diff options
Diffstat (limited to 'ffmpeg/libavcodec/atrac.h')
| -rw-r--r-- | ffmpeg/libavcodec/atrac.h | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/ffmpeg/libavcodec/atrac.h b/ffmpeg/libavcodec/atrac.h deleted file mode 100644 index 05208bb..0000000 --- a/ffmpeg/libavcodec/atrac.h +++ /dev/null @@ -1,97 +0,0 @@ -/* - * common functions for the ATRAC family of decoders - * - * Copyright (c) 2009-2013 Maxim Poliakovski - * Copyright (c) 2009 Benjamin Larsson - * - * 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 - */ - -/** - * @file - * ATRAC common header - */ - -#ifndef AVCODEC_ATRAC_H -#define AVCODEC_ATRAC_H - -/** - * Gain control parameters for one subband. - */ -typedef struct AtracGainInfo { - int num_points; ///< number of gain control points - int lev_code[7]; ///< level at corresponding control point - int loc_code[7]; ///< location of gain control points -} AtracGainInfo; - -/** - * Gain compensation context structure. - */ -typedef struct AtracGCContext { - float gain_tab1[16]; ///< gain compensation level table - float gain_tab2[31]; ///< gain compensation interpolation table - int id2exp_offset; ///< offset for converting level index into level exponent - int loc_scale; ///< scale of location code = 2^loc_scale samples - int loc_size; ///< size of location code in samples -} AtracGCContext; - -extern float ff_atrac_sf_table[64]; - -/** - * Generate common tables. - */ -void ff_atrac_generate_tables(void); - -/** - * Initialize gain compensation context. - * - * @param gctx pointer to gain compensation context to initialize - * @param id2exp_offset offset for converting level index into level exponent - * @param loc_scale location size factor - */ -void ff_atrac_init_gain_compensation(AtracGCContext *gctx, int id2exp_offset, - int loc_scale); - -/** - * Apply gain compensation and perform the MDCT overlapping part. - * - * @param gctx pointer to gain compensation context - * @param in input buffer - * @param prev previous buffer to perform overlap against - * @param gc_now gain control information for current frame - * @param gc_next gain control information for next frame - * @param num_samples number of samples to process - * @param out output data goes here - */ -void ff_atrac_gain_compensation(AtracGCContext *gctx, float *in, float *prev, - AtracGainInfo *gc_now, AtracGainInfo *gc_next, - int num_samples, float *out); - -/** - * Quadrature mirror synthesis filter. - * - * @param inlo lower part of spectrum - * @param inhi higher part of spectrum - * @param nIn size of spectrum buffer - * @param pOut out buffer - * @param delayBuf delayBuf buffer - * @param temp temp buffer - */ -void ff_atrac_iqmf(float *inlo, float *inhi, unsigned int nIn, float *pOut, - float *delayBuf, float *temp); - -#endif /* AVCODEC_ATRAC_H */ |