mirror of https://github.com/mpv-player/mpv
175 lines
3.5 KiB
C
175 lines
3.5 KiB
C
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#include <stdlib.h>
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#include <stdio.h>
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#include "bitmap.h"
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#include "../error.h"
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#define BMP 1
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#define TGA 2
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#define PNG 3
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#define TGAPACKED 4
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extern char * strcat( char * dest,const char * src );
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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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#ifdef DEBUG
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dbprintf( 4,"[bitmap] Not enough memory for image.\n" );
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#endif
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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 < bf->Width * bf->Height * 3; )
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{
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bf->Image[c++]=tmpImage[i++];
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bf->Image[c++]=tmpImage[i++];
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bf->Image[c++]=tmpImage[i++]; c++;
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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 < 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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for ( i=0;i < bf->ImageSize;i+=4 ) bf->Image[i+3]=0;
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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] = { ".tga\0",".TGA\0",".png\0",".PNG\0",".bmp\0",".BMP\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<10;i++ )
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{
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strcpy( tmp,fname );
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strcat( tmp,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 aComp( unsigned char * b1,unsigned char * b2,int size )
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{
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int i;
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for( i=0;i<size;i++ ) if ( b1[i] != b2[i] ) return 0;
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return 1;
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}
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int GetFileType( char * fname )
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{
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FILE * fl;
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unsigned char buffer[10];
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unsigned char bmp[2] = { 0x42,0x4d };
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unsigned char tga[7] = { 0x00,0x02,0x00,0x00,0x00,0x00,0x00 };
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unsigned char ptga[7] = { 0x00,0x0a,0x00,0x00,0x00,0x00,0x00 };
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unsigned char png[8] = { 0x89,0x50,0x4e,0x47,0x0d,0x0a,0x1a,0x0a };
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if ( ( fl=fopen( fname,"rb" ) ) == NULL ) return -1;
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fread( buffer,1,10,fl );
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fclose( fl );
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if ( aComp( buffer,bmp,2 ) ) return BMP; // --- bmp
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if ( aComp( &buffer[1],tga,8 ) ) return TGA; // --- tga
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if ( aComp( &buffer[1],ptga,7 ) ) return TGAPACKED; // --- tga
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if ( aComp( buffer,png,8 ) ) return PNG; // --- png
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return 0; // --- others
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}
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int bpRead( char * fname, txSample * bf )
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{
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int bgr = 0;
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int i;
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fname=fExist( fname );
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if ( fname == NULL ) return -2;
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switch ( GetFileType( fname ) )
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{
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case BMP:
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i=bmpRead( fname,bf );
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switch ( i )
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{
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case 0: break;
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case 3: return -1;
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default: return -3;
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}
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break;
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case TGA:
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i=tgaRead( fname,bf );
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switch ( i )
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{
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case 0: break;
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case 3: return -1;
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default: return -4;
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}
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break;
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case PNG:
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if ( pngRead( fname,bf ) ) return -5;
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bgr=1;
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break;
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case TGAPACKED:
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#ifdef DEBUG
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dbprintf( 4,"[bitmap] sorry, packed TGA not supported.\n" );
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#endif
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return -6;
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default:
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{
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#ifdef DEBUG
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dbprintf( 4,"[bitmap] Unknown file type ( %s ).\n",fname );
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#endif
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return -7;
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}
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}
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if ( bf->BPP < 24 )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bitmap] sorry, 16 or less bitmaps not supported.\n" );
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#endif
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return -1;
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}
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if ( conv24to32( bf ) ) return -8;
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if ( bgr ) bgr2rgb( bf );
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Normalize( bf );
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return 0;
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}
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