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unpack zips in src to better compression

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zwangseinweisung
2022-10-20 13:28:49 +02:00
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13
sources/z-tools/trunk/zview/plugins/img/Makefile Normal file
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STACKSIZE = 64k
OPTIMISATION = -O2 -fomit-frame-pointer -finline-functions
CPU = -m68020-60
LIB = -lldgserver
CFLAGS = $(CPU) $(OPTIMISATION) -Wall -I../common
LDFLAGS = -nostdlib
OBJ = $(LDG_STARTUP_OBJ) imgldg.o xp32.o
PROGRAM = img.ldg
include ../../../common.mak

503
sources/z-tools/trunk/zview/plugins/img/copyright Normal file
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sources/z-tools/trunk/zview/plugins/img/img.h Normal file
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/*------------------------------------------*/
/* IMG Structur */
/*------------------------------------------*/
#ifndef __IMG_IMAGE__
#define __IMG_IMAGE__
#define XIMG 0x58494D47
typedef struct
{
int16 version;
int16 length;
int16 planes;
int16 pattern_length;
int16 pix_width;
int16 pix_height;
int16 w;
int16 h;
} IMGHDR;
#endif
typedef struct
{
uint8 *img_buf;
int32 img_buf_len;
int32 img_buf_offset;
int32 img_buf_used;
uint8 *line_buffer;
int16 pat_len;
int16 line_len;
int32 rest_length;
int32 file_length;
int16 img_buf_valid;
} XIMG_DATA;
#ifndef __PIC_STRUCT__
#define __PIC_STRUCT__
typedef struct
{
uint8 red, green, blue;
}RGB;
typedef struct _picture
{
int16 file_handle;
int16 width;
int16 height;
int16 planes;
IMGHDR img;
XIMG_DATA info;
} IMG_REF;
#endif

365
sources/z-tools/trunk/zview/plugins/img/imgldg.c Normal file
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#include "zview.h"
#include "img.h"
extern int32 plane2packed24( int32 no_words, int32 plane_length, int16 no_planes, void *src, void *dst, COLOR_MAP *palette);
boolean CDECL reader_init( const char *name, IMGINFO info);
void CDECL reader_get_txt( IMGINFO info, txt_data *txtdata);
boolean CDECL reader_read( IMGINFO info, uint8 *buffer);
void CDECL reader_quit( IMGINFO info);
void CDECL init( void);
PROC IMGFunc[] =
{
{ "plugin_init", "", init},
{ "reader_init", "", reader_init},
{ "reader_get_txt", "", reader_get_txt},
{ "reader_read", "", reader_read},
{ "reader_quit", "", reader_quit}
};
LDGLIB img_plugin =
{
0x0200, /* Plugin version */
5, /* Number of plugin's functions */
IMGFunc, /* List of functions */
"IMG", /* File's type Handled */
LDG_NOT_SHARED, /* The flags NOT_SHARED is used here.. even if zview plugins are reentrant
and are shareable, we must use this flags because we don't know if the
user has ldg.prg deamon installed on his computer */
NULL, /* Function called when the plugin is unloaded */
1L /* Howmany file type are supported by this plugin */
};
boolean CDECL reader_init( const char *name, IMGINFO info)
{
IMG_REF *pic = NULL;
IMGHDR *head = NULL;
XIMG_DATA *imginfo = NULL;
int16 handle, line_width;
int8 identify[6];
if ( ( handle = ( int16) Fopen( name, 0)) < 0)
return FALSE;
pic = ( IMG_REF*)malloc( sizeof( IMG_REF));
head = &pic->img;
imginfo = &pic->info;
if( pic == NULL)
{
Fclose( handle);
return FALSE;
}
if ( Fread( handle, sizeof( IMGHDR), head) != sizeof( IMGHDR))
{
free( pic);
return FALSE;
}
if (( head->planes != 1) && ( head->planes != 4) && ( head->planes != 8) && ( head->planes != 24))
{
free( pic);
Fclose( handle);
return FALSE;
}
pic->file_handle = handle;
pic->width = head->w;
pic->height = head->h;
pic->planes = head->planes;
line_width = ((( head->w + 15) & 0xfff0) >> 3 ) * head->planes;
imginfo->pat_len = head->pattern_length;
imginfo->line_len = ( head->w + 7) >> 3;
imginfo->file_length = Fseek( 0L, handle, 2);
imginfo->img_buf_len = MAX( 8192, line_width << 1);
imginfo->img_buf = ( uint8*)malloc( imginfo->img_buf_len + 256L);
if ( imginfo->img_buf == NULL)
{
free( pic);
Fclose( handle);
return FALSE;
}
/* Normally, here, it's the size of the line that we allocate but we prevent buffer
Overflow with some picture saved with french application */
imginfo->line_buffer = ( uint8*)malloc( imginfo->img_buf_len + 256L);
imginfo->img_buf_valid = 0;
if ( imginfo->line_buffer == NULL)
{
free( imginfo->img_buf);
free( pic);
Fclose( handle);
return FALSE;
}
info->real_width = info->width = pic->width;
info->real_height = info->height= pic->height;
info->components = ( pic->planes == 1 ? 1 : 3);
info->planes = pic->planes;
info->orientation = UP_TO_DOWN;
info->colors = 1L << ( uint32)pic->planes;
info->indexed_color = FALSE; /* ( (( pic->planes == 1) || ( pic->planes > 8)) ? 0 : 1); */
info->memory_alloc = TT_RAM;
info->page = 1;
info->delay = 0;
info->num_comments = 0;
info->_priv_ptr = ( void*)pic;
strcpy( info->info, "GEM Bitmap ");
strcpy( info->compression, "RLE");
/* It a extended IMG ?, if not, return */
if(( head->length <= ( sizeof( IMGHDR) >> 1)) || ( info->planes > 8))
return TRUE;
strcat( info->info, "( eXtended)");
Fseek( sizeof( IMGHDR), handle, 0);
Fread( handle, 6, identify);
if( strcmp ( identify, "XIMG") != 0)
{
free( imginfo->line_buffer);
free( imginfo->img_buf);
free( pic);
Fclose( handle);
return FALSE;
}
else
{
RGB1000 palette[256];
register int32 pal_len;
register int16 i;
pal_len = MIN ((( head->length << 1) - 6 - sizeof( IMGHDR)), ( sizeof( RGB1000) << 8));
Fread( handle, pal_len, palette);
for ( i = 0; i < info->colors; i++)
{
register int32 intensity = ( int32)palette[i].blue;
info->palette[i].blue = ( uint8) (((( intensity << 8) - intensity) + 500) / 1000L);
intensity = ( int32)palette[i].green;
info->palette[i].green = ( uint8) (((( intensity << 8) - intensity) + 500) / 1000L);
intensity = ( int32)palette[i].red;
info->palette[i].red = ( uint8) (((( intensity << 8) - intensity) + 500) / 1000L);
}
}
return TRUE;
}
void fill_img_buf( IMG_REF *pic)
{
XIMG_DATA *info = &pic->info;
int32 read = info->img_buf_len;
if ( read > info->rest_length)
read = info->rest_length;
info->img_buf_offset = 0;
info->img_buf_used = Fread( pic->file_handle, read, info->img_buf );
info->rest_length -= info->img_buf_used;
}
void refill_img_buf( IMG_REF *pic, int32 read)
{
XIMG_DATA *info = &pic->info;
info->img_buf_used -= read;
info->img_buf_offset += read;
if ( info->img_buf_offset >= ( info->img_buf_len >> 1))
{
if ( info->img_buf_used > 0)
memcpy( info->img_buf, info->img_buf + info->img_buf_offset, info->img_buf_used);
read = info->img_buf_offset;
if ( read > info->rest_length )
read = info->rest_length;
read = Fread( pic->file_handle, read, info->img_buf + info->img_buf_used );
info->img_buf_used += read;
info->img_buf_offset = 0;
info->rest_length -= read;
}
}
uint8 *unpack_line2( uint8 *img, uint8 *des, int16 pat_len, int16 len)
{
register int16 i, cnt;
while ( len > 0)
{
register uint8 tag = *img++;
if ( tag == 0)
{
cnt = *img++;
for ( i = 0; i < cnt; i++)
{
register int16 j;
for ( j = 0; j < pat_len; j++)
*des++ = img[j];
}
img += pat_len;
cnt *= pat_len;
}
else if ( tag == 0x80 )
{
cnt = *img++;
for ( i = 0; i < cnt; i++)
*des++ = *img++;
}
else if (( tag & 0x80 ) == 0)
{
cnt = tag & 0x7f;
for ( i = 0; i < cnt; i++)
*des++ = 0;
}
else
{
cnt = tag & 0x7f;
for ( i = 0; i < cnt; i++)
*des++ = 0xff;
}
len -= cnt;
}
return( img);
}
uint8 *unpack_line1( uint8 *img, uint8 *des, int16 pat_len, int16 len)
{
if (( img[0] == 0 ) && ( img[1] == 0 ) && ( img[2] == 0xff))
{
if ( img[3] > 1)
{
unpack_line2( img + 4, des, pat_len, len);
img[3] -= 1;
return( img);
}
else
return( unpack_line2( img + 4, des, pat_len, len));
}
else
return( unpack_line2( img, des, pat_len, len));
}
void unpack_line( IMG_REF *pic, uint8 *des)
{
XIMG_DATA *info = &pic->info;
uint8 *img_line;
int32 read;
img_line = info->img_buf + info->img_buf_offset;
read = ( int32) ( unpack_line1( img_line, des, info->pat_len, info->line_len * pic->planes ) - img_line );
refill_img_buf( pic, read);
}
boolean CDECL reader_read( IMGINFO info, uint8 *buffer)
{
int16 even_len;
IMG_REF *pic = ( IMG_REF *)info->_priv_ptr;
XIMG_DATA *img_info = &pic->info;
IMGHDR *head = &pic->img;
if ( img_info->img_buf_valid == 0)
{
Fseek( head->length << 1, pic->file_handle, 0);
img_info->rest_length = img_info->file_length - ( head->length << 1);
fill_img_buf( pic);
img_info->img_buf_valid = 1;
}
if( info->planes > 8)
{
unpack_line( pic, buffer);
return TRUE;
}
even_len = ( img_info->line_len + 1) & ~1;
unpack_line( pic, img_info->line_buffer);
if ( img_info->line_len & 1)
{
uint8 *odd, *even;
int16 i;
odd = img_info->line_buffer + ( img_info->line_len * head->planes);
even = odd + head->planes;
for ( i = 0; i < head->planes; i++)
{
*( --even) = 0;
odd -= img_info->line_len;
even -= img_info->line_len;
memcpy( even, odd, img_info->line_len);
}
}
if( !plane2packed24( even_len >> 1, even_len, head->planes, img_info->line_buffer, buffer, info->palette))
return FALSE;
return TRUE;
}
void CDECL reader_get_txt( IMGINFO info, txt_data *txtdata)
{
return;
}
void CDECL reader_quit( IMGINFO info)
{
IMG_REF *pic = ( IMG_REF *)info->_priv_ptr;
if ( pic)
{
Fclose( pic->file_handle );
free( pic->info.img_buf);
free( pic->info.line_buffer);
free( pic);
}
}
void CDECL init( void)
{
return;
}
int main( void)
{
ldg_init( &img_plugin);
return( 0);
}

166
sources/z-tools/trunk/zview/plugins/img/xp32.S Normal file
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@@ -0,0 +1,166 @@
.text
.globl _plane2packed24
| int32 plane2packed24( int32 no_words, int32 plane_length, int16 no_planes, void *src, void *dst, CTAB_REF src_ctab );
| d0 d1 d2 a0 a1 4(sp)
| 11x4 + 4 + 5x4
_plane2packed24:
movem.l d2-d7/a2-a6,-(sp)
move.l 11*4+4(sp),d0
move.l 11*4+8(sp),d1
move.l 11*4+12(sp),d2
movea.l 11*4+16(sp),a0
movea.l 11*4+20(sp),a1
movea.l 11*4+24(sp),a6 |source of the color table
move.l d0,d4
subq.l #1,d4
move.l d1,d6
add.l d6,d6
add.l d6,d6
movea.l a1,a4 |destination's adress to A4
lea (a0,d1.l),a1
lea (a1,d1.l),a2
lea (a2,d1.l),a3
lea not_supported(pc),a5
cmpi.w #8,d2
bhi.s plane2packed24_transform
lea plane2packed24_table(pc),a5
add.w d2,d2
adda.w 0(a5,d2.w),a5
plane2packed24_transform:
jsr (a5)
movem.l (sp)+,d2-d7/a2-a6
rts
plane2packed24_table:
DC.w not_supported-plane2packed24_table
DC.w pp_1_to_8-plane2packed24_table |1 Bit
DC.w not_supported-plane2packed24_table
DC.w not_supported-plane2packed24_table
DC.w pp_4_to_24-plane2packed24_table |4 Bit
DC.w not_supported-plane2packed24_table
DC.w not_supported-plane2packed24_table
DC.w not_supported-plane2packed24_table
DC.w pp_8_to_24-plane2packed24_table |8 Bit
not_supported:
moveq #0,d0
rts
pp_1_to_8:
move.w (a0)+,d0
moveq #15,d5
pp_1_to_8_exp:
moveq #0,d6
add.w d0,d0
addx.l d6,d6
move.b d6,(a4)+
dbra d5,pp_1_to_8_exp
subq.l #1,d4
bpl.b pp_1_to_8
moveq #1,d0
rts
pp_4_to_24: move.w (a0)+,d0
move.w (a1)+,d1
move.w (a2)+,d2
move.w (a3)+,d3
moveq #15,d5
pp_4_to_24_exp: moveq #0,d6
add.w d3,d3
addx.w d6,d6
add.w d2,d2
addx.w d6,d6
add.w d1,d1
addx.w d6,d6
add.w d0,d0
addx.w d6,d6
lsl.w #2,d6
lea (a6,d6.w),a5
move.b (a5),(a4)+ |R
move.b 1(a5),(a4)+ |G
move.b 2(a5),(a4)+ |B
pp_4_to_24_next: dbra d5,pp_4_to_24_exp
subq.l #1,d4
bpl.b pp_4_to_24
moveq #1,d0
rts
pp_8_to_24: move.l d4,-(sp)
move.l d6,-(sp)
move.w (a0)+,d0
move.w (a1)+,d1
move.w (a2)+,d2
move.w (a3)+,d3
move.w -2(a0,d6.l),d4
move.w -2(a1,d6.l),d5
move.w -2(a3,d6.l),d7
move.w -2(a2,d6.l),d6
swap d0
swap d5
move.w #15,d5
pp_8_to_24_exp: swap d5
clr.w d0
add.w d7,d7
addx.w d0,d0
add.w d6,d6
addx.w d0,d0
add.w d5,d5
addx.w d0,d0
add.w d4,d4
addx.w d0,d0
add.w d3,d3
addx.w d0,d0
add.w d2,d2
addx.w d0,d0
add.w d1,d1
addx.w d0,d0
swap d0
add.w d0,d0
swap d0
addx.w d0,d0
lsl.w #2,d0
lea (a6,d0.w),a5
move.b (a5),(a4)+ |R
move.b 1(a5),(a4)+ |G
move.b 2(a5),(a4)+ |B
swap d5
dbra d5,pp_8_to_24_exp
move.l (sp)+,d6
move.l (sp)+,d4
subq.l #1,d4
bpl.b pp_8_to_24
moveq #1,d0
rts