aboutsummaryrefslogtreecommitdiffhomepage
path: root/Gui/bitmap.c
blob: afb20d1d2c98e5da06ebd147d05d533afb18e143 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include <png.h>

#include "../../mp_msg.h"
#include "bitmap.h"

int pngRead( unsigned char * fname,txSample * bf )
{
 unsigned char   header[8];
 png_structp     png;
 png_infop       info;
 png_infop       endinfo;
 png_bytep     * row_p;
 png_bytep       palette = NULL;
 int             color;
 png_uint_32     i;
 
 FILE *fp=fopen( fname,"rb" );
 if ( !fp ) 
  {
   mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] file read error ( %s ).\n",fname );
   return 1;
  }

 fread( header,1,8,fp );
 if ( !png_check_sig( header,8 ) ) return 1;

 png=png_create_read_struct( PNG_LIBPNG_VER_STRING,NULL,NULL,NULL );
 info=png_create_info_struct( png );
 endinfo=png_create_info_struct( png );

 png_init_io( png,fp );
 png_set_sig_bytes( png,8 );
 png_read_info( png,info );
 png_get_IHDR( png,info,&bf->Width,&bf->Height,&bf->BPP,&color,NULL,NULL,NULL );

 row_p=(png_bytep *)malloc( sizeof( png_bytep ) * bf->Height );
 if ( !row_p )
  {
   mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png]  Not enough memory for row buffer.\n" );
   return 2;
  }
 bf->Image=(png_bytep)malloc( png_get_rowbytes( png,info ) * bf->Height );
 if ( !bf->Image )
  {
   mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png]  Not enough memory for image buffer.\n" );
   return 2;
  }
 for ( i=0; i < bf->Height; i++ ) row_p[i]=&bf->Image[png_get_rowbytes( png,info ) * i];

 png_read_image( png,row_p );
 free( row_p );

#if 0
 if ( color == PNG_COLOR_TYPE_PALETTE )
  {
   int cols;
   png_get_PLTE( png,info,(png_colorp *)&palette,&cols );
  }
#endif

 if ( color&PNG_COLOR_MASK_ALPHA )
  {
   if ( color&PNG_COLOR_MASK_PALETTE || color == PNG_COLOR_TYPE_GRAY_ALPHA ) bf->BPP*=2;
     else bf->BPP*=4;
  }
  else
   {
    if ( color&PNG_COLOR_MASK_PALETTE || color == PNG_COLOR_TYPE_GRAY ) bf->BPP*=1;
      else bf->BPP*=3;
   }

 png_read_end( png,endinfo );
 png_destroy_read_struct( &png,&info,&endinfo );

 if ( fclose( fp ) != 0 )
  {
   free( bf->Image );
   free( palette );
   return 1;
  }
 bf->ImageSize=bf->Width * bf->Height * ( bf->BPP / 8 );

 mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png] filename: %s.\n",fname );
 mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png]  size: %dx%d bits: %d\n",bf->Width,bf->Height,bf->BPP );
 mp_dbg( MSGT_GPLAYER,MSGL_DBG2,"[png]  imagesize: %lu\n",bf->ImageSize );
 return 0;
}

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 + 7) / 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;
     }
   }
 }
}