mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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2a4bfc0fc8
Original commit message from CVS: A simple video scaler as a library and an Element. Also a little non working mpeg2 to mpeg1 converter (still struggling with the quantisation).
88 lines
2.5 KiB
C
88 lines
2.5 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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//#define DEBUG_ENABLED
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#include <gst/gst.h>
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#include <gstcolorspace.h>
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static GstBuffer *gst_colorspace_rgb24_to_bgr24(GstBuffer *src, GstColorSpaceParameters *params);
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static GstBuffer *gst_colorspace_rgb_to_rgb_identity(GstBuffer *src, GstColorSpaceParameters *params);
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GstColorSpaceConverter gst_colorspace_rgb2rgb_get_converter(GstColorSpace src, GstColorSpace dest) {
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switch(src) {
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case GST_COLORSPACE_RGB24:
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switch(dest) {
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case GST_COLORSPACE_RGB24:
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return gst_colorspace_rgb_to_rgb_identity;
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case GST_COLORSPACE_BGR24:
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return gst_colorspace_rgb24_to_bgr24;
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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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switch(dest) {
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case GST_COLORSPACE_RGB24:
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return gst_colorspace_rgb24_to_bgr24;
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case GST_COLORSPACE_BGR24:
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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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default:
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break;
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}
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g_print("gst_colorspace: conversion not supported\n");
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return NULL;
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}
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static GstBuffer *gst_colorspace_rgb_to_rgb_identity(GstBuffer *src, GstColorSpaceParameters *params) {
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return src;
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}
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static GstBuffer *gst_colorspace_rgb24_to_bgr24(GstBuffer *src, GstColorSpaceParameters *params) {
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gint size;
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gchar temp;
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gchar *data;
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DEBUG("gst_colorspace_rgb24_to_bgr24 %d\n", GST_BUFFER_SIZE(src));
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size = GST_BUFFER_SIZE(src)/3;
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if (params != NULL && params->outbuf != NULL) {
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data = params->outbuf;
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DEBUG("gst_colorspace: to buffer %p\n", data);
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}
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else {
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data = GST_BUFFER_DATA(src);
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}
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while (size--) {
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temp = data[0];
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data[0] = data[2];
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data[2] = temp;
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data+=3;
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}
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DEBUG("gst_colorspace_rgb24_to_bgr24 end %d\n", GST_BUFFER_SIZE(src));
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return src;
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}
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