mirror of
https://github.com/espressif/esp-idf.git
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312 lines
11 KiB
C
312 lines
11 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2003-2013 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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#include <string.h>
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#include "common/bt_target.h"
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#include "stack/avrc_api.h"
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#include "stack/avrc_defs.h"
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#include "avrc_int.h"
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#if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE)
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/*****************************************************************************
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** Global data
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*****************************************************************************/
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#if (AVRC_METADATA_INCLUDED == TRUE)
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/*******************************************************************************
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**
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** Function avrc_pars_vendor_cmd
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**
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** Description This function parses the vendor specific commands defined by
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** Bluetooth SIG
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**
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** Returns AVRC_STS_NO_ERROR, if the message in p_data is parsed successfully.
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** Otherwise, the error code defined by AVRCP 1.4
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**
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*******************************************************************************/
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static tAVRC_STS avrc_pars_vendor_cmd(tAVRC_MSG_VENDOR *p_msg, tAVRC_COMMAND *p_result,
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UINT8 *p_buf, UINT16 buf_len)
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{
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tAVRC_STS status = AVRC_STS_NO_ERROR;
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UINT8 *p;
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UINT16 len;
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UINT8 xx, yy;
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UINT8 *p_u8;
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UINT16 *p_u16;
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UINT32 u32, u32_2, *p_u32;
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tAVRC_APP_SETTING *p_app_set;
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UINT16 size_needed;
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/* Check the vendor data */
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if (p_msg->vendor_len == 0) {
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return AVRC_STS_NO_ERROR;
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}
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if (p_msg->p_vendor_data == NULL) {
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return AVRC_STS_INTERNAL_ERR;
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}
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p = p_msg->p_vendor_data;
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p_result->pdu = *p++;
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AVRC_TRACE_DEBUG("avrc_pars_vendor_cmd() pdu:0x%x", p_result->pdu);
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if (!AVRC_IsValidAvcType (p_result->pdu, p_msg->hdr.ctype)) {
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AVRC_TRACE_DEBUG("avrc_pars_vendor_cmd() detects wrong AV/C type!");
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status = AVRC_STS_BAD_CMD;
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}
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p++; /* skip the reserved byte */
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BE_STREAM_TO_UINT16 (len, p);
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if ((len + 4) != (p_msg->vendor_len)) {
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status = AVRC_STS_INTERNAL_ERR;
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}
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if (status != AVRC_STS_NO_ERROR) {
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return status;
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}
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switch (p_result->pdu) {
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case AVRC_PDU_GET_CAPABILITIES: /* 0x10 */
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p_result->get_caps.capability_id = *p++;
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if (!AVRC_IS_VALID_CAP_ID(p_result->get_caps.capability_id)) {
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status = AVRC_STS_BAD_PARAM;
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} else if (len != 1) {
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status = AVRC_STS_INTERNAL_ERR;
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}
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break;
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case AVRC_PDU_LIST_PLAYER_APP_ATTR: /* 0x11 */
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/* no additional parameters */
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if (len != 0) {
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status = AVRC_STS_INTERNAL_ERR;
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}
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break;
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case AVRC_PDU_LIST_PLAYER_APP_VALUES: /* 0x12 */
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p_result->list_app_values.attr_id = *p++;
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if (!AVRC_IS_VALID_ATTRIBUTE(p_result->list_app_values.attr_id)) {
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status = AVRC_STS_BAD_PARAM;
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} else if (len != 1) {
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status = AVRC_STS_INTERNAL_ERR;
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}
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break;
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case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE: /* 0x13 */
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case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT: /* 0x15 */
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BE_STREAM_TO_UINT8 (p_result->get_cur_app_val.num_attr, p);
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if (len != (p_result->get_cur_app_val.num_attr + 1)) {
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status = AVRC_STS_INTERNAL_ERR;
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break;
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}
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p_u8 = p_result->get_cur_app_val.attrs;
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for (xx = 0, yy = 0; xx < p_result->get_cur_app_val.num_attr; xx++) {
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/* only report the valid player app attributes */
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if (AVRC_IsValidPlayerAttr(*p)) {
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p_u8[yy++] = *p;
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}
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p++;
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}
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p_result->get_cur_app_val.num_attr = yy;
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if (yy == 0) {
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status = AVRC_STS_BAD_PARAM;
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}
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break;
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case AVRC_PDU_SET_PLAYER_APP_VALUE: /* 0x14 */
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BE_STREAM_TO_UINT8 (p_result->set_app_val.num_val, p);
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size_needed = sizeof(tAVRC_APP_SETTING);
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if (p_buf && (len == ((p_result->set_app_val.num_val << 1) + 1))) {
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p_result->set_app_val.p_vals = (tAVRC_APP_SETTING *)p_buf;
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p_app_set = p_result->set_app_val.p_vals;
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for (xx = 0; ((xx < p_result->set_app_val.num_val) && (buf_len > size_needed)); xx++) {
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p_app_set[xx].attr_id = *p++;
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p_app_set[xx].attr_val = *p++;
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if (!avrc_is_valid_player_attrib_value(p_app_set[xx].attr_id, p_app_set[xx].attr_val)) {
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status = AVRC_STS_BAD_PARAM;
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}
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}
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if (xx != p_result->set_app_val.num_val) {
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AVRC_TRACE_ERROR("AVRC_PDU_SET_PLAYER_APP_VALUE not enough room:%d orig num_val:%d",
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xx, p_result->set_app_val.num_val);
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p_result->set_app_val.num_val = xx;
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}
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} else {
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AVRC_TRACE_ERROR("AVRC_PDU_SET_PLAYER_APP_VALUE NULL decode buffer or bad len");
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status = AVRC_STS_INTERNAL_ERR;
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}
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break;
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case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:/* 0x16 */
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if (len < 3) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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BE_STREAM_TO_UINT8 (p_result->get_app_val_txt.attr_id, p);
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if (!AVRC_IS_VALID_ATTRIBUTE(p_result->get_app_val_txt.attr_id)) {
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status = AVRC_STS_BAD_PARAM;
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} else {
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BE_STREAM_TO_UINT8 (p_result->get_app_val_txt.num_val, p);
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if ( (len - 2/* attr_id & num_val */) != p_result->get_app_val_txt.num_val) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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p_u8 = p_result->get_app_val_txt.vals;
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for (xx = 0; xx < p_result->get_app_val_txt.num_val; xx++) {
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p_u8[xx] = *p++;
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if (!avrc_is_valid_player_attrib_value(p_result->get_app_val_txt.attr_id,
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p_u8[xx])) {
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status = AVRC_STS_BAD_PARAM;
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break;
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}
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}
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}
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}
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}
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break;
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case AVRC_PDU_INFORM_DISPLAY_CHARSET: /* 0x17 */
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if (len < 3) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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BE_STREAM_TO_UINT8 (p_result->inform_charset.num_id, p);
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if ( (len - 1/* num_id */) != p_result->inform_charset.num_id * 2) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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p_u16 = p_result->inform_charset.charsets;
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if (p_result->inform_charset.num_id > AVRC_MAX_CHARSET_SIZE) {
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p_result->inform_charset.num_id = AVRC_MAX_CHARSET_SIZE;
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}
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for (xx = 0; xx < p_result->inform_charset.num_id; xx++) {
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BE_STREAM_TO_UINT16 (p_u16[xx], p);
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}
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}
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}
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break;
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case AVRC_PDU_INFORM_BATTERY_STAT_OF_CT:/* 0x18 */
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if (len != 1) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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p_result->inform_battery_status.battery_status = *p++;
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if (!AVRC_IS_VALID_BATTERY_STATUS(p_result->inform_battery_status.battery_status)) {
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status = AVRC_STS_BAD_PARAM;
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}
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}
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break;
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case AVRC_PDU_GET_ELEMENT_ATTR: /* 0x20 */
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if (len < 9) { /* UID/8 and num_attr/1 */
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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BE_STREAM_TO_UINT32 (u32, p);
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BE_STREAM_TO_UINT32 (u32_2, p);
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if (u32 == 0 && u32_2 == 0) {
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BE_STREAM_TO_UINT8 (p_result->get_elem_attrs.num_attr, p);
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if ( (len - 9/* UID/8 and num_attr/1 */) != (p_result->get_elem_attrs.num_attr * 4)) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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p_u32 = p_result->get_elem_attrs.attrs;
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if (p_result->get_elem_attrs.num_attr > AVRC_MAX_ELEM_ATTR_SIZE) {
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p_result->get_elem_attrs.num_attr = AVRC_MAX_ELEM_ATTR_SIZE;
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}
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for (xx = 0; xx < p_result->get_elem_attrs.num_attr; xx++) {
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BE_STREAM_TO_UINT32 (p_u32[xx], p);
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}
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}
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} else {
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status = AVRC_STS_NOT_FOUND;
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}
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}
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break;
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case AVRC_PDU_GET_PLAY_STATUS: /* 0x30 */
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/* no additional parameters */
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if (len != 0) {
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status = AVRC_STS_INTERNAL_ERR;
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}
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break;
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case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
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if (len != 5) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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BE_STREAM_TO_UINT8 (p_result->reg_notif.event_id, p);
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BE_STREAM_TO_UINT32 (p_result->reg_notif.param, p);
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}
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break;
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case AVRC_PDU_SET_ABSOLUTE_VOLUME: {
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if (len != 1) {
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status = AVRC_STS_INTERNAL_ERR;
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} else {
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BE_STREAM_TO_UINT8 (p_result->volume.volume, p);
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p_result->volume.volume &= 0x7F; // remove the top bit
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}
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break;
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}
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/* case AVRC_PDU_REQUEST_CONTINUATION_RSP: 0x40 */
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/* case AVRC_PDU_ABORT_CONTINUATION_RSP: 0x41 */
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default:
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status = AVRC_STS_BAD_CMD;
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break;
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}
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return status;
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}
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/*******************************************************************************
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**
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** Function AVRC_ParsCommand
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**
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** Description This function is a superset of AVRC_ParsMetadata to parse the command.
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**
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** Returns AVRC_STS_NO_ERROR, if the message in p_data is parsed successfully.
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** Otherwise, the error code defined by AVRCP 1.4
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**
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*******************************************************************************/
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tAVRC_STS AVRC_ParsCommand (tAVRC_MSG *p_msg, tAVRC_COMMAND *p_result, UINT8 *p_buf, UINT16 buf_len)
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{
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tAVRC_STS status = AVRC_STS_INTERNAL_ERR;
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UINT16 id;
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if (p_msg && p_result) {
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switch (p_msg->hdr.opcode) {
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case AVRC_OP_VENDOR: /* 0x00 Vendor-dependent commands */
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status = avrc_pars_vendor_cmd(&p_msg->vendor, p_result, p_buf, buf_len);
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break;
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case AVRC_OP_PASS_THRU: /* 0x7C panel subunit opcode */
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status = avrc_pars_pass_thru(&p_msg->pass, &id);
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if (status == AVRC_STS_NO_ERROR) {
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p_result->pdu = (UINT8)id;
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}
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break;
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default:
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AVRC_TRACE_ERROR("AVRC_ParsCommand() unknown opcode:0x%x", p_msg->hdr.opcode);
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break;
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}
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p_result->cmd.opcode = p_msg->hdr.opcode;
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p_result->cmd.status = status;
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}
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AVRC_TRACE_DEBUG("AVRC_ParsCommand() return status:0x%x", status);
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return status;
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}
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#endif /* (AVRC_METADATA_INCLUDED == TRUE) */
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#endif /* #if (defined(AVRC_INCLUDED) && AVRC_INCLUDED == TRUE) */
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