From 4f3ea475b0c72cf83175cc69bdd128b7a306523b Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sun, 27 May 2018 17:39:09 +0800
Subject: =?UTF-8?q?=E6=9B=B4=E6=96=B0=E9=9F=B3=E9=A2=91=E6=A8=A1=E5=9D=97?=
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---
 src/libjin/audio/sdl/source.h | 118 ++++++++++++++++++++++++------------------
 1 file changed, 69 insertions(+), 49 deletions(-)

(limited to 'src/libjin/audio/sdl/source.h')

diff --git a/src/libjin/audio/sdl/source.h b/src/libjin/audio/sdl/source.h
index 682ff50..d97590e 100644
--- a/src/libjin/audio/sdl/source.h
+++ b/src/libjin/audio/sdl/source.h
@@ -4,11 +4,7 @@
 #include <vector>
 #include <queue>
 #include <stack>
-
-#include "3rdparty/wav/wav.h"
-#define STB_VORBIS_HEADER_ONLY
-#include "3rdparty/stb/stb_vorbis.c"
-#undef STB_VORBIS_HEADER_ONLY
+#include <exception>
 
 #include "../source.h"
 
@@ -17,15 +13,21 @@ namespace jin
 namespace audio
 {
 
+    struct SDLSourceCommand;
+
     class SDLSource : public Source
     {
 
     public: 
 
-        SDLSource() {} 
-        ~SDLSource() {}
+        enum Type
+        {
+            WAV = 1, 
+            OGG = 2,
+        };
 
-        void generateSamples(Uint8* streamIn, int len);
+        SDLSource(Type format, void* mem, int size) ;
+        ~SDLSource();
 
         /* ISource interface */
         void play() override;
@@ -41,52 +43,70 @@ namespace audio
         bool setLoop(bool loop) override;
         void setRate(float rate) override;
 
-        /* process function */
-        static void processCommand();
-        static void processSource(); 
-        static void removeSource(SDLSource* source);
-
     private:
 
-        struct Command
+        friend class SDLSourceManager;
+
+        void loadWAV(void* mem, int size);
+        void loadOGG(void* mem, int size);
+
+        inline bool is(int state) { return (status & state) == state; }
+
+        struct
         {
-            typedef enum Action
-            {
-                Nothing = 0,
-                Play,
-                Stop,
-                Pause,
-                Resume,
-                Rewind,
-                SetVolume,
-                SetLoop,
-                SetRate,
-            };
-            Action action;
-            union {
-                int _integer;
-                float _float; 
-                bool _boolean;
-                const char* _string;
-            };
-            SDLSource* source;
-        };
+            const void* data;             // 音频数据
+            int length;             // data字节长度
+            void* end;              // data结尾 = (unsigned char*)data + length
+            int rate;               // 采样频率
+            unsigned char bitdepth; // 每个sample的比特长度
+            int samples;            // sample数 = length / (bitdepth / 8)
+            unsigned char channel;  // channel数1或2
+            char silence;           // 0
+        } raw;
+
+        /* Procedure controller variable */
+        int pos;                    // 当前播放的位置
+        int pitch;                  // pitch
+        int status;                 // 当前状态
+        bool loop;                  // loop or not
+
+    };
+
+    class SDLSourceManager
+    {
+    
+    public:
+
+        static SDLSourceManager* get();
 
-        static std::queue<Command*> commands;
-        static std::stack<Command*> commandsPool;
-        static Command* getCommand();
-        static void collectCommand(Command* cmd);
-
-        static std::vector<SDLSource*> sources; 
-        
-        void* data;
-        void* pos; 
-        int length;
-        int pitch; 
-        bool paused; 
-        bool playing;
-        bool stopped; 
+        /* Process function */
+        static void processCommands();
+        static void processSources(Uint8* buffer, int len);
+
+    private:
+
+        friend class SDLSource;
+
+        static void removeSource(SDLSource* source);
+        static void pushSource(SDLSource* source);
+        static SDLSourceCommand* getCommand();
+        static void pushCommand(SDLSourceCommand* cmd);
+        static void collectCommand(SDLSourceCommand* cmd);
 
+        static SDLSourceManager* manager;
+
+        static std::queue<SDLSourceCommand*> commands;
+        static std::stack<SDLSourceCommand*> commandsPool;
+        static std::vector<SDLSource*> sources;            // processing sources
+
+    };
+
+    class SourceException : public std::exception
+    {
+        const char * what() const throw ()
+        {
+            return "Load Source Exception";
+        }
     };
 
 }
-- 
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