SER file format works now for writing.

main.cc

@@ -12,6 +12,7 @@
 #include "filter.h"
 #include "detect.h"
 #include "convert.h"
+#include "ser.h"
 
 /**************************************************************************
  * global variables

ser.cc

@@ -24,7 +24,7 @@ SER::SER() {
   header.LittleEndian = 1;
   header.ImageWidth = 0;
   header.ImageHeight = 0;
-  header.PixelDepthPerPlane = 0;
+  header.PixelDepthPerPlane = 8;
   header.FrameCount = 0;
   header.DateTime = 0;
   header.DateTimeUTC = 0;
@@ -33,11 +33,15 @@ SER::SER() {
   Frame = NULL;
 }
 
-
+/*
+  Class destructor.  Free resources.
+*/
 SER::~SER() {
+  /* Close file if necessary */
   if(fd) {
     fclose(fd);
   }
+  /* Free frame memory if necessary */
   if(Frame) {
     free(Frame);
   }
@@ -89,11 +93,13 @@ int SER::setFile(char *name) {
     }
     else {
       fprintf(stdout, "Debug: created file '%s' for writing SER file\n", name);
+      fd = file;
       return 0;
     }
   }
 
   fprintf(stdout, "Debug: opened file '%s' for reading SER file\n", name);
+  fd = file;
   return 0;
 }
 
@@ -102,15 +108,25 @@ int SER::setFile(char *name) {
  */
 int SER::writeHeader(void) {
 
+  int err;
+
+  /* adjust time stamps for header */
+  setDateTime();
+
+  if(fd == NULL) {
+    fprintf(stderr, "Error: writing header, SER file not yet specified\n");
+    return -1;
+  }
+  
   /* goto file beginning */
-  if(fseek(fd, 0, SEEK_SET) == -1) {
+  if((err = fseek(fd, 0, SEEK_SET)) == -1) {
-    fprintf(stderr, "Error: failed seek SER file beginning (%s)\n", strerror(errno));
+    fprintf(stderr, "Error: failed seek SER file beginning (%d, %s)\n", err, strerror(errno));
     return -1;
   }
-    
+
   /* write header data */
-  if(fwrite(&header, sizeof(header), 1, fd) != sizeof(header)) {
+  if((err = fwrite(&header, sizeof(header), 1, fd)) != 1) {
-    fprintf(stderr, "Error: failed writing SER header (%s)\n", strerror(errno));
+    fprintf(stderr, "Error: failed writing SER header (%d, %s)\n", err, strerror(errno));
     return -1;
   }
   return 0;
@@ -122,8 +138,13 @@ int SER::writeHeader(void) {
  */
 int SER::appendFrame(void *data) {
 
+  if(fd == NULL) {
+    fprintf(stderr, "Error: appending frame, SER file not yet specified\n");
+    return -1;
+  }
+  
   /* write frame data */
-  if(fwrite(data, FrameSize, 1, fd) != FrameSize) {
+  if(fwrite(data, FrameSize, 1, fd) != 1) {
     fprintf(stderr, "Error: failed write SER frame (%s)\n", strerror(errno));
     return -1;
   }
@@ -140,6 +161,30 @@ void SER::updateHeaderData(void) {
   FrameSize = header.ImageWidth * header.ImageHeight * BytesPerPixel;
 }
 
+/*
+  Sets the pixel depth in bits.
+ */
+int SER::setPixelDepth(int pixeldepth) {
+  header.PixelDepthPerPlane = pixeldepth;
+  updateHeaderData();
+  return 0;
+}
+
+/*
+  Returns the pixel depth in bits.
+ */
+int SER::getPixelDepth(void) {
+  return header.PixelDepthPerPlane;
+}
+
+/*
+  Returns the number of bytes in an allocated frame.
+ */
+size_t SER::getFrameSize(void) {
+  updateHeaderData();
+  return FrameSize;
+}
+
 /*
   Sets the image width.
  */
@@ -149,6 +194,13 @@ int SER::setWidth(int width) {
   return 0;
 }
 
+/*
+  Gets the image width.
+ */
+int SER::getWidth(void) {
+  return header.ImageWidth;
+}
+
 /*
   Sets the image height.
  */
@@ -158,6 +210,13 @@ int SER::setHeight(int height) {
   return 0;
 }
 
+/*
+  Gets the image height.
+ */
+int SER::getHeight(void) {
+  return header.ImageHeight;
+}
+
 /*
   Sets the color ID.
  */
@@ -181,12 +240,14 @@ void * SER::allocFrame(void) {
   
   /* Try allocating new frame data. */
   if((Frame = malloc(FrameSize)) == NULL) {
-    fprintf(stderr, "Error: failed to allocate %lu bytes for frame\n", FrameSize);
+    fprintf(stderr, "Error: failed to allocate %d bytes for frame\n", FrameSize);
     return NULL;
   }
   return Frame;
 }
 
+
+
 /*
   The function reads a single frame at the current file position.
   Frame size is determined by internal header data.

ser.h

@@ -1,6 +1,40 @@
 #ifndef _SER_H_
 #define _SER_H_
 
+/*
+  Example usage of the class:
+  ---------------------------
+
+  SER *ser = new SER();
+  ser->setWidth(640);
+  ser->setHeight(480);
+  ser->setColorID(SER_COLORID_RGB);
+  ser->setPixelDepth(8);
+  ser->setFile((char *)"test.ser");
+  ser->setNumberOfFrames(1);
+  ser->writeHeader();
+  uint8_t * data = (uint8_t *) ser->allocFrame();
+  memset(data, 0, ser->getFrameSize());
+  for(int y = 0; y < ser->getHeight()/3; y++) {
+    for(int x = 0; x < ser->getWidth(); x++) {
+      data[y*ser->getWidth()*3 + x*3 + 0] = 0xff;
+    }
+  }
+  for(int y = ser->getHeight()/3; y < 2*ser->getHeight()/3; y++) {
+    for(int x = 0; x < ser->getWidth(); x++) {
+      data[y*ser->getWidth()*3 + x*3 + 1] = 0xff;
+    }
+  }
+  for(int y = 2*ser->getHeight()/3; y < 3*ser->getHeight()/3; y++) {
+    for(int x = 0; x < ser->getWidth(); x++) {
+      data[y*ser->getWidth()*3 + x*3 + 2] = 0xff;
+    }
+  }
+  ser->appendFrame(data);
+  delete ser;
+
+ */
+
 enum {
   SER_COLORID_MONO = 0,
   SER_COLORID_BAYER_RGGB = 8,
@@ -15,8 +49,8 @@ enum {
   SER_COLORID_BGR = 101
 };
 
-struct SER_Header {
+struct __attribute__((__packed__)) SER_Header {
-  char FileID[40];              /* "LUCAM-RECORDER" (fix) */
+  char FileID[14];              /* "LUCAM-RECORDER" (fix) */
   int32_t LuID;                 /* Lumenera camera series ID (currently unused; default = 0) */
   int32_t ColorID;              /* see SER_COLORID_* */
   int32_t LittleEndian;         /* 0 (FALSE) for big-endian, 1 (TRUE) for little-endian */
@@ -55,11 +89,16 @@ class SER {
   int setTelescope(char *);
   int setWidth(int);
   int setHeight(int);
+  int getWidth(void);
+  int getHeight(void);
   int setColorID(int);
+  int setPixelDepth(int);
+  int getPixelDepth(void);
   int32_t getNumberOfFrames(void);
   void setNumberOfFrames(int32_t);
   int64_t setDateTime(void);
   int64_t differenceLocalUTC(void);
+  size_t getFrameSize(void);
   
   int setFile(char *);
   int writeHeader(void);