jpg_reader_t::jpg_reader_t( const boost::filesystem::path& p) : reader_t( p)
{
int width, height;
if( !get_jpeg_size( filesystem::file_cstring( p), width, height ))
throw unknown_image_format();
info_[ adobe::name_t( "format")] = adobe::any_regular_t( Imath::Box2i( Imath::V2i( 0, 0), Imath::V2i( width-1, height-1)));
}
int main(int argc, char **argv)
{
char *infilename, *outfilename;
FILE *rFile,*wFile;
int lSize,i,ind = 0,count = 0;
int flag = 1;
int range;
int id;
int ret;
unsigned char *buffer = NULL;
size_t result;
if(argc == 2)
{
infilename = argv[1];
}
else
{
fprintf(stderr, "input format error\n");
exit(0);
}
printf("Devcie ID = %d\n", id);
printf("Input file name = %s\n", infilename);
printf("Output file name = %s\n", outfilename);
char get_char;
int p = 0;
int SendDevice;
int SendSize;
int sum = 0;
//Read Image from file(camera)
lSize = ImageFromFile(infilename, &buffer);
unsigned short width,height;
bool jpegfile;
jpegfile =get_jpeg_size(buffer, lSize, &width, &height);
if(jpegfile)
printf("width = %d\nheight = %d\n",width,height);
else
printf("Not jpeg file\n");
free(buffer);
return 0;
}
/*-----------------------------------------------------------
image processing procedures
image2jpeg: encodes raw image to jpeg
add_text: adds a caption to the image
swap_rgb24: RGB->RBG
fliph: flips the image horizontally
flipv: flips vertically
-----------------------------------------------------------*/
int image2jpeg(struct image *img, char **jpeg_data, int quality)
{
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
int i, size;
int w, h;
unsigned char *line;
w = img->width;
h = img->height;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
jpeg_buff_dest(&cinfo);
cinfo.image_width = w;
cinfo.image_height = h;
cinfo.input_components = 3;
cinfo.in_color_space = JCS_RGB;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, TRUE);
jpeg_start_compress(&cinfo, TRUE);
for (i = 0, line = img->buf; i < h; i++, line += w*3)
jpeg_write_scanlines(&cinfo, &line, 1);
jpeg_finish_compress(&cinfo);
size = get_jpeg_size(&cinfo);
/* this memory must be freed elsewhere */
(*jpeg_data) = (char *)malloc(size);
if(!(*jpeg_data))
{
jpeg_destroy_compress(&cinfo);
jpeg_buff_free(&cinfo);
return -1;
}
memcpy(*jpeg_data, ((my_dest_ptr)cinfo.dest)->buffer, size);
jpeg_destroy_compress(&cinfo);
jpeg_buff_free(&cinfo);
return size;
}
