looper/playback_process.cpp

744 lines
27 KiB
C++

#include <google/protobuf/descriptor.h>
#include <google/protobuf/wire_format_lite.h>
#include <ipc/common.pb.h>
#include <ipc/internal.pb.h>
#include "playback_process.hpp"
#include "playback_backend.hpp"
#include <functional>
#include "rpc.hpp"
#include "thirdparty/CRC.hpp"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <exception>
#include <thread>
#include <config.h>
#include <signal.h>
#include "backend.hpp"
#include "util.hpp"
#include "log.hpp"
#include <chrono>
#include <fmt/core.h>
#include <fmt/format.h>
#ifdef __WINDOWS__
#include <windows.h>
#endif
#ifdef __HAIKU__
#include <kernel/scheduler.h>
#endif
#include <google/protobuf/message.h>
#include "util.hpp"
using namespace google::protobuf;
int sndfd;
int rcvfd;
extern char *executable_path;
void print_field_descriptor(const google::protobuf::FieldDescriptor *fdesc, const google::protobuf::Message &msg, size_t level) {
auto desc = msg.GetDescriptor();
auto reflection = msg.GetReflection();
static std::map<google::protobuf::FieldDescriptor::Label, const char*> labelNames = {
{(google::protobuf::FieldDescriptor::Label)0, "(Error)"},
{google::protobuf::FieldDescriptor::LABEL_OPTIONAL, "Optional"},
{google::protobuf::FieldDescriptor::LABEL_REPEATED, "Repeated"},
{google::protobuf::FieldDescriptor::LABEL_REQUIRED, "Required"}
};
DEBUG.writef_level(level, "- %s = %d", fdesc->full_name().c_str(), fdesc->number());
level++;
DEBUG.writef_level(level, "Type: %s (C++: %s)", fdesc->type_name(), fdesc->cpp_type_name());
std::string value = "(None)";
if (fdesc->has_default_value()) {
FORMAT_CPP_TYPE_LOWERCASE(fdesc, value, fdesc->default_value_);
DEBUG.writef_level(level, "Default value: %s", value.c_str());
}
DEBUG.writef_level(level, "Label: %s", labelNames.contains(fdesc->label()) ? labelNames[fdesc->label()] : labelNames[(google::protobuf::FieldDescriptor::Label)0]);
DEBUG.writef_level(level, "Index: %d", fdesc->index());
if (fdesc->type() == google::protobuf::FieldDescriptor::TYPE_MESSAGE || fdesc->type() == google::protobuf::FieldDescriptor::TYPE_GROUP) {
const google::protobuf::Descriptor *desc = fdesc->message_type();
DEBUG.writef_level(level, "Value: (Message)");
const Message &out_msg = reflection->GetMessage(msg, fdesc);
print_ipc_message(out_msg, level + 1);
return;
}
if (fdesc->type() == google::protobuf::FieldDescriptor::TYPE_BYTES) {
value = "(bytes)";
} else {
FORMAT_CPP_TYPE_TITLECASE(fdesc, value, reflection->Get, msg, fdesc);
}
DEBUG.writef_level(level, "Value: %s", value.c_str());
}
void print_ipc_message(const google::protobuf::Message &msg, size_t level) {
const google::protobuf::Descriptor *msgdesc = msg.GetDescriptor();
const google::protobuf::Reflection *reflect = msg.GetReflection();
DEBUG.writef_level(level, "Message type: %s", msg.GetTypeName().c_str());
std::vector<const FieldDescriptor *> descriptors;
reflect->ListFields(msg, &descriptors);
DEBUG.writef_level(level, "Message field count: %d", descriptors.size());
for (auto field : descriptors) {
print_field_descriptor(field, msg, level);
}
auto &unknown_fields = reflect->GetUnknownFields(msg);
DEBUG.writef_level(level, "Unknown fields: %d", unknown_fields.field_count());
}
void show_command(const std::string &cmdid, const google::protobuf::Message &msg) {
DEBUG.writefln("Command %s:", cmdid.c_str());
print_ipc_message(msg);
}
RenderResponseOrError PlaybackProcessServiceImpl::Render(const RenderCommand *cmd) {
RenderResponseOrError response;
auto cur_backend = cur_backend_lock.lock();
size_t maxlen = cmd->len();
auto lock = render_ptr.lock();
void *ptr = lock->get_byte_sized<void>(maxlen);
size_t len = cur_backend->render(ptr, maxlen);
if (len == 0) {
DEBUG.writeln("Didn't get any audio when rendering");
}
auto output = new RenderResponse();
output->set_data((const char*)ptr, len);
output->set_len(len);
response.set_allocated_output(output);
return response;
}
PropertyDataOrError PlaybackProcessServiceImpl::Get(const GetProperty *request) {
PropertyDataOrError response;
auto cur_backend = cur_backend_lock.get_unsafe();
PropertyData *data = new PropertyData();
ErrorResponse *err_maybe = nullptr;
switch (request->id()) {
case PropertyId::PlaybackRate: {
DoubleProperty property;
property.set_value(cur_backend->get_rate());
data->mutable_value()->PackFrom(property);
} break;
case PropertyId::StreamIdProperty: {
StreamId id;
id.set_id(cur_backend->get_stream_idx());
data->mutable_value()->PackFrom(id);
} break;
case PropertyId::FilenameProperty: {
StringProperty prop;
prop.set_value(std::filesystem::path(cur_backend->get_current_file().value_or("None")).filename().string());
data->mutable_value()->PackFrom(prop);
} break;
case PropertyId::BackendId: {
StringProperty prop;
prop.set_value(cur_backend->get_id());
data->mutable_value()->PackFrom(prop);
} break;
case PropertyId::BackendName: {
StringProperty prop;
prop.set_value(cur_backend->get_name());
data->mutable_value()->PackFrom(prop);
}
case PropertyId::FilePathProperty: {
StringProperty path;
path.set_value(cur_backend->get_current_file().value_or(""));
data->mutable_value()->PackFrom(path);
} break;
case PropertyId::SpecProperty: {
AudioSpec spec;
SDL_AudioSpec sdl_spec = cur_backend->get_spec();
audio_data_t sample_spec = sdl_to_sample_spec(sdl_spec.format);
DEBUG.writefln("Sample_spec.size: %d", sample_spec.size);
spec.set_bits(sample_spec.size * 8);
spec.set_channel_count(sdl_spec.channels);
spec.set_endian(sample_spec.endian ? EndianID::BIG : EndianID::LITTLE);
spec.set_format_type(sample_spec.is_float ? FormatType::FLOAT : sample_spec.is_signed ? FormatType::SIGNED : FormatType::UNSIGNED);
spec.set_sample_rate(sdl_spec.freq);
data->mutable_value()->PackFrom(spec);
} break;
case PropertyId::StreamsProperty: {
auto full_streams = cur_backend->get_streams();
if (request->has_idx()) {
size_t idx = (size_t)request->idx();
Stream stream;
if (idx >= full_streams.size()) {
ErrorResponse *err = new ErrorResponse();
err->set_id("invalid_index");
err->set_desc("An attempt to access an array element outside the boundaries of that array was detected.");
err->set_fatal(false);
err_maybe = err;
break;
}
auto backend_stream = full_streams[idx];
stream.set_id(backend_stream.id);
stream.set_len(backend_stream.length);
stream.set_title(backend_stream.name);
data->mutable_value()->PackFrom(stream);
} else {
StreamList out_streams;
for (auto backend_stream : full_streams) {
Stream stream = *out_streams.add_streams();
stream.set_id(backend_stream.id);
stream.set_len(backend_stream.length);
stream.set_title(backend_stream.name);
}
data->mutable_value()->PackFrom(out_streams);
}
} break;
case PropertyId::TitleProperty: {
StringProperty title;
title.set_value(cur_backend->get_title().value_or(""));
data->mutable_value()->PackFrom(title);
} break;
case PropertyId::PositionProperty: {
DoubleProperty pos;
pos.set_value(cur_backend->get_position());
data->mutable_value()->PackFrom(pos);
} break;
case PropertyId::BackendSpecific: {
if (!request->has_path()) {
ErrorResponse *err = new ErrorResponse();
err->set_id("param_missing");
err->set_fatal(false);
err->set_desc("Backend specific parameters require a path.");
err_maybe = err;
break;
}
auto output_maybe = cur_backend->get(request->path());
if (output_maybe.has_value()) {
data->mutable_value()->PackFrom(output_maybe.value());
} else {
ErrorResponse *err = new ErrorResponse;
err->set_id("not_found");
err->set_fatal(false);
err->set_desc("The backend reported that the property was not found.");
err_maybe = err;
}
} break;
case PropertyId::LengthProperty: {
DoubleProperty output;
output.set_value(cur_backend->get_length());
data->mutable_value()->PackFrom(output);
} break;
default: {
ErrorResponse *err = new ErrorResponse();
err->set_id("invalid_property");
err->set_fatal(false);
err->set_desc("The property requested was invalid or write-only");
err_maybe = err;
} break;
}
if (err_maybe != nullptr) {
delete data;
response.set_allocated_err(err_maybe);
} else {
response.set_allocated_output(data);
}
return response;
}
MaybeError PlaybackProcessServiceImpl::Set(const SetProperty *request) {
MaybeError response;
ErrorResponse *err_maybe = nullptr;
auto cur_backend = cur_backend_lock.lock();
switch (request->id()) {
case PropertyId::PlaybackRate: {
cur_backend->set_rate(resolve_any<DoubleProperty>(request->value())->value());
} break;
case PropertyId::PositionProperty: {
double value = resolve_any<DoubleProperty>(request->value())->value();
cur_backend->seek(value);
} break;
case PropertyId::StreamIdProperty: {
cur_backend->switch_stream(resolve_any<StreamId>(request->value())->id());
} break;
case PropertyId::BackendSpecific: {
if (!request->has_path()) {
ErrorResponse *err = new ErrorResponse();
err->set_id("param_missing");
err->set_fatal(false);
err->set_desc("Backend specific parameters require a path.");
err_maybe = err;
break;
}
if (!cur_backend->set(request->path(), request->value())) {
ErrorResponse *err = new ErrorResponse();
err->set_id("not_found");
err->set_fatal(false);
err->set_desc("The backend reported that the property being set was invalid for it.");
err_maybe = err;
}
} break;
default: {
ErrorResponse *err = new ErrorResponse();
err->set_id("invalid_property");
err->set_fatal(false);
err->set_desc("The property requested was invalid or read-only");
err_maybe = err;
} break;
}
if (err_maybe != nullptr) {
response.set_allocated_err(err_maybe);
}
return response;
}
ResetResponse PlaybackProcessServiceImpl::Reset(const ResetProperty *request) {
ResetResponse response;
auto cur_backend = cur_backend_lock.lock();
auto path = request->path();
std::optional<uint64_t> idx = {};
if (request->has_idx()) {
idx = request->idx();
}
auto output = cur_backend->reset(path);
if (output.has_value()) {
PropertyDataOrError *real_output = new PropertyDataOrError();
PropertyData *data = new PropertyData();
data->mutable_value()->PackFrom(output.value());
data->set_id(PropertyId::BackendSpecific);
data->clear_idx();
real_output->set_allocated_output(data);
response.set_allocated_value(real_output);
}
return response;
}
MaybeError PlaybackProcessServiceImpl::Quit(const QuitCmd *request) {
if (process == nullptr) return MaybeError();
process->done = true;
cur_backend_lock.get_unsafe()->cleanup();
return MaybeError();
}
PropertyList PlaybackProcessServiceImpl::GetPropertyList(const GetPropertyListCommand *cmd) {
std::vector<Property> list;
{
list = cur_backend_lock.lock()->get_property_list();
}
PropertyList output;
for (auto el : list) {
output.add_list()->CopyFrom(el);
}
return output;
}
MaybeError PlaybackProcessServiceImpl::Init(const InitCommand *cmd) {
MaybeError ret;
MaybeError *response = &ret;
auto lock = cur_backend_lock.lock();
render_ptr.lock().set(new DynPtr(), true);
lock.clear();
auto filename = cmd->filename();
if (!std::filesystem::exists(filename)) {
ErrorResponse *maybe_error = response->mutable_err();
maybe_error->set_desc("File not found");
maybe_error->set_id("not_found");
maybe_error->set_fatal(true);
process->done = true;
return ret;
}
auto idx = cmd->idx();
for (auto &backend : PlaybackBackendHelper()) {
DEBUG.writefln("Trying backend: %s", backend.second->get_name().c_str());
try {
backend.second->init(filename.c_str(), idx);
} catch (std::exception e) {
DEBUG.writeln("Cleaning up backend.");
backend.second->cleanup();
continue;
}
lock.set(backend.second, false);
DEBUG.writefln("Using backend: %s", backend.second->get_name().c_str());
break;
}
if (!cur_backend_lock.has_value()) {
ErrorResponse *maybe_error = response->mutable_err();
maybe_error->set_desc("Couldn't find a backend.");
maybe_error->set_id("no_backend_for_file");
maybe_error->set_fatal(true);
process->done = true;
DEBUG.writefln("Couldn't find any backend.");
return ret;
}
return ret;
}
void init_logging_subprocess(PlaybackProcess *proc) {
Looper::Log::init_logging();
}
PlaybackStream deserialize_stream(Stream serialized) {
PlaybackStream stream;
stream.id = serialized.id();
stream.length = serialized.len();
stream.name = serialized.title();
return stream;
}
Stream serialize_stream(PlaybackStream stream, std::optional<Stream*> stream_ptr = {}) {
Stream serialized;
serialized.set_id(stream.id);
serialized.set_len(stream.length);
serialized.set_title(stream.name);
if (stream_ptr.has_value()) {
*(stream_ptr.value()) = serialized;
}
return serialized;
}
std::vector<PlaybackStream> deserialize_stream_list(StreamList list) {
int len = list.streams_size();
std::vector<PlaybackStream> output;
output.reserve(len);
for (int i = 0; i < len; i++) {
Stream stream = list.streams(i);
output.push_back(deserialize_stream(stream));
}
return output;
}
StreamList serialize_stream_list(std::vector<PlaybackStream> streams) {
StreamList list;
for (auto input : streams) {
Stream *stream = list.add_streams();
serialize_stream(input, stream);
}
return list;
}
PlaybackProcess::PlaybackProcess(PlaybackProcess *parent) {
other_process = parent;
DEBUG.writeln("Playback backends: ");
for (auto &backend : PlaybackBackendHelper()) {
DEBUG.writefln(" - %s", backend.second->get_id().c_str());
}
DEBUG.writeln("Host process address: (in-process)");
}
PlaybackProcess::PlaybackProcess(std::vector<std::string> args) {
#ifdef __HAIKU__
set_thread_priority(find_thread(NULL), suggest_thread_priority(B_LIVE_AUDIO_MANIPULATION));
#endif
SDL_InitSubSystem(SDL_INIT_AUDIO);
done = false;
is_playback_process = true;
Looper::Log::init_logging();
init_playback_backends();
DEBUG.writeln("Playback backends: ");
for (auto &backend : PlaybackBackendHelper()) {
DEBUG.writefln(" - %s", backend.second->get_id().c_str());
}
init_audio_data();
send_fd = std::stoi(args[0]);
recv_fd = std::stoi(args[1]);
this->impl.process = this;
done = true;
}
PlaybackProcess::PlaybackProcess(std::string filename, int idx) {
// multi_process = Looper::Options::get_option<bool>("playback.multi_process", true);
multi_process = true;
done = false;
this->done = false;
if (multi_process) {
int fd1[2];
int fd2[2];
if (pipe(fd1) < 0) {
throw CustomException("Pipe creation failed!");
}
if (pipe(fd2) < 0) {
throw CustomException("Pipe creation failed!");
}
std::vector<std::string> args;
args.push_back(fmt::format("{}", fd1[1]));
args.push_back(fmt::format("{}", fd2[0]));
send_fd = fd2[1];
recv_fd = fd1[0];
pid = launch_self("playback", args);
} else {
this->impl.process = this;
other_process = new PlaybackProcess(this);
}
done = true;
DEBUG.writeln("Playback process started.");
InitCommand cmd;
cmd.set_filename(filename);
cmd.set_idx(idx);
RPCCall call;
call.mutable_init()->CopyFrom(cmd);
RPCResponse response = SendCommand(&call);
if (response.has_err()) {
this->init_failed = true;
delete other_process;
other_process = nullptr;
auto err = response.err();
throw CustomException(err.has_desc() ? err.desc() : err.id());
}
}
bool PlaybackProcess::process_running() {
if (is_playback_process) return true;
if (other_process != nullptr) return true;
if (!multi_process) return other_process != nullptr;
return kill(pid, 0) == 0;
}
RPCResponse PlaybackProcess::handle_command(RPCCall &call) {
SimpleAckResponse *ack = new SimpleAckResponse();
RPCResponse resp;
if (call.has_get()) {
PropertyDataOrError output = impl.Get(&call.get());
if (output.has_err()) {
resp.mutable_err()->CopyFrom(output.err());
} else {
resp.mutable_data()->CopyFrom(output.output());
}
} else if (call.has_init()) {
MaybeError output = impl.Init(&call.init());
if (output.has_err()) {
resp.mutable_err()->CopyFrom(output.err());
} else {
resp.set_allocated_ack(ack);
}
} else if (call.has_quit()) {
MaybeError output = impl.Quit(&call.quit());
if (output.has_err()) {
resp.mutable_err()->CopyFrom(output.err());
} else {
resp.set_allocated_ack(ack);
}
} else if (call.has_set()) {
MaybeError output = impl.Set(&call.set());
if (output.has_err()) {
resp.mutable_err()->CopyFrom(output.err());
} else {
resp.set_allocated_ack(ack);
}
} else if (call.has_reset()) {
ResetResponse output = impl.Reset(&call.reset());
resp.mutable_reset()->CopyFrom(output);
} else if (call.has_render()) {
RenderResponseOrError output = impl.Render(&call.render());
if (output.has_err()) {
resp.mutable_err()->CopyFrom(output.err());
} else {
resp.mutable_render()->CopyFrom(output.output());
}
} else if (call.has_get_property_list()) {
PropertyList output = impl.GetPropertyList(&call.get_property_list());
resp.mutable_property_list()->CopyFrom(output);
}
if (!resp.has_ack()) {
delete ack;
}
return resp;
}
void PlaybackProcess::run_playback_process() {
while (true) {
uint64_t len;
blocking_read(recv_fd, &len, sizeof(len));
std::string in_bytes = std::string(' ', len, std::allocator<char>());
in_bytes.resize(len);
blocking_read(recv_fd, in_bytes.data(), len);
RPCCall call;
if (!call.ParseFromString(in_bytes)) {
throw std::exception();
}
RPCResponse resp = handle_command(call);
std::string bytes = resp.SerializeAsString();
len = bytes.length();
ssize_t ret = -1;
blocking_write(send_fd, &len, sizeof(len));
blocking_write(send_fd, bytes.data(), bytes.length());
}
}
int looper_run_playback_process(std::vector<std::string> args) {
auto proc = PlaybackProcess(args);
proc.run_playback_process();
SDL_QuitSubSystem(SDL_INIT_AUDIO);
return 0;
}
PropertyData PlaybackProcess::get_property(PropertyId property, std::optional<uint64_t> idx) {
GetProperty get_property;
get_property.set_id(property);
if (idx.has_value()) {
get_property.set_idx(idx.value());
} else {
get_property.clear_idx();
}
RPCCall call;
call.mutable_get()->CopyFrom(get_property);
RPCResponse output = SendCommand(&call);
if (output.has_err()) {
throw std::exception();
}
return output.data();
}
void PlaybackProcess::set_property(PropertyId id, PropertyData data, std::optional<uint64_t> idx) {
SetProperty set_property;
set_property.set_id(id);
set_property.mutable_value()->CopyFrom(data.value());
if (idx.has_value()) {
set_property.set_idx(idx.value());
} else {
set_property.clear_idx();
}
RPCCall call;
call.mutable_set()->CopyFrom(set_property);
SendCommand(&call);
}
std::string PlaybackProcess::get_version_code() {
return std::string(TAG) +
#ifdef DEBUG_MODE
std::string("-debugmode") +
#endif
std::string("-at") + std::string(__TIME__);
}
double PlaybackProcess::get_position() {
return get_property_double(PropertyId::PositionProperty);
}
void PlaybackProcess::set_position(double value) {
DoubleProperty *pos = new DoubleProperty();
pos->set_value(value);
set_property_value<DoubleProperty>(PropertyId::PositionProperty, pos);
delete pos;
}
double PlaybackProcess::get_length() {
return get_property_double(PropertyId::LengthProperty);
}
size_t PlaybackProcess::get_stream_idx() {
StreamId *id = get_property_value<StreamId>(PropertyId::StreamIdProperty);
size_t output = id->id();
delete id;
return output;
}
void PlaybackProcess::set_stream_idx(size_t idx) {
StreamId *id = new StreamId();
id->set_id(idx);
set_property_value<StreamId>(PropertyId::StreamIdProperty, id);
delete id;
}
std::string PlaybackProcess::get_title() {
return get_property_string(PropertyId::TitleProperty);
}
std::string PlaybackProcess::get_file_path() {
return get_property_string(PropertyId::FilePathProperty);
}
std::string PlaybackProcess::get_file_name() {
return get_property_string(PropertyId::FilenameProperty);
}
RPCResponse PlaybackProcess::SendCommand(RPCCall *call) {
if (multi_process) {
std::lock_guard guard(ipc_mutex);
uint64_t len;
std::string str = call->SerializeAsString();
len = str.length();
blocking_write(send_fd, &len, sizeof(len));
blocking_write(send_fd, str.data(), str.length());
blocking_read(recv_fd, &len, sizeof(len));
str.resize(len);
blocking_read(recv_fd, str.data(), len);
RPCResponse resp;
resp.ParseFromString(str);
return resp;
} else {
return handle_command(*call);
}
}
PlaybackStream PlaybackProcess::get_playback_stream(size_t idx) {
auto *stream = get_property_value<Stream>(PropertyId::StreamsProperty, idx);
PlaybackStream output = deserialize_stream(*stream);
delete stream;
return output;
}
std::string PlaybackProcess::get_backend_id() {
return get_property_string(PropertyId::BackendId);
}
std::string PlaybackProcess::get_backend_name() {
return get_property_string(PropertyId::BackendName);
}
std::vector<PlaybackStream> PlaybackProcess::get_playback_streams() {
auto *list = get_property_value<StreamList>(PropertyId::StreamsProperty);
auto output = deserialize_stream_list(*list);
delete list;
return output;
}
bool PlaybackProcess::set_property(std::string path, google::protobuf::Any value) {
SetProperty set_property;
set_property.set_id(PropertyId::BackendSpecific);
set_property.mutable_value()->CopyFrom(value);
set_property.set_path(path);
RPCCall call;
call.mutable_set()->CopyFrom(set_property);
RPCResponse output = SendCommand(&call);
if (output.has_err()) {
return false;
}
return true;
}
std::optional<google::protobuf::Any> PlaybackProcess::get_property(std::string path) {
GetProperty get_property;
get_property.set_id(PropertyId::BackendSpecific);
get_property.set_path(path);
RPCCall call;
call.mutable_get()->CopyFrom(get_property);
RPCResponse output = SendCommand(&call);
if (output.has_err()) {
return {};
}
return output.data().value();
}
size_t PlaybackProcess::render(void *buf, size_t maxlen) {
RenderCommand rend_cmd = RenderCommand();
rend_cmd.set_len(maxlen);
RPCResponse response;
RPCCall call;
call.mutable_render()->CopyFrom(rend_cmd);
response = SendCommand(&call);
if (response.has_err()) {
ERROR.writefln("Error rendering audio: %s", response.err().id().c_str());
return 0;
} else {
std::string data = response.render().data();
if (data.length() == 0) {
WARNING.writeln("Rendering audio didn't produce anything!");
}
if (data.length() != response.render().len()) {
WARNING.writefln("Rendering audio size mismatch: Intended != Provided\nIntended: %d\nProvided: %d", response.render().len(), data.length());
}
memcpy(buf, data.data(), data.length());
return data.length();
}
}
AudioSpec *PlaybackProcess::get_audio_spec() {
return get_property_value<AudioSpec>(PropertyId::SpecProperty);
}
PlaybackProcess::~PlaybackProcess() {
if (init_failed || !process_running()) {
done = true;
return;
}
QuitCmd quit_cmd;
RPCCall call;
call.mutable_quit()->CopyFrom(quit_cmd);
SendCommand(&call);
done = true;
if (multi_process) kill(pid, SIGHUP);
}
void PlaybackProcess::threadfunc() {
while (!process_running()) {
std::this_thread::yield();
if (done) return;
}
while (true) {
if (!process_running()) {
done = true;
started.notify_all();
}
if (done) {
return;
}
std::this_thread::yield();
}
}
double PlaybackProcess::get_cached_rate() {
return get_property_double(PropertyId::PlaybackRate);
}
void PlaybackProcess::set_rate(double value) {
set_property_double(PropertyId::PlaybackRate, value);
}
std::vector<Property> PlaybackProcess::get_property_list() {
RPCCall call;
GetPropertyListCommand cmd;
call.mutable_get_property_list()->CopyFrom(cmd);
RPCResponse resp = SendCommand(&call);
if (resp.has_property_list()) {
std::vector<Property> output;
for (size_t i = 0; i < resp.property_list().list_size(); i++) {
output.push_back(resp.property_list().list(i));
}
return output;
} else {
return std::vector<Property>();
}
}