| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@temple-baptist.com> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 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 |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library 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. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <string.h> |
| #include <gst/gst.h> |
| |
| #include "flx_color.h" |
| |
| FlxColorSpaceConverter * |
| flx_colorspace_converter_new (gint width, gint height) |
| { |
| FlxColorSpaceConverter *new = g_malloc (sizeof (FlxColorSpaceConverter)); |
| |
| new->width = width; |
| new->height = height; |
| |
| memset (new->palvec, 0, sizeof (new->palvec)); |
| return new; |
| } |
| |
| void |
| flx_colorspace_converter_destroy (FlxColorSpaceConverter * flxpal) |
| { |
| g_return_if_fail (flxpal != NULL); |
| |
| g_free (flxpal); |
| } |
| |
| void |
| flx_colorspace_convert (FlxColorSpaceConverter * flxpal, guchar * src, |
| guchar * dest) |
| { |
| guint size, col; |
| |
| g_return_if_fail (flxpal != NULL); |
| g_return_if_fail (src != dest); |
| |
| |
| size = flxpal->width * flxpal->height; |
| |
| while (size--) { |
| col = (*src++ * 3); |
| |
| #if G_BYTE_ORDER == G_BIG_ENDIAN |
| *dest++ = 0; |
| *dest++ = flxpal->palvec[col]; |
| *dest++ = flxpal->palvec[col + 1]; |
| *dest++ = flxpal->palvec[col + 2]; |
| #else |
| *dest++ = flxpal->palvec[col + 2]; |
| *dest++ = flxpal->palvec[col + 1]; |
| *dest++ = flxpal->palvec[col]; |
| *dest++ = 0; |
| #endif |
| } |
| |
| } |
| |
| |
| void |
| flx_set_palette_vector (FlxColorSpaceConverter * flxpal, guint start, guint num, |
| guchar * newpal, gint scale) |
| { |
| guint grab; |
| |
| g_return_if_fail (flxpal != NULL); |
| g_return_if_fail (start < 0x100); |
| |
| grab = ((start + num) > 0x100 ? 0x100 - start : num); |
| |
| if (scale) { |
| gint i = 0; |
| |
| start *= 3; |
| while (grab) { |
| flxpal->palvec[start++] = newpal[i++] << scale; |
| flxpal->palvec[start++] = newpal[i++] << scale; |
| flxpal->palvec[start++] = newpal[i++] << scale; |
| grab--; |
| } |
| } else { |
| memcpy (&flxpal->palvec[start * 3], newpal, grab * 3); |
| } |
| } |
| |
| void |
| flx_set_color (FlxColorSpaceConverter * flxpal, guint colr, guint red, |
| guint green, guint blue, gint scale) |
| { |
| |
| g_return_if_fail (flxpal != NULL); |
| g_return_if_fail (colr < 0x100); |
| |
| flxpal->palvec[(colr * 3)] = red << scale; |
| flxpal->palvec[(colr * 3) + 1] = green << scale; |
| flxpal->palvec[(colr * 3) + 2] = blue << scale; |
| } |