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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CAST_STREAMING_RECEIVER_MESSAGE_H_
#define CAST_STREAMING_RECEIVER_MESSAGE_H_
#include <memory>
#include <string>
#include <vector>
#include "absl/types/variant.h"
#include "cast/streaming/answer_messages.h"
#include "json/value.h"
#include "util/osp_logging.h"
namespace openscreen {
namespace cast {
enum class MediaCapability {
kAudio,
kAac,
kOpus,
kVideo,
k4k,
kH264,
kVp8,
kVp9,
kHevc,
kAv1
};
struct ReceiverCapability {
static constexpr int kRemotingVersionUnknown = -1;
Json::Value ToJson() const;
static ErrorOr<ReceiverCapability> Parse(const Json::Value& value);
// The remoting version that the receiver uses.
int remoting_version = kRemotingVersionUnknown;
// Set of capabilities (e.g., ac3, 4k, hevc, vp9, dolby_vision, etc.).
std::vector<MediaCapability> media_capabilities;
};
struct ReceiverError {
Json::Value ToJson() const;
static ErrorOr<ReceiverError> Parse(const Json::Value& value);
// Error code.
// TODO(issuetracker.google.com/184766188): Error codes should be well
// defined.
int32_t code = -1;
// Error description.
std::string description;
};
struct ReceiverMessage {
public:
// Receiver response message type.
enum class Type {
// Unknown message type.
kUnknown,
// Response to OFFER message.
kAnswer,
// Response to GET_CAPABILITIES message.
kCapabilitiesResponse,
// Rpc binary messages. The payload is base64-encoded.
kRpc,
};
static ErrorOr<ReceiverMessage> Parse(const Json::Value& value);
ErrorOr<Json::Value> ToJson() const;
Type type = Type::kUnknown;
int32_t sequence_number = -1;
bool valid = false;
absl::variant<absl::monostate,
Answer,
std::vector<uint8_t>, // Binary-encoded RPC message.
ReceiverCapability,
ReceiverError>
body;
};
} // namespace cast
} // namespace openscreen
#endif // CAST_STREAMING_RECEIVER_MESSAGE_H_
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