267 lines
8.3 KiB
C++
267 lines
8.3 KiB
C++
#pragma once
|
|
|
|
#include <chrono>
|
|
#include <climits>
|
|
#include <cstdint>
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
namespace muninn_media_wire {
|
|
|
|
inline constexpr const char *ReceiverFeedbackSchema = "muninn.media_receiver_feedback.v1";
|
|
|
|
class MsgpackWriter {
|
|
public:
|
|
const std::vector<uint8_t> &bytes() const { return bytes_; }
|
|
|
|
void write_raw(const std::vector<uint8_t> &value)
|
|
{
|
|
bytes_.insert(bytes_.end(), value.begin(), value.end());
|
|
}
|
|
|
|
void write_nil() { bytes_.push_back(0xc0); }
|
|
|
|
void write_bool(bool value) { bytes_.push_back(value ? 0xc3 : 0xc2); }
|
|
|
|
void write_u64(uint64_t value)
|
|
{
|
|
if (value <= 0x7f) {
|
|
bytes_.push_back(static_cast<uint8_t>(value));
|
|
} else if (value <= 0xff) {
|
|
bytes_.push_back(0xcc);
|
|
bytes_.push_back(static_cast<uint8_t>(value));
|
|
} else if (value <= 0xffff) {
|
|
bytes_.push_back(0xcd);
|
|
write_be16_value(static_cast<uint16_t>(value));
|
|
} else if (value <= 0xffffffffull) {
|
|
bytes_.push_back(0xce);
|
|
write_be32_value(static_cast<uint32_t>(value));
|
|
} else {
|
|
bytes_.push_back(0xcf);
|
|
write_be64_value(value);
|
|
}
|
|
}
|
|
|
|
void write_i64(int64_t value)
|
|
{
|
|
if (value >= 0) {
|
|
write_u64(static_cast<uint64_t>(value));
|
|
return;
|
|
}
|
|
if (value >= -32) {
|
|
bytes_.push_back(static_cast<uint8_t>(0xe0 | (value + 32)));
|
|
} else if (value >= INT8_MIN) {
|
|
bytes_.push_back(0xd0);
|
|
bytes_.push_back(static_cast<uint8_t>(value));
|
|
} else if (value >= INT16_MIN) {
|
|
bytes_.push_back(0xd1);
|
|
write_be16_value(static_cast<uint16_t>(value));
|
|
} else if (value >= INT32_MIN) {
|
|
bytes_.push_back(0xd2);
|
|
write_be32_value(static_cast<uint32_t>(value));
|
|
} else {
|
|
bytes_.push_back(0xd3);
|
|
write_be64_value(static_cast<uint64_t>(value));
|
|
}
|
|
}
|
|
|
|
void write_string(const std::string &value)
|
|
{
|
|
const auto length = value.size();
|
|
if (length <= 31) {
|
|
bytes_.push_back(static_cast<uint8_t>(0xa0 | length));
|
|
} else if (length <= 0xff) {
|
|
bytes_.push_back(0xd9);
|
|
bytes_.push_back(static_cast<uint8_t>(length));
|
|
} else if (length <= 0xffff) {
|
|
bytes_.push_back(0xda);
|
|
write_be16_value(static_cast<uint16_t>(length));
|
|
} else {
|
|
bytes_.push_back(0xdb);
|
|
write_be32_value(static_cast<uint32_t>(length));
|
|
}
|
|
bytes_.insert(bytes_.end(), value.begin(), value.end());
|
|
}
|
|
|
|
void write_binary(const std::vector<uint8_t> &value)
|
|
{
|
|
const auto length = value.size();
|
|
if (length <= 0xff) {
|
|
bytes_.push_back(0xc4);
|
|
bytes_.push_back(static_cast<uint8_t>(length));
|
|
} else if (length <= 0xffff) {
|
|
bytes_.push_back(0xc5);
|
|
write_be16_value(static_cast<uint16_t>(length));
|
|
} else {
|
|
bytes_.push_back(0xc6);
|
|
write_be32_value(static_cast<uint32_t>(length));
|
|
}
|
|
bytes_.insert(bytes_.end(), value.begin(), value.end());
|
|
}
|
|
|
|
void write_array_len(uint32_t length)
|
|
{
|
|
if (length <= 15) {
|
|
bytes_.push_back(static_cast<uint8_t>(0x90 | length));
|
|
} else if (length <= 0xffff) {
|
|
bytes_.push_back(0xdc);
|
|
write_be16_value(static_cast<uint16_t>(length));
|
|
} else {
|
|
bytes_.push_back(0xdd);
|
|
write_be32_value(length);
|
|
}
|
|
}
|
|
|
|
void write_map_len(uint32_t length)
|
|
{
|
|
if (length <= 15) {
|
|
bytes_.push_back(static_cast<uint8_t>(0x80 | length));
|
|
} else if (length <= 0xffff) {
|
|
bytes_.push_back(0xde);
|
|
write_be16_value(static_cast<uint16_t>(length));
|
|
} else {
|
|
bytes_.push_back(0xdf);
|
|
write_be32_value(length);
|
|
}
|
|
}
|
|
|
|
private:
|
|
std::vector<uint8_t> bytes_;
|
|
|
|
void write_be16_value(uint16_t value)
|
|
{
|
|
bytes_.push_back(static_cast<uint8_t>((value >> 8) & 0xff));
|
|
bytes_.push_back(static_cast<uint8_t>(value & 0xff));
|
|
}
|
|
|
|
void write_be32_value(uint32_t value)
|
|
{
|
|
bytes_.push_back(static_cast<uint8_t>((value >> 24) & 0xff));
|
|
bytes_.push_back(static_cast<uint8_t>((value >> 16) & 0xff));
|
|
bytes_.push_back(static_cast<uint8_t>((value >> 8) & 0xff));
|
|
bytes_.push_back(static_cast<uint8_t>(value & 0xff));
|
|
}
|
|
|
|
void write_be64_value(uint64_t value)
|
|
{
|
|
write_be32_value(static_cast<uint32_t>((value >> 32) & 0xffffffffull));
|
|
write_be32_value(static_cast<uint32_t>(value & 0xffffffffull));
|
|
}
|
|
};
|
|
|
|
inline std::string feedback_observed_at()
|
|
{
|
|
const auto now = std::chrono::system_clock::now().time_since_epoch();
|
|
const auto millis = std::chrono::duration_cast<std::chrono::milliseconds>(now).count();
|
|
return "unix-ms:" + std::to_string(millis);
|
|
}
|
|
|
|
inline void write_string_array(MsgpackWriter &writer, const std::vector<std::string> &values)
|
|
{
|
|
writer.write_array_len(static_cast<uint32_t>(values.size()));
|
|
for (const auto &value : values) {
|
|
writer.write_string(value);
|
|
}
|
|
}
|
|
|
|
inline void write_u64_array(MsgpackWriter &writer, const std::vector<uint64_t> &values)
|
|
{
|
|
writer.write_array_len(static_cast<uint32_t>(values.size()));
|
|
for (const auto value : values) {
|
|
writer.write_u64(value);
|
|
}
|
|
}
|
|
|
|
inline std::vector<uint8_t> encode_receiver_feedback_payload(
|
|
const std::string &stream_id,
|
|
const std::string &session_id,
|
|
uint64_t frame_id,
|
|
const std::vector<std::string> &missing_chunk_keys,
|
|
bool requested_keyframe,
|
|
const std::string &observed_at)
|
|
{
|
|
MsgpackWriter record;
|
|
record.write_array_len(11);
|
|
record.write_string(stream_id);
|
|
record.write_string(session_id);
|
|
record.write_string("starfire.obs");
|
|
if (frame_id > 0) {
|
|
record.write_u64(frame_id - 1);
|
|
} else {
|
|
record.write_nil();
|
|
}
|
|
write_u64_array(record, {});
|
|
write_u64_array(record, {frame_id});
|
|
record.write_bool(requested_keyframe);
|
|
record.write_i64(0);
|
|
record.write_i64(0);
|
|
record.write_string(observed_at);
|
|
write_string_array(record, missing_chunk_keys);
|
|
|
|
const std::string record_key = stream_id + ":" + session_id + ":feedback:starfire.obs";
|
|
const std::string message_id =
|
|
"muninn-media:" + std::string(ReceiverFeedbackSchema) + ":" + record_key;
|
|
|
|
MsgpackWriter document;
|
|
document.write_map_len(9);
|
|
document.write_string("schemaId");
|
|
document.write_string(ReceiverFeedbackSchema);
|
|
document.write_string("recordKey");
|
|
document.write_string(record_key);
|
|
document.write_string("storedAt");
|
|
document.write_string(observed_at);
|
|
document.write_string("payloadEncoding");
|
|
document.write_string("messagepack");
|
|
document.write_string("payload");
|
|
document.write_binary(record.bytes());
|
|
document.write_string("sourceRuntimeId");
|
|
document.write_string("starfire");
|
|
document.write_string("sourceAgentId");
|
|
document.write_nil();
|
|
document.write_string("sourceRole");
|
|
document.write_string("mimir.obs");
|
|
document.write_string("tags");
|
|
write_string_array(document, {"muninn.media"});
|
|
|
|
MsgpackWriter wire;
|
|
wire.write_map_len(3);
|
|
wire.write_string("schemaVersion");
|
|
wire.write_string("cultnet.document_put_raw.v0");
|
|
wire.write_string("messageId");
|
|
wire.write_string(message_id);
|
|
wire.write_string("document");
|
|
wire.write_raw(document.bytes());
|
|
return wire.bytes();
|
|
}
|
|
|
|
inline std::vector<uint8_t> encode_receiver_feedback_payload(
|
|
const std::string &stream_id,
|
|
const std::string &session_id,
|
|
uint64_t frame_id,
|
|
const std::vector<std::string> &missing_chunk_keys,
|
|
bool requested_keyframe)
|
|
{
|
|
return encode_receiver_feedback_payload(
|
|
stream_id,
|
|
session_id,
|
|
frame_id,
|
|
missing_chunk_keys,
|
|
requested_keyframe,
|
|
feedback_observed_at());
|
|
}
|
|
|
|
inline std::vector<uint8_t> encode_receiver_feedback_payload(
|
|
const std::string &stream_id,
|
|
const std::string &session_id,
|
|
uint64_t frame_id,
|
|
const std::vector<std::string> &missing_chunk_keys)
|
|
{
|
|
return encode_receiver_feedback_payload(
|
|
stream_id,
|
|
session_id,
|
|
frame_id,
|
|
missing_chunk_keys,
|
|
true);
|
|
}
|
|
|
|
} // namespace muninn_media_wire
|