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282 lines
8.7 KiB
C
282 lines
8.7 KiB
C
/* Gnome-Streamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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//#define DEBUG_ENABLED
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#include "gstcolorspace.h"
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static void gst_colorspace_rgb_to_rgb_identity(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_rgb24_to_bgr24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_rgb24_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_rgb32_to_bgr32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_rgb555_to_rgb565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_bgr565_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_bgr24_to_bgr565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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static void gst_colorspace_bgr32_to_bgr565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest);
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GstColorSpaceConvertFunction gst_colorspace_rgb2rgb_get_converter(GstColorSpaceConverter *space, GstColorSpaceType src, GstColorSpaceType dest) {
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switch(src) {
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case GST_COLORSPACE_RGB24:
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space->insize = space->width*space->height*3;
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switch(dest) {
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case GST_COLORSPACE_RGB24:
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space->outsize = space->width*space->height*3;
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return gst_colorspace_rgb_to_rgb_identity;
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case GST_COLORSPACE_BGR24:
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space->outsize = space->width*space->height*3;
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return gst_colorspace_rgb24_to_bgr24;
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case GST_COLORSPACE_RGB32:
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space->outsize = space->width*space->height*4;
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return gst_colorspace_rgb24_to_rgb32;
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default:
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break;
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}
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break;
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case GST_COLORSPACE_BGR24:
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space->insize = space->width*space->height*3;
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switch(dest) {
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case GST_COLORSPACE_RGB24:
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space->outsize = space->width*space->height*3;
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return gst_colorspace_rgb24_to_bgr24;
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case GST_COLORSPACE_BGR24:
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space->outsize = space->width*space->height*3;
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return gst_colorspace_rgb_to_rgb_identity;
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case GST_COLORSPACE_BGR565:
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space->outsize = space->width*space->height*2;
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return gst_colorspace_bgr24_to_bgr565;
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default:
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break;
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}
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break;
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case GST_COLORSPACE_RGB32:
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space->insize = space->width*space->height*4;
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switch(dest) {
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case GST_COLORSPACE_BGR32:
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space->outsize = space->width*space->height*4;
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return gst_colorspace_rgb32_to_bgr32;
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case GST_COLORSPACE_RGB32:
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space->outsize = space->width*space->height*4;
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return gst_colorspace_rgb_to_rgb_identity;
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default:
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break;
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}
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break;
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case GST_COLORSPACE_BGR32:
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space->insize = space->width*space->height*4;
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switch(dest) {
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case GST_COLORSPACE_RGB32:
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space->outsize = space->width*space->height*4;
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return gst_colorspace_rgb32_to_bgr32;
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case GST_COLORSPACE_BGR32:
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space->outsize = space->width*space->height*4;
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return gst_colorspace_rgb_to_rgb_identity;
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case GST_COLORSPACE_BGR565:
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space->outsize = space->width*space->height*2;
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return gst_colorspace_bgr32_to_bgr565;
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default:
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break;
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}
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break;
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case GST_COLORSPACE_BGR555:
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space->insize = space->width*space->height*2;
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switch(dest) {
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case GST_COLORSPACE_RGB555:
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space->outsize = space->width*space->height*2;
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return gst_colorspace_rgb32_to_bgr32;
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case GST_COLORSPACE_BGR565:
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space->outsize = space->width*space->height*2;
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return gst_colorspace_rgb555_to_rgb565;
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default:
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break;
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}
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break;
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case GST_COLORSPACE_BGR565:
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space->insize = space->width*space->height*2;
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switch(dest) {
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case GST_COLORSPACE_RGB32 :
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space->outsize = space->width*space->height*4;
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return gst_colorspace_bgr565_to_rgb32;
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default:
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break;
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};
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break;
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default:
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break;
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}
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g_print("gst_colorspace: conversion not supported %d %d\n", src, dest);
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return NULL;
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}
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static void gst_colorspace_rgb_to_rgb_identity(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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memcpy(dest, src, space->outsize);
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}
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static void gst_colorspace_rgb24_to_bgr24(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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gchar temp;
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GST_DEBUG (0,"gst_colorspace_rgb24_to_bgr24 %p %p %d %d %d\n", src, dest, space->outsize, space->width, space->height);
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size = space->outsize/3;
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if (src == dest) {
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while (size--) {
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temp = src[0];
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src[0] = src[2];
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src[2] = temp;
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src+=3;
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}
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}
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else {
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while (size--) {
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*dest++ = src[2];
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*dest++ = src[1];
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*dest++ = src[0];
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src+=3;
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}
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}
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GST_DEBUG (0,"gst_colorspace_rgb24_to_bgr24 end\n");
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}
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static void gst_colorspace_bgr24_to_bgr565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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guint16 *destptr = (guint16 *)dest;
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GST_DEBUG (0,"gst_colorspace_bgr24_to_bgr565 %p %p %d %d %d\n", src, dest, space->outsize, space->width, space->height);
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size = space->outsize/2;
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while (size--) {
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*destptr++ = ((src[2]&0xF8)<<8)|((src[1]&0xFC)<<3)|((src[0]&0xF8)>>3);
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src+=3;
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}
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GST_DEBUG (0,"gst_colorspace_bgr24_to_bgr565 end\n");
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}
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static void gst_colorspace_bgr32_to_bgr565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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guint16 *destptr = (guint16 *)dest;
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GST_DEBUG (0,"gst_colorspace_bgr32_to_bgr565 %p %p %d %d %d\n", src, dest, space->outsize, space->width, space->height);
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size = space->outsize/2;
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while (size--) {
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*destptr++ = ((src[2]&0xF8)<<8)|((src[1]&0xFC)<<3)|((src[0]&0xF8)>>3);
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src+=4;
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}
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GST_DEBUG (0,"gst_colorspace_bgr32_to_bgr565 end\n");
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}
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static void gst_colorspace_rgb24_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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guint32 *destptr = (guint32 *)dest;
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GST_DEBUG (0,"gst_colorspace_rgb24_to_rgb32 %p %p %d\n", src, dest, space->outsize);
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size = space->outsize/4;
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while (size--) {
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*destptr++ = (src[0]<<16)|(src[1]<<8)|src[2];
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src+=3;
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}
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GST_DEBUG (0,"gst_colorspace_rgb24_to_rgb32 end\n");
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}
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static void gst_colorspace_rgb32_to_bgr32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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gchar temp;
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GST_DEBUG (0,"gst_colorspace_rgb32_to_bgr32 %p %p %d\n", src, dest, space->outsize);
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size = space->outsize/4;
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if (src == dest) {
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while (size--) {
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temp = src[0];
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src[0] = src[2];
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src[2] = temp;
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src+=4;
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}
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}
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else {
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while (size--) {
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*dest++ = src[2];
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*dest++ = src[1];
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*dest++ = src[0];
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dest++;
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src+=4;
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}
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}
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GST_DEBUG (0,"gst_colorspace_rgb32_to_bgr32 end\n");
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}
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static void gst_colorspace_rgb555_to_rgb565(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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guint32 *srcptr = (guint32 *) src;
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guint32 *destptr = (guint32 *) dest;
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GST_DEBUG (0,"gst_colorspace_rgb555_to_rgb565 %p %p %d\n", src, dest, space->outsize);
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size = space->outsize/4;
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if (src == dest) {
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while (size--) {
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*srcptr += (*srcptr++)&0xFFE0FFE0;
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}
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}
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else {
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while (size--) {
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*destptr++ = *srcptr + ((*srcptr++)&0xFFE0FFE0);
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}
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}
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}
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static void gst_colorspace_bgr565_to_rgb32(GstColorSpaceConverter *space, unsigned char *src, unsigned char *dest)
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{
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gint size;
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guint16 *srcptr = (guint16 *)src;
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guint32 *destptr = (guint32 *)dest;
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size = space->outsize >> 2;
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g_assert (src != dest); /* todo */
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while (size--) {
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/* in detail I do this
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red=(unsigned char)(*srcptr)&0x1f;
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green=(unsigned char)(((*srcptr)&0x07E0)>>5);
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blue=(unsigned char)(((*srcptr)&0xf800)>>11);
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*destptr++ = (((guint32)blue) << 3)
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| (((guint32)green) << (8+2))
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| (((guint32)red) << (16+3));
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*/
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*destptr++ = (((*srcptr)&0xf800)>>8)|(((*srcptr)&0x07E0)<<5)|(((*srcptr)&0x1f)<<19);
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srcptr++;
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}
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}
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