1 // Copyright (C) 2022 Beken Corporation 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #pragma once 16 17 #include <common/bk_err.h> 18 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 int jpg_decoder_fun(unsigned char *jpg_buf, unsigned char ** Y_buf, int pic_size); 24 void jpg_get_pic_size(int *width, int *heigth); 25 26 27 typedef struct _JPG_DECODER_ST 28 { 29 int width; 30 int heigth; 31 int scale_ratio;//0,1 32 int line_wbyte; 33 int rd_ptr; 34 int jpg_file_size;//jpg file size 35 unsigned char *outputbuf;//y data 36 unsigned char *inputbuf;//jpg data 37 unsigned char *workbuf; 38 39 }JPG_DECODER_ST; 40 41 #define AUTO_DEC 1 42 43 44 /**<jpeg dec input size*/ 45 #define V1080P_RD_LEN (20480*16-1) //320k 46 #define V720P_RD_LEN (20480*12-1) //240K 47 #define VGA_RD_LEN (20480*5-1) //100k 48 #define HVGA_RD_LEN (20480*4-1) //80k 49 50 /**<jpeg dec output size*/ 51 #define PIXEL_320_480 (320 * 480 * 2) 52 #define PIXEL_480_272 261120 53 #define PIXEL_640_480 614400 54 #define PIXEL_1280_720 1843200 55 #define PIXEL_1920_1080 4147200 56 57 /**<jpeg dec block num*/ 58 #define X_PIXEL_320_BLOCK 4800 59 #define X_PIXEL_480_BLOCK 4080 60 #define X_PIXEL_640_BLOCK 9600 61 #define X_PIXEL_1280_BLOCK 28800 62 #define X_PIXEL_1920_BLOCK 64800 63 64 #define JPEGDEC_START 1 65 #define JPEGDEC_DC_CLEAR 4 66 67 68 /* 69 * @} 70 */ 71 72 #ifdef __cplusplus 73 } 74 #endif 75 76 77