public static string IdentifyImageFormat(IMAGE_FORMATS format)
{
switch (format)
{
case IMAGE_FORMATS.JPG:
return(".jpg");
case IMAGE_FORMATS.PNG:
return(".png");
default:
return(null);
}
}
/// <summary>
/// Parse optional switches.
/// Returns argv[] index of first file-name argument (== argc if none).
/// Any file names with indexes <= last_file_arg_seen are ignored;
/// they have presumably been processed in a previous iteration.
/// (Pass 0 for last_file_arg_seen on the first or only iteration.)
/// for_real is false on the first (dummy) pass; we may skip any expensive
/// processing.
/// </summary>
static bool parse_switches(jpeg_decompress_struct cinfo, string[] argv, bool for_real, out int last_file_arg_seen)
{
string arg;
/* Set up default JPEG parameters. */
requested_fmt = IMAGE_FORMATS.FMT_BMP; /* set default output file format */
outfilename = null;
last_file_arg_seen = -1;
cinfo.Err.Trace_level = 0;
/* Scan command line options, adjust parameters */
int argn = 0;
for ( ; argn < argv.Length; argn++)
{
arg = argv[argn];
if (arg[0] != '-')
{
/* Not a switch, must be a file name argument */
last_file_arg_seen = argn;
break;
}
arg = arg.Substring(1);
if (cdjpeg_utils.keymatch(arg, "bmp", 1))
{
/* BMP output format. */
requested_fmt = IMAGE_FORMATS.FMT_BMP;
}
else if (cdjpeg_utils.keymatch(arg, "colors", 1) ||
cdjpeg_utils.keymatch(arg, "colours", 1) ||
cdjpeg_utils.keymatch(arg, "quantize", 1) ||
cdjpeg_utils.keymatch(arg, "quantise", 1))
{
/* Do color quantization. */
if (++argn >= argv.Length) /* advance to next argument */
{
return(false);
}
try
{
int val = int.Parse(argv[argn]);
cinfo.Desired_number_of_colors = val;
cinfo.Quantize_colors = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return(false);
}
}
else if (cdjpeg_utils.keymatch(arg, "dct", 2))
{
/* Select IDCT algorithm. */
if (++argn >= argv.Length) /* advance to next argument */
{
return(false);
}
if (cdjpeg_utils.keymatch(argv[argn], "int", 1))
{
cinfo.Dct_method = J_DCT_METHOD.JDCT_ISLOW;
}
else if (cdjpeg_utils.keymatch(argv[argn], "fast", 2))
{
cinfo.Dct_method = J_DCT_METHOD.JDCT_IFAST;
}
else if (cdjpeg_utils.keymatch(argv[argn], "float", 2))
{
cinfo.Dct_method = J_DCT_METHOD.JDCT_FLOAT;
}
else
{
return(false);
}
}
else if (cdjpeg_utils.keymatch(arg, "dither", 2))
{
/* Select dithering algorithm. */
if (++argn >= argv.Length) /* advance to next argument */
{
return(false);
}
if (cdjpeg_utils.keymatch(argv[argn], "fs", 2))
{
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_FS;
}
else if (cdjpeg_utils.keymatch(argv[argn], "none", 2))
{
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_NONE;
}
else if (cdjpeg_utils.keymatch(argv[argn], "ordered", 2))
{
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_ORDERED;
}
else
{
return(false);
}
}
else if (cdjpeg_utils.keymatch(arg, "debug", 1) || cdjpeg_utils.keymatch(arg, "verbose", 1))
{
/* Enable debug printouts. */
/* On first -d, print version identification */
if (!printed_version)
{
Console.Write(string.Format("Bit Miracle's DJPEG, version {0}\n{1}\n", jpeg_common_struct.Version, jpeg_common_struct.Copyright));
printed_version = true;
}
cinfo.Err.Trace_level++;
}
else if (cdjpeg_utils.keymatch(arg, "fast", 1))
{
/* Select recommended processing options for quick-and-dirty output. */
cinfo.Two_pass_quantize = false;
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_ORDERED;
if (!cinfo.Quantize_colors) /* don't override an earlier -colors */
{
cinfo.Desired_number_of_colors = 216;
}
cinfo.Dct_method = JpegConstants.JDCT_FASTEST;
cinfo.Do_fancy_upsampling = false;
}
else if (cdjpeg_utils.keymatch(arg, "grayscale", 2) || cdjpeg_utils.keymatch(arg, "greyscale", 2))
{
/* Force monochrome output. */
cinfo.Out_color_space = J_COLOR_SPACE.JCS_GRAYSCALE;
}
else if (cdjpeg_utils.keymatch(arg, "rgb", 3))
{
/* Force RGB output. */
cinfo.Out_color_space = J_COLOR_SPACE.JCS_RGB;
}
else if (cdjpeg_utils.keymatch(arg, "nosmooth", 3))
{
/* Suppress fancy upsampling */
cinfo.Do_fancy_upsampling = false;
}
else if (cdjpeg_utils.keymatch(arg, "onepass", 3))
{
/* Use fast one-pass quantization. */
cinfo.Two_pass_quantize = false;
}
else if (cdjpeg_utils.keymatch(arg, "os2", 3))
{
/* BMP output format (OS/2 flavor). */
requested_fmt = IMAGE_FORMATS.FMT_OS2;
}
else if (cdjpeg_utils.keymatch(arg, "outfile", 4))
{
/* Set output file name. */
if (++argn >= argv.Length) /* advance to next argument */
{
return(false);
}
outfilename = argv[argn]; /* save it away for later use */
}
else if (cdjpeg_utils.keymatch(arg, "scale", 1))
{
/* Scale the output image by a fraction M/N. */
if (++argn >= argv.Length) /* advance to next argument */
{
return(false);
}
int slashPos = argv[argn].IndexOf('/');
if (slashPos == -1)
{
return(false);
}
try
{
string num = argv[argn].Substring(0, slashPos);
cinfo.Scale_num = int.Parse(num);
string denom = argv[argn].Substring(slashPos + 1);
cinfo.Scale_denom = int.Parse(denom);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return(false);
}
}
else
{
/* bogus switch */
return(false);
}
}
return(true);
}
public static byte[] GetItem(string username, int size, ITEMS_COLLECTION item, IMAGE_FORMATS format)
{
string mainUrl = ApiUtils.IdentifyItem(item);
string imageFormat = ApiUtils.IdentifyImageFormat(format);
string[] args = ApiUtils.GetArgs(mainUrl, username, size, imageFormat, item);
return(FileUtils.GetBytesFromResponse(api.Request(args)));
}
public static void SaveItem(string username, string path, int size, ITEMS_COLLECTION item, IMAGE_FORMATS format)
{
string mainUrl = ApiUtils.IdentifyItem(item);
string imageFormat = ApiUtils.IdentifyImageFormat(format);
string[] args = ApiUtils.GetArgs(mainUrl, username, size, imageFormat, item);
FileUtils.SaveFileFromResponse(api.Request(args), path);
}
/// <summary>
/// Parse optional switches.
/// Returns argv[] index of first file-name argument (== argc if none).
/// Any file names with indexes <= last_file_arg_seen are ignored;
/// they have presumably been processed in a previous iteration.
/// (Pass 0 for last_file_arg_seen on the first or only iteration.)
/// for_real is false on the first (dummy) pass; we may skip any expensive
/// processing.
/// </summary>
static bool parse_switches(jpeg_decompress_struct cinfo, string[] argv, bool for_real, out int last_file_arg_seen)
{
string arg;
/* Set up default JPEG parameters. */
requested_fmt = IMAGE_FORMATS.FMT_BMP; /* set default output file format */
outfilename = null;
last_file_arg_seen = -1;
cinfo.Err.Trace_level = 0;
/* Scan command line options, adjust parameters */
int argn = 0;
for ( ; argn < argv.Length; argn++)
{
arg = argv[argn];
if (arg[0] != '-')
{
/* Not a switch, must be a file name argument */
last_file_arg_seen = argn;
break;
}
arg = arg.Substring(1);
if (cdjpeg_utils.keymatch(arg, "bmp", 1))
{
/* BMP output format. */
requested_fmt = IMAGE_FORMATS.FMT_BMP;
}
else if (cdjpeg_utils.keymatch(arg, "colors", 1) ||
cdjpeg_utils.keymatch(arg, "colours", 1) ||
cdjpeg_utils.keymatch(arg, "quantize", 1) ||
cdjpeg_utils.keymatch(arg, "quantise", 1))
{
/* Do color quantization. */
if (++argn >= argv.Length) /* advance to next argument */
return false;
try
{
int val = int.Parse(argv[argn]);
cinfo.Desired_number_of_colors = val;
cinfo.Quantize_colors = true;
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return false;
}
}
else if (cdjpeg_utils.keymatch(arg, "dct", 2))
{
/* Select IDCT algorithm. */
if (++argn >= argv.Length) /* advance to next argument */
return false;
if (cdjpeg_utils.keymatch(argv[argn], "int", 1))
cinfo.Dct_method = J_DCT_METHOD.JDCT_ISLOW;
else if (cdjpeg_utils.keymatch(argv[argn], "fast", 2))
cinfo.Dct_method = J_DCT_METHOD.JDCT_IFAST;
else if (cdjpeg_utils.keymatch(argv[argn], "float", 2))
cinfo.Dct_method = J_DCT_METHOD.JDCT_FLOAT;
else
return false;
}
else if (cdjpeg_utils.keymatch(arg, "dither", 2))
{
/* Select dithering algorithm. */
if (++argn >= argv.Length) /* advance to next argument */
return false;
if (cdjpeg_utils.keymatch(argv[argn], "fs", 2))
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_FS;
else if (cdjpeg_utils.keymatch(argv[argn], "none", 2))
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_NONE;
else if (cdjpeg_utils.keymatch(argv[argn], "ordered", 2))
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_ORDERED;
else
return false;
}
else if (cdjpeg_utils.keymatch(arg, "debug", 1) || cdjpeg_utils.keymatch(arg, "verbose", 1))
{
/* Enable debug printouts. */
/* On first -d, print version identification */
if (!printed_version)
{
Console.Write(string.Format("Bit Miracle's DJPEG, version {0}\n{1}\n", jpeg_common_struct.Version, jpeg_common_struct.Copyright));
printed_version = true;
}
cinfo.Err.Trace_level++;
}
else if (cdjpeg_utils.keymatch(arg, "fast", 1))
{
/* Select recommended processing options for quick-and-dirty output. */
cinfo.Two_pass_quantize = false;
cinfo.Dither_mode = J_DITHER_MODE.JDITHER_ORDERED;
if (!cinfo.Quantize_colors) /* don't override an earlier -colors */
cinfo.Desired_number_of_colors = 216;
cinfo.Dct_method = JpegConstants.JDCT_FASTEST;
cinfo.Do_fancy_upsampling = false;
}
else if (cdjpeg_utils.keymatch(arg, "grayscale", 2) || cdjpeg_utils.keymatch(arg, "greyscale", 2))
{
/* Force monochrome output. */
cinfo.Out_color_space = J_COLOR_SPACE.JCS_GRAYSCALE;
}
else if (cdjpeg_utils.keymatch(arg, "nosmooth", 3))
{
/* Suppress fancy upsampling */
cinfo.Do_fancy_upsampling = false;
}
else if (cdjpeg_utils.keymatch(arg, "onepass", 3))
{
/* Use fast one-pass quantization. */
cinfo.Two_pass_quantize = false;
}
else if (cdjpeg_utils.keymatch(arg, "os2", 3))
{
/* BMP output format (OS/2 flavor). */
requested_fmt = IMAGE_FORMATS.FMT_OS2;
}
else if (cdjpeg_utils.keymatch(arg, "outfile", 4))
{
/* Set output file name. */
if (++argn >= argv.Length) /* advance to next argument */
return false;
outfilename = argv[argn]; /* save it away for later use */
}
else if (cdjpeg_utils.keymatch(arg, "scale", 1))
{
/* Scale the output image by a fraction M/N. */
if (++argn >= argv.Length) /* advance to next argument */
return false;
int slashPos = argv[argn].IndexOf('/');
if (slashPos == -1)
return false;
try
{
string num = argv[argn].Substring(0, slashPos);
cinfo.Scale_num = int.Parse(num);
string denom = argv[argn].Substring(slashPos + 1);
cinfo.Scale_denom = int.Parse(denom);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
return false;
}
}
else /* bogus switch */
return false;
}
return true;
}