/******************************************************************************
*
* Copyright (C) 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 "bt_common.h"
#include "avrc_api.h"
#include "avrc_defs.h"
#include "avrc_int.h"
/*****************************************************************************
** Global data
*****************************************************************************/
#if (AVRC_METADATA_INCLUDED == TRUE)
/*******************************************************************************
**
** Function avrc_bld_next_cmd
**
** Description This function builds the Request Continue or Abort command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_next_cmd (tAVRC_NEXT_CMD *p_cmd, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_next_cmd");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed lenth 1 - pdu_id (1) */
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data, p_cmd->target_pdu);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*****************************************************************************
** the following commands are introduced in AVRCP 1.4
*****************************************************************************/
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
/*******************************************************************************
**
** Function avrc_bld_set_abs_volume_cmd
**
** Description This function builds the Set Absolute Volume command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_set_abs_volume_cmd (tAVRC_SET_VOLUME_CMD *p_cmd, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_set_abs_volume_cmd");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed lenth 1 - volume (1) */
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data, (AVRC_MAX_VOLUME & p_cmd->volume));
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_register_notifn
**
** Description This function builds the register notification.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_register_notifn(BT_HDR * p_pkt, UINT8 event_id, UINT32 event_param)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_register_notifn");
/* get the existing length, if any, and also the num attributes */
// Set the notify value
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 5 -*/
UINT16_TO_BE_STREAM(p_data, 5);
UINT8_TO_BE_STREAM(p_data,event_id);
UINT32_TO_BE_STREAM(p_data, event_param);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
#endif
#if (AVRC_CTLR_INCLUDED == TRUE)
/*******************************************************************************
**
** Function avrc_bld_get_capability_cmd
**
** Description This function builds the get capability command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_capability_cmd(BT_HDR * p_pkt, UINT8 cap_id)
{
AVRC_TRACE_API("avrc_bld_get_capability_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 1 -*/
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data,cap_id);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_list_player_app_attr_cmd
**
** Description This function builds the list player app attrib command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_list_player_app_attr_cmd(BT_HDR * p_pkt)
{
AVRC_TRACE_API("avrc_bld_list_player_app_attr_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 1 -*/
UINT16_TO_BE_STREAM(p_data, 0);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_list_player_app_values_cmd
**
** Description This function builds the list player app values command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_list_player_app_values_cmd(BT_HDR * p_pkt, UINT8 attrib_id)
{
AVRC_TRACE_API("avrc_bld_list_player_app_values_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 1 -*/
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data,attrib_id);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_current_player_app_values_cmd
**
** Description This function builds the get current player app setting values command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_current_player_app_values_cmd(
BT_HDR * p_pkt, UINT8 num_attrib_id, UINT8* attrib_ids)
{
AVRC_TRACE_API("avrc_bld_get_current_player_app_values_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
UINT8 param_len = num_attrib_id + 1; // 1 additional to hold num attributes feild
/* add length -*/
UINT16_TO_BE_STREAM(p_data, param_len);
UINT8_TO_BE_STREAM(p_data,num_attrib_id);
for(int count = 0; count < num_attrib_id; count ++)
{
UINT8_TO_BE_STREAM(p_data,attrib_ids[count]);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_set_current_player_app_values_cmd
**
** Description This function builds the set current player app setting values command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_set_current_player_app_values_cmd(BT_HDR * p_pkt, UINT8 num_attrib_id, tAVRC_APP_SETTING* p_val)
{
AVRC_TRACE_API("avrc_bld_set_current_player_app_values_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* we have to store attrib- value pair
* 1 additional to store num elements
*/
UINT8 param_len = (2*num_attrib_id) + 1;
/* add length */
UINT16_TO_BE_STREAM(p_data, param_len);
UINT8_TO_BE_STREAM(p_data,num_attrib_id);
for(int count = 0; count < num_attrib_id; count ++)
{
UINT8_TO_BE_STREAM(p_data,p_val[count].attr_id);
UINT8_TO_BE_STREAM(p_data,p_val[count].attr_val);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_player_app_setting_attr_text_cmd
**
** Description This function builds the get player app setting attribute text command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_player_app_setting_attr_text_cmd (BT_HDR * p_pkt, tAVRC_GET_APP_ATTR_TXT_CMD *p_cmd)
{
AVRC_TRACE_API("%s", __FUNCTION__);
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
UINT8 param_len = p_cmd->num_attr + 1;
/* add length */
UINT16_TO_BE_STREAM(p_data, param_len);
UINT8_TO_BE_STREAM(p_data, p_cmd->num_attr);
for(int count = 0; count < p_cmd->num_attr; count++)
{
UINT8_TO_BE_STREAM(p_data, p_cmd->attrs[count]);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_player_app_setting_value_text_cmd
**
** Description This function builds the get player app setting value text command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_player_app_setting_value_text_cmd (BT_HDR * p_pkt, tAVRC_GET_APP_VAL_TXT_CMD *p_cmd)
{
AVRC_TRACE_API("%s", __FUNCTION__);
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
UINT8 param_len = p_cmd->num_val + 1;
/* add length */
UINT16_TO_BE_STREAM(p_data, param_len);
UINT8_TO_BE_STREAM(p_data, p_cmd->num_val);
for(int count = 0; count < p_cmd->num_val; count++)
{
UINT8_TO_BE_STREAM(p_data, p_cmd->vals[count]);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_element_attr_cmd
**
** Description This function builds the get element attribute command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_element_attr_cmd(BT_HDR * p_pkt, UINT8 num_attrib, UINT32* attrib_ids)
{
AVRC_TRACE_API("avrc_bld_get_element_attr_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* we have to store attrib- value pair
* 1 additional to store num elements
*/
UINT8 param_len = (4*num_attrib) + 9;
/* add length */
UINT16_TO_BE_STREAM(p_data, param_len);
/* 8 bytes of identifier as 0 (playing)*/
UINT32_TO_BE_STREAM(p_data,0);
UINT32_TO_BE_STREAM(p_data,0);
UINT8_TO_BE_STREAM(p_data,num_attrib);
for(int count = 0; count < num_attrib; count ++)
{
UINT32_TO_BE_STREAM(p_data,attrib_ids[count]);
}
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_play_status_cmd
**
** Description This function builds the get play status command.
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_play_status_cmd(BT_HDR * p_pkt)
{
AVRC_TRACE_API("avrc_bld_list_player_app_attr_cmd");
UINT8 *p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
UINT8 *p_data = p_start + 2; /* pdu + rsvd */
/* add fixed length 1 -*/
UINT16_TO_BE_STREAM(p_data, 0);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
#endif
/*******************************************************************************
**
** Function avrc_bld_init_cmd_buffer
**
** Description This function initializes the command buffer based on PDU
**
** Returns NULL, if no GKI buffer or failure to build the message.
** Otherwise, the GKI buffer that contains the initialized message.
**
*******************************************************************************/
static BT_HDR *avrc_bld_init_cmd_buffer(tAVRC_COMMAND *p_cmd)
{
UINT8 opcode = avrc_opcode_from_pdu(p_cmd->pdu);
AVRC_TRACE_API("avrc_bld_init_cmd_buffer: pdu=%x, opcode=%x", p_cmd->pdu, opcode);
UINT16 offset = 0;
switch (opcode)
{
case AVRC_OP_PASS_THRU:
offset = AVRC_MSG_PASS_THRU_OFFSET;
break;
case AVRC_OP_VENDOR:
offset = AVRC_MSG_VENDOR_OFFSET;
break;
}
/* allocate and initialize the buffer */
BT_HDR *p_pkt = (BT_HDR *)osi_malloc(AVRC_META_CMD_BUF_SIZE);
UINT8 *p_data, *p_start;
p_pkt->layer_specific = AVCT_DATA_CTRL;
p_pkt->event = opcode;
p_pkt->offset = offset;
p_data = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_start = p_data;
/* pass thru - group navigation - has a two byte op_id, so dont do it here */
if (opcode != AVRC_OP_PASS_THRU)
*p_data++ = p_cmd->pdu;
switch (opcode) {
case AVRC_OP_VENDOR:
/* reserved 0, packet_type 0 */
UINT8_TO_BE_STREAM(p_data, 0);
/* continue to the next "case to add length */
/* add fixed lenth - 0 */
UINT16_TO_BE_STREAM(p_data, 0);
break;
}
p_pkt->len = (p_data - p_start);
p_cmd->cmd.opcode = opcode;
return p_pkt;
}
/*******************************************************************************
**
** Function AVRC_BldCommand
**
** Description This function builds the given AVRCP command to the given
** GKI buffer
**
** Returns AVRC_STS_NO_ERROR, if the command is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
tAVRC_STS AVRC_BldCommand( tAVRC_COMMAND *p_cmd, BT_HDR **pp_pkt)
{
tAVRC_STS status = AVRC_STS_BAD_PARAM;
BOOLEAN alloc = FALSE;
AVRC_TRACE_API("AVRC_BldCommand: pdu=%x status=%x", p_cmd->cmd.pdu, p_cmd->cmd.status);
if (!p_cmd || !pp_pkt)
{
AVRC_TRACE_API("AVRC_BldCommand. Invalid parameters passed. p_cmd=%p, pp_pkt=%p",
p_cmd, pp_pkt);
return AVRC_STS_BAD_PARAM;
}
if (*pp_pkt == NULL)
{
if ((*pp_pkt = avrc_bld_init_cmd_buffer(p_cmd)) == NULL)
{
AVRC_TRACE_API("AVRC_BldCommand: Failed to initialize command buffer");
return AVRC_STS_INTERNAL_ERR;
}
alloc = TRUE;
}
status = AVRC_STS_NO_ERROR;
BT_HDR* p_pkt = *pp_pkt;
switch (p_cmd->pdu)
{
case AVRC_PDU_REQUEST_CONTINUATION_RSP: /* 0x40 */
status = avrc_bld_next_cmd(&p_cmd->continu, p_pkt);
break;
case AVRC_PDU_ABORT_CONTINUATION_RSP: /* 0x41 */
status = avrc_bld_next_cmd(&p_cmd->abort, p_pkt);
break;
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
status = avrc_bld_set_abs_volume_cmd(&p_cmd->volume, p_pkt);
break;
#endif
case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
#if (AVRC_ADV_CTRL_INCLUDED == TRUE)
status=avrc_bld_register_notifn(p_pkt,p_cmd->reg_notif.event_id,p_cmd->reg_notif.param);
#endif
break;
#if (AVRC_CTLR_INCLUDED == TRUE)
case AVRC_PDU_GET_CAPABILITIES:
status = avrc_bld_get_capability_cmd(p_pkt, p_cmd->get_caps.capability_id);
break;
case AVRC_PDU_LIST_PLAYER_APP_ATTR:
status = avrc_bld_list_player_app_attr_cmd(p_pkt);
break;
case AVRC_PDU_LIST_PLAYER_APP_VALUES:
status = avrc_bld_list_player_app_values_cmd(p_pkt,p_cmd->list_app_values.attr_id);
break;
case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
status = avrc_bld_get_current_player_app_values_cmd(p_pkt,
p_cmd->get_cur_app_val.num_attr,p_cmd->get_cur_app_val.attrs);
break;
case AVRC_PDU_SET_PLAYER_APP_VALUE:
status = avrc_bld_set_current_player_app_values_cmd(p_pkt,
p_cmd->set_app_val.num_val,p_cmd->set_app_val.p_vals);
break;
case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
avrc_bld_get_player_app_setting_attr_text_cmd(p_pkt, &p_cmd->get_app_attr_txt);
break;
case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
avrc_bld_get_player_app_setting_value_text_cmd(p_pkt, &p_cmd->get_app_val_txt);
break;
case AVRC_PDU_GET_ELEMENT_ATTR:
status = avrc_bld_get_element_attr_cmd(p_pkt,
p_cmd->get_elem_attrs.num_attr,p_cmd->get_elem_attrs.attrs);
break;
case AVRC_PDU_GET_PLAY_STATUS:
status = avrc_bld_get_play_status_cmd(p_pkt);
break;
#endif
}
if (alloc && (status != AVRC_STS_NO_ERROR) )
{
osi_free(p_pkt);
*pp_pkt = NULL;
}
AVRC_TRACE_API("AVRC_BldCommand: returning %d", status);
return status;
}
#endif /* (AVRC_METADATA_INCLUDED == TRUE) */