/* * MPEG-4 Parametric Stereo definitions and declarations * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> * * This file is part of Libav. * * Libav 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, * 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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef AVCODEC_PS_H #define AVCODEC_PS_H #include <stdint.h> #include "aacpsdsp.h" #include "avcodec.h" #include "get_bits.h" #define PS_MAX_NUM_ENV 5 #define PS_MAX_NR_IIDICC 34 #define PS_MAX_NR_IPDOPD 17 #define PS_MAX_SSB 91 #define PS_MAX_AP_BANDS 50 #define PS_QMF_TIME_SLOTS 32 #define PS_MAX_DELAY 14 #define PS_AP_LINKS 3 #define PS_MAX_AP_DELAY 5 typedef struct PSContext { int start; int enable_iid; int iid_quant; int nr_iid_par; int nr_ipdopd_par; int enable_icc; int icc_mode; int nr_icc_par; int enable_ext; int frame_class; int num_env_old; int num_env; int enable_ipdopd; int border_position[PS_MAX_NUM_ENV+1]; int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Intensity Difference Parameters int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-Channel Coherence Parameters /* ipd/opd is iid/icc sized so that the same functions can handle both */ int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Inter-channel Phase Difference Parameters int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; ///< Overall Phase Difference Parameters int is34bands; int is34bands_old; DECLARE_ALIGNED(16, float, in_buf)[5][44][2]; DECLARE_ALIGNED(16, float, delay)[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2]; DECLARE_ALIGNED(16, float, ap_delay)[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2]; DECLARE_ALIGNED(16, float, peak_decay_nrg)[34]; DECLARE_ALIGNED(16, float, power_smooth)[34]; DECLARE_ALIGNED(16, float, peak_decay_diff_smooth)[34]; DECLARE_ALIGNED(16, float, H11)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; DECLARE_ALIGNED(16, float, H12)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; DECLARE_ALIGNED(16, float, H21)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; DECLARE_ALIGNED(16, float, H22)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; int8_t opd_hist[PS_MAX_NR_IIDICC]; int8_t ipd_hist[PS_MAX_NR_IIDICC]; PSDSPContext dsp; } PSContext; void ff_ps_init(void); void ff_ps_ctx_init(PSContext *ps); int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left); int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top); #endif /* AVCODEC_PS_H */