diff options
Diffstat (limited to 'faad2/src/libfaad/sbr_tf_grid.c')
| -rw-r--r-- | faad2/src/libfaad/sbr_tf_grid.c | 261 |
1 files changed, 0 insertions, 261 deletions
diff --git a/faad2/src/libfaad/sbr_tf_grid.c b/faad2/src/libfaad/sbr_tf_grid.c deleted file mode 100644 index 16dbfb3..0000000 --- a/faad2/src/libfaad/sbr_tf_grid.c +++ /dev/null @@ -1,261 +0,0 @@ -/*
-** FAAD2 - Freeware Advanced Audio (AAC) Decoder including SBR decoding
-** Copyright (C) 2003-2005 M. Bakker, Nero AG, http://www.nero.com
-**
-** This program is free software; you can redistribute it and/or modify
-** it under the terms of the GNU General Public License as published by
-** the Free Software Foundation; either version 2 of the License, or
-** (at your option) any later version.
-**
-** This program 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 General Public License for more details.
-**
-** You should have received a copy of the GNU General Public License
-** along with this program; if not, write to the Free Software
-** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-**
-** Any non-GPL usage of this software or parts of this software is strictly
-** forbidden.
-**
-** The "appropriate copyright message" mentioned in section 2c of the GPLv2
-** must read: "Code from FAAD2 is copyright (c) Nero AG, www.nero.com"
-**
-** Commercial non-GPL licensing of this software is possible.
-** For more info contact Nero AG through Mpeg4AAClicense@nero.com.
-**
-** $Id: sbr_tf_grid.c,v 1.20 2008/09/19 22:50:20 menno Exp $
-**/
-
-/* Time/Frequency grid */
-
-#include "common.h"
-#include "structs.h"
-
-#ifdef SBR_DEC
-
-#include <stdlib.h>
-
-#include "sbr_syntax.h"
-#include "sbr_tf_grid.h"
-
-
-/* static function declarations */
-#if 0
-static int16_t rel_bord_lead(sbr_info *sbr, uint8_t ch, uint8_t l);
-static int16_t rel_bord_trail(sbr_info *sbr, uint8_t ch, uint8_t l);
-#endif
-static uint8_t middleBorder(sbr_info *sbr, uint8_t ch);
-
-
-/* function constructs new time border vector */
-/* first build into temp vector to be able to use previous vector on error */
-uint8_t envelope_time_border_vector(sbr_info *sbr, uint8_t ch)
-{
- uint8_t l, border, temp;
- uint8_t t_E_temp[6] = {0};
-
- t_E_temp[0] = sbr->rate * sbr->abs_bord_lead[ch];
- t_E_temp[sbr->L_E[ch]] = sbr->rate * sbr->abs_bord_trail[ch];
-
- switch (sbr->bs_frame_class[ch])
- {
- case FIXFIX:
- switch (sbr->L_E[ch])
- {
- case 4:
- temp = (sbr->numTimeSlots / 4);
- t_E_temp[3] = sbr->rate * 3 * temp;
- t_E_temp[2] = sbr->rate * 2 * temp;
- t_E_temp[1] = sbr->rate * temp;
- break;
- case 2:
- t_E_temp[1] = sbr->rate * (sbr->numTimeSlots / 2);
- break;
- default:
- break;
- }
- break;
-
- case FIXVAR:
- if (sbr->L_E[ch] > 1)
- {
- int8_t i = sbr->L_E[ch];
- border = sbr->abs_bord_trail[ch];
-
- for (l = 0; l < (sbr->L_E[ch] - 1); l++)
- {
- if (border < sbr->bs_rel_bord[ch][l])
- return 1;
-
- border -= sbr->bs_rel_bord[ch][l];
- t_E_temp[--i] = sbr->rate * border;
- }
- }
- break;
-
- case VARFIX:
- if (sbr->L_E[ch] > 1)
- {
- int8_t i = 1;
- border = sbr->abs_bord_lead[ch];
-
- for (l = 0; l < (sbr->L_E[ch] - 1); l++)
- {
- border += sbr->bs_rel_bord[ch][l];
-
- if (sbr->rate * border + sbr->tHFAdj > sbr->numTimeSlotsRate+sbr->tHFGen)
- return 1;
-
- t_E_temp[i++] = sbr->rate * border;
- }
- }
- break;
-
- case VARVAR:
- if (sbr->bs_num_rel_0[ch])
- {
- int8_t i = 1;
- border = sbr->abs_bord_lead[ch];
-
- for (l = 0; l < sbr->bs_num_rel_0[ch]; l++)
- {
- border += sbr->bs_rel_bord_0[ch][l];
-
- if (sbr->rate * border + sbr->tHFAdj > sbr->numTimeSlotsRate+sbr->tHFGen)
- return 1;
-
- t_E_temp[i++] = sbr->rate * border;
- }
- }
-
- if (sbr->bs_num_rel_1[ch])
- {
- int8_t i = sbr->L_E[ch];
- border = sbr->abs_bord_trail[ch];
-
- for (l = 0; l < sbr->bs_num_rel_1[ch]; l++)
- {
- if (border < sbr->bs_rel_bord_1[ch][l])
- return 1;
-
- border -= sbr->bs_rel_bord_1[ch][l];
- t_E_temp[--i] = sbr->rate * border;
- }
- }
- break;
- }
-
- /* no error occured, we can safely use this t_E vector */
- for (l = 0; l < 6; l++)
- {
- sbr->t_E[ch][l] = t_E_temp[l];
- }
-
- return 0;
-}
-
-void noise_floor_time_border_vector(sbr_info *sbr, uint8_t ch)
-{
- sbr->t_Q[ch][0] = sbr->t_E[ch][0];
-
- if (sbr->L_E[ch] == 1)
- {
- sbr->t_Q[ch][1] = sbr->t_E[ch][1];
- sbr->t_Q[ch][2] = 0;
- } else {
- uint8_t index = middleBorder(sbr, ch);
- sbr->t_Q[ch][1] = sbr->t_E[ch][index];
- sbr->t_Q[ch][2] = sbr->t_E[ch][sbr->L_E[ch]];
- }
-}
-
-#if 0
-static int16_t rel_bord_lead(sbr_info *sbr, uint8_t ch, uint8_t l)
-{
- uint8_t i;
- int16_t acc = 0;
-
- switch (sbr->bs_frame_class[ch])
- {
- case FIXFIX:
- return sbr->numTimeSlots/sbr->L_E[ch];
- case FIXVAR:
- return 0;
- case VARFIX:
- for (i = 0; i < l; i++)
- {
- acc += sbr->bs_rel_bord[ch][i];
- }
- return acc;
- case VARVAR:
- for (i = 0; i < l; i++)
- {
- acc += sbr->bs_rel_bord_0[ch][i];
- }
- return acc;
- }
-
- return 0;
-}
-
-static int16_t rel_bord_trail(sbr_info *sbr, uint8_t ch, uint8_t l)
-{
- uint8_t i;
- int16_t acc = 0;
-
- switch (sbr->bs_frame_class[ch])
- {
- case FIXFIX:
- case VARFIX:
- return 0;
- case FIXVAR:
- for (i = 0; i < l; i++)
- {
- acc += sbr->bs_rel_bord[ch][i];
- }
- return acc;
- case VARVAR:
- for (i = 0; i < l; i++)
- {
- acc += sbr->bs_rel_bord_1[ch][i];
- }
- return acc;
- }
-
- return 0;
-}
-#endif
-
-static uint8_t middleBorder(sbr_info *sbr, uint8_t ch)
-{
- int8_t retval = 0;
-
- switch (sbr->bs_frame_class[ch])
- {
- case FIXFIX:
- retval = sbr->L_E[ch]/2;
- break;
- case VARFIX:
- if (sbr->bs_pointer[ch] == 0)
- retval = 1;
- else if (sbr->bs_pointer[ch] == 1)
- retval = sbr->L_E[ch] - 1;
- else
- retval = sbr->bs_pointer[ch] - 1;
- break;
- case FIXVAR:
- case VARVAR:
- if (sbr->bs_pointer[ch] > 1)
- retval = sbr->L_E[ch] + 1 - sbr->bs_pointer[ch];
- else
- retval = sbr->L_E[ch] - 1;
- break;
- }
-
- return (retval > 0) ? retval : 0;
-}
-
-
-#endif
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