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diff --git a/faad2/src/libfaad/ssr.c b/faad2/src/libfaad/ssr.c
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+/*
+** 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: ssr.c,v 1.19 2007/11/01 12:33:36 menno Exp $
+**/
+
+#include "common.h"
+#include "structs.h"
+
+#ifdef SSR_DEC
+
+#include "syntax.h"
+#include "filtbank.h"
+#include "ssr.h"
+#include "ssr_fb.h"
+
+void ssr_decode(ssr_info *ssr, fb_info *fb, uint8_t window_sequence,
+ uint8_t window_shape, uint8_t window_shape_prev,
+ real_t *freq_in, real_t *time_out, real_t *overlap,
+ real_t ipqf_buffer[SSR_BANDS][96/4],
+ real_t *prev_fmd, uint16_t frame_len)
+{
+ uint8_t band;
+ uint16_t ssr_frame_len = frame_len/SSR_BANDS;
+ real_t time_tmp[2048] = {0};
+ real_t output[1024] = {0};
+
+ for (band = 0; band < SSR_BANDS; band++)
+ {
+ int16_t j;
+
+ /* uneven bands have inverted frequency scale */
+ if (band == 1 || band == 3)
+ {
+ for (j = 0; j < ssr_frame_len/2; j++)
+ {
+ real_t tmp;
+ tmp = freq_in[j + ssr_frame_len*band];
+ freq_in[j + ssr_frame_len*band] =
+ freq_in[ssr_frame_len - j - 1 + ssr_frame_len*band];
+ freq_in[ssr_frame_len - j - 1 + ssr_frame_len*band] = tmp;
+ }
+ }
+
+ /* non-overlapping inverse filterbank for SSR */
+ ssr_ifilter_bank(fb, window_sequence, window_shape, window_shape_prev,
+ freq_in + band*ssr_frame_len, time_tmp + band*ssr_frame_len,
+ ssr_frame_len);
+
+ /* gain control */
+ ssr_gain_control(ssr, time_tmp, output, overlap, prev_fmd,
+ band, window_sequence, ssr_frame_len);
+ }
+
+ /* inverse pqf to bring subbands together again */
+ ssr_ipqf(ssr, output, time_out, ipqf_buffer, frame_len, SSR_BANDS);
+}
+
+static void ssr_gain_control(ssr_info *ssr, real_t *data, real_t *output,
+ real_t *overlap, real_t *prev_fmd, uint8_t band,
+ uint8_t window_sequence, uint16_t frame_len)
+{
+ uint16_t i;
+ real_t gc_function[2*1024/SSR_BANDS];
+
+ if (window_sequence != EIGHT_SHORT_SEQUENCE)
+ {
+ ssr_gc_function(ssr, &prev_fmd[band * frame_len*2],
+ gc_function, window_sequence, band, frame_len);
+
+ for (i = 0; i < frame_len*2; i++)
+ data[band * frame_len*2 + i] *= gc_function[i];
+ for (i = 0; i < frame_len; i++)
+ {
+ output[band*frame_len + i] = overlap[band*frame_len + i] +
+ data[band*frame_len*2 + i];
+ }
+ for (i = 0; i < frame_len; i++)
+ {
+ overlap[band*frame_len + i] =
+ data[band*frame_len*2 + frame_len + i];
+ }
+ } else {
+ uint8_t w;
+ for (w = 0; w < 8; w++)
+ {
+ uint16_t frame_len8 = frame_len/8;
+ uint16_t frame_len16 = frame_len/16;
+
+ ssr_gc_function(ssr, &prev_fmd[band*frame_len*2 + w*frame_len*2/8],
+ gc_function, window_sequence, frame_len);
+
+ for (i = 0; i < frame_len8*2; i++)
+ data[band*frame_len*2 + w*frame_len8*2+i] *= gc_function[i];
+ for (i = 0; i < frame_len8; i++)
+ {
+ overlap[band*frame_len + i + 7*frame_len16 + w*frame_len8] +=
+ data[band*frame_len*2 + 2*w*frame_len8 + i];
+ }
+ for (i = 0; i < frame_len8; i++)
+ {
+ overlap[band*frame_len + i + 7*frame_len16 + (w+1)*frame_len8] =
+ data[band*frame_len*2 + 2*w*frame_len8 + frame_len8 + i];
+ }
+ }
+ for (i = 0; i < frame_len; i++)
+ output[band*frame_len + i] = overlap[band*frame_len + i];
+ for (i = 0; i < frame_len; i++)
+ overlap[band*frame_len + i] = overlap[band*frame_len + i + frame_len];
+ }
+}
+
+static void ssr_gc_function(ssr_info *ssr, real_t *prev_fmd,
+ real_t *gc_function, uint8_t window_sequence,
+ uint8_t band, uint16_t frame_len)
+{
+ uint16_t i;
+ uint16_t len_area1, len_area2;
+ int32_t aloc[10];
+ real_t alev[10];
+
+ switch (window_sequence)
+ {
+ case ONLY_LONG_SEQUENCE:
+ len_area1 = frame_len/SSR_BANDS;
+ len_area2 = 0;
+ break;
+ case LONG_START_SEQUENCE:
+ len_area1 = (frame_len/SSR_BANDS)*7/32;
+ len_area2 = (frame_len/SSR_BANDS)/16;
+ break;
+ case EIGHT_SHORT_SEQUENCE:
+ len_area1 = (frame_len/8)/SSR_BANDS;
+ len_area2 = 0;
+ break;
+ case LONG_STOP_SEQUENCE:
+ len_area1 = (frame_len/SSR_BANDS);
+ len_area2 = 0;
+ break;
+ }
+
+ /* decode bitstream information */
+
+ /* build array M */
+
+
+ for (i = 0; i < frame_len*2; i++)
+ gc_function[i] = 1;
+}
+
+#endif