Fix FM synthesis issues, potentially making the audio rendering of ZSM files less optimized.

backends/playback/zsm/zsm_backend.cpp

@@ -6,14 +6,28 @@ extern "C" {
 #include "x16emu/vera_psg.h"
 #include "x16emu/ymglue.h"
 }
+#include <ipc/common.pb.h>
 #include <exception>
 #include <filesystem>
 #include "file_backend.hpp"
 #include <stddef.h>
 #include <string.h>
 #include <file_backend.hpp>
+#include <util.hpp>
 #define HZ (AUDIO_SAMPLERATE)
 #define BUFFERS 32
+#define _PROPERTY(name, type, default_value) \
+bool ZsmBackend::name() { \
+	std::optional<google::protobuf::Any> value_maybe = get(#name); \
+	if (value_maybe.has_value()) { \
+		return resolve_##type(value_maybe.value()); \
+	} \
+	return default_value; \
+}
+#define BOOL_PROPERTY(name, default_value) _PROPERTY(name, bool, default_value)
+BOOL_PROPERTY(pcm_enable, true)
+BOOL_PROPERTY(psg_enable, true)
+BOOL_PROPERTY(fm_enable, true)
 void ZsmBackend::load(const char *filename) {
 	memset(&spec, 0, sizeof(spec));
     spec.format = AUDIO_S16SYS;
@@ -167,7 +181,7 @@ void ZsmBackend::tick(bool step) {
                 for (uint8_t i = 0; i < cmd.fm_write.len; i++) {
                     YM_write_reg(cmd.fm_write.regs[i].reg, cmd.fm_write.regs[i].val);
                     while (YM_read_status()) {
-                        size_t clocksToAddForYm = 64;
+                        size_t clocksToAddForYm = 1;
                         ticks_remaining -= clocksToAddForYm;
                         if (ticks_remaining < 0) {
                             delayTicks -= 1;

backends/playback/zsm/zsm_backend.hpp

@@ -93,6 +93,9 @@ class ZsmBackend : public PlaybackBackend {
     SDL_AudioStream *fm_stream;
     std::vector<pcm_instrument*> instruments;
     uint8_t *audio_sample = nullptr;
+    bool pcm_enable();
+    bool psg_enable();
+    bool fm_enable();
     int16_t combine_audio(int16_t a, int16_t b) {
         return (int16_t)((((int32_t)a) + ((int32_t)b)) >> 1);
     }
@@ -136,8 +139,11 @@ class ZsmBackend : public PlaybackBackend {
             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];

backends/ui/imgui/main.cpp

@@ -196,6 +196,9 @@ void MainLoop::GuiFunction() {
                 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;
+            }
         }
         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)) {
@@ -297,6 +300,24 @@ void MainLoop::GuiFunction() {
         ImGui::PopItemWidth();
     }
     ImGui::End();
+    if (property_editor) {
+    	ImGui::SetNextWindowDockID(dockid);
+     	ImGui::Begin("Property Editor", &property_editor);
+      	{
+       		static std::string property_name;
+       		static bool property_value;
+       		ImGui::InputText("Property Name", &property_name);
+         	ImGui::Checkbox("Enabled", &property_value);
+          	if (ImGui::Button("Set")) {
+           		BooleanProperty property;
+             	property.set_value(property_value);
+              	google::protobuf::Any value;
+               	value.PackFrom(property);
+           		playback->set_property(property_name, value);
+           	}
+       	}
+        ImGui::End();
+    }
     if (prefs_window) {
         ImGui::SetNextWindowDockID(dockid);
         ImGui::Begin(_TRI_CTX(ICON_FK_COG, "Window title, window opened by menu item", "Preferences..."), &prefs_window);

backends/ui/imgui/main.h

@@ -46,6 +46,7 @@ class MainLoop : public RendererBackend {
     bool theme_editor = false;
     bool about_window = false;
     bool debug_mode = false;
+    bool property_editor = false;
     bool restart_needed = false;
     bool stopped = true;
     std::vector<UIBackend*> backends;

ipc/common.proto

@@ -21,6 +21,12 @@ message StringProperty {
 message DoubleProperty {
 	double value = 1;
 };
+message BooleanProperty {
+	bool value = 1;
+};
+message BytesProperty {
+	bytes value = 1;
+};
 message StreamId {
     uint64 id = 504;
 };

playback.cpp

@@ -669,3 +669,18 @@ std::vector<PlaybackStream> PlaybackInstance::get_streams() {
 int PlaybackInstance::get_current_stream() {
     return current_stream;
 }
+
+void PlaybackInstance::set_property(std::string path, google::protobuf::Any value) {
+	if (this->process != nullptr) {
+		this->process->set_property(path, value);
+	}
+}
+std::optional<google::protobuf::Any> PlaybackInstance::get_property(std::string path) {
+	if (this->process != nullptr) {
+		return this->process->get_property(path);
+	}
+	return {};
+}
+std::optional<google::protobuf::Any> PlaybackInstance::reset_property(std::string path) {
+	return {};
+}

playback.h

@@ -23,6 +23,7 @@ extern "C" {
 #include "playback_backend.hpp"
 #include "config.hpp"
 #include "playback_process.hpp"
+#include <google/protobuf/any.h>
 using namespace soundtouch;
 using std::span;
 using std::optional;
@@ -195,6 +196,15 @@ class Playback {
     }
     virtual void DeinitLoopFunction() {
 
+    }
+    virtual void set_property(std::string path, google::protobuf::Any value) {
+
+    }
+    virtual std::optional<google::protobuf::Any> get_property(std::string path) {
+    	return {};
+    }
+    virtual std::optional<google::protobuf::Any> reset_property(std::string path) {
+    	return {};
     }
     bool loop_started = false;
     virtual void start_loop() {
@@ -320,6 +330,9 @@ public:
     void InitLoopFunction() override;
     void DeinitLoopFunction() override;
     void LoopFunction() override;
+    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;
     float volume;
     float speed;
     float tempo;

playback_backend.hpp

@@ -15,6 +15,16 @@ 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;

playback_process.cpp

@@ -618,6 +618,31 @@ std::vector<PlaybackStream> PlaybackProcess::get_playback_streams() {
     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);

playback_process.hpp

@@ -31,12 +31,6 @@ class PlaybackProcessServiceImpl {
 	MaybeError Quit(const QuitCmd *request);
 	MaybeError Init(const InitCommand *cmd);
 };
-template<class T>
-inline T *resolve_any(google::protobuf::Any value) {
-    T *output = new T();
-    value.UnpackTo(output);
-    return output;
-}
 //#define DEBUG_PRINT_IPC
 void print_ipc_message(const google::protobuf::Message &msg, size_t level = 0);
 class PlaybackProcess  {

util.hpp

@@ -17,6 +17,7 @@
 #include <cassert>
 #include <SDL.h>
 #include "log.hpp"
+#include <ipc/common.pb.h>
 namespace fs = std::filesystem;
 std::string PadZeros(std::string input, size_t required_length);
 uint8_t TimeToComponentCount(double time_code);
@@ -485,3 +486,35 @@ void blocking_write(int fd, const void *buf, const size_t len);
 void blocking_read(int fd, void *buf, const size_t len);
 int NotSDL_ConvertAudioSamples(const SDL_AudioSpec *src_spec, const Uint8 *src_data, int src_len,
                             const SDL_AudioSpec *dst_spec, Uint8 **dst_data, int *dst_len);
+
+template<class T>
+inline T *resolve_any(google::protobuf::Any value) {
+    T *output = new T();
+    value.UnpackTo(output);
+    return output;
+}
+inline bool resolve_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) {
+	StringProperty *property = resolve_any<StringProperty>(value);
+	std::string output = property->value();
+	delete property;
+	return output;
+}
+inline std::string resolve_bytes(google::protobuf::Any value) {
+	BytesProperty *property = resolve_any<BytesProperty>(value);
+	std::string output = property->value();
+	delete property;
+	return output;
+}
+
+inline double resolve_double(google::protobuf::Any value) {
+	DoubleProperty *property = resolve_any<DoubleProperty>(value);
+	double output = property->value();
+	delete property;
+	return output;
+}