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102 lines
3.8 KiB
102 lines
3.8 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_AACPS_H |
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#define AVCODEC_AACPS_H |
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#include <stdint.h> |
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#include "libavutil/mem_internal.h" |
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#include "aacpsdsp.h" |
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#include "avcodec.h" |
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#include "get_bits.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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#define PS_BASELINE 0 ///< Operate in Baseline PS mode |
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///< Baseline implies 10 or 20 stereo bands, |
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///< mixing mode A, and no ipd/opd |
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#define numQMFSlots 32 //numTimeSlots * RATE |
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typedef struct PSCommonContext { |
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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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} PSCommonContext; |
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typedef struct PSContext { |
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PSCommonContext common; |
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DECLARE_ALIGNED(16, INTFLOAT, in_buf)[5][44][2]; |
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DECLARE_ALIGNED(16, INTFLOAT, delay)[PS_MAX_SSB][PS_QMF_TIME_SLOTS + PS_MAX_DELAY][2]; |
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DECLARE_ALIGNED(16, INTFLOAT, ap_delay)[PS_MAX_AP_BANDS][PS_AP_LINKS][PS_QMF_TIME_SLOTS + PS_MAX_AP_DELAY][2]; |
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DECLARE_ALIGNED(16, INTFLOAT, peak_decay_nrg)[34]; |
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DECLARE_ALIGNED(16, INTFLOAT, power_smooth)[34]; |
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DECLARE_ALIGNED(16, INTFLOAT, peak_decay_diff_smooth)[34]; |
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DECLARE_ALIGNED(16, INTFLOAT, H11)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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DECLARE_ALIGNED(16, INTFLOAT, H12)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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DECLARE_ALIGNED(16, INTFLOAT, H21)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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DECLARE_ALIGNED(16, INTFLOAT, H22)[2][PS_MAX_NUM_ENV+1][PS_MAX_NR_IIDICC]; |
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DECLARE_ALIGNED(16, INTFLOAT, Lbuf)[91][32][2]; |
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DECLARE_ALIGNED(16, INTFLOAT, Rbuf)[91][32][2]; |
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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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PSDSPContext dsp; |
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} PSContext; |
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extern const int8_t ff_k_to_i_20[]; |
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extern const int8_t ff_k_to_i_34[]; |
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void ff_ps_init_common(void); |
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void AAC_RENAME(ff_ps_init)(void); |
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void AAC_RENAME(ff_ps_ctx_init)(PSContext *ps); |
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int ff_ps_read_data(AVCodecContext *avctx, GetBitContext *gb, |
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PSCommonContext *ps, int bits_left); |
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int AAC_RENAME(ff_ps_apply)(AVCodecContext *avctx, PSContext *ps, INTFLOAT L[2][38][64], INTFLOAT R[2][38][64], int top); |
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#endif /* AVCODEC_AACPS_H */
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