Ticket #144: Output file error.c

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

#include "cc3.h"
#include "jpeglib.h" 

static void capture_current_jpeg(FILE *f);
static void init_jpeg(void);
static void destroy_jpeg(void); 

int main(void)
{ 

  int i,j;
  FILE *f; 

  cc3_uart_init (0, CC3_UART_RATE_115200, CC3_UART_MODE_8N1, CC3_UART_BINMODE_TEXT); 

  cc3_camera_init (); 

  cc3_filesystem_init(); 

  cc3_camera_set_resolution(CC3_CAMERA_RESOLUTION_LOW);
  cc3_pixbuf_frame_set_subsample (CC3_SUBSAMPLE_NEAREST, 2, 1);
  cc3_timer_wait_ms(1000); 

  // init pixbuf with width and height
  cc3_pixbuf_load(); 

  Init_jpeg(); 

  cc3_led_set_state(1, true); 

  i = 0;
  while(true)
  { 

    printf("Image jpg num: %d\n",i);
    f = fopen("c:/cmucam.jpg", "w+");
    if ( f!=NULL )
    { 
      capture_current_jpeg(f);
      rewind(f);
      j=0;
      while ( !feof(f) )
      { 
        fgetc (f);
        j++; 
      }
      printf("Image size: %d bytes\n",j);
      fclose(f); 
    } 
    else
    { 
     printf("Error acess file !\n"); 
    }
    i++; 
  } 

  destroy_jpeg();
  return 0; 

} 

//------------------------------------------------------------------------------

static struct jpeg_compress_struct cinfo;
static struct jpeg_error_mgr jerr;
uint8_t *row; 

void init_jpeg(void)
{ 

  cinfo.err = jpeg_std_error(&jerr);
  jpeg_create_compress(&cinfo); 

  // parameters for jpeg image
  cinfo.image_width = cc3_g_pixbuf_frame.width;
  cinfo.image_height = cc3_g_pixbuf_frame.height;
  printf( "image width=%d image height=%d\n", cinfo.image_width, cinfo.image_height );
  cinfo.input_components = 3; 

  cinfo.in_color_space = JCS_RGB; 

  // set image quality, etc. 
  jpeg_set_defaults(&cinfo); 
  jpeg_set_quality(&cinfo, 100, true); 

  // allocate memory for 1 row 
  row = cc3_malloc_rows(1);
  if(row==NULL) printf( "Out of memory!\n" ); 

} 

void capture_current_jpeg(FILE *f)
{ 

  JSAMPROW row_pointer[1]; row_pointer[0] = row; 

  // output is file 
  jpeg_stdio_dest(&cinfo, f); 

  // capture a frame to the FIFO 
  cc3_pixbuf_load(); 

  // read and compress 
  jpeg_start_compress(&cinfo, TRUE); 
  while (cinfo.next_scanline < cinfo.image_height)
  { 

    cc3_pixbuf_read_rows(row, 1);
    jpeg_write_scanlines(&cinfo, row_pointer, 1); 

  } 


  // finish
  jpeg_finish_compress(&cinfo); 

} 

void destroy_jpeg(void)
{ 

  jpeg_destroy_compress(&cinfo);
  free(row); 

}