amiro-os / core / inc / aos_iostream.h @ 8d756b18
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| 1 | ba516b61 | Thomas Schöpping | /*
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| 2 | AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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| 3 | 84f0ce9e | Thomas Schöpping | Copyright (C) 2016..2019 Thomas Schöpping et al.
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| 4 | ba516b61 | Thomas Schöpping | |
| 5 | This program is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU General Public License as published by
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| 7 | the Free Software Foundation, either version 3 of the License, or
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| 8 | (at your option) any later version.
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| 9 | |||
| 10 | This program is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU General Public License for more details.
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| 14 | |||
| 15 | You should have received a copy of the GNU General Public License
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| 16 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 17 | */
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| 18 | |||
| 19 | 53710ca3 | Marc Rothmann | /**
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| 20 | * @file aos_iostream.h
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| 21 | * @brief Stream and channel macros and structures.
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| 22 | *
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| 23 | * @addtogroup aos_stream
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| 24 | * @{
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| 25 | */
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| 26 | |||
| 27 | ba516b61 | Thomas Schöpping | #ifndef _AMIROOS_IOSTREAM_H_
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| 28 | #define _AMIROOS_IOSTREAM_H_
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| 29 | |||
| 30 | #include <hal.h> |
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| 31 | #include <aos_types.h> |
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| 32 | #include <stdarg.h> |
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| 33 | |||
| 34 | |||
| 35 | |||
| 36 | /**
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| 37 | * @brief Channel flag to indicate whether the channel is attached to a stream.
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| 38 | */
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| 39 | #define AOS_IOCHANNEL_ATTACHED (1 << 0) |
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| 40 | |||
| 41 | /**
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| 42 | dd8738ea | Thomas Schöpping | * @brief Channel flag to indicate whether the channel is set as input.
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| 43 | */
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| 44 | #define AOS_IOCHANNEL_INPUT_ENABLE (1 << 1) |
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| 45 | |||
| 46 | /**
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| 47 | ba516b61 | Thomas Schöpping | * @brief Channel flag to indicate whether the channel is set as output.
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| 48 | */
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| 49 | dd8738ea | Thomas Schöpping | #define AOS_IOCHANNEL_OUTPUT_ENABLE (1 << 2) |
| 50 | ba516b61 | Thomas Schöpping | |
| 51 | /*
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| 52 | * forward definitions
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| 53 | */
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| 54 | typedef struct aos_iochannel AosIOChannel; |
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| 55 | typedef struct aos_ostream AosIOStream; |
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| 56 | |||
| 57 | /**
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| 58 | * @brief AosI=Channel specific methods.
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| 59 | */
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| 60 | #define _aos_iochannel_methods \
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| 61 | _base_asynchronous_channel_methods |
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| 62 | |||
| 63 | /**
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| 64 | * @brief AosIOChannel specific data.
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| 65 | */
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| 66 | #define _aos_iochannel_data \
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| 67 | /* pointer to a BaseAsynchronousChannel object */ \
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| 68 | BaseAsynchronousChannel* asyncchannel; \ |
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| 69 | /* pointer to the next channel in a AosIOStream */ \
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| 70 | AosIOChannel* next; \ |
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| 71 | /* flags related to the channel */ \
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| 72 | uint8_t flags; |
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| 73 | |||
| 74 | /**
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| 75 | * @extends BaseAsynchronousChannelVMT
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| 76 | *
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| 77 | * @brief AosIOChannel virtual methods table.
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| 78 | */
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| 79 | struct AosIOChannelVMT {
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| 80 | _aos_iochannel_methods |
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| 81 | }; |
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| 82 | |||
| 83 | /**
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| 84 | * @extends BaseAsynchronousChannel
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| 85 | *
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| 86 | * @brief I/O Channel class.
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| 87 | * @details This class implements an asynchronous I/O channel.
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| 88 | */
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| 89 | struct aos_iochannel {
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| 90 | /** @brief Virtual Methods Table. */
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| 91 | const struct AosIOChannelVMT* vmt; |
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| 92 | _aos_iochannel_data |
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| 93 | }; |
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| 94 | |||
| 95 | /**
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| 96 | * @brief AosIOStream methods.
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| 97 | */
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| 98 | #define _aos_iostream_methods \
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| 99 | _base_sequential_stream_methods |
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| 100 | |||
| 101 | /**
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| 102 | * @brief AosIOStream data.
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| 103 | */
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| 104 | #define _aos_iostream_data \
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| 105 | /* Pointer to the first channel in a list. */ \
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| 106 | AosIOChannel* channel; |
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| 107 | |||
| 108 | /**
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| 109 | * @extends BaseSequentialStream
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| 110 | *
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| 111 | * @brief AosIOStream virtual methods table.
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| 112 | */
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| 113 | struct AosIOStreamVMT {
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| 114 | _aos_iostream_methods |
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| 115 | }; |
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| 116 | |||
| 117 | /**
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| 118 | * @extends BaseSequentialStream
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| 119 | *
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| 120 | * @brief I/O Stream class.
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| 121 | * @details This class implements an base sequential stream.
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| 122 | * @todo So far only output but no input is supported.
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| 123 | */
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| 124 | struct aos_ostream {
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| 125 | const struct AosIOStreamVMT* vmt; |
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| 126 | _aos_iostream_data |
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| 127 | }; |
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| 128 | |||
| 129 | #ifdef __cplusplus
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| 130 | extern "C" { |
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| 131 | #endif
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| 132 | void aosIOStreamInit(AosIOStream* stream);
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| 133 | void aosIOChannelInit(AosIOChannel* channel, BaseAsynchronousChannel* asyncchannel);
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| 134 | void aosIOStreamAddChannel(AosIOStream* stream, AosIOChannel* channel);
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| 135 | aos_status_t aosIOStreamRemoveChannel(AosIOStream* stream, AosIOChannel* channel); |
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| 136 | dd8738ea | Thomas Schöpping | void aosIOChannelInputEnable(AosIOChannel* channel);
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| 137 | void aosIOChannelInputDisable(AosIOChannel* channel);
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| 138 | ba516b61 | Thomas Schöpping | void aosIOChannelOutputEnable(AosIOChannel* channel);
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| 139 | void aosIOChannelOutputDisable(AosIOChannel* channel);
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| 140 | #ifdef __cplusplus
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| 141 | } |
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| 142 | #endif
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| 143 | |||
| 144 | #endif /* _AMIROOS_IOSTREAM_H_ */ |
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| 145 | 53710ca3 | Marc Rothmann | |
| 146 | /** @} */ |