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Diffstat (limited to 'ffmpeg/libavcodec/g722.h')
| -rw-r--r-- | ffmpeg/libavcodec/g722.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/ffmpeg/libavcodec/g722.h b/ffmpeg/libavcodec/g722.h deleted file mode 100644 index 3f89827..0000000 --- a/ffmpeg/libavcodec/g722.h +++ /dev/null @@ -1,77 +0,0 @@ -/* - * Copyright (c) CMU 1993 Computer Science, Speech Group - * Chengxiang Lu and Alex Hauptmann - * Copyright (c) 2005 Steve Underwood <steveu at coppice.org> - * Copyright (c) 2009 Kenan Gillet - * Copyright (c) 2010 Martin Storsjo - * - * This file is part of FFmpeg. - * - * 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. - * - * 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 FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#ifndef AVCODEC_G722_H -#define AVCODEC_G722_H - -#include <stdint.h> -#include "avcodec.h" - -#define PREV_SAMPLES_BUF_SIZE 1024 - -typedef struct G722Context { - const AVClass *class; - int bits_per_codeword; - int16_t prev_samples[PREV_SAMPLES_BUF_SIZE]; ///< memory of past decoded samples - int prev_samples_pos; ///< the number of values in prev_samples - - /** - * The band[0] and band[1] correspond respectively to the lower band and higher band. - */ - struct G722Band { - int16_t s_predictor; ///< predictor output value - int32_t s_zero; ///< previous output signal from zero predictor - int8_t part_reconst_mem[2]; ///< signs of previous partially reconstructed signals - int16_t prev_qtzd_reconst; ///< previous quantized reconstructed signal (internal value, using low_inv_quant4) - int16_t pole_mem[2]; ///< second-order pole section coefficient buffer - int32_t diff_mem[6]; ///< quantizer difference signal memory - int16_t zero_mem[6]; ///< Seventh-order zero section coefficient buffer - int16_t log_factor; ///< delayed 2-logarithmic quantizer factor - int16_t scale_factor; ///< delayed quantizer scale factor - } band[2]; - - struct TrellisNode { - struct G722Band state; - uint32_t ssd; - int path; - } *node_buf[2], **nodep_buf[2]; - - struct TrellisPath { - int value; - int prev; - } *paths[2]; -} G722Context; - -extern const int16_t ff_g722_high_inv_quant[4]; -extern const int16_t ff_g722_low_inv_quant4[16]; -extern const int16_t ff_g722_low_inv_quant6[64]; - -void ff_g722_update_low_predictor(struct G722Band *band, const int ilow); - -void ff_g722_update_high_predictor(struct G722Band *band, const int dhigh, - const int ihigh); - -void ff_g722_apply_qmf(const int16_t *prev_samples, int *xout1, int *xout2); - -#endif /* AVCODEC_G722_H */ |