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/*
* Copyright 2021 HIMSA II K/S - www.himsa.com.
* Represented by EHIMA - www.ehima.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "has_ctp.h"
namespace le_audio {
namespace has {
static bool ParsePresetGenericUpdate(uint16_t& len, const uint8_t* value,
HasCtpNtf& ntf) {
if (len < sizeof(ntf.prev_index) + HasPreset::kCharValueMinSize) {
LOG(ERROR) << "Invalid preset value length=" << +len
<< " for generic update.";
return false;
}
STREAM_TO_UINT8(ntf.index, value);
len -= 1;
ntf.preset = HasPreset::FromCharacteristicValue(len, value);
return true;
}
static bool ParsePresetIndex(uint16_t& len, const uint8_t* value,
HasCtpNtf& ntf) {
if (len < sizeof(ntf.index)) {
LOG(ERROR) << __func__ << "Invalid preset value length=" << +len
<< " for generic update.";
return false;
}
STREAM_TO_UINT8(ntf.index, value);
len -= 1;
return true;
}
static bool ParsePresetReadResponse(uint16_t& len, const uint8_t* value,
HasCtpNtf& ntf) {
if (len < sizeof(ntf.is_last) + HasPreset::kCharValueMinSize) {
LOG(ERROR) << "Invalid preset value length=" << +len;
return false;
}
STREAM_TO_UINT8(ntf.is_last, value);
len -= 1;
ntf.preset = HasPreset::FromCharacteristicValue(len, value);
return true;
}
static bool ParsePresetChanged(uint16_t len, const uint8_t* value,
HasCtpNtf& ntf) {
if (len < sizeof(ntf.is_last) + sizeof(ntf.change_id)) {
LOG(ERROR) << __func__ << "Invalid preset value length=" << +len;
return false;
}
uint8_t change_id;
STREAM_TO_UINT8(change_id, value);
len -= 1;
if (change_id > static_cast<std::underlying_type_t<PresetCtpChangeId>>(
PresetCtpChangeId::CHANGE_ID_MAX_)) {
LOG(ERROR) << __func__ << "Invalid preset chenge_id=" << change_id;
return false;
}
ntf.change_id = PresetCtpChangeId(change_id);
STREAM_TO_UINT8(ntf.is_last, value);
len -= 1;
switch (ntf.change_id) {
case PresetCtpChangeId::PRESET_GENERIC_UPDATE:
return ParsePresetGenericUpdate(len, value, ntf);
case PresetCtpChangeId::PRESET_AVAILABLE:
return ParsePresetIndex(len, value, ntf);
case PresetCtpChangeId::PRESET_UNAVAILABLE:
return ParsePresetIndex(len, value, ntf);
case PresetCtpChangeId::PRESET_DELETED:
return ParsePresetIndex(len, value, ntf);
default:
return false;
}
return true;
}
std::optional<HasCtpNtf> HasCtpNtf::FromCharacteristicValue(
uint16_t len, const uint8_t* value) {
if (len < 3) {
LOG(ERROR) << __func__ << " Invalid Cp notification.";
return std::nullopt;
}
uint8_t op;
STREAM_TO_UINT8(op, value);
--len;
if ((op != static_cast<std::underlying_type_t<PresetCtpOpcode>>(
PresetCtpOpcode::READ_PRESET_RESPONSE)) &&
(op != static_cast<std::underlying_type_t<PresetCtpOpcode>>(
PresetCtpOpcode::PRESET_CHANGED))) {
LOG(ERROR) << __func__
<< ": Received invalid opcode in control point notification: "
<< ++op;
return std::nullopt;
}
HasCtpNtf ntf;
ntf.opcode = PresetCtpOpcode(op);
if (ntf.opcode == le_audio::has::PresetCtpOpcode::PRESET_CHANGED) {
if (!ParsePresetChanged(len, value, ntf)) return std::nullopt;
} else if (ntf.opcode ==
le_audio::has::PresetCtpOpcode::READ_PRESET_RESPONSE) {
if (!ParsePresetReadResponse(len, value, ntf)) return std::nullopt;
}
return ntf;
}
uint16_t HasCtpOp::last_op_id_ = 0;
std::vector<uint8_t> HasCtpOp::ToCharacteristicValue() const {
std::vector<uint8_t> value;
auto* pp = value.data();
switch (opcode) {
case PresetCtpOpcode::READ_PRESETS:
value.resize(3);
pp = value.data();
UINT8_TO_STREAM(
pp, static_cast<std::underlying_type_t<PresetCtpOpcode>>(opcode));
UINT8_TO_STREAM(pp, index);
UINT8_TO_STREAM(pp, num_of_indices);
break;
case PresetCtpOpcode::SET_ACTIVE_PRESET:
case PresetCtpOpcode::SET_ACTIVE_PRESET_SYNC:
value.resize(2);
pp = value.data();
UINT8_TO_STREAM(
pp, static_cast<std::underlying_type_t<PresetCtpOpcode>>(opcode));
UINT8_TO_STREAM(pp, index);
break;
case PresetCtpOpcode::SET_NEXT_PRESET:
case PresetCtpOpcode::SET_NEXT_PRESET_SYNC:
case PresetCtpOpcode::SET_PREV_PRESET:
case PresetCtpOpcode::SET_PREV_PRESET_SYNC:
value.resize(1);
pp = value.data();
UINT8_TO_STREAM(
pp, static_cast<std::underlying_type_t<PresetCtpOpcode>>(opcode));
break;
case PresetCtpOpcode::WRITE_PRESET_NAME: {
auto name_str = name.value_or("");
value.resize(2 + name_str.length());
pp = value.data();
UINT8_TO_STREAM(
pp, static_cast<std::underlying_type_t<PresetCtpOpcode>>(opcode));
UINT8_TO_STREAM(pp, index);
memcpy(pp, name_str.c_str(), name_str.length());
} break;
default:
LOG_ASSERT(false) << __func__ << "Bad control point operation!";
break;
}
return value;
}
#define CASE_SET_PTR_TO_TOKEN_STR(en) \
case (en): \
ch = #en; \
break;
std::ostream& operator<<(std::ostream& out, const PresetCtpChangeId value) {
const char* ch = 0;
switch (value) {
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpChangeId::PRESET_GENERIC_UPDATE);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpChangeId::PRESET_DELETED);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpChangeId::PRESET_AVAILABLE);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpChangeId::PRESET_UNAVAILABLE);
default:
ch = "INVALID_CHANGE_ID";
break;
}
return out << ch;
}
std::ostream& operator<<(std::ostream& out, const PresetCtpOpcode value) {
const char* ch = 0;
switch (value) {
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::READ_PRESETS);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::READ_PRESET_RESPONSE);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::PRESET_CHANGED);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::WRITE_PRESET_NAME);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_ACTIVE_PRESET);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_NEXT_PRESET);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_PREV_PRESET);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_ACTIVE_PRESET_SYNC);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_NEXT_PRESET_SYNC);
CASE_SET_PTR_TO_TOKEN_STR(PresetCtpOpcode::SET_PREV_PRESET_SYNC);
default:
ch = "NOT_A_VALID_OPCODE";
break;
}
return out << ch;
}
#undef SET_CH_TO_TOKENIZED
std::ostream& operator<<(std::ostream& out, const HasCtpOp& op) {
out << "\"HasCtpOp\": {";
if (std::holds_alternative<int>(op.addr_or_group)) {
out << "\"group_id\": " << std::get<int>(op.addr_or_group);
} else if (std::holds_alternative<RawAddress>(op.addr_or_group)) {
out << "\"address\": \"" << std::get<RawAddress>(op.addr_or_group) << "\"";
} else {
out << "\"bad value\"";
}
out << ", \"id\": " << op.op_id << ", \"opcode\": \"" << op.opcode << "\""
<< ", \"index\": " << +op.index << ", \"name\": \""
<< op.name.value_or("<none>") << "\""
<< "}";
return out;
}
std::ostream& operator<<(std::ostream& out, const HasCtpNtf& ntf) {
out << "\"HasCtpNtf\": {";
out << "\"opcode\": \"" << ntf.opcode << "\"";
if (ntf.opcode == PresetCtpOpcode::READ_PRESET_RESPONSE) {
out << ", \"is_last\": " << (ntf.is_last ? "\"True\"" : "\"False\"");
if (ntf.preset.has_value()) {
out << ", \"preset\": " << ntf.preset.value();
} else {
out << ", \"preset\": \"None\"";
}
} else if (ntf.opcode == PresetCtpOpcode::PRESET_CHANGED) {
out << ", \"change_id\": " << ntf.change_id;
out << ", \"is_last\": " << (ntf.is_last ? "\"True\"" : "\"False\"");
switch (ntf.change_id) {
case PresetCtpChangeId::PRESET_GENERIC_UPDATE:
out << ", \"prev_index\": " << +ntf.prev_index;
if (ntf.preset.has_value()) {
out << ", \"preset\": {" << ntf.preset.value() << "}";
} else {
out << ", \"preset\": \"None\"";
}
break;
case PresetCtpChangeId::PRESET_DELETED:
FALLTHROUGH;
case PresetCtpChangeId::PRESET_AVAILABLE:
FALLTHROUGH;
case PresetCtpChangeId::PRESET_UNAVAILABLE:
out << ", \"index\": " << +ntf.index;
break;
default:
break;
}
}
out << "}";
return out;
}
} // namespace has
} // namespace le_audio
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