diff options
Diffstat (limited to 'profiles/audio/avrcp.c')
| -rw-r--r-- | profiles/audio/avrcp.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/profiles/audio/avrcp.c b/profiles/audio/avrcp.c index 48c302a24..29fd67ab6 100644 --- a/profiles/audio/avrcp.c +++ b/profiles/audio/avrcp.c @@ -140,6 +140,11 @@ #define AVRCP_CT_VERSION 0x0106 #define AVRCP_TG_VERSION 0x0105 +#define AVRCP_SCOPE_MEDIA_PLAYER_LIST 0x00 +#define AVRCP_SCOPE_MEDIA_PLAYER_VFS 0x01 +#define AVRCP_SCOPE_SEARCH 0x02 +#define AVRCP_SCOPE_NOW_PLAYING 0x03 + #if __BYTE_ORDER == __LITTLE_ENDIAN struct avrcp_header { @@ -178,6 +183,30 @@ struct avrcp_browsing_header { } __attribute__ ((packed)); #define AVRCP_BROWSING_HEADER_LENGTH 3 +struct get_folder_items_rsp { + uint8_t status; + uint16_t uid_counter; + uint16_t num_items; + uint8_t data[0]; +} __attribute__ ((packed)); + +struct folder_item { + uint8_t type; + uint16_t len; + uint8_t data[0]; +} __attribute__ ((packed)); + +struct player_item { + uint16_t player_id; + uint8_t type; + uint32_t subtype; + uint8_t status; + uint8_t features[16]; + uint16_t charset; + uint16_t namelen; + char name[0]; +} __attribute__ ((packed)); + struct avrcp_server { struct btd_adapter *adapter; uint32_t tg_record_id; @@ -263,6 +292,13 @@ struct control_pdu_handler { static GSList *servers = NULL; static unsigned int avctp_id = 0; +/* Default feature bit mask for media player as per avctp.c:key_map */ +static const uint8_t features[16] = { + 0xF8, 0xBF, 0xFF, 0xBF, 0x1F, + 0xFB, 0x3F, 0x60, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00 }; + /* Company IDs supported by this device */ static uint32_t company_ids[] = { IEEEID_BTSIG, @@ -1841,11 +1877,122 @@ err_metadata: return AVRCP_HEADER_LENGTH + 1; } +static void avrcp_handle_media_player_list(struct avrcp *session, + struct avrcp_browsing_header *pdu, + uint32_t start_item, uint32_t end_item) +{ + struct avrcp_player *player = session->target->player; + struct get_folder_items_rsp *rsp; + const char *name = NULL; + GSList *l; + + rsp = (void *)pdu->params; + rsp->status = AVRCP_STATUS_SUCCESS; + rsp->uid_counter = htons(player_get_uid_counter(player)); + rsp->num_items = 0; + pdu->param_len = sizeof(*rsp); + + for (l = g_slist_nth(session->server->players, start_item); + l; l = g_slist_next(l)) { + struct avrcp_player *player = l->data; + struct folder_item *folder; + struct player_item *item; + uint16_t namelen; + + if (rsp->num_items == (end_item - start_item) + 1) + break; + + folder = (void *)&pdu->params[pdu->param_len]; + folder->type = 0x01; /* Media Player */ + + pdu->param_len += sizeof(*folder); + + item = (void *)folder->data; + item->player_id = htons(player->id); + item->type = 0x01; /* Audio */ + item->subtype = htonl(0x01); /* Audio Book */ + item->status = player_get_status(player); + /* Assign Default Feature Bit Mask */ + memcpy(&item->features, &features, sizeof(features)); + + item->charset = htons(AVRCP_CHARSET_UTF8); + + name = player->cb->get_name(player->user_data); + namelen = strlen(name); + item->namelen = htons(namelen); + memcpy(item->name, name, namelen); + + folder->len = htons(sizeof(*item) + namelen); + pdu->param_len += sizeof(*item) + namelen; + rsp->num_items++; + } + + /* If no player could be found respond with an error */ + if (!rsp->num_items) + goto failed; + + rsp->num_items = htons(rsp->num_items); + pdu->param_len = htons(pdu->param_len); + + return; + +failed: + pdu->params[0] = AVRCP_STATUS_OUT_OF_BOUNDS; + pdu->param_len = htons(1); +} + +static void avrcp_handle_get_folder_items(struct avrcp *session, + struct avrcp_browsing_header *pdu, + uint8_t transaction) +{ + uint32_t start_item = 0; + uint32_t end_item = 0; + uint8_t scope; + uint8_t status = AVRCP_STATUS_SUCCESS; + + if (!pdu || ntohs(pdu->param_len) < 10) { + status = AVRCP_STATUS_INVALID_PARAM; + goto failed; + } + + scope = pdu->params[0]; + start_item = bt_get_be32(&pdu->params[1]); + end_item = bt_get_be32(&pdu->params[5]); + + DBG("scope 0x%02x start_item 0x%08x end_item 0x%08x", scope, + start_item, end_item); + + if (end_item < start_item) { + status = AVRCP_STATUS_INVALID_PARAM; + goto failed; + } + + switch (scope) { + case AVRCP_SCOPE_MEDIA_PLAYER_LIST: + avrcp_handle_media_player_list(session, pdu, + start_item, end_item); + break; + case AVRCP_SCOPE_MEDIA_PLAYER_VFS: + case AVRCP_SCOPE_SEARCH: + case AVRCP_SCOPE_NOW_PLAYING: + default: + status = AVRCP_STATUS_INVALID_PARAM; + goto failed; + } + + return; + +failed: + pdu->params[0] = status; + pdu->param_len = htons(1); +} + static struct browsing_pdu_handler { uint8_t pdu_id; void (*func) (struct avrcp *session, struct avrcp_browsing_header *pdu, uint8_t transaction); } browsing_handlers[] = { + { AVRCP_GET_FOLDER_ITEMS, avrcp_handle_get_folder_items }, { }, }; |