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Added new alpha channel colorspace constants/pixel formats, so applications can specify that they need the unused byte in a 4-component RGB output buffer set to 0xFF when decompressing.

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@732 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2011-12-19 02:21:03 +00:00
parent ab64b62c6b
commit 67ce3b2352
48 changed files with 487 additions and 104 deletions
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46
java/org/libjpegturbo/turbojpeg/TJ.java
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@@ -109,7 +109,7 @@ final public class TJ {
/**
* The number of pixel formats
*/
final public static int NUMPF = 7;
final public static int NUMPF = 11;
/**
* RGB pixel format. The red, green, and blue components in the image are
* stored in 3-byte pixels in the order R, G, B from lowest to highest byte
@@ -125,25 +125,29 @@ final public class TJ {
/**
* RGBX pixel format. The red, green, and blue components in the image are
* stored in 4-byte pixels in the order R, G, B from lowest to highest byte
* address within each pixel.
* address within each pixel. The X component is ignored when compressing
* and undefined when decompressing.
*/
final public static int PF_RGBX = 2;
/**
* BGRX pixel format. The red, green, and blue components in the image are
* stored in 4-byte pixels in the order B, G, R from lowest to highest byte
* address within each pixel.
* address within each pixel. The X component is ignored when compressing
* and undefined when decompressing.
*/
final public static int PF_BGRX = 3;
/**
* XBGR pixel format. The red, green, and blue components in the image are
* stored in 4-byte pixels in the order R, G, B from highest to lowest byte
* address within each pixel.
* address within each pixel. The X component is ignored when compressing
* and undefined when decompressing.
*/
final public static int PF_XBGR = 4;
/**
* XRGB pixel format. The red, green, and blue components in the image are
* stored in 4-byte pixels in the order B, G, R from highest to lowest byte
* address within each pixel.
* address within each pixel. The X component is ignored when compressing
* and undefined when decompressing.
*/
final public static int PF_XRGB = 5;
/**
@@ -151,6 +155,30 @@ final public class TJ {
* (brightness) level from 0 to 255.
*/
final public static int PF_GRAY = 6;
/**
* RGBA pixel format. This is the same as {@link #PF_RGBX}, except that when
* decompressing, the X byte is guaranteed to be 0xFF, which can be
* interpreted as an opaque alpha channel.
*/
final public static int PF_RGBA = 7;
/**
* BGRA pixel format. This is the same as {@link #PF_BGRX}, except that when
* decompressing, the X byte is guaranteed to be 0xFF, which can be
* interpreted as an opaque alpha channel.
*/
final public static int PF_BGRA = 8;
/**
* ABGR pixel format. This is the same as {@link #PF_XBGR}, except that when
* decompressing, the X byte is guaranteed to be 0xFF, which can be
* interpreted as an opaque alpha channel.
*/
final public static int PF_ABGR = 9;
/**
* ARGB pixel format. This is the same as {@link #PF_XRGB}, except that when
* decompressing, the X byte is guaranteed to be 0xFF, which can be
* interpreted as an opaque alpha channel.
*/
final public static int PF_ARGB = 10;
/**
@@ -167,7 +195,7 @@ final public class TJ {
}
final private static int pixelSize[] = {
3, 3, 4, 4, 4, 4, 1
3, 3, 4, 4, 4, 4, 1, 4, 4, 4, 4
};
@@ -189,7 +217,7 @@ final public class TJ {
}
final private static int redOffset[] = {
0, 2, 0, 2, 3, 1, 0
0, 2, 0, 2, 3, 1, 0, 0, 2, 3, 1
};
@@ -211,7 +239,7 @@ final public class TJ {
}
final private static int greenOffset[] = {
1, 1, 1, 1, 2, 2, 0
1, 1, 1, 1, 2, 2, 0, 1, 1, 2, 2
};
@@ -233,7 +261,7 @@ final public class TJ {
}
final private static int blueOffset[] = {
2, 0, 2, 0, 1, 3, 0
2, 0, 2, 0, 1, 3, 0, 2, 0, 1, 3
};