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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.
117 lines
2.9 KiB
C++
117 lines
2.9 KiB
C++
// Copyright 2020 The Chromium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef CAST_STREAMING_PUBLIC_RECEIVER_MESSAGE_H_
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#define CAST_STREAMING_PUBLIC_RECEIVER_MESSAGE_H_
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#include <memory>
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#include <optional>
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#include <string>
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#include <string_view>
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#include <variant>
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#include <vector>
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#include "cast/streaming/public/answer_messages.h"
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#include "json/value.h"
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#include "util/osp_logging.h"
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namespace openscreen::cast {
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enum class MediaCapability {
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kAudio,
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kAac,
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kOpus,
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kVideo,
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k4k,
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kH264,
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kVp8,
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kVp9,
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kHevc,
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kAv1
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};
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struct ReceiverCapability {
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static constexpr int kRemotingVersionUnknown = -1;
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Json::Value ToJson() const;
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static ErrorOr<ReceiverCapability> Parse(const Json::Value& value);
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// The remoting version that the receiver uses.
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int remoting_version = kRemotingVersionUnknown;
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// Set of capabilities (e.g., ac3, 4k, hevc, vp9, dolby_vision, etc.).
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std::vector<MediaCapability> media_capabilities;
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};
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// To avoid collisions with legacy error values, all Open Screen receiver errors
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// are offset.
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struct ReceiverError {
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explicit ReceiverError(int code, std::string_view description = "");
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explicit ReceiverError(Error::Code code, std::string_view description = "");
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explicit ReceiverError(const Error& error);
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ReceiverError(const ReceiverError&);
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ReceiverError(ReceiverError&&) noexcept;
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ReceiverError& operator=(const ReceiverError&);
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ReceiverError& operator=(ReceiverError&&);
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~ReceiverError();
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Json::Value ToJson() const;
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static ErrorOr<ReceiverError> Parse(const Json::Value& value);
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Error ToError() const;
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// All Open Screen errors are offset by a fixed value to avoid overlapping
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// with legacy values.
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static constexpr int kOpenscreenErrorOffset = 10000;
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// Raw error code.
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int32_t code = -1;
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// Parsed openscreen::Error code. May be nullopt if not a match.
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std::optional<Error::Code> openscreen_code;
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// Error description.
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std::string description;
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};
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struct ReceiverMessage {
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public:
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// Receiver response message type.
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enum class Type {
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// Unknown message type.
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kUnknown,
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// Response to OFFER message.
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kAnswer,
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// Response to GET_CAPABILITIES message.
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kCapabilitiesResponse,
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// Rpc binary messages. The payload is base64-encoded.
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kRpc,
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// Input-related binary messages. The payload is base64-encoded.
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kInput,
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};
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static ErrorOr<ReceiverMessage> Parse(const Json::Value& value);
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ErrorOr<Json::Value> ToJson() const;
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Type type = Type::kUnknown;
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int32_t sequence_number = -1;
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bool valid = false;
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std::variant<std::monostate,
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Answer,
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std::vector<uint8_t>, // Binary-encoded protobuf message.
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ReceiverCapability,
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ReceiverError>
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body;
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};
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} // namespace openscreen::cast
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#endif // CAST_STREAMING_PUBLIC_RECEIVER_MESSAGE_H_
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