/******************************************************************************
*
* Copyright (C) 2003-2013 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 "gki.h"
#include "avrc_api.h"
#include "avrc_defs.h"
#include "avrc_int.h"
#include "bt_utils.h"
/*****************************************************************************
** Global data
*****************************************************************************/
#if (AVRC_METADATA_INCLUDED == TRUE)
/*******************************************************************************
**
** Function avrc_bld_get_capability_rsp
**
** Description This function builds the Get Capability response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_capability_rsp (tAVRC_GET_CAPS_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_count;
UINT16 len = 0;
UINT8 xx;
UINT32 *p_company_id;
UINT8 *p_event_id;
tAVRC_STS status = AVRC_STS_NO_ERROR;
if (!(AVRC_IS_VALID_CAP_ID(p_rsp->capability_id)))
{
AVRC_TRACE_ERROR("avrc_bld_get_capability_rsp bad parameter. p_rsp: %x", p_rsp);
status = AVRC_STS_BAD_PARAM;
return status;
}
AVRC_TRACE_API("avrc_bld_get_capability_rsp");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
BE_STREAM_TO_UINT16(len, p_data);
UINT8_TO_BE_STREAM(p_data, p_rsp->capability_id);
p_count = p_data;
if (len == 0)
{
*p_count = p_rsp->count;
p_data++;
len = 2; /* move past the capability_id and count */
}
else
{
p_data = p_start + p_pkt->len;
*p_count += p_rsp->count;
}
if (p_rsp->capability_id == AVRC_CAP_COMPANY_ID)
{
p_company_id = p_rsp->param.company_id;
for (xx=0; xx< p_rsp->count; xx++)
{
UINT24_TO_BE_STREAM(p_data, p_company_id[xx]);
}
len += p_rsp->count * 3;
}
else
{
p_event_id = p_rsp->param.event_id;
*p_count = 0;
for (xx=0; xx< p_rsp->count; xx++)
{
if (AVRC_IS_VALID_EVENT_ID(p_event_id[xx]))
{
(*p_count)++;
UINT8_TO_BE_STREAM(p_data, p_event_id[xx]);
}
}
len += (*p_count);
}
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
status = AVRC_STS_NO_ERROR;
return status;
}
/*******************************************************************************
**
** Function avrc_bld_list_app_settings_attr_rsp
**
** Description This function builds the List Application Settings Attribute
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_list_app_settings_attr_rsp (tAVRC_LIST_APP_ATTR_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_num;
UINT16 len = 0;
UINT8 xx;
AVRC_TRACE_API("avrc_bld_list_app_settings_attr_rsp");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
BE_STREAM_TO_UINT16(len, p_data);
p_num = p_data;
if (len == 0)
{
/* first time initialize the attribute count */
*p_num = 0;
p_data++;
}
else
{
p_data = p_start + p_pkt->len;
}
for (xx=0; xx<p_rsp->num_attr; xx++)
{
if(AVRC_IsValidPlayerAttr(p_rsp->attrs[xx]))
{
(*p_num)++;
UINT8_TO_BE_STREAM(p_data, p_rsp->attrs[xx]);
}
}
len = *p_num + 1;
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_list_app_settings_values_rsp
**
** Description This function builds the List Application Setting Values
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_list_app_settings_values_rsp (tAVRC_LIST_APP_VALUES_RSP *p_rsp,
BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_num;
UINT8 xx;
UINT16 len;
AVRC_TRACE_API("avrc_bld_list_app_settings_values_rsp");
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
/* get the existing length, if any, and also the num attributes */
BE_STREAM_TO_UINT16(len, p_data);
p_num = p_data;
/* first time initialize the attribute count */
if (len == 0)
{
*p_num = p_rsp->num_val;
p_data++;
}
else
{
p_data = p_start + p_pkt->len;
*p_num += p_rsp->num_val;
}
for (xx=0; xx<p_rsp->num_val; xx++)
{
UINT8_TO_BE_STREAM(p_data, p_rsp->vals[xx]);
}
len = *p_num + 1;
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_cur_app_setting_value_rsp
**
** Description This function builds the Get Current Application Setting Value
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_cur_app_setting_value_rsp (tAVRC_GET_CUR_APP_VALUE_RSP *p_rsp,
BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_count;
UINT16 len;
UINT8 xx;
if (!p_rsp->p_vals)
{
AVRC_TRACE_ERROR("avrc_bld_get_cur_app_setting_value_rsp NULL parameter");
return AVRC_STS_BAD_PARAM;
}
AVRC_TRACE_API("avrc_bld_get_cur_app_setting_value_rsp");
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
BE_STREAM_TO_UINT16(len, p_data);
p_count = p_data;
if (len == 0)
{
/* first time initialize the attribute count */
*p_count = 0;
p_data++;
}
else
{
p_data = p_start + p_pkt->len;
}
for (xx=0; xx<p_rsp->num_val; xx++)
{
if (avrc_is_valid_player_attrib_value(p_rsp->p_vals[xx].attr_id, p_rsp->p_vals[xx].attr_val))
{
(*p_count)++;
UINT8_TO_BE_STREAM(p_data, p_rsp->p_vals[xx].attr_id);
UINT8_TO_BE_STREAM(p_data, p_rsp->p_vals[xx].attr_val);
}
}
len = ((*p_count) << 1) + 1;
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_set_app_setting_value_rsp
**
** Description This function builds the Set Application Setting Value
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_set_app_setting_value_rsp (tAVRC_RSP *p_rsp, BT_HDR *p_pkt)
{
UNUSED(p_rsp);
UNUSED(p_pkt);
/* nothing to be added. */
AVRC_TRACE_API("avrc_bld_set_app_setting_value_rsp");
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_app_setting_text_rsp
**
** Description This function builds the Get Application Settings Attribute Text
** or Get Application Settings Value Text response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_app_setting_text_rsp (tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_count;
UINT16 len, len_left;
UINT8 xx;
tAVRC_STS sts = AVRC_STS_NO_ERROR;
UINT8 num_added = 0;
if (!p_rsp->p_attrs)
{
AVRC_TRACE_ERROR("avrc_bld_app_setting_text_rsp NULL parameter");
return AVRC_STS_BAD_PARAM;
}
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
len_left = GKI_get_buf_size(p_pkt) - BT_HDR_SIZE - p_pkt->offset - p_pkt->len;
BE_STREAM_TO_UINT16(len, p_data);
p_count = p_data;
if (len == 0)
{
*p_count = 0;
p_data++;
}
else
{
p_data = p_start + p_pkt->len;
}
for (xx=0; xx<p_rsp->num_attr; xx++)
{
if (len_left < (p_rsp->p_attrs[xx].str_len + 4))
{
AVRC_TRACE_ERROR("avrc_bld_app_setting_text_rsp out of room (str_len:%d, left:%d)",
xx, p_rsp->p_attrs[xx].str_len, len_left);
p_rsp->num_attr = num_added;
sts = AVRC_STS_INTERNAL_ERR;
break;
}
if ( !p_rsp->p_attrs[xx].str_len || !p_rsp->p_attrs[xx].p_str )
{
AVRC_TRACE_ERROR("avrc_bld_app_setting_text_rsp NULL attr text[%d]", xx);
continue;
}
UINT8_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].attr_id);
UINT16_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].charset_id);
UINT8_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].str_len);
ARRAY_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].p_str, p_rsp->p_attrs[xx].str_len);
(*p_count)++;
num_added++;
}
len = p_data - p_count;
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return sts;
}
/*******************************************************************************
**
** Function avrc_bld_get_app_setting_attr_text_rsp
**
** Description This function builds the Get Application Setting Attribute Text
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_app_setting_attr_text_rsp (tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp,
BT_HDR *p_pkt)
{
AVRC_TRACE_API("avrc_bld_get_app_setting_attr_text_rsp");
return avrc_bld_app_setting_text_rsp(p_rsp, p_pkt);
}
/*******************************************************************************
**
** Function avrc_bld_get_app_setting_value_text_rsp
**
** Description This function builds the Get Application Setting Value Text
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_app_setting_value_text_rsp (tAVRC_GET_APP_ATTR_TXT_RSP *p_rsp,
BT_HDR *p_pkt)
{
AVRC_TRACE_API("avrc_bld_get_app_setting_value_text_rsp");
return avrc_bld_app_setting_text_rsp(p_rsp, p_pkt);
}
/*******************************************************************************
**
** Function avrc_bld_inform_charset_rsp
**
** Description This function builds the Inform Displayable Character Set
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_inform_charset_rsp (tAVRC_RSP *p_rsp, BT_HDR *p_pkt)
{
UNUSED(p_rsp);
UNUSED(p_pkt);
/* nothing to be added. */
AVRC_TRACE_API("avrc_bld_inform_charset_rsp");
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_inform_battery_status_rsp
**
** Description This function builds the Inform Battery Status
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_inform_battery_status_rsp (tAVRC_RSP *p_rsp, BT_HDR *p_pkt)
{
UNUSED(p_rsp);
UNUSED(p_pkt);
/* nothing to be added. */
AVRC_TRACE_API("avrc_bld_inform_battery_status_rsp");
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_elem_attrs_rsp
**
** Description This function builds the Get Element Attributes
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_elem_attrs_rsp (tAVRC_GET_ELEM_ATTRS_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start, *p_len, *p_count;
UINT16 len;
UINT8 xx;
AVRC_TRACE_API("avrc_bld_get_elem_attrs_rsp");
if (!p_rsp->p_attrs)
{
AVRC_TRACE_ERROR("avrc_bld_get_elem_attrs_rsp NULL parameter");
return AVRC_STS_BAD_PARAM;
}
/* get the existing length, if any, and also the num attributes */
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
BE_STREAM_TO_UINT16(len, p_data);
p_count = p_data;
if (len == 0)
{
*p_count = 0;
p_data++;
}
else
{
p_data = p_start + p_pkt->len;
}
for (xx=0; xx<p_rsp->num_attr; xx++)
{
if (!AVRC_IS_VALID_MEDIA_ATTRIBUTE(p_rsp->p_attrs[xx].attr_id))
{
AVRC_TRACE_ERROR("avrc_bld_get_elem_attrs_rsp invalid attr id[%d]: %d", xx, p_rsp->p_attrs[xx].attr_id);
continue;
}
if ( !p_rsp->p_attrs[xx].name.p_str )
{
p_rsp->p_attrs[xx].name.str_len = 0;
}
UINT32_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].attr_id);
UINT16_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].name.charset_id);
UINT16_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].name.str_len);
ARRAY_TO_BE_STREAM(p_data, p_rsp->p_attrs[xx].name.p_str, p_rsp->p_attrs[xx].name.str_len);
(*p_count)++;
}
len = p_data - p_count;
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_get_play_status_rsp
**
** Description This function builds the Get Play Status
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_get_play_status_rsp (tAVRC_GET_PLAY_STATUS_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_get_play_status_rsp");
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2;
/* add fixed lenth - song len(4) + song position(4) + status(1) */
UINT16_TO_BE_STREAM(p_data, 9);
UINT32_TO_BE_STREAM(p_data, p_rsp->song_len);
UINT32_TO_BE_STREAM(p_data, p_rsp->song_pos);
UINT8_TO_BE_STREAM(p_data, p_rsp->play_status);
p_pkt->len = (p_data - p_start);
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_notify_rsp
**
** Description This function builds the Notification response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_notify_rsp (tAVRC_REG_NOTIF_RSP *p_rsp, BT_HDR *p_pkt)
{
UINT8 *p_data, *p_start;
UINT8 *p_len;
UINT16 len = 0;
UINT8 xx;
tAVRC_STS status = AVRC_STS_NO_ERROR;
AVRC_TRACE_API("avrc_bld_notify_rsp");
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_len = p_start + 2; /* pdu + rsvd */
p_data += 2;
UINT8_TO_BE_STREAM(p_data, p_rsp->event_id);
switch (p_rsp->event_id)
{
case AVRC_EVT_PLAY_STATUS_CHANGE: /* 0x01 */
/* p_rsp->param.play_status >= AVRC_PLAYSTATE_STOPPED is always TRUE */
if ((p_rsp->param.play_status <= AVRC_PLAYSTATE_REV_SEEK) ||
(p_rsp->param.play_status == AVRC_PLAYSTATE_ERROR) )
{
UINT8_TO_BE_STREAM(p_data, p_rsp->param.play_status);
len = 2;
}
else
{
AVRC_TRACE_ERROR("bad play state");
status = AVRC_STS_BAD_PARAM;
}
break;
case AVRC_EVT_TRACK_CHANGE: /* 0x02 */
ARRAY_TO_BE_STREAM(p_data, p_rsp->param.track, AVRC_UID_SIZE);
len = (UINT8)(AVRC_UID_SIZE + 1);
break;
case AVRC_EVT_TRACK_REACHED_END: /* 0x03 */
case AVRC_EVT_TRACK_REACHED_START: /* 0x04 */
len = 1;
break;
case AVRC_EVT_PLAY_POS_CHANGED: /* 0x05 */
UINT32_TO_BE_STREAM(p_data, p_rsp->param.play_pos);
len = 5;
break;
case AVRC_EVT_BATTERY_STATUS_CHANGE: /* 0x06 */
if (AVRC_IS_VALID_BATTERY_STATUS(p_rsp->param.battery_status))
{
UINT8_TO_BE_STREAM(p_data, p_rsp->param.battery_status);
len = 2;
}
else
{
AVRC_TRACE_ERROR("bad battery status");
status = AVRC_STS_BAD_PARAM;
}
break;
case AVRC_EVT_SYSTEM_STATUS_CHANGE: /* 0x07 */
if (AVRC_IS_VALID_SYSTEM_STATUS(p_rsp->param.system_status))
{
UINT8_TO_BE_STREAM(p_data, p_rsp->param.system_status);
len = 2;
}
else
{
AVRC_TRACE_ERROR("bad system status");
status = AVRC_STS_BAD_PARAM;
}
break;
case AVRC_EVT_APP_SETTING_CHANGE: /* 0x08 */
if (p_rsp->param.player_setting.num_attr > AVRC_MAX_APP_SETTINGS)
p_rsp->param.player_setting.num_attr = AVRC_MAX_APP_SETTINGS;
if (p_rsp->param.player_setting.num_attr > 0)
{
UINT8_TO_BE_STREAM(p_data, p_rsp->param.player_setting.num_attr);
len = 2;
for (xx=0; xx<p_rsp->param.player_setting.num_attr; xx++)
{
if (avrc_is_valid_player_attrib_value(p_rsp->param.player_setting.attr_id[xx],
p_rsp->param.player_setting.attr_value[xx]))
{
UINT8_TO_BE_STREAM(p_data, p_rsp->param.player_setting.attr_id[xx]);
UINT8_TO_BE_STREAM(p_data, p_rsp->param.player_setting.attr_value[xx]);
}
else
{
AVRC_TRACE_ERROR("bad player app seeting attribute or value");
status = AVRC_STS_BAD_PARAM;
break;
}
len += 2;
}
}
else
status = AVRC_STS_BAD_PARAM;
break;
default:
status = AVRC_STS_BAD_PARAM;
AVRC_TRACE_ERROR("unknown event_id");
}
UINT16_TO_BE_STREAM(p_len, len);
p_pkt->len = (p_data - p_start);
return status;
}
/*******************************************************************************
**
** Function avrc_bld_next_rsp
**
** Description This function builds the Request Continue or Abort
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_next_rsp (tAVRC_RSP *p_rsp, BT_HDR *p_pkt)
{
UNUSED(p_rsp);
UNUSED(p_pkt);
/* nothing to be added. */
AVRC_TRACE_API("avrc_bld_next_rsp");
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_group_navigation_rsp
**
** Description This function builds the Group Navigation
** response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
tAVRC_STS avrc_bld_group_navigation_rsp (UINT16 navi_id, BT_HDR *p_pkt)
{
UINT8 *p_data;
if (!AVRC_IS_VALID_GROUP(navi_id))
{
AVRC_TRACE_ERROR("avrc_bld_group_navigation_rsp bad navigation op id: %d", navi_id);
return AVRC_STS_BAD_PARAM;
}
AVRC_TRACE_API("avrc_bld_group_navigation_rsp");
p_data = (UINT8 *)(p_pkt+1) + p_pkt->offset;
UINT16_TO_BE_STREAM(p_data, navi_id);
p_pkt->len = 2;
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_rejected_rsp
**
** Description This function builds the General Response response.
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
static tAVRC_STS avrc_bld_rejected_rsp( tAVRC_RSP *p_rsp, BT_HDR *p_pkt )
{
UINT8 *p_data, *p_start;
AVRC_TRACE_API("avrc_bld_rejected_rsp: status=%d, pdu:x%x", p_rsp->status, p_rsp->pdu);
p_start = (UINT8 *)(p_pkt + 1) + p_pkt->offset;
p_data = p_start + 2;
AVRC_TRACE_DEBUG("pdu:x%x", *p_start);
UINT16_TO_BE_STREAM(p_data, 1);
UINT8_TO_BE_STREAM(p_data, p_rsp->status);
p_pkt->len = p_data - p_start;
return AVRC_STS_NO_ERROR;
}
/*******************************************************************************
**
** Function avrc_bld_init_rsp_buffer
**
** Description This function initializes the response 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_rsp_buffer(tAVRC_RESPONSE *p_rsp)
{
UINT16 offset = AVRC_MSG_PASS_THRU_OFFSET, chnl = AVCT_DATA_CTRL, len=AVRC_META_CMD_POOL_SIZE;
BT_HDR *p_pkt=NULL;
UINT8 opcode = avrc_opcode_from_pdu(p_rsp->pdu);
AVRC_TRACE_API("avrc_bld_init_rsp_buffer: pdu=%x, opcode=%x/%x", p_rsp->pdu, opcode,
p_rsp->rsp.opcode);
if (opcode != p_rsp->rsp.opcode && p_rsp->rsp.status != AVRC_STS_NO_ERROR &&
avrc_is_valid_opcode(p_rsp->rsp.opcode))
{
opcode = p_rsp->rsp.opcode;
AVRC_TRACE_API("opcode=%x", opcode);
}
switch (opcode)
{
case AVRC_OP_PASS_THRU:
offset = AVRC_MSG_PASS_THRU_OFFSET;
break;
case AVRC_OP_VENDOR:
offset = AVRC_MSG_VENDOR_OFFSET;
if (p_rsp->pdu == AVRC_PDU_GET_ELEMENT_ATTR)
len = AVRC_BROWSE_POOL_SIZE;
break;
}
/* allocate and initialize the buffer */
p_pkt = (BT_HDR *)GKI_getbuf(len);
if (p_pkt)
{
UINT8 *p_data, *p_start;
p_pkt->layer_specific = chnl;
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_rsp->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_rsp->rsp.opcode = opcode;
return p_pkt;
}
/*******************************************************************************
**
** Function AVRC_BldResponse
**
** Description This function builds the given AVRCP response to the given
** GKI buffer
**
** Returns AVRC_STS_NO_ERROR, if the response is built successfully
** Otherwise, the error code.
**
*******************************************************************************/
tAVRC_STS AVRC_BldResponse( UINT8 handle, tAVRC_RESPONSE *p_rsp, BT_HDR **pp_pkt)
{
tAVRC_STS status = AVRC_STS_BAD_PARAM;
BT_HDR *p_pkt;
BOOLEAN alloc = FALSE;
UNUSED(handle);
if (!p_rsp || !pp_pkt)
{
AVRC_TRACE_API("AVRC_BldResponse. Invalid parameters passed. p_rsp=%p, pp_pkt=%p",
p_rsp, pp_pkt);
return AVRC_STS_BAD_PARAM;
}
if (*pp_pkt == NULL)
{
if ((*pp_pkt = avrc_bld_init_rsp_buffer(p_rsp)) == NULL)
{
AVRC_TRACE_API("AVRC_BldResponse: Failed to initialize response buffer");
return AVRC_STS_INTERNAL_ERR;
}
alloc = TRUE;
}
status = AVRC_STS_NO_ERROR;
p_pkt = *pp_pkt;
AVRC_TRACE_API("AVRC_BldResponse: pdu=%x status=%x", p_rsp->rsp.pdu, p_rsp->rsp.status);
if (p_rsp->rsp.status != AVRC_STS_NO_ERROR)
{
return( avrc_bld_rejected_rsp(&p_rsp->rsp, p_pkt) );
}
switch (p_rsp->pdu)
{
case AVRC_PDU_NEXT_GROUP:
case AVRC_PDU_PREV_GROUP:
status = avrc_bld_group_navigation_rsp(p_rsp->pdu, p_pkt);
break;
case AVRC_PDU_GET_CAPABILITIES:
status = avrc_bld_get_capability_rsp(&p_rsp->get_caps, p_pkt);
break;
case AVRC_PDU_LIST_PLAYER_APP_ATTR:
status = avrc_bld_list_app_settings_attr_rsp(&p_rsp->list_app_attr, p_pkt);
break;
case AVRC_PDU_LIST_PLAYER_APP_VALUES:
status = avrc_bld_list_app_settings_values_rsp(&p_rsp->list_app_values, p_pkt);
break;
case AVRC_PDU_GET_CUR_PLAYER_APP_VALUE:
status = avrc_bld_get_cur_app_setting_value_rsp(&p_rsp->get_cur_app_val, p_pkt);
break;
case AVRC_PDU_SET_PLAYER_APP_VALUE:
status = avrc_bld_set_app_setting_value_rsp(&p_rsp->set_app_val, p_pkt);
break;
case AVRC_PDU_GET_PLAYER_APP_ATTR_TEXT:
status = avrc_bld_get_app_setting_attr_text_rsp(&p_rsp->get_app_attr_txt, p_pkt);
break;
case AVRC_PDU_GET_PLAYER_APP_VALUE_TEXT:
status = avrc_bld_get_app_setting_value_text_rsp(&p_rsp->get_app_val_txt, p_pkt);
break;
case AVRC_PDU_INFORM_DISPLAY_CHARSET:
status = avrc_bld_inform_charset_rsp(&p_rsp->inform_charset, p_pkt);
break;
case AVRC_PDU_INFORM_BATTERY_STAT_OF_CT:
status = avrc_bld_inform_battery_status_rsp(&p_rsp->inform_battery_status, p_pkt);
break;
case AVRC_PDU_GET_ELEMENT_ATTR:
status = avrc_bld_get_elem_attrs_rsp(&p_rsp->get_elem_attrs, p_pkt);
break;
case AVRC_PDU_GET_PLAY_STATUS:
status = avrc_bld_get_play_status_rsp(&p_rsp->get_play_status, p_pkt);
break;
case AVRC_PDU_REGISTER_NOTIFICATION:
status = avrc_bld_notify_rsp(&p_rsp->reg_notif, p_pkt);
break;
case AVRC_PDU_REQUEST_CONTINUATION_RSP: /* 0x40 */
status = avrc_bld_next_rsp(&p_rsp->continu, p_pkt);
break;
case AVRC_PDU_ABORT_CONTINUATION_RSP: /* 0x41 */
status = avrc_bld_next_rsp(&p_rsp->abort, p_pkt);
break;
}
if (alloc && (status != AVRC_STS_NO_ERROR) )
{
GKI_freebuf(p_pkt);
*pp_pkt = NULL;
}
AVRC_TRACE_API("AVRC_BldResponse: returning %d", status);
return status;
}
#endif /* (AVRC_METADATA_INCLUDED == TRUE)*/