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//
// Lynkeos
// SER_Writer.m
//
// Created by Jean-Etienne LAMIAUD on Wed Dec 20 2023.
// Copyright (c) 2023. Jean-Etienne LAMIAUD
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#include <stdio.h>
#include <math.h>
#include <AppKit/AppKit.h>
#include <LynkeosCore/LynkeosMetadata.h>
#include "SER_Writer.h"
@implementation SER_Writer
+ (void) load
{
// Nothing to do, this is just to force the runtime to load this class
}
- (id) init
{
if ( (self = [super init]) != nil )
{
_nPlanes = 0;
}
return( self );
}
+ (NSString*) writerName { return( @"SER" ); }
+ (NSString*) fileExtension { return( @"ser" ); }
+ (BOOL) canSaveDataWithPlanes:(u_short)nPlanes
width:(u_short)w height:(u_short)h
metaData:(NSDictionary*)metaData
{
return( nPlanes == 3 || nPlanes == 1 );
}
- (NSPanel*) configurationPanel
{
return nil;
}
+ (id <LynkeosFileWriter>) writerForURL:(NSURL*)url
planes:(u_short)nPlanes
width:(u_short)w height:(u_short)h
metaData:(NSDictionary*)metaData
{
SER_Writer *writer = [[[self alloc] init] autorelease];
writer->_nPlanes = nPlanes;
return writer;
}
- (u_short) numberOfPlanes {return _nPlanes;}
- (void) saveMovieAtURL:(NSURL *)url
withDelegate:(id<LynkeosMovieFileWriterDelegate>)delegate
opaque:(void *)opaque
blackLevel:(double)black
whiteLevel:(double)white
withPlanes:(u_short)nPlanes
width:(u_short)w
height:(u_short)h
metaData:(NSDictionary *)metaData
{
FILE *file = fopen([[url path] fileSystemRepresentation], "wb");
const double max = white - black;
const REAL * const * planes;
uint16_t *dataLine;
u_short lineW;
int32_t count = 0;
if (file == NULL)
return;
SER_Header_t hdr = {
.FileID = {'0'},
.LuID = 0,
.ColorID = (nPlanes == 3 ? SER_RGB : SER_MONO),
.LittleEndian = 1,
.ImageWidth = w,
.ImageHeight = h,
.PixelDepthPerPlane = 16,
.FrameCount = 0, // To be updated later
.Observer = {0},
.Instrument = {0},
.Telescope = {0},
.DateTime = 0,
.DateTime_UTC = 0
};
#if !GNUSTEP
if (metaData != nil)
{
NSString *str;
NSArray *auth = (NSArray*)[metaData objectForKey:LynkeosMD_Authors()];
if (auth != nil)
strncpy(hdr.Observer,
[[auth componentsJoinedByString:@" "] UTF8String],
SER_STRING_LENGTH);
str = (NSString*)[metaData objectForKey:LynkeosMD_CameraModel()];
if (str != nil)
strncpy(hdr.Instrument, [str UTF8String], SER_STRING_LENGTH);
str = (NSString*)[metaData objectForKey:LynkeosMD_Telescope()];
if (str != nil)
strncpy(hdr.Telescope, [str UTF8String], SER_STRING_LENGTH);
NSDate *d = (NSDate*)[metaData objectForKey:LynkeosMD_CaptureDate()];
if (d != nil)
{
NSTimeZone *tz = [NSTimeZone systemTimeZone];
NSTimeInterval o = (NSTimeInterval)[tz secondsFromGMTForDate:d];
hdr.DateTime_UTC = (int64_t)round([d timeIntervalSinceReferenceDate]/SER_DATE_TIMEBASE)
+ SER_DATE_ORIGIN;
hdr.DateTime = (int64_t)round(([d timeIntervalSinceReferenceDate] + o)/SER_DATE_TIMEBASE)
+ SER_DATE_ORIGIN;
}
}
#endif
if (SER_write_header(file, hdr) < 0)
{
fclose(file);
return;
}
dataLine = (uint16_t*)malloc(w*3*sizeof(uint16_t));
for (;;)
{
BOOL canceled;
[delegate getNextFrameWithData:&planes lineWidth:&lineW opaque:opaque canceled:&canceled];
if (canceled || planes == NULL)
break;
for (u_short y = 0; y < h; y++)
{
for (u_short x = 0; x < w; x++)
{
for (u_short c = 0; c < nPlanes; c++)
{
double v = GET_SAMPLE(planes[c], x, y, lineW)*max;
if ( v < 0.0 )
v = 0.0;
if ( v > 65535.0 )
v = 65535.0;
dataLine[x*3 + c] = (uint16_t)v;
}
}
if (fwrite(dataLine, sizeof(uint16_t), w*3, file) < 0)
{
fclose(file);
free(dataLine);
return;
}
}
count++;
}
free(dataLine);
SER_write_frameCount(file, count);
fclose(file);
}
@end
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