diff options
Diffstat (limited to 'libavcodec/sbr.h')
| -rw-r--r-- | libavcodec/sbr.h | 101 |
1 files changed, 63 insertions, 38 deletions
diff --git a/libavcodec/sbr.h b/libavcodec/sbr.h index a47ad6eedb..66a88a2898 100644 --- a/libavcodec/sbr.h +++ b/libavcodec/sbr.h @@ -3,20 +3,20 @@ * Copyright (c) 2008-2009 Robert Swain ( rob opendot cl ) * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg 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, + * FFmpeg 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 + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -34,6 +34,8 @@ #include "aacps.h" #include "sbrdsp.h" +typedef struct AACContext AACContext; + /** * Spectral Band Replication header - spectrum parameters that invoke a reset if they differ from the previous header. */ @@ -64,9 +66,9 @@ typedef struct SBRData { */ unsigned bs_frame_class; unsigned bs_add_harmonic_flag; - unsigned bs_num_env; + AAC_SIGNE bs_num_env; uint8_t bs_freq_res[7]; - unsigned bs_num_noise; + AAC_SIGNE bs_num_noise; uint8_t bs_df_env[5]; uint8_t bs_df_noise[2]; uint8_t bs_invf_mode[2][5]; @@ -78,25 +80,25 @@ typedef struct SBRData { * @name State variables * @{ */ - DECLARE_ALIGNED(32, float, synthesis_filterbank_samples)[SBR_SYNTHESIS_BUF_SIZE]; - DECLARE_ALIGNED(32, float, analysis_filterbank_samples) [1312]; + DECLARE_ALIGNED(32, INTFLOAT, synthesis_filterbank_samples)[SBR_SYNTHESIS_BUF_SIZE]; + DECLARE_ALIGNED(32, INTFLOAT, analysis_filterbank_samples) [1312]; int synthesis_filterbank_samples_offset; ///l_APrev and l_A int e_a[2]; ///Chirp factors - float bw_array[5]; + INTFLOAT bw_array[5]; ///QMF values of the original signal - float W[2][32][32][2]; + INTFLOAT W[2][32][32][2]; ///QMF output of the HF adjustor int Ypos; - DECLARE_ALIGNED(16, float, Y)[2][38][64][2]; - DECLARE_ALIGNED(16, float, g_temp)[42][48]; - float q_temp[42][48]; + DECLARE_ALIGNED(16, INTFLOAT, Y)[2][38][64][2]; + DECLARE_ALIGNED(16, AAC_FLOAT, g_temp)[42][48]; + AAC_FLOAT q_temp[42][48]; uint8_t s_indexmapped[8][48]; ///Envelope scalefactors - float env_facs[6][48]; + AAC_FLOAT env_facs[6][48]; ///Noise scalefactors - float noise_facs[3][5]; + AAC_FLOAT noise_facs[3][5]; ///Envelope time borders uint8_t t_env[8]; ///Envelope time border of the last envelope of the previous frame @@ -108,12 +110,34 @@ typedef struct SBRData { /** @} */ } SBRData; +typedef struct SpectralBandReplication SpectralBandReplication; + +/** + * aacsbr functions pointers + */ +typedef struct AACSBRContext { + int (*sbr_lf_gen)(AACContext *ac, SpectralBandReplication *sbr, + INTFLOAT X_low[32][40][2], const INTFLOAT W[2][32][32][2], + int buf_idx); + void (*sbr_hf_assemble)(INTFLOAT Y1[38][64][2], + const INTFLOAT X_high[64][40][2], + SpectralBandReplication *sbr, SBRData *ch_data, + const int e_a[2]); + int (*sbr_x_gen)(SpectralBandReplication *sbr, INTFLOAT X[2][38][64], + const INTFLOAT Y0[38][64][2], const INTFLOAT Y1[38][64][2], + const INTFLOAT X_low[32][40][2], int ch); + void (*sbr_hf_inverse_filter)(SBRDSPContext *dsp, + INTFLOAT (*alpha0)[2], INTFLOAT (*alpha1)[2], + const INTFLOAT X_low[32][40][2], int k0); +} AACSBRContext; + /** * Spectral Band Replication */ -typedef struct SpectralBandReplication { +struct SpectralBandReplication { int sample_rate; int start; + int id_aac; int reset; SpectrumParameters spectrum_params; int bs_amp_res_header; @@ -127,23 +151,23 @@ typedef struct SpectralBandReplication { unsigned bs_smoothing_mode; /** @} */ unsigned bs_coupling; - unsigned k[5]; ///< k0, k1, k2 + AAC_SIGNE k[5]; ///< k0, k1, k2 ///kx', and kx respectively, kx is the first QMF subband where SBR is used. ///kx' is its value from the previous frame - unsigned kx[2]; + AAC_SIGNE kx[2]; ///M' and M respectively, M is the number of QMF subbands that use SBR. - unsigned m[2]; + AAC_SIGNE m[2]; unsigned kx_and_m_pushed; ///The number of frequency bands in f_master - unsigned n_master; + AAC_SIGNE n_master; SBRData data[2]; PSContext ps; ///N_Low and N_High respectively, the number of frequency bands for low and high resolution - unsigned n[2]; + AAC_SIGNE n[2]; ///Number of noise floor bands - unsigned n_q; + AAC_SIGNE n_q; ///Number of limiter bands - unsigned n_lim; + AAC_SIGNE n_lim; ///The master QMF frequency grouping uint16_t f_master[49]; ///Frequency borders for low resolution SBR @@ -153,37 +177,38 @@ typedef struct SpectralBandReplication { ///Frequency borders for noise floors uint16_t f_tablenoise[6]; ///Frequency borders for the limiter - uint16_t f_tablelim[29]; - unsigned num_patches; + uint16_t f_tablelim[30]; + AAC_SIGNE num_patches; uint8_t patch_num_subbands[6]; uint8_t patch_start_subband[6]; ///QMF low frequency input to the HF generator - DECLARE_ALIGNED(16, float, X_low)[32][40][2]; + DECLARE_ALIGNED(16, INTFLOAT, X_low)[32][40][2]; ///QMF output of the HF generator - DECLARE_ALIGNED(16, float, X_high)[64][40][2]; + DECLARE_ALIGNED(16, INTFLOAT, X_high)[64][40][2]; ///QMF values of the reconstructed signal - DECLARE_ALIGNED(16, float, X)[2][2][38][64]; + DECLARE_ALIGNED(16, INTFLOAT, X)[2][2][38][64]; ///Zeroth coefficient used to filter the subband signals - DECLARE_ALIGNED(16, float, alpha0)[64][2]; + DECLARE_ALIGNED(16, INTFLOAT, alpha0)[64][2]; ///First coefficient used to filter the subband signals - DECLARE_ALIGNED(16, float, alpha1)[64][2]; + DECLARE_ALIGNED(16, INTFLOAT, alpha1)[64][2]; ///Dequantized envelope scalefactors, remapped - float e_origmapped[7][48]; + AAC_FLOAT e_origmapped[7][48]; ///Dequantized noise scalefactors, remapped - float q_mapped[7][48]; + AAC_FLOAT q_mapped[7][48]; ///Sinusoidal presence, remapped uint8_t s_mapped[7][48]; ///Estimated envelope - float e_curr[7][48]; + AAC_FLOAT e_curr[7][48]; ///Amplitude adjusted noise scalefactors - float q_m[7][48]; + AAC_FLOAT q_m[7][48]; ///Sinusoidal levels - float s_m[7][48]; - float gain[7][48]; - DECLARE_ALIGNED(32, float, qmf_filter_scratch)[5][64]; + AAC_FLOAT s_m[7][48]; + AAC_FLOAT gain[7][48]; + DECLARE_ALIGNED(32, INTFLOAT, qmf_filter_scratch)[5][64]; FFTContext mdct_ana; FFTContext mdct; SBRDSPContext dsp; -} SpectralBandReplication; + AACSBRContext c; +}; #endif /* AVCODEC_SBR_H */ |