ref: e5b73212f6addcfdb5e306df63d7135e543c4f8d
src/components/ble/MusicService.cpp
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/* Copyright (C) 2020-2021 JF, Adam Pigg, Avamander This file is part of InfiniTime. InfiniTime is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. InfiniTime is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include "components/ble/MusicService.h" #include "components/ble/NimbleController.h" #include <cstring> namespace { // 0000yyxx-78fc-48fe-8e23-433b3a1942d0 constexpr ble_uuid128_t CharUuid(uint8_t x, uint8_t y) { return ble_uuid128_t {.u = {.type = BLE_UUID_TYPE_128}, .value = {0xd0, 0x42, 0x19, 0x3a, 0x3b, 0x43, 0x23, 0x8e, 0xfe, 0x48, 0xfc, 0x78, x, y, 0x00, 0x00}}; } // 00000000-78fc-48fe-8e23-433b3a1942d0 constexpr ble_uuid128_t BaseUuid() { return CharUuid(0x00, 0x00); } constexpr ble_uuid128_t msUuid {BaseUuid()}; constexpr ble_uuid128_t msEventCharUuid {CharUuid(0x01, 0x00)}; constexpr ble_uuid128_t msStatusCharUuid {CharUuid(0x02, 0x00)}; constexpr ble_uuid128_t msArtistCharUuid {CharUuid(0x03, 0x00)}; constexpr ble_uuid128_t msTrackCharUuid {CharUuid(0x04, 0x00)}; constexpr ble_uuid128_t msAlbumCharUuid {CharUuid(0x05, 0x00)}; constexpr ble_uuid128_t msPositionCharUuid {CharUuid(0x06, 0x00)}; constexpr ble_uuid128_t msTotalLengthCharUuid {CharUuid(0x07, 0x00)}; constexpr ble_uuid128_t msTrackNumberCharUuid {CharUuid(0x08, 0x00)}; constexpr ble_uuid128_t msTrackTotalCharUuid {CharUuid(0x09, 0x00)}; constexpr ble_uuid128_t msPlaybackSpeedCharUuid {CharUuid(0x0a, 0x00)}; constexpr ble_uuid128_t msRepeatCharUuid {CharUuid(0x0b, 0x00)}; constexpr ble_uuid128_t msShuffleCharUuid {CharUuid(0x0c, 0x00)}; constexpr uint8_t MaxStringSize {40}; int MusicCallback(uint16_t /*conn_handle*/, uint16_t /*attr_handle*/, struct ble_gatt_access_ctxt* ctxt, void* arg) { return static_cast<Pinetime::Controllers::MusicService*>(arg)->OnCommand(ctxt); } } Pinetime::Controllers::MusicService::MusicService(Pinetime::Controllers::NimbleController& nimble) : nimble(nimble) { characteristicDefinition[0] = {.uuid = &msEventCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_NOTIFY, .val_handle = &eventHandle}; characteristicDefinition[1] = {.uuid = &msStatusCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[2] = {.uuid = &msTrackCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[3] = {.uuid = &msArtistCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[4] = {.uuid = &msAlbumCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[5] = {.uuid = &msPositionCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[6] = {.uuid = &msTotalLengthCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[7] = {.uuid = &msTotalLengthCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[8] = {.uuid = &msTrackNumberCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[9] = {.uuid = &msTrackTotalCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[10] = {.uuid = &msPlaybackSpeedCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[11] = {.uuid = &msRepeatCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[12] = {.uuid = &msShuffleCharUuid.u, .access_cb = MusicCallback, .arg = this, .flags = BLE_GATT_CHR_F_WRITE | BLE_GATT_CHR_F_READ}; characteristicDefinition[13] = {0}; serviceDefinition[0] = {.type = BLE_GATT_SVC_TYPE_PRIMARY, .uuid = &msUuid.u, .characteristics = characteristicDefinition}; serviceDefinition[1] = {0}; } void Pinetime::Controllers::MusicService::Init() { uint8_t res = 0; res = ble_gatts_count_cfg(serviceDefinition); ASSERT(res == 0); res = ble_gatts_add_svcs(serviceDefinition); ASSERT(res == 0); } int Pinetime::Controllers::MusicService::OnCommand(struct ble_gatt_access_ctxt* ctxt) { if (ctxt->op == BLE_GATT_ACCESS_OP_WRITE_CHR) { size_t notifSize = OS_MBUF_PKTLEN(ctxt->om); size_t bufferSize = notifSize; if (notifSize > MaxStringSize) { bufferSize = MaxStringSize; } char data[bufferSize + 1]; os_mbuf_copydata(ctxt->om, 0, bufferSize, data); if (notifSize > bufferSize) { data[bufferSize - 1] = '.'; data[bufferSize - 2] = '.'; data[bufferSize - 3] = '.'; } data[bufferSize] = '\0'; char* s = &data[0]; if (ble_uuid_cmp(ctxt->chr->uuid, &msArtistCharUuid.u) == 0) { artistName = s; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msTrackCharUuid.u) == 0) { trackName = s; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msAlbumCharUuid.u) == 0) { albumName = s; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msStatusCharUuid.u) == 0) { playing = s[0]; // These variables need to be updated, because the progress may not be updated immediately, // leading to getProgress() returning an incorrect position. if (playing) { trackProgressUpdateTime = xTaskGetTickCount(); } else { trackProgress += static_cast<int>((static_cast<float>(xTaskGetTickCount() - trackProgressUpdateTime) / 1024.0f) * getPlaybackSpeed()); } } else if (ble_uuid_cmp(ctxt->chr->uuid, &msRepeatCharUuid.u) == 0) { repeat = s[0]; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msShuffleCharUuid.u) == 0) { shuffle = s[0]; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msPositionCharUuid.u) == 0) { trackProgress = (s[0] << 24) | (s[1] << 16) | (s[2] << 8) | s[3]; trackProgressUpdateTime = xTaskGetTickCount(); } else if (ble_uuid_cmp(ctxt->chr->uuid, &msTotalLengthCharUuid.u) == 0) { trackLength = (s[0] << 24) | (s[1] << 16) | (s[2] << 8) | s[3]; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msTrackNumberCharUuid.u) == 0) { trackNumber = (s[0] << 24) | (s[1] << 16) | (s[2] << 8) | s[3]; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msTrackTotalCharUuid.u) == 0) { tracksTotal = (s[0] << 24) | (s[1] << 16) | (s[2] << 8) | s[3]; } else if (ble_uuid_cmp(ctxt->chr->uuid, &msPlaybackSpeedCharUuid.u) == 0) { playbackSpeed = static_cast<float>(((s[0] << 24) | (s[1] << 16) | (s[2] << 8) | s[3])) / 100.0f; } } return 0; } std::string Pinetime::Controllers::MusicService::getAlbum() const { return albumName; } std::string Pinetime::Controllers::MusicService::getArtist() const { return artistName; } std::string Pinetime::Controllers::MusicService::getTrack() const { return trackName; } bool Pinetime::Controllers::MusicService::isPlaying() const { return playing; } float Pinetime::Controllers::MusicService::getPlaybackSpeed() const { return playbackSpeed; } int Pinetime::Controllers::MusicService::getProgress() const { if (isPlaying()) { return trackProgress + static_cast<int>((static_cast<float>(xTaskGetTickCount() - trackProgressUpdateTime) / 1024.0f) * getPlaybackSpeed()); } return trackProgress; } int Pinetime::Controllers::MusicService::getTrackLength() const { return trackLength; } void Pinetime::Controllers::MusicService::event(char event) { auto* om = ble_hs_mbuf_from_flat(&event, 1); uint16_t connectionHandle = nimble.connHandle(); if (connectionHandle == 0 || connectionHandle == BLE_HS_CONN_HANDLE_NONE) { return; } ble_gattc_notify_custom(connectionHandle, eventHandle, om); } |