blob: 038efe62f2e06bdb8c1c2ec5b52b82e2619a84b7 [file] [log] [blame]
/******************************************************************************
*
* Copyright 2006-2013 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 "avrc_api.h"
#include "avrc_defs.h"
#include "avrc_int.h"
#include "bt_common.h"
#include "bt_utils.h"
#include "log/log.h"
#include "osi/include/osi.h"
/*****************************************************************************
* Global data
****************************************************************************/
#define MIN(x, y) ((x) < (y) ? (x) : (y))
/*******************************************************************************
*
* Function avrc_pars_vendor_rsp
*
* Description This function parses the vendor specific 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
*
******************************************************************************/
static tAVRC_STS avrc_pars_vendor_rsp(tAVRC_MSG_VENDOR* p_msg,
tAVRC_RESPONSE* p_result) {
tAVRC_STS status = AVRC_STS_NO_ERROR;
uint8_t* p;
uint16_t len;
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
uint8_t eventid = 0;
#endif
/* Check the vendor data */
if (p_msg->vendor_len == 0) return AVRC_STS_NO_ERROR;
if (p_msg->p_vendor_data == NULL) return AVRC_STS_INTERNAL_ERR;
p = p_msg->p_vendor_data;
BE_STREAM_TO_UINT8(p_result->pdu, p);
p++; /* skip the reserved/packe_type byte */
BE_STREAM_TO_UINT16(len, p);
AVRC_TRACE_DEBUG("%s ctype:0x%x pdu:0x%x, len:%d/0x%x", __func__,
p_msg->hdr.ctype, p_result->pdu, len, len);
if (p_msg->hdr.ctype == AVRC_RSP_REJ) {
p_result->rsp.status = *p;
return p_result->rsp.status;
}
switch (p_result->pdu) {
/* case AVRC_PDU_REQUEST_CONTINUATION_RSP: 0x40 */
/* case AVRC_PDU_ABORT_CONTINUATION_RSP: 0x41 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
if (len != 1)
status = AVRC_STS_INTERNAL_ERR;
else {
BE_STREAM_TO_UINT8(p_result->volume.volume, p);
}
break;
#endif /* (AVRC_ADV_CTRL_INCLUDED == TRUE) */
case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
BE_STREAM_TO_UINT8(eventid, p);
if (AVRC_EVT_VOLUME_CHANGE == eventid &&
(AVRC_RSP_CHANGED == p_msg->hdr.ctype ||
AVRC_RSP_INTERIM == p_msg->hdr.ctype ||
AVRC_RSP_REJ == p_msg->hdr.ctype ||
AVRC_RSP_NOT_IMPL == p_msg->hdr.ctype)) {
p_result->reg_notif.status = p_msg->hdr.ctype;
p_result->reg_notif.event_id = eventid;
BE_STREAM_TO_UINT8(p_result->reg_notif.param.volume, p);
}
AVRC_TRACE_DEBUG("%s PDU reg notif response:event %x, volume %x",
__func__, eventid, p_result->reg_notif.param.volume);
#endif /* (AVRC_ADV_CTRL_INCLUDED == TRUE) */
break;
default:
status = AVRC_STS_BAD_CMD;
break;
}
return status;
}
tAVRC_STS avrc_parse_notification_rsp(uint8_t* p_stream, uint16_t len,
tAVRC_REG_NOTIF_RSP* p_rsp) {
uint16_t min_len = 1;
if (len < min_len) goto length_error;
BE_STREAM_TO_UINT8(p_rsp->event_id, p_stream);
switch (p_rsp->event_id) {
case AVRC_EVT_PLAY_STATUS_CHANGE:
min_len += 1;
if (len < min_len) goto length_error;
BE_STREAM_TO_UINT8(p_rsp->param.play_status, p_stream);
break;
case AVRC_EVT_TRACK_CHANGE:
min_len += 8;
if (len < min_len) goto length_error;
BE_STREAM_TO_ARRAY(p_stream, p_rsp->param.track, 8);
break;
case AVRC_EVT_APP_SETTING_CHANGE:
min_len += 1;
if (len < min_len) goto length_error;
BE_STREAM_TO_UINT8(p_rsp->param.player_setting.num_attr, p_stream);
if (p_rsp->param.player_setting.num_attr > AVRC_MAX_APP_SETTINGS) {
android_errorWriteLog(0x534e4554, "73782082");
p_rsp->param.player_setting.num_attr = AVRC_MAX_APP_SETTINGS;
}
min_len += p_rsp->param.player_setting.num_attr * 2;
if (len < min_len) goto length_error;
for (int index = 0; index < p_rsp->param.player_setting.num_attr;
index++) {
BE_STREAM_TO_UINT8(p_rsp->param.player_setting.attr_id[index],
p_stream);
BE_STREAM_TO_UINT8(p_rsp->param.player_setting.attr_value[index],
p_stream);
}
break;
case AVRC_EVT_NOW_PLAYING_CHANGE:
break;
case AVRC_EVT_AVAL_PLAYERS_CHANGE:
break;
case AVRC_EVT_ADDR_PLAYER_CHANGE:
break;
case AVRC_EVT_UIDS_CHANGE:
break;
case AVRC_EVT_TRACK_REACHED_END:
case AVRC_EVT_TRACK_REACHED_START:
case AVRC_EVT_PLAY_POS_CHANGED:
case AVRC_EVT_BATTERY_STATUS_CHANGE:
case AVRC_EVT_SYSTEM_STATUS_CHANGE:
default:
break;
}
return AVRC_STS_NO_ERROR;
length_error:
android_errorWriteLog(0x534e4554, "111450417");
AVRC_TRACE_WARNING("%s: invalid parameter length %d: must be at least %d",
__func__, len, min_len);
return AVRC_STS_INTERNAL_ERR;
}
static tAVRC_STS avrc_pars_browse_rsp(tAVRC_MSG_BROWSE* p_msg,
tAVRC_RESPONSE* p_rsp) {
tAVRC_STS status = AVRC_STS_NO_ERROR;
uint8_t pdu;
if (p_msg->browse_len == 0) {
AVRC_TRACE_ERROR("%s length ", p_msg->browse_len);
return AVRC_STS_BAD_PARAM;
}
uint8_t* p = p_msg->p_browse_data;
/* read the pdu */
BE_STREAM_TO_UINT8(pdu, p);
uint16_t pkt_len;
/* read the entire packet len */
BE_STREAM_TO_UINT16(pkt_len, p);
AVRC_TRACE_DEBUG("%s pdu %d", __func__, pdu);
/* used to track how much we have read, if we cannot read anymore but the
* packet says so then we have a malformed packet. Also vice versa. */
uint16_t pkt_len_read = 0;
switch (pdu) {
case AVRC_PDU_GET_FOLDER_ITEMS: {
tAVRC_GET_ITEMS_RSP* get_item_rsp = &(p_rsp->get_items);
/* Copy back the PDU */
get_item_rsp->pdu = pdu;
/* read the status */
BE_STREAM_TO_UINT8(get_item_rsp->status, p);
/* read the UID counter */
BE_STREAM_TO_UINT16(get_item_rsp->uid_counter, p);
/* read the number of items */
BE_STREAM_TO_UINT16(get_item_rsp->item_count, p);
pkt_len_read += 5;
AVRC_TRACE_DEBUG(
"%s pdu %d status %d pkt_len %d uid counter %d item count %d",
__func__, get_item_rsp->pdu, get_item_rsp->status, pkt_len,
get_item_rsp->uid_counter, get_item_rsp->item_count);
if (get_item_rsp->status != AVRC_STS_NO_ERROR) {
AVRC_TRACE_WARNING("%s returning error %d", __func__,
get_item_rsp->status);
return get_item_rsp->status;
}
/* get each of the items */
get_item_rsp->p_item_list = (tAVRC_ITEM*)osi_malloc(
get_item_rsp->item_count * (sizeof(tAVRC_ITEM)));
tAVRC_ITEM* curr_item = get_item_rsp->p_item_list;
for (int i = 0; i < get_item_rsp->item_count; i++) {
BE_STREAM_TO_UINT8(curr_item->item_type, p);
pkt_len_read += 1;
AVRC_TRACE_DEBUG("%s item type %d", __func__, curr_item->item_type);
switch (curr_item->item_type) {
case AVRC_ITEM_PLAYER: {
/* Handle player */
tAVRC_ITEM_PLAYER* player = &(curr_item->u.player);
uint8_t player_len;
BE_STREAM_TO_UINT16(player_len, p);
BE_STREAM_TO_UINT16(player->player_id, p);
BE_STREAM_TO_UINT8(player->major_type, p);
BE_STREAM_TO_UINT32(player->sub_type, p);
BE_STREAM_TO_UINT8(player->play_status, p);
BE_STREAM_TO_ARRAY(p, player->features, AVRC_FEATURE_MASK_SIZE);
pkt_len_read += (10 + AVRC_FEATURE_MASK_SIZE);
/* read str */
BE_STREAM_TO_UINT16(player->name.charset_id, p);
BE_STREAM_TO_UINT16(player->name.str_len, p);
player->name.p_str = (uint8_t*)osi_malloc(
(player->name.str_len + 1) * sizeof(uint8_t));
BE_STREAM_TO_ARRAY(p, player->name.p_str, player->name.str_len);
pkt_len_read += (4 + player->name.str_len);
AVRC_TRACE_DEBUG(
"%s type %d id %d mtype %d stype %d ps %d cs %d name len %d",
__func__, curr_item->item_type, player->player_id,
player->major_type, player->sub_type, player->play_status,
player->name.charset_id, player->name.str_len);
} break;
case AVRC_ITEM_FOLDER: {
tAVRC_ITEM_FOLDER* folder = &(curr_item->u.folder);
uint16_t folder_len;
BE_STREAM_TO_UINT16(folder_len, p);
BE_STREAM_TO_ARRAY(p, folder->uid, AVRC_UID_SIZE);
BE_STREAM_TO_UINT8(folder->type, p);
BE_STREAM_TO_UINT8(folder->playable, p);
pkt_len_read += (4 + AVRC_UID_SIZE);
/* read str, encoding to be handled by upper layers */
BE_STREAM_TO_UINT16(folder->name.charset_id, p);
BE_STREAM_TO_UINT16(folder->name.str_len, p);
folder->name.p_str = (uint8_t*)osi_malloc(
(folder->name.str_len + 1) * sizeof(uint8_t));
BE_STREAM_TO_ARRAY(p, folder->name.p_str, folder->name.str_len);
pkt_len_read += (4 + folder->name.str_len);
AVRC_TRACE_DEBUG("%s type %d playable %d cs %d name len %d",
__func__, folder->type, folder->playable,
folder->name.charset_id, folder->name.str_len);
} break;
case AVRC_ITEM_MEDIA: {
tAVRC_ITEM_MEDIA* media = &(curr_item->u.media);
uint8_t media_len;
BE_STREAM_TO_UINT16(media_len, p);
BE_STREAM_TO_ARRAY(p, media->uid, AVRC_UID_SIZE);
BE_STREAM_TO_UINT8(media->type, p);
pkt_len_read += (3 + AVRC_UID_SIZE);
/* read str, encoding to be handled by upper layers */
BE_STREAM_TO_UINT16(media->name.charset_id, p);
BE_STREAM_TO_UINT16(media->name.str_len, p);
media->name.p_str =
(uint8_t*)osi_malloc((media->name.str_len) * sizeof(uint8_t));
BE_STREAM_TO_ARRAY(p, media->name.p_str, media->name.str_len);
BE_STREAM_TO_UINT8(media->attr_count, p);
AVRC_TRACE_DEBUG("%s media type %d charset id %d len %d attr ct %d",
__func__, media->type, media->name.charset_id,
media->name.str_len, media->attr_count);
pkt_len_read += (5 + media->name.str_len);
media->p_attr_list = (tAVRC_ATTR_ENTRY*)osi_malloc(
media->attr_count * sizeof(tAVRC_ATTR_ENTRY));
for (int jk = 0; jk < media->attr_count; jk++) {
tAVRC_ATTR_ENTRY* attr_entry = &(media->p_attr_list[jk]);
BE_STREAM_TO_UINT32(attr_entry->attr_id, p);
/* Parse the name now */
BE_STREAM_TO_UINT16(attr_entry->name.charset_id, p);
BE_STREAM_TO_UINT16(attr_entry->name.str_len, p);
attr_entry->name.p_str = (uint8_t*)osi_malloc(
attr_entry->name.str_len * sizeof(uint8_t));
BE_STREAM_TO_ARRAY(p, attr_entry->name.p_str,
attr_entry->name.str_len);
pkt_len_read += (8 + attr_entry->name.str_len);
AVRC_TRACE_DEBUG("%s media attr id %d cs %d name len %d",
__func__, attr_entry->attr_id,
attr_entry->name.charset_id,
attr_entry->name.str_len);
}
} break;
default:
AVRC_TRACE_ERROR("%s item type not handled %d", __func__,
curr_item->item_type);
return AVRC_STS_INTERNAL_ERR;
}
/* we check if we have overrun */
if (pkt_len_read > pkt_len) {
AVRC_TRACE_ERROR("%s overflow in read pkt_len %d pkt_len_read %d",
__func__, pkt_len, pkt_len_read);
return AVRC_STS_BAD_CMD;
}
AVRC_TRACE_DEBUG("%s pkt_len %d pkt_len_read %d", __func__, pkt_len,
pkt_len_read);
/* advance to populate the next item */
curr_item++;
}
break;
}
case AVRC_PDU_CHANGE_PATH: {
tAVRC_CHG_PATH_RSP* change_path_rsp = &(p_rsp->chg_path);
/* Copyback the PDU */
change_path_rsp->pdu = pdu;
/* Read the status */
BE_STREAM_TO_UINT8(change_path_rsp->status, p);
/* Read the number of items in folder */
BE_STREAM_TO_UINT32(change_path_rsp->num_items, p);
pkt_len_read += 5;
AVRC_TRACE_DEBUG("%s pdu %d status %d item count %d", __func__,
change_path_rsp->pdu, change_path_rsp->status,
change_path_rsp->num_items);
break;
}
case AVRC_PDU_SET_BROWSED_PLAYER: {
tAVRC_SET_BR_PLAYER_RSP* set_br_pl_rsp = &(p_rsp->br_player);
/* Copyback the PDU */
set_br_pl_rsp->pdu = pdu;
/* Read the status */
BE_STREAM_TO_UINT8(set_br_pl_rsp->status, p);
if (set_br_pl_rsp->status != AVRC_STS_NO_ERROR) {
AVRC_TRACE_ERROR(
"%s Stopping further parsing because player not browsable sts %d",
__func__, set_br_pl_rsp->status);
break;
}
BE_STREAM_TO_UINT16(set_br_pl_rsp->uid_counter, p);
BE_STREAM_TO_UINT32(set_br_pl_rsp->num_items, p);
BE_STREAM_TO_UINT16(set_br_pl_rsp->charset_id, p);
BE_STREAM_TO_UINT8(set_br_pl_rsp->folder_depth, p);
AVRC_TRACE_DEBUG(
"%s AVRC_PDU_SET_BROWSED_PLAYER status %d items %d cs %d depth %d",
__func__, set_br_pl_rsp->status, set_br_pl_rsp->num_items,
set_br_pl_rsp->charset_id, set_br_pl_rsp->folder_depth);
pkt_len_read += 10;
set_br_pl_rsp->p_folders = (tAVRC_NAME*)osi_malloc(
set_br_pl_rsp->num_items * sizeof(tAVRC_NAME));
/* Read each of the folder in the depth */
for (uint32_t i = 0; i < set_br_pl_rsp->folder_depth; i++) {
tAVRC_NAME* folder_name = &(set_br_pl_rsp->p_folders[i]);
BE_STREAM_TO_UINT16(folder_name->str_len, p);
AVRC_TRACE_DEBUG("%s AVRC_PDU_SET_BROWSED_PLAYER item: %d len: %d",
__func__, i, folder_name->str_len);
folder_name->p_str =
(uint8_t*)osi_malloc((folder_name->str_len + 1) * sizeof(uint8_t));
BE_STREAM_TO_ARRAY(p, folder_name->p_str, folder_name->str_len);
pkt_len_read += (2 + folder_name->str_len);
}
break;
}
default:
AVRC_TRACE_ERROR("%s pdu %d not handled", __func__, pdu);
}
if (pkt_len != pkt_len_read) {
AVRC_TRACE_ERROR("%s finished pkt_len %d pkt_len_read %d", __func__,
pkt_len, pkt_len_read);
return AVRC_STS_BAD_CMD;
}
return status;
}
/*******************************************************************************
*
* Function avrc_ctrl_pars_vendor_rsp
*
* Description This function parses the vendor specific 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
*
******************************************************************************/
static tAVRC_STS avrc_ctrl_pars_vendor_rsp(tAVRC_MSG_VENDOR* p_msg,
tAVRC_RESPONSE* p_result,
uint8_t* p_buf, uint16_t* buf_len) {
if (p_msg->vendor_len < 4) {
android_errorWriteLog(0x534e4554, "111450417");
AVRC_TRACE_WARNING("%s: message length %d too short: must be at least 4",
__func__, p_msg->vendor_len);
return AVRC_STS_INTERNAL_ERR;
}
uint8_t* p = p_msg->p_vendor_data;
BE_STREAM_TO_UINT8(p_result->pdu, p);
p++; /* skip the reserved/packe_type byte */
uint16_t len;
uint16_t min_len = 0;
BE_STREAM_TO_UINT16(len, p);
AVRC_TRACE_DEBUG("%s ctype:0x%x pdu:0x%x, len:%d vendor_len=0x%x", __func__,
p_msg->hdr.ctype, p_result->pdu, len, p_msg->vendor_len);
if (p_msg->vendor_len < len + 4) {
android_errorWriteLog(0x534e4554, "111450417");
AVRC_TRACE_WARNING("%s: message length %d too short: must be at least %d",
__func__, p_msg->vendor_len, len + 4);
return AVRC_STS_INTERNAL_ERR;
}
/* Todo: Issue in handling reject, check */
if (p_msg->hdr.ctype == AVRC_RSP_REJ) {
min_len += 1;
if (len < min_len) goto length_error;
p_result->rsp.status = *p;
return p_result->rsp.status;
}
/* TODO: Break the big switch into functions. */
switch (p_result->pdu) {
/* case AVRC_PDU_REQUEST_CONTINUATION_RSP: 0x40 */
/* case AVRC_PDU_ABORT_CONTINUATION_RSP: 0x41 */
case AVRC_PDU_REGISTER_NOTIFICATION:
return avrc_parse_notification_rsp(p, len, &p_result->reg_notif);
case AVRC_PDU_GET_CAPABILITIES:
if (len == 0) {
p_result->get_caps.count = 0;
p_result->get_caps.capability_id = 0;
break;
}
min_len += 2;
if (len < min_len) goto length_error;
BE_STREAM_TO_UINT8(p_result->get_caps.capability_id, p);
BE_STREAM_TO_UINT8(p_result->get_caps.count, p);
AVRC_TRACE_DEBUG("%s cap id = %d, cap_count = %d ", __func__,
p_result->get_caps.capability_id,
p_result->get_caps.count);
if (p_result->get_caps.capability_id == AVRC_CAP_COMPANY_ID) {
min_len += MIN(p_result->get_caps.count, AVRC_CAP_MAX_NUM_COMP_ID) * 3;
if (len < min_len) goto length_error;
for (int xx = 0; ((xx < p_result->get_caps.count) &&
(xx < AVRC_CAP_MAX_NUM_COMP_ID));
xx++) {
BE_STREAM_TO_UINT24(p_result->get_caps.param.company_id[xx], p);
}
} else if (p_result->get_caps.capability_id ==
AVRC_CAP_EVENTS_SUPPORTED) {
min_len += MIN(p_result->get_caps.count, AVRC_CAP_MAX_NUM_EVT_ID);
if (len < min_len) goto length_error;
for (int xx = 0; ((xx < p_result->get_caps.count) &&
(xx < AVRC_CAP_MAX_NUM_EVT_ID));
xx++) {
BE_STREAM_TO_UINT8(p_result->get_caps.param.event_id[xx], p);
}
}
break;
case AVRC_PDU_LIST_PLAYER_APP_ATTR:
if (len == 0) {
p_result->list_app_attr.num_attr = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(p_result->list_app_attr.num_attr, p);
AVRC_TRACE_DEBUG("%s attr count = %d ", __func__,
p_result->list_app_attr.num_attr);
if (p_result->list_app_attr.num_attr > AVRC_MAX_APP_ATTR_SIZE) {
android_errorWriteLog(0x534e4554, "63146237");
p_result->list_app_attr.num_attr = AVRC_MAX_APP_ATTR_SIZE;
}
min_len += p_result->list_app_attr.num_attr;
if (len < min_len) goto length_error;
for (int xx = 0; xx < p_result->list_app_attr.num_attr; xx++) {
BE_STREAM_TO_UINT8(p_result->list_app_attr.attrs[xx], p);
}
break;
case AVRC_PDU_LIST_PLAYER_APP_VALUES:
if (len == 0) {
p_result->list_app_values.num_val = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(p_result->list_app_values.num_val, p);
if (p_result->list_app_values.num_val > AVRC_MAX_APP_ATTR_SIZE) {
android_errorWriteLog(0x534e4554, "78526423");
p_result->list_app_values.num_val = AVRC_MAX_APP_ATTR_SIZE;
}
AVRC_TRACE_DEBUG("%s value count = %d ", __func__,
p_result->list_app_values.num_val);
min_len += p_result->list_app_values.num_val;
if (len < min_len) goto length_error;
for (int xx = 0; xx < p_result->list_app_values.num_val; xx++) {
BE_STREAM_TO_UINT8(p_result->list_app_values.vals[xx], p);
}
break;
case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE: {
if (len == 0) {
p_result->get_cur_app_val.num_val = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(p_result->get_cur_app_val.num_val, p);
AVRC_TRACE_DEBUG("%s attr count = %d ", __func__,
p_result->get_cur_app_val.num_val);
if (p_result->get_cur_app_val.num_val > AVRC_MAX_APP_ATTR_SIZE) {
android_errorWriteLog(0x534e4554, "63146237");
p_result->get_cur_app_val.num_val = AVRC_MAX_APP_ATTR_SIZE;
}
min_len += p_result->get_cur_app_val.num_val * 2;
if (len < min_len) {
p_result->get_cur_app_val.num_val = 0;
goto length_error;
}
tAVRC_APP_SETTING* app_sett = (tAVRC_APP_SETTING*)osi_calloc(
p_result->get_cur_app_val.num_val * sizeof(tAVRC_APP_SETTING));
for (int xx = 0; xx < p_result->get_cur_app_val.num_val; xx++) {
BE_STREAM_TO_UINT8(app_sett[xx].attr_id, p);
BE_STREAM_TO_UINT8(app_sett[xx].attr_val, p);
}
p_result->get_cur_app_val.p_vals = app_sett;
} break;
case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT: {
uint8_t num_attrs;
if (len == 0) {
p_result->get_app_attr_txt.num_attr = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(num_attrs, p);
if (num_attrs > AVRC_MAX_APP_ATTR_SIZE) {
num_attrs = AVRC_MAX_APP_ATTR_SIZE;
}
AVRC_TRACE_DEBUG("%s attr count = %d ", __func__,
p_result->get_app_attr_txt.num_attr);
p_result->get_app_attr_txt.num_attr = num_attrs;
p_result->get_app_attr_txt.p_attrs = (tAVRC_APP_SETTING_TEXT*)osi_calloc(
num_attrs * sizeof(tAVRC_APP_SETTING_TEXT));
for (int xx = 0; xx < num_attrs; xx++) {
min_len += 4;
if (len < min_len) {
for (int j = 0; j < xx; j++) {
osi_free(p_result->get_app_attr_txt.p_attrs[j].p_str);
}
osi_free_and_reset((void**)&p_result->get_app_attr_txt.p_attrs);
p_result->get_app_attr_txt.num_attr = 0;
goto length_error;
}
BE_STREAM_TO_UINT8(p_result->get_app_attr_txt.p_attrs[xx].attr_id, p);
BE_STREAM_TO_UINT16(p_result->get_app_attr_txt.p_attrs[xx].charset_id,
p);
BE_STREAM_TO_UINT8(p_result->get_app_attr_txt.p_attrs[xx].str_len, p);
min_len += p_result->get_app_attr_txt.p_attrs[xx].str_len;
if (len < min_len) {
for (int j = 0; j < xx; j++) {
osi_free(p_result->get_app_attr_txt.p_attrs[j].p_str);
}
osi_free_and_reset((void**)&p_result->get_app_attr_txt.p_attrs);
p_result->get_app_attr_txt.num_attr = 0;
goto length_error;
}
if (p_result->get_app_attr_txt.p_attrs[xx].str_len != 0) {
uint8_t* p_str = (uint8_t*)osi_calloc(
p_result->get_app_attr_txt.p_attrs[xx].str_len);
BE_STREAM_TO_ARRAY(p, p_str,
p_result->get_app_attr_txt.p_attrs[xx].str_len);
p_result->get_app_attr_txt.p_attrs[xx].p_str = p_str;
} else {
p_result->get_app_attr_txt.p_attrs[xx].p_str = NULL;
}
}
} break;
case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT: {
uint8_t num_vals;
if (len == 0) {
p_result->get_app_val_txt.num_attr = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(num_vals, p);
if (num_vals > AVRC_MAX_APP_ATTR_SIZE) {
num_vals = AVRC_MAX_APP_ATTR_SIZE;
}
p_result->get_app_val_txt.num_attr = num_vals;
AVRC_TRACE_DEBUG("%s value count = %d ", __func__,
p_result->get_app_val_txt.num_attr);
p_result->get_app_val_txt.p_attrs = (tAVRC_APP_SETTING_TEXT*)osi_calloc(
num_vals * sizeof(tAVRC_APP_SETTING_TEXT));
for (int i = 0; i < num_vals; i++) {
min_len += 4;
if (len < min_len) {
for (int j = 0; j < i; j++) {
osi_free(p_result->get_app_val_txt.p_attrs[j].p_str);
}
osi_free_and_reset((void**)&p_result->get_app_val_txt.p_attrs);
p_result->get_app_val_txt.num_attr = 0;
goto length_error;
}
BE_STREAM_TO_UINT8(p_result->get_app_val_txt.p_attrs[i].attr_id, p);
BE_STREAM_TO_UINT16(p_result->get_app_val_txt.p_attrs[i].charset_id, p);
BE_STREAM_TO_UINT8(p_result->get_app_val_txt.p_attrs[i].str_len, p);
min_len += p_result->get_app_val_txt.p_attrs[i].str_len;
if (len < min_len) {
for (int j = 0; j < i; j++) {
osi_free(p_result->get_app_val_txt.p_attrs[j].p_str);
}
osi_free_and_reset((void**)&p_result->get_app_val_txt.p_attrs);
p_result->get_app_val_txt.num_attr = 0;
goto length_error;
}
if (p_result->get_app_val_txt.p_attrs[i].str_len != 0) {
uint8_t* p_str = (uint8_t*)osi_calloc(
p_result->get_app_val_txt.p_attrs[i].str_len);
BE_STREAM_TO_ARRAY(p, p_str,
p_result->get_app_val_txt.p_attrs[i].str_len);
p_result->get_app_val_txt.p_attrs[i].p_str = p_str;
} else {
p_result->get_app_val_txt.p_attrs[i].p_str = NULL;
}
}
} break;
case AVRC_PDU_SET_PLAYER_APP_VALUE:
/* nothing comes as part of this rsp */
break;
case AVRC_PDU_GET_ELEMENT_ATTR: {
uint8_t num_attrs;
if (len <= 0) {
p_result->get_attrs.num_attrs = 0;
break;
}
min_len += 1;
BE_STREAM_TO_UINT8(num_attrs, p);
p_result->get_attrs.num_attrs = num_attrs;
if (num_attrs) {
tAVRC_ATTR_ENTRY* p_attrs =
(tAVRC_ATTR_ENTRY*)osi_calloc(num_attrs * sizeof(tAVRC_ATTR_ENTRY));
for (int i = 0; i < num_attrs; i++) {
min_len += 8;
if (len < min_len) {
for (int j = 0; j < i; j++) {
osi_free(p_attrs[j].name.p_str);
}
osi_free(p_attrs);
p_result->get_attrs.num_attrs = 0;
goto length_error;
}
BE_STREAM_TO_UINT32(p_attrs[i].attr_id, p);
BE_STREAM_TO_UINT16(p_attrs[i].name.charset_id, p);
BE_STREAM_TO_UINT16(p_attrs[i].name.str_len, p);
min_len += p_attrs[i].name.str_len;
if (len < min_len) {
for (int j = 0; j < i; j++) {
osi_free(p_attrs[j].name.p_str);
}
osi_free(p_attrs);
p_result->get_attrs.num_attrs = 0;
goto length_error;
}
if (p_attrs[i].name.str_len > 0) {
p_attrs[i].name.p_str =
(uint8_t*)osi_calloc(p_attrs[i].name.str_len);
BE_STREAM_TO_ARRAY(p, p_attrs[i].name.p_str,
p_attrs[i].name.str_len);
} else {
p_attrs[i].name.p_str = NULL;
}
}
p_result->get_attrs.p_attrs = p_attrs;
}
} break;
case AVRC_PDU_GET_PLAY_STATUS:
if (len == 0) {
break;
}
min_len += 9;
if (len < min_len) goto length_error;
BE_STREAM_TO_UINT32(p_result->get_play_status.song_len, p);
BE_STREAM_TO_UINT32(p_result->get_play_status.song_pos, p);
BE_STREAM_TO_UINT8(p_result->get_play_status.status, p);
break;
case AVRC_PDU_SET_ADDRESSED_PLAYER:
if (len != 1) {
AVRC_TRACE_ERROR("%s pdu: %d len %d", __func__, p_result->pdu, len);
return AVRC_STS_BAD_CMD;
}
BE_STREAM_TO_UINT8(p_result->rsp.status, p);
break;
default:
return AVRC_STS_BAD_CMD;
}
return AVRC_STS_NO_ERROR;
length_error:
android_errorWriteLog(0x534e4554, "111450417");
AVRC_TRACE_WARNING("%s: invalid parameter length %d: must be at least %d",
__func__, len, min_len);
return AVRC_STS_INTERNAL_ERR;
}
/*******************************************************************************
*
* Function AVRC_Ctrl_ParsResponse
*
* Description This function is a parse response for AVRCP Controller.
*
* 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_Ctrl_ParsResponse(tAVRC_MSG* p_msg, tAVRC_RESPONSE* p_result,
uint8_t* p_buf, uint16_t* buf_len) {
tAVRC_STS status = AVRC_STS_INTERNAL_ERR;
if (p_msg && p_result) {
switch (p_msg->hdr.opcode) {
case AVRC_OP_VENDOR: /* 0x00 Vendor-dependent commands */
status =
avrc_ctrl_pars_vendor_rsp(&p_msg->vendor, p_result, p_buf, buf_len);
break;
case AVRC_OP_BROWSE: /* 0xff Browse commands */
status = avrc_pars_browse_rsp(&p_msg->browse, p_result);
break;
default:
AVRC_TRACE_ERROR("%s unknown opcode:0x%x", __func__, p_msg->hdr.opcode);
break;
}
p_result->rsp.opcode = p_msg->hdr.opcode;
p_result->rsp.status = status;
}
return status;
}
/*******************************************************************************
*
* Function AVRC_ParsResponse
*
* Description This function is a superset of AVRC_ParsMetadata to parse
* the response.
*
* 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_ParsResponse(tAVRC_MSG* p_msg, tAVRC_RESPONSE* p_result,
UNUSED_ATTR uint8_t* p_buf,
UNUSED_ATTR uint16_t buf_len) {
tAVRC_STS status = AVRC_STS_INTERNAL_ERR;
uint16_t id;
if (p_msg && p_result) {
switch (p_msg->hdr.opcode) {
case AVRC_OP_VENDOR: /* 0x00 Vendor-dependent commands */
status = avrc_pars_vendor_rsp(&p_msg->vendor, p_result);
break;
case AVRC_OP_PASS_THRU: /* 0x7C panel subunit opcode */
status = avrc_pars_pass_thru(&p_msg->pass, &id);
if (status == AVRC_STS_NO_ERROR) {
p_result->pdu = (uint8_t)id;
}
break;
default:
AVRC_TRACE_ERROR("%s unknown opcode:0x%x", __func__, p_msg->hdr.opcode);
break;
}
p_result->rsp.opcode = p_msg->hdr.opcode;
p_result->rsp.status = status;
}
return status;
}