mirror of https://github.com/mpv-player/mpv
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
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#ifndef __MY_BMP
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#define __MY_BMP
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/*
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0.1 : BMP type.
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2.5 : File size.
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6.7 : Res.
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8.9 : Res.
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10.13 : Offset of bitmap.
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14.17 : Header size.
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18.21 : X size.
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22.25 : Y size.
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26.27 : Number of planes.
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28.29 : Number of bits per pixel.
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30.33 : Compression flag.
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34.37 : Image data size in bytes.
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38.41 : Res
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42.45 : Res
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46.49 : Res
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50.53 : Res
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include "bmp.h"
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#include "../bitmap.h"
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#include "../../error.h"
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int bmpRead( unsigned char * fname,txSample * bF )
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{
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unsigned char bmpHeader[54];
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FILE * BMP;
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unsigned long i;
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unsigned char * line;
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int linesize;
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if ( (BMP=fopen( fname,"rt" )) == NULL )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bmp] File not found ( %s ).\n",fname );
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#endif
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return 1;
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}
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if ( (i=fread( bmpHeader,54,1,BMP )) != 1 )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bmp] Header read error ( %s ).\n",fname );
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#endif
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return 2;
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}
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// memcpy( &bF->Size,&bmpHeader[2],4 );
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memcpy( &bF->Width,&bmpHeader[18],4 );
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memcpy( &bF->Height,&bmpHeader[22],4 );
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memcpy( &bF->BPP,&bmpHeader[28],2 );
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// memcpy( &bF->ImageSize,&bmpHeader[34],4 );
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bF->ImageSize=( bF->Width * bF->Height ) * ( bF->BPP / 8 );
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if ( bF->BPP < 24 )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bmp] Sorry, this loader not supported 16 bit or less ...\n" );
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#endif
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return 3;
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}
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#ifdef DEBUG
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dbprintf( 4,"[bmp] filename: %s\n",fname );
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dbprintf( 4,"[bmp] size: %dx%d bits: %d\n",bF->Width,bF->Height,bF->BPP );
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dbprintf( 4,"[bmp] imagesize: %lu\n",bF->ImageSize );
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#endif
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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,"[bmp] Not enough memory for image buffer.\n" );
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#endif
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return 4;
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}
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if ( (i=fread( bF->Image,bF->ImageSize,1,BMP )) != 1 )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bmp] Image read error.\n" );
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#endif
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return 5;
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}
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fclose( BMP );
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linesize=bF->Width * ( bF->BPP / 8 );
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if ( (line=malloc( linesize )) == NULL )
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{
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#ifdef DEBUG
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dbprintf( 4,"[bmp] Not enough memory for flipping.\n" );
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#endif
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return 6;
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}
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for ( i=0;i < bF->Height / 2;i++ )
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{
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memcpy( line,&bF->Image[ i * linesize ],linesize );
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memcpy( &bF->Image[ i * linesize ],&bF->Image[ ( bF->Height - i - 1 ) * linesize ],linesize );
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memcpy( &bF->Image[ ( bF->Height - i - 1 ) * linesize ],line,linesize );
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}
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free( line );
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return 0;
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}
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#endif |