib libjpeg.lib libeay32.lib ws2_32.lib version.lib odbc32.lib odbccp32.lib libspeex.lib Rpcrt4.lib largeint.lib Iphlpapi.lib OpenAL32.lib"
AdditionalDependencies="winhttp.lib ogg_static.lib vorbis_static.lib vorbisfile_static.lib strmiids.lib wininet.lib vfw32.lib winmm.lib libjpeg.lib libeay32.lib ws2_32.lib version.lib odbc32.lib odbccp32.lib libspeex.lib Rpcrt4.lib largeint.lib Iphlpapi.lib OpenAL32.lib libpng.lib"
OutputFile=".\Release/plClient.exe"
LinkIncremental="1"
SuppressStartupBanner="TRUE"
AdditionalLibraryDirectories="&quot;..\..\..\..\..\StaticSDKs\XPlatform\expat-1.95.7\StaticLibs\Win32&quot;;&quot;..\..\..\..\..\StaticSDKs\Win32\speex-1.0.1\Win32\libspeex\Release&quot;;..\..\..\..\..\StaticSDKs\Win32\Bink\lib;..\..\..\..\..\StaticSDKs\Win32\oggvorbis\lib;..\..\..\..\..\STATICSDKS\XPLATFORM\STLPORT\lib;..\..\..\..\..\StaticSDKs\Win32\WMSDK\lib;..\..\..\..\..\StaticSDKs\Win32\OpenSSL\lib;..\..\..\..\..\StaticSDKs\Win32\DX9.0c\Lib\x86;..\..\..\..\..\StaticSDKs\Win32\PhysX\lib\win32;&quot;..\..\..\..\..\StaticSDKs\Win32\OpenAL 1.1 with EFX SDK\libs\Win32&quot;;..\..\..\..\..\StaticSDKs\Win32\PlatformSDK\Lib;&quot;..\..\..\..\..\StaticSDKs\XPlatform\jpeg-8c-rgba&quot;"
AdditionalLibraryDirectories="&quot;..\..\..\..\..\StaticSDKs\XPlatform\expat-1.95.7\StaticLibs\Win32&quot;;&quot;..\..\..\..\..\StaticSDKs\Win32\speex-1.0.1\Win32\libspeex\Release&quot;;..\..\..\..\..\StaticSDKs\Win32\Bink\lib;..\..\..\..\..\StaticSDKs\Win32\oggvorbis\lib;..\..\..\..\..\STATICSDKS\XPLATFORM\STLPORT\lib;..\..\..\..\..\StaticSDKs\Win32\WMSDK\lib;..\..\..\..\..\StaticSDKs\Win32\OpenSSL\lib;..\..\..\..\..\StaticSDKs\Win32\DX9.0c\Lib\x86;..\..\..\..\..\StaticSDKs\Win32\PhysX\lib\win32;&quot;..\..\..\..\..\StaticSDKs\Win32\OpenAL 1.1 with EFX SDK\libs\Win32&quot;;..\..\..\..\..\StaticSDKs\Win32\PlatformSDK\Lib;&quot;..\..\..\..\..\StaticSDKs\XPlatform\jpeg-8c-rgba&quot;;&quot;..\..\..\..\..\StaticSDKs\XPlatform\png\lib&quot;"
IgnoreDefaultLibraryNames="libc.lib,libci.lib,libcmt.lib"
GenerateDebugInformation="TRUE"
AssemblyDebug="1"

94
MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plGImage/plPNG.cpp
View File

@ -32,9 +32,39 @@ You can contact Cyan Worlds, Inc. by email legal@cyan.com
#include "../plGImage/plMipmap.h"
#include <png.h>
#define PNGSIGSIZE 8
// Custom functions to read and write data from or to an hsStream
// used by libPNG's respective functions
void pngReadDelegate(png_structp png_ptr, png_bytep png_data, png_size_t length)
{
hsStream *inStream = (hsStream *)png_get_io_ptr(png_ptr);
inStream->Read(length, (UInt8 *)png_data);
}
plMipmap *plPNG::IRead( hsStream *inStream )
void pngWriteDelegate(png_structp png_ptr, png_bytep png_data, png_size_t length)
{
}
void pngFlushDelegate(png_structp png_ptr)
{
}
//// Singleton Instance ///////////////////////////////////////////////////////
plPNG &plPNG::Instance( void )
{
static plPNG theInstance;
return theInstance;
}
//// IRead ////////////////////////////////////////////////////////////////////
// Given an open hsStream, reads the PNG data off of the
// stream and decodes it into a new plMipmap. The mipmap's buffer ends up
// being a packed RGBA buffer.
// Returns a pointer to the new mipmap if successful, NULL otherwise.
plMipmap* plPNG::IRead( hsStream *inStream )
{
plMipmap *newMipmap = NULL;
png_structp png_ptr;
@ -44,12 +74,10 @@ plMipmap *plPNG::IRead( hsStream *inStream )
try
{
// Check PNG Signature
png_byte sig[8];
png_byte sig[PNGSIGSIZE];
inStream->Read8Bytes((char *) sig);
if (!png_sig_cmp(sig, 0, 8))
if (!png_sig_cmp(sig, 0, PNGSIGSIZE))
{
inStream->Rewind();
// Allocate required structs
png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (!png_ptr)
@ -69,10 +97,57 @@ plMipmap *plPNG::IRead( hsStream *inStream )
throw( false );
}
// Assign delegate function for reading from hsStream
png_set_read_fn(png_ptr, (png_voidp)inStream, pngReadDelegate);
// Get PNG Header information
png_set_sig_bytes(png_ptr, PNGSIGSIZE);
png_read_info(png_ptr, info_ptr);
png_uint_32 imgWidth = png_get_image_width(png_ptr, info_ptr);
png_uint_32 imgHeight = png_get_image_height(png_ptr, info_ptr);
png_uint_32 bitdepth = png_get_bit_depth(png_ptr, info_ptr);
png_uint_32 channels = png_get_channels(png_ptr, info_ptr);
png_uint_32 color_type = png_get_color_type(png_ptr, info_ptr);
// Convert images to RGB color space
switch (color_type) {
case PNG_COLOR_TYPE_PALETTE:
png_set_palette_to_rgb(png_ptr);
channels = 3;
break;
case PNG_COLOR_TYPE_GRAY:
if (bitdepth < 8)
png_set_expand_gray_1_2_4_to_8(png_ptr);
bitdepth = 8;
break;
}
// Convert transparency (if needed) to a full alpha channel
if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
{
png_set_tRNS_to_alpha(png_ptr);
channels+=1;
}
png_set_bgr(png_ptr);
/// Construct a new mipmap to hold everything
newMipmap = TRACKED_NEW plMipmap(imgWidth, imgHeight, plMipmap::kARGB32Config, 1, plMipmap::kUncompressed);
char *destp = (char *)newMipmap->GetImage();
png_bytep *row_ptrs = new png_bytep[imgHeight];
const unsigned int stride = imgWidth * bitdepth * channels / 8;
// Assign row pointers to the appropriate locations in the newly-created Mipmap
for (size_t i = 0; i < imgHeight; i++)
{
row_ptrs[i] = (png_bytep)destp + (i * stride);
}
png_read_image(png_ptr, row_ptrs);
// Clean up allocated structs
png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
delete [] row_ptrs;
}
}
catch( ... )
@ -105,12 +180,13 @@ plMipmap* plPNG::ReadFromFile( const wchar *fileName )
return ret;
}
hsBool plPNG::IWrite( plMipmap *source, hsStream *outStream )
hsBool plPNG::IWrite( plMipmap *source, hsStream *outStream )
{
hsBool result = true;
try
{
//png_set_write_fn(png_ptr, (png_voidp)&outStream, pngWriteDelegate, pngFlushDelegate);
}
catch( ... )
{
@ -120,7 +196,7 @@ hsBool plPNG::IWrite( plMipmap *source, hsStream *outStream )
return result;
}
hsBool plPNG::WriteToFile( const char *fileName, plMipmap *sourceData )
hsBool plPNG::WriteToFile( const char *fileName, plMipmap *sourceData )
{
wchar* wFilename = hsStringToWString(fileName);
hsBool retVal = WriteToFile(wFilename, sourceData);
@ -128,7 +204,7 @@ hsBool plPNG::WriteToFile( const char *fileName, plMipmap *sourceData )
return retVal;
}
hsBool plPNG::WriteToFile( const wchar *fileName, plMipmap *sourceData )
hsBool plPNG::WriteToFile( const wchar *fileName, plMipmap *sourceData )
{
hsUNIXStream out;
if (!out.Open(fileName, L"wb"))
@ -136,4 +212,4 @@ hsBool plPNG::WriteToFile( const wchar *fileName, plMipmap *sourceData )
hsBool ret = IWrite(sourceData, &out);
out.Close();
return ret;
}
}

4
MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plGImage/plPNG.h
View File

@ -49,6 +49,8 @@ class plPNG
hsBool WriteToStream( hsStream *outStream, plMipmap *sourceData ) { return IWrite( sourceData, outStream ); }
hsBool WriteToFile( const char *fileName, plMipmap *sourceData );
hsBool WriteToFile( const wchar *fileName, plMipmap *sourceData );
static plPNG &Instance( void );
};
#endif // _plPNG_h
#endif // _plPNG_h