From cc2160de5cc05dc3aa77f3a34358e66f6193c8c9 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 26 Jun 2012 20:35:30 +0200 Subject: Add support for AAC. --- faad2/src/libfaad/sbr_dec.h | 254 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 254 insertions(+) create mode 100644 faad2/src/libfaad/sbr_dec.h (limited to 'faad2/src/libfaad/sbr_dec.h') diff --git a/faad2/src/libfaad/sbr_dec.h b/faad2/src/libfaad/sbr_dec.h new file mode 100644 index 0000000..e9aa6a0 --- /dev/null +++ b/faad2/src/libfaad/sbr_dec.h @@ -0,0 +1,254 @@ +/* +** 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_dec.h,v 1.39 2007/11/01 12:33:34 menno Exp $ +**/ + +#ifndef __SBR_DEC_H__ +#define __SBR_DEC_H__ + +#ifdef __cplusplus +extern "C" { +#endif + +#ifdef PS_DEC +#include "ps_dec.h" +#endif +#ifdef DRM_PS +#include "drm_dec.h" +#endif + +/* MAX_NTSRHFG: maximum of number_time_slots * rate + HFGen. 16*2+8 */ +#define MAX_NTSRHFG 40 +#define MAX_NTSR 32 /* max number_time_slots * rate, ok for DRM and not DRM mode */ + +/* MAX_M: maximum value for M */ +#define MAX_M 49 +/* MAX_L_E: maximum value for L_E */ +#define MAX_L_E 5 + +typedef struct { + real_t *x; + int16_t x_index; + uint8_t channels; +} qmfa_info; + +typedef struct { + real_t *v; + int16_t v_index; + uint8_t channels; +} qmfs_info; + +typedef struct +{ + uint32_t sample_rate; + uint32_t maxAACLine; + + uint8_t rate; + uint8_t just_seeked; + uint8_t ret; + + uint8_t amp_res[2]; + + uint8_t k0; + uint8_t kx; + uint8_t M; + uint8_t N_master; + uint8_t N_high; + uint8_t N_low; + uint8_t N_Q; + uint8_t N_L[4]; + uint8_t n[2]; + + uint8_t f_master[64]; + uint8_t f_table_res[2][64]; + uint8_t f_table_noise[64]; + uint8_t f_table_lim[4][64]; +#ifdef SBR_LOW_POWER + uint8_t f_group[5][64]; + uint8_t N_G[5]; +#endif + + uint8_t table_map_k_to_g[64]; + + uint8_t abs_bord_lead[2]; + uint8_t abs_bord_trail[2]; + uint8_t n_rel_lead[2]; + uint8_t n_rel_trail[2]; + + uint8_t L_E[2]; + uint8_t L_E_prev[2]; + uint8_t L_Q[2]; + + uint8_t t_E[2][MAX_L_E+1]; + uint8_t t_Q[2][3]; + uint8_t f[2][MAX_L_E+1]; + uint8_t f_prev[2]; + + real_t *G_temp_prev[2][5]; + real_t *Q_temp_prev[2][5]; + int8_t GQ_ringbuf_index[2]; + + int16_t E[2][64][MAX_L_E]; + int16_t E_prev[2][64]; +#ifndef FIXED_POINT + real_t E_orig[2][64][MAX_L_E]; +#endif + real_t E_curr[2][64][MAX_L_E]; + int32_t Q[2][64][2]; +#ifndef FIXED_POINT + real_t Q_div[2][64][2]; + real_t Q_div2[2][64][2]; +#endif + int32_t Q_prev[2][64]; + + int8_t l_A[2]; + int8_t l_A_prev[2]; + + uint8_t bs_invf_mode[2][MAX_L_E]; + uint8_t bs_invf_mode_prev[2][MAX_L_E]; + real_t bwArray[2][64]; + real_t bwArray_prev[2][64]; + + uint8_t noPatches; + uint8_t patchNoSubbands[64]; + uint8_t patchStartSubband[64]; + + uint8_t bs_add_harmonic[2][64]; + uint8_t bs_add_harmonic_prev[2][64]; + + uint16_t index_noise_prev[2]; + uint8_t psi_is_prev[2]; + + uint8_t bs_start_freq_prev; + uint8_t bs_stop_freq_prev; + uint8_t bs_xover_band_prev; + uint8_t bs_freq_scale_prev; + uint8_t bs_alter_scale_prev; + uint8_t bs_noise_bands_prev; + + int8_t prevEnvIsShort[2]; + + int8_t kx_prev; + uint8_t bsco; + uint8_t bsco_prev; + uint8_t M_prev; + uint16_t frame_len; + + uint8_t Reset; + uint32_t frame; + uint32_t header_count; + + uint8_t id_aac; + qmfa_info *qmfa[2]; + qmfs_info *qmfs[2]; + + qmf_t Xsbr[2][MAX_NTSRHFG][64]; + +#ifdef DRM + uint8_t Is_DRM_SBR; +#ifdef DRM_PS + drm_ps_info *drm_ps; +#endif +#endif + + uint8_t numTimeSlotsRate; + uint8_t numTimeSlots; + uint8_t tHFGen; + uint8_t tHFAdj; + +#ifdef PS_DEC + ps_info *ps; +#endif +#if (defined(PS_DEC) || defined(DRM_PS)) + uint8_t ps_used; + uint8_t psResetFlag; +#endif + + /* to get it compiling */ + /* we'll see during the coding of all the tools, whether + these are all used or not. + */ + uint8_t bs_header_flag; + uint8_t bs_crc_flag; + uint16_t bs_sbr_crc_bits; + uint8_t bs_protocol_version; + uint8_t bs_amp_res; + uint8_t bs_start_freq; + uint8_t bs_stop_freq; + uint8_t bs_xover_band; + uint8_t bs_freq_scale; + uint8_t bs_alter_scale; + uint8_t bs_noise_bands; + uint8_t bs_limiter_bands; + uint8_t bs_limiter_gains; + uint8_t bs_interpol_freq; + uint8_t bs_smoothing_mode; + uint8_t bs_samplerate_mode; + uint8_t bs_add_harmonic_flag[2]; + uint8_t bs_add_harmonic_flag_prev[2]; + uint8_t bs_extended_data; + uint8_t bs_extension_id; + uint8_t bs_extension_data; + uint8_t bs_coupling; + uint8_t bs_frame_class[2]; + uint8_t bs_rel_bord[2][9]; + uint8_t bs_rel_bord_0[2][9]; + uint8_t bs_rel_bord_1[2][9]; + uint8_t bs_pointer[2]; + uint8_t bs_abs_bord_0[2]; + uint8_t bs_abs_bord_1[2]; + uint8_t bs_num_rel_0[2]; + uint8_t bs_num_rel_1[2]; + uint8_t bs_df_env[2][9]; + uint8_t bs_df_noise[2][3]; +} sbr_info; + +sbr_info *sbrDecodeInit(uint16_t framelength, uint8_t id_aac, + uint32_t sample_rate, uint8_t downSampledSBR +#ifdef DRM + , uint8_t IsDRM +#endif + ); +void sbrDecodeEnd(sbr_info *sbr); +void sbrReset(sbr_info *sbr); + +uint8_t sbrDecodeCoupleFrame(sbr_info *sbr, real_t *left_chan, real_t *right_chan, + const uint8_t just_seeked, const uint8_t downSampledSBR); +uint8_t sbrDecodeSingleFrame(sbr_info *sbr, real_t *channel, + const uint8_t just_seeked, const uint8_t downSampledSBR); +#if (defined(PS_DEC) || defined(DRM_PS)) +uint8_t sbrDecodeSingleFramePS(sbr_info *sbr, real_t *left_channel, real_t *right_channel, + const uint8_t just_seeked, const uint8_t downSampledSBR); +#endif + + +#ifdef __cplusplus +} +#endif +#endif + -- cgit v1.2.3