gstreamer/libs/colorspace/rgb2rgb.c

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/* Gnome-Streamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
//#define DEBUG_ENABLED
#include <gst/gst.h>
#include <gstcolorspace.h>
static GstBuffer *gst_colorspace_rgb24_to_bgr24(GstBuffer *src, GstColorSpaceParameters *params);
static GstBuffer *gst_colorspace_rgb_to_rgb_identity(GstBuffer *src, GstColorSpaceParameters *params);
GstColorSpaceConverter gst_colorspace_rgb2rgb_get_converter(GstColorSpace src, GstColorSpace dest) {
switch(src) {
case GST_COLORSPACE_RGB24:
switch(dest) {
case GST_COLORSPACE_RGB24:
return gst_colorspace_rgb_to_rgb_identity;
case GST_COLORSPACE_BGR24:
return gst_colorspace_rgb24_to_bgr24;
default:
break;
}
break;
case GST_COLORSPACE_BGR24:
switch(dest) {
case GST_COLORSPACE_RGB24:
return gst_colorspace_rgb24_to_bgr24;
case GST_COLORSPACE_BGR24:
return gst_colorspace_rgb_to_rgb_identity;
default:
break;
}
break;
default:
break;
}
g_print("gst_colorspace: conversion not supported\n");
return NULL;
}
static GstBuffer *gst_colorspace_rgb_to_rgb_identity(GstBuffer *src, GstColorSpaceParameters *params) {
return src;
}
static GstBuffer *gst_colorspace_rgb24_to_bgr24(GstBuffer *src, GstColorSpaceParameters *params) {
gint size;
gchar temp;
gchar *data;
DEBUG("gst_colorspace_rgb24_to_bgr24 %d\n", GST_BUFFER_SIZE(src));
size = GST_BUFFER_SIZE(src)/3;
if (params != NULL && params->outbuf != NULL) {
data = params->outbuf;
DEBUG("gst_colorspace: to buffer %p\n", data);
}
else {
data = GST_BUFFER_DATA(src);
}
while (size--) {
temp = data[0];
data[0] = data[2];
data[2] = temp;
data+=3;
}
DEBUG("gst_colorspace_rgb24_to_bgr24 end %d\n", GST_BUFFER_SIZE(src));
return src;
}