1 files changed, 112 insertions, 0 deletions
diff --git a/include/xine/alphablend.h b/include/xine/alphablend.h
new file mode 100644
index 000000000..f20d2e33e
--- /dev/null
+++ b/include/xine/alphablend.h
@@ -0,0 +1,112 @@
+/*
+ *
+ * Copyright (C) 2000  Thomas Mirlacher
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA.
+ *
+ * The author may be reached as <dent@linuxvideo.org>
+ *
+ *------------------------------------------------------------
+ *
+ */
+
+#ifndef __ALPHABLEND_H__
+#define __ALPHABLEND_H__
+
+#include "video_out.h"
+
+typedef struct {
+  void *buffer;
+  int buffer_size;
+
+  int disable_exact_blending;
+
+  int offset_x, offset_y;
+} alphablend_t;
+
+void _x_alphablend_init(alphablend_t *extra_data, xine_t *xine) XINE_PROTECTED;
+void _x_alphablend_free(alphablend_t *extra_data) XINE_PROTECTED;
+
+typedef struct {         /* CLUT == Color LookUp Table */
+  uint8_t cb;
+  uint8_t cr;
+  uint8_t y;
+  uint8_t foo;
+} XINE_PACKED clut_t;
+
+#define XX44_PALETTE_SIZE 32
+
+typedef struct {
+  unsigned size;
+  unsigned max_used;
+  uint32_t cluts[XX44_PALETTE_SIZE];
+  /* cache palette entries for both colors and hili_colors */
+  int lookup_cache[OVL_PALETTE_SIZE*2];
+} xx44_palette_t;
+
+
+void _x_blend_rgb16 (uint8_t * img, vo_overlay_t * img_overl,
+		  int img_width, int img_height,
+		  int dst_width, int dst_height,
+                  alphablend_t *extra_data) XINE_PROTECTED;
+
+void _x_blend_rgb24 (uint8_t * img, vo_overlay_t * img_overl,
+		  int img_width, int img_height,
+		  int dst_width, int dst_height,
+                  alphablend_t *extra_data) XINE_PROTECTED;
+
+void _x_blend_rgb32 (uint8_t * img, vo_overlay_t * img_overl,
+		  int img_width, int img_height,
+		  int dst_width, int dst_height,
+                  alphablend_t *extra_data) XINE_PROTECTED;
+
+void _x_blend_yuv (uint8_t *dst_base[3], vo_overlay_t * img_overl,
+                int dst_width, int dst_height, int dst_pitches[3],
+                alphablend_t *extra_data) XINE_PROTECTED;
+
+void _x_blend_yuy2 (uint8_t * dst_img, vo_overlay_t * img_overl,
+                 int dst_width, int dst_height, int dst_pitch,
+                 alphablend_t *extra_data) XINE_PROTECTED;
+
+/*
+ * This function isn't too smart about blending. We want to avoid creating new
+ * colors in the palette as a result from two non-zero colors needed to be
+ * blended. Instead we choose the color with the highest alpha value to be
+ * visible. Some parts of the code taken from the "VeXP" project.
+ */
+
+void _x_blend_xx44 (uint8_t *dst_img, vo_overlay_t *img_overl,
+		int dst_width, int dst_height, int dst_pitch, 
+                alphablend_t *extra_data,
+		xx44_palette_t *palette,int ia44) XINE_PROTECTED;
+
+/*
+ * Functions to handle the xine-specific palette.
+ */
+
+void _x_clear_xx44_palette(xx44_palette_t *p) XINE_PROTECTED;
+void _x_init_xx44_palette(xx44_palette_t *p, unsigned num_entries) XINE_PROTECTED;
+void _x_dispose_xx44_palette(xx44_palette_t *p) XINE_PROTECTED;
+
+/*
+ * Convert the xine-specific palette to something useful.
+ */
+
+void _x_xx44_to_xvmc_palette(const xx44_palette_t *p,unsigned char *xvmc_palette,
+			  unsigned first_xx44_entry, unsigned num_xx44_entries,
+			  unsigned num_xvmc_components, char *xvmc_components) XINE_PROTECTED;
+
+
+#endif