--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/symbian-qemu-0.9.1-12/libsdl-trunk/src/video/SDL_yuv_sw.c Fri Jul 31 15:01:17 2009 +0100
@@ -0,0 +1,1298 @@
+/*
+ SDL - Simple DirectMedia Layer
+ Copyright (C) 1997-2006 Sam Lantinga
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+ Sam Lantinga
+ slouken@libsdl.org
+*/
+#include "SDL_config.h"
+
+/* This is the software implementation of the YUV video overlay support */
+
+/* This code was derived from code carrying the following copyright notices:
+
+ * Copyright (c) 1995 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+ * Copyright (c) 1995 Erik Corry
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice and the following
+ * two paragraphs appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL ERIK CORRY BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
+ * SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
+ * THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF ERIK CORRY HAS BEEN ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * ERIK CORRY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
+ * BASIS, AND ERIK CORRY HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT,
+ * UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+
+ * Portions of this software Copyright (c) 1995 Brown University.
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement
+ * is hereby granted, provided that the above copyright notice and the
+ * following two paragraphs appear in all copies of this software.
+ *
+ * IN NO EVENT SHALL BROWN UNIVERSITY BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF BROWN
+ * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * BROWN UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
+ * BASIS, AND BROWN UNIVERSITY HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
+ * SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ */
+
+#include "SDL_video.h"
+#include "SDL_cpuinfo.h"
+#include "SDL_stretch_c.h"
+#include "SDL_yuvfuncs.h"
+#include "SDL_yuv_sw_c.h"
+
+/* The functions used to manipulate software video overlays */
+static struct private_yuvhwfuncs sw_yuvfuncs = {
+ SDL_LockYUV_SW,
+ SDL_UnlockYUV_SW,
+ SDL_DisplayYUV_SW,
+ SDL_FreeYUV_SW
+};
+
+/* RGB conversion lookup tables */
+struct private_yuvhwdata {
+ SDL_Surface *stretch;
+ SDL_Surface *display;
+ Uint8 *pixels;
+ int *colortab;
+ Uint32 *rgb_2_pix;
+ void (*Display1X)(int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod );
+ void (*Display2X)(int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod );
+
+ /* These are just so we don't have to allocate them separately */
+ Uint16 pitches[3];
+ Uint8 *planes[3];
+};
+
+
+/* The colorspace conversion functions */
+
+#if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
+extern void Color565DitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod );
+extern void ColorRGBDitherYV12MMX1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod );
+#endif
+
+static void Color16DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned short* row1;
+ unsigned short* row2;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row1 = (unsigned short*) out;
+ row2 = row1 + cols + mod;
+ lum2 = lum + cols;
+
+ mod += cols + mod;
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum++;
+ *row1++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum2++;
+ *row2++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+static void Color24DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int value;
+ unsigned char* row1;
+ unsigned char* row2;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row1 = out;
+ row2 = row1 + cols*3 + mod*3;
+ lum2 = lum + cols;
+
+ mod += cols + mod;
+ mod *= 3;
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row1++ = (value ) & 0xFF;
+ *row1++ = (value >> 8) & 0xFF;
+ *row1++ = (value >> 16) & 0xFF;
+
+ L = *lum++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row1++ = (value ) & 0xFF;
+ *row1++ = (value >> 8) & 0xFF;
+ *row1++ = (value >> 16) & 0xFF;
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row2++ = (value ) & 0xFF;
+ *row2++ = (value >> 8) & 0xFF;
+ *row2++ = (value >> 16) & 0xFF;
+
+ L = *lum2++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row2++ = (value ) & 0xFF;
+ *row2++ = (value >> 8) & 0xFF;
+ *row2++ = (value >> 16) & 0xFF;
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+static void Color32DitherYV12Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row1;
+ unsigned int* row2;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row1 = (unsigned int*) out;
+ row2 = row1 + cols + mod;
+ lum2 = lum + cols;
+
+ mod += cols + mod;
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ *row1++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum++;
+ *row1++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ *row2++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum2++;
+ *row2++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+/*
+ * In this function I make use of a nasty trick. The tables have the lower
+ * 16 bits replicated in the upper 16. This means I can write ints and get
+ * the horisontal doubling for free (almost).
+ */
+static void Color16DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row1 = (unsigned int*) out;
+ const int next_row = cols+(mod/2);
+ unsigned int* row2 = row1 + 2*next_row;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ lum2 = lum + cols;
+
+ mod = (next_row * 3) + (mod/2);
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1++;
+
+ L = *lum++;
+ row1[0] = row1[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1++;
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2++;
+
+ L = *lum2++;
+ row2[0] = row2[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2++;
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+static void Color24DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int value;
+ unsigned char* row1 = out;
+ const int next_row = (cols*2 + mod) * 3;
+ unsigned char* row2 = row1 + 2*next_row;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ lum2 = lum + cols;
+
+ mod = next_row*3 + mod*3;
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
+ (value ) & 0xFF;
+ row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row1 += 2*3;
+
+ L = *lum++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1[0+0] = row1[3+0] = row1[next_row+0] = row1[next_row+3+0] =
+ (value ) & 0xFF;
+ row1[0+1] = row1[3+1] = row1[next_row+1] = row1[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row1[0+2] = row1[3+2] = row1[next_row+2] = row1[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row1 += 2*3;
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
+ (value ) & 0xFF;
+ row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row2 += 2*3;
+
+ L = *lum2++;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2[0+0] = row2[3+0] = row2[next_row+0] = row2[next_row+3+0] =
+ (value ) & 0xFF;
+ row2[0+1] = row2[3+1] = row2[next_row+1] = row2[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row2[0+2] = row2[3+2] = row2[next_row+2] = row2[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row2 += 2*3;
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+static void Color32DitherYV12Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row1 = (unsigned int*) out;
+ const int next_row = cols*2+mod;
+ unsigned int* row2 = row1 + 2*next_row;
+ unsigned char* lum2;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ lum2 = lum + cols;
+
+ mod = (next_row * 3) + mod;
+
+ y = rows / 2;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ ++cr; ++cb;
+
+ L = *lum++;
+ row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1 += 2;
+
+ L = *lum++;
+ row1[0] = row1[1] = row1[next_row] = row1[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row1 += 2;
+
+
+ /* Now, do second row. */
+
+ L = *lum2++;
+ row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2 += 2;
+
+ L = *lum2++;
+ row2[0] = row2[1] = row2[next_row] = row2[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row2 += 2;
+ }
+
+ /*
+ * These values are at the start of the next line, (due
+ * to the ++'s above),but they need to be at the start
+ * of the line after that.
+ */
+ lum += cols;
+ lum2 += cols;
+ row1 += mod;
+ row2 += mod;
+ }
+}
+
+static void Color16DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned short* row;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row = (unsigned short*) out;
+
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum; lum += 2;
+ *row++ = (unsigned short)(rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ }
+
+ row += mod;
+ }
+}
+
+static void Color24DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int value;
+ unsigned char* row;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row = (unsigned char*) out;
+ mod *= 3;
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row++ = (value ) & 0xFF;
+ *row++ = (value >> 8) & 0xFF;
+ *row++ = (value >> 16) & 0xFF;
+
+ L = *lum; lum += 2;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ *row++ = (value ) & 0xFF;
+ *row++ = (value >> 8) & 0xFF;
+ *row++ = (value >> 16) & 0xFF;
+
+ }
+ row += mod;
+ }
+}
+
+static void Color32DitherYUY2Mod1X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ row = (unsigned int*) out;
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ *row++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+ L = *lum; lum += 2;
+ *row++ = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+
+
+ }
+ row += mod;
+ }
+}
+
+/*
+ * In this function I make use of a nasty trick. The tables have the lower
+ * 16 bits replicated in the upper 16. This means I can write ints and get
+ * the horisontal doubling for free (almost).
+ */
+static void Color16DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row = (unsigned int*) out;
+ const int next_row = cols+(mod/2);
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row++;
+
+ L = *lum; lum += 2;
+ row[0] = row[next_row] = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row++;
+
+ }
+ row += next_row;
+ }
+}
+
+static void Color24DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int value;
+ unsigned char* row = out;
+ const int next_row = (cols*2 + mod) * 3;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
+ (value ) & 0xFF;
+ row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row += 2*3;
+
+ L = *lum; lum += 2;
+ value = (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row[0+0] = row[3+0] = row[next_row+0] = row[next_row+3+0] =
+ (value ) & 0xFF;
+ row[0+1] = row[3+1] = row[next_row+1] = row[next_row+3+1] =
+ (value >> 8) & 0xFF;
+ row[0+2] = row[3+2] = row[next_row+2] = row[next_row+3+2] =
+ (value >> 16) & 0xFF;
+ row += 2*3;
+
+ }
+ row += next_row;
+ }
+}
+
+static void Color32DitherYUY2Mod2X( int *colortab, Uint32 *rgb_2_pix,
+ unsigned char *lum, unsigned char *cr,
+ unsigned char *cb, unsigned char *out,
+ int rows, int cols, int mod )
+{
+ unsigned int* row = (unsigned int*) out;
+ const int next_row = cols*2+mod;
+ int x, y;
+ int cr_r;
+ int crb_g;
+ int cb_b;
+ int cols_2 = cols / 2;
+ mod+=mod;
+ y = rows;
+ while( y-- )
+ {
+ x = cols_2;
+ while( x-- )
+ {
+ register int L;
+
+ cr_r = 0*768+256 + colortab[ *cr + 0*256 ];
+ crb_g = 1*768+256 + colortab[ *cr + 1*256 ]
+ + colortab[ *cb + 2*256 ];
+ cb_b = 2*768+256 + colortab[ *cb + 3*256 ];
+ cr += 4; cb += 4;
+
+ L = *lum; lum += 2;
+ row[0] = row[1] = row[next_row] = row[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row += 2;
+
+ L = *lum; lum += 2;
+ row[0] = row[1] = row[next_row] = row[next_row+1] =
+ (rgb_2_pix[ L + cr_r ] |
+ rgb_2_pix[ L + crb_g ] |
+ rgb_2_pix[ L + cb_b ]);
+ row += 2;
+
+
+ }
+
+ row += next_row;
+ }
+}
+
+/*
+ * How many 1 bits are there in the Uint32.
+ * Low performance, do not call often.
+ */
+static int number_of_bits_set( Uint32 a )
+{
+ if(!a) return 0;
+ if(a & 1) return 1 + number_of_bits_set(a >> 1);
+ return(number_of_bits_set(a >> 1));
+}
+
+/*
+ * How many 0 bits are there at least significant end of Uint32.
+ * Low performance, do not call often.
+ */
+static int free_bits_at_bottom( Uint32 a )
+{
+ /* assume char is 8 bits */
+ if(!a) return sizeof(Uint32) * 8;
+ if(((Sint32)a) & 1l) return 0;
+ return 1 + free_bits_at_bottom ( a >> 1);
+}
+
+
+SDL_Overlay *SDL_CreateYUV_SW(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
+{
+ SDL_Overlay *overlay;
+ struct private_yuvhwdata *swdata;
+ int *Cr_r_tab;
+ int *Cr_g_tab;
+ int *Cb_g_tab;
+ int *Cb_b_tab;
+ Uint32 *r_2_pix_alloc;
+ Uint32 *g_2_pix_alloc;
+ Uint32 *b_2_pix_alloc;
+ int i;
+ int CR, CB;
+ Uint32 Rmask, Gmask, Bmask;
+
+ /* Only RGB packed pixel conversion supported */
+ if ( (display->format->BytesPerPixel != 2) &&
+ (display->format->BytesPerPixel != 3) &&
+ (display->format->BytesPerPixel != 4) ) {
+ SDL_SetError("Can't use YUV data on non 16/24/32 bit surfaces");
+ return(NULL);
+ }
+
+ /* Verify that we support the format */
+ switch (format) {
+ case SDL_YV12_OVERLAY:
+ case SDL_IYUV_OVERLAY:
+ case SDL_YUY2_OVERLAY:
+ case SDL_UYVY_OVERLAY:
+ case SDL_YVYU_OVERLAY:
+ break;
+ default:
+ SDL_SetError("Unsupported YUV format");
+ return(NULL);
+ }
+
+ /* Create the overlay structure */
+ overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
+ if ( overlay == NULL ) {
+ SDL_OutOfMemory();
+ return(NULL);
+ }
+ SDL_memset(overlay, 0, (sizeof *overlay));
+
+ /* Fill in the basic members */
+ overlay->format = format;
+ overlay->w = width;
+ overlay->h = height;
+
+ /* Set up the YUV surface function structure */
+ overlay->hwfuncs = &sw_yuvfuncs;
+
+ /* Create the pixel data and lookup tables */
+ swdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *swdata);
+ overlay->hwdata = swdata;
+ if ( swdata == NULL ) {
+ SDL_OutOfMemory();
+ SDL_FreeYUVOverlay(overlay);
+ return(NULL);
+ }
+ swdata->stretch = NULL;
+ swdata->display = display;
+ swdata->pixels = (Uint8 *) SDL_malloc(width*height*2);
+ swdata->colortab = (int *)SDL_malloc(4*256*sizeof(int));
+ Cr_r_tab = &swdata->colortab[0*256];
+ Cr_g_tab = &swdata->colortab[1*256];
+ Cb_g_tab = &swdata->colortab[2*256];
+ Cb_b_tab = &swdata->colortab[3*256];
+ swdata->rgb_2_pix = (Uint32 *)SDL_malloc(3*768*sizeof(Uint32));
+ r_2_pix_alloc = &swdata->rgb_2_pix[0*768];
+ g_2_pix_alloc = &swdata->rgb_2_pix[1*768];
+ b_2_pix_alloc = &swdata->rgb_2_pix[2*768];
+ if ( ! swdata->pixels || ! swdata->colortab || ! swdata->rgb_2_pix ) {
+ SDL_OutOfMemory();
+ SDL_FreeYUVOverlay(overlay);
+ return(NULL);
+ }
+
+ /* Generate the tables for the display surface */
+ for (i=0; i<256; i++) {
+ /* Gamma correction (luminescence table) and chroma correction
+ would be done here. See the Berkeley mpeg_play sources.
+ */
+ CB = CR = (i-128);
+ Cr_r_tab[i] = (int) ( (0.419/0.299) * CR);
+ Cr_g_tab[i] = (int) (-(0.299/0.419) * CR);
+ Cb_g_tab[i] = (int) (-(0.114/0.331) * CB);
+ Cb_b_tab[i] = (int) ( (0.587/0.331) * CB);
+ }
+
+ /*
+ * Set up entries 0-255 in rgb-to-pixel value tables.
+ */
+ Rmask = display->format->Rmask;
+ Gmask = display->format->Gmask;
+ Bmask = display->format->Bmask;
+ for ( i=0; i<256; ++i ) {
+ r_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Rmask));
+ r_2_pix_alloc[i+256] <<= free_bits_at_bottom(Rmask);
+ g_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Gmask));
+ g_2_pix_alloc[i+256] <<= free_bits_at_bottom(Gmask);
+ b_2_pix_alloc[i+256] = i >> (8 - number_of_bits_set(Bmask));
+ b_2_pix_alloc[i+256] <<= free_bits_at_bottom(Bmask);
+ }
+
+ /*
+ * If we have 16-bit output depth, then we double the value
+ * in the top word. This means that we can write out both
+ * pixels in the pixel doubling mode with one op. It is
+ * harmless in the normal case as storing a 32-bit value
+ * through a short pointer will lose the top bits anyway.
+ */
+ if( display->format->BytesPerPixel == 2 ) {
+ for ( i=0; i<256; ++i ) {
+ r_2_pix_alloc[i+256] |= (r_2_pix_alloc[i+256]) << 16;
+ g_2_pix_alloc[i+256] |= (g_2_pix_alloc[i+256]) << 16;
+ b_2_pix_alloc[i+256] |= (b_2_pix_alloc[i+256]) << 16;
+ }
+ }
+
+ /*
+ * Spread out the values we have to the rest of the array so that
+ * we do not need to check for overflow.
+ */
+ for ( i=0; i<256; ++i ) {
+ r_2_pix_alloc[i] = r_2_pix_alloc[256];
+ r_2_pix_alloc[i+512] = r_2_pix_alloc[511];
+ g_2_pix_alloc[i] = g_2_pix_alloc[256];
+ g_2_pix_alloc[i+512] = g_2_pix_alloc[511];
+ b_2_pix_alloc[i] = b_2_pix_alloc[256];
+ b_2_pix_alloc[i+512] = b_2_pix_alloc[511];
+ }
+
+ /* You have chosen wisely... */
+ switch (format) {
+ case SDL_YV12_OVERLAY:
+ case SDL_IYUV_OVERLAY:
+ if ( display->format->BytesPerPixel == 2 ) {
+#if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
+ /* inline assembly functions */
+ if ( SDL_HasMMX() && (Rmask == 0xF800) &&
+ (Gmask == 0x07E0) &&
+ (Bmask == 0x001F) &&
+ (width & 15) == 0) {
+/*printf("Using MMX 16-bit 565 dither\n");*/
+ swdata->Display1X = Color565DitherYV12MMX1X;
+ } else {
+/*printf("Using C 16-bit dither\n");*/
+ swdata->Display1X = Color16DitherYV12Mod1X;
+ }
+#else
+ swdata->Display1X = Color16DitherYV12Mod1X;
+#endif
+ swdata->Display2X = Color16DitherYV12Mod2X;
+ }
+ if ( display->format->BytesPerPixel == 3 ) {
+ swdata->Display1X = Color24DitherYV12Mod1X;
+ swdata->Display2X = Color24DitherYV12Mod2X;
+ }
+ if ( display->format->BytesPerPixel == 4 ) {
+#if (__GNUC__ > 2) && defined(__i386__) && __OPTIMIZE__ && SDL_ASSEMBLY_ROUTINES
+ /* inline assembly functions */
+ if ( SDL_HasMMX() && (Rmask == 0x00FF0000) &&
+ (Gmask == 0x0000FF00) &&
+ (Bmask == 0x000000FF) &&
+ (width & 15) == 0) {
+/*printf("Using MMX 32-bit dither\n");*/
+ swdata->Display1X = ColorRGBDitherYV12MMX1X;
+ } else {
+/*printf("Using C 32-bit dither\n");*/
+ swdata->Display1X = Color32DitherYV12Mod1X;
+ }
+#else
+ swdata->Display1X = Color32DitherYV12Mod1X;
+#endif
+ swdata->Display2X = Color32DitherYV12Mod2X;
+ }
+ break;
+ case SDL_YUY2_OVERLAY:
+ case SDL_UYVY_OVERLAY:
+ case SDL_YVYU_OVERLAY:
+ if ( display->format->BytesPerPixel == 2 ) {
+ swdata->Display1X = Color16DitherYUY2Mod1X;
+ swdata->Display2X = Color16DitherYUY2Mod2X;
+ }
+ if ( display->format->BytesPerPixel == 3 ) {
+ swdata->Display1X = Color24DitherYUY2Mod1X;
+ swdata->Display2X = Color24DitherYUY2Mod2X;
+ }
+ if ( display->format->BytesPerPixel == 4 ) {
+ swdata->Display1X = Color32DitherYUY2Mod1X;
+ swdata->Display2X = Color32DitherYUY2Mod2X;
+ }
+ break;
+ default:
+ /* We should never get here (caught above) */
+ break;
+ }
+
+ /* Find the pitch and offset values for the overlay */
+ overlay->pitches = swdata->pitches;
+ overlay->pixels = swdata->planes;
+ switch (format) {
+ case SDL_YV12_OVERLAY:
+ case SDL_IYUV_OVERLAY:
+ overlay->pitches[0] = overlay->w;
+ overlay->pitches[1] = overlay->pitches[0] / 2;
+ overlay->pitches[2] = overlay->pitches[0] / 2;
+ overlay->pixels[0] = swdata->pixels;
+ overlay->pixels[1] = overlay->pixels[0] +
+ overlay->pitches[0] * overlay->h;
+ overlay->pixels[2] = overlay->pixels[1] +
+ overlay->pitches[1] * overlay->h / 2;
+ overlay->planes = 3;
+ break;
+ case SDL_YUY2_OVERLAY:
+ case SDL_UYVY_OVERLAY:
+ case SDL_YVYU_OVERLAY:
+ overlay->pitches[0] = overlay->w*2;
+ overlay->pixels[0] = swdata->pixels;
+ overlay->planes = 1;
+ break;
+ default:
+ /* We should never get here (caught above) */
+ break;
+ }
+
+ /* We're all done.. */
+ return(overlay);
+}
+
+int SDL_LockYUV_SW(_THIS, SDL_Overlay *overlay)
+{
+ return(0);
+}
+
+void SDL_UnlockYUV_SW(_THIS, SDL_Overlay *overlay)
+{
+ return;
+}
+
+int SDL_DisplayYUV_SW(_THIS, SDL_Overlay *overlay, SDL_Rect *src, SDL_Rect *dst)
+{
+ struct private_yuvhwdata *swdata;
+ int stretch;
+ int scale_2x;
+ SDL_Surface *display;
+ Uint8 *lum, *Cr, *Cb;
+ Uint8 *dstp;
+ int mod;
+
+ swdata = overlay->hwdata;
+ stretch = 0;
+ scale_2x = 0;
+ if ( src->x || src->y || src->w < overlay->w || src->h < overlay->h ) {
+ /* The source rectangle has been clipped.
+ Using a scratch surface is easier than adding clipped
+ source support to all the blitters, plus that would
+ slow them down in the general unclipped case.
+ */
+ stretch = 1;
+ } else if ( (src->w != dst->w) || (src->h != dst->h) ) {
+ if ( (dst->w == 2*src->w) &&
+ (dst->h == 2*src->h) ) {
+ scale_2x = 1;
+ } else {
+ stretch = 1;
+ }
+ }
+ if ( stretch ) {
+ if ( ! swdata->stretch ) {
+ display = swdata->display;
+ swdata->stretch = SDL_CreateRGBSurface(
+ SDL_SWSURFACE,
+ overlay->w, overlay->h,
+ display->format->BitsPerPixel,
+ display->format->Rmask,
+ display->format->Gmask,
+ display->format->Bmask, 0);
+ if ( ! swdata->stretch ) {
+ return(-1);
+ }
+ }
+ display = swdata->stretch;
+ } else {
+ display = swdata->display;
+ }
+ switch (overlay->format) {
+ case SDL_YV12_OVERLAY:
+ lum = overlay->pixels[0];
+ Cr = overlay->pixels[1];
+ Cb = overlay->pixels[2];
+ break;
+ case SDL_IYUV_OVERLAY:
+ lum = overlay->pixels[0];
+ Cr = overlay->pixels[2];
+ Cb = overlay->pixels[1];
+ break;
+ case SDL_YUY2_OVERLAY:
+ lum = overlay->pixels[0];
+ Cr = lum + 3;
+ Cb = lum + 1;
+ break;
+ case SDL_UYVY_OVERLAY:
+ lum = overlay->pixels[0]+1;
+ Cr = lum + 1;
+ Cb = lum - 1;
+ break;
+ case SDL_YVYU_OVERLAY:
+ lum = overlay->pixels[0];
+ Cr = lum + 1;
+ Cb = lum + 3;
+ break;
+ default:
+ SDL_SetError("Unsupported YUV format in blit");
+ return(-1);
+ }
+ if ( SDL_MUSTLOCK(display) ) {
+ if ( SDL_LockSurface(display) < 0 ) {
+ return(-1);
+ }
+ }
+ if ( stretch ) {
+ dstp = (Uint8 *)swdata->stretch->pixels;
+ } else {
+ dstp = (Uint8 *)display->pixels
+ + dst->x * display->format->BytesPerPixel
+ + dst->y * display->pitch;
+ }
+ mod = (display->pitch / display->format->BytesPerPixel);
+
+ if ( scale_2x ) {
+ mod -= (overlay->w * 2);
+ swdata->Display2X(swdata->colortab, swdata->rgb_2_pix,
+ lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
+ } else {
+ mod -= overlay->w;
+ swdata->Display1X(swdata->colortab, swdata->rgb_2_pix,
+ lum, Cr, Cb, dstp, overlay->h, overlay->w, mod);
+ }
+ if ( SDL_MUSTLOCK(display) ) {
+ SDL_UnlockSurface(display);
+ }
+ if ( stretch ) {
+ display = swdata->display;
+ SDL_SoftStretch(swdata->stretch, src, display, dst);
+ }
+ SDL_UpdateRects(display, 1, dst);
+
+ return(0);
+}
+
+void SDL_FreeYUV_SW(_THIS, SDL_Overlay *overlay)
+{
+ struct private_yuvhwdata *swdata;
+
+ swdata = overlay->hwdata;
+ if ( swdata ) {
+ if ( swdata->stretch ) {
+ SDL_FreeSurface(swdata->stretch);
+ }
+ if ( swdata->pixels ) {
+ SDL_free(swdata->pixels);
+ }
+ if ( swdata->colortab ) {
+ SDL_free(swdata->colortab);
+ }
+ if ( swdata->rgb_2_pix ) {
+ SDL_free(swdata->rgb_2_pix);
+ }
+ SDL_free(swdata);
+ }
+}