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- /***********************************************************
- Copyright 1991, 1992, 1993, 1994 by Stichting Mathematisch Centrum,
- Amsterdam, The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior permission.
-
- STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
- THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
- FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
- OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- #ifndef Py_YUV_H
- #define Py_YUV_H
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /*
- * SVideo YUV 4:1:1 format.
- *
- * 4 consecutive quadwords describe 8 pixels on 2 lines, as depicted
- * below. An array of (width/4) of the below structure describes 2
- * scan lines.
- *
- * +-------------------+
- * | 00 | 01 | 02 | 03 | . . .
- * +-------------------+
- * | 10 | 11 | 12 | 13 | . . .
- * +-------------------+
- */
- struct yuv411 {
- struct {
- unsigned int dummy:8;
- unsigned int y0:8;
- unsigned int u0:2;
- unsigned int v0:2;
- unsigned int y1:8;
- unsigned int u1:2;
- unsigned int v1:2;
- } v[4];
- };
-
- #define YUV411_Y00(y) (y).v[0].y0
- #define YUV411_Y01(y) (y).v[1].y0
- #define YUV411_Y02(y) (y).v[2].y0
- #define YUV411_Y03(y) (y).v[3].y0
- #define YUV411_Y10(y) (y).v[0].y1
- #define YUV411_Y11(y) (y).v[1].y1
- #define YUV411_Y12(y) (y).v[2].y1
- #define YUV411_Y13(y) (y).v[3].y1
- #define YUV411_U00(y) ((y).v[0].u0<<6|(y).v[1].u0<<4|(y).v[2].u0<<2|(y).v[3].u0)
- #define YUV411_U01(y) YUV411_U00(y)
- #define YUV411_U02(y) YUV411_U00(y)
- #define YUV411_U03(y) YUV411_U00(y)
- #define YUV411_U10(y) ((y).v[0].u1<<6|(y).v[1].u1<<4|(y).v[2].u1<<2|(y).v[3].u1)
- #define YUV411_U11(y) YUV411_U10(y)
- #define YUV411_U12(y) YUV411_U10(y)
- #define YUV411_U13(y) YUV411_U10(y)
- #define YUV411_V00(y) ((y).v[0].v0<<6|(y).v[1].v0<<4|(y).v[2].v0<<2|(y).v[3].v0)
- #define YUV411_V01(y) YUV411_V00(y)
- #define YUV411_V02(y) YUV411_V00(y)
- #define YUV411_V03(y) YUV411_V00(y)
- #define YUV411_V10(y) ((y).v[0].v1<<6|(y).v[1].v1<<4|(y).v[2].v1<<2|(y).v[3].v1)
- #define YUV411_V11(y) YUV411_V10(y)
- #define YUV411_V12(y) YUV411_V10(y)
- #define YUV411_V13(y) YUV411_V10(y)
-
- /*
- * Compression Library YUV 4:2:2 format.
- *
- * 1 longword describes 2 pixels.
- *
- * +-------+
- * | 0 | 1 |
- * +-------+
- */
- struct yuv422 {
- unsigned int u:8;
- unsigned int y0:8;
- unsigned int v:8;
- unsigned int y1:8;
- };
- #define YUV422_Y0(y) (y).y0
- #define YUV422_Y1(y) (y).y1
- #define YUV422_U0(y) (y).u
- #define YUV422_U1(y) (y).u
- #define YUV422_V0(y) (y).v
- #define YUV422_V1(y) (y).v
-
- /*
- * Compression library YUV 4:2:2 Duplicate Chroma format.
- *
- * This is like the previous format, but the U and V values are
- * duplicated vertically (and hence there is some redundancy in the
- * data). With other words, lines 2*n and 2*n+1 have the same U and V
- * values but different Y values.
- */
-
- /*
- * Conversion functions.
- */
- void yuv_sv411_to_cl422dc(int, void *, void *, int, int);
- void yuv_sv411_to_cl422dc_quartersize(int, void *, void *, int, int);
- void yuv_sv411_to_cl422dc_sixteenthsize(int, void *, void *, int, int);
-
- #ifdef __cplusplus
- }
- #endif
- #endif /* !Py_YUV_H */
-