/*
  * Musepack decoder
  * Copyright (c) 2006 Konstantin Shishkov
  *
  * 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
  * Musepack decoder

  * MPEG Audio Layer 1/2 -like codec with frames of 1152 samples
  * divided into 32 subbands.
  */
 

 #ifndef AVCODEC_MPC_H
 #define AVCODEC_MPC_H

 #include "libavutil/lfg.h"

 #include "avcodec.h"

 #include "get_bits.h"

 #include "dsputil.h"
 #include "mpegaudio.h"

 #include "mpegaudiodsp.h"

 
 #define BANDS            32
 #define SAMPLES_PER_BAND 36
 #define MPC_FRAME_SIZE   (BANDS * SAMPLES_PER_BAND)
 
 /** Subband structure - hold all variables for each subband */

 typedef struct Band {

     int msf; ///< mid-stereo flag
     int res[2];
     int scfi[2];
     int scf_idx[2][3];
     int Q[2];
 }Band;
 

 typedef struct MPCContext {

     DSPContext dsp;

     MPADSPContext mpadsp;

     GetBitContext gb;
     int IS, MSS, gapless;
     int lastframelen;
     int maxbands, last_max_band;
     int last_bits_used;
     int oldDSCF[2][BANDS];
     Band bands[BANDS];
     int Q[2][MPC_FRAME_SIZE];
     int cur_frame, frames;
     uint8_t *bits;
     int buf_size;

     AVLFG rnd;

     int frames_to_skip;
     /* for synthesis */

     DECLARE_ALIGNED(16, MPA_INT, synth_buf)[MPA_MAX_CHANNELS][512*2];

     int synth_buf_offset[MPA_MAX_CHANNELS];

     DECLARE_ALIGNED(16, int32_t, sb_samples)[MPA_MAX_CHANNELS][36][SBLIMIT];

 } MPCContext;
 

 void ff_mpc_init(void);

 void ff_mpc_dequantize_and_synth(MPCContext *c, int maxband, int16_t **out, int channels);

 #endif /* AVCODEC_MPC_H */