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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chromeos/ash/components/audio/audio_device_id.h"
#include "base/check.h"
#include "base/check_op.h"
#include "base/containers/flat_set.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
namespace ash {
namespace {
// Separator for audio device id string concatenation.
constexpr char kAudioDeviceListIdSeparator[] = ",";
// Separator for device id version.
constexpr char kDeviceVersionSeparator[] = " : ";
// A helper function to concatenate audio device ids.
const std::string AudioDeviceIdListToString(
const base::flat_set<std::string>& ids) {
std::stringstream s;
const char* sep = "";
for (const std::string& id : ids) {
s << sep << id;
sep = kAudioDeviceListIdSeparator;
}
return s.str();
}
} // namespace
std::string GetVersionedDeviceIdString(const AudioDevice& device, int version) {
CHECK(device.stable_device_id_version >= version);
DCHECK_GE(device.stable_device_id_version, 1);
DCHECK_LE(device.stable_device_id_version, 2);
bool use_deprecated_id = version == 1 && device.stable_device_id_version == 2;
uint64_t stable_device_id = use_deprecated_id
? device.deprecated_stable_device_id
: device.stable_device_id;
std::string version_prefix =
version == 2 ? std::string("2") + kDeviceVersionSeparator : "";
std::string device_id_string =
version_prefix +
base::NumberToString(stable_device_id &
static_cast<uint64_t>(0xffffffff)) +
kDeviceVersionSeparator + (device.is_input ? "1" : "0");
// Replace any periods from the device id string with a space, since setting
// names cannot contain periods.
std::replace(device_id_string.begin(), device_id_string.end(), '.', ' ');
return device_id_string;
}
std::string GetDeviceIdString(const AudioDevice& device) {
return GetVersionedDeviceIdString(device, device.stable_device_id_version);
}
std::optional<uint64_t> ParseDeviceId(const std::string& id_string) {
if (id_string.empty()) {
return std::nullopt;
}
std::vector<std::string> parts =
base::SplitString(id_string, kDeviceVersionSeparator,
base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
// If the device version is 2, the id string will be in part[1] otherwise
// part[0].
std::string id_str =
parts[0] == "2" && parts.size() > 1 ? parts[1] : parts[0];
int64_t id;
if (!base::StringToInt64(id_str, &id)) {
return std::nullopt;
}
return id;
}
const std::string GetDeviceSetIdString(const AudioDeviceList& devices) {
base::flat_set<std::string> ids;
for (const AudioDevice& device : devices) {
ids.insert(GetDeviceIdString(device));
}
return AudioDeviceIdListToString(ids);
}
} // namespace ash
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