mirror of
https://github.com/bluekitchen/btstack.git
synced 2025-04-01 13:20:50 +00:00
1766 lines
79 KiB
C
1766 lines
79 KiB
C
/*
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* Copyright (C) 2016 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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#define BTSTACK_FILE__ "avrcp_controller.c"
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#include <stdint.h>
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#include <string.h>
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#include <inttypes.h>
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#include "classic/avrcp.h"
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#include "classic/avrcp_controller.h"
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#include "bluetooth_sdp.h"
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#include "btstack_debug.h"
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#include "btstack_event.h"
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#include "btstack_util.h"
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#include "l2cap.h"
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#define AVRCP_CMD_BUFFER_SIZE 30
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// made public in avrcp_controller.h
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avrcp_context_t avrcp_controller_context;
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static uint8_t avrcp_controller_calc_next_transaction_label(uint8_t current_transaction_label){
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current_transaction_label++;
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if (current_transaction_label == 16){
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current_transaction_label = 1;
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}
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return current_transaction_label;
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}
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static uint8_t avrcp_controller_get_next_transaction_label(avrcp_connection_t * connection){
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connection->transaction_id_counter = avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter);
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return connection->transaction_id_counter;
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}
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static bool avrcp_controller_is_transaction_id_valid(avrcp_connection_t * connection, uint8_t transaction_id){
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uint8_t delta = ((int8_t) transaction_id - connection->last_confirmed_transaction_id) & 0x0f;
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return delta < 15;
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}
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static uint16_t avrcp_get_max_payload_size_for_packet_type(avrcp_packet_type_t packet_type){
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switch (packet_type){
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case AVRCP_SINGLE_PACKET:
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return AVRCP_CMD_BUFFER_SIZE - 3;
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case AVRCP_START_PACKET:
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return AVRCP_CMD_BUFFER_SIZE - 4;
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case AVRCP_CONTINUE_PACKET:
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case AVRCP_END_PACKET:
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return AVRCP_CMD_BUFFER_SIZE - 1;
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default:
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btstack_assert(false);
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return 0;
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}
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}
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static int avrcp_controller_supports_browsing(uint16_t controller_supported_features){
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return controller_supported_features & AVRCP_FEATURE_MASK_BROWSING;
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}
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static void avrcp_controller_emit_supported_events(avrcp_connection_t * connection){
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uint8_t ctype = (uint8_t) AVRCP_CTYPE_RESPONSE_CHANGED_STABLE;
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uint8_t event_id;
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for (event_id = (uint8_t) AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED; event_id < (uint8_t) AVRCP_NOTIFICATION_EVENT_MAX_VALUE; event_id++){
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if ( (connection->remote_supported_notifications & (1<<event_id)) == 0){
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continue;
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}
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uint8_t event[8];
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uint8_t pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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event[pos++] = sizeof(event) - 2;
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event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID;
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little_endian_store_16(event, pos, connection->avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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event[pos++] = 0;
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event[pos++] = event_id;
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UNUSED(pos);
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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}
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uint8_t event[7];
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uint8_t pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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event[pos++] = sizeof(event) - 2;
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event[pos++] = AVRCP_SUBEVENT_GET_CAPABILITY_EVENT_ID_DONE;
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little_endian_store_16(event, pos, connection->avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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event[pos++] = 0;
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UNUSED(pos);
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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}
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static void avrcp_controller_emit_notification_for_event_id(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id,
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avrcp_command_type_t ctype, const uint8_t *payload,
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uint16_t size) {
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switch (event_id){
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case AVRCP_NOTIFICATION_EVENT_PLAYBACK_POS_CHANGED:{
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if (size < 4) break;
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uint32_t song_position = big_endian_read_32(payload, 0);
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uint16_t offset = 0;
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uint8_t event[10];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_POS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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little_endian_store_32(event, offset, song_position);
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offset += 4;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED:{
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if (size < 1) break;
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uint16_t offset = 0;
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uint8_t event[7];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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event[offset++] = payload[0];
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED:{
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uint16_t offset = 0;
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uint8_t event[6];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED:{
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uint16_t offset = 0;
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uint8_t event[6];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_AVAILABLE_PLAYERS_CHANGED:{
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uint16_t offset = 0;
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uint8_t event[6];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED:{
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if (size < 1) break;
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uint16_t offset = 0;
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uint8_t event[7];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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event[offset++] = payload[0] & 0x7F;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_UIDS_CHANGED:{
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if (size < 2) break;
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uint8_t event[8];
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uint16_t offset = 0;
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uint16_t uuid = big_endian_read_16(payload, 0);
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_UIDS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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little_endian_store_16(event, offset, uuid);
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offset += 2;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_END:{
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uint16_t offset = 0;
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uint8_t event[6];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_END;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_TRACK_REACHED_START:{
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uint16_t offset = 0;
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uint8_t event[6];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_TRACK_REACHED_START;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_BATT_STATUS_CHANGED:{
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if (size < 1) break;
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uint16_t offset = 0;
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uint8_t event[7];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_BATT_STATUS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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event[offset++] = payload[0];
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED:{
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if (size < 1) break;
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uint16_t offset = 0;
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uint8_t event[7];
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event[offset++] = HCI_EVENT_AVRCP_META;
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event[offset++] = sizeof(event) - 2;
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event[offset++] = AVRCP_SUBEVENT_NOTIFICATION_EVENT_SYSTEM_STATUS_CHANGED;
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little_endian_store_16(event, offset, avrcp_cid);
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offset += 2;
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event[offset++] = ctype;
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event[offset++] = payload[0];
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(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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break;
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}
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case AVRCP_NOTIFICATION_EVENT_PLAYER_APPLICATION_SETTING_CHANGED:
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default:
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log_info("avrcp: not implemented");
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break;
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}
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}
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static void avrcp_controller_emit_repeat_and_shuffle_mode(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, avrcp_repeat_mode_t repeat_mode, avrcp_shuffle_mode_t shuffle_mode){
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btstack_assert(callback != NULL);
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uint8_t event[8];
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int pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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event[pos++] = sizeof(event) - 2;
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event[pos++] = AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE;
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little_endian_store_16(event, pos, avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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event[pos++] = repeat_mode;
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event[pos++] = shuffle_mode;
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(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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}
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static void avrcp_controller_emit_now_playing_info_event_done(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, uint8_t status){
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uint8_t event[7];
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int pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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event[pos++] = sizeof(event) - 2;
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event[pos++] = AVRCP_SUBEVENT_NOW_PLAYING_INFO_DONE;
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little_endian_store_16(event, pos, avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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event[pos++] = status;
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(*callback)(HCI_EVENT_PACKET, 0, event, pos);
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}
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static void avrcp_controller_emit_now_playing_info_event(btstack_packet_handler_t callback, uint16_t avrcp_cid, uint8_t ctype, avrcp_media_attribute_id_t attr_id, uint8_t * value, uint16_t value_len){
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uint8_t event[HCI_EVENT_BUFFER_SIZE];
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int pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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// reserve one byte for subevent type and data len
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int data_len_pos = pos;
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pos++;
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int subevent_type_pos = pos;
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pos++;
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little_endian_store_16(event, pos, avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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switch (attr_id){
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case AVRCP_MEDIA_ATTR_TITLE:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO;
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event[pos++] = value_len;
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(void)memcpy(event + pos, value, value_len);
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break;
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case AVRCP_MEDIA_ATTR_ARTIST:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO;
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event[pos++] = value_len;
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(void)memcpy(event + pos, value, value_len);
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break;
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case AVRCP_MEDIA_ATTR_ALBUM:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO;
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event[pos++] = value_len;
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(void)memcpy(event + pos, value, value_len);
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break;
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case AVRCP_MEDIA_ATTR_GENRE:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO;
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event[pos++] = value_len;
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(void)memcpy(event + pos, value, value_len);
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break;
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case AVRCP_MEDIA_ATTR_SONG_LENGTH_MS:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_SONG_LENGTH_MS_INFO;
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if (value){
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little_endian_store_32(event, pos, btstack_atoi((char *)value));
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} else {
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little_endian_store_32(event, pos, 0);
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}
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pos += 4;
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break;
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case AVRCP_MEDIA_ATTR_TRACK:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TRACK_INFO;
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if (value){
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event[pos++] = btstack_atoi((char *)value);
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} else {
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event[pos++] = 0;
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}
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break;
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case AVRCP_MEDIA_ATTR_TOTAL_NUM_ITEMS:
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event[subevent_type_pos] = AVRCP_SUBEVENT_NOW_PLAYING_TOTAL_TRACKS_INFO;
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if (value){
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event[pos++] = btstack_atoi((char *)value);
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} else {
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event[pos++] = 0;
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}
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break;
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default:
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break;
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}
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event[data_len_pos] = pos - 2;
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(*callback)(HCI_EVENT_PACKET, 0, event, pos);
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}
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static void avrcp_controller_emit_operation_status(btstack_packet_handler_t callback, uint8_t subevent, uint16_t avrcp_cid, uint8_t ctype, uint8_t operation_id){
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btstack_assert(callback != NULL);
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uint8_t event[7];
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int pos = 0;
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event[pos++] = HCI_EVENT_AVRCP_META;
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event[pos++] = sizeof(event) - 2;
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event[pos++] = subevent;
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little_endian_store_16(event, pos, avrcp_cid);
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pos += 2;
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event[pos++] = ctype;
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event[pos++] = operation_id;
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(*callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
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}
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static void avrcp_parser_reset(avrcp_connection_t * connection){
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connection->list_offset = 0;
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connection->num_attributes = 0;
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connection->num_parsed_attributes = 0;
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connection->parser_attribute_header_pos = 0;
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connection->num_received_fragments = 0;
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connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
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}
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static void avrcp_parser_process_byte(uint8_t byte, avrcp_connection_t * connection, avrcp_command_type_t ctype){
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uint16_t attribute_total_value_len;
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uint32_t attribute_id;
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switch(connection->parser_state){
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case AVRCP_PARSER_GET_ATTRIBUTE_HEADER:
|
|
connection->parser_attribute_header[connection->parser_attribute_header_pos++] = byte;
|
|
connection->list_offset++;
|
|
|
|
if (connection->parser_attribute_header_pos < AVRCP_ATTRIBUTE_HEADER_LEN) return;
|
|
|
|
attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
|
|
connection->attribute_value_len = btstack_min(attribute_total_value_len, AVRCP_MAX_ATTRIBUTTE_SIZE);
|
|
if (connection->attribute_value_len > 0){
|
|
// get ready for attribute value
|
|
connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_VALUE;
|
|
return;
|
|
}
|
|
|
|
// emit empty attribute
|
|
attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
|
|
avrcp_controller_emit_now_playing_info_event(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, (avrcp_media_attribute_id_t) attribute_id, connection->attribute_value, connection->attribute_value_len);
|
|
|
|
// done, see below
|
|
break;
|
|
|
|
case AVRCP_PARSER_GET_ATTRIBUTE_VALUE:
|
|
connection->attribute_value[connection->attribute_value_offset++] = byte;
|
|
connection->list_offset++;
|
|
|
|
if (connection->attribute_value_offset < connection->attribute_value_len) return;
|
|
|
|
// emit (potentially partial) attribute
|
|
attribute_id = big_endian_read_32(connection->parser_attribute_header, 0);
|
|
avrcp_controller_emit_now_playing_info_event(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, (avrcp_media_attribute_id_t) attribute_id, connection->attribute_value, connection->attribute_value_len);
|
|
|
|
attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
|
|
if (connection->attribute_value_offset < attribute_total_value_len){
|
|
// ignore rest of attribute
|
|
connection->parser_state = AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE;
|
|
return;
|
|
}
|
|
|
|
// done, see below
|
|
break;
|
|
|
|
case AVRCP_PARSER_IGNORE_REST_OF_ATTRIBUTE_VALUE:
|
|
connection->attribute_value_offset++;
|
|
connection->list_offset++;
|
|
|
|
attribute_total_value_len = big_endian_read_16(connection->parser_attribute_header, 6);
|
|
if (connection->attribute_value_offset < attribute_total_value_len) return;
|
|
|
|
// done, see below
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
// attribute fully read, check if more to come
|
|
if (connection->list_offset < connection->list_size){
|
|
// more to come, reset parser
|
|
connection->parser_state = AVRCP_PARSER_GET_ATTRIBUTE_HEADER;
|
|
connection->parser_attribute_header_pos = 0;
|
|
connection->attribute_value_offset = 0;
|
|
} else {
|
|
// fully done
|
|
avrcp_parser_reset(connection);
|
|
avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 0);
|
|
}
|
|
}
|
|
|
|
static void avrcp_controller_parse_and_emit_element_attrs(uint8_t * packet, uint16_t num_bytes_to_read, avrcp_connection_t * connection, avrcp_command_type_t ctype){
|
|
int i;
|
|
for (i=0;i<num_bytes_to_read;i++){
|
|
avrcp_parser_process_byte(packet[i], connection, ctype);
|
|
}
|
|
}
|
|
|
|
|
|
static int avrcp_send_cmd(avrcp_connection_t * connection, avrcp_packet_type_t packet_type){
|
|
uint8_t command[AVRCP_CMD_BUFFER_SIZE];
|
|
uint16_t pos = 0;
|
|
|
|
// non-fragmented: transport header (1) + PID (2)
|
|
// fragmented: transport header (1) + num packets (1) + PID (2)
|
|
|
|
// transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier)
|
|
command[pos++] = (connection->transaction_id << 4) | (packet_type << 2) | (AVRCP_COMMAND_FRAME << 1) | 0;
|
|
|
|
if (packet_type == AVRCP_START_PACKET){
|
|
// num packets: (3 bytes overhead (PID, num packets) + command) / (MTU - transport header).
|
|
// to get number of packets using integer division, we subtract 1 from the data e.g. len = 5, packet size 5 => need 1 packet
|
|
command[pos++] = ((connection->cmd_operands_fragmented_len + 3 - 1) / (AVRCP_CMD_BUFFER_SIZE - 1)) + 1;
|
|
}
|
|
|
|
if ((packet_type == AVRCP_SINGLE_PACKET) || (packet_type == AVRCP_START_PACKET)){
|
|
// Profile IDentifier (PID)
|
|
command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8;
|
|
command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF;
|
|
|
|
// command_type
|
|
command[pos++] = connection->command_type;
|
|
// subunit_type | subunit ID
|
|
command[pos++] = (connection->subunit_type << 3) | connection->subunit_id;
|
|
// opcode
|
|
command[pos++] = (uint8_t)connection->command_opcode;
|
|
}
|
|
|
|
if (packet_type == AVRCP_SINGLE_PACKET){
|
|
// operands
|
|
(void)memcpy(command + pos, connection->cmd_operands,
|
|
connection->cmd_operands_length);
|
|
pos += connection->cmd_operands_length;
|
|
} else {
|
|
uint16_t bytes_free = AVRCP_CMD_BUFFER_SIZE - pos;
|
|
uint16_t bytes_to_store = connection->cmd_operands_fragmented_len-connection->cmd_operands_fragmented_pos;
|
|
uint16_t bytes_to_copy = btstack_min(bytes_to_store, bytes_free);
|
|
(void)memcpy(command + pos,
|
|
&connection->cmd_operands_fragmented_buffer[connection->cmd_operands_fragmented_pos],
|
|
bytes_to_copy);
|
|
pos += bytes_to_copy;
|
|
connection->cmd_operands_fragmented_pos += bytes_to_copy;
|
|
}
|
|
|
|
return l2cap_send(connection->l2cap_signaling_cid, command, pos);
|
|
}
|
|
|
|
static int avrcp_send_register_notification(avrcp_connection_t * connection, uint8_t event_id){
|
|
uint8_t command[18];
|
|
uint16_t pos = 0;
|
|
// transport header : transaction label | Packet_type | C/R | IPID (1 == invalid profile identifier)
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
command[pos++] = (connection->transaction_id << 4) | (AVRCP_SINGLE_PACKET << 2) | (AVRCP_COMMAND_FRAME << 1) | 0;
|
|
|
|
command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL >> 8;
|
|
command[pos++] = BLUETOOTH_SERVICE_CLASS_AV_REMOTE_CONTROL & 0x00FF;
|
|
command[pos++] = AVRCP_CTYPE_NOTIFY;
|
|
command[pos++] = (AVRCP_SUBUNIT_TYPE_PANEL << 3) | AVRCP_SUBUNIT_ID;
|
|
command[pos++] = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
|
|
big_endian_store_24(command, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
command[pos++] = AVRCP_PDU_ID_REGISTER_NOTIFICATION;
|
|
command[pos++] = 0; // reserved(upper 6) | packet_type -> 0
|
|
big_endian_store_16(command, pos, 5); // parameter length
|
|
pos += 2;
|
|
command[pos++] = event_id;
|
|
big_endian_store_32(command, pos, 1); // send notification on playback position every second, for other notifications it is ignored
|
|
pos += 4;
|
|
return l2cap_send(connection->l2cap_signaling_cid, command, pos);
|
|
}
|
|
|
|
static void avrcp_press_and_hold_timeout_handler(btstack_timer_source_t * timer){
|
|
UNUSED(timer);
|
|
avrcp_connection_t * connection = (avrcp_connection_t*) btstack_run_loop_get_timer_context(timer);
|
|
btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
|
|
btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
|
|
connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
}
|
|
|
|
static void avrcp_press_and_hold_timer_start(avrcp_connection_t * connection){
|
|
btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
|
|
btstack_run_loop_set_timer_handler(&connection->press_and_hold_cmd_timer, avrcp_press_and_hold_timeout_handler);
|
|
btstack_run_loop_set_timer_context(&connection->press_and_hold_cmd_timer, connection);
|
|
btstack_run_loop_set_timer(&connection->press_and_hold_cmd_timer, 2000); // 2 seconds timeout
|
|
btstack_run_loop_add_timer(&connection->press_and_hold_cmd_timer);
|
|
}
|
|
|
|
static void avrcp_press_and_hold_timer_stop(avrcp_connection_t * connection){
|
|
connection->press_and_hold_cmd_active = false;
|
|
btstack_run_loop_remove_timer(&connection->press_and_hold_cmd_timer);
|
|
}
|
|
|
|
|
|
static uint8_t avrcp_controller_request_pass_through_release_control_cmd(avrcp_connection_t * connection){
|
|
connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
|
|
if (connection->press_and_hold_cmd_active){
|
|
avrcp_press_and_hold_timer_stop(connection);
|
|
}
|
|
connection->cmd_operands[0] = 0x80 | connection->cmd_operands[0];
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
static uint8_t avrcp_controller_request_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed, bool continuous_cmd){
|
|
log_info("Send command %d", opid);
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("Could not find a connection. avrcp cid 0x%02x", avrcp_cid);
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
|
|
if (connection->state != AVCTP_CONNECTION_OPENED){
|
|
log_error("Connection in wrong state %d, expected %d. avrcp cid 0x%02x", connection->state, AVCTP_CONNECTION_OPENED, avrcp_cid);
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
connection->state = AVCTP_W2_SEND_PRESS_COMMAND;
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_PASS_THROUGH;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
connection->cmd_operands_length = 0;
|
|
|
|
connection->press_and_hold_cmd_active = continuous_cmd;
|
|
connection->cmd_operands_length = 2;
|
|
connection->cmd_operands[0] = opid;
|
|
if (playback_speed > 0){
|
|
connection->cmd_operands[2] = playback_speed;
|
|
connection->cmd_operands_length++;
|
|
}
|
|
connection->cmd_operands[1] = connection->cmd_operands_length - 2;
|
|
|
|
if (connection->press_and_hold_cmd_active){
|
|
avrcp_press_and_hold_timer_start(connection);
|
|
}
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
static uint8_t request_single_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
|
|
return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, false);
|
|
}
|
|
|
|
static uint8_t request_continuous_pass_through_press_control_cmd(uint16_t avrcp_cid, avrcp_operation_id_t opid, uint16_t playback_speed){
|
|
return avrcp_controller_request_pass_through_press_control_cmd(avrcp_cid, opid, playback_speed, true);
|
|
}
|
|
|
|
static void avrcp_controller_get_capabilities_for_connection(avrcp_connection_t * connection, uint8_t capability_id){
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
|
|
connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CAPABILITIES; // PDU ID
|
|
connection->cmd_operands[4] = 0;
|
|
big_endian_store_16(connection->cmd_operands, 5, 1); // parameter length
|
|
connection->cmd_operands[7] = capability_id; // capability ID
|
|
connection->cmd_operands_length = 8;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
}
|
|
|
|
static uint8_t avrcp_controller_register_notification(avrcp_connection_t * connection, avrcp_notification_event_id_t event_id){
|
|
if (connection->remote_supported_notifications_queried && (connection->remote_supported_notifications & (1 << event_id)) == 0){
|
|
return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
|
|
}
|
|
if ( (connection->notifications_to_deregister & (1 << event_id)) != 0){
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
if ( (connection->notifications_enabled & (1 << event_id)) != 0){
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
if ( (connection->notifications_to_register & (1 << event_id)) != 0){
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
connection->notifications_to_register |= (1 << event_id);
|
|
|
|
if (!connection->remote_supported_notifications_queried){
|
|
connection->remote_supported_notifications_suppress_emit_result = true;
|
|
avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
static uint8_t avrcp_controller_request_abort_continuation(avrcp_connection_t * connection){
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_ABORT_CONTINUING_RESPONSE; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
// Parameter Length
|
|
connection->cmd_operands_length = 8;
|
|
big_endian_store_16(connection->cmd_operands, pos, 1);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
|
|
static uint8_t avrcp_controller_request_continue_response(avrcp_connection_t * connection){
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_REQUEST_CONTINUING_RESPONSE; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
// Parameter Length
|
|
connection->cmd_operands_length = 8;
|
|
big_endian_store_16(connection->cmd_operands, pos, 1);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
static void
|
|
avrcp_controller_handle_notification(avrcp_connection_t *connection, avrcp_command_type_t ctype, uint8_t *payload, uint16_t size) {
|
|
if (size < 1) return;
|
|
uint16_t pos = 0;
|
|
avrcp_notification_event_id_t event_id = (avrcp_notification_event_id_t) payload[pos++];
|
|
uint16_t event_mask = (1 << event_id);
|
|
uint16_t reset_event_mask = ~event_mask;
|
|
|
|
switch (ctype){
|
|
case AVRCP_CTYPE_RESPONSE_INTERIM:
|
|
// register as enabled
|
|
connection->notifications_enabled |= event_mask;
|
|
if ( (connection->initial_status_reported & event_mask) > 0 ){
|
|
return;
|
|
}
|
|
connection->initial_status_reported |= event_mask;
|
|
break;
|
|
case AVRCP_CTYPE_RESPONSE_CHANGED_STABLE:
|
|
// received change, event is considered deregistered
|
|
// we are re-enabling it automatically, if it is not
|
|
// explicitly disabled
|
|
connection->notifications_enabled &= reset_event_mask;
|
|
if (! (connection->notifications_to_deregister & event_mask)){
|
|
avrcp_controller_register_notification(connection, event_id);
|
|
} else {
|
|
connection->notifications_to_deregister &= reset_event_mask;
|
|
}
|
|
break;
|
|
default:
|
|
connection->notifications_to_register &= reset_event_mask;
|
|
connection->notifications_enabled &= reset_event_mask;
|
|
connection->notifications_to_deregister &= reset_event_mask;
|
|
break;
|
|
}
|
|
|
|
avrcp_controller_emit_notification_for_event_id(connection->avrcp_cid, event_id, ctype, payload + pos, size - pos);
|
|
}
|
|
|
|
#ifdef ENABLE_AVCTP_FRAGMENTATION
|
|
static void avctp_reassemble_message(avrcp_connection_t * connection, avctp_packet_type_t packet_type, uint8_t *packet, uint16_t size){
|
|
// after header (transaction label and packet type)
|
|
uint16_t pos;
|
|
uint16_t bytes_to_store;
|
|
|
|
switch (packet_type){
|
|
case AVCTP_START_PACKET:
|
|
if (size < 2) return;
|
|
|
|
// store header
|
|
pos = 0;
|
|
connection->avctp_reassembly_buffer[pos] = packet[pos];
|
|
pos++;
|
|
connection->avctp_reassembly_size = pos;
|
|
|
|
// NOTE: num packets not needed for reassembly, ignoring it does not pose security risk -> no need to store it
|
|
pos++;
|
|
|
|
// PID in reassembled packet is at offset 1, it will be read later after the avctp_reassemble_message with AVCTP_END_PACKET is called
|
|
|
|
bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size);
|
|
memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store);
|
|
connection->avctp_reassembly_size += bytes_to_store;
|
|
break;
|
|
|
|
case AVCTP_CONTINUE_PACKET:
|
|
case AVCTP_END_PACKET:
|
|
if (size < 1) return;
|
|
|
|
// store remaining data, ignore header
|
|
pos = 1;
|
|
bytes_to_store = btstack_min(size - pos, sizeof(connection->avctp_reassembly_buffer) - connection->avctp_reassembly_size);
|
|
memcpy(&connection->avctp_reassembly_buffer[connection->avctp_reassembly_size], &packet[pos], bytes_to_store);
|
|
connection->avctp_reassembly_size += bytes_to_store;
|
|
break;
|
|
|
|
default:
|
|
return;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static void avrcp_handle_l2cap_data_packet_for_signaling_connection(avrcp_connection_t * connection, uint8_t *packet, uint16_t size){
|
|
if (size < 6u) return;
|
|
uint8_t pdu_id;
|
|
avrcp_packet_type_t vendor_dependent_packet_type;
|
|
|
|
uint16_t pos = 0;
|
|
connection->last_confirmed_transaction_id = packet[pos] >> 4;
|
|
avrcp_frame_type_t frame_type = (avrcp_frame_type_t)((packet[pos] >> 1) & 0x01);
|
|
avctp_packet_type_t packet_type = (avctp_packet_type_t)((packet[pos] >> 2) & 0x03);
|
|
pos++;
|
|
|
|
if (frame_type != AVRCP_RESPONSE_FRAME) return;
|
|
|
|
switch (packet_type){
|
|
case AVCTP_SINGLE_PACKET:
|
|
break;
|
|
|
|
#ifdef ENABLE_AVCTP_FRAGMENTATION
|
|
case AVCTP_START_PACKET:
|
|
case AVCTP_CONTINUE_PACKET:
|
|
avctp_reassemble_message(connection, packet_type, packet, size);
|
|
return;
|
|
|
|
case AVCTP_END_PACKET:
|
|
avctp_reassemble_message(connection, packet_type, packet, size);
|
|
|
|
packet = connection->avctp_reassembly_buffer;
|
|
size = connection->avctp_reassembly_size;
|
|
break;
|
|
#endif
|
|
|
|
default:
|
|
return;
|
|
}
|
|
|
|
pos += 2; // PID
|
|
|
|
avrcp_command_type_t ctype = (avrcp_command_type_t) packet[pos++];
|
|
|
|
#ifdef ENABLE_LOG_INFO
|
|
uint8_t byte_value = packet[pos];
|
|
avrcp_subunit_type_t subunit_type = (avrcp_subunit_type_t) (byte_value >> 3);
|
|
avrcp_subunit_type_t subunit_id = (avrcp_subunit_type_t) (byte_value & 0x07);
|
|
#endif
|
|
pos++;
|
|
|
|
uint8_t opcode = packet[pos++];
|
|
uint16_t param_length;
|
|
|
|
switch (opcode){
|
|
case AVRCP_CMD_OPCODE_SUBUNIT_INFO:{
|
|
if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
|
|
connection->state = AVCTP_CONNECTION_OPENED;
|
|
|
|
#ifdef ENABLE_LOG_INFO
|
|
// page, extention code (1)
|
|
pos++;
|
|
uint8_t unit_type = packet[pos] >> 3;
|
|
uint8_t max_subunit_ID = packet[pos] & 0x07;
|
|
log_info("SUBUNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), unit_type 0x%02x, max_subunit_ID %d", ctype, subunit_type, subunit_id, opcode, unit_type, max_subunit_ID);
|
|
#endif
|
|
break;
|
|
}
|
|
case AVRCP_CMD_OPCODE_UNIT_INFO:{
|
|
if (connection->state != AVCTP_W2_RECEIVE_RESPONSE) return;
|
|
connection->state = AVCTP_CONNECTION_OPENED;
|
|
|
|
#ifdef ENABLE_LOG_INFO
|
|
// byte value 7 (1)
|
|
pos++;
|
|
uint8_t unit_type = packet[pos] >> 3;
|
|
uint8_t unit = packet[pos] & 0x07;
|
|
pos++;
|
|
uint32_t company_id = big_endian_read_24(packet, pos);
|
|
log_info("UNIT INFO response: ctype 0x%02x (0C), subunit_type 0x%02x (1F), subunit_id 0x%02x (07), opcode 0x%02x (30), unit_type 0x%02x, unit %d, company_id 0x%06" PRIx32,
|
|
ctype, subunit_type, subunit_id, opcode, unit_type, unit, company_id);
|
|
#endif
|
|
break;
|
|
}
|
|
case AVRCP_CMD_OPCODE_VENDOR_DEPENDENT:
|
|
|
|
if ((size - pos) < 7) return;
|
|
|
|
// Company ID (3)
|
|
pos += 3;
|
|
pdu_id = packet[pos++];
|
|
vendor_dependent_packet_type = (avrcp_packet_type_t)(packet[pos++] & 0x03);
|
|
param_length = big_endian_read_16(packet, pos);
|
|
pos += 2;
|
|
|
|
if ((size - pos) < param_length) return;
|
|
|
|
// handle asynchronous notifications, without changing state
|
|
if (pdu_id == AVRCP_PDU_ID_REGISTER_NOTIFICATION){
|
|
avrcp_controller_handle_notification(connection, ctype, packet + pos, size - pos);
|
|
break;
|
|
}
|
|
|
|
if (connection->state != AVCTP_W2_RECEIVE_RESPONSE){
|
|
log_info("AVRCP_CMD_OPCODE_VENDOR_DEPENDENT state %d", connection->state);
|
|
return;
|
|
}
|
|
connection->state = AVCTP_CONNECTION_OPENED;
|
|
|
|
log_info("VENDOR DEPENDENT response: pdu id 0x%02x, param_length %d, status %s", pdu_id, param_length, avrcp_ctype2str(ctype));
|
|
switch (pdu_id){
|
|
case AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE:{
|
|
uint8_t num_attributes = packet[pos++];
|
|
int i;
|
|
avrcp_repeat_mode_t repeat_mode = AVRCP_REPEAT_MODE_INVALID;
|
|
avrcp_shuffle_mode_t shuffle_mode = AVRCP_SHUFFLE_MODE_INVALID;
|
|
for (i = 0; i < num_attributes; i++){
|
|
uint8_t attribute_id = packet[pos++];
|
|
uint8_t value = packet[pos++];
|
|
switch (attribute_id){
|
|
case 0x02:
|
|
repeat_mode = (avrcp_repeat_mode_t) value;
|
|
break;
|
|
case 0x03:
|
|
shuffle_mode = (avrcp_shuffle_mode_t) value;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
avrcp_controller_emit_repeat_and_shuffle_mode(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, repeat_mode, shuffle_mode);
|
|
break;
|
|
}
|
|
|
|
case AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE:{
|
|
uint16_t offset = 0;
|
|
uint8_t event[6];
|
|
event[offset++] = HCI_EVENT_AVRCP_META;
|
|
event[offset++] = sizeof(event) - 2;
|
|
event[offset++] = AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE;
|
|
little_endian_store_16(event, offset, connection->avrcp_cid);
|
|
offset += 2;
|
|
event[offset++] = ctype;
|
|
(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
|
break;
|
|
}
|
|
|
|
case AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME:{
|
|
uint16_t offset = 0;
|
|
uint8_t event[7];
|
|
event[offset++] = HCI_EVENT_AVRCP_META;
|
|
event[offset++] = sizeof(event) - 2;
|
|
event[offset++] = AVRCP_SUBEVENT_SET_ABSOLUTE_VOLUME_RESPONSE;
|
|
little_endian_store_16(event, offset, connection->avrcp_cid);
|
|
offset += 2;
|
|
event[offset++] = ctype;
|
|
event[offset++] = packet[pos++];
|
|
(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
|
break;
|
|
}
|
|
|
|
case AVRCP_PDU_ID_GET_CAPABILITIES:{
|
|
avrcp_capability_id_t capability_id = (avrcp_capability_id_t) packet[pos++];
|
|
uint8_t capability_count = 0;
|
|
if (param_length > 1){
|
|
capability_count = packet[pos++];
|
|
}
|
|
uint16_t i;
|
|
uint16_t offset = 0;
|
|
uint8_t event[10];
|
|
|
|
switch (capability_id){
|
|
|
|
case AVRCP_CAPABILITY_ID_COMPANY:
|
|
for (i = 0; (i < capability_count) && ((size - pos) >= 3); i++){
|
|
uint32_t company_id = big_endian_read_24(packet, pos);
|
|
pos += 3;
|
|
log_info(" 0x%06" PRIx32 ", ", company_id);
|
|
|
|
offset = 0;
|
|
event[offset++] = HCI_EVENT_AVRCP_META;
|
|
event[offset++] = sizeof(event) - 2;
|
|
event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID;
|
|
little_endian_store_16(event, offset, connection->avrcp_cid);
|
|
offset += 2;
|
|
event[offset++] = ctype;
|
|
event[offset++] = 0;
|
|
little_endian_store_24(event, offset, company_id);
|
|
offset += 3;
|
|
(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
|
|
}
|
|
|
|
offset = 0;
|
|
event[offset++] = HCI_EVENT_AVRCP_META;
|
|
event[offset++] = sizeof(event) - 2;
|
|
event[offset++] = AVRCP_SUBEVENT_GET_CAPABILITY_COMPANY_ID_DONE;
|
|
little_endian_store_16(event, offset, connection->avrcp_cid);
|
|
offset += 2;
|
|
event[offset++] = ctype;
|
|
event[offset++] = 0;
|
|
(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, offset);
|
|
break;
|
|
|
|
case AVRCP_CAPABILITY_ID_EVENT:
|
|
for (i = 0; (i < capability_count) && ((size - pos) >= 1); i++){
|
|
uint8_t event_id = packet[pos++];
|
|
connection->remote_supported_notifications |= (1 << event_id);
|
|
}
|
|
if (connection->remote_supported_notifications_suppress_emit_result){
|
|
connection->remote_supported_notifications_suppress_emit_result = false;
|
|
break;
|
|
}
|
|
avrcp_controller_emit_supported_events(connection);
|
|
break;
|
|
|
|
default:
|
|
// ignore
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
case AVRCP_PDU_ID_GET_PLAY_STATUS:{
|
|
uint32_t song_length = big_endian_read_32(packet, pos);
|
|
pos += 4;
|
|
uint32_t song_position = big_endian_read_32(packet, pos);
|
|
pos += 4;
|
|
uint8_t play_status = packet[pos];
|
|
|
|
uint8_t event[15];
|
|
int offset = 0;
|
|
event[offset++] = HCI_EVENT_AVRCP_META;
|
|
event[offset++] = sizeof(event) - 2;
|
|
event[offset++] = AVRCP_SUBEVENT_PLAY_STATUS;
|
|
little_endian_store_16(event, offset, connection->avrcp_cid);
|
|
offset += 2;
|
|
event[offset++] = ctype;
|
|
little_endian_store_32(event, offset, song_length);
|
|
offset += 4;
|
|
little_endian_store_32(event, offset, song_position);
|
|
offset += 4;
|
|
event[offset++] = play_status;
|
|
(*avrcp_controller_context.avrcp_callback)(HCI_EVENT_PACKET, 0, event, sizeof(event));
|
|
break;
|
|
}
|
|
|
|
case AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES:{
|
|
switch (vendor_dependent_packet_type){
|
|
case AVRCP_START_PACKET:
|
|
case AVRCP_SINGLE_PACKET:
|
|
avrcp_parser_reset(connection);
|
|
connection->list_size = param_length;
|
|
connection->num_attributes = packet[pos++];
|
|
|
|
avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
|
|
if (vendor_dependent_packet_type == AVRCP_START_PACKET){
|
|
avrcp_controller_request_continue_response(connection);
|
|
}
|
|
break;
|
|
case AVRCP_CONTINUE_PACKET:
|
|
case AVRCP_END_PACKET:
|
|
connection->num_received_fragments++;
|
|
|
|
if (connection->num_received_fragments < connection->max_num_fragments){
|
|
avrcp_controller_parse_and_emit_element_attrs(packet+pos, size-pos, connection, ctype);
|
|
|
|
if (vendor_dependent_packet_type == AVRCP_CONTINUE_PACKET){
|
|
avrcp_controller_request_continue_response(connection);
|
|
}
|
|
} else {
|
|
avrcp_controller_emit_now_playing_info_event_done(avrcp_controller_context.avrcp_callback, connection->avrcp_cid, ctype, 1);
|
|
avrcp_parser_reset(connection);
|
|
avrcp_controller_request_abort_continuation(connection);
|
|
}
|
|
break;
|
|
default:
|
|
// TODO check
|
|
btstack_assert(false);
|
|
break;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
case AVRCP_CMD_OPCODE_PASS_THROUGH:{
|
|
if ((size - pos) < 1) return;
|
|
uint8_t operation_id = packet[pos++];
|
|
switch (connection->state){
|
|
case AVCTP_W2_RECEIVE_PRESS_RESPONSE:
|
|
// trigger release for simple command:
|
|
if (!connection->press_and_hold_cmd_active){
|
|
connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
|
|
break;
|
|
}
|
|
// for press and hold, send release if it just has been requested, otherwise, wait for next repeat
|
|
if (connection->press_and_hold_cmd_release){
|
|
connection->press_and_hold_cmd_release = false;
|
|
connection->state = AVCTP_W2_SEND_RELEASE_COMMAND;
|
|
} else {
|
|
connection->state = AVCTP_W4_STOP;
|
|
}
|
|
break;
|
|
case AVCTP_W2_RECEIVE_RESPONSE:
|
|
connection->state = AVCTP_CONNECTION_OPENED;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (connection->state == AVCTP_W4_STOP){
|
|
avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_START, connection->avrcp_cid, ctype, operation_id);
|
|
}
|
|
if (connection->state == AVCTP_CONNECTION_OPENED) {
|
|
// RELEASE response
|
|
operation_id = operation_id & 0x7F;
|
|
avrcp_controller_emit_operation_status(avrcp_controller_context.avrcp_callback, AVRCP_SUBEVENT_OPERATION_COMPLETE, connection->avrcp_cid, ctype, operation_id);
|
|
}
|
|
if (connection->state == AVCTP_W2_SEND_RELEASE_COMMAND){
|
|
// PRESS response
|
|
avrcp_controller_request_pass_through_release_control_cmd(connection);
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
// trigger pending notification reqistrations
|
|
if ((connection->state == AVCTP_CONNECTION_OPENED) && connection->notifications_to_register){
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
}
|
|
}
|
|
|
|
static void avrcp_controller_handle_can_send_now(avrcp_connection_t * connection){
|
|
switch (connection->state){
|
|
case AVCTP_W2_SEND_PRESS_COMMAND:
|
|
connection->state = AVCTP_W2_RECEIVE_PRESS_RESPONSE;
|
|
avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
|
|
return;
|
|
case AVCTP_W2_SEND_COMMAND:
|
|
case AVCTP_W2_SEND_RELEASE_COMMAND:
|
|
connection->state = AVCTP_W2_RECEIVE_RESPONSE;
|
|
avrcp_send_cmd(connection, AVRCP_SINGLE_PACKET);
|
|
return;
|
|
case AVCTP_W2_SEND_FRAGMENTED_COMMAND:
|
|
if (connection->cmd_operands_fragmented_pos == 0){
|
|
avrcp_send_cmd(connection, AVRCP_START_PACKET);
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
} else {
|
|
if ((connection->cmd_operands_fragmented_len - connection->cmd_operands_fragmented_pos) > avrcp_get_max_payload_size_for_packet_type(AVRCP_CONTINUE_PACKET)){
|
|
avrcp_send_cmd(connection, AVRCP_CONTINUE_PACKET);
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
} else {
|
|
connection->state = AVCTP_W2_RECEIVE_RESPONSE;
|
|
avrcp_send_cmd(connection, AVRCP_END_PACKET);
|
|
}
|
|
}
|
|
return;
|
|
default:
|
|
break;
|
|
}
|
|
// send register notification if queued
|
|
if (connection->notifications_to_register != 0){
|
|
uint8_t event_id;
|
|
for (event_id = 1; event_id <= AVRCP_NOTIFICATION_EVENT_VOLUME_CHANGED; event_id++){
|
|
if (connection->notifications_to_register & (1<<event_id)){
|
|
connection->notifications_to_register &= ~ (1 << event_id);
|
|
avrcp_send_register_notification(connection, event_id);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
|
|
avrcp_connection_t * connection;
|
|
|
|
switch (packet_type) {
|
|
case L2CAP_DATA_PACKET:
|
|
connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
|
|
avrcp_handle_l2cap_data_packet_for_signaling_connection(connection, packet, size);
|
|
break;
|
|
|
|
case HCI_EVENT_PACKET:
|
|
switch (hci_event_packet_get_type(packet)){
|
|
case L2CAP_EVENT_CAN_SEND_NOW:
|
|
connection = avrcp_get_connection_for_l2cap_signaling_cid_for_role(AVRCP_CONTROLLER, channel);
|
|
avrcp_controller_handle_can_send_now(connection);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
void avrcp_controller_create_sdp_record(uint8_t * service, uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){
|
|
avrcp_create_sdp_record(1, service, service_record_handle, avrcp_controller_supports_browsing(supported_features), supported_features, service_name, service_provider_name);
|
|
}
|
|
|
|
void avrcp_controller_init(void){
|
|
avrcp_controller_context.role = AVRCP_CONTROLLER;
|
|
avrcp_controller_context.packet_handler = avrcp_controller_packet_handler;
|
|
avrcp_register_controller_packet_handler(&avrcp_controller_packet_handler);
|
|
}
|
|
|
|
void avrcp_controller_deinit(void){
|
|
memset(&avrcp_controller_context, 0, sizeof(avrcp_context_t));
|
|
}
|
|
|
|
void avrcp_controller_register_packet_handler(btstack_packet_handler_t callback){
|
|
btstack_assert(callback != NULL);
|
|
avrcp_controller_context.avrcp_callback = callback;
|
|
}
|
|
|
|
|
|
uint8_t avrcp_controller_play(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_stop(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_pause(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_forward(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_backward(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_volume_up(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_volume_down(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_mute(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_skip(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_SKIP, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_fast_forward(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_rewind(uint16_t avrcp_cid){
|
|
return request_single_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
|
|
}
|
|
|
|
/* start continuous cmds */
|
|
|
|
uint8_t avrcp_controller_start_press_and_hold_cmd(uint16_t avrcp_cid, avrcp_operation_id_t operation_id){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, operation_id, 0);
|
|
}
|
|
|
|
uint8_t avrcp_controller_press_and_hold_play(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PLAY, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_stop(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_STOP, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_pause(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_PAUSE, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_forward(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FORWARD, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_backward(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_BACKWARD, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_fast_forward(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_FAST_FORWARD, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_rewind(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_REWIND, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_volume_up(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_UP, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_volume_down(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_VOLUME_DOWN, 0);
|
|
}
|
|
uint8_t avrcp_controller_press_and_hold_mute(uint16_t avrcp_cid){
|
|
return request_continuous_pass_through_press_control_cmd(avrcp_cid, AVRCP_OPERATION_ID_MUTE, 0);
|
|
}
|
|
|
|
/* stop continuous cmds */
|
|
uint8_t avrcp_controller_release_press_and_hold_cmd(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_stop_play: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
|
|
switch (connection->state){
|
|
// respond when we receive response for (repeated) press command
|
|
case AVCTP_W2_RECEIVE_PRESS_RESPONSE:
|
|
connection->press_and_hold_cmd_release = true;
|
|
break;
|
|
|
|
// release already sent or on the way, nothing to do
|
|
case AVCTP_W2_RECEIVE_RESPONSE:
|
|
case AVCTP_W2_SEND_RELEASE_COMMAND:
|
|
break;
|
|
|
|
// about to send next repeated press command or wait for it -> release right away
|
|
case AVCTP_W2_SEND_PRESS_COMMAND:
|
|
case AVCTP_W4_STOP:
|
|
return avrcp_controller_request_pass_through_release_control_cmd(connection);
|
|
|
|
// otherwise reject request
|
|
default:
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_enable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_play_status: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
return avrcp_controller_register_notification(connection, event_id);
|
|
}
|
|
|
|
uint8_t avrcp_controller_disable_notification(uint16_t avrcp_cid, avrcp_notification_event_id_t event_id){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_play_status: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
connection->notifications_to_deregister |= (1 << event_id);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_unit_info(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_unit_info: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_UNIT_INFO;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE;
|
|
memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
|
|
connection->cmd_operands_length = 5;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_subunit_info(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_unit_info: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_SUBUNIT_INFO;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_UNIT; //vendor unique
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID_IGNORE;
|
|
memset(connection->cmd_operands, 0xFF, connection->cmd_operands_length);
|
|
connection->cmd_operands[0] = 7; // page: 0, extention_code: 7
|
|
connection->cmd_operands_length = 5;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_get_supported_company_ids(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED){
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_COMPANY);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_get_supported_events(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED){
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
|
|
if (!connection->remote_supported_notifications_queried){
|
|
connection->remote_supported_notifications_queried = true;
|
|
avrcp_controller_get_capabilities_for_connection(connection, AVRCP_CAPABILITY_ID_EVENT);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
avrcp_controller_emit_supported_events(connection);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_get_play_status(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_play_status: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
|
|
connection->cmd_operands[3] = AVRCP_PDU_ID_GET_PLAY_STATUS;
|
|
connection->cmd_operands[4] = 0; // reserved(upper 6) | packet_type -> 0
|
|
big_endian_store_16(connection->cmd_operands, 5, 0); // parameter length
|
|
connection->cmd_operands_length = 7;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_set_addressed_player(uint16_t avrcp_cid, uint16_t addressed_player_id){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ADDRESSED_PLAYER; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 2);
|
|
pos += 2;
|
|
|
|
big_endian_store_16(connection->cmd_operands, pos, addressed_player_id);
|
|
pos += 2;
|
|
|
|
connection->cmd_operands_length = pos;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_get_element_attributes(uint16_t avrcp_cid, uint8_t num_attributes, avrcp_media_attribute_id_t * attributes){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
|
|
if (num_attributes >= AVRCP_MEDIA_ATTR_RESERVED) {
|
|
return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;
|
|
}
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_GET_ELEMENT_ATTRIBUTES; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 9);
|
|
pos += 2;
|
|
|
|
// write 8 bytes value
|
|
memset(connection->cmd_operands + pos, 0, 8); // identifier: PLAYING
|
|
pos += 8;
|
|
|
|
connection->cmd_operands[pos++] = num_attributes; // attribute count, if 0 get all attributes
|
|
|
|
int i;
|
|
for (i = 0; i < num_attributes; i++){
|
|
// every attribute is 4 bytes long
|
|
big_endian_store_32(connection->cmd_operands, pos, attributes[i]);
|
|
pos += 4;
|
|
}
|
|
|
|
connection->cmd_operands_length = pos;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_get_now_playing_info(uint16_t avrcp_cid){
|
|
return avrcp_controller_get_element_attributes(avrcp_cid, 0, NULL);
|
|
}
|
|
|
|
uint8_t avrcp_controller_set_absolute_volume(uint16_t avrcp_cid, uint8_t volume){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
|
|
//
|
|
// allow sending of multiple set abs volume commands without waiting for response
|
|
//
|
|
uint8_t status = ERROR_CODE_COMMAND_DISALLOWED;
|
|
switch (connection->state){
|
|
case AVCTP_CONNECTION_OPENED:
|
|
status = ERROR_CODE_SUCCESS;
|
|
break;
|
|
case AVCTP_W2_RECEIVE_RESPONSE:
|
|
// - is pending response also set abs volume
|
|
if (connection->command_opcode != AVRCP_CMD_OPCODE_VENDOR_DEPENDENT) break;
|
|
if (connection->command_type != AVRCP_CTYPE_CONTROL) break;
|
|
if (connection->subunit_type != AVRCP_SUBUNIT_TYPE_PANEL) break;
|
|
if (connection->subunit_id != AVRCP_SUBUNIT_ID) break;
|
|
if (connection->cmd_operands[3] != AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME) break;
|
|
// - is next transaction id valid in window
|
|
if (avrcp_controller_is_transaction_id_valid(connection, avrcp_controller_calc_next_transaction_label(connection->transaction_id_counter)) == false) break;
|
|
status = ERROR_CODE_SUCCESS;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (status != ERROR_CODE_SUCCESS) return status;
|
|
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_ABSOLUTE_VOLUME; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 1);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = volume;
|
|
|
|
connection->cmd_operands_length = pos;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_query_shuffle_and_repeat_modes(uint16_t avrcp_cid){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_STATUS;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
big_endian_store_24(connection->cmd_operands, 0, BT_SIG_COMPANY_ID);
|
|
connection->cmd_operands[3] = AVRCP_PDU_ID_GET_CURRENT_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
|
|
connection->cmd_operands[4] = 0;
|
|
big_endian_store_16(connection->cmd_operands, 5, 5); // parameter length
|
|
connection->cmd_operands[7] = 4; // NumPlayerApplicationSettingAttributeID
|
|
// PlayerApplicationSettingAttributeID1 AVRCP Spec, Appendix F, 133
|
|
connection->cmd_operands[8] = 0x01; // equalizer (1-OFF, 2-ON)
|
|
connection->cmd_operands[9] = 0x02; // repeat (1-off, 2-single track, 3-all tracks, 4-group repeat)
|
|
connection->cmd_operands[10] = 0x03; // shuffle (1-off, 2-all tracks, 3-group shuffle)
|
|
connection->cmd_operands[11] = 0x04; // scan (1-off, 2-all tracks, 3-group scan)
|
|
connection->cmd_operands_length = 12;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
static uint8_t avrcp_controller_set_current_player_application_setting_value(uint16_t avrcp_cid, uint8_t attr_id, uint8_t attr_value){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_get_capabilities: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_SET_PLAYER_APPLICATION_SETTING_VALUE; // PDU ID
|
|
connection->cmd_operands[pos++] = 0;
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 3);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = 2;
|
|
connection->cmd_operands_length = pos;
|
|
connection->cmd_operands[pos++] = attr_id;
|
|
connection->cmd_operands[pos++] = attr_value;
|
|
connection->cmd_operands_length = pos;
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_set_shuffle_mode(uint16_t avrcp_cid, avrcp_shuffle_mode_t mode){
|
|
if ((mode < AVRCP_SHUFFLE_MODE_OFF) || (mode > AVRCP_SHUFFLE_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
|
|
return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x03, mode);
|
|
}
|
|
|
|
uint8_t avrcp_controller_set_repeat_mode(uint16_t avrcp_cid, avrcp_repeat_mode_t mode){
|
|
if ((mode < AVRCP_REPEAT_MODE_OFF) || (mode > AVRCP_REPEAT_MODE_GROUP)) return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE;
|
|
return avrcp_controller_set_current_player_application_setting_value(avrcp_cid, 0x02, mode);
|
|
}
|
|
|
|
uint8_t avrcp_controller_play_item_for_scope(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED){
|
|
log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_PLAY_ITEM; // PDU ID
|
|
// reserved
|
|
connection->cmd_operands[pos++] = 0;
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 11);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = scope;
|
|
memset(&connection->cmd_operands[pos], 0, 8);
|
|
if (uid){
|
|
(void)memcpy(&connection->cmd_operands[pos], uid, 8);
|
|
}
|
|
pos += 8;
|
|
big_endian_store_16(connection->cmd_operands, pos, uid_counter);
|
|
pos += 2;
|
|
connection->cmd_operands_length = pos;
|
|
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_add_item_from_scope_to_now_playing_list(uint16_t avrcp_cid, uint8_t * uid, uint16_t uid_counter, avrcp_browsing_scope_t scope){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("Could not find a connection with cid 0%02x.", avrcp_cid);
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
if (connection->state != AVCTP_CONNECTION_OPENED){
|
|
log_error("Connection in wrong state, expected %d, received %d", AVCTP_CONNECTION_OPENED, connection->state);
|
|
return ERROR_CODE_COMMAND_DISALLOWED;
|
|
}
|
|
connection->state = AVCTP_W2_SEND_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_type = AVRCP_CTYPE_CONTROL;
|
|
connection->subunit_type = AVRCP_SUBUNIT_TYPE_PANEL;
|
|
connection->subunit_id = AVRCP_SUBUNIT_ID;
|
|
connection->command_opcode = AVRCP_CMD_OPCODE_VENDOR_DEPENDENT;
|
|
int pos = 0;
|
|
big_endian_store_24(connection->cmd_operands, pos, BT_SIG_COMPANY_ID);
|
|
pos += 3;
|
|
connection->cmd_operands[pos++] = AVRCP_PDU_ID_ADD_TO_NOW_PLAYING; // PDU ID
|
|
// reserved
|
|
connection->cmd_operands[pos++] = 0;
|
|
// Parameter Length
|
|
big_endian_store_16(connection->cmd_operands, pos, 11);
|
|
pos += 2;
|
|
connection->cmd_operands[pos++] = scope;
|
|
memset(&connection->cmd_operands[pos], 0, 8);
|
|
if (uid){
|
|
(void)memcpy(&connection->cmd_operands[pos], uid, 8);
|
|
}
|
|
pos += 8;
|
|
big_endian_store_16(connection->cmd_operands, pos, uid_counter);
|
|
pos += 2;
|
|
connection->cmd_operands_length = pos;
|
|
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_set_max_num_fragments(uint16_t avrcp_cid, uint8_t max_num_fragments){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_controller_play_item: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
connection->max_num_fragments = max_num_fragments;
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|
|
|
|
uint8_t avrcp_controller_send_custom_command(uint16_t avrcp_cid, avrcp_command_type_t command_type, avrcp_subunit_type_t subunit_type, avrcp_subunit_id_t subunit_id, avrcp_command_opcode_t command_opcode, const uint8_t * command_buffer, uint16_t command_len){
|
|
avrcp_connection_t * connection = avrcp_get_connection_for_avrcp_cid_for_role(AVRCP_CONTROLLER, avrcp_cid);
|
|
if (!connection){
|
|
log_error("avrcp_controller_play_item: could not find a connection.");
|
|
return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER;
|
|
}
|
|
|
|
if (connection->state != AVCTP_CONNECTION_OPENED) return ERROR_CODE_COMMAND_DISALLOWED;
|
|
connection->state = AVCTP_W2_SEND_FRAGMENTED_COMMAND;
|
|
|
|
connection->transaction_id = avrcp_controller_get_next_transaction_label(connection);
|
|
connection->command_opcode = command_opcode;
|
|
connection->command_type = command_type;
|
|
connection->subunit_type = subunit_type;
|
|
connection->subunit_id = subunit_id;
|
|
connection->cmd_operands_fragmented_buffer = command_buffer;
|
|
connection->cmd_operands_fragmented_pos = 0;
|
|
connection->cmd_operands_fragmented_len = command_len;
|
|
|
|
avrcp_request_can_send_now(connection, connection->l2cap_signaling_cid);
|
|
return ERROR_CODE_SUCCESS;
|
|
}
|