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