Add ZSound MIME type and other updates

CMakeLists.txt

@@ -119,6 +119,7 @@ if(DEFINED ANDROID_NDK)
 	set(USE_SPEEX OFF CACHE BOOL "" FORCE)
 	set(USE_G719 OFF CACHE BOOL "" FORCE)
 	set(USE_VORBIS OFF CACHE BOOL "" FORCE)
+	set(BUILD_FMT ON CACHE BOOL "" FORCE)
 endif()
 if (BUILD_SDL)
 	set(SDL_SHARED OFF CACHE BOOL "" FORCE)

add-mime-types.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+OLDDIR="$(pwd)"
+cd "$(dirname "$0")"
+xdg-mime install assets/zsm-mime.xml
+cd "$OLDDIR"

assets/com.complecwaft.Looper.desktop

@@ -7,7 +7,7 @@ GenericName=Looping audio player
 Exec=looper -n %f
 Icon=looper
 StartupWMClass=looper;com.complecwaft.Looper;com.complecwaft.Looper.GTK
-MimeType=audio/x-wav;audio/ogg;audio/x-vorbis+ogg;audio/x-opus+ogg;audio/mpeg;audio/flac;audio/xm;audio/x-mod;
+MimeType=audio/x-wav;audio/ogg;audio/x-vorbis+ogg;audio/x-opus+ogg;audio/mpeg;audio/flac;audio/xm;audio/x-mod;audio/x-zsound;
 Categories=Audio;AudioVideo;
 Terminal=false
 SingleMainWindow=true

assets/zsm-mime.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0"?>
+<mime-info  xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
+	<mime-type type="audio/x-zsound">
+		<comment>ZSound file for the Commander X16</comment>
+		<glob pattern="*.zsm"/>
+		<magic priority="50">
+			<match type="string" value="zm" offset="0" />
+		</magic>
+	</mime-type>
+</mime-info>
+

backends/playback/zsm/properties.inc

@@ -0,0 +1,10 @@
+#define BOOL_PROPERTY(name, default_value) _PROPERTY(name, bool, default_value)
+#define DOUBLE_PROPERTY(name, default_value) _PROPERTY(name, double, default_value)
+BOOL_PROPERTY(pcm_enable, true)
+BOOL_PROPERTY(psg_enable, true)
+BOOL_PROPERTY(fm_enable, true)
+DOUBLE_PROPERTY(pcm_volume, 1.0)
+DOUBLE_PROPERTY(psg_volume, 1.0)
+DOUBLE_PROPERTY(fm_volume, 1.0)
+#undef BOOL_PROPERTY
+#undef DOUBLE_PROPERTY

backends/playback/zsm/zsm_backend.cpp

@@ -17,17 +17,26 @@ extern "C" {
 #define HZ (AUDIO_SAMPLERATE)
 #define BUFFERS 32
 #define _PROPERTY(name, type, default_value) \
-bool ZsmBackend::name() { \
+type ZsmBackend::name() { \
 	std::optional<google::protobuf::Any> value_maybe = get(#name); \
 	if (value_maybe.has_value()) { \
-		return resolve_##type(value_maybe.value()); \
+		return resolve_value<type>(value_maybe.value()); \
 	} \
 	return default_value; \
 }
-#define BOOL_PROPERTY(name, default_value) _PROPERTY(name, bool, default_value)
+
-BOOL_PROPERTY(pcm_enable, true)
+#include "properties.inc"
-BOOL_PROPERTY(psg_enable, true)
+#undef _PROPERTY
-BOOL_PROPERTY(fm_enable, true)
+std::vector<Property> ZsmBackend::get_property_list() {
+	std::vector<Property> properties;
+	properties.push_back(make_property(PropertyType::Boolean, "Enable PCM channel", "pcm_enable"));
+	properties.push_back(make_property(PropertyType::Boolean, "Enable PSG channels", "psg_enable"));
+	properties.push_back(make_property(PropertyType::Boolean, "Enable FM channels", "fm_enable"));
+	properties.push_back(make_property(PropertyType::Double, "Volume of PCM channel", "pcm_volume", make_hint(0.0, 1.0)));
+	properties.push_back(make_property(PropertyType::Double, "Volume of PSG channels", "psg_volume", make_hint(0.0, 1.0)));
+	properties.push_back(make_property(PropertyType::Double, "Volume of FM channels", "fm_volume", make_hint(0.0, 1.0)));
+	return properties;
+}
 void ZsmBackend::load(const char *filename) {
 	memset(&spec, 0, sizeof(spec));
     spec.format = AUDIO_S16SYS;
@@ -129,6 +138,22 @@ void ZsmBackend::load(const char *filename) {
     loop_start = this->loop_pos;
     fm_stream = SDL_NewAudioStream(AUDIO_S16SYS, 2, YM_FREQ, AUDIO_S16SYS, 2, PSG_FREQ);
     DEBUG.writefln("fm_stream: %ld -> %ld", YM_FREQ, PSG_FREQ);
+#define _PROPERTY(name, type, default_value) \
+	{ \
+		std::string type_str = #type; \
+		google::protobuf::Any value; \
+		if (type_str == "bool") { \
+			BooleanProperty value_b; \
+			value_b.set_value(default_value); \
+			value.PackFrom(value_b); \
+		} else if (type_str == "double") { \
+			DoubleProperty value_d; \
+			value_d.set_value(default_value); \
+			value.PackFrom(value_d); \
+		} \
+		property_defaults[#name] = value; \
+	}
+#include "properties.inc"
 }
 extern SDL_AudioSpec obtained;
 void ZsmBackend::switch_stream(int idx) {
@@ -399,3 +424,61 @@ double ZsmBackend::get_position() {
 int ZsmBackend::get_stream_idx() {
     return 0;
 }
+
+void ZsmBackend::audio_step(size_t samples) {
+	if (samples == 0) return;
+ 	while (remain != 0 && pcm_fifo_avail() < samples) {
+ 		if (pcm_read_rate() == 0) break;
+        if ((--remain) == 0) {
+            if (islooped) {
+             	cur = loop;
+                remain = loop_rem;
+            } else {
+            	break;
+            }
+        }
+        size_t oldpos = file->get_pos();
+        uint8_t sample = audio_sample[cur++];
+        pcm_write_fifo(sample);
+    }
+    samples *= 2;
+	int16_t *psg_ptr = psg_buf.get_item_sized<int16_t>(samples);
+    int16_t *pcm_ptr = pcm_buf.get_item_sized<int16_t>(samples);
+	psg_render(psg_ptr, samples / 2);
+    pcm_render(pcm_ptr, samples / 2);
+    int16_t *out_ptr = out_buf.get_item_sized<int16_t>(samples);
+    // The exact amount of samples needed for the stream.
+    double ratio = ((double)YM_FREQ) / ((double)PSG_FREQ);
+    size_t needed_samples = ((size_t)std::floor(samples * ratio)) / 2;
+    int16_t *ym_ptr = ym_buf.get_item_sized<int16_t>(needed_samples * 2);
+    YM_stream_update(ym_ptr, needed_samples);
+    assert(SDL_AudioStreamPut(fm_stream, ym_ptr, needed_samples * 2 * sizeof(int16_t)) == 0);
+    while (SDL_AudioStreamAvailable(fm_stream) < ((samples + 2) * sizeof(int16_t))) {
+        YM_stream_update(ym_ptr, 1);
+        assert(SDL_AudioStreamPut(fm_stream, ym_ptr, 2 * sizeof(int16_t)) == 0);
+    }
+    int16_t *ym_resample_ptr = ym_resample_buf.get_item_sized<int16_t>(samples);
+    ssize_t ym_resample_len = SDL_AudioStreamGet(fm_stream, ym_resample_ptr, (samples + 2) * sizeof(int16_t));
+    assert(ym_resample_len >= 0);
+    ym_resample_len /= sizeof(int16_t);
+    for (size_t i = 0; i < samples / 2; i++) {
+        size_t j = i * 2;
+        int16_t psg[2] = {(int16_t)(psg_ptr[j] >> 1), (int16_t)(psg_ptr[j + 1] >> 1)};
+        int16_t pcm[2] = {(int16_t)(pcm_ptr[j] >> 2), (int16_t)(pcm_ptr[j + 1] >> 2)};
+        if (!pcm_enable()) memset(pcm, 0, sizeof(pcm));
+        if (!psg_enable()) memset(psg, 0, sizeof(psg));
+        pcm[0] *= pcm_volume();
+        pcm[1] *= pcm_volume();
+        psg[0] *= psg_volume();
+        psg[1] *= psg_volume();
+        int16_t vera[2] = {(int16_t)(psg[0] + pcm[0]), (int16_t)(psg[1] + pcm[1])};
+        int16_t fm[2] = {ym_resample_ptr[j], ym_resample_ptr[j + 1]};
+        if (!fm_enable()) memset(fm, 0, sizeof(fm));
+        fm[0] *= fm_volume();
+        fm[1] *= fm_volume();
+        int16_t mix[2] = {(int16_t)(vera[0] + (fm[0] >> 1)), (int16_t)(vera[1] + (fm[1] >> 1))};
+        out_ptr[j++] = mix[0];
+        out_ptr[j++] = mix[1];
+    }
+    audio_buf.push(out_ptr, samples);
+}

backends/playback/zsm/zsm_backend.hpp

@@ -96,60 +96,10 @@ class ZsmBackend : public PlaybackBackend {
     bool pcm_enable();
     bool psg_enable();
     bool fm_enable();
-    int16_t combine_audio(int16_t a, int16_t b) {
+    double pcm_volume();
-        return (int16_t)((((int32_t)a) + ((int32_t)b)) >> 1);
+    double psg_volume();
-    }
+    double fm_volume();
-    void audio_step(size_t samples) {
+    void audio_step(size_t samples);
-    	if (samples == 0) return;
-     	while (remain != 0 && pcm_fifo_avail() < samples) {
-     		if (pcm_read_rate() == 0) break;
-            if ((--remain) == 0) {
-                if (islooped) {
-                 	cur = loop;
-                    remain = loop_rem;
-                } else {
-                	break;
-                }
-            }
-            size_t oldpos = file->get_pos();
-            uint8_t sample = audio_sample[cur++];
-            pcm_write_fifo(sample);
-        }
-        samples *= 2;
-    	int16_t *psg_ptr = psg_buf.get_item_sized<int16_t>(samples);
-        int16_t *pcm_ptr = pcm_buf.get_item_sized<int16_t>(samples);
-    	psg_render(psg_ptr, samples / 2);
-        pcm_render(pcm_ptr, samples / 2);
-        int16_t *out_ptr = out_buf.get_item_sized<int16_t>(samples);
-        // The exact amount of samples needed for the stream.
-        double ratio = ((double)YM_FREQ) / ((double)PSG_FREQ);
-        size_t needed_samples = ((size_t)std::floor(samples * ratio)) / 2;
-        int16_t *ym_ptr = ym_buf.get_item_sized<int16_t>(needed_samples * 2);
-        YM_stream_update(ym_ptr, needed_samples);
-        assert(SDL_AudioStreamPut(fm_stream, ym_ptr, needed_samples * 2 * sizeof(int16_t)) == 0);
-        while (SDL_AudioStreamAvailable(fm_stream) < ((samples + 2) * sizeof(int16_t))) {
-            YM_stream_update(ym_ptr, 1);
-            assert(SDL_AudioStreamPut(fm_stream, ym_ptr, 2 * sizeof(int16_t)) == 0);
-        }
-        int16_t *ym_resample_ptr = ym_resample_buf.get_item_sized<int16_t>(samples);
-        ssize_t ym_resample_len = SDL_AudioStreamGet(fm_stream, ym_resample_ptr, (samples + 2) * sizeof(int16_t));
-        assert(ym_resample_len >= 0);
-        ym_resample_len /= sizeof(int16_t);
-        for (size_t i = 0; i < samples / 2; i++) {
-            size_t j = i * 2;
-            int16_t psg[2] = {psg_ptr[j] >> 1, psg_ptr[j + 1] >> 1};
-            int16_t pcm[2] = {pcm_ptr[j] >> 1, pcm_ptr[j + 1] >> 1};
-            if (!pcm_enable()) memset(pcm, 0, sizeof(pcm));
-            if (!psg_enable()) memset(psg, 0, sizeof(psg));
-            int16_t vera[2] = {psg[0] + pcm[0], psg[1] + pcm[1]};
-            int16_t fm[2] = {ym_resample_ptr[j], ym_resample_ptr[j + 1]};
-            if (!fm_enable()) memset(fm, 0, sizeof(fm));
-            int16_t mix[2] = {vera[0] + (fm[0] >> 1), vera[1] + (fm[1] >> 1)};
-            out_ptr[j++] = mix[0];
-            out_ptr[j++] = mix[1];
-        }
-        audio_buf.push(out_ptr, samples);
-    }
     inline void *reserve(size_t len) {
        	return (void*)audio_buf.reserve(len);
     }
@@ -183,6 +133,7 @@ class ZsmBackend : public PlaybackBackend {
     inline std::string get_name() override {
         return "ZSM player";
     }
+    std::vector<Property> get_property_list() override;
     void seek(double position) override;
     void load(const char *filename) override;
     void switch_stream(int idx) override;

backends/ui/imgui/main.cpp

@@ -4,6 +4,7 @@
 #include <assets/assets.h>
 #include <filesystem>
 #include <options.hpp>
+#include "imgui/imgui.h"
 #include "ui_backend.hpp"
 #include "thirdparty/CLI11.hpp"
 #include <web_functions.hpp>
@@ -141,6 +142,9 @@ void MainLoop::FileLoaded() {
         SetWindowTitle("Looper");
     }
     streams = playback->get_streams();
+    properties = playback->get_property_list();
+    boolean_properties.clear();
+    double_properties.clear();
 }
 void MainLoop::GuiFunction() {
 #if defined(__EMSCRIPTEN__)||defined(__ANDROID__)
@@ -195,10 +199,10 @@ void MainLoop::GuiFunction() {
                 show_demo_window = !show_demo_window;
                 set_option<double>("ui.imgui.demo_window", show_demo_window);
             }
-            ImGui::EndMenu();
             if (ImGui::MenuItem(_TR_CTX("Main menu | Debug", "Edit properties"), nullptr, property_editor)) {
             	property_editor = !property_editor;
             }
+            ImGui::EndMenu();
         }
         if (ImGui::BeginMenu(_TRI_CTX(ICON_FK_INFO_CIRCLE, "Main menu", "Help"))) {
             if (ImGui::MenuItem(_TRI_CTX(ICON_FK_INFO, "Main menu | Help", "About"), nullptr, about_window)) {
@@ -304,17 +308,88 @@ void MainLoop::GuiFunction() {
     	ImGui::SetNextWindowDockID(dockid);
      	ImGui::Begin("Property Editor", &property_editor);
       	{
-       		static std::string property_name;
+         	for (auto property : properties) {
-       		static bool property_value;
+          		ImGui::PushID(property.path().c_str());
-       		ImGui::InputText("Property Name", &property_name);
+          		bool valid = false;
-         	ImGui::Checkbox("Enabled", &property_value);
+          		switch (property.type()) {
-          	if (ImGui::Button("Set")) {
+          			case PropertyType::Double: {
-           		BooleanProperty property;
+              			std::optional<double> min;
-             	property.set_value(property_value);
+                 		std::optional<double> max;
-              	google::protobuf::Any value;
+                   		double value = 0.0;
-               	value.PackFrom(property);
+                     	if (double_properties.contains(property.path())) {
-           		playback->set_property(property_name, value);
+                      		value = double_properties[property.path()];
-           	}
+                      	} else {
+                       		auto value_to_resolve = playback->get_property(property.path());
+							if (value_to_resolve.has_value()) {
+								value = resolve_value<double>(value_to_resolve.value());
+							}
+                         	double_properties[property.path()] = value;
+                       	}
+              			if (property.has_hint() && property.hint().has_range()) {
+                 			auto range = property.hint().range();
+                    		if (range.has_min() && range.has_max()) {
+                      			float flt = (float)value;
+                      			if (ImGui::SliderFloat(property.path().c_str(), &flt, (float)range.min(), (float)range.max())) {
+                         			double_properties[property.path()] = flt;
+                         		}
+                           		valid = true;
+                      		} else {
+                        		if (range.has_min()) min = range.min();
+                          		if (range.has_max()) max = range.max();
+                        	}
+                 		}
+	                   	if (!valid) {
+	                   		ImGui::InputDouble(property.path().c_str(), &value);
+	                     	if (min.has_value() && value < min) {
+	                      		value = min.value();
+	                        }
+	                        if (max.has_value() && value > max) {
+	                        	value = max.value();
+	                        }
+	                        double_properties[property.path()] = value;
+	                        valid = true;
+                   		}
+                    } break;
+              		case PropertyType::Boolean: {
+	                   	bool value = false;
+	                   	if (boolean_properties.contains(property.path())) {
+	                  		value = boolean_properties[property.path()];
+	                   	} else {
+							auto value_to_resolve = playback->get_property(property.path());
+							if (value_to_resolve.has_value()) {
+								value = resolve_value<bool>(value_to_resolve.value());
+							}
+							boolean_properties[property.path()] = value;
+	                   	}
+	                    if (ImGui::Checkbox(property.path().c_str(), &value)) {
+	                       	boolean_properties[property.path()] = value;
+	                    }
+						valid = true;
+                    } break;
+            	}
+             	if (valid) {
+              		ImGui::SameLine();
+                	if (ImGui::Button("Set")) {
+	              		switch (property.type()) {
+		              		case PropertyType::Double: {
+	                  			DoubleProperty property_d;
+	                     		property_d.set_value(double_properties[property.path()]);
+	                      		google::protobuf::Any value;
+	                        	value.PackFrom(property_d);
+	                         	playback->set_property(property.path(), value);
+	                  		} break;
+	                  		case PropertyType::Boolean: {
+	                    		BooleanProperty property_b;
+	                      		property_b.set_value(boolean_properties[property.path()]);
+	                      		google::protobuf::Any value;
+	                           	value.PackFrom(property_b);
+	                           	playback->set_property(property.path(), value);
+	                  		} break;
+	                	}
+                 	}
+              	}
+               	ImGui::PopID();
+          	}
        	}
         ImGui::End();
     }

backends/ui/imgui/main.h

@@ -12,7 +12,7 @@
 #include <cmath>
 #include <cstdlib>
 #include <string>
-
+#include <map>
 #include <SDL.h>
 #include <SDL_image.h>
 #include <filesystem>
@@ -53,6 +53,9 @@ class MainLoop : public RendererBackend {
     UIBackend *cur_backend;
     friend class ImGuiUIBackend;
     std::atomic_bool exit_flag;
+    std::map<std::string, bool> boolean_properties;
+    std::map<std::string, double> double_properties;
+    std::vector<Property> properties;
     std::vector<PlaybackStream> streams;
     public:
     Playback *playback;

ipc/common.proto

@@ -27,6 +27,36 @@ message BooleanProperty {
 message BytesProperty {
 	bytes value = 1;
 };
+message PropertyHintRange {
+	optional double min = 1;
+	optional double max = 2;
+};
+message PropertyHintEnum {
+	repeated string data = 1;
+};
+message PropertyHint {
+	oneof hint {
+		PropertyHintRange range = 1;
+		fixed64 max_length = 2;
+		PropertyHintEnum enum = 3;
+	};
+};
+enum PropertyType {
+	Double = 0;
+	Boolean = 1;
+	String = 2;
+	Bytes = 3;
+	Stream = 4;
+	AudioSpec = 5;
+	StreamID = 6;
+}
+message Property {
+	PropertyType type = 1;
+	optional PropertyId id = 5;
+	optional string path = 2;
+	optional string name = 4;
+	optional PropertyHint hint = 3;
+};
 message StreamId {
     uint64 id = 504;
 };
@@ -38,9 +68,6 @@ message Stream {
 message StreamList {
     repeated Stream streams = 500;
 }
-message Position {
-    double pos = 508;
-};
 enum EndianID {
     LITTLE = 0;
     BIG = 1;

ipc/internal.proto

@@ -31,6 +31,9 @@ message SimpleAckResponse {
 message InitCommand {
     string filename = 1;
     uint64 idx = 2;
+};
+message GetPropertyListCommand {
+
 };
 message RPCCall {
 	uint64 cmdid = 1;
@@ -41,8 +44,12 @@ message RPCCall {
 		ResetProperty reset = 5;
 		QuitCmd quit = 6;
 		InitCommand init = 7;
+		GetPropertyListCommand get_property_list = 8;
 	};
 };
+message PropertyList {
+	repeated Property list = 1;
+}
 message RPCResponse {
 	uint64 cmdid = 1;
 	oneof response {
@@ -51,5 +58,6 @@ message RPCResponse {
 	PropertyData data = 4;
 	ResetResponse reset = 5;
 	ErrorResponse err = 6;
+	PropertyList property_list = 7;
 	};
 };

playback.cpp

@@ -684,3 +684,7 @@ std::optional<google::protobuf::Any> PlaybackInstance::get_property(std::string
 std::optional<google::protobuf::Any> PlaybackInstance::reset_property(std::string path) {
 	return {};
 }
+std::vector<Property> PlaybackInstance::get_property_list() {
+	if (process == nullptr) return {};
+	return process->get_property_list();
+}

playback.h

@@ -24,6 +24,7 @@ extern "C" {
 #include "config.hpp"
 #include "playback_process.hpp"
 #include <google/protobuf/any.h>
+#include <ipc/internal.pb.h>
 using namespace soundtouch;
 using std::span;
 using std::optional;
@@ -220,6 +221,9 @@ class Playback {
             LoopFunction();
         }
     }
+    virtual std::vector<Property> get_property_list() {
+    	return {};
+    }
 
     static Playback *Create(bool *daemon_found, bool daemon = false);
 };
@@ -333,6 +337,7 @@ public:
     void set_property(std::string path, google::protobuf::Any) override;
     std::optional<google::protobuf::Any> get_property(std::string path) override;
     std::optional<google::protobuf::Any> reset_property(std::string path) override;
+    std::vector<Property> get_property_list() override;
     float volume;
     float speed;
     float tempo;

playback_backend.hpp

@@ -15,16 +15,6 @@ struct PlaybackStream {
     int id;
 };
 class PlaybackBackendHelper;
-enum PropertyType {
-	Double,
-	String,
-	Bytes,
-	Boolean
-};
-struct Property {
-	PropertyType type;
-	std::string path;
-};
 class PlaybackBackend {
 	double prevRate;
 	size_t minSamples;
@@ -87,6 +77,9 @@ class PlaybackBackend {
     inline double get_rate() {
     	return this->rate;
     }
+    inline virtual std::vector<Property> get_property_list() {
+    	return std::vector<Property>();
+    }
     inline virtual bool set(std::string path, google::protobuf::Any value) {properties[path] = value; return true;}
     inline virtual std::optional<google::protobuf::Any> get(std::string path) {return properties.contains(path) ? properties[path] : std::optional<google::protobuf::Any>();}
     inline virtual std::optional<google::protobuf::Any> reset(std::string path) {

playback_process.cpp

@@ -296,6 +296,17 @@ MaybeError PlaybackProcessServiceImpl::Quit(const QuitCmd *request) {
     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;
@@ -485,6 +496,9 @@ RPCResponse PlaybackProcess::handle_command(RPCCall &call) {
         } 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;
@@ -701,3 +715,18 @@ double PlaybackProcess::get_cached_rate() {
 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>();
+	}
+}

playback_process.hpp

@@ -30,6 +30,7 @@ class PlaybackProcessServiceImpl {
 	ResetResponse Reset(const ResetProperty *request);
 	MaybeError Quit(const QuitCmd *request);
 	MaybeError Init(const InitCommand *cmd);
+	PropertyList GetPropertyList(const GetPropertyListCommand *cmd);
 };
 //#define DEBUG_PRINT_IPC
 void print_ipc_message(const google::protobuf::Message &msg, size_t level = 0);
@@ -118,6 +119,7 @@ class PlaybackProcess  {
 
     std::optional<google::protobuf::Any> get_property(std::string path);
     bool set_property(std::string path, google::protobuf::Any value);
+    std::vector<Property> get_property_list();
     PlaybackProcess(std::string filename, int idx = 0);
     ~PlaybackProcess();
 };

util.cpp

@@ -180,3 +180,26 @@ int NotSDL_ConvertAudioSamples(const SDL_AudioSpec *src_spec, const Uint8 *src_d
     SDL_FreeAudioStream(stream);
     return retval;
 }
+PropertyHint make_hint(double min, double max) {
+	PropertyHint output;
+	auto range = output.mutable_range();
+	range->set_min(min);
+	range->set_max(max);
+	return output;
+}
+Property make_property(PropertyType type, std::string name, PropertyId id, std::optional<std::string> path, std::optional<PropertyHint> hint) {
+	Property output;
+	output.set_id(id);
+	output.set_name(name);
+	output.set_type(type);
+	if (path.has_value()) output.set_path(path.value());
+	if (hint.has_value()) output.mutable_hint()->CopyFrom(hint.value());
+	return output;
+}
+Property make_property(PropertyType type, std::string name, std::string path, std::optional<PropertyHint> hint) {
+	return make_property(type, name, PropertyId::BackendSpecific, path, hint)
+}
+Property make_property(PropertyType type, std::string name, PropertyId id, std::optional<PropertyHint> hint) {
+	return make_property(type, name, id, {}, hint)
+
+}

util.hpp

@@ -334,6 +334,9 @@ class DynPtr {
     DynPtr(size_t len) : DynPtr() {
         resize(len);
     }
+    DynPtr(std::string input) : DynPtr(input.length()) {
+    	memcpy(this->ptr, input.data(), input.length());
+    }
     /// @brief Gets the pointer, but does not reallocate it.
     /// @param T The type of pointer to return. May be void to return void*.
     /// @returns The pointer, owned by the DynPtr object.
@@ -493,28 +496,65 @@ inline T *resolve_any(google::protobuf::Any value) {
     value.UnpackTo(output);
     return output;
 }
-inline bool resolve_bool(google::protobuf::Any value) {
+template<class T>
+inline T resolve_value(google::protobuf::Any value) {
+	throw std::exception();
+}
+template<>
+inline bool resolve_value<bool>(google::protobuf::Any value) {
 	BooleanProperty *property = resolve_any<BooleanProperty>(value);
 	bool output = property->value();
 	delete property;
 	return output;
 }
-inline std::string resolve_string(google::protobuf::Any value) {
+template<>
+inline std::string resolve_value<std::string>(google::protobuf::Any value) {
 	StringProperty *property = resolve_any<StringProperty>(value);
 	std::string output = property->value();
 	delete property;
 	return output;
 }
-inline std::string resolve_bytes(google::protobuf::Any value) {
+template<>
+inline DynPtr resolve_value<DynPtr>(google::protobuf::Any value) {
 	BytesProperty *property = resolve_any<BytesProperty>(value);
 	std::string output = property->value();
 	delete property;
-	return output;
+	return DynPtr(output);
 }
 
-inline double resolve_double(google::protobuf::Any value) {
+template<>
+inline double resolve_value(google::protobuf::Any value) {
 	DoubleProperty *property = resolve_any<DoubleProperty>(value);
 	double output = property->value();
 	delete property;
 	return output;
 }
+template<class T>
+inline google::protobuf::Any value_to_any(T value) {
+	google::protobuf::Any output;
+	output.PackFrom(value);
+	return output;
+}
+template<>
+inline google::protobuf::Any value_to_any<double>(double value) {
+	DoubleProperty output;
+	output.set_value(value);
+	return value_to_any<DoubleProperty>(output);
+}
+
+template<>
+inline google::protobuf::Any value_to_any<bool>(bool value) {
+	BooleanProperty output;
+	output.set_value(value);
+	return value_to_any<BooleanProperty>(output);
+}
+
+template<>
+inline google::protobuf::Any value_to_any<std::string>(std::string value) {
+	StringProperty output;
+	output.set_value(value);
+	return value_to_any<StringProperty>(output);
+}
+Property make_property(PropertyType type, std::string name, PropertyId id, std::optional<PropertyHint> hint);
+Property make_property(PropertyType type, std::string name, std::string path, std::optional<PropertyHint> hint = {});
+Property make_property(PropertyType type, std::string name, PropertyId id = PropertyId::BackendSpecific, std::optional<std::string> path = {}, std::optional<PropertyHint> hint = {});