1 /****************************************************************************** 2 * * 3 * Copyright (C) 2023 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 #pragma once 22 // FLOAT values 23 #define IXHEAACE_COS_PI_BY_4 (0.70709228515625f) // 0.7071067812f 24 #define IXHEAACE_COS_PI_BY_8 (0.92388916015625f) // 0.923879532511287f 25 #define IXHEAACE_SIN_PI_BY_8 (0.3826904296875f) // 0.382683432365090f 26 #define IXHEAACE_COS_PI_BY_16 (0.98077392578125f) // 0.980785280403230f 27 #define IXHEAACE_SIN_PI_BY_16 (0.195098876953125f) // 0.195090322016128f 28 #define IXHEAACE_COS_3_PI_BY_16 (0.83148193359375f) // 0.831469612302545f 29 #define IXHEAACE_SIN_3_PI_BY_16 (0.555572509765625f) // 0.555570233019602f 30 #define IXHEAACE_INV_SQRT2 (7.071067811865475e-1f) 31 #define IXHEAACE_COS_PI_DIV8 (0.923879532511287f) 32 #define IXHEAACE_COS_3PI_DIV8 (3.826834323650898e-1f) 33 #define IXHEAACE_SQRT2PLUS1 (2.414213562373095f) 34 #define IXHEAACE_SQRT2MINUS1 (4.142135623730952e-1f) 35 36 #define INV_SQRT_2_FLOAT 0x3F3504F3 // 1/sqrt(2) in float 37 38 #define Q_POWER2_TABLE 30 39 40 #define DIV_FAC_24_BIT_PCM (256.0f) 41 #define DIV_FAC_32_BIT_PCM (65536.0f) 42 43 #define AUDIO_PROFILE_AAC_LC_L5 (0x2B) 44 #define AUDIO_PROFILE_HEAAC_L5 (0x2F) 45 #define AUDIO_PROFILE_HEAAC_V2_L5 (0x33) 46 #define AUDIO_PROFILE_AAC_LD_L4 (0x19) 47 #define AUDIO_PROFILE_AAC_ELD_L1 (0x4C) 48 #define AUDIO_PROFILE_AAC_ELD_L2 (0x4D) 49 #define AUDIO_PROFILE_AAC_ELD_L4 (0x4F) 50 #define AUDIO_PROFILE_USAC_L2 (0x45) 51 #define AUDIO_PROFILE_NOT_SPECIFIED (0xFE) 52 53 #define CLIP_SAVE_LO_LONG (0.2f) 54 #define CLIP_SAVE_HI_LONG (0.95f) 55 #define MIN_BITS_SAVE_LONG (-0.05f) 56 #define MAX_BITS_SAVE_LONG (0.3f) 57 #define CLIP_SPEND_LO_LONG (0.2f) 58 #define CLIP_SPEND_HI_LONG (0.95f) 59 #define MIN_BITS_SPEND_LONG (-0.10f) 60 #define MAX_BITS_SPEND_LONG (0.4f) 61 #define CLIP_SAVE_LO_SHORT (0.2f) 62 #define CLIP_SAVE_HI_SHORT (0.75f) 63 #define MIN_BITS_SAVE_SHORT (0.0f) 64 #define MAX_BITS_SAVE_SHORT (0.2f) 65 #define CLIP_SPEND_LO_SHORT (0.2f) 66 #define CLIP_SPEND_HI_SHORT (0.75f) 67 #define MIN_BITS_SPEND_SHORT (-0.05f) 68 #define MAX_BITS_SPEND_SHORT (0.5f) 69 typedef struct { 70 FLOAT32 re; 71 FLOAT32 im; 72 } complex; 73 74 typedef struct { 75 UWORD8 *data; /* data bits */ 76 WORD32 num_bit; /* number of bits in buffer */ 77 WORD32 size; /* buffer size in bytes */ 78 WORD32 current_bit; /* current bit position in bit stream */ 79 } ixheaace_bitstream_params; 80 81 /* bits in byte (char) */ 82 #define BYTE_NUMBIT 8 83 #define EIGHT_BYTE_SIZE (8) 84 85 /* here we distinguish between stereo and the mono only encoder */ 86 #define IXHEAACE_MAX_CH_IN_BS_ELE (2) 87 88 #define MAXIMUM_BS_ELE \ 89 8 /* 1 <SCE> 2 <CPE> 3<CPE> 4<CPE> 5<LFE> 6<SCE> - 8.1 channel + 2 cc channels*/ 90 91 #define FRAME_LEN_1024 1024 92 #define FRAME_LEN_512 512 93 #define FRAME_LEN_480 480 94 #define FRAME_LEN_960 960 95 96 #define AACENC_TRANS_FAC 8 /* encoder WORD16 long ratio */ 97 #define AACENC_PCM_LEVEL 1.0 /* encoder pcm 0db refernence */ 98 99 #define MAX_INPUT_CHAN (IXHEAACE_MAX_CH_IN_BS_ELE) 100 101 #define MAX_FRAME_LEN (1024) 102 103 /* channel masking*/ 104 #define CH_MASK_CENTER_FRONT (0x4) 105 #define CH_MASK_LEFT_RIGHT_FRONT (0x3) 106 #define CH_MASK_REAR_CENTER (0x100) 107 #define CH_MASK_LEFT_RIGHT_BACK (0X30) 108 #define CH_MASK_LFE (0x08) 109 110 // Change to accommodate 4:1 resampler - input = 4096 samples per channel 111 #define MAX_INPUT_SAMPLES (MAX_FRAME_LEN * MAX_INPUT_CHAN * 4) 112 113 #define NUM_CHANS_MONO (1) 114 #define NUM_CHANS_STEREO (2) 115 #define MAX_NUM_CORE_CODER_CHANNELS (6) 116 #define MIN_NUM_CORE_CODER_CHANNELS (1) 117 /*-------------------------- defines --------------------------------------*/ 118 119 #define BUFFERSIZE 1024 /* anc data */ 120 #define MAX_GAIN_INDEX (128)