breadcast/breadcast-caststream-sys/vendor/openscreen/util/json/json_value.cc
Breadway 8c745d18e0
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Implement Cast Streaming mirroring, DLNA casting, daemon+GUI, and breadd integration
Builds out the full v1 scope: a vendored+patched openscreen subset for
low-latency Cast Streaming (Mirroring receiver 0F5096E8) alongside the
existing Cast V2/HLS and new DLNA/AVTransport casting paths, breadcastd's
Idle/Casting state machine with a private IPC socket, the breadcast GTK4
popup as a thin IPC client, and bread.cast.*/bread.command.cast.* breadd
integration (device discovery, start/stop, mirroring lifecycle events).
Also adds bakery/systemd/Forgejo CI packaging.

Validated end-to-end against a real Chromecast/Google TV: negotiated
Cast Streaming session, live pipeline playback, and daemon+GUI click-to-cast/
stop through the actual popup.
2026-08-03 09:07:21 +08:00

43 lines
1.3 KiB
C++

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "util/json/json_value.h"
namespace openscreen {
std::optional<int> MaybeGetInt(const Json::Value& message,
const char* first,
const char* last) {
const Json::Value* value = message.find(first, last);
std::optional<int> result;
if (value && value->isInt()) {
result = value->asInt();
}
return result;
}
std::optional<std::string_view> MaybeGetString(const Json::Value& message) {
if (message.isString()) {
const char* begin = nullptr;
const char* end = nullptr;
message.getString(&begin, &end);
if (begin && end >= begin) {
return std::string_view(begin, end - begin);
}
}
return std::nullopt;
}
std::optional<std::string_view> MaybeGetString(const Json::Value& message,
const char* first,
const char* last) {
const Json::Value* value = message.find(first, last);
std::optional<std::string_view> result;
if (value && value->isString()) {
return MaybeGetString(*value);
}
return result;
}
} // namespace openscreen