@@ -119,8 +119,8 @@ OBJS-$(CONFIG_CLJR_ENCODER)            += cljr.o

 OBJS-$(CONFIG_COOK_DECODER)            += cook.o

 OBJS-$(CONFIG_CSCD_DECODER)            += cscd.o

 OBJS-$(CONFIG_CYUV_DECODER)            += cyuv.o

-OBJS-$(CONFIG_DCA_DECODER)             += dca.o synth_filter.o dcadsp.o \

-                                          dca_parser.o

+OBJS-$(CONFIG_DCA_DECODER)             += dcadec.o dcadsp.o            \

+                                          dca_parser.o synth_filter.o

 OBJS-$(CONFIG_DFA_DECODER)             += dfa.o

 OBJS-$(CONFIG_DNXHD_DECODER)           += dnxhddec.o dnxhddata.o

 OBJS-$(CONFIG_DNXHD_ENCODER)           += dnxhdenc.o dnxhddata.o       \

deleted file mode 100644

@@ -1,1971 +0,0 @@

-/*

- * DCA compatible decoder

- * Copyright (C) 2004 Gildas Bazin

- * Copyright (C) 2004 Benjamin Zores

- * Copyright (C) 2006 Benjamin Larsson

- * Copyright (C) 2007 Konstantin Shishkov

- *

- * This file is part of Libav.

- *

- * Libav 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,

- * 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

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- */

-

-#include <math.h>

-#include <stddef.h>

-#include <stdio.h>

-

-#include "libavutil/common.h"

-#include "libavutil/float_dsp.h"

-#include "libavutil/intmath.h"

-#include "libavutil/intreadwrite.h"

-#include "libavutil/mathematics.h"

-#include "libavutil/audioconvert.h"

-#include "avcodec.h"

-#include "dsputil.h"

-#include "fft.h"

-#include "get_bits.h"

-#include "put_bits.h"

-#include "dcadata.h"

-#include "dcahuff.h"

-#include "dca.h"

-#include "dca_parser.h"

-#include "synth_filter.h"

-#include "dcadsp.h"

-#include "fmtconvert.h"

-

-#if ARCH_ARM

-#   include "arm/dca.h"

-#endif

-

-//#define TRACE

-

-#define DCA_PRIM_CHANNELS_MAX  (7)

-#define DCA_SUBBANDS          (32)

-#define DCA_ABITS_MAX         (32)      /* Should be 28 */

-#define DCA_SUBSUBFRAMES_MAX   (4)

-#define DCA_SUBFRAMES_MAX     (16)

-#define DCA_BLOCKS_MAX        (16)

-#define DCA_LFE_MAX            (3)

-

-enum DCAMode {

-    DCA_MONO = 0,

-    DCA_CHANNEL,

-    DCA_STEREO,

-    DCA_STEREO_SUMDIFF,

-    DCA_STEREO_TOTAL,

-    DCA_3F,

-    DCA_2F1R,

-    DCA_3F1R,

-    DCA_2F2R,

-    DCA_3F2R,

-    DCA_4F2R

-};

-

-/* these are unconfirmed but should be mostly correct */

-enum DCAExSSSpeakerMask {

-    DCA_EXSS_FRONT_CENTER          = 0x0001,

-    DCA_EXSS_FRONT_LEFT_RIGHT      = 0x0002,

-    DCA_EXSS_SIDE_REAR_LEFT_RIGHT  = 0x0004,

-    DCA_EXSS_LFE                   = 0x0008,

-    DCA_EXSS_REAR_CENTER           = 0x0010,

-    DCA_EXSS_FRONT_HIGH_LEFT_RIGHT = 0x0020,

-    DCA_EXSS_REAR_LEFT_RIGHT       = 0x0040,

-    DCA_EXSS_FRONT_HIGH_CENTER     = 0x0080,

-    DCA_EXSS_OVERHEAD              = 0x0100,

-    DCA_EXSS_CENTER_LEFT_RIGHT     = 0x0200,

-    DCA_EXSS_WIDE_LEFT_RIGHT       = 0x0400,

-    DCA_EXSS_SIDE_LEFT_RIGHT       = 0x0800,

-    DCA_EXSS_LFE2                  = 0x1000,

-    DCA_EXSS_SIDE_HIGH_LEFT_RIGHT  = 0x2000,

-    DCA_EXSS_REAR_HIGH_CENTER      = 0x4000,

-    DCA_EXSS_REAR_HIGH_LEFT_RIGHT  = 0x8000,

-};

-

-enum DCAExtensionMask {

-    DCA_EXT_CORE       = 0x001, ///< core in core substream

-    DCA_EXT_XXCH       = 0x002, ///< XXCh channels extension in core substream

-    DCA_EXT_X96        = 0x004, ///< 96/24 extension in core substream

-    DCA_EXT_XCH        = 0x008, ///< XCh channel extension in core substream

-    DCA_EXT_EXSS_CORE  = 0x010, ///< core in ExSS (extension substream)

-    DCA_EXT_EXSS_XBR   = 0x020, ///< extended bitrate extension in ExSS

-    DCA_EXT_EXSS_XXCH  = 0x040, ///< XXCh channels extension in ExSS

-    DCA_EXT_EXSS_X96   = 0x080, ///< 96/24 extension in ExSS

-    DCA_EXT_EXSS_LBR   = 0x100, ///< low bitrate component in ExSS

-    DCA_EXT_EXSS_XLL   = 0x200, ///< lossless extension in ExSS

-};

-

-/* -1 are reserved or unknown */

-static const int dca_ext_audio_descr_mask[] = {

-    DCA_EXT_XCH,

-    -1,

-    DCA_EXT_X96,

-    DCA_EXT_XCH | DCA_EXT_X96,

-    -1,

-    -1,

-    DCA_EXT_XXCH,

-    -1,

-};

-

-/* extensions that reside in core substream */

-#define DCA_CORE_EXTS (DCA_EXT_XCH | DCA_EXT_XXCH | DCA_EXT_X96)

-

-/* Tables for mapping dts channel configurations to libavcodec multichannel api.

- * Some compromises have been made for special configurations. Most configurations

- * are never used so complete accuracy is not needed.

- *

- * L = left, R = right, C = center, S = surround, F = front, R = rear, T = total, OV = overhead.

- * S  -> side, when both rear and back are configured move one of them to the side channel

- * OV -> center back

- * All 2 channel configurations -> AV_CH_LAYOUT_STEREO

- */

-static const uint64_t dca_core_channel_layout[] = {

-    AV_CH_FRONT_CENTER,                                                     ///< 1, A

-    AV_CH_LAYOUT_STEREO,                                                    ///< 2, A + B (dual mono)

-    AV_CH_LAYOUT_STEREO,                                                    ///< 2, L + R (stereo)

-    AV_CH_LAYOUT_STEREO,                                                    ///< 2, (L + R) + (L - R) (sum-difference)

-    AV_CH_LAYOUT_STEREO,                                                    ///< 2, LT + RT (left and right total)

-    AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER,                               ///< 3, C + L + R

-    AV_CH_LAYOUT_STEREO | AV_CH_BACK_CENTER,                                ///< 3, L + R + S

-    AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_BACK_CENTER,           ///< 4, C + L + R + S

-    AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT,               ///< 4, L + R + SL + SR

-

-    AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER | AV_CH_SIDE_LEFT |

-    AV_CH_SIDE_RIGHT,                                                       ///< 5, C + L + R + SL + SR

-

-    AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT |

-    AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER,               ///< 6, CL + CR + L + R + SL + SR

-

-    AV_CH_LAYOUT_STEREO | AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT |

-    AV_CH_FRONT_CENTER  | AV_CH_BACK_CENTER,                                ///< 6, C + L + R + LR + RR + OV

-

-    AV_CH_FRONT_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER |

-    AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_BACK_CENTER   |

-    AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT,                                     ///< 6, CF + CR + LF + RF + LR + RR

-

-    AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER   |

-    AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO |

-    AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT,                                     ///< 7, CL + C + CR + L + R + SL + SR

-

-    AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_RIGHT_OF_CENTER |

-    AV_CH_LAYOUT_STEREO | AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT |

-    AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT,                                     ///< 8, CL + CR + L + R + SL1 + SL2 + SR1 + SR2

-

-    AV_CH_FRONT_LEFT_OF_CENTER | AV_CH_FRONT_CENTER   |

-    AV_CH_FRONT_RIGHT_OF_CENTER | AV_CH_LAYOUT_STEREO |

-    AV_CH_SIDE_LEFT | AV_CH_BACK_CENTER | AV_CH_SIDE_RIGHT,                 ///< 8, CL + C + CR + L + R + SL + S + SR

-};

-

-static const int8_t dca_lfe_index[] = {

-    1, 2, 2, 2, 2, 3, 2, 3, 2, 3, 2, 3, 1, 3, 2, 3

-};

-

-static const int8_t dca_channel_reorder_lfe[][9] = {

-    { 0, -1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  3, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  4, -1, -1, -1, -1, -1},

-    { 0,  1,  3,  4, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  4,  5, -1, -1, -1, -1},

-    { 3,  4,  0,  1,  5,  6, -1, -1, -1},

-    { 2,  0,  1,  4,  5,  6, -1, -1, -1},

-    { 0,  6,  4,  5,  2,  3, -1, -1, -1},

-    { 4,  2,  5,  0,  1,  6,  7, -1, -1},

-    { 5,  6,  0,  1,  7,  3,  8,  4, -1},

-    { 4,  2,  5,  0,  1,  6,  8,  7, -1},

-};

-

-static const int8_t dca_channel_reorder_lfe_xch[][9] = {

-    { 0,  2, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  3, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  3, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  3, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  3, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  4, -1, -1, -1, -1, -1},

-    { 0,  1,  3,  4, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  4,  5, -1, -1, -1, -1},

-    { 0,  1,  4,  5,  3, -1, -1, -1, -1},

-    { 2,  0,  1,  5,  6,  4, -1, -1, -1},

-    { 3,  4,  0,  1,  6,  7,  5, -1, -1},

-    { 2,  0,  1,  4,  5,  6,  7, -1, -1},

-    { 0,  6,  4,  5,  2,  3,  7, -1, -1},

-    { 4,  2,  5,  0,  1,  7,  8,  6, -1},

-    { 5,  6,  0,  1,  8,  3,  9,  4,  7},

-    { 4,  2,  5,  0,  1,  6,  9,  8,  7},

-};

-

-static const int8_t dca_channel_reorder_nolfe[][9] = {

-    { 0, -1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  2, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  3, -1, -1, -1, -1, -1},

-    { 0,  1,  2,  3, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  3,  4, -1, -1, -1, -1},

-    { 2,  3,  0,  1,  4,  5, -1, -1, -1},

-    { 2,  0,  1,  3,  4,  5, -1, -1, -1},

-    { 0,  5,  3,  4,  1,  2, -1, -1, -1},

-    { 3,  2,  4,  0,  1,  5,  6, -1, -1},

-    { 4,  5,  0,  1,  6,  2,  7,  3, -1},

-    { 3,  2,  4,  0,  1,  5,  7,  6, -1},

-};

-

-static const int8_t dca_channel_reorder_nolfe_xch[][9] = {

-    { 0,  1, -1, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  2, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  2, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  2, -1, -1, -1, -1, -1, -1},

-    { 0,  1,  2, -1, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  3, -1, -1, -1, -1, -1},

-    { 0,  1,  2,  3, -1, -1, -1, -1, -1},

-    { 2,  0,  1,  3,  4, -1, -1, -1, -1},

-    { 0,  1,  3,  4,  2, -1, -1, -1, -1},

-    { 2,  0,  1,  4,  5,  3, -1, -1, -1},

-    { 2,  3,  0,  1,  5,  6,  4, -1, -1},

-    { 2,  0,  1,  3,  4,  5,  6, -1, -1},

-    { 0,  5,  3,  4,  1,  2,  6, -1, -1},

-    { 3,  2,  4,  0,  1,  6,  7,  5, -1},

-    { 4,  5,  0,  1,  7,  2,  8,  3,  6},

-    { 3,  2,  4,  0,  1,  5,  8,  7,  6},

-};

-

-#define DCA_DOLBY                  101           /* FIXME */

-

-#define DCA_CHANNEL_BITS             6

-#define DCA_CHANNEL_MASK          0x3F

-

-#define DCA_LFE                   0x80

-

-#define HEADER_SIZE                 14

-

-#define DCA_MAX_FRAME_SIZE       16384

-#define DCA_MAX_EXSS_HEADER_SIZE  4096

-

-#define DCA_BUFFER_PADDING_SIZE   1024

-

-/** Bit allocation */

-typedef struct {

-    int offset;                 ///< code values offset

-    int maxbits[8];             ///< max bits in VLC

-    int wrap;                   ///< wrap for get_vlc2()

-    VLC vlc[8];                 ///< actual codes

-} BitAlloc;

-

-static BitAlloc dca_bitalloc_index;    ///< indexes for samples VLC select

-static BitAlloc dca_tmode;             ///< transition mode VLCs

-static BitAlloc dca_scalefactor;       ///< scalefactor VLCs

-static BitAlloc dca_smpl_bitalloc[11]; ///< samples VLCs

-

-static av_always_inline int get_bitalloc(GetBitContext *gb, BitAlloc *ba,

-                                         int idx)

-{

-    return get_vlc2(gb, ba->vlc[idx].table, ba->vlc[idx].bits, ba->wrap) +

-           ba->offset;

-}

-

-typedef struct {

-    AVCodecContext *avctx;

-    AVFrame frame;

-    /* Frame header */

-    int frame_type;             ///< type of the current frame

-    int samples_deficit;        ///< deficit sample count

-    int crc_present;            ///< crc is present in the bitstream

-    int sample_blocks;          ///< number of PCM sample blocks

-    int frame_size;             ///< primary frame byte size

-    int amode;                  ///< audio channels arrangement

-    int sample_rate;            ///< audio sampling rate

-    int bit_rate;               ///< transmission bit rate

-    int bit_rate_index;         ///< transmission bit rate index

-

-    int downmix;                ///< embedded downmix enabled

-    int dynrange;               ///< embedded dynamic range flag

-    int timestamp;              ///< embedded time stamp flag

-    int aux_data;               ///< auxiliary data flag

-    int hdcd;                   ///< source material is mastered in HDCD

-    int ext_descr;              ///< extension audio descriptor flag

-    int ext_coding;             ///< extended coding flag

-    int aspf;                   ///< audio sync word insertion flag

-    int lfe;                    ///< low frequency effects flag

-    int predictor_history;      ///< predictor history flag

-    int header_crc;             ///< header crc check bytes

-    int multirate_inter;        ///< multirate interpolator switch

-    int version;                ///< encoder software revision

-    int copy_history;           ///< copy history

-    int source_pcm_res;         ///< source pcm resolution

-    int front_sum;              ///< front sum/difference flag

-    int surround_sum;           ///< surround sum/difference flag

-    int dialog_norm;            ///< dialog normalisation parameter

-

-    /* Primary audio coding header */

-    int subframes;              ///< number of subframes

-    int is_channels_set;        ///< check for if the channel number is already set

-    int total_channels;         ///< number of channels including extensions

-    int prim_channels;          ///< number of primary audio channels

-    int subband_activity[DCA_PRIM_CHANNELS_MAX];    ///< subband activity count

-    int vq_start_subband[DCA_PRIM_CHANNELS_MAX];    ///< high frequency vq start subband

-    int joint_intensity[DCA_PRIM_CHANNELS_MAX];     ///< joint intensity coding index

-    int transient_huffman[DCA_PRIM_CHANNELS_MAX];   ///< transient mode code book

-    int scalefactor_huffman[DCA_PRIM_CHANNELS_MAX]; ///< scale factor code book

-    int bitalloc_huffman[DCA_PRIM_CHANNELS_MAX];    ///< bit allocation quantizer select

-    int quant_index_huffman[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX]; ///< quantization index codebook select

-    float scalefactor_adj[DCA_PRIM_CHANNELS_MAX][DCA_ABITS_MAX];   ///< scale factor adjustment

-

-    /* Primary audio coding side information */

-    int subsubframes[DCA_SUBFRAMES_MAX];                         ///< number of subsubframes

-    int partial_samples[DCA_SUBFRAMES_MAX];                      ///< partial subsubframe samples count

-    int prediction_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS];    ///< prediction mode (ADPCM used or not)

-    int prediction_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS];      ///< prediction VQ coefs

-    int bitalloc[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS];           ///< bit allocation index

-    int transition_mode[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS];    ///< transition mode (transients)

-    int scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][2];    ///< scale factors (2 if transient)

-    int joint_huff[DCA_PRIM_CHANNELS_MAX];                       ///< joint subband scale factors codebook

-    int joint_scale_factor[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS]; ///< joint subband scale factors

-    int downmix_coef[DCA_PRIM_CHANNELS_MAX][2];                  ///< stereo downmix coefficients

-    int dynrange_coef;                                           ///< dynamic range coefficient

-

-    int high_freq_vq[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS];       ///< VQ encoded high frequency subbands

-

-    float lfe_data[2 * DCA_LFE_MAX * (DCA_BLOCKS_MAX + 4)];      ///< Low frequency effect data

-    int lfe_scale_factor;

-

-    /* Subband samples history (for ADPCM) */

-    DECLARE_ALIGNED(16, float, subband_samples_hist)[DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][4];

-    DECLARE_ALIGNED(32, float, subband_fir_hist)[DCA_PRIM_CHANNELS_MAX][512];

-    DECLARE_ALIGNED(32, float, subband_fir_noidea)[DCA_PRIM_CHANNELS_MAX][32];

-    int hist_index[DCA_PRIM_CHANNELS_MAX];

-    DECLARE_ALIGNED(32, float, raXin)[32];

-

-    int output;                 ///< type of output

-    float scale_bias;           ///< output scale

-

-    DECLARE_ALIGNED(32, float, subband_samples)[DCA_BLOCKS_MAX][DCA_PRIM_CHANNELS_MAX][DCA_SUBBANDS][8];

-    DECLARE_ALIGNED(32, float, samples)[(DCA_PRIM_CHANNELS_MAX + 1) * 256];

-    const float *samples_chanptr[DCA_PRIM_CHANNELS_MAX + 1];

-

-    uint8_t dca_buffer[DCA_MAX_FRAME_SIZE + DCA_MAX_EXSS_HEADER_SIZE + DCA_BUFFER_PADDING_SIZE];

-    int dca_buffer_size;        ///< how much data is in the dca_buffer

-

-    const int8_t *channel_order_tab;  ///< channel reordering table, lfe and non lfe

-    GetBitContext gb;

-    /* Current position in DCA frame */

-    int current_subframe;

-    int current_subsubframe;

-

-    int core_ext_mask;          ///< present extensions in the core substream

-

-    /* XCh extension information */

-    int xch_present;            ///< XCh extension present and valid

-    int xch_base_channel;       ///< index of first (only) channel containing XCH data

-

-    /* ExSS header parser */

-    int static_fields;          ///< static fields present

-    int mix_metadata;           ///< mixing metadata present

-    int num_mix_configs;        ///< number of mix out configurations

-    int mix_config_num_ch[4];   ///< number of channels in each mix out configuration

-

-    int profile;

-

-    int debug_flag;             ///< used for suppressing repeated error messages output

-    AVFloatDSPContext fdsp;

-    FFTContext imdct;

-    SynthFilterContext synth;

-    DCADSPContext dcadsp;

-    FmtConvertContext fmt_conv;

-} DCAContext;

-

-static const uint16_t dca_vlc_offs[] = {

-        0,   512,   640,   768,  1282,  1794,  2436,  3080,  3770,  4454,  5364,

-     5372,  5380,  5388,  5392,  5396,  5412,  5420,  5428,  5460,  5492,  5508,

-     5572,  5604,  5668,  5796,  5860,  5892,  6412,  6668,  6796,  7308,  7564,

-     7820,  8076,  8620,  9132,  9388,  9910, 10166, 10680, 11196, 11726, 12240,

-    12752, 13298, 13810, 14326, 14840, 15500, 16022, 16540, 17158, 17678, 18264,

-    18796, 19352, 19926, 20468, 21472, 22398, 23014, 23622,

-};

-

-static av_cold void dca_init_vlcs(void)

-{

-    static int vlcs_initialized = 0;

-    int i, j, c = 14;

-    static VLC_TYPE dca_table[23622][2];

-

-    if (vlcs_initialized)

-        return;

-

-    dca_bitalloc_index.offset = 1;

-    dca_bitalloc_index.wrap = 2;

-    for (i = 0; i < 5; i++) {

-        dca_bitalloc_index.vlc[i].table = &dca_table[dca_vlc_offs[i]];

-        dca_bitalloc_index.vlc[i].table_allocated = dca_vlc_offs[i + 1] - dca_vlc_offs[i];

-        init_vlc(&dca_bitalloc_index.vlc[i], bitalloc_12_vlc_bits[i], 12,

-                 bitalloc_12_bits[i], 1, 1,

-                 bitalloc_12_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

-    }

-    dca_scalefactor.offset = -64;

-    dca_scalefactor.wrap = 2;

-    for (i = 0; i < 5; i++) {

-        dca_scalefactor.vlc[i].table = &dca_table[dca_vlc_offs[i + 5]];

-        dca_scalefactor.vlc[i].table_allocated = dca_vlc_offs[i + 6] - dca_vlc_offs[i + 5];

-        init_vlc(&dca_scalefactor.vlc[i], SCALES_VLC_BITS, 129,

-                 scales_bits[i], 1, 1,

-                 scales_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

-    }

-    dca_tmode.offset = 0;

-    dca_tmode.wrap = 1;

-    for (i = 0; i < 4; i++) {

-        dca_tmode.vlc[i].table = &dca_table[dca_vlc_offs[i + 10]];

-        dca_tmode.vlc[i].table_allocated = dca_vlc_offs[i + 11] - dca_vlc_offs[i + 10];

-        init_vlc(&dca_tmode.vlc[i], tmode_vlc_bits[i], 4,

-                 tmode_bits[i], 1, 1,

-                 tmode_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC);

-    }

-

-    for (i = 0; i < 10; i++)

-        for (j = 0; j < 7; j++) {

-            if (!bitalloc_codes[i][j])

-                break;

-            dca_smpl_bitalloc[i + 1].offset                 = bitalloc_offsets[i];

-            dca_smpl_bitalloc[i + 1].wrap                   = 1 + (j > 4);

-            dca_smpl_bitalloc[i + 1].vlc[j].table           = &dca_table[dca_vlc_offs[c]];

-            dca_smpl_bitalloc[i + 1].vlc[j].table_allocated = dca_vlc_offs[c + 1] - dca_vlc_offs[c];

-

-            init_vlc(&dca_smpl_bitalloc[i + 1].vlc[j], bitalloc_maxbits[i][j],

-                     bitalloc_sizes[i],

-                     bitalloc_bits[i][j], 1, 1,

-                     bitalloc_codes[i][j], 2, 2, INIT_VLC_USE_NEW_STATIC);

-            c++;

-        }

-    vlcs_initialized = 1;

-}

-

-static inline void get_array(GetBitContext *gb, int *dst, int len, int bits)

-{

-    while (len--)

-        *dst++ = get_bits(gb, bits);

-}

-

-static int dca_parse_audio_coding_header(DCAContext *s, int base_channel)

-{

-    int i, j;

-    static const float adj_table[4] = { 1.0, 1.1250, 1.2500, 1.4375 };

-    static const int bitlen[11] = { 0, 1, 2, 2, 2, 2, 3, 3, 3, 3, 3 };

-    static const int thr[11]    = { 0, 1, 3, 3, 3, 3, 7, 7, 7, 7, 7 };

-

-    s->total_channels = get_bits(&s->gb, 3) + 1 + base_channel;

-    s->prim_channels  = s->total_channels;

-

-    if (s->prim_channels > DCA_PRIM_CHANNELS_MAX)

-        s->prim_channels = DCA_PRIM_CHANNELS_MAX;

-

-

-    for (i = base_channel; i < s->prim_channels; i++) {

-        s->subband_activity[i] = get_bits(&s->gb, 5) + 2;

-        if (s->subband_activity[i] > DCA_SUBBANDS)

-            s->subband_activity[i] = DCA_SUBBANDS;

-    }

-    for (i = base_channel; i < s->prim_channels; i++) {

-        s->vq_start_subband[i] = get_bits(&s->gb, 5) + 1;

-        if (s->vq_start_subband[i] > DCA_SUBBANDS)

-            s->vq_start_subband[i] = DCA_SUBBANDS;

-    }

-    get_array(&s->gb, s->joint_intensity + base_channel,     s->prim_channels - base_channel, 3);

-    get_array(&s->gb, s->transient_huffman + base_channel,   s->prim_channels - base_channel, 2);

-    get_array(&s->gb, s->scalefactor_huffman + base_channel, s->prim_channels - base_channel, 3);

-    get_array(&s->gb, s->bitalloc_huffman + base_channel,    s->prim_channels - base_channel, 3);

-

-    /* Get codebooks quantization indexes */

-    if (!base_channel)

-        memset(s->quant_index_huffman, 0, sizeof(s->quant_index_huffman));

-    for (j = 1; j < 11; j++)

-        for (i = base_channel; i < s->prim_channels; i++)

-            s->quant_index_huffman[i][j] = get_bits(&s->gb, bitlen[j]);

-

-    /* Get scale factor adjustment */

-    for (j = 0; j < 11; j++)

-        for (i = base_channel; i < s->prim_channels; i++)

-            s->scalefactor_adj[i][j] = 1;

-

-    for (j = 1; j < 11; j++)

-        for (i = base_channel; i < s->prim_channels; i++)

-            if (s->quant_index_huffman[i][j] < thr[j])

-                s->scalefactor_adj[i][j] = adj_table[get_bits(&s->gb, 2)];

-

-    if (s->crc_present) {

-        /* Audio header CRC check */

-        get_bits(&s->gb, 16);

-    }

-

-    s->current_subframe    = 0;

-    s->current_subsubframe = 0;

-

-#ifdef TRACE

-    av_log(s->avctx, AV_LOG_DEBUG, "subframes: %i\n", s->subframes);

-    av_log(s->avctx, AV_LOG_DEBUG, "prim channels: %i\n", s->prim_channels);

-    for (i = base_channel; i < s->prim_channels; i++) {

-        av_log(s->avctx, AV_LOG_DEBUG, "subband activity: %i\n",

-               s->subband_activity[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "vq start subband: %i\n",

-               s->vq_start_subband[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "joint intensity: %i\n",

-               s->joint_intensity[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "transient mode codebook: %i\n",

-               s->transient_huffman[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "scale factor codebook: %i\n",

-               s->scalefactor_huffman[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "bit allocation quantizer: %i\n",

-               s->bitalloc_huffman[i]);

-        av_log(s->avctx, AV_LOG_DEBUG, "quant index huff:");

-        for (j = 0; j < 11; j++)

-            av_log(s->avctx, AV_LOG_DEBUG, " %i", s->quant_index_huffman[i][j]);

-        av_log(s->avctx, AV_LOG_DEBUG, "\n");

-        av_log(s->avctx, AV_LOG_DEBUG, "scalefac adj:");

-        for (j = 0; j < 11; j++)

-            av_log(s->avctx, AV_LOG_DEBUG, " %1.3f", s->scalefactor_adj[i][j]);

-        av_log(s->avctx, AV_LOG_DEBUG, "\n");

-    }

-#endif

-

-    return 0;

-}

-

-static int dca_parse_frame_header(DCAContext *s)

-{

-    init_get_bits(&s->gb, s->dca_buffer, s->dca_buffer_size * 8);

-

-    /* Sync code */

-    skip_bits_long(&s->gb, 32);

-

-    /* Frame header */

-    s->frame_type        = get_bits(&s->gb, 1);

-    s->samples_deficit   = get_bits(&s->gb, 5) + 1;

-    s->crc_present       = get_bits(&s->gb, 1);

-    s->sample_blocks     = get_bits(&s->gb, 7) + 1;

-    s->frame_size        = get_bits(&s->gb, 14) + 1;

-    if (s->frame_size < 95)

-        return AVERROR_INVALIDDATA;

-    s->amode             = get_bits(&s->gb, 6);

-    s->sample_rate       = dca_sample_rates[get_bits(&s->gb, 4)];

-    if (!s->sample_rate)

-        return AVERROR_INVALIDDATA;

-    s->bit_rate_index    = get_bits(&s->gb, 5);

-    s->bit_rate          = dca_bit_rates[s->bit_rate_index];

-    if (!s->bit_rate)

-        return AVERROR_INVALIDDATA;

-

-    s->downmix           = get_bits(&s->gb, 1);

-    s->dynrange          = get_bits(&s->gb, 1);

-    s->timestamp         = get_bits(&s->gb, 1);

-    s->aux_data          = get_bits(&s->gb, 1);

-    s->hdcd              = get_bits(&s->gb, 1);

-    s->ext_descr         = get_bits(&s->gb, 3);

-    s->ext_coding        = get_bits(&s->gb, 1);

-    s->aspf              = get_bits(&s->gb, 1);

-    s->lfe               = get_bits(&s->gb, 2);

-    s->predictor_history = get_bits(&s->gb, 1);

-

-    /* TODO: check CRC */

-    if (s->crc_present)

-        s->header_crc    = get_bits(&s->gb, 16);

-

-    s->multirate_inter   = get_bits(&s->gb, 1);

-    s->version           = get_bits(&s->gb, 4);

-    s->copy_history      = get_bits(&s->gb, 2);

-    s->source_pcm_res    = get_bits(&s->gb, 3);

-    s->front_sum         = get_bits(&s->gb, 1);

-    s->surround_sum      = get_bits(&s->gb, 1);

-    s->dialog_norm       = get_bits(&s->gb, 4);

-

-    /* FIXME: channels mixing levels */

-    s->output = s->amode;

-    if (s->lfe)

-        s->output |= DCA_LFE;

-

-#ifdef TRACE

-    av_log(s->avctx, AV_LOG_DEBUG, "frame type: %i\n", s->frame_type);

-    av_log(s->avctx, AV_LOG_DEBUG, "samples deficit: %i\n", s->samples_deficit);

-    av_log(s->avctx, AV_LOG_DEBUG, "crc present: %i\n", s->crc_present);

-    av_log(s->avctx, AV_LOG_DEBUG, "sample blocks: %i (%i samples)\n",

-           s->sample_blocks, s->sample_blocks * 32);

-    av_log(s->avctx, AV_LOG_DEBUG, "frame size: %i bytes\n", s->frame_size);

-    av_log(s->avctx, AV_LOG_DEBUG, "amode: %i (%i channels)\n",

-           s->amode, dca_channels[s->amode]);

-    av_log(s->avctx, AV_LOG_DEBUG, "sample rate: %i Hz\n",

-           s->sample_rate);

-    av_log(s->avctx, AV_LOG_DEBUG, "bit rate: %i bits/s\n",

-           s->bit_rate);

-    av_log(s->avctx, AV_LOG_DEBUG, "downmix: %i\n", s->downmix);

-    av_log(s->avctx, AV_LOG_DEBUG, "dynrange: %i\n", s->dynrange);

-    av_log(s->avctx, AV_LOG_DEBUG, "timestamp: %i\n", s->timestamp);

-    av_log(s->avctx, AV_LOG_DEBUG, "aux_data: %i\n", s->aux_data);

-    av_log(s->avctx, AV_LOG_DEBUG, "hdcd: %i\n", s->hdcd);

-    av_log(s->avctx, AV_LOG_DEBUG, "ext descr: %i\n", s->ext_descr);

-    av_log(s->avctx, AV_LOG_DEBUG, "ext coding: %i\n", s->ext_coding);

-    av_log(s->avctx, AV_LOG_DEBUG, "aspf: %i\n", s->aspf);

-    av_log(s->avctx, AV_LOG_DEBUG, "lfe: %i\n", s->lfe);

-    av_log(s->avctx, AV_LOG_DEBUG, "predictor history: %i\n",

-           s->predictor_history);

-    av_log(s->avctx, AV_LOG_DEBUG, "header crc: %i\n", s->header_crc);

-    av_log(s->avctx, AV_LOG_DEBUG, "multirate inter: %i\n",

-           s->multirate_inter);

-    av_log(s->avctx, AV_LOG_DEBUG, "version number: %i\n", s->version);

-    av_log(s->avctx, AV_LOG_DEBUG, "copy history: %i\n", s->copy_history);

-    av_log(s->avctx, AV_LOG_DEBUG,

-           "source pcm resolution: %i (%i bits/sample)\n",

-           s->source_pcm_res, dca_bits_per_sample[s->source_pcm_res]);

-    av_log(s->avctx, AV_LOG_DEBUG, "front sum: %i\n", s->front_sum);

-    av_log(s->avctx, AV_LOG_DEBUG, "surround sum: %i\n", s->surround_sum);

-    av_log(s->avctx, AV_LOG_DEBUG, "dialog norm: %i\n", s->dialog_norm);

-    av_log(s->avctx, AV_LOG_DEBUG, "\n");

-#endif

-

-    /* Primary audio coding header */

-    s->subframes         = get_bits(&s->gb, 4) + 1;

-

-    return dca_parse_audio_coding_header(s, 0);

-}

-

-

-static inline int get_scale(GetBitContext *gb, int level, int value, int log2range)

-{

-    if (level < 5) {

-        /* huffman encoded */

-        value += get_bitalloc(gb, &dca_scalefactor, level);

-        value = av_clip(value, 0, (1 << log2range) - 1);

-    } else if (level < 8) {

-        if (level + 1 > log2range) {

-            skip_bits(gb, level + 1 - log2range);

-            value = get_bits(gb, log2range);

-        } else {

-            value = get_bits(gb, level + 1);

-        }

-    }

-    return value;

-}

-

-static int dca_subframe_header(DCAContext *s, int base_channel, int block_index)

-{

-    /* Primary audio coding side information */

-    int j, k;

-

-    if (get_bits_left(&s->gb) < 0)

-        return AVERROR_INVALIDDATA;

-

-    if (!base_channel) {

-        s->subsubframes[s->current_subframe]    = get_bits(&s->gb, 2) + 1;

-        s->partial_samples[s->current_subframe] = get_bits(&s->gb, 3);

-    }

-

-    for (j = base_channel; j < s->prim_channels; j++) {

-        for (k = 0; k < s->subband_activity[j]; k++)

-            s->prediction_mode[j][k] = get_bits(&s->gb, 1);

-    }

-

-    /* Get prediction codebook */

-    for (j = base_channel; j < s->prim_channels; j++) {

-        for (k = 0; k < s->subband_activity[j]; k++) {

-            if (s->prediction_mode[j][k] > 0) {

-                /* (Prediction coefficient VQ address) */

-                s->prediction_vq[j][k] = get_bits(&s->gb, 12);

-            }

-        }

-    }

-

-    /* Bit allocation index */

-    for (j = base_channel; j < s->prim_channels; j++) {

-        for (k = 0; k < s->vq_start_subband[j]; k++) {

-            if (s->bitalloc_huffman[j] == 6)

-                s->bitalloc[j][k] = get_bits(&s->gb, 5);

-            else if (s->bitalloc_huffman[j] == 5)

-                s->bitalloc[j][k] = get_bits(&s->gb, 4);

-            else if (s->bitalloc_huffman[j] == 7) {

-                av_log(s->avctx, AV_LOG_ERROR,

-                       "Invalid bit allocation index\n");

-                return AVERROR_INVALIDDATA;

-            } else {

-                s->bitalloc[j][k] =

-                    get_bitalloc(&s->gb, &dca_bitalloc_index, s->bitalloc_huffman[j]);

-            }

-

-            if (s->bitalloc[j][k] > 26) {

-                // av_log(s->avctx, AV_LOG_DEBUG, "bitalloc index [%i][%i] too big (%i)\n",

-                //        j, k, s->bitalloc[j][k]);

-                return AVERROR_INVALIDDATA;

-            }

-        }

-    }

-

-    /* Transition mode */

-    for (j = base_channel; j < s->prim_channels; j++) {

-        for (k = 0; k < s->subband_activity[j]; k++) {

-            s->transition_mode[j][k] = 0;

-            if (s->subsubframes[s->current_subframe] > 1 &&

-                k < s->vq_start_subband[j] && s->bitalloc[j][k] > 0) {

-                s->transition_mode[j][k] =

-                    get_bitalloc(&s->gb, &dca_tmode, s->transient_huffman[j]);

-            }

-        }

-    }

-

-    if (get_bits_left(&s->gb) < 0)

-        return AVERROR_INVALIDDATA;

-

-    for (j = base_channel; j < s->prim_channels; j++) {

-        const uint32_t *scale_table;

-        int scale_sum, log_size;

-

-        memset(s->scale_factor[j], 0,

-               s->subband_activity[j] * sizeof(s->scale_factor[0][0][0]) * 2);

-

-        if (s->scalefactor_huffman[j] == 6) {

-            scale_table = scale_factor_quant7;

-            log_size = 7;

-        } else {

-            scale_table = scale_factor_quant6;

-            log_size = 6;

-        }

-

-        /* When huffman coded, only the difference is encoded */

-        scale_sum = 0;

-

-        for (k = 0; k < s->subband_activity[j]; k++) {

-            if (k >= s->vq_start_subband[j] || s->bitalloc[j][k] > 0) {

-                scale_sum = get_scale(&s->gb, s->scalefactor_huffman[j], scale_sum, log_size);

-                s->scale_factor[j][k][0] = scale_table[scale_sum];

-            }

-

-            if (k < s->vq_start_subband[j] && s->transition_mode[j][k]) {

-                /* Get second scale factor */

-                scale_sum = get_scale(&s->gb, s->scalefactor_huffman[j], scale_sum, log_size);

-                s->scale_factor[j][k][1] = scale_table[scale_sum];

-            }

-        }

-    }

-

-    /* Joint subband scale factor codebook select */

-    for (j = base_channel; j < s->prim_channels; j++) {

-        /* Transmitted only if joint subband coding enabled */

-        if (s->joint_intensity[j] > 0)

-            s->joint_huff[j] = get_bits(&s->gb, 3);

-    }

-

-    if (get_bits_left(&s->gb) < 0)

-        return AVERROR_INVALIDDATA;

-

-    /* Scale factors for joint subband coding */

-    for (j = base_channel; j < s->prim_channels; j++) {

-        int source_channel;

-

-        /* Transmitted only if joint subband coding enabled */

-        if (s->joint_intensity[j] > 0) {

-            int scale = 0;

-            source_channel = s->joint_intensity[j] - 1;

-

-            /* When huffman coded, only the difference is encoded

-             * (is this valid as well for joint scales ???) */

-

-            for (k = s->subband_activity[j]; k < s->subband_activity[source_channel]; k++) {

-                scale = get_scale(&s->gb, s->joint_huff[j], 64 /* bias */, 7);

-                s->joint_scale_factor[j][k] = scale;    /*joint_scale_table[scale]; */

-            }

-

-            if (!(s->debug_flag & 0x02)) {

-                av_log(s->avctx, AV_LOG_DEBUG,

-                       "Joint stereo coding not supported\n");

-                s->debug_flag |= 0x02;

-            }

-        }

-    }

-

-    /* Stereo downmix coefficients */

-    if (!base_channel && s->prim_channels > 2) {

-        if (s->downmix) {

-            for (j = base_channel; j < s->prim_channels; j++) {

-                s->downmix_coef[j][0] = get_bits(&s->gb, 7);

-                s->downmix_coef[j][1] = get_bits(&s->gb, 7);

-            }

-        } else {

-            int am = s->amode & DCA_CHANNEL_MASK;

-            if (am >= FF_ARRAY_ELEMS(dca_default_coeffs)) {

-                av_log(s->avctx, AV_LOG_ERROR,

-                       "Invalid channel mode %d\n", am);

-                return AVERROR_INVALIDDATA;

-            }

-            for (j = base_channel; j < s->prim_channels; j++) {

-                s->downmix_coef[j][0] = dca_default_coeffs[am][j][0];

-                s->downmix_coef[j][1] = dca_default_coeffs[am][j][1];

-            }

-        }

-    }

-

-    /* Dynamic range coefficient */

-    if (!base_channel && s->dynrange)

-        s->dynrange_coef = get_bits(&s->gb, 8);

-

-    /* Side information CRC check word */

-    if (s->crc_present) {

-        get_bits(&s->gb, 16);

-    }

-

-    /*

-     * Primary audio data arrays

-     */

-

-    /* VQ encoded high frequency subbands */

-    for (j = base_channel; j < s->prim_channels; j++)

-        for (k = s->vq_start_subband[j]; k < s->subband_activity[j]; k++)

-            /* 1 vector -> 32 samples */

-            s->high_freq_vq[j][k] = get_bits(&s->gb, 10);

-

-    /* Low frequency effect data */

-    if (!base_channel && s->lfe) {

-        /* LFE samples */

-        int lfe_samples = 2 * s->lfe * (4 + block_index);

-        int lfe_end_sample = 2 * s->lfe * (4 + block_index + s->subsubframes[s->current_subframe]);

-        float lfe_scale;

-

-        for (j = lfe_samples; j < lfe_end_sample; j++) {

-            /* Signed 8 bits int */

-            s->lfe_data[j] = get_sbits(&s->gb, 8);

-        }

-

-        /* Scale factor index */

-        skip_bits(&s->gb, 1);

-        s->lfe_scale_factor = scale_factor_quant7[get_bits(&s->gb, 7)];

-

-        /* Quantization step size * scale factor */

-        lfe_scale = 0.035 * s->lfe_scale_factor;

-

-        for (j = lfe_samples; j < lfe_end_sample; j++)

-            s->lfe_data[j] *= lfe_scale;

-    }

-

-#ifdef TRACE

-    av_log(s->avctx, AV_LOG_DEBUG, "subsubframes: %i\n",

-           s->subsubframes[s->current_subframe]);

-    av_log(s->avctx, AV_LOG_DEBUG, "partial samples: %i\n",

-           s->partial_samples[s->current_subframe]);

-

-    for (j = base_channel; j < s->prim_channels; j++) {

-        av_log(s->avctx, AV_LOG_DEBUG, "prediction mode:");

-        for (k = 0; k < s->subband_activity[j]; k++)

-            av_log(s->avctx, AV_LOG_DEBUG, " %i", s->prediction_mode[j][k]);