diff options
Diffstat (limited to 'faad2/src/libfaad/sbr_dec.h')
| -rw-r--r-- | faad2/src/libfaad/sbr_dec.h | 254 |
1 files changed, 254 insertions, 0 deletions
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
+
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