diff options
Diffstat (limited to 'libavcodec/aacsbr.c')
| -rw-r--r-- | libavcodec/aacsbr.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c index 0bfcabb06b..2f457b61cc 100644 --- a/libavcodec/aacsbr.c +++ b/libavcodec/aacsbr.c @@ -3,20 +3,20 @@ * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) * Copyright (c) 2009-2010 Alex Converse <alex.converse@gmail.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -33,9 +33,11 @@ #include "fft.h" #include "aacps.h" #include "libavutil/libm.h" +#include "libavutil/avassert.h" #include <stdint.h> #include <float.h> +#include <math.h> #define ENVELOPE_ADJUSTMENT_OFFSET 2 #define NOISE_FLOOR_OFFSET 6.0f @@ -129,6 +131,8 @@ av_cold void ff_aac_sbr_init(void) av_cold void ff_aac_sbr_ctx_init(AACContext *ac, SpectralBandReplication *sbr) { float mdct_scale; + if(sbr->mdct.mdct_bits) + return; sbr->kx[0] = sbr->kx[1] = 32; //Typo in spec, kx' inits to 32 sbr->data[0].e_a[1] = sbr->data[1].e_a[1] = -1; sbr->data[0].synthesis_filterbank_samples_offset = SBR_SYNTHESIS_BUF_SIZE - (1280 - 128); @@ -1457,6 +1461,7 @@ static void sbr_mapping(AACContext *ac, SpectralBandReplication *sbr, uint16_t *table = ch_data->bs_freq_res[e + 1] ? sbr->f_tablehigh : sbr->f_tablelow; int k; + av_assert0(sbr->kx[1] <= table[0]); for (i = 0; i < ilim; i++) for (m = table[i]; m < table[i + 1]; m++) sbr->e_origmapped[e][m - sbr->kx[1]] = ch_data->env_facs[e+1][i]; |