From 086b25d40a8fc3606d70c32af7f6af178e2d804d Mon Sep 17 00:00:00 2001 From: Christian Schaller Date: Fri, 6 May 2005 11:41:28 +0000 Subject: remove gst-libs from gst-plugins module as it is in gst-plugins-base now Original commit message from CVS: remove gst-libs from gst-plugins module as it is in gst-plugins-base now --- gst-libs/gst/idct/floatidct.c | 106 ------------------------------------------ 1 file changed, 106 deletions(-) delete mode 100644 gst-libs/gst/idct/floatidct.c (limited to 'gst-libs/gst/idct/floatidct.c') diff --git a/gst-libs/gst/idct/floatidct.c b/gst-libs/gst/idct/floatidct.c deleted file mode 100644 index 65e01d40..00000000 --- a/gst-libs/gst/idct/floatidct.c +++ /dev/null @@ -1,106 +0,0 @@ -/* Reference_IDCT.c, Inverse Discrete Fourier Transform, double precision */ - -/* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */ - -/* - * Disclaimer of Warranty - * - * These software programs are available to the user without any license fee or - * royalty on an "as is" basis. The MPEG Software Simulation Group disclaims - * any and all warranties, whether express, implied, or statuary, including any - * implied warranties or merchantability or of fitness for a particular - * purpose. In no event shall the copyright-holder be liable for any - * incidental, punitive, or consequential damages of any kind whatsoever - * arising from the use of these programs. - * - * This disclaimer of warranty extends to the user of these programs and user's - * customers, employees, agents, transferees, successors, and assigns. - * - * The MPEG Software Simulation Group does not represent or warrant that the - * programs furnished hereunder are free of infringement of any third-party - * patents. - * - * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware, - * are subject to royalty fees to patent holders. Many of these patents are - * general enough such that they are unavoidable regardless of implementation - * design. - * - */ - -/* Perform IEEE 1180 reference (64-bit floating point, separable 8x1 - * direct matrix multiply) Inverse Discrete Cosine Transform -*/ - - -/* Here we use math.h to generate constants. Compiler results may - vary a little */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include - -#ifndef PI -# ifdef M_PI -# define PI M_PI -# else -# define PI 3.14159265358979323846 -# endif -#endif - -/* private data */ - -/* cosine transform matrix for 8x1 IDCT */ -static double gst_idct_float_c[8][8]; - -/* initialize DCT coefficient matrix */ - -void -gst_idct_init_float_idct () -{ - int freq, time; - double scale; - - for (freq = 0; freq < 8; freq++) { - scale = (freq == 0) ? sqrt (0.125) : 0.5; - for (time = 0; time < 8; time++) - gst_idct_float_c[freq][time] = - scale * cos ((PI / 8.0) * freq * (time + 0.5)); - } -} - -/* perform IDCT matrix multiply for 8x8 coefficient block */ - -void -gst_idct_float_idct (block) - short *block; -{ - int i, j, k, v; - double partial_product; - double tmp[64]; - - for (i = 0; i < 8; i++) - for (j = 0; j < 8; j++) { - partial_product = 0.0; - - for (k = 0; k < 8; k++) - partial_product += gst_idct_float_c[k][j] * block[8 * i + k]; - - tmp[8 * i + j] = partial_product; - } - - /* Transpose operation is integrated into address mapping by switching - loop order of i and j */ - - for (j = 0; j < 8; j++) - for (i = 0; i < 8; i++) { - partial_product = 0.0; - - for (k = 0; k < 8; k++) - partial_product += gst_idct_float_c[k][i] * tmp[8 * k + j]; - - v = (int) floor (partial_product + 0.5); - block[8 * i + j] = (v < -256) ? -256 : ((v > 255) ? 255 : v); - } -} -- cgit v1.2.1