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usbloadergx/source/libwiigui/gui_imagedata.cpp
giantpune 9e79c9d99b * remove little unused code 
* code cleanup
2010-09-18 23:16:05 +00:00

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/****************************************************************************
* libwiigui
*
* Tantric 2009
*
* gui_imagedata.cpp
*
* LoadJpeg copyright by r-win for WiiXplorer
* check WiiXplorer source for license conditions
*
* GUI class definitions
***************************************************************************/
#include "gui.h"
#ifdef __cplusplus
extern "C"
{
#endif
#include <jpeglib.h>
#ifdef __cplusplus
}
#endif
#define new_width 640
#define new_height 480
/**
* Constructor for the GuiImageData class.
*/
extern int idiotFlag;
extern char idiotChar[50];
GuiImageData::GuiImageData( const u8 * img )
{
data = NULL;
width = 0;
height = 0;
if ( img )
{
PNGUPROP imgProp;
IMGCTX ctx = PNGU_SelectImageFromBuffer( img );
if ( !ctx )
return;
int res = PNGU_GetImageProperties( ctx, &imgProp );
//if (((4%imgProp.imgWidth)!=0)||((4%imgProp.imgHeight)!=0))idiotFlag=1;
if ( res == PNGU_OK )
{
int len = imgProp.imgWidth * imgProp.imgHeight * 4;
if ( len % 32 ) len += ( 32 - len % 32 );
data = ( u8 * )memalign ( 32, len );
if ( data )
{
res = PNGU_DecodeTo4x4RGBA8 ( ctx, imgProp.imgWidth, imgProp.imgHeight, data, 255 );
if ( res == PNGU_OK )
{
width = imgProp.imgWidth;
height = imgProp.imgHeight;
DCFlushRange( data, len );
}
else
{
free( data );
data = NULL;
idiotFlag = 1;
snprintf( idiotChar, sizeof( idiotChar ), "%s", img );
}
}
}
PNGU_ReleaseImageContext ( ctx );
}
}
GuiImageData::GuiImageData( const u8 * img, int imgSize )
{
data = NULL;
width = 0;
height = 0;
if ( img )
{
if ( img[0] == 0xFF && img[1] == 0xD8 ) // IMAGE_JPEG
{
LoadJpeg( img, imgSize );
}
}
}
/**
* Constructor for the GuiImageData class.
*/
GuiImageData::GuiImageData( const char * imgPath, const u8 * buffer )
{
data = NULL;
width = 0;
height = 0;
if ( imgPath )
{
PNGUPROP imgProp;
IMGCTX ctx = PNGU_SelectImageFromDevice( imgPath );
//if (((4%imgProp.imgWidth)!=0)||((4%imgProp.imgHeight)!=0))idiotFlag=1;
if ( ctx )
{
int res = PNGU_GetImageProperties( ctx, &imgProp );
if ( res == PNGU_OK )
{
int len = imgProp.imgWidth * imgProp.imgHeight * 4;
if ( len % 32 ) len += ( 32 - len % 32 );
data = ( u8 * )memalign ( 32, len );
if ( data )
{
res = PNGU_DecodeTo4x4RGBA8 ( ctx, imgProp.imgWidth, imgProp.imgHeight, data, 255 );
if ( res == PNGU_OK )
{
width = imgProp.imgWidth;
height = imgProp.imgHeight;
DCFlushRange( data, len );
}
else
{
free( data );
data = NULL;
idiotFlag = 1;
snprintf( idiotChar, sizeof( idiotChar ), "%s", imgPath );
}
}
}
PNGU_ReleaseImageContext ( ctx );
}
}
if ( !data ) //use buffer data instead
{
width = 0;
height = 0;
if ( buffer )
{
PNGUPROP imgProp;
IMGCTX ctx = PNGU_SelectImageFromBuffer( buffer );
if ( !ctx )
return;
int res = PNGU_GetImageProperties( ctx, &imgProp );
if ( res == PNGU_OK )
{
int len = imgProp.imgWidth * imgProp.imgHeight * 4;
if ( len % 32 ) len += ( 32 - len % 32 );
data = ( u8 * )memalign ( 32, len );
if ( data )
{
res = PNGU_DecodeTo4x4RGBA8 ( ctx, imgProp.imgWidth, imgProp.imgHeight, data, 255 );
if ( res == PNGU_OK )
{
width = imgProp.imgWidth;
height = imgProp.imgHeight;
DCFlushRange( data, len );
}
else
{
free( data );
data = NULL;
}
}
}
PNGU_ReleaseImageContext ( ctx );
}
}
}
/**
* Constructor for the GuiImageData class.
*/
GuiImageData::GuiImageData( const char *path, const char *file, const u8 *buffer, bool force_widescreen/*=false*/, const u8 *wbuffer/*=NULL*/ )
{
data = NULL;
width = 0;
height = 0;
char path_4_3[100];
char path_16_9[100];
char *imgPath;
snprintf( path_4_3, sizeof( path_4_3 ), "%s%s", path, file );
if ( force_widescreen )
{
snprintf( path_16_9, sizeof( path_16_9 ), "%sw%s", path, file );
imgPath = path_16_9;
if ( wbuffer )
buffer = wbuffer;
}
else
imgPath = path_4_3;
for ( ;; )
{
if ( imgPath )
{
PNGUPROP imgProp;
IMGCTX ctx = PNGU_SelectImageFromDevice( imgPath );
//if (((4%imgProp.imgWidth)!=0)||((4%imgProp.imgHeight)!=0))idiotFlag=1;
if ( ctx )
{
int res = PNGU_GetImageProperties( ctx, &imgProp );
if ( res == PNGU_OK )
{
int len = imgProp.imgWidth * imgProp.imgHeight * 4;
if ( len % 32 ) len += ( 32 - len % 32 );
data = ( u8 * )memalign ( 32, len );
if ( data )
{
res = PNGU_DecodeTo4x4RGBA8 ( ctx, imgProp.imgWidth, imgProp.imgHeight, data, 255 );
if ( res == PNGU_OK )
{
width = imgProp.imgWidth;
height = imgProp.imgHeight;
DCFlushRange( data, len );
}
else
{
free( data );
data = NULL;
idiotFlag = 1;
snprintf( idiotChar, sizeof( idiotChar ), "%s", imgPath );
}
}
}
PNGU_ReleaseImageContext ( ctx );
}
}
if ( data || imgPath == path_4_3 )
break;
imgPath = path_4_3;
}
if ( !data ) //use buffer data instead
{
width = 0;
height = 0;
if ( buffer )
{
PNGUPROP imgProp;
IMGCTX ctx = PNGU_SelectImageFromBuffer( buffer );
if ( !ctx )
return;
int res = PNGU_GetImageProperties( ctx, &imgProp );
if ( res == PNGU_OK )
{
int len = imgProp.imgWidth * imgProp.imgHeight * 4;
if ( len % 32 ) len += ( 32 - len % 32 );
data = ( u8 * )memalign ( 32, len );
if ( data )
{
res = PNGU_DecodeTo4x4RGBA8 ( ctx, imgProp.imgWidth, imgProp.imgHeight, data, 255 );
if ( res == PNGU_OK )
{
width = imgProp.imgWidth;
height = imgProp.imgHeight;
DCFlushRange( data, len );
}
else
{
free( data );
data = NULL;
}
}
}
PNGU_ReleaseImageContext ( ctx );
}
}
}
/**
* Destructor for the GuiImageData class.
*/
GuiImageData::~GuiImageData()
{
if ( data )
{
free( data );
data = NULL;
}
}
u8 * GuiImageData::GetImage()
{
return data;
}
int GuiImageData::GetWidth()
{
return width;
}
int GuiImageData::GetHeight()
{
return height;
}
void GuiImageData::SetGrayscale( void )
{
GXColor color;
u32 offset, gray;
for ( int x = 0; x < width; x++ )
{
for ( int y = 0; y < height; y++ )
{
offset = ( ( ( y >> 2 ) << 4 ) * width ) + ( ( x >> 2 ) << 6 ) + ( ( ( y % 4 << 2 ) + x % 4 ) << 1 );
color.r = *( data + offset + 1 );
color.g = *( data + offset + 32 );
color.b = *( data + offset + 33 );
gray = ( 77 * color.r + 150 * color.g + 28 * color.b ) / 255;
*( data + offset + 1 ) = gray;
*( data + offset + 32 ) = gray;
*( data + offset + 33 ) = gray;
}
}
}
// This function finds it's origin in GRRLIB, which can be found here: http://code.google.com/p/grrlib/
void GuiImageData::LoadJpeg( const u8 *img, int imgSize )
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
int n = imgSize;
while ( n > 1 )
{
if ( img[n - 1] == 0xff && img[n] == 0xd9 )
{
break;
}
n--;
}
jpeg_create_decompress( &cinfo );
cinfo.err = jpeg_std_error( &jerr );
cinfo.progress = NULL;
jpeg_mem_src( &cinfo, ( u8 * ) img, n );
jpeg_read_header( &cinfo, TRUE );
jpeg_calc_output_dimensions( &cinfo );
if ( cinfo.output_width > new_width || cinfo.output_height > new_height )
{
float factor = ( cinfo.output_width > cinfo.output_height ) ? ( 1.0 * cinfo.output_width ) / new_width : ( 1.0 * cinfo.output_height ) / new_height;
cinfo.scale_num = 1;
cinfo.scale_denom = factor;
cinfo.do_fancy_upsampling = true;
cinfo.do_block_smoothing = false;
cinfo.dct_method = JDCT_IFAST;
}
jpeg_start_decompress( &cinfo );
int rowsize = cinfo.output_width * cinfo.num_components;
unsigned char *tempBuffer = ( unsigned char * ) malloc( rowsize * cinfo.output_height );
JSAMPROW row_pointer[1];
row_pointer[0] = ( unsigned char* ) malloc( rowsize );
size_t location = 0;
while ( cinfo.output_scanline < cinfo.output_height )
{
jpeg_read_scanlines( &cinfo, row_pointer, 1 );
memcpy( tempBuffer + location, row_pointer[0], rowsize );
location += rowsize;
}
int len = ( ( cinfo.output_width + 3 ) >> 2 ) * ( ( cinfo.output_height + 3 ) >> 2 ) * 32 * 2;
data = ( u8 * ) memalign( 32, len );
RawTo4x4RGBA( tempBuffer, data, cinfo.output_width, cinfo.output_height );
DCFlushRange( data, len );
width = cinfo.output_width;
height = cinfo.output_height;
jpeg_finish_decompress( &cinfo );
jpeg_destroy_decompress( &cinfo );
free( row_pointer[0] );
free( tempBuffer );
}
/**
* Convert a raw bmp (RGB, no alpha) to 4x4RGBA.
* @author DragonMinded
* @param src
* @param dst
* @param width
* @param height
*/
void GuiImageData::RawTo4x4RGBA( const unsigned char *src, void *dst, const unsigned int width, const unsigned int height )
{
unsigned int block;
unsigned int i;
unsigned int c;
unsigned int ar;
unsigned int gb;
unsigned char *p = ( unsigned char* )dst;
for ( block = 0; block < height; block += 4 )
{
for ( i = 0; i < width; i += 4 )
{
/* Alpha and Red */
for ( c = 0; c < 4; ++c )
{
for ( ar = 0; ar < 4; ++ar )
{
/* Alpha pixels */
*p++ = 255;
/* Red pixels */
*p++ = src[( ( i + ar ) + ( ( block + c ) * width ) ) * 3];
}
}
/* Green and Blue */
for ( c = 0; c < 4; ++c )
{
for ( gb = 0; gb < 4; ++gb )
{
/* Green pixels */
*p++ = src[( ( ( i + gb ) + ( ( block + c ) * width ) ) * 3 ) + 1];
/* Blue pixels */
*p++ = src[( ( ( i + gb ) + ( ( block + c ) * width ) ) * 3 ) + 2];
}
}
} /* i */
} /* block */
}
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