I build several files by using the cut command to grab select fields(columns) from a really bid csv file. Each file is one column of data. I then put them together using paste command. Here is the code built in tcsh:
cut -d , -f 1 some.csv > 1.csv
cut -d , -f 10 some.csv > 10.csv
paste 1.csv... (2 Replies)
Hi Guys,
I need a help. I have 1130 zip files. Each one of them has files including 1 html file with long file name (includes special charactors, Alphabetic and numbers).
I have copied all 1130 zip files to my linux system and extracted using below command.
Find . -name "*.zip" -exec... (7 Replies)
I need help finding a file through terminal and then renaming it automatically.
Here is what I have so far to find the file:
cd /User/Applications
find . */SourceM.app/banner.png | while read line; do mv "$line" banner-.png; done
I want the script to rename the file "banner.png" to... (6 Replies)
I want to find a file say IIFT and check its size is zero or not. If its zero then I have to rename anothe file say WWFT , which is in another folder to WWFT$Todaysdate.
I tried below command:
cd dir2 (*File WWFT is in dir2)
find dir/ -type f -name 'IIFT*' -size 0 -exec mv WWFT... (3 Replies)
Hi Guys,
I have folder called /input/temp. Inside the folder I have lot of files. I need to find the file of pattern Article_????_test_?????????.txt and replace by format below.
Article_????_?????????.txt
Below is the one which I tried but it doesn't works can you please help us.... (4 Replies)
hi,
Need your help.
I need to write a script for below..
i have two files in directory /home/abc as below:
Watch_20140203_abc.dat
Watchnow_20140203_abc.dat
I have to copy this file from
/home/abc to /home01/home02
after that i have to rename the date part in above two files... (1 Reply)
Have a file in this format This is line one ; line_one
This is line two ; line_two
This is line three ; line_three
This is line four ; line four. I'm trying to make each line a new file called line_one
line_two
line_three
line_four. Tried using split -1 but then I'm back needing to rename... (3 Replies)
Hello Forum.
I have a file called abc.sed with the following commands;
s/1/one/g
s/2/two/g
...
I also have a second file called abc.dat and would like to substitute all occurrences of "1 with one", "2 with two", etc and create a new file called abc_new.dat
sed -f abc.sed abc.dat >... (10 Replies)
Hi,
I have a directory which contains multiple files with .txt extension, i want to rename all these file to .bak extension using find command, this is what i've tried, please help me to correct this :
find /home/application/test -name '*.txt' -exec rename 's/txt/bak/' {} \;
seems to... (8 Replies)
Hi All,
I am having below sample data in a file.
I need to find all the line form this file with word ABC and i need to replace the characters at position 120 which is "CO:BOGFDUI"(30chars) in the lines with blank space.
I have tried using grep to find the word with ABC (grep ABC filename),... (3 Replies)
Discussion started by: abhi_123
3 Replies
LEARN ABOUT OPENSOLARIS
sdl_pixelformat
SDL_PixelFormat(3) SDL API Reference SDL_PixelFormat(3)NAME
SDL_PixelFormat - Stores surface format information
STRUCTURE DEFINITION
typedef struct SDL_PixelFormat {
SDL_Palette *palette;
Uint8 BitsPerPixel;
Uint8 BytesPerPixel;
Uint8 Rloss, Gloss, Bloss, Aloss;
Uint8 Rshift, Gshift, Bshift, Ashift;
Uint32 Rmask, Gmask, Bmask, Amask;
Uint32 colorkey;
Uint8 alpha;
} SDL_PixelFormat;
STRUCTURE DATA
palette Pointer to the palette, or NULL if the BitsPerPixel>8
BitsPerPixel The number of bits used to represent each pixel in a surface. Usually 8, 16, 24 or 32.
BytesPerPixel The number of bytes used to represent each pixel in a surface. Usually one to four.
[RGBA]mask Binary mask used to retrieve individual color values
[RGBA]loss Precision loss of each color component (2^[RGBA]loss)
[RGBA]shift Binary left shift of each color component in the pixel value
colorkey Pixel value of transparent pixels
alpha Overall surface alpha value
DESCRIPTION
A SDL_PixelFormat describes the format of the pixel data stored at the pixels field of a SDL_Surface. Every surface stores a SDL_PixelFor-
mat in the format field.
If you wish to do pixel level modifications on a surface, then understanding how SDL stores its color information is essential.
8-bit pixel formats are the easiest to understand. Since its an 8-bit format, we have 8 BitsPerPixel and 1 BytesPerPixel. Since BytesPer-
Pixel is 1, all pixels are represented by a Uint8 which contains an index into palette->colors. So, to determine the color of a pixel in a
8-bit surface: we read the color index from surface->pixels and we use that index to read the SDL_Color structure from surface->for-
mat->palette->colors. Like so:
SDL_Surface *surface;
SDL_PixelFormat *fmt;
SDL_Color *color;
Uint8 index;
.
.
/* Create surface */
.
.
fmt=surface->format;
/* Check the bitdepth of the surface */
if(fmt->BitsPerPixel!=8){
fprintf(stderr, "Not an 8-bit surface.
");
return(-1);
}
/* Lock the surface */
SDL_LockSurface(surface);
/* Get the topleft pixel */
index=*(Uint8 *)surface->pixels;
color=fmt->palette->colors[index];
/* Unlock the surface */
SDL_UnlockSurface(surface);
printf("Pixel Color-> Red: %d, Green: %d, Blue: %d. Index: %d
",
color->r, color->g, color->b, index);
.
.
Pixel formats above 8-bit are an entirely different experience. They are considered to be "TrueColor" formats and the color information is
stored in the pixels themselves, not in a palette. The mask, shift and loss fields tell us how the color information is encoded. The mask
fields allow us to isolate each color component, the shift fields tell us the number of bits to the right of each component in the pixel
value and the loss fields tell us the number of bits lost from each component when packing 8-bit color component in a pixel.
/* Extracting color components from a 32-bit color value */
SDL_PixelFormat *fmt;
SDL_Surface *surface;
Uint32 temp, pixel;
Uint8 red, green, blue, alpha;
.
.
.
fmt=surface->format;
SDL_LockSurface(surface);
pixel=*((Uint32*)surface->pixels);
SDL_UnlockSurface(surface);
/* Get Red component */
temp=pixel&fmt->Rmask; /* Isolate red component */
temp=temp>>fmt->Rshift;/* Shift it down to 8-bit */
temp=temp<<fmt->Rloss; /* Expand to a full 8-bit number */
red=(Uint8)temp;
/* Get Green component */
temp=pixel&fmt->Gmask; /* Isolate green component */
temp=temp>>fmt->Gshift;/* Shift it down to 8-bit */
temp=temp<<fmt->Gloss; /* Expand to a full 8-bit number */
green=(Uint8)temp;
/* Get Blue component */
temp=pixel&fmt->Bmask; /* Isolate blue component */
temp=temp>>fmt->Bshift;/* Shift it down to 8-bit */
temp=temp<<fmt->Bloss; /* Expand to a full 8-bit number */
blue=(Uint8)temp;
/* Get Alpha component */
temp=pixel&fmt->Amask; /* Isolate alpha component */
temp=temp>>fmt->Ashift;/* Shift it down to 8-bit */
temp=temp<<fmt->Aloss; /* Expand to a full 8-bit number */
alpha=(Uint8)temp;
printf("Pixel Color -> R: %d, G: %d, B: %d, A: %d
", red, green, blue, alpha);
.
.
.
SEE ALSO
SDL_Surface, SDL_MapRGB
SDL Tue 11 Sep 2001, 23:01 SDL_PixelFormat(3)