1 /* 2 * Copyright (C) 2018 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 /** 39 * @title base64 Decoder 40 * 41 */ 42 43 #ifndef BTSTACK_BASE_64_DECODER_H 44 #define BTSTACK_BASE_64_DECODER_H 45 46 #include <stdint.h> 47 48 #if defined __cplusplus 49 extern "C" { 50 #endif 51 52 typedef struct { 53 uint8_t pos; 54 uint8_t value; 55 } btstack_base64_decoder_t; 56 57 /* API_START */ 58 59 #define BTSTACK_BASE64_DECODER_MORE -1 60 #define BTSTACK_BASE64_DECODER_COMPLETE -2 61 #define BTSTACK_BASE64_DECODER_INVALID -3 62 #define BTSTACK_BASE64_DECODER_FULL -4 63 64 /** 65 * @brief Initialize base64 decoder 66 * @param context 67 */ 68 void btstack_base64_decoder_init(btstack_base64_decoder_t * context); 69 70 /** 71 * @brief Decode single byte 72 * @brief context 73 * @returns value, or BTSTACK_BASE64_DECODER_MORE, BTSTACK_BASE64_DECODER_COMPLETE, BTSTACK_BASE64_DECODER_INVALID 74 */ 75 int btstack_base64_decoder_process_byte(btstack_base64_decoder_t * context, uint8_t c); 76 77 /** 78 * @brief Decode block 79 * @brief input_data base64 encoded message 80 * @brief input_size 81 * @breif output_buffer 82 * @brief output_max_size 83 * @return output_size or BTSTACK_BASE64_DECODER_INVALID, BTSTACK_BASE64_DECODER_FULL 84 */ 85 int btstack_base64_decoder_process_block(const uint8_t * input_data, uint32_t input_size, uint8_t * output_buffer, uint32_t output_max_size); 86 87 /* API_END */ 88 89 #if defined __cplusplus 90 } 91 #endif 92 93 #endif // BTSTACK_BASE_64_DECODER_H