From 7e065ac8d778770e4dba903f93076a254e8f81e6 Mon Sep 17 00:00:00 2001
From: Demur Rumed <junkmute@hotmail.com>
Date: Sat, 19 Apr 2025 16:15:30 +0000
Subject: [PATCH] dlopen

---
 soh/CMakeLists.txt                            |  1 -
 .../ESpeakSpeechSynthesizer.cpp               | 45 ++++++++++++++-----
 .../ESpeakSpeechSynthesizer.h                 | 19 +++++++-
 3 files changed, 52 insertions(+), 13 deletions(-)

diff --git a/soh/CMakeLists.txt b/soh/CMakeLists.txt
index b3faf9fa2..07109a918 100644
--- a/soh/CMakeLists.txt
+++ b/soh/CMakeLists.txt
@@ -324,7 +324,6 @@ endif()
 
 if (ESPEAK)
     add_compile_definitions(ESPEAK=1)
-    target_link_libraries(${PROJECT_NAME} PUBLIC espeak-ng)
 endif()
 
 target_include_directories(${PROJECT_NAME} PRIVATE assets
diff --git a/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.cpp b/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.cpp
index b7dc3d932..f92959ff1 100644
--- a/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.cpp
+++ b/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.cpp
@@ -1,26 +1,49 @@
 #include "ESpeakSpeechSynthesizer.h"
-extern "C" {
-#include <espeak-ng/speak_lib.h>
-}
+#include <dlfcn.h>
+#include <libultraship/libultraship.h>
 
 ESpeakSpeechSynthesizer::ESpeakSpeechSynthesizer() {
 }
 
 bool ESpeakSpeechSynthesizer::DoInit() {
-    return espeak_Initialize(AUDIO_OUTPUT_PLAYBACK, 100, NULL, 0) != -1;
+    void* espeak = dlopen("libespeak-ng.so", RTLD_LAZY | RTLD_LOCAL);
+    if (espeak != NULL) {
+        this->Initialize = (speak_Initialize)dlsym(espeak, "espeak_Initialize");
+        this->SetVoiceByProperties = (speak_SetVoiceByProperties)dlsym(espeak, "espeak_SetVoiceByProperties");
+        this->Synth = (speak_Synth)dlsym(espeak, "espeak_Synth");
+        this->Terminate = (speak_Terminate)dlsym(espeak, "espeak_Terminate");
+        if (this->Initialize == NULL || this->SetVoiceByProperties == NULL || this->Synth == NULL ||
+            this->Terminate == NULL) {
+            lusprintf(__FILE__, __LINE__, 2, "Failed to load espeak-ng");
+            dlclose(espeak);
+            return false;
+        } else {
+            this->espeak = espeak;
+            return this->Initialize(AUDIO_OUTPUT_PLAYBACK, 100, NULL, 0) != -1;
+        }
+    }
+    return true;
 }
 
 void ESpeakSpeechSynthesizer::DoUninitialize() {
-    espeak_Terminate();
+    if (this->espeak != NULL) {
+        this->Terminate();
+        dlclose(this->espeak);
+        this->espeak = NULL;
+    }
 }
 
 void ESpeakSpeechSynthesizer::Speak(const char* text, const char* language) {
-    if (language != this->mLanguage) {
-        espeak_VOICE voice = { .languages = language };
-        if (espeak_SetVoiceByProperties(&voice)) {
-            return;
+    if (this->espeak == NULL) {
+        lusprintf(__FILE__, __LINE__, 2, "Spoken Text (%s): %s", language, text);
+    } else {
+        if (language != this->mLanguage) {
+            espeak_VOICE voice = { .languages = language };
+            if (this->SetVoiceByProperties(&voice)) {
+                return;
+            }
+            this->mLanguage = language;
         }
-        this->mLanguage = language;
+        this->Synth(text, 100, 0, POS_CHARACTER, 0, espeakCHARS_UTF8, NULL, NULL);
     }
-    espeak_Synth(text, 100, 0, POS_CHARACTER, 0, espeakCHARS_UTF8, NULL, NULL);
 }
diff --git a/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.h b/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.h
index a7f454946..0844b9293 100644
--- a/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.h
+++ b/soh/soh/Enhancements/speechsynthesizer/ESpeakSpeechSynthesizer.h
@@ -2,6 +2,18 @@
 
 #include "SpeechSynthesizer.h"
 
+extern "C" {
+#include <espeak-ng/speak_lib.h>
+
+// C23 typeof could help here
+typedef ESPEAK_API int (*speak_Initialize)(espeak_AUDIO_OUTPUT output, int buflength, const char* path, int options);
+typedef ESPEAK_API espeak_ERROR (*speak_Terminate)(void);
+typedef ESPEAK_API espeak_ERROR (*speak_SetVoiceByProperties)(espeak_VOICE* voice_spec);
+typedef ESPEAK_API espeak_ERROR (*speak_Synth)(const void* text, size_t size, unsigned int position,
+                                               espeak_POSITION_TYPE position_type, unsigned int end_position,
+                                               unsigned int flags, unsigned int* unique_identifier, void* user_data);
+}
+
 class ESpeakSpeechSynthesizer : public SpeechSynthesizer {
   public:
     ESpeakSpeechSynthesizer();
@@ -13,5 +25,10 @@ class ESpeakSpeechSynthesizer : public SpeechSynthesizer {
     void DoUninitialize(void);
 
   private:
-    const char* mLanguage;
+    const char* mLanguage = NULL;
+    void* espeak = NULL;
+    speak_Initialize Initialize = NULL;
+    speak_SetVoiceByProperties SetVoiceByProperties = NULL;
+    speak_Synth Synth = NULL;
+    speak_Terminate Terminate = NULL;
 };