| /****************************************************************************** |
| * |
| * Copyright (C) 2005-2012 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. |
| * |
| ******************************************************************************/ |
| #include <string.h> |
| |
| #include "bt_target.h" |
| #if defined(BTA_HH_INCLUDED) && (BTA_HH_INCLUDED == TRUE) |
| |
| |
| #include "bta_hh_int.h" |
| |
| /***************************************************************************** |
| ** Constants |
| *****************************************************************************/ |
| #define BTA_HH_KB_CTRL_MASK 0x11 |
| #define BTA_HH_KB_SHIFT_MASK 0x22 |
| #define BTA_HH_KB_ALT_MASK 0x44 |
| #define BTA_HH_KB_GUI_MASK 0x88 |
| |
| #define BTA_HH_KB_CAPS_LOCK 0x39 /* caps lock */ |
| #define BTA_HH_KB_NUM_LOCK 0x53 /* num lock */ |
| |
| |
| #define BTA_HH_MAX_RPT_CHARS 8 |
| |
| static const UINT8 bta_hh_mod_key_mask[BTA_HH_MOD_MAX_KEY] = |
| { |
| BTA_HH_KB_CTRL_MASK, |
| BTA_HH_KB_SHIFT_MASK, |
| BTA_HH_KB_ALT_MASK, |
| BTA_HH_KB_GUI_MASK |
| }; |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_find_cb |
| ** |
| ** Description Find best available control block according to BD address. |
| ** |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| UINT8 bta_hh_find_cb(BD_ADDR bda) |
| { |
| UINT8 xx; |
| |
| /* See how many active devices there are. */ |
| for (xx = 0; xx < BTA_HH_MAX_KNOWN; xx++) |
| { |
| /* check if any active/known devices is a match */ |
| if ((!bdcmp (bda, bta_hh_cb.kdev[xx].addr) && |
| bdcmp(bda, bd_addr_null) != 0) ) |
| { |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG2("found kdev_cb[%d] hid_handle = %d ", xx, |
| bta_hh_cb.kdev[xx].hid_handle) |
| #endif |
| return xx; |
| } |
| #if BTA_HH_DEBUG |
| else |
| APPL_TRACE_DEBUG4("in_use ? [%d] kdev[%d].hid_handle = %d state = [%d]", |
| bta_hh_cb.kdev[xx].in_use, xx, |
| bta_hh_cb.kdev[xx].hid_handle, |
| bta_hh_cb.kdev[xx].state); |
| #endif |
| } |
| |
| /* if no active device match, find a spot for it */ |
| for (xx = 0; xx < BTA_HH_MAX_KNOWN; xx++) |
| { |
| if (!bta_hh_cb.kdev[xx].in_use) |
| { |
| bdcpy(bta_hh_cb.kdev[xx].addr, bda); |
| break; |
| } |
| } |
| /* If device list full, report BTA_HH_MAX_KNOWN */ |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG2("bta_hh_find_cb:: index = %d while max = %d", |
| xx, BTA_HH_MAX_KNOWN); |
| #endif |
| |
| return xx; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_clean_up_kdev |
| ** |
| ** Description Clean up device control block when device is removed from |
| ** manitainace list, and update control block index map. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void bta_hh_clean_up_kdev(tBTA_HH_DEV_CB *p_cb) |
| { |
| UINT8 index; |
| |
| if (p_cb->hid_handle != BTA_HH_INVALID_HANDLE ) |
| bta_hh_cb.cb_index[p_cb->hid_handle] = BTA_HH_MAX_KNOWN; |
| |
| /* reset device control block */ |
| index = p_cb->index; /* Preserve index for this control block */ |
| |
| /* Free buffer for report descriptor info */ |
| utl_freebuf((void **)&p_cb->dscp_info.descriptor.dsc_list); |
| |
| memset(p_cb, 0, sizeof (tBTA_HH_DEV_CB)); /* Reset control block */ |
| |
| p_cb->index = index; /* Restore index for this control block */ |
| p_cb->state = BTA_HH_IDLE_ST; |
| p_cb->hid_handle = BTA_HH_INVALID_HANDLE; |
| |
| } |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_update_di_info |
| ** |
| ** Description Maintain a known device list for BTA HH. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void bta_hh_update_di_info(tBTA_HH_DEV_CB *p_cb, UINT16 vendor_id, UINT16 product_id, |
| UINT16 version) |
| { |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG3("vendor_id = 0x%2x product_id = 0x%2x version = 0x%2x", |
| vendor_id, product_id, version); |
| #endif |
| p_cb->dscp_info.vendor_id = vendor_id; |
| p_cb->dscp_info.product_id = product_id; |
| p_cb->dscp_info.version = version; |
| } |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_add_device_to_list |
| ** |
| ** Description Maintain a known device list for BTA HH. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void bta_hh_add_device_to_list(tBTA_HH_DEV_CB *p_cb, UINT8 handle, |
| UINT16 attr_mask, |
| tHID_DEV_DSCP_INFO *p_dscp_info, |
| UINT8 sub_class, |
| UINT16 ssr_max_latency, |
| UINT16 ssr_min_tout, |
| UINT8 app_id) |
| { |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG1("subclass = 0x%2x", sub_class); |
| #endif |
| |
| p_cb->hid_handle = handle; |
| p_cb->in_use = TRUE; |
| p_cb->attr_mask = attr_mask; |
| |
| p_cb->sub_class = sub_class; |
| p_cb->app_id = app_id; |
| |
| if (ssr_max_latency == HID_SSR_PARAM_INVALID) |
| p_cb->dscp_info.ssr_max_latency = BTA_HH_SSR_MAX_LATENCY_DEF; |
| else |
| p_cb->dscp_info.ssr_max_latency = ssr_max_latency; |
| |
| if (ssr_min_tout == HID_SSR_PARAM_INVALID) |
| p_cb->dscp_info.ssr_min_tout = BTA_HH_SSR_MIN_TOUT_DEF; |
| else |
| p_cb->dscp_info.ssr_min_tout = ssr_min_tout; |
| |
| /* store report descriptor info */ |
| if ( p_dscp_info) |
| { |
| utl_freebuf((void **)&p_cb->dscp_info.descriptor.dsc_list); |
| |
| if (p_dscp_info->dl_len && |
| (p_cb->dscp_info.descriptor.dsc_list = |
| (UINT8 *)GKI_getbuf(p_dscp_info->dl_len)) != NULL) |
| { |
| p_cb->dscp_info.descriptor.dl_len = p_dscp_info->dl_len; |
| memcpy(p_cb->dscp_info.descriptor.dsc_list, p_dscp_info->dsc_list, |
| p_dscp_info->dl_len); |
| } |
| } |
| return; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_tod_spt |
| ** |
| ** Description Check to see if this type of device is supported |
| ** |
| ** Returns |
| ** |
| *******************************************************************************/ |
| BOOLEAN bta_hh_tod_spt(tBTA_HH_DEV_CB *p_cb,UINT8 sub_class) |
| { |
| UINT8 xx; |
| UINT8 cod = (sub_class >> 2); /* lower two bits are reserved */ |
| |
| for (xx = 0 ; xx < p_bta_hh_cfg->max_devt_spt; xx ++) |
| { |
| if (cod == (UINT8) p_bta_hh_cfg->p_devt_list[xx].tod) |
| { |
| p_cb->app_id = p_bta_hh_cfg->p_devt_list[xx].app_id; |
| #if BTA_HH_DEBUG |
| APPL_TRACE_EVENT1("bta_hh_tod_spt sub_class:0x%x supported", sub_class); |
| #endif |
| return TRUE; |
| } |
| } |
| #if BTA_HH_DEBUG |
| APPL_TRACE_EVENT1("bta_hh_tod_spt sub_class:0x%x NOT supported", sub_class); |
| #endif |
| return FALSE; |
| } |
| |
| |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_parse_keybd_rpt |
| ** |
| ** Description This utility function parse a boot mode keyboard report. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void bta_hh_parse_keybd_rpt(tBTA_HH_BOOT_RPT *p_kb_data, UINT8 *p_report, |
| UINT16 report_len) |
| { |
| tBTA_HH_KB_CB *p_kb = &bta_hh_cb.kb_cb; |
| tBTA_HH_KEYBD_RPT *p_data = &p_kb_data->data_rpt.keybd_rpt; |
| |
| UINT8 this_char, ctl_shift; |
| UINT16 xx, yy, key_idx = 0; |
| UINT8 this_report[BTA_HH_MAX_RPT_CHARS]; |
| |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG2("bta_hh_parse_keybd_rpt: (report=%p, report_len=%d) called", |
| p_report, report_len); |
| #endif |
| |
| if (report_len < 2) |
| return; |
| |
| ctl_shift = *p_report++; |
| report_len--; |
| |
| if (report_len > BTA_HH_MAX_RPT_CHARS) |
| report_len = BTA_HH_MAX_RPT_CHARS; |
| |
| memset (this_report, 0, BTA_HH_MAX_RPT_CHARS); |
| memset (p_data, 0, sizeof(tBTA_HH_KEYBD_RPT)); |
| memcpy (this_report, p_report, report_len); |
| |
| /* Take care of shift, control, GUI and alt, modifier keys */ |
| for (xx = 0; xx < BTA_HH_MOD_MAX_KEY; xx ++ ) |
| { |
| if (ctl_shift & bta_hh_mod_key_mask[xx]) |
| { |
| APPL_TRACE_DEBUG1("Mod Key[%02x] pressed", bta_hh_mod_key_mask[xx] ); |
| p_kb->mod_key[xx] = TRUE; |
| } |
| else if (p_kb->mod_key[xx]) |
| { |
| p_kb->mod_key[xx] = FALSE; |
| } |
| /* control key flag is set */ |
| p_data->mod_key[xx] = p_kb->mod_key[xx]; |
| } |
| |
| /***************************************************************************/ |
| /* First step is to remove all characters we saw in the last report */ |
| /***************************************************************************/ |
| for (xx = 0; xx < report_len; xx++) |
| { |
| for (yy = 0; yy < BTA_HH_MAX_RPT_CHARS; yy++) |
| { |
| if (this_report[xx] == p_kb->last_report[yy]) |
| { |
| this_report[xx] = 0; |
| } |
| } |
| } |
| /***************************************************************************/ |
| /* Now, process all the characters in the report, up to 6 keycodes */ |
| /***************************************************************************/ |
| for (xx = 0; xx < report_len; xx++) |
| { |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG1("this_char = %02x", this_report[xx]); |
| #endif |
| if ((this_char = this_report[xx]) == 0) |
| continue; |
| /* take the key code as the report data */ |
| if (this_report[xx] == BTA_HH_KB_CAPS_LOCK) |
| p_kb->caps_lock = p_kb->caps_lock ? FALSE : TRUE; |
| else if (this_report[xx] == BTA_HH_KB_NUM_LOCK) |
| p_kb->num_lock = p_kb->num_lock ? FALSE : TRUE; |
| else |
| p_data->this_char[key_idx ++] = this_char; |
| |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG1("found keycode %02x ", this_report[xx]); |
| #endif |
| p_data->caps_lock = p_kb->caps_lock; |
| p_kb->num_lock = p_kb->num_lock; |
| } |
| |
| memset (p_kb->last_report, 0, BTA_HH_MAX_RPT_CHARS); |
| memcpy (p_kb->last_report, p_report, report_len); |
| |
| return; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_parse_mice_rpt |
| ** |
| ** Description This utility function parse a boot mode mouse report. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| void bta_hh_parse_mice_rpt(tBTA_HH_BOOT_RPT *p_mice_data, UINT8 *p_report, |
| UINT16 report_len) |
| { |
| tBTA_HH_MICE_RPT *p_data = &p_mice_data->data_rpt.mice_rpt; |
| #if BTA_HH_DEBUG |
| UINT8 xx; |
| |
| APPL_TRACE_DEBUG2("bta_hh_parse_mice_rpt: bta_keybd_rpt_rcvd(report=%p, \ |
| report_len=%d) called", p_report, report_len); |
| #endif |
| |
| if (report_len < 3) |
| return; |
| |
| if (report_len > BTA_HH_MAX_RPT_CHARS) |
| report_len = BTA_HH_MAX_RPT_CHARS; |
| |
| #if BTA_HH_DEBUG |
| for (xx = 0; xx < report_len; xx++) |
| { |
| APPL_TRACE_DEBUG1("this_char = %02x", p_report[xx]); |
| } |
| #endif |
| |
| /* only first bytes lower 3 bits valid */ |
| p_data->mouse_button = (p_report[0] & 0x07); |
| |
| /* x displacement */ |
| p_data->delta_x = p_report[1]; |
| |
| /* y displacement */ |
| p_data->delta_y = p_report[2]; |
| |
| #if BTA_HH_DEBUG |
| APPL_TRACE_DEBUG1("mice button: 0x%2x", p_data->mouse_button); |
| APPL_TRACE_DEBUG2("mice move: x = %d y = %d", p_data->delta_x, |
| p_data->delta_y ); |
| #endif |
| |
| return; |
| |
| } |
| |
| #if BTA_HH_DEBUG |
| /******************************************************************************* |
| ** |
| ** Function bta_hh_trace_dev_db |
| ** |
| ** Description Check to see if this type of device is supported |
| ** |
| ** Returns |
| ** |
| *******************************************************************************/ |
| void bta_hh_trace_dev_db(void) |
| { |
| UINT8 xx; |
| |
| APPL_TRACE_DEBUG0("bta_hh_trace_dev_db:: Device DB list********************"); |
| |
| for (xx = 0; xx < BTA_HH_MAX_KNOWN; xx++) |
| { |
| APPL_TRACE_DEBUG3("kdev[%d] in_use[%d] handle[%d] ",xx, |
| bta_hh_cb.kdev[xx].in_use, bta_hh_cb.kdev[xx].hid_handle); |
| |
| APPL_TRACE_DEBUG4("\t\t\t attr_mask[%04x] state [%d] sub_class[%02x] index = %d", |
| bta_hh_cb.kdev[xx].attr_mask, bta_hh_cb.kdev[xx].state, |
| bta_hh_cb.kdev[xx].sub_class, bta_hh_cb.kdev[xx].index); |
| } |
| APPL_TRACE_DEBUG0("*********************************************************"); |
| } |
| #endif |
| #endif /* HL_INCLUDED */ |