Picture Formats

Tony Castley tony at castley.net
Mon Apr 1 16:24:50 CEST 2002 

I am trying to implement Overlay support in BeOS.  Now most cards/
drivers in BeOS report that they can overlay the color_space YCbCr422.  
In the past the overlay was achieved with by doing the following 
"p_vout->b_YCbr = true".  Are any of the existing "FOURCC_*" chromas 
the same?  If not can someone have a look at the following extract 
fromt the BeOS header file and mark the settings that are the same.


Thanks

Tony Castley

typedef enum
{
	B_NO_COLOR_SPACE =	0x0000,	/* byte in memory order, high bit first				
*/
	
	/* linear color space (little endian is the default) */
	B_RGB32 = 			0x0008,	/* B[7:0]  G[7:0]  R[7:0]  -[7:0]					
*/
	B_RGBA32 = 			0x2008,	/* B[7:0]  G[7:0]  R[7:0]  A[7:0]					
*/
	B_RGB24 = 			0x0003,	/* B[7:0]  G[7:0]  R[7:0]							
*/
	B_RGB16 = 			0x0005,	/* G[2:0],B[4:0]  R[4:0],G[5:3]						
*/
	B_RGB15 = 			0x0010,	/* G[2:0],B[4:0]  	   -
[0],R[4:0],G[4:3]			*/
	B_RGBA15 = 			0x2010,	/* G[2:0],B[4:0]  	   
A[0],R[4:0],G[4:3]			*/
	B_CMAP8 = 			0x0004,	/* D[7:0]  											
*/
	B_GRAY8 = 			0x0002,	/* Y[7:0]											
*/
	B_GRAY1 = 			0x0001,	/* 
Y0[0],Y1[0],Y2[0],Y3[0],Y4[0],Y5[0],Y6[0],Y7[0]	*/

	/* big endian version, when the encoding is not endianess 
independant */
	B_RGB32_BIG =		0x1008,	/* -[7:0]  R[7:0]  G[7:0]  B[7:0]					
*/
	B_RGBA32_BIG = 		0x3008,	/* A[7:0]  R[7:0]  G[7:0]  B[7:0]					
*/
	B_RGB24_BIG = 		0x1003,	/* R[7:0]  G[7:0]  B[7:0]							
*/
	B_RGB16_BIG = 		0x1005,	/* R[4:0],G[5:3]  G[2:0],B[4:0]						
*/
	B_RGB15_BIG = 		0x1010,	/* -[0],R[4:0],G[4:3]  G[2:0],B[4:0]				
*/
	B_RGBA15_BIG = 		0x3010,	/* A[0],R[4:0],G[4:3]  G[2:0],B[4:0]				
*/

	/* little-endian declarations, for completness */
	B_RGB32_LITTLE = 	B_RGB32,
	B_RGBA32_LITTLE =	B_RGBA32,
	B_RGB24_LITTLE =	B_RGB24,
	B_RGB16_LITTLE =	B_RGB16,
	B_RGB15_LITTLE =	B_RGB15,
	B_RGBA15_LITTLE =	B_RGBA15,

	/* non linear color space -- note that these are here for exchange 
purposes;	*/
	/* a BBitmap or BView may not necessarily support all these color 
spaces.	*/

	/* Loss/Saturation points are Y 16-235 (absoulte); Cb/Cr 16-240 
(center 128) */

	B_YCbCr422 = 		0x4000,	/* Y0[7:0]  Cb0[7:0]  Y1[7:0]  Cr0[7:0]  
Y2[7:0]...	*/
								/* Cb2[7:0]  Y3[7:0]  Cr2[7:0]						
*/
	B_YCbCr411 = 		0x4001,	/* Cb0[7:0]  Y0[7:0]  Cr0[7:0]  Y1[7:0]  
Cb4[7:0]...*/
								/* Y2[7:0]  Cr4[7:0]  Y3[7:0]  Y4[7:0]  
Y5[7:0]...	*/
								/* Y6[7:0]  Y7[7:0]	 								
*/
	B_YCbCr444 = 		0x4003,	/* Y0[7:0]  Cb0[7:0]  Cr0[7:0]		*/
	B_YCbCr420 = 		0x4004,	/* Non-interlaced only, Cb0  Y0  Y1  
Cb2 Y2  Y3  on even scan lines ... */
								/* Cr0  Y0  Y1  Cr2 Y2  Y3  on odd scan 
lines */

	/* Extrema points are Y 0 - 207 (absolute) U -91 - 91 (offset 128) 
V -127 - 127 (offset 128) */
	/* note that YUV byte order is different from YCbCr */
	/* USE YCbCr, not YUV, when that's what you mean! */
	B_YUV422 =			0x4020, /* U0[7:0]  Y0[7:0]   V0[7:0]  Y1[7:0] 
.. */
								/* U2[7:0]  Y2[7:0]   V2[7:0]  Y3[7:0]  
*/
	B_YUV411 =			0x4021, /* U0[7:0]  Y0[7:0]  Y1[7:0]  V0[7:0]  
Y2[7:0]  Y3[7:0]  */
								/* U4[7:0]  Y4[7:0]  Y5[7:0]  V4[7:0]  
Y6[7:0]  Y7[7:0]  */
	B_YUV444 =			0x4023,	/* U0[7:0]  Y0[7:0]  V0[7:0]  U1[7:0]  
Y1[7:0]  V1[7:0] */
	B_YUV420 = 			0x4024,	/* Non-interlaced only, U0  Y0  Y1  U2 
Y2  Y3  on even scan lines ... */
								/* V0  Y0  Y1  V2 Y2  Y3  on odd scan 
lines */
	B_YUV9 = 			0x402C,	/* planar?	410?								
*/
	B_YUV12 = 			0x402D,	/* planar?	420?								
*/

	B_UVL24 =			0x4030,	/* U0[7:0] V0[7:0] L0[7:0] ... */
	B_UVL32 =			0x4031,	/* U0[7:0] V0[7:0] L0[7:0] X0[7:0]... *
/
	B_UVLA32 =			0x6031,	/* U0[7:0] V0[7:0] L0[7:0] A0[7:0]... *
/

	B_LAB24 =			0x4032,	/* L0[7:0] a0[7:0] b0[7:0] ...  (a is 
not alpha!) */
	B_LAB32 =			0x4033,	/* L0[7:0] a0[7:0] b0[7:0] X0[7:0] ... 
(b is not alpha!) */
	B_LABA32 =			0x6033,	/* L0[7:0] a0[7:0] b0[7:0] A0[7:0] ... 
(A is alpha) */

	/* red is at hue = 0 */

	B_HSI24 =			0x4040,	/* H[7:0]  S[7:0]  I[7:0]							
*/
	B_HSI32 =			0x4041,	/* H[7:0]  S[7:0]  I[7:0]  X[7:0]					
*/
	B_HSIA32 =			0x6041,	/* H[7:0]  S[7:0]  I[7:0]  A[7:0]					
*/

	B_HSV24 =			0x4042,	/* H[7:0]  S[7:0]  V[7:0]							
*/
	B_HSV32 =			0x4043,	/* H[7:0]  S[7:0]  V[7:0]  X[7:0]					
*/
	B_HSVA32 =			0x6043,	/* H[7:0]  S[7:0]  V[7:0]  A[7:0]					
*/

	B_HLS24 =			0x4044,	/* H[7:0]  L[7:0]  S[7:0]							
*/
	B_HLS32 =			0x4045,	/* H[7:0]  L[7:0]  S[7:0]  X[7:0]					
*/
	B_HLSA32 =			0x6045,	/* H[7:0]  L[7:0]  S[7:0]  A[7:0]					
*/

	B_CMY24 =			0xC001,	/* C[7:0]  M[7:0]  Y[7:0]  			No 
gray removal done		*/
	B_CMY32 =			0xC002,	/* C[7:0]  M[7:0]  Y[7:0]  X[7:0]	No 
gray removal done		*/
	B_CMYA32 =			0xE002,	/* C[7:0]  M[7:0]  Y[7:0]  A[7:0]	No 
gray removal done		*/
	B_CMYK32 =			0xC003,	/* C[7:0]  M[7:0]  Y[7:0]  K[7:0]					
*/

	/* compatibility declarations */
	B_MONOCHROME_1_BIT = 	B_GRAY1,
	B_GRAYSCALE_8_BIT =		B_GRAY8,
	B_COLOR_8_BIT =			B_CMAP8,
	B_RGB_32_BIT =			B_RGB32,
	B_RGB_16_BIT =			B_RGB15,
	B_BIG_RGB_32_BIT =		B_RGB32_BIG,
	B_BIG_RGB_16_BIT =		B_RGB15_BIG
} color_space;



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