mpv/Gui/bitmap.c

160 lines
3.7 KiB
C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bitmap.h"
int conv24to32( txSample * bf )
{
unsigned char * tmpImage;
int i,c;
if ( bf->BPP == 24 )
{
tmpImage=bf->Image;
bf->ImageSize=bf->Width * bf->Height * 4;
bf->BPP=32;
if ( ( bf->Image=malloc( bf->ImageSize ) ) == NULL )
{
mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[bitmap] Not enough memory for image.\n" );
return 1;
}
memset( bf->Image,0,bf->ImageSize );
for ( c=0,i=0;i < (int)(bf->Width * bf->Height * 3); )
{
#ifndef WORDS_BIGENDIAN
bf->Image[c++]=tmpImage[i++]; //red
bf->Image[c++]=tmpImage[i++]; //green
bf->Image[c++]=tmpImage[i++]; c++; //blue
#else
unsigned char t=tmpImage[i++];
bf->Image[c++]=tmpImage[i++]; //green
bf->Image[c++]=t; c++; //red
bf->Image[c++]=tmpImage[i++]; //blue
#endif
}
free( tmpImage );
}
return 0;
}
void bgr2rgb( txSample * bf )
{
unsigned char c;
int i;
for ( i=0;i < (int)bf->ImageSize;i+=4 )
{
c=bf->Image[i];
bf->Image[i]=bf->Image[i+2];
bf->Image[i+2]=c;
}
}
void Normalize( txSample * bf )
{
int i;
#ifndef WORDS_BIGENDIAN
for ( i=0;i < (int)bf->ImageSize;i+=4 ) bf->Image[i+3]=0;
#else
for ( i=0;i < (int)bf->ImageSize;i+=4 ) bf->Image[i]=0;
#endif
}
unsigned char tmp[512];
unsigned char * fExist( unsigned char * fname )
{
FILE * fl;
unsigned char ext[][6] = { ".png\0",".PNG\0" };
int i;
fl=fopen( fname,"rb" );
if ( fl != NULL )
{
fclose( fl );
return fname;
}
for ( i=0;i<2;i++ )
{
sprintf( tmp,"%s%s",fname,ext[i] );
fl=fopen( tmp,"rb" );
if ( fl != NULL )
{
fclose( fl );
return tmp;
}
}
return NULL;
}
int bpRead( char * fname, txSample * bf )
{
fname=fExist( fname );
if ( fname == NULL ) return -2;
if ( pngRead( fname,bf ) )
{
mp_dbg( MSGT_GPLAYER,MSGL_FATAL,"[bitmap] Unknown file type ( %s ).\n",fname );
return -5;
}
if ( bf->BPP < 24 )
{
mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[bitmap] sorry, 16 or less bitmaps not supported.\n" );
return -1;
}
if ( conv24to32( bf ) ) return -8;
bgr2rgb( bf );
Normalize( bf );
return 0;
}
void Convert32to1( txSample * in,txSample * out,int adaptivlimit )
{
out->Width=in->Width;
out->Height=in->Height;
out->BPP=1;
out->ImageSize=out->Width * out->Height / 8;
mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[c1to32] imagesize: %d\n",out->ImageSize );
out->Image=(char *)calloc( 1,out->ImageSize );
if ( out->Image == NULL ) mp_msg( MSGT_GPLAYER,MSGL_STATUS,"nem van ram baze\n" );
{
int i,b,c=0; unsigned int * buf = NULL; unsigned char tmp = 0; int nothaveshape = 1;
buf=(unsigned int *)in->Image;
for ( b=0,i=0;i < (int)(out->Width * out->Height);i++ )
{
if ( (int)buf[i] != adaptivlimit ) tmp=( tmp >> 1 )|128;
else { tmp=tmp >> 1; buf[i]=nothaveshape=0; }
if ( b++ == 7 ) { out->Image[c++]=tmp; tmp=b=0; }
}
if ( b ) out->Image[c]=tmp;
if ( nothaveshape ) { free( out->Image ); out->Image=NULL; }
}
}
void Convert1to32( txSample * in,txSample * out )
{
if ( in->Image == NULL ) return;
out->Width=in->Width;
out->Height=in->Height;
out->BPP=32;
out->ImageSize=out->Width * out->Height * 4;
out->Image=(char *)calloc( 1,out->ImageSize );
mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[c32to1] imagesize: %d\n",out->ImageSize );
if ( out->Image == NULL ) mp_msg( MSGT_GPLAYER,MSGL_STATUS,"nem van ram baze\n" );
{
int i,b,c=0; unsigned int * buf = NULL; unsigned char tmp = 0;
buf=(unsigned int *)out->Image;
for ( c=0,i=0;i < (int)(in->Width * in->Height / 8);i++ )
{
tmp=in->Image[i];
for ( b=0;b<8;b++ )
{
buf[c]=0;
if ( tmp&0x1 ) buf[c]=0xffffffff;
c++; tmp=tmp>>1;
}
}
}
}