1 /* 2 * 3 * Copyright 2015 Rockchip Electronics Co. LTD 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 #ifndef __JPEGD_PARSER_H__ 19 #define __JPEGD_PARSER_H__ 20 21 #include <limits.h> 22 #include <string.h> 23 24 #include "mpp_bitread.h" 25 26 #include "jpegd_syntax.h" 27 28 #define JPEG_IDENTIFIER(a, b, c, d) \ 29 ((RK_U32)(d) | ((RK_U32)(c) << 8) | \ 30 ((RK_U32)(b) << 16) | ((RK_U32)(a) << 24)) 31 32 33 /* JPEG marker codes */ 34 enum JpegMarker { 35 /* start of frame */ 36 SOF0 = 0xc0, /* baseline */ 37 SOF1 = 0xc1, /* extended sequential, huffman */ 38 SOF2 = 0xc2, /* progressive, huffman */ 39 SOF3 = 0xc3, /* lossless, huffman */ 40 41 SOF5 = 0xc5, /* differential sequential, huffman */ 42 SOF6 = 0xc6, /* differential progressive, huffman */ 43 SOF7 = 0xc7, /* differential lossless, huffman */ 44 JPG = 0xc8, /* reserved for JPEG extension */ 45 SOF9 = 0xc9, /* extended sequential, arithmetic */ 46 SOF10 = 0xca, /* progressive, arithmetic */ 47 SOF11 = 0xcb, /* lossless, arithmetic */ 48 49 SOF13 = 0xcd, /* differential sequential, arithmetic */ 50 SOF14 = 0xce, /* differential progressive, arithmetic */ 51 SOF15 = 0xcf, /* differential lossless, arithmetic */ 52 53 DHT = 0xc4, /* define huffman tables */ 54 55 DAC = 0xcc, /* define arithmetic-coding conditioning */ 56 57 /* restart with modulo 8 count "m" */ 58 RST0 = 0xd0, 59 RST1 = 0xd1, 60 RST2 = 0xd2, 61 RST3 = 0xd3, 62 RST4 = 0xd4, 63 RST5 = 0xd5, 64 RST6 = 0xd6, 65 RST7 = 0xd7, 66 67 SOI = 0xd8, /* start of image */ 68 EOI = 0xd9, /* end of image */ 69 SOS = 0xda, /* start of scan */ 70 DQT = 0xdb, /* define quantization tables */ 71 DNL = 0xdc, /* define number of lines */ 72 DRI = 0xdd, /* define restart interval */ 73 DHP = 0xde, /* define hierarchical progression */ 74 EXP = 0xdf, /* expand reference components */ 75 76 APP0 = 0xe0, 77 APP1 = 0xe1, 78 APP2 = 0xe2, 79 APP3 = 0xe3, 80 APP4 = 0xe4, 81 APP5 = 0xe5, 82 APP6 = 0xe6, 83 APP7 = 0xe7, 84 APP8 = 0xe8, 85 APP9 = 0xe9, 86 APP10 = 0xea, 87 APP11 = 0xeb, 88 APP12 = 0xec, 89 APP13 = 0xed, 90 APP14 = 0xee, 91 APP15 = 0xef, 92 93 JPG0 = 0xf0, 94 JPG1 = 0xf1, 95 JPG2 = 0xf2, 96 JPG3 = 0xf3, 97 JPG4 = 0xf4, 98 JPG5 = 0xf5, 99 JPG6 = 0xf6, 100 SOF48 = 0xf7, ///< JPEG-LS 101 LSE = 0xf8, ///< JPEG-LS extension parameters 102 JPG9 = 0xf9, 103 JPG10 = 0xfa, 104 JPG11 = 0xfb, 105 JPG12 = 0xfc, 106 JPG13 = 0xfd, 107 108 COM = 0xfe, /* comment */ 109 110 TEM = 0x01, /* temporary private use for arithmetic coding */ 111 112 /* 0x02 -> 0xbf reserved */ 113 }; 114 115 typedef struct JpegdCtx { 116 MppBufSlots packet_slots; 117 MppBufSlots frame_slots; 118 119 /* slot index for output */ 120 RK_S32 frame_slot_index; 121 RK_U8 *recv_buffer; 122 123 /* input stream length or buffer size */ 124 RK_U32 streamLength; 125 126 /* input stream buffer size */ 127 RK_U32 bufferSize; 128 129 MppPacket input_packet; 130 MppFrame output_frame; 131 132 RK_S64 pts; 133 RK_U32 eos; 134 RK_U32 input_jpeg_count; 135 136 /* 0 - no need to copy stream; 1 - need to copy */ 137 RK_S32 copy_flag; 138 /* 0 - just scan parts of markers; 1 - scan all markers */ 139 RK_S32 scan_all_marker; 140 141 RK_U8 *buffer; 142 143 /* current start code */ 144 RK_S32 start_code; 145 146 /* bit read context */ 147 BitReadCtx_t *bit_ctx; 148 JpegdSyntax *syntax; 149 } JpegdCtx; 150 151 #endif /* __JPEGD_PARSER_H__ */ 152