yuvalpha.c
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: yuvalpha.c,v 1.2.36.1 2004/07/09 02:00:19 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "env.h"
- #include "yuvalpha.h"
- #ifdef _USE_MMX_BLENDERS
- //MMX alphablending only available on linux and windows right now.
- //Should work just fine on any IA plaform though (intel solaris for example)
- #include "mmx_util.h" //for checkMmxAvailablity()
- BOOL z_bMMXAvailable = FALSE;
- BOOL z_bCheckedForMMX = FALSE;
- #endif
- /////////////////////////////////////////////////////////////
- // Note: Output buffer can be the same as one of the input
- // buffers for I420 and YV12 output only. Common
- // input/output buffer must have same pitch and lines
- // width and height.
- /////////////////////////////////////////////////////////////
- /////////////////////////////////////////////////////////////
- //
- // Define the bit offsets for components in both
- // YUY2 and UYVU color formats.
- //
- /////////////////////////////////////////////////////////////
- #if BYTE_ORDER == LITTLE_ENDIAN
- // YUY2
- #define YUY2_Y0_SHIFT 0
- #define YUY2_U_SHIFT 8
- #define YUY2_Y1_SHIFT 16
- #define YUY2_V_SHIFT 24
- // UYVY
- #define UYVY_U_SHIFT 0
- #define UYVY_Y0_SHIFT 8
- #define UYVY_V_SHIFT 16
- #define UYVY_Y1_SHIFT 24
- #else /* BYTE_ORDER != LITTLE_ENDIAN */
- // YUY2
- #define YUY2_Y0_SHIFT 24
- #define YUY2_U_SHIFT 16
- #define YUY2_Y1_SHIFT 8
- #define YUY2_V_SHIFT 0
- // UYVY
- #define UYVY_U_SHIFT 24
- #define UYVY_Y0_SHIFT 16
- #define UYVY_V_SHIFT 8
- #define UYVY_Y1_SHIFT 0
- #endif
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVAtoI420orYV12
- //
- // This function alpha-blends two I420 buffers into a third
- // I420 or YV12 buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- // The alpha used for chroma is merely one (lower-right) of
- // the alpha used in the corresponding 2x2 luma pels.
- //
- /////////////////////////////////////////////////////////////
- int I420andYUVAtoI420orYV12 (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height, int output_format)
- {
- int i, j;
- unsigned char *sy1, *su1, *sv1;
- unsigned char *sy2, *su2, *sv2, *sa2;
- unsigned char *dy, *du, *dv;
- // Initialize color plane pointers to beginning of image
- sy1 = src1_ptr;
- su1 = src1_ptr + src1_lines * src1_pitch;
- sv1 = su1 + src1_lines * src1_pitch / 4;
- sy2 = src2_ptr;
- su2 = src2_ptr + src2_lines * src2_pitch;
- sv2 = su2 + src2_lines * src2_pitch / 4;
- sa2 = sv2 + src2_lines * src2_pitch / 4;
- dy = dest_ptr;
- if (output_format == CID_I420)
- {
- du = dest_ptr + dest_lines * dest_pitch;
- dv = du + dest_lines * dest_pitch / 4;
- }
- else if (output_format == CID_YV12)
- {
- dv = dest_ptr + dest_lines * dest_pitch;
- du = dv + dest_lines * dest_pitch / 4;
- }
- else
- {
- return -1;
- }
- // Move color plane pointers to start points
- sy1 += src1_starty * src1_pitch + src1_startx;
- su1 += (src1_starty * src1_pitch / 4) + src1_startx / 2;
- sv1 += (src1_starty * src1_pitch / 4) + src1_startx / 2;
- sy2 += src2_starty * src2_pitch + src2_startx;
- su2 += (src2_starty * src2_pitch / 4) + src2_startx / 2;
- sv2 += (src2_starty * src2_pitch / 4) + src2_startx / 2;
- sa2 += src2_starty * src2_pitch + src2_startx;
- dy += dest_starty * dest_pitch + dest_startx;
- du += (dest_starty * dest_pitch / 4) + dest_startx / 2;
- dv += (dest_starty * dest_pitch / 4) + dest_startx / 2;
- for (i = 0; i < height; i += 2)
- {
- // First line
- for (j = 0; j < width - 3; j += 4)
- {
- int x1, x2;
-
- // Y
- x1 = *(sy1 + 0);
- x2 = *(sy2 + 0);
- x1 -= x2;
- x1 *= *(sa2 + 0);
- x1 >>= 8;
- x1 += x2;
- *(dy + 0) = x1;
- x1 = *(sy1 + 1);
- x2 = *(sy2 + 1);
- x1 -= x2;
- x1 *= *(sa2 + 1);
- x1 >>= 8;
- x1 += x2;
- *(dy + 1) = x1;
- x1 = *(sy1 + 2);
- x2 = *(sy2 + 2);
- x1 -= x2;
- x1 *= *(sa2 + 2);
- x1 >>= 8;
- x1 += x2;
- *(dy + 2) = x1;
- x1 = *(sy1 + 3);
- x2 = *(sy2 + 3);
- x1 -= x2;
- x1 *= *(sa2 + 3);
- x1 >>= 8;
- x1 += x2;
- *(dy + 3) = x1;
- sy1 += 4;
- sy2 += 4;
- sa2 += 4;
- dy += 4;
- }
- while (j < width)
- {
- int x1, x2;
-
- // Y
- x1 = *sy1++;
- x2 = *sy2++;
- x1 -= x2;
- x1 *= *sa2++;
- x1 >>= 8;
- x1 += x2;
- *dy++ = x1;
- j++;
- }
- // move to next line
- sy1 += src1_pitch - width;
- sy2 += src2_pitch - width;
- sa2 += src2_pitch - width;
- dy += dest_pitch - width;
- // Second line
- for (j = 0; j < width; j += 2)
- {
- int x1, x2, x1b, a;
-
- // Y
- x1 = *(sy1 + 0);
- x2 = *(sy2 + 0);
- x1 -= x2;
- x1 *= *(sa2 + 0);
- x1 >>= 8;
- x1 += x2;
- *(dy + 0) = x1;
- // Y
- x1 = *(sy1 + 1);
- x2 = *(sy2 + 1);
- x1 -= x2;
- a = *(sa2 + 1);
- x1 *= a;
- x1 >>= 8;
- x1 += x2;
- *(dy + 1) = x1;
- //We need to do something with the four alpha values
- //and this chroma value. We can average/mean/max/min?????
- //Avaerage alpha values....
- a += *(sa2+0);
- a += *((sa2-src2_pitch)+0);
- a += *((sa2-src2_pitch)+1);
- a >>= 2;
-
- //Max/Min?
- //a = max( *(sa2+0), *(sa2+1));
- sy1 += 2;
- sy2 += 2;
- sa2 += 2;
- dy += 2;
- // U
- x1 = *su1++;
- x2 = *su2++;
- x1 -= x2;
- x1 *= a;
- x1 >>= 8;
- x1 += x2;
- // V
- x1b = *sv1++;
- x2 = *sv2++;
- x1b -= x2;
- x1b *= a;
- x1b >>= 8;
- x1b += x2;
- *du++ = x1; // postpone store to allow inplace YV12
- *dv++ = x1b;
- }
- // move to next line
- sy1 += src1_pitch - width;
- su1 += (src1_pitch - width) / 2;
- sv1 += (src1_pitch - width) / 2;
- sy2 += src2_pitch - width;
- su2 += (src2_pitch - width) / 2;
- sv2 += (src2_pitch - width) / 2;
- sa2 += src2_pitch - width;
- dy += dest_pitch - width;
- du += (dest_pitch - width) / 2;
- dv += (dest_pitch - width) / 2;
-
- /* sy1 = src1_ptr; */
- /* su1 = src1_ptr + src1_lines * src1_pitch; */
- /* sv1 = su1 + src1_lines * src1_pitch / 4; */
-
- /* sy2 = src2_ptr; */
- /* su2 = src2_ptr + src2_lines * src2_pitch; */
- /* sv2 = su2 + src2_lines * src2_pitch / 4; */
- /* sa2 = sv2 + src2_lines * src2_pitch / 4; */
- /* dy = dest_ptr; */
-
- /* if (output_format == CID_I420) */
- /* { */
- /* du = dest_ptr + dest_lines * dest_pitch; */
- /* dv = du + dest_lines * dest_pitch / 4; */
- /* } */
- /* else if (output_format == CID_YV12) */
- /* { */
- /* dv = dest_ptr + dest_lines * dest_pitch; */
- /* du = dv + dest_lines * dest_pitch / 4; */
- /* } */
-
- /* sy1 += (src1_starty+i) * src1_pitch + src1_startx; */
- /* su1 += ((src1_starty+i) * src1_pitch / 4) + src1_startx / 2; */
- /* sv1 += ((src1_starty+i) * src1_pitch / 4) + src1_startx / 2; */
-
- /* sy2 += (src2_starty+i) * src2_pitch + src2_startx; */
- /* su2 += ((src2_starty+i) * src2_pitch / 4) + src2_startx / 2; */
- /* sv2 += ((src2_starty+i) * src2_pitch / 4) + src2_startx / 2; */
- /* sa2 += (src2_starty+i) * src2_pitch + src2_startx; */
-
- /* dy += (dest_starty+i) * dest_pitch + dest_startx; */
- /* du += ((dest_starty+i) * dest_pitch / 4) + dest_startx / 2; */
- /* dv += ((dest_starty+i) * dest_pitch / 4) + dest_startx / 2; */
- }
- return 0;
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVAtoYUY2
- //
- // This function alpha-blends two I420 buffers into a third
- // YUY2 buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- /////////////////////////////////////////////////////////////
- int I420andYUVAtoYUY2 (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height)
- {
- int i, j;
- unsigned char *sy11, *sy12, *su1, *sv1;
- unsigned char *sy21, *sy22, *su2, *sv2, *sa21, *sa22;
- unsigned int *dst1, *dst2;
- sy11 = src1_ptr;
- su1 = src1_ptr + src1_lines * src1_pitch;
- sv1 = su1 + src1_lines * src1_pitch / 4;
- sy21 = src2_ptr;
- su2 = src2_ptr + src2_lines * src2_pitch;
- sv2 = su2 + src2_lines * src2_pitch / 4;
- sa21 = sv2 + src2_lines * src2_pitch / 4;
- dst1 = (unsigned int *)(dest_ptr);
- // Move color planes to start point
- sy11 += src1_starty * src1_pitch + src1_startx;
- sy12 = sy11 + src1_pitch;
- su1 += src1_starty * src1_pitch / 4 + src1_startx / 2;
- sv1 += src1_starty * src1_pitch / 4 + src1_startx / 2;
- sy21 += src2_starty * src2_pitch + src2_startx;
- sy22 = sy21 + src2_pitch;
- su2 += src2_starty * src2_pitch / 4 + src2_startx / 2;
- sv2 += src2_starty * src2_pitch / 4 + src2_startx / 2;
- sa21 += src2_starty * src2_pitch + src2_startx;
- sa22 = sa21 + src2_pitch;
- dst1 += dest_starty * dest_pitch / 4 + dest_startx / 2;
- dst2 = dst1 + dest_pitch / 4;
- for (i = 0; i < height / 2; i++)
- {
- for (j = 0; j < width / 2; j++)
- {
- int x1, x2, a1, a2, d;
- int u1, u2, v1, v2;
-
- // First line
- // Y0
- x1 = *(sy11 + 0);
- x2 = *(sy21 + 0);
- x1 -= x2;
- a1 = *(sa21 + 0);
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d = (x1 << YUY2_Y0_SHIFT);
- // Y1
- x1 = *(sy11 + 1);
- x2 = *(sy21 + 1);
- x1 -= x2;
- a2 = *(sa21 + 1);
- x1 *= a2;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << YUY2_Y1_SHIFT);
- sy11 += 2;
- sy21 += 2;
- sa21 += 2;
- // Average Alphas
- a1 += a2;
- a1 >>= 1;
- // U
- x1 = u1 = *su1;
- x2 = u2 = *su2;
- x1 -= x2;
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << YUY2_U_SHIFT);
- // V
- x1 = v1 = *sv1;
- x2 = v2 = *sv2;
- x1 -= x2;
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << YUY2_V_SHIFT);
- su1++;
- su2++;
- sv1++;
- sv2++;
- // Store YUY2 pel
- *dst1++ = d;
- // Second line
- // Y0
- x1 = *(sy12 + 0);
- x2 = *(sy22 + 0);
- x1 -= x2;
- a1 = *(sa22 + 0);
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d = (x1 << YUY2_Y0_SHIFT);
- // Y1
- x1 = *(sy12 + 1);
- x2 = *(sy22 + 1);
- x1 -= x2;
- a2 = *(sa22 + 1);
- x1 *= a2;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << YUY2_Y1_SHIFT);
- sy12 += 2;
- sy22 += 2;
- sa22 += 2;
- // Average Alphas
- a1 += a2;
- a1 >>= 1;
- // U
- u1 -= u2;
- u1 *= a1;
- u1 >>= 8;
- u1 += u2;
- d |= (u1 << YUY2_U_SHIFT);
- // V
- v1 -= v2;
- v1 *= a1;
- v1 >>= 8;
- v1 += v2;
- d |= (v1 << YUY2_V_SHIFT);
- // Store YUY2 pel
- *dst2++ = d;
- }
- // move down two lines
- sy11 += 2 * src1_pitch - width;
- sy12 += 2 * src1_pitch - width;
- su1 += (src1_pitch - width) / 2;
- sv1 += (src1_pitch - width) / 2;
- sy21 += 2 * src2_pitch - width;
- sy22 += 2 * src2_pitch - width;
- su2 += (src2_pitch - width) / 2;
- sv2 += (src2_pitch - width) / 2;
- sa21 += 2 * src2_pitch - width;
- sa22 += 2 * src2_pitch - width;
- dst1 += (dest_pitch / 2) - (width / 2);
- dst2 += (dest_pitch / 2) - (width / 2);
- }
- return 0;
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVAtoUYVY
- //
- // This function alpha-blends two I420 buffers into a third
- // UYVY buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- /////////////////////////////////////////////////////////////
- int I420andYUVAtoUYVY (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height)
- {
- int i, j;
- unsigned char *sy11, *sy12, *su1, *sv1;
- unsigned char *sy21, *sy22, *su2, *sv2, *sa21, *sa22;
- unsigned int *dst1, *dst2;
- // Initialize color plane pointers
- sy11 = src1_ptr;
- su1 = src1_ptr + src1_lines * src1_pitch;
- sv1 = su1 + src1_lines * src1_pitch / 4;
- sy21 = src2_ptr;
- su2 = src2_ptr + src2_lines * src2_pitch;
- sv2 = su2 + src2_lines * src2_pitch / 4;
- sa21 = sv2 + src2_lines * src2_pitch / 4;
- dst1 = (unsigned int *)(dest_ptr);
- // Move color planes to start point
- sy11 += src1_starty * src1_pitch + src1_startx;
- sy12 = sy11 + src1_pitch;
- su1 += src1_starty * src1_pitch / 4 + src1_startx / 2;
- sv1 += src1_starty * src1_pitch / 4 + src1_startx / 2;
- sy21 += src2_starty * src2_pitch + src2_startx;
- sy22 = sy21 + src2_pitch;
- su2 += src2_starty * src2_pitch / 4 + src2_startx / 2;
- sv2 += src2_starty * src2_pitch / 4 + src2_startx / 2;
- sa21 += src2_starty * src2_pitch + src2_startx;
- sa22 = sa21 + src2_pitch;
- dst1 += dest_starty * dest_pitch / 4 + dest_startx / 2;
- dst2 = dst1 + dest_pitch / 4;
- for (i = 0; i < height / 2; i++)
- {
- for (j = 0; j < width / 2; j++)
- {
- int x1, x2, a1, a2, d;
- int u1, u2, v1, v2;
-
- // First line
- // Y0
- x1 = *(sy11 + 0);
- x2 = *(sy21 + 0);
- x1 -= x2;
- a1 = *(sa21 + 0);
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d = (x1 << UYVY_Y0_SHIFT);
- // Y1
- x1 = *(sy11 + 1);
- x2 = *(sy21 + 1);
- x1 -= x2;
- a2 = *(sa21 + 1);
- x1 *= a2;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << UYVY_Y1_SHIFT);
- sy11 += 2;
- sy21 += 2;
- sa21 += 2;
- // Average Alphas
- a1 += a2;
- a1 >>= 1;
- // U
- x1 = u1 = *su1;
- x2 = u2 = *su2;
- x1 -= x2;
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << UYVY_U_SHIFT);
- // V
- x1 = v1 = *sv1;
- x2 = v2 = *sv2;
- x1 -= x2;
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << UYVY_V_SHIFT);
- su1++;
- su2++;
- sv1++;
- sv2++;
- // Store YUY2 pel
- *dst1++ = d;
- // Second line
- // Y0
- x1 = *(sy12 + 0);
- x2 = *(sy22 + 0);
- x1 -= x2;
- a1 = *(sa22 + 0);
- x1 *= a1;
- x1 >>= 8;
- x1 += x2;
- d = (x1 << UYVY_Y0_SHIFT);
- // Y1
- x1 = *(sy12 + 1);
- x2 = *(sy22 + 1);
- x1 -= x2;
- a2 = *(sa22 + 1);
- x1 *= a2;
- x1 >>= 8;
- x1 += x2;
- d |= (x1 << UYVY_Y1_SHIFT);
- sy12 += 2;
- sy22 += 2;
- sa22 += 2;
- // Average Alphas
- a1 += a2;
- a1 >>= 1;
- // U
- u1 -= u2;
- u1 *= a1;
- u1 >>= 8;
- u1 += u2;
- d |= (u1 << UYVY_U_SHIFT);
- // V
- v1 -= v2;
- v1 *= a1;
- v1 >>= 8;
- v1 += v2;
- d |= (v1 << UYVY_V_SHIFT);
- // Store YUY2 pel
- *dst2++ = d;
- }
- // move down two lines
- sy11 += 2 * src1_pitch - width;
- sy12 += 2 * src1_pitch - width;
- su1 += (src1_pitch - width) / 2;
- sv1 += (src1_pitch - width) / 2;
- sy21 += 2 * src2_pitch - width;
- sy22 += 2 * src2_pitch - width;
- su2 += (src2_pitch - width) / 2;
- sv2 += (src2_pitch - width) / 2;
- sa21 += 2 * src2_pitch - width;
- sa22 += 2 * src2_pitch - width;
- dst1 += (dest_pitch / 2) - (width / 2);
- dst2 += (dest_pitch / 2) - (width / 2);
- }
- return 0;
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVAtoI420
- //
- // This function alpha-blends two I420 buffers into a third
- // I420 buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- /////////////////////////////////////////////////////////////
- int I420andYUVAtoI420 (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height)
- {
-
- return I420andYUVAtoI420orYV12 (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height, CID_I420);
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVAtoYV12
- //
- // This function alpha-blends two I420 buffers into a third
- // YV12 buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- /////////////////////////////////////////////////////////////
- int I420andYUVAtoYV12 (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height)
- {
-
- return I420andYUVAtoI420orYV12 (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height, CID_YV12);
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andYUVA
- //
- // This function alpha-blends two I420 buffers into a third
- // YV12 buffer using the alpha info tacked to the
- // end of the second I420 buffer
- //
- /////////////////////////////////////////////////////////////
- int HXEXPORT ENTRYPOINT(I420andYUVA) (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height, int color_format)
- {
- #ifdef _USE_MMX_BLENDERS
- if( !z_bCheckedForMMX )
- {
- z_bMMXAvailable = (checkMmxAvailablity()&CPU_HAS_MMX)?1:0;
- z_bCheckedForMMX = TRUE;
- }
-
- if( z_bMMXAvailable )
- {
- switch (color_format)
- {
- case CID_I420:
- return I420andYUVAtoI420_MMX (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- case CID_YV12:
- return I420andYUVAtoYV12_MMX (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- case CID_YUY2:
- return I420andYUVAtoYUY2_MMX (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- case CID_UYVY:
- return I420andYUVAtoUYVY_MMX (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- default:
- return -1;
- }
- }
- #endif
- switch (color_format)
- {
- case CID_I420:
- case CID_YV12:
- return I420andYUVAtoI420orYV12 (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height, color_format);
- case CID_YUY2:
- return I420andYUVAtoYUY2 (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- case CID_UYVY:
- return I420andYUVAtoUYVY (
- src1_ptr, src1_pels, src1_lines, src1_pitch, src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch, src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch, dest_startx, dest_starty,
- width, height);
- default:
- return -1;
- }
-
- }
- /////////////////////////////////////////////////////////////
- //
- // I420andI420toI420
- //
- // This function alpha-blends two I420 buffers into a third
- // I420 buffer using the constant alpha given in the params.
- //
- /////////////////////////////////////////////////////////////
- int HXEXPORT ENTRYPOINT(I420andI420toI420) (
- unsigned char *src1_ptr, int src1_pels, int src1_lines, int src1_pitch,
- int src1_startx, int src1_starty,
- unsigned char *src2_ptr, int src2_pels, int src2_lines, int src2_pitch,
- int src2_startx, int src2_starty,
- unsigned char *dest_ptr, int dest_pels, int dest_lines, int dest_pitch,
- int dest_startx, int dest_starty,
- int width, int height, int alpha )
- {
- int ALPHA_tab[511];
-
- int i, j, c;
- unsigned char *s1, *s2, *d;
- int s1_lineskip, s2_lineskip, d_lineskip;
- #ifdef _USE_MMX_BLENDERS
- if( !z_bCheckedForMMX )
- {
- z_bMMXAvailable = (checkMmxAvailablity()&CPU_HAS_MMX)?1:0;
- z_bCheckedForMMX = TRUE;
- }
- if( z_bMMXAvailable )
- {
- return I420andI420toI420_MMX_sub (
- src1_ptr, src1_pels, src1_lines, src1_pitch,
- src1_startx, src1_starty,
- src2_ptr, src2_pels, src2_lines, src2_pitch,
- src2_startx, src2_starty,
- dest_ptr, dest_pels, dest_lines, dest_pitch,
- dest_startx, dest_starty,
- width, height, alpha );
- }
- #endif
- for (i = 0; i < 511; i++)
- {
- ALPHA_tab[i] = (i - 255) * alpha;
- }
-
- for (c = 0; c < 3; c++)
- {
- switch (c)
- {
- case 0:
- // Y
- s1 = src1_ptr + src1_starty * src1_pitch + src1_startx;
- s2 = src2_ptr + src2_starty * src2_pitch + src2_startx;
- d = dest_ptr + dest_starty * dest_pitch + dest_startx;
- s1_lineskip = src1_pitch - width;
- s2_lineskip = src2_pitch - width;
- d_lineskip = dest_pitch - width;
- break;
- case 1:
- // U
- s1 = src1_ptr + src1_pitch * src1_lines;
- s1 += (src1_starty * src1_pitch / 4) + src1_startx / 2;
- s2 = src2_ptr + src2_pitch * src2_lines;
- s2 += (src2_starty * src2_pitch / 4) + src2_startx / 2;
- d = dest_ptr + dest_pitch * dest_lines;
- d += (dest_starty * dest_pitch / 4) + dest_startx / 2;
- s1_lineskip = (src1_pitch - width) / 2;
- s2_lineskip = (src2_pitch - width) / 2;
- d_lineskip = (dest_pitch - width) / 2;
- width >>= 1;
- height >>= 1;
- break;
- case 2:
- // V
- s1 = src1_ptr + 5 * src1_pitch * src1_lines / 4;
- s1 += (src1_starty * src1_pitch / 4) + src1_startx / 2;
- s2 = src2_ptr + 5 * src2_pitch * src2_lines / 4;
- s2 += (src2_starty * src2_pitch / 4) + src2_startx / 2;
- d = dest_ptr + 5 * dest_pitch * dest_lines / 4;
- d += (dest_starty * dest_pitch / 4) + dest_startx / 2;
- break;
- }
- for (i = 0; i < height; i++)
- {
- for (j = 0; j < (width-3); j += 4)
- {
- int x1, x2;
- x1 = *(s1 + 0);
- x2 = *(s2 + 0);
- x1 -= x2;
- x1 = *(ALPHA_tab + x1 + 255);
- x1 >>= 8;
- x1 += x2;
- *(d + 0) = (unsigned char)x1;
- x1 = *(s1 + 1);
- x2 = *(s2 + 1);
- x1 -= x2;
- x1 = *(ALPHA_tab + x1 + 255);
- x1 >>= 8;
- x1 += x2;
- *(d + 1) = (unsigned char)x1;
- x1 = *(s1 + 2);
- x2 = *(s2 + 2);
- x1 -= x2;
- x1 = *(ALPHA_tab + x1 + 255);
- x1 >>= 8;
- x1 += x2;
- *(d + 2) = (unsigned char)x1;
- x1 = *(s1 + 3);
- x2 = *(s2 + 3);
- x1 -= x2;
- x1 = *(ALPHA_tab + x1 + 255);
- x1 >>= 8;
- x1 += x2;
- *(d + 3) = (unsigned char)x1;
- s1 += 4;
- s2 += 4;
- d += 4;
- }
- while (j < width)
- {
- int x1, x2;
- x1 = *s1;
- x2 = *s2;
- x1 -= x2;
- x1 = *(ALPHA_tab + x1 + 255);
- x1 >>= 8;
- x1 += x2;
- *d++ = (unsigned char)x1;
- s1++;
- s2++;
- j++;
- }
- s1 += s1_lineskip;
- s2 += s2_lineskip;
- d += d_lineskip;
- }
- }
- return 0;
- }
- #if 0
- void main (void)
- {
- unsigned char *s1, *s2, *dst;
- int pels = 64;
- int lines = 32;
- int pitch = 64;
- s1 = malloc (lines*pitch*3/2);
- s2 = malloc (lines*pitch*5/2);
- dst = malloc (lines*pitch*3/2);
- memset (s1, 64, lines*pitch*3/2);
- memset (s2, 192, lines*pitch*3/2);
- memset (s2 + lines*pitch*3/2, 64, lines*pitch);
- I420andYUVAtoI420orYV12 (
- s1, pels, lines, pitch, pels, lines,
- s2, pels, lines, pitch, pels, lines,
- dst, pels, lines, pitch, pels, lines,
- pels, lines, CID_I420);
- free (s1);
- free (s2);
- free (dst);
- }
- #endif