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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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sources/z-tools/trunk/zview/plugins/jpg/Makefile Normal file
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STACKSIZE = 64k
OPTIMISATION = -O2 -fomit-frame-pointer
CPU = -m68020-60
LIB = -ljpeg -lexif -lldgserver
CFLAGS = $(CPU) $(OPTIMISATION) -Wall -I../common
LDFLAGS = -nostdlib
DSP_OBJ = jpgdsp.o
OBJ = $(LDG_STARTUP_OBJ) $(DSP_OBJ) jpgldg.o
PROGRAM = jpg.ldg
include ../../../common.mak

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/* JPEGD header file
<09>1992-93 Brainstorm & Atari Corporation.
to be included after vdi.h
Last modification on 8-apr-1993.
*/
typedef struct _JPGD_STRUCT {
void *InPointer; /* JPEG Image Pointer */
void *OutPointer; /* Output Buffer/Filename Pointer (see OutFlag) */
long InSize; /* JPEG Image Size (Bytes) */
long OutSize; /* Output Image Size (Bytes) */
short InComponents; /* JPEG Image Components Number (1->4) */
short OutComponents; /* Output Components Number (1->4) */
short OutPixelSize; /* Output Pixel Size (1->4) */
short OutFlag; /* 0 (RAM Output) / -1 (Disk Output) */
short XLoopCounter; /* Number of MCUs per Row */
short YLoopCounter; /* Number of MCUs per Column */
short (*Create)(struct _JPGD_STRUCT *); /* Pointer to User Routine / NULL */
short (*Write)(struct _JPGD_STRUCT *); /* Pointer to User Routine / NULL */
short (*Close)(struct _JPGD_STRUCT *); /* Pointer to User Routine / NULL */
short (*SigTerm)(struct _JPGD_STRUCT *); /* Pointer to User Routine / NULL */
uint8 *Comp1GammaPtr; /* Component 1 Gamma Table / NULL */
uint8 *Comp2GammaPtr; /* Component 2 Gamma Table / NULL */
uint8 *Comp3GammaPtr; /* Component 3 Gamma Table / NULL */
uint8 *Comp4GammaPtr; /* Component 4 Gamma Table / NULL */
short (*UserRoutine)(struct _JPGD_STRUCT *); /* Pointer to User Routine (Called during Decompression) / NULL */
void *OutTmpPointer; /* Current OutPointer / Temporary Disk Buffer Pointer (see OutFlag) */
short MCUsCounter; /* Number of MCUs not Decoded */
short OutTmpHeight; /* Number of Lines in OutTmpPointer */
long User[2]; /* Free, Available for User */
short OutHandle; /* 0 / Output File Handle (see OutFlag) */
MFDB MFDBStruct; /* Output Image MFDB */
} JPGD_STRUCT;
typedef JPGD_STRUCT *JPGD_PTR;
#define JPGD_MAGIC '_JPD'
#define JPGD_VERSION 1
enum JPGD_ENUM {
NOERROR=0, /* File correctly uncompressed */
UNKNOWNFORMAT, /* File is not JFIF (Error) */
INVALIDMARKER, /* Reserved CCITT Marker Found (Error) */
SOF1MARKER, /* Mode not handled by the decoder (Error) */
SOF2MARKER, /* Mode not handled by the decoder (Error) */
SOF3MARKER, /* Mode not handled by the decoder (Error) */
SOF5MARKER, /* Mode not handled by the decoder (Error) */
SOF6MARKER, /* Mode not handled by the decoder (Error) */
SOF7MARKER, /* Mode not handled by the decoder (Error) */
SOF9MARKER, /* Mode not handled by the decoder (Error) */
SOF10MARKER, /* Mode not handled by the decoder (Error) */
SOF11MARKER, /* Mode not handled by the decoder (Error) */
SOF13MARKER, /* Mode not handled by the decoder (Error) */
SOF14MARKER, /* Mode not handled by the decoder (Error) */
SOF15MARKER, /* Mode not handled by the decoder (Error) */
RSTmMARKER, /* Unexpected RSTm found (Error) */
BADDHTMARKER, /* Buggy DHT Marker (Error) */
DACMARKER, /* Marker not handled by the decoder (Error) */
BADDQTMARKER, /* Buggy DQT Marker (Error) */
BADDNLMARKER, /* Invalid/Unexpected DNL Marker (Error) */
BADDRIMARKER, /* Invalid DRI Header Size (Error) */
DHPMARKER, /* Marker not handled by the decoder (Error) */
EXPMARKER, /* Marker not handled by the decoder (Error) */
BADSUBSAMPLING, /* Invalid components subsampling (Error) */
NOTENOUGHMEMORY, /* Not enough memory... (Error) */
DECODERBUSY, /* Decoder is busy (Error) */
DSPBUSY, /* Can't lock the DSP (Error) */
BADSOFnMARKER, /* Buggy SOFn marker (Error) */
BADSOSMARKER, /* Buggy SOS marker (Error) */
HUFFMANERROR, /* Buggy Huffman Stream (Error) */
BADPIXELFORMAT, /* Invalid Output Pixel Format (Error) */
DISKFULL, /* Hard/Floppy Disk Full (Error) */
MISSINGMARKER, /* Marker expected but not found (Error) */
IMAGETRUNCATED, /* More bytes Needed (Error) */
EXTRABYTES, /* Dummy Bytes after EOI Marker (Warning) */
USERABORT, /* User Routine signaled 'Abort' */
DSPMEMORYERROR, /* Not Enough DSP RAM (Error) */
NORSTmMARKER, /* RSTm Marker expected but not found */
BADRSTmMARKER, /* Invalid RSTm Marker Number */
DRIVERCLOSED, /* Driver is Already Closed. */
ENDOFIMAGE /* Stop Decoding (Internal Message, Should Never Appear) */
};
typedef long JPGD_ENUM;
typedef struct {
long JPGDVersion;
JPGD_ENUM (*JPGDOpenDriver)(JPGD_PTR);
JPGD_ENUM (*JPGDCloseDriver)(JPGD_PTR);
long (*JPGDGetStructSize)(void);
JPGD_ENUM (*JPGDGetImageInfo)(JPGD_PTR);
JPGD_ENUM (*JPGDGetImageSize)(JPGD_PTR);
JPGD_ENUM (*JPGDDecodeImage)(JPGD_PTR);
} JPGDDRV_STRUCT;
typedef JPGDDRV_STRUCT *JPGDDRV_PTR;

233
sources/z-tools/trunk/zview/plugins/jpg/jpgdsp.c Normal file
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#include "zview.h"
#include "jpgdh.h"
int16 dsp_ram = 0;
int16 reader_dsp_init( const char *name, IMGINFO info);
JPGDDRV_PTR jpgdrv = NULL;
#define JPGDOpenDriver( jpgd, jpgdrv) \
__extension__ \
({ register int32 retv __asm__("d0"); \
__asm__ volatile \
(" movl %1,a0; \
movl (%2,4),a1; \
jsr a1@; \
" /* end of code */ \
: "=r" (retv) /* out */ \
: "a" (jpgd) /* in */ \
, "a" (jpgdrv) /* in */ \
: "a0", "a1" \
); \
retv; \
})
#define JPGDCloseDriver( jpgd, jpgdrv) \
__extension__ \
({ register int32 retv __asm__("d0"); \
__asm__ volatile \
(" movl %1,a0; \
movl (%2,8),a1; \
jsr a1@; \
" /* end of code */ \
: "=r" (retv) /* out */ \
: "a" (jpgd) /* in */ \
, "a" (jpgdrv) /* in */ \
: "a0", "a1" \
); \
retv; \
})
#define JPGDGetImageInfo( jpgd, jpgdrv) \
__extension__ \
({ register int32 retv __asm__("d0"); \
__asm__ volatile \
(" movl %1,a0; \
movl (%2,16),a1; \
jsr a1@; \
" /* end of code */ \
: "=r" (retv) /* out */ \
: "a" (jpgd) /* in */ \
, "a" (jpgdrv) /* in */ \
: "a0", "a1" \
); \
retv; \
})
#define JPGDGetImageSize( jpgd, jpgdrv) \
__extension__ \
({ register int32 retv __asm__("d0"); \
__asm__ volatile \
(" movl %1,a0; \
movl (%2,20),a1; \
jsr a1@; \
" /* end of code */ \
: "=r" (retv) /* out */ \
: "a" (jpgd) /* in */ \
, "a" (jpgdrv) /* in */ \
: "a0", "a1" \
); \
retv; \
})
#define JPGDDecodeImage( jpgd, jpgdrv) \
__extension__ \
({ register int32 retv __asm__("d0"); \
__asm__ volatile \
(" movl %1,a0; \
movl (%2,24),a1; \
jsr a1@; \
" /* end of code */ \
: "=r" (retv) /* out */ \
: "a" (jpgd) /* in */ \
, "a" (jpgdrv) /* in */ \
: "a0", "a1" \
); \
retv; \
})
/*==================================================================================*
* boolean CDECL reader_init: *
* Open the file "name", fit the "info" struct. ( see zview.h) and make others *
* things needed by the decoder. *
*----------------------------------------------------------------------------------*
* input: *
* name -> The file to open. *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* TRUE if all ok else FALSE. *
*==================================================================================*/
int16 reader_dsp_init( const char *name, IMGINFO info)
{
char pad[] = { -1, -1, -1, -1, -1, -1, -1, -1, 0, 0};
void *src, *dst;
int16 jpeg_file;
int32 jpgdsize, jpeg_file_size;
JPGD_PTR jpgd;
if ( ( jpeg_file = ( int16)Fopen( name, 0)) < 0)
return GOLBAL_ERROR;
jpeg_file_size = Fseek( 0L, jpeg_file, 2);
Fseek( 0L, jpeg_file, 0);
if (( src = ( void*)Mxalloc( jpeg_file_size + sizeof( pad), dsp_ram)) == NULL)
{
Fclose( jpeg_file);
return GOLBAL_ERROR;
}
if ( Fread( jpeg_file, jpeg_file_size, src) != jpeg_file_size)
{
Mfree( src);
Fclose( jpeg_file);
return GOLBAL_ERROR;
}
Fclose( jpeg_file);
memcpy( ( uint8 *)src + jpeg_file_size, pad, sizeof( pad));
jpgdsize = jpgdrv->JPGDGetStructSize();
if( jpgdsize < 1)
{
Mfree( src);
return DSP_ERROR;
}
jpgd = ( JPGD_PTR)Mxalloc( jpgdsize, dsp_ram);
if( jpgd == NULL)
{
Mfree( src);
return GOLBAL_ERROR;
}
memset( ( void *)jpgd, 0, jpgdsize);
if( JPGDOpenDriver( jpgd, jpgdrv) != 0)
{
Dsp_Unlock();
Mfree( jpgd);
Mfree( src);
return DSP_ERROR;
}
jpgd->InPointer = src;
jpgd->InSize = jpeg_file_size;
if( JPGDGetImageInfo( jpgd, jpgdrv) != 0)
{
JPGDCloseDriver( jpgd, jpgdrv);
Dsp_Unlock();
Mfree( jpgd);
Mfree( src);
return DSP_ERROR;
}
jpgd->OutComponents = 3;
jpgd->OutPixelSize = 3;
if( JPGDGetImageSize( jpgd, jpgdrv) != 0)
{
JPGDCloseDriver( jpgd, jpgdrv);
Mfree( jpgd);
Mfree( src);
return DSP_ERROR;
}
if(( dst = ( void*)Mxalloc( jpgd->OutSize, dsp_ram)) == NULL)
{
JPGDCloseDriver( jpgd, jpgdrv);
Mfree( jpgd);
Mfree( src);
return GOLBAL_ERROR;
}
jpgd->OutPointer = dst;
jpgd->OutFlag = 0;
jpgd->UserRoutine = NULL;
if( JPGDDecodeImage( jpgd, jpgdrv) != 0)
{
JPGDCloseDriver( jpgd, jpgdrv);
Mfree( jpgd);
Mfree( src);
Mfree( dst);
return DSP_ERROR;
}
info->components = 3;
info->width = jpgd->MFDBStruct.fd_w;
info->height = jpgd->MFDBStruct.fd_h;
info->real_width = info->width;
info->real_height = info->height;
info->memory_alloc = TT_RAM;
info->planes = 24;
info->orientation = UP_TO_DOWN;
info->colors = 1uL << ( uint32)info->planes;
info->indexed_color = FALSE;
info->page = 1;
info->delay = 0;
info->num_comments = 0;
info->max_comments_length = 0;
info->_priv_ptr = dst;
info->_priv_var = jpgd->MFDBStruct.fd_wdwidth << 1;
info->_priv_var_more = info->_priv_var;
strcpy( info->info, "JPEG");
strcpy( info->compression, "JPG");
JPGDCloseDriver( jpgd, jpgdrv);
Mfree( jpgd);
Mfree( src);
return ALL_OK;
}

813
sources/z-tools/trunk/zview/plugins/jpg/jpgldg.c Normal file
View File

@@ -0,0 +1,813 @@
#include <stdlib.h>
#include <stdio.h>
#include <jpeglib.h>
#include "zview.h"
#include "jpgdh.h"
#include <libexif/exif-data.h>
#include <libexif/exif-utils.h>
void CDECL init( void);
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);
boolean CDECL encoder_init( const char *name, IMGINFO info);
boolean CDECL encoder_write( IMGINFO info, uint8 *buffer);
void CDECL encoder_quit( IMGINFO info);
void CDECL set_jpg_option( int16 set_quality, J_COLOR_SPACE set_color_space, boolean set_progressive);
extern int16 reader_dsp_init( const char *name, IMGINFO info);
PROC LibFunc[] =
{
{ "plugin_init", "", init},
{ "reader_init", "", reader_init},
{ "reader_get_txt", "", reader_get_txt},
{ "reader_read", "", reader_read},
{ "reader_quit", "", reader_quit},
{ "encoder_init", "", encoder_init},
{ "encoder_write", "", encoder_write},
{ "encoder_quit", "", encoder_quit},
{ "set_jpg_option", "", set_jpg_option}
};
LDGLIB plugin =
{
0x0200, /* Plugin version */
9, /* Number of plugin's functions */
LibFunc, /* List of functions */
"JPGJPEPEG", /* File's type Handled */
LDG_NOT_SHARED, /* The flags NOT_SHARED is used here.. */
NULL,
3L /* Howmany file type are supported by this plugin */
};
typedef struct
{
struct jpeg_source_mgr pub; /* public fields */
uint8 *buffer;
int size;
JOCTET terminal[2];
}my_source_mgr;
/* Options*/
static int quality = 90; /* quality 0 -> 100 % */
static J_COLOR_SPACE color_space = JCS_RGB;
static boolean progressive = FALSE;
/* Brainstorm DSP driver cookie pointer */
extern JPGDDRV_PTR jpgdrv;
boolean dsp_decoding = FALSE;
extern int16 dsp_ram;
typedef struct jpeg_decompress_struct *JPEG_DEC;
typedef struct jpeg_error_mgr *JPEG_ERR;
typedef struct jpeg_compress_struct *JPEG_ENC;
typedef my_source_mgr *my_src_ptr;
static void _jpeg_shutup( j_common_ptr cinfo, int msg_level)
{
( void)cinfo;
( void)msg_level;
}
static void _jpeg_errjmp( j_common_ptr cinfo)
{
jmp_buf *escape = cinfo->client_data;
if ( escape)
longjmp( *escape, TRUE);
}
static void init_source (j_decompress_ptr cinfo)
{
}
static boolean fill_input_buffer (j_decompress_ptr cinfo)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
src->pub.next_input_byte = src->terminal;
src->pub.bytes_in_buffer = 2;
src->terminal[0] = (JOCTET) 0xFF;
src->terminal[1] = (JOCTET) JPEG_EOI;
return TRUE;
}
static void skip_input_data( j_decompress_ptr cinfo, long num_bytes)
{
my_src_ptr src = (my_src_ptr) cinfo->src;
src->pub.next_input_byte = src->pub.next_input_byte + num_bytes;
}
static void term_source (j_decompress_ptr cinfo)
{
}
boolean decompress_thumbnail_image( void *source, uint32 size, IMGINFO info)
{
int header = 0;
jmp_buf escape;
JPEG_ERR jerr;
JPEG_DEC jpeg;
my_src_ptr src;
jpeg = ( JPEG_DEC) malloc( sizeof( struct jpeg_decompress_struct));
jerr = ( JPEG_ERR) malloc( sizeof( struct jpeg_error_mgr));
if ( jpeg == NULL || jerr == NULL)
{
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
return FALSE;
}
if( setjmp( escape))
{
if ( header == 2)
jpeg_abort_decompress( jpeg);
jpeg_destroy_decompress( jpeg);
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
return FALSE;
}
jpeg->err = jpeg_std_error( jerr);
jpeg->err->emit_message = _jpeg_shutup;
jpeg->err->error_exit = _jpeg_errjmp;
jpeg->client_data = &escape;
jpeg_create_decompress( jpeg);
if (jpeg->src == NULL)
jpeg->src = (struct jpeg_source_mgr *)(*jpeg->mem->alloc_small)((j_common_ptr)jpeg, JPOOL_PERMANENT, sizeof (my_source_mgr));
src = (my_src_ptr)jpeg->src;
src->pub.init_source = init_source;
src->pub.fill_input_buffer = fill_input_buffer;
src->pub.skip_input_data = skip_input_data;
src->pub.resync_to_restart = jpeg_resync_to_restart;
src->pub.term_source = term_source;
src->pub.bytes_in_buffer = size;
src->pub.next_input_byte = source;
src->buffer = source;
src->size = size;
jpeg_read_header( jpeg, TRUE);
jpeg->dct_method = JDCT_IFAST;
jpeg->do_fancy_upsampling = FALSE;
header = 1;
jpeg_start_decompress( jpeg);
header = 2;
switch( jpeg->out_color_space)
{
case JCS_RGB:
info->components = 3;
break;
case JCS_GRAYSCALE:
info->components = 1;
break;
default:
jpeg->out_color_space = JCS_RGB;
info->components = jpeg->out_color_components = 3;
break;
}
info->width = jpeg->image_width;
info->height = jpeg->image_height;
info->planes = ( ( jpeg->out_color_space == JCS_RGB) ? 24 : 8);
info->colors = 1 << info->planes;
info->_priv_ptr = ( void*)jpeg;
info->_priv_var_more = 1;
info->_priv_var = -1;
jpeg->client_data = NULL;
return TRUE;
}
/*==================================================================================*
* boolean CDECL reader_init: *
* Open the file "name", fit the "info" struct. ( see zview.h) and make others *
* things needed by the decoder. *
*----------------------------------------------------------------------------------*
* input: *
* name -> The file to open. *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* TRUE if all ok else FALSE. *
*==================================================================================*/
boolean CDECL reader_init( const char *name, IMGINFO info)
{
JPEG_ERR jerr;
JPEG_DEC jpeg;
jpeg_saved_marker_ptr mark;
txt_data *comment;
jmp_buf escape;
FILE* jpeg_file;
int16 header = 0;
/* If Brainstorm cookie is used, we try to decode with it*/
if( jpgdrv)
{
int16 dsp_result = reader_dsp_init( name, info);
switch( dsp_result)
{
case GOLBAL_ERROR:
dsp_decoding = FALSE;
return FALSE;
case DSP_ERROR:
case PROGRESSIVE_JPG:
dsp_decoding = FALSE;
break;
case ALL_OK:
dsp_decoding = TRUE;
return TRUE;
}
}
if ( ( jpeg_file = fopen( name, "rb")) == NULL)
return FALSE;
jpeg = ( JPEG_DEC) malloc( sizeof( struct jpeg_decompress_struct));
jerr = ( JPEG_ERR) malloc( sizeof( struct jpeg_error_mgr));
comment = ( txt_data*)malloc( sizeof( txt_data));
if ( jpeg == NULL || jerr == NULL || comment == NULL)
{
if ( comment) free( comment);
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
fclose( jpeg_file);
return FALSE;
}
comment->lines = 0;
comment->max_lines_length = 0;
comment->txt[0] = NULL;
jpeg->err = jpeg_std_error( jerr);
jpeg->err->emit_message = _jpeg_shutup;
jpeg->err->error_exit = _jpeg_errjmp;
jpeg->client_data = &escape;
if ( setjmp( escape))
{
if ( header >= 2)
jpeg_abort_decompress( jpeg);
jpeg_destroy_decompress( jpeg);
if ( comment)
{
register int16 i;
for ( i = 0; i < comment->lines; i++)
{
if( comment->txt[i])
free( comment->txt[i]);
}
free( comment);
comment = NULL;
}
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
fclose( jpeg_file);
return FALSE;
}
jpeg_create_decompress( jpeg);
jpeg_stdio_src( jpeg, jpeg_file);
jpeg_save_markers( jpeg, JPEG_COM, 0xffff); /* comment */
jpeg_save_markers( jpeg, M_EXIF, 0xFFFF); /* EXIF */
jpeg_read_header( jpeg, TRUE);
// faster that the default method ( 10%) for a very little output quality lost
jpeg->dct_method = JDCT_IFAST;
jpeg->do_fancy_upsampling = FALSE;
header = 1;
jpeg_start_decompress( jpeg);
header = 2;
jpeg->client_data = NULL;
switch( jpeg->out_color_space)
{
case JCS_RGB:
info->components = 3;
break;
case JCS_GRAYSCALE:
info->components = 1;
break;
default:
jpeg->out_color_space = JCS_RGB;
info->components = jpeg->out_color_components = 3;
break;
}
info->real_width = jpeg->image_width;
info->real_height = jpeg->image_height;
info->width = info->real_width;
info->height = info->real_height;
info->planes = ( ( jpeg->out_color_space == JCS_RGB) ? 24 : 8);
info->orientation = UP_TO_DOWN;
info->colors = 1 << info->planes;
info->memory_alloc = TT_RAM;
info->indexed_color = FALSE;
info->page = 1;
info->delay = 0;
strcpy( info->info, "JPEG");
if( info->planes == 8)
strcat( info->info, " Greyscale");
strcpy( info->compression, "JPG");
for ( mark = jpeg->marker_list; mark; mark = mark->next)
{
if( mark->marker == JPEG_COM)
{
if (!mark->data || !mark->data_length)
continue;
comment->txt[comment->lines] = ( int8*)malloc( mark->data_length + 1);
if( comment->txt[comment->lines] == NULL)
continue;
memcpy( comment->txt[comment->lines], mark->data, mark->data_length);
comment->max_lines_length = MAX( comment->max_lines_length, ( int16)mark->data_length + 1);
comment->lines++;
}
else if( mark->marker == M_EXIF)
{
int i, l, lenght;
char value[1024+256];
ExifData *exifData = exif_data_new_from_data(( char*)mark->data, mark->data_length);
if( !exifData)
continue;
for( i = 0; i < EXIF_IFD_COUNT; i++)
{
ExifContent* content = exifData->ifd[i];
for ( l = 0; l < content->count; l++)
{
if( comment->lines > 253)
break;
ExifEntry *e = content->entries[l];
sprintf( value, "%s", exif_tag_get_name (e->tag));
strcat( value, ": ");
lenght = strlen( value);
exif_entry_get_value( e, &value[lenght], sizeof(value) - lenght);
lenght = strlen( value);
comment->txt[comment->lines] = ( int8*)malloc( lenght + 1);
if( comment->txt[comment->lines] == NULL)
break;
strcpy( comment->txt[comment->lines], value);
comment->max_lines_length = MAX( comment->max_lines_length, ( int16)lenght);
comment->lines++;
}
}
if(( exifData->data) && ( exifData->size > 0) && info->thumbnail)
{
int32 size = exifData->size;
info->__priv_ptr_more = malloc( size + 1);
memcpy( info->__priv_ptr_more, exifData->data, size);
exif_data_unref( exifData);
jpeg_finish_decompress( jpeg);
jpeg_destroy_decompress( jpeg);
free( jpeg->err);
free( jpeg);
fclose( jpeg_file);
if( decompress_thumbnail_image( info->__priv_ptr_more, size, info))
{
info->num_comments = comment->lines;
info->max_comments_length = comment->max_lines_length;
info->_priv_ptr_more = ( void*)comment;
return TRUE;
}
else // We can't extract the thumbnail :/
{
free( info->__priv_ptr_more);
exif_data_unref( exifData);
if ( comment)
{
register int16 i;
for ( i = 0; i < comment->lines; i++)
{
if( comment->txt[i])
free( comment->txt[i]);
}
free( comment);
comment = NULL;
}
return FALSE;
}
}
exif_data_unref( exifData);
}
}
info->num_comments = comment->lines;
info->max_comments_length = comment->max_lines_length;
info->_priv_ptr = ( void*)jpeg;
info->_priv_ptr_more = ( void*)comment;
info->__priv_ptr_more = NULL;
info->_priv_var = jpeg_file;
info->_priv_var_more = 0; /* 1 for exif thumbnail */
jpeg->client_data = NULL;
return TRUE;
}
/*==================================================================================*
* boolean CDECL reader_get_txt *
* This function , like other CDECL function mus be always present. *
* It fills txtdata struct. with the text present in the picture ( if any). *
*----------------------------------------------------------------------------------*
* input: *
* txtdata -> The destination text buffer. *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* -- *
*==================================================================================*/
void CDECL reader_get_txt( IMGINFO info, txt_data *txtdata)
{
register int16 i;
txt_data *comment;
if( dsp_decoding)
return;
comment = ( txt_data *)info->_priv_ptr_more;
for ( i = 0; i < txtdata->lines; i++)
strcpy( txtdata->txt[i] , comment->txt[i]);
}
/*==================================================================================*
* boolean CDECL reader_read: *
* This function fits the buffer with image data *
*----------------------------------------------------------------------------------*
* input: *
* buffer -> The destination buffer. *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* TRUE if all ok else FALSE. *
*==================================================================================*/
boolean CDECL reader_read( IMGINFO info, uint8 *buffer)
{
if( dsp_decoding)
{
const void *source = ( uint8*)info->_priv_ptr + info->_priv_var_more;
memcpy( ( void*)buffer, source, info->_priv_var);
info->_priv_var_more += info->_priv_var;
return TRUE;
}
if( jpeg_read_scanlines(( JPEG_DEC)info->_priv_ptr, ( JSAMPROW*)&buffer, 1))
return TRUE;
return FALSE;
}
/*==================================================================================*
* boolean CDECL reader_quit: *
* This function makes the last job like close the file handler and free the *
* allocated memory. *
*----------------------------------------------------------------------------------*
* input: *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* -- *
*==================================================================================*/
void CDECL reader_quit( IMGINFO info)
{
JPEG_DEC jpeg;
txt_data *comment;
if( dsp_decoding)
{
if( info->_priv_ptr)
{
// DSP decoder uses Mxalloc()
Mfree( info->_priv_ptr);
}
return;
}
jpeg = ( JPEG_DEC)info->_priv_ptr;
comment = ( txt_data *)info->_priv_ptr_more;
if( !jpeg)
return;
if( comment)
{
register int16 i;
for ( i = 0; i < comment->lines; i++)
{
if( comment->txt[i])
free( comment->txt[i]);
}
free( comment);
}
jpeg_finish_decompress( jpeg);
jpeg_destroy_decompress( jpeg);
free( jpeg->err);
free( jpeg);
/* thumbnail mode? */
if( info->__priv_ptr_more)
{
free( info->__priv_ptr_more);
return;
}
fclose( info->_priv_var);
}
/*==================================================================================*
* boolean set_jpg_option: *
* This function set some encoder's options *
*----------------------------------------------------------------------------------*
* input: *
*----------------------------------------------------------------------------------*
* return: *
* -- *
*==================================================================================*/
void CDECL set_jpg_option( int16 set_quality, J_COLOR_SPACE set_color_space, boolean set_progressive)
{
quality = set_quality;
color_space = set_color_space;
progressive = set_progressive;
}
/*==================================================================================*
* boolean CDECL encoder_init: *
* Open the file "name", fit the "info" struct. ( see zview.h) and make others *
* things needed by the encoder. *
*----------------------------------------------------------------------------------*
* input: *
* name -> The file to open. *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* TRUE if all ok else FALSE. *
*==================================================================================*/
boolean CDECL encoder_init( const char *name, IMGINFO info)
{
JPEG_ERR jerr = NULL;
JPEG_ENC jpeg = NULL;
FILE* jpeg_file;
jmp_buf escape;
int16 header = 0;
if ( ( jpeg_file = fopen( name, "wb")) == NULL)
return FALSE;
jpeg = ( JPEG_ENC) malloc( sizeof( struct jpeg_decompress_struct));
jerr = ( JPEG_ERR) malloc( sizeof( struct jpeg_error_mgr));
if ( jpeg == NULL || jerr == NULL)
{
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
fclose( jpeg_file);
return FALSE;
}
if ( setjmp( escape))
{
if ( header > 1)
jpeg_abort_compress( jpeg);
jpeg_destroy_compress( jpeg);
if ( jerr) free( jerr);
if ( jpeg) free( jpeg);
jerr = NULL;
jpeg = NULL;
fclose( jpeg_file);
return FALSE;
}
jpeg->err = jpeg_std_error( jerr);
jpeg->err->emit_message = _jpeg_shutup;
jpeg->err->error_exit = _jpeg_errjmp;
jpeg->client_data = &escape;
jpeg_create_compress( jpeg);
jpeg_stdio_dest( jpeg, jpeg_file);
jpeg->image_width = info->width;
jpeg->image_height = info->height;
jpeg->input_components = info->components = 3;
jpeg->in_color_space = JCS_RGB;
jpeg_set_defaults( jpeg);
jpeg_set_colorspace ( jpeg, color_space);
/* jpeg->num_components = ( color_space == JCS_RGB ? 3 : 1);
jpeg->jpeg_color_space = color_space;
*/ jpeg->progressive_mode = progressive;
jpeg_set_quality( jpeg, quality, TRUE);
header = 1;
jpeg_start_compress( jpeg, TRUE);
header = 2;
info->planes = 24;
info->colors = 16777215L;
info->orientation = UP_TO_DOWN;
info->real_width = info->width;
info->real_height = info->height;
info->memory_alloc = TT_RAM;
info->indexed_color = FALSE;
info->page = 1;
info->delay = 0;
info->_priv_ptr = ( void*)jpeg;
info->_priv_ptr_more = NULL;
info->__priv_ptr_more = NULL;
info->_priv_var = jpeg_file;
info->_priv_var_more = 0;
jpeg->client_data = NULL;
return TRUE;
}
/*==================================================================================*
* boolean CDECLencoder_write: *
* This function write data from buffer to file *
*----------------------------------------------------------------------------------*
* input: *
* buffer -> The source buffer. *
* info -> The IMGINFO struct . *
*----------------------------------------------------------------------------------*
* return: *
* TRUE if all ok else FALSE. *
*==================================================================================*/
boolean CDECL encoder_write( IMGINFO info, uint8 *buffer)
{
( void)jpeg_write_scanlines( ( JPEG_ENC)info->_priv_ptr, ( JSAMPROW*)&buffer, 1);
return TRUE;
}
/*==================================================================================*
* boolean CDECL encoder_quit: *
* This function makes the last job like close the file handler and free the *
* allocated memory. *
*----------------------------------------------------------------------------------*
* input: *
* info -> The IMGINFO struct. to fit. *
*----------------------------------------------------------------------------------*
* return: *
* -- *
*==================================================================================*/
void CDECL encoder_quit( IMGINFO info)
{
JPEG_ENC jpeg = ( JPEG_ENC)info->_priv_ptr;
if( jpeg)
{
jpeg_finish_compress( jpeg);
jpeg_destroy_compress( jpeg);
free( jpeg->err);
free( jpeg);
fclose( info->_priv_var);
}
}
/*==================================================================================*
* boolean CDECL init: *
* First function called from zview, in this one, you can make some internal *
* initialisation. *
*----------------------------------------------------------------------------------*
* input: *
* -- *
*----------------------------------------------------------------------------------*
* return: *
* -- *
*==================================================================================*/
void CDECL init( void)
{
int32 mach, cpu = 0;
/* DSP decoder present */
if( Getcookie( C__JPD, ( long*)&jpgdrv) != 0)
jpgdrv = NULL;
else
{
// Cconws("JPG Cookie found \n\r");
Getcookie( C__MCH, ( long*)&mach);
/* If Aranym is detected, we decode with the DSP routine */
/* and we can use TT ram for DSP allocation */
if( mach == 0x50000L)
{
dsp_ram = 3;
// Cconws("JPG Cookie used \n\r");
return;
}
Getcookie( C__CPU, ( long*)&cpu);
cpu &= 0xFFFF;
/* if we have a CPU > 68030, we decode with this one, it's faster */
if( cpu != 30)
jpgdrv = NULL;
}
}
/*==================================================================================*
* int main: *
* Main function, his job is to call ldg_init function. *
*----------------------------------------------------------------------------------*
* input: *
* -- *
*----------------------------------------------------------------------------------*
* return: *
* 0 *
*==================================================================================*/
int main( void)
{
ldg_init( &plugin);
return( 0);
}