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79 lines
2.9 KiB
79 lines
2.9 KiB
/* |
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* MPEG-4 Parametric Stereo definitions and declarations |
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* Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_PS_H |
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#define AVCODEC_PS_H |
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#include <stdint.h> |
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#define PS_MAX_NUM_ENV 5 |
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#define PS_MAX_NR_IIDICC 34 |
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#define PS_MAX_NR_IPDOPD 17 |
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#define PS_MAX_SSB 91 |
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#define PS_MAX_AP_BANDS 50 |
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#define PS_QMF_TIME_SLOTS 32 |
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#define PS_MAX_DELAY 14 |
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#define PS_AP_LINKS 3 |
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#define PS_MAX_AP_DELAY 5 |
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typedef struct { |
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int start; |
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int enable_iid; |
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int iid_quant; |
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int nr_iid_par; |
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int nr_ipdopd_par; |
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int enable_icc; |
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int icc_mode; |
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int nr_icc_par; |
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int enable_ext; |
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int frame_class; |
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int num_env_old; |
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int num_env; |
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int enable_ipdopd; |
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int border_position[PS_MAX_NUM_ENV+1]; |
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int8_t iid_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Intensity Difference Parameters |
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int8_t icc_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-Channel Coherence Parameters |
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/* ipd/opd is iid/icc sized so that the same functions can handle both */ |
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int8_t ipd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Inter-channel Phase Difference Parameters |
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int8_t opd_par[PS_MAX_NUM_ENV][PS_MAX_NR_IIDICC]; //<Overall Phase Difference Parameters |
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int is34bands; |
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int is34bands_old; |
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float in_buf[5][44][2]; |
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float delay[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2]; |
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float ap_delay[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2]; |
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float peak_decay_nrg[34]; |
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float power_smooth[34]; |
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float peak_decay_diff_smooth[34]; |
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float H11[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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float H12[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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float H21[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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float H22[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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int8_t opd_hist[PS_MAX_NR_IIDICC]; |
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int8_t ipd_hist[PS_MAX_NR_IIDICC]; |
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} PSContext; |
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void ff_ps_init(void); |
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void ff_ps_ctx_init(PSContext *ps); |
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int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, PSContext *ps, int bits_left); |
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int ff_ps_apply(AVCodecContext *avctx, PSContext *ps, float L[2][38][64], float R[2][38][64], int top); |
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#endif /* AVCODEC_PS_H */
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