change shaderSercve so it can take both of char* and std::filesystem::path

src/decoder.cc

@@ -1,12 +1,9 @@
 #include "decoder.h"
-#include <filesystem>
 
 void InitDecoder(const char* filepath, DecoderParam& param){
-    if(!std::filesystem::exists(filepath)) return;
     AVFormatContext* fmtCtx = nullptr;
     AVCodecContext* codecFmt = nullptr;
     auto ret = avformat_open_input(&fmtCtx, filepath, NULL, NULL);
-    
     avformat_find_stream_info(fmtCtx, nullptr);
 
     for(int i=0; i<fmtCtx->nb_streams; i++){

src/shaderService.cc

@@ -5,6 +5,30 @@
 #include "shaderService.h"
 #include <fstream>
 #include <iostream>
+ShaderService::ShaderService(const char* vSource, const char* fSource){
+    InitShader(vSource, fSource);
+}
+
+void ShaderService::InitShader(const char* vSource, const char* fSource){
+    unsigned int frag, vertex;
+    frag = glCreateShader(GL_FRAGMENT_SHADER);
+    vertex = glCreateShader(GL_VERTEX_SHADER);
+    glShaderSource(vertex, 1, &vSource, nullptr);
+    glShaderSource(frag, 1, &fSource, nullptr);
+    glCompileShader(vertex);
+    glCompileShader(frag);
+    if(const auto res = (CheckShader(vertex) && CheckShader(frag));!res){
+        return;
+    }
+    programId = glCreateProgram();
+    glAttachShader(programId, vertex);
+    glAttachShader(programId, frag);
+    glLinkProgram(programId);
+    CheckShader(programId, true);
+
+    glDeleteShader(vertex);
+    glDeleteShader(frag);
+}
 
 ShaderService::ShaderService(const std::filesystem::path &vertexShaderPath,
                              const std::filesystem::path &fragShaderPath) {
@@ -27,25 +51,7 @@ ShaderService::ShaderService(const std::filesystem::path &vertexShaderPath,
 
     const char* vSource = vertexSource.c_str();
     const char* fSource = fragmentSource.c_str();
-
-    unsigned int frag, vertex;
-    frag = glCreateShader(GL_FRAGMENT_SHADER);
-    vertex = glCreateShader(GL_VERTEX_SHADER);
-    glShaderSource(vertex, 1, &vSource, nullptr);
-    glShaderSource(frag, 1, &fSource, nullptr);
-    glCompileShader(vertex);
-    glCompileShader(frag);
-    if(const auto res = (CheckShader(vertex) && CheckShader(frag));!res){
-        return;
-    }
-    programId = glCreateProgram();
-    glAttachShader(programId, vertex);
-    glAttachShader(programId, frag);
-    glLinkProgram(programId);
-    CheckShader(programId, true);
-
-    glDeleteShader(vertex);
-    glDeleteShader(frag);
+    InitShader(vSource, fSource);
 }
 
 void ShaderService::Use() {