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FFmpeg/libavcodec/aacenc.h

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  1. /*

  2.  * AAC encoder

  3.  * Copyright (C) 2008 Konstantin Shishkov

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * FFmpeg is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with FFmpeg; if not, write to the Free Software

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

  20.  */

  21. 

  22. #ifndef AVCODEC_AACENC_H

  23. #define AVCODEC_AACENC_H

  24. 

  25. #include "libavutil/float_dsp.h"

  26. #include "avcodec.h"

  27. #include "put_bits.h"

  28. 

  29. #include "aac.h"

  30. #include "audio_frame_queue.h"

  31. #include "psymodel.h"

  32. 

  33. #include "lpc.h"

  34. 

  35. typedef enum AACCoder {

  36.     AAC_CODER_ANMR = 0,

  37.     AAC_CODER_TWOLOOP,

  38.     AAC_CODER_FAST,

  39. 

  40.     AAC_CODER_NB,

  41. }AACCoder;

  42. 

  43. typedef struct AACEncOptions {

  44.     int coder;

  45.     int pns;

  46.     int tns;

  47.     int ltp;

  48.     int pce;

  49.     int pred;

  50.     int mid_side;

  51.     int intensity_stereo;

  52. } AACEncOptions;

  53. 

  54. struct AACEncContext;

  55. 

  56. typedef struct AACCoefficientsEncoder {

  57.     void (*search_for_quantizers)(AVCodecContext *avctx, struct AACEncContext *s,

  58.                                   SingleChannelElement *sce, const float lambda);

  59.     void (*encode_window_bands_info)(struct AACEncContext *s, SingleChannelElement *sce,

  60.                                      int win, int group_len, const float lambda);

  61.     void (*quantize_and_encode_band)(struct AACEncContext *s, PutBitContext *pb, const float *in, float *out, int size,

  62.                                      int scale_idx, int cb, const float lambda, int rtz);

  63.     void (*encode_tns_info)(struct AACEncContext *s, SingleChannelElement *sce);

  64.     void (*encode_ltp_info)(struct AACEncContext *s, SingleChannelElement *sce, int common_window);

  65.     void (*encode_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);

  66.     void (*adjust_common_pred)(struct AACEncContext *s, ChannelElement *cpe);

  67.     void (*adjust_common_ltp)(struct AACEncContext *s, ChannelElement *cpe);

  68.     void (*apply_main_pred)(struct AACEncContext *s, SingleChannelElement *sce);

  69.     void (*apply_tns_filt)(struct AACEncContext *s, SingleChannelElement *sce);

  70.     void (*update_ltp)(struct AACEncContext *s, SingleChannelElement *sce);

  71.     void (*ltp_insert_new_frame)(struct AACEncContext *s);

  72.     void (*set_special_band_scalefactors)(struct AACEncContext *s, SingleChannelElement *sce);

  73.     void (*search_for_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);

  74.     void (*mark_pns)(struct AACEncContext *s, AVCodecContext *avctx, SingleChannelElement *sce);

  75.     void (*search_for_tns)(struct AACEncContext *s, SingleChannelElement *sce);

  76.     void (*search_for_ltp)(struct AACEncContext *s, SingleChannelElement *sce, int common_window);

  77.     void (*search_for_ms)(struct AACEncContext *s, ChannelElement *cpe);

  78.     void (*search_for_is)(struct AACEncContext *s, AVCodecContext *avctx, ChannelElement *cpe);

  79.     void (*search_for_pred)(struct AACEncContext *s, SingleChannelElement *sce);

  80. } AACCoefficientsEncoder;

  81. 

  82. extern const AACCoefficientsEncoder ff_aac_coders[];

  83. 

  84. typedef struct AACQuantizeBandCostCacheEntry {

  85.     float rd;

  86.     float energy;

  87.     int bits;

  88.     char cb;

  89.     char rtz;

  90.     uint16_t generation;

  91. } AACQuantizeBandCostCacheEntry;

  92. 

  93. typedef struct AACPCEInfo {

  94.     int64_t layout;

  95.     int num_ele[4];                              ///< front, side, back, lfe

  96.     int pairing[3][8];                           ///< front, side, back

  97.     int index[4][8];                             ///< front, side, back, lfe

  98.     uint8_t config_map[16];                      ///< configs the encoder's channel specific settings

  99.     uint8_t reorder_map[16];                     ///< maps channels from lavc to aac order

  100. } AACPCEInfo;

  101. 

  102. /**

  103.  * List of PCE (Program Configuration Element) for the channel layouts listed

  104.  * in channel_layout.h

  105.  *

  106.  * For those wishing in the future to add other layouts:

  107.  *

  108.  * - num_ele: number of elements in each group of front, side, back, lfe channels

  109.  *            (an element is of type SCE (single channel), CPE (channel pair) for

  110.  *            the first 3 groups; and is LFE for LFE group).

  111.  *

  112.  * - pairing: 0 for an SCE element or 1 for a CPE; does not apply to LFE group

  113.  *

  114.  * - index: there are three independent indices for SCE, CPE and LFE;

  115.  *     they are incremented irrespective of the group to which the element belongs;

  116.  *     they are not reset when going from one group to another

  117.  *

  118.  *     Example: for 7.0 channel layout,

  119.  *        .pairing = { { 1, 0 }, { 1 }, { 1 }, }, (3 CPE and 1 SCE in front group)

  120.  *        .index = { { 0, 0 }, { 1 }, { 2 }, },

  121.  *               (index is 0 for the single SCE but goes from 0 to 2 for the CPEs)

  122.  *

  123.  *     The index order impacts the channel ordering. But is otherwise arbitrary

  124.  *     (the sequence could have been 2, 0, 1 instead of 0, 1, 2).

  125.  *

  126.  *     Spec allows for discontinuous indices, e.g. if one has a total of two SCE,

  127.  *     SCE.0 SCE.15 is OK per spec; BUT it won't be decoded by our AAC decoder

  128.  *     which at this time requires that indices fully cover some range starting

  129.  *     from 0 (SCE.1 SCE.0 is OK but not SCE.0 SCE.15).

  130.  *

  131.  * - config_map: total number of elements and their types. Beware, the way the

  132.  *               types are ordered impacts the final channel ordering.

  133.  *

  134.  * - reorder_map: reorders the channels.

  135.  *

  136.  */

  137. static const AACPCEInfo aac_pce_configs[] = {

  138.     {

  139.         .layout = AV_CH_LAYOUT_MONO,

  140.         .num_ele = { 1, 0, 0, 0 },

  141.         .pairing = { { 0 }, },

  142.         .index = { { 0 }, },

  143.         .config_map = { 1, TYPE_SCE, },

  144.         .reorder_map = { 0 },

  145.     },

  146.     {

  147.         .layout = AV_CH_LAYOUT_STEREO,

  148.         .num_ele = { 1, 0, 0, 0 },

  149.         .pairing = { { 1 }, },

  150.         .index = { { 0 }, },

  151.         .config_map = { 1, TYPE_CPE, },

  152.         .reorder_map = { 0, 1 },

  153.     },

  154.     {

  155.         .layout = AV_CH_LAYOUT_2POINT1,

  156.         .num_ele = { 1, 0, 0, 1 },

  157.         .pairing = { { 1 }, },

  158.         .index = { { 0 },{ 0 },{ 0 },{ 0 } },

  159.         .config_map = { 2, TYPE_CPE, TYPE_LFE },

  160.         .reorder_map = { 0, 1, 2 },

  161.     },

  162.     {

  163.         .layout = AV_CH_LAYOUT_2_1,

  164.         .num_ele = { 1, 0, 1, 0 },

  165.         .pairing = { { 1 },{ 0 },{ 0 } },

  166.         .index = { { 0 },{ 0 },{ 0 }, },

  167.         .config_map = { 2, TYPE_CPE, TYPE_SCE },

  168.         .reorder_map = { 0, 1, 2 },

  169.     },

  170.     {

  171.         .layout = AV_CH_LAYOUT_SURROUND,

  172.         .num_ele = { 2, 0, 0, 0 },

  173.         .pairing = { { 1, 0 }, },

  174.         .index = { { 0, 0 }, },

  175.         .config_map = { 2, TYPE_CPE, TYPE_SCE, },

  176.         .reorder_map = { 0, 1, 2 },

  177.     },

  178.     {

  179.         .layout = AV_CH_LAYOUT_3POINT1,

  180.         .num_ele = { 2, 0, 0, 1 },

  181.         .pairing = { { 1, 0 }, },

  182.         .index = { { 0, 0 }, { 0 }, { 0 }, { 0 }, },

  183.         .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_LFE },

  184.         .reorder_map = { 0, 1, 2, 3 },

  185.     },

  186.     {

  187.         .layout = AV_CH_LAYOUT_4POINT0,

  188.         .num_ele = { 2, 0, 1, 0 },

  189.         .pairing = { { 1, 0 }, { 0 }, { 0 }, },

  190.         .index = { { 0, 0 }, { 0 }, { 1 } },

  191.         .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_SCE },

  192.         .reorder_map = {  0, 1, 2, 3 },

  193.     },

  194.     {

  195.         .layout = AV_CH_LAYOUT_4POINT1,

  196.         .num_ele = { 2, 1, 1, 0 },

  197.         .pairing = { { 1, 0 }, { 0 }, { 0 }, },

  198.         .index = { { 0, 0 }, { 1 }, { 2 }, { 0 } },

  199.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_SCE },

  200.         .reorder_map = { 0, 1, 2, 3, 4 },

  201.     },

  202.     {

  203.         .layout = AV_CH_LAYOUT_2_2,

  204.         .num_ele = { 1, 1, 0, 0 },

  205.         .pairing = { { 1 }, { 1 }, },

  206.         .index = { { 0 }, { 1 }, },

  207.         .config_map = { 2, TYPE_CPE, TYPE_CPE },

  208.         .reorder_map = { 0, 1, 2, 3 },

  209.     },

  210.     {

  211.         .layout = AV_CH_LAYOUT_QUAD,

  212.         .num_ele = { 1, 0, 1, 0 },

  213.         .pairing = { { 1 }, { 0 }, { 1 }, },

  214.         .index = { { 0 }, { 0 }, { 1 } },

  215.         .config_map = { 2, TYPE_CPE, TYPE_CPE },

  216.         .reorder_map = { 0, 1, 2, 3 },

  217.     },

  218.     {

  219.         .layout = AV_CH_LAYOUT_5POINT0,

  220.         .num_ele = { 2, 1, 0, 0 },

  221.         .pairing = { { 1, 0 }, { 1 }, },

  222.         .index = { { 0, 0 }, { 1 } },

  223.         .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_CPE },

  224.         .reorder_map = { 0, 1, 2, 3, 4 },

  225.     },

  226.     {

  227.         .layout = AV_CH_LAYOUT_5POINT1,

  228.         .num_ele = { 2, 1, 1, 0 },

  229.         .pairing = { { 1, 0 }, { 0 }, { 1 }, },

  230.         .index = { { 0, 0 }, { 1 }, { 1 } },

  231.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE },

  232.         .reorder_map = { 0, 1, 2, 3, 4, 5 },

  233.     },

  234.     {

  235.         .layout = AV_CH_LAYOUT_5POINT0_BACK,

  236.         .num_ele = { 2, 0, 1, 0 },

  237.         .pairing = { { 1, 0 }, { 0 }, { 1 } },

  238.         .index = { { 0, 0 }, { 0 }, { 1 } },

  239.         .config_map = { 3, TYPE_CPE, TYPE_SCE, TYPE_CPE },

  240.         .reorder_map = { 0, 1, 2, 3, 4 },

  241.     },

  242.     {

  243.         .layout = AV_CH_LAYOUT_5POINT1_BACK,

  244.         .num_ele = { 2, 1, 1, 0 },

  245.         .pairing = { { 1, 0 }, { 0 }, { 1 }, },

  246.         .index = { { 0, 0 }, { 1 }, { 1 } },

  247.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE },

  248.         .reorder_map = { 0, 1, 2, 3, 4, 5 },

  249.     },

  250.     {

  251.         .layout = AV_CH_LAYOUT_6POINT0,

  252.         .num_ele = { 2, 1, 1, 0 },

  253.         .pairing = { { 1, 0 }, { 1 }, { 0 }, },

  254.         .index = { { 0, 0 }, { 1 }, { 1 } },

  255.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  256.         .reorder_map = { 0, 1, 2, 3, 4, 5 },

  257.     },

  258.     {

  259.         .layout = AV_CH_LAYOUT_6POINT0_FRONT,

  260.         .num_ele = { 2, 1, 0, 0 },

  261.         .pairing = { { 1, 1 }, { 1 } },

  262.         .index = { { 1, 0 }, { 2 }, },

  263.         .config_map = { 3, TYPE_CPE, TYPE_CPE, TYPE_CPE, },

  264.         .reorder_map = { 0, 1, 2, 3, 4, 5 },

  265.     },

  266.     {

  267.         .layout = AV_CH_LAYOUT_HEXAGONAL,

  268.         .num_ele = { 2, 0, 2, 0 },

  269.         .pairing = { { 1, 0 },{ 0 },{ 1, 0 }, },

  270.         .index = { { 0, 0 },{ 0 },{ 1, 1 } },

  271.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, },

  272.         .reorder_map = { 0, 1, 2, 3, 4, 5 },

  273.     },

  274.     {

  275.         .layout = AV_CH_LAYOUT_6POINT1,

  276.         .num_ele = { 2, 1, 2, 0 },

  277.         .pairing = { { 1, 0 },{ 0 },{ 1, 0 }, },

  278.         .index = { { 0, 0 },{ 1 },{ 1, 2 } },

  279.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  280.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },

  281.     },

  282.     {

  283.         .layout = AV_CH_LAYOUT_6POINT1_BACK,

  284.         .num_ele = { 2, 1, 2, 0 },

  285.         .pairing = { { 1, 0 }, { 0 }, { 1, 0 }, },

  286.         .index = { { 0, 0 }, { 1 }, { 1, 2 } },

  287.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  288.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },

  289.     },

  290.     {

  291.         .layout = AV_CH_LAYOUT_6POINT1_FRONT,

  292.         .num_ele = { 2, 1, 2, 0 },

  293.         .pairing = { { 1, 0 }, { 0 }, { 1, 0 }, },

  294.         .index = { { 0, 0 }, { 1 }, { 1, 2 } },

  295.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  296.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },

  297.     },

  298.     {

  299.         .layout = AV_CH_LAYOUT_7POINT0,

  300.         .num_ele = { 2, 1, 1, 0 },

  301.         .pairing = { { 1, 0 }, { 1 }, { 1 }, },

  302.         .index = { { 0, 0 }, { 1 }, { 2 }, },

  303.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE },

  304.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },

  305.     },

  306.     {

  307.         .layout = AV_CH_LAYOUT_7POINT0_FRONT,

  308.         .num_ele = { 2, 1, 1, 0 },

  309.         .pairing = { { 1, 0 }, { 1 }, { 1 }, },

  310.         .index = { { 0, 0 }, { 1 }, { 2 }, },

  311.         .config_map = { 4, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE },

  312.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6 },

  313.     },

  314.     {

  315.         .layout = AV_CH_LAYOUT_7POINT1,

  316.         .num_ele = { 2, 1, 2, 0 },

  317.         .pairing = { { 1, 0 }, { 0 }, { 1, 1 }, },

  318.         .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },

  319.         .config_map = { 5, TYPE_CPE, TYPE_SCE,  TYPE_SCE, TYPE_CPE, TYPE_CPE },

  320.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },

  321.     },

  322.     {

  323.         .layout = AV_CH_LAYOUT_7POINT1_WIDE,

  324.         .num_ele = { 2, 1, 2, 0 },

  325.         .pairing = { { 1, 0 }, { 0 },{  1, 1 }, },

  326.         .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },

  327.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_CPE },

  328.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },

  329.     },

  330.     {

  331.         .layout = AV_CH_LAYOUT_7POINT1_WIDE_BACK,

  332.         .num_ele = { 2, 1, 2, 0 },

  333.         .pairing = { { 1, 0 }, { 0 }, { 1, 1 }, },

  334.         .index = { { 0, 0 }, { 1 }, { 1, 2 }, { 0 } },

  335.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_SCE, TYPE_CPE, TYPE_CPE },

  336.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },

  337.     },

  338.     {

  339.         .layout = AV_CH_LAYOUT_OCTAGONAL,

  340.         .num_ele = { 2, 1, 2, 0 },

  341.         .pairing = { { 1, 0 }, { 1 }, { 1, 0 }, },

  342.         .index = { { 0, 0 }, { 1 }, { 2, 1 } },

  343.         .config_map = { 5, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_SCE },

  344.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7 },

  345.     },

  346.     {   /* Meant for order 2/mixed ambisonics */

  347.         .layout = AV_CH_LAYOUT_OCTAGONAL | AV_CH_TOP_CENTER,

  348.         .num_ele = { 2, 2, 2, 0 },

  349.         .pairing = { { 1, 0 }, { 1, 0 }, { 1, 0 }, },

  350.         .index = { { 0, 0 }, { 1, 1 }, { 2, 2 } },

  351.         .config_map = { 6, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  352.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8 },

  353.     },

  354.     {   /* Meant for order 2/mixed ambisonics */

  355.         .layout = AV_CH_LAYOUT_6POINT0_FRONT | AV_CH_BACK_CENTER |

  356.                   AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_TOP_CENTER,

  357.         .num_ele = { 2, 2, 2, 0 },

  358.         .pairing = { { 1, 1 }, { 1, 0 }, { 1, 0 }, },

  359.         .index = { { 0, 1 }, { 2, 0 }, { 3, 1 } },

  360.         .config_map = { 6, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  361.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 },

  362.     },

  363.     {

  364.         .layout = AV_CH_LAYOUT_HEXADECAGONAL,

  365.         .num_ele = { 4, 2, 4, 0 },

  366.         .pairing = { { 1, 0, 1, 0 }, { 1, 1 }, { 1, 0, 1, 0 }, },

  367.         .index = { { 0, 0, 1, 1 }, { 2, 3 }, { 4, 2, 5, 3 } },

  368.         .config_map = { 10, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_CPE, TYPE_CPE, TYPE_SCE, TYPE_CPE, TYPE_SCE },

  369.         .reorder_map = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },

  370.     },

  371. };

  372. 

  373. /**

  374.  * AAC encoder context

  375.  */

  376. typedef struct AACEncContext {

  377.     AVClass *av_class;

  378.     AACEncOptions options;                       ///< encoding options

  379.     PutBitContext pb;

  380.     FFTContext mdct1024;                         ///< long (1024 samples) frame transform context

  381.     FFTContext mdct128;                          ///< short (128 samples) frame transform context

  382.     AVFloatDSPContext *fdsp;

  383.     AACPCEInfo pce;                              ///< PCE data, if needed

  384.     float *planar_samples[16];                   ///< saved preprocessed input

  385. 

  386.     int profile;                                 ///< copied from avctx

  387.     int needs_pce;                               ///< flag for non-standard layout

  388.     LPCContext lpc;                              ///< used by TNS

  389.     int samplerate_index;                        ///< MPEG-4 samplerate index

  390.     int channels;                                ///< channel count

  391.     const uint8_t *reorder_map;                  ///< lavc to aac reorder map

  392.     const uint8_t *chan_map;                     ///< channel configuration map

  393. 

  394.     ChannelElement *cpe;                         ///< channel elements

  395.     FFPsyContext psy;

  396.     struct FFPsyPreprocessContext* psypp;

  397.     const AACCoefficientsEncoder *coder;

  398.     int cur_channel;                             ///< current channel for coder context

  399.     int random_state;

  400.     float lambda;

  401.     int last_frame_pb_count;                     ///< number of bits for the previous frame

  402.     float lambda_sum;                            ///< sum(lambda), for Qvg reporting

  403.     int lambda_count;                            ///< count(lambda), for Qvg reporting

  404.     enum RawDataBlockType cur_type;              ///< channel group type cur_channel belongs to

  405. 

  406.     AudioFrameQueue afq;

  407.     DECLARE_ALIGNED(16, int,   qcoefs)[96];      ///< quantized coefficients

  408.     DECLARE_ALIGNED(32, float, scoefs)[1024];    ///< scaled coefficients

  409. 

  410.     uint16_t quantize_band_cost_cache_generation;

  411.     AACQuantizeBandCostCacheEntry quantize_band_cost_cache[256][128]; ///< memoization area for quantize_band_cost

  412. 

  413.     void (*abs_pow34)(float *out, const float *in, const int size);

  414.     void (*quant_bands)(int *out, const float *in, const float *scaled,

  415.                         int size, int is_signed, int maxval, const float Q34,

  416.                         const float rounding);

  417. 

  418.     struct {

  419.         float *samples;

  420.     } buffer;

  421. } AACEncContext;

  422. 

  423. void ff_aac_dsp_init_x86(AACEncContext *s);

  424. void ff_aac_coder_init_mips(AACEncContext *c);

  425. void ff_quantize_band_cost_cache_init(struct AACEncContext *s);

  426. 

  427. 

  428. #endif /* AVCODEC_AACENC_H */