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Diffstat (limited to 'plugin/ucs2-vol/inc/libmostvolume.h')
| -rw-r--r-- | plugin/ucs2-vol/inc/libmostvolume.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/plugin/ucs2-vol/inc/libmostvolume.h b/plugin/ucs2-vol/inc/libmostvolume.h new file mode 100644 index 0000000..1147993 --- /dev/null +++ b/plugin/ucs2-vol/inc/libmostvolume.h @@ -0,0 +1,111 @@ +/* + * libmostvolume example + * + * Copyright (C) 2017 Microchip Technology Germany II GmbH & Co. KG + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * You may also obtain this software under a propriety license from Microchip. + * Please contact Microchip for further information. + * + */ + +#ifndef LIB_MOST_VOLUME_H +#define LIB_MOST_VOLUME_H + +#include <stdint.h> + + +#ifdef __cplusplus +extern "C" { +#endif + +/** Describes the volume control */ +enum lib_most_volume_channel_t{ + LIB_MOST_VOLUME_CH_FRONT_LEFT = 0, + LIB_MOST_VOLUME_CH_FRONT_RIGHT = 1, + LIB_MOST_VOLUME_CH_REAR_LEFT = 2, + LIB_MOST_VOLUME_CH_REAR_RIGHT = 3, + LIB_MOST_VOLUME_CH_CENTER = 4, + LIB_MOST_VOLUME_CH_SUB = 5, + LIB_MOST_VOLUME_MASTER = 6 +}; + +/** Is fired when the application shall call "lib_most_volume_service()" after a certain time + * \param timeout Time in ms after which the application shall call lib_most_volume_service(). + * Valid values: + * 0x0000: as soon as possible, + * 0x0001..0xFFFE: timeout in ms, + * 0xFFFF: never + */ +typedef void (*lib_most_volume_service_cb_t)(uint16_t timeout); + +typedef void (*lib_most_volume_writei2c_result_cb_t)(uint8_t result, void *user_ptr); + +/** Callback function required to write volume changes to network devices + * \param node The node address + * \param data_ptr I2C command data + * \param data_sz Size of the I2C command data + * \return Returns \c 0 for success, other value on failure. + */ +typedef int (*lib_most_volume_writei2c_cb_t)(uint16_t node, uint8_t *data_ptr, uint8_t data_sz, + lib_most_volume_writei2c_result_cb_t result_fptr, + void *result_user_ptr); + +typedef struct lib_most_volume_init_ { + lib_most_volume_service_cb_t service_cb; + lib_most_volume_writei2c_cb_t writei2c_cb; + +} lib_most_volume_init_t; + + +/** Initializes the library + * \param UNICENS_inst Reference to the UNICENS instance, created by the application. + * \param req_service_fptr Callback function which is fired if the application shall call + * lib_most_volume_service. + * \return '0' on success, otherwise value >'0'. + */ +extern uint8_t lib_most_volume_init(lib_most_volume_init_t *init_ptr); + +/** Terminates the library + * \return '0' on success, otherwise value >'0'. + */ +extern uint8_t lib_most_volume_exit(void); + +/** Sets a single volume value. + * \param channel The volume control to be set. + * \param volume The volume value to be set. Valid values: 0..255. + * \return '0' on success, otherwise value >'0'. + */ +extern uint8_t lib_most_volume_set(enum lib_most_volume_channel_t channel, uint8_t volume); + +/** Must be called when the availability of a node has changed + * \param address The node address + * \param available Availability: 0 - not available, 1 - available + * \return '0' on success, otherwise value >'0'. + */ +extern uint8_t lib_most_volume_node_available(uint16_t address, uint8_t available); + +/** Shall be called either cyclically (e.g. 50ms -> polling) or after "timeout" + * when "service_fptr" is fired (-> event triggered). + * \return '0' on success, otherwise value >'0'. + */ +extern uint8_t lib_most_volume_service(void); + +#ifdef __cplusplus +} +#endif + +#endif /* LIB_MOST_VOLUME_H */ + |