| /****************************************************************************** |
| * |
| * Copyright 2003-2016 Broadcom Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| #define LOG_TAG "avrcp" |
| |
| #include "avrc_api.h" |
| #include "avrc_int.h" |
| #include "os/log.h" |
| #include "stack/include/bt_types.h" |
| |
| /************************************************************************** |
| * |
| * Function AVRC_IsValidAvcType |
| * |
| * Description Check if correct AVC type is specified |
| * |
| * Returns returns true if it is valid |
| * |
| * |
| ******************************************************************************/ |
| bool AVRC_IsValidAvcType(uint8_t pdu_id, uint8_t avc_type) { |
| bool result = false; |
| |
| if (avc_type < AVRC_RSP_NOT_IMPL) /* command msg */ |
| { |
| switch (pdu_id) { |
| case AVRC_PDU_GET_CAPABILITIES: /* 0x10 */ |
| case AVRC_PDU_LIST_PLAYER_APP_ATTR: /* 0x11 */ |
| case AVRC_PDU_LIST_PLAYER_APP_VALUES: /* 0x12 */ |
| case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE: /* 0x13 */ |
| case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT: /* 0x15 */ |
| case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT: /* 0x16 */ |
| case AVRC_PDU_GET_ELEMENT_ATTR: /* 0x20 */ |
| case AVRC_PDU_GET_PLAY_STATUS: /* 0x30 */ |
| if (avc_type == AVRC_CMD_STATUS) result = true; |
| break; |
| |
| case AVRC_PDU_SET_PLAYER_APP_VALUE: /* 0x14 */ |
| case AVRC_PDU_INFORM_DISPLAY_CHARSET: /* 0x17 */ |
| case AVRC_PDU_INFORM_BATTERY_STAT_OF_CT: /* 0x18 */ |
| case AVRC_PDU_REQUEST_CONTINUATION_RSP: /* 0x40 */ |
| case AVRC_PDU_ABORT_CONTINUATION_RSP: /* 0x41 */ |
| if (avc_type == AVRC_CMD_CTRL) result = true; |
| break; |
| |
| case AVRC_PDU_GET_FOLDER_ITEMS: /* 0x71 */ |
| result = true; |
| break; |
| |
| case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */ |
| case AVRC_PDU_SET_ADDRESSED_PLAYER: /* 0x60 */ |
| case AVRC_PDU_PLAY_ITEM: /* 0x74 */ |
| case AVRC_PDU_ADD_TO_NOW_PLAYING: /* 0x90 */ |
| if (avc_type == AVRC_CMD_CTRL) result = true; |
| break; |
| |
| case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */ |
| if (avc_type == AVRC_CMD_NOTIF) result = true; |
| break; |
| } |
| } else /* response msg */ |
| { |
| if (avc_type >= AVRC_RSP_NOT_IMPL && avc_type <= AVRC_RSP_INTERIM) |
| result = true; |
| } |
| |
| return result; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function avrc_is_valid_player_attrib_value |
| * |
| * Description Check if the given attrib value is valid for its attribute |
| * |
| * Returns returns true if it is valid |
| * |
| ******************************************************************************/ |
| bool avrc_is_valid_player_attrib_value(uint8_t attrib, uint8_t value) { |
| bool result = false; |
| |
| switch (attrib) { |
| case AVRC_PLAYER_SETTING_EQUALIZER: |
| if ((value > 0) && (value <= AVRC_PLAYER_VAL_ON)) result = true; |
| break; |
| |
| case AVRC_PLAYER_SETTING_REPEAT: |
| if ((value > 0) && (value <= AVRC_PLAYER_VAL_GROUP_REPEAT)) result = true; |
| break; |
| |
| case AVRC_PLAYER_SETTING_SHUFFLE: |
| case AVRC_PLAYER_SETTING_SCAN: |
| if ((value > 0) && (value <= AVRC_PLAYER_VAL_GROUP_SHUFFLE)) |
| result = true; |
| break; |
| } |
| |
| if (attrib >= AVRC_PLAYER_SETTING_LOW_MENU_EXT) result = true; |
| |
| if (!result) { |
| LOG_ERROR(" %s found not matching attrib(x%x)-value(x%x) pair!", __func__, |
| attrib, value); |
| } |
| return result; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function AVRC_IsValidPlayerAttr |
| * |
| * Description Check if the given attrib value is a valid one |
| * |
| * Returns returns true if it is valid |
| * |
| ******************************************************************************/ |
| bool AVRC_IsValidPlayerAttr(uint8_t attr) { |
| bool result = false; |
| |
| if ((attr >= AVRC_PLAYER_SETTING_EQUALIZER && |
| attr <= AVRC_PLAYER_SETTING_SCAN) || |
| (attr >= AVRC_PLAYER_SETTING_LOW_MENU_EXT)) { |
| result = true; |
| } |
| |
| return result; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function avrc_pars_pass_thru |
| * |
| * Description This function parses the pass thru commands defined by |
| * Bluetooth SIG |
| * |
| * Returns AVRC_STS_NO_ERROR, if the message in p_data is parsed |
| * successfully. |
| * Otherwise, the error code defined by AVRCP 1.4 |
| * |
| ******************************************************************************/ |
| tAVRC_STS avrc_pars_pass_thru(tAVRC_MSG_PASS* p_msg, |
| uint16_t* p_vendor_unique_id) { |
| uint8_t* p_data; |
| uint32_t co_id; |
| uint16_t id; |
| tAVRC_STS status = AVRC_STS_BAD_CMD; |
| |
| if (p_msg->op_id == AVRC_ID_VENDOR && |
| p_msg->pass_len == AVRC_PASS_THRU_GROUP_LEN) { |
| p_data = p_msg->p_pass_data; |
| AVRC_BE_STREAM_TO_CO_ID(co_id, p_data); |
| if (co_id == AVRC_CO_METADATA) { |
| BE_STREAM_TO_UINT16(id, p_data); |
| if (AVRC_IS_VALID_GROUP(id)) { |
| *p_vendor_unique_id = id; |
| status = AVRC_STS_NO_ERROR; |
| } |
| } |
| } |
| return status; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function avrc_opcode_from_pdu |
| * |
| * Description This function returns the opcode of the given pdu |
| * |
| * Returns AVRC_OP_VENDOR, AVRC_OP_PASS_THRU or AVRC_OP_BROWSE |
| * |
| ******************************************************************************/ |
| uint8_t avrc_opcode_from_pdu(uint8_t pdu) { |
| uint8_t opcode = 0; |
| |
| switch (pdu) { |
| case AVRC_PDU_SET_BROWSED_PLAYER: |
| case AVRC_PDU_GET_FOLDER_ITEMS: |
| case AVRC_PDU_CHANGE_PATH: |
| case AVRC_PDU_GET_ITEM_ATTRIBUTES: |
| case AVRC_PDU_SEARCH: |
| case AVRC_PDU_GENERAL_REJECT: |
| case AVRC_PDU_GET_TOTAL_NUM_OF_ITEMS: |
| opcode = AVRC_OP_BROWSE; |
| break; |
| |
| case AVRC_PDU_NEXT_GROUP: |
| case AVRC_PDU_PREV_GROUP: /* pass thru */ |
| opcode = AVRC_OP_PASS_THRU; |
| break; |
| |
| default: /* vendor */ |
| opcode = AVRC_OP_VENDOR; |
| break; |
| } |
| |
| return opcode; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function avrc_is_valid_opcode |
| * |
| * Description This function returns the opcode of the given pdu |
| * |
| * Returns AVRC_OP_VENDOR, AVRC_OP_PASS_THRU or AVRC_OP_BROWSE |
| * |
| ******************************************************************************/ |
| bool avrc_is_valid_opcode(uint8_t opcode) { |
| bool is_valid = false; |
| switch (opcode) { |
| case AVRC_OP_BROWSE: |
| case AVRC_OP_PASS_THRU: |
| case AVRC_OP_VENDOR: |
| is_valid = true; |
| break; |
| } |
| return is_valid; |
| } |