/******************************************************************************
 *
 *  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 <bluetooth/log.h>
#include <string.h>

#include <cstdint>

#include "avrc_api.h"
#include "avrc_defs.h"
#include "avrc_int.h"
#include "osi/include/allocator.h"
#include "stack/include/bt_types.h"

using namespace bluetooth;

/*****************************************************************************
 *  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;
  uint8_t eventid = 0;

  /* 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;
  }

  if (p_msg->vendor_len < 4) {
    log::warn("message length {} too short: must be at least 4", p_msg->vendor_len);
    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);
  log::verbose("ctype:0x{:x} pdu:0x{:x}, len:{}/0x{:x} vendor_len=0x{:x}", p_msg->hdr.ctype,
               p_result->pdu, len, len, p_msg->vendor_len);
  if (p_msg->vendor_len < len + 4) {
    log::warn("message length {} too short: must be at least {}", p_msg->vendor_len, len + 4);
    return AVRC_STS_INTERNAL_ERR;
  }

  if (p_msg->hdr.ctype == AVRC_RSP_REJ) {
    if (len < 1) {
      log::warn("invalid parameter length {}: must be at least 1", len);
      return AVRC_STS_INTERNAL_ERR;
    }
    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 */

    case AVRC_PDU_SET_ABSOLUTE_VOLUME: /* 0x50 */
      if (!avrcp_absolute_volume_is_enabled()) {
        break;
      }
      if (len != 1) {
        status = AVRC_STS_INTERNAL_ERR;
      } else {
        BE_STREAM_TO_UINT8(p_result->volume.volume, p);
      }
      break;

    case AVRC_PDU_REGISTER_NOTIFICATION: /* 0x31 */
      if (!avrcp_absolute_volume_is_enabled()) {
        break;
      }
      if (len < 1) {
        log::warn("invalid parameter length {}: must be at least 1", len);
        return AVRC_STS_INTERNAL_ERR;
      }
      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)) {
        if (len < 2) {
          log::warn("invalid parameter length {}: must be at least 2", len);
          return AVRC_STS_INTERNAL_ERR;
        }
        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);
      }
      log::verbose("PDU reg notif response:event {:x}, volume {:x}", eventid,
                   p_result->reg_notif.param.volume);
      break;
    default:
      status = AVRC_STS_BAD_CMD;
      break;
  }

  return status;
}

static tAVRC_STS avrc_parse_notification_rsp(uint8_t* p_stream, uint16_t len,
                                             tAVRC_REG_NOTIF_RSP* p_rsp) {
  uint32_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) {
        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:
      min_len += 4;
      if (len < min_len) {
        goto length_error;
      }
      BE_STREAM_TO_UINT16(p_rsp->param.addr_player.player_id, p_stream);
      BE_STREAM_TO_UINT16(p_rsp->param.addr_player.uid_counter, p_stream);
      break;

    case AVRC_EVT_PLAY_POS_CHANGED:
      min_len += 4;
      if (len < min_len) {
        goto length_error;
      }
      BE_STREAM_TO_UINT32(p_rsp->param.play_pos, p_stream);
      break;

    case AVRC_EVT_UIDS_CHANGE:
      break;

    case AVRC_EVT_TRACK_REACHED_END:
    case AVRC_EVT_TRACK_REACHED_START:
    case AVRC_EVT_BATTERY_STATUS_CHANGE:
    case AVRC_EVT_SYSTEM_STATUS_CHANGE:
    default:
      break;
  }

  return AVRC_STS_NO_ERROR;

length_error:
  log::warn("invalid parameter length {}: must be at least {}", 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) {
    log::error("length {}", p_msg->browse_len);
    return AVRC_STS_BAD_PARAM;
  }

  uint8_t* p = p_msg->p_browse_data;

  /* read the pdu */
  if (p_msg->browse_len < 3) {
    log::warn("message length {} too short: must be at least 3", p_msg->browse_len);
    return AVRC_STS_BAD_PARAM;
  }
  BE_STREAM_TO_UINT8(pdu, p);
  uint16_t pkt_len;
  uint32_t min_len = 0;
  /* read the entire packet len */
  BE_STREAM_TO_UINT16(pkt_len, p);

  log::verbose("pdu:{}, pkt_len:{}", pdu, pkt_len);

  if (p_msg->browse_len < (pkt_len + 3)) {
    log::warn("message length {} too short: must be at least {}", p_msg->browse_len, pkt_len + 3);
    return AVRC_STS_INTERNAL_ERR;
  }

  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;

      min_len += 1;
      if (pkt_len < min_len) {
        goto browse_length_error;
      }
      /* read the status */
      BE_STREAM_TO_UINT8(get_item_rsp->status, p);
      if (get_item_rsp->status != AVRC_STS_NO_ERROR) {
        log::warn("returning error {}", get_item_rsp->status);
        return get_item_rsp->status;
      }

      min_len += 4;
      if (pkt_len < min_len) {
        goto browse_length_error;
      }
      /* 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);

      log::verbose("pdu {} status {} pkt_len {} uid counter {} item count {}", get_item_rsp->pdu,
                   get_item_rsp->status, pkt_len, get_item_rsp->uid_counter,
                   get_item_rsp->item_count);

      /* get each of the items */
      get_item_rsp->p_item_list =
              (tAVRC_ITEM*)osi_calloc(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++) {
        min_len += 1;
        if (pkt_len < min_len) {
          goto browse_length_error;
        }
        BE_STREAM_TO_UINT8(curr_item->item_type, p);
        log::verbose("item type {}", 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;
            min_len += 10 + AVRC_FEATURE_MASK_SIZE;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            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);

            /* read str */
            min_len += 4;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            BE_STREAM_TO_UINT16(player->name.charset_id, p);
            BE_STREAM_TO_UINT16(player->name.str_len, p);
            min_len += player->name.str_len;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            player->name.p_str = (uint8_t*)osi_calloc((player->name.str_len + 1) * sizeof(uint8_t));
            BE_STREAM_TO_ARRAY(p, player->name.p_str, player->name.str_len);
            log::verbose("type {} id {} mtype {} stype {} ps {} cs {} name len {}",
                         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;
            min_len += 4 + AVRC_UID_SIZE;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            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);

            /* read str, encoding to be handled by upper layers */
            min_len += 4;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            BE_STREAM_TO_UINT16(folder->name.charset_id, p);
            BE_STREAM_TO_UINT16(folder->name.str_len, p);
            min_len += folder->name.str_len;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            folder->name.p_str = (uint8_t*)osi_calloc((folder->name.str_len + 1) * sizeof(uint8_t));
            BE_STREAM_TO_ARRAY(p, folder->name.p_str, folder->name.str_len);
            log::verbose("type {} playable {} cs {} name len {}", 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;
            min_len += 3 + AVRC_UID_SIZE;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            BE_STREAM_TO_UINT16(media_len, p);
            BE_STREAM_TO_ARRAY(p, media->uid, AVRC_UID_SIZE);
            BE_STREAM_TO_UINT8(media->type, p);

            /* read str, encoding to be handled by upper layers */
            min_len += 4;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            BE_STREAM_TO_UINT16(media->name.charset_id, p);
            BE_STREAM_TO_UINT16(media->name.str_len, p);
            min_len += 1 + media->name.str_len;
            if (pkt_len < min_len) {
              goto browse_length_error;
            }
            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);
            log::verbose("media type {} charset id {} len {} attr ct {}", media->type,
                         media->name.charset_id, media->name.str_len, media->attr_count);

            media->p_attr_list =
                    (tAVRC_ATTR_ENTRY*)osi_calloc(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]);
              min_len += 8;
              if (pkt_len < min_len) {
                goto browse_length_error;
              }
              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);
              min_len += attr_entry->name.str_len;
              if (pkt_len < min_len) {
                goto browse_length_error;
              }
              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);
              log::verbose("media attr id {} cs {} name len {}", attr_entry->attr_id,
                           attr_entry->name.charset_id, attr_entry->name.str_len);
            }
          } break;

          default:
            log::error("item type not handled {}", curr_item->item_type);
            return AVRC_STS_INTERNAL_ERR;
        }

        log::verbose("pkt_len {} min_len {}", pkt_len, min_len);

        /* 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);
      min_len += 5;
      if (pkt_len < min_len) {
        goto browse_length_error;
      }
      /* 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);

      log::verbose("pdu {} status {} item count {}", change_path_rsp->pdu, change_path_rsp->status,
                   change_path_rsp->num_items);
      break;
    }

    case AVRC_PDU_GET_ITEM_ATTRIBUTES: {
      tAVRC_GET_ATTRS_RSP* get_attr_rsp = &(p_rsp->get_attrs);
      get_attr_rsp->pdu = pdu;
      min_len += 2;
      if (pkt_len < min_len) {
        goto browse_length_error;
      }
      BE_STREAM_TO_UINT8(get_attr_rsp->status, p)
      BE_STREAM_TO_UINT8(get_attr_rsp->num_attrs, p);
      get_attr_rsp->p_attrs =
              (tAVRC_ATTR_ENTRY*)osi_calloc(get_attr_rsp->num_attrs * sizeof(tAVRC_ATTR_ENTRY));
      for (int i = 0; i < get_attr_rsp->num_attrs; i++) {
        tAVRC_ATTR_ENTRY* attr_entry = &(get_attr_rsp->p_attrs[i]);
        min_len += 8;
        if (pkt_len < min_len) {
          goto browse_length_error;
        }
        BE_STREAM_TO_UINT32(attr_entry->attr_id, p);
        BE_STREAM_TO_UINT16(attr_entry->name.charset_id, p);
        BE_STREAM_TO_UINT16(attr_entry->name.str_len, p);
        min_len += attr_entry->name.str_len;
        if (pkt_len < min_len) {
          goto browse_length_error;
        }
        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);
        log::verbose("media attr id {} cs {} name len {}", attr_entry->attr_id,
                     attr_entry->name.charset_id, attr_entry->name.str_len);
      }

      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 */
      min_len += 10;
      if (pkt_len < min_len) {
        goto browse_length_error;
      }
      BE_STREAM_TO_UINT8(set_br_pl_rsp->status, p);

      if (set_br_pl_rsp->status != AVRC_STS_NO_ERROR) {
        log::error("Stopping further parsing because player not browsable sts {}",
                   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);
      log::verbose("AVRC_PDU_SET_BROWSED_PLAYER status {} items {} cs {} depth {}",
                   set_br_pl_rsp->status, set_br_pl_rsp->num_items, set_br_pl_rsp->charset_id,
                   set_br_pl_rsp->folder_depth);

      set_br_pl_rsp->p_folders =
              (tAVRC_NAME*)osi_calloc(set_br_pl_rsp->folder_depth * 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]);
        min_len += 2;
        if (pkt_len < min_len) {
          goto browse_length_error;
        }
        BE_STREAM_TO_UINT16(folder_name->str_len, p);
        min_len += folder_name->str_len;
        if (pkt_len < min_len) {
          goto browse_length_error;
        }
        log::verbose("AVRC_PDU_SET_BROWSED_PLAYER item: {} len: {}", i, folder_name->str_len);
        folder_name->p_str = (uint8_t*)osi_calloc((folder_name->str_len + 1) * sizeof(uint8_t));
        BE_STREAM_TO_ARRAY(p, folder_name->p_str, folder_name->str_len);
      }
      break;
    }

    default:
      log::error("pdu {} not handled", pdu);
  }

  return status;

browse_length_error:
  log::warn("invalid parameter length {}: must be at least {}", pkt_len, min_len);
  return AVRC_STS_BAD_CMD;
}

/*******************************************************************************
 *
 * 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) {
    log::warn("message length {} too short: must be at least 4", 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;
  uint32_t min_len = 0;
  BE_STREAM_TO_UINT16(len, p);
  log::verbose("ctype:0x{:x} pdu:0x{:x}, len:{}  vendor_len=0x{:x}", p_msg->hdr.ctype,
               p_result->pdu, len, p_msg->vendor_len);
  if (p_msg->vendor_len < len + 4) {
    log::warn("message length {} too short: must be at least {}", 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);
      log::verbose("cap id = {}, cap_count = {}", p_result->get_caps.capability_id,
                   p_result->get_caps.count);
      if (p_result->get_caps.capability_id == AVRC_CAP_COMPANY_ID) {
        if (p_result->get_caps.count > AVRC_CAP_MAX_NUM_COMP_ID) {
          return AVRC_STS_INTERNAL_ERR;
        }
        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) {
        if (p_result->get_caps.count > AVRC_CAP_MAX_NUM_EVT_ID) {
          return AVRC_STS_INTERNAL_ERR;
        }
        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);
      log::verbose("attr count = {}", p_result->list_app_attr.num_attr);

      if (p_result->list_app_attr.num_attr > AVRC_MAX_APP_ATTR_SIZE) {
        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) {
        p_result->list_app_values.num_val = AVRC_MAX_APP_ATTR_SIZE;
      }

      log::verbose("value count = {}", 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);
      log::verbose("attr count = {}", p_result->get_cur_app_val.num_val);

      if (p_result->get_cur_app_val.num_val > AVRC_MAX_APP_ATTR_SIZE) {
        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;
      }
      log::verbose("attr count = {}", 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;
      log::verbose("value count = {}", 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.play_status, p);
      break;

    case AVRC_PDU_SET_ADDRESSED_PLAYER:
      if (len != 1) {
        log::error("pdu: {} len {}", 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:
  log::warn("invalid parameter length {}: must be at least {}", 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:
        log::error("unknown opcode:0x{:x}", 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, uint8_t* /* p_buf */,
                            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:
        log::error("unknown opcode:0x{:x}", p_msg->hdr.opcode);
        break;
    }
    p_result->rsp.opcode = p_msg->hdr.opcode;
    p_result->rsp.status = status;
  }
  return status;
}