From 7d5f055547e70fa93ee9ac944e62f8d657b9dc55 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Fri, 19 Oct 2018 08:36:44 +0800
Subject: =?UTF-8?q?*=E4=BF=AE=E6=94=B9=E6=96=87=E4=BB=B6=E5=90=8D?=
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---
 src/libjin/Audio/SDL/je_sdl_source.h | 107 +++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 src/libjin/Audio/SDL/je_sdl_source.h

(limited to 'src/libjin/Audio/SDL/je_sdl_source.h')

diff --git a/src/libjin/Audio/SDL/je_sdl_source.h b/src/libjin/Audio/SDL/je_sdl_source.h
new file mode 100644
index 0000000..15676d6
--- /dev/null
+++ b/src/libjin/Audio/SDL/je_sdl_source.h
@@ -0,0 +1,107 @@
+#ifndef __LIBJIN_SOURCE_SDL_H
+#define __LIBJIN_SOURCE_SDL_H
+#include "../../core/je_configuration.h"
+#if LIBJIN_MODULES_AUDIO && LIBJIN_AUDIO_SDLAUDIO
+
+#include <vector>
+#include <queue>
+#include <stack>
+#include <exception>
+
+#include "../je_source.h"
+
+namespace jin
+{
+	namespace audio
+	{
+
+		typedef struct SDLSourceCommand;
+		class SDLSourceManager;
+
+		class SDLSource : public Source
+		{
+		public: 
+			static SDLSource* createSource(const char* file);
+			static SDLSource* createSource(void* mem, size_t size);
+
+			~SDLSource();
+			/* ISource interface */
+			void play() override;
+			void stop() override;
+			void pause() override;
+			void resume() override;
+			void rewind() override;
+			bool isStopped() const override;
+			bool isPaused() const override;
+			void setPitch(float pitch) override;
+			void setVolume(float volume) override;
+			bool setLoop(bool loop) override;
+			void setRate(float rate) override;
+			/* handle and process anduio clip */
+			inline void handle(SDLSourceManager* manager, SDLSourceCommand* cmd);
+			inline void process(void* buffer, size_t size);
+
+		protected:
+			SDLSource();
+			/* decode raw audio data */
+			void decode_wav(void* mem, int size);
+			void decode_ogg(void* mem, int size);
+			/* check state */
+			inline bool is(int state) const { return (status.state & state) == state; }
+
+			struct{
+				const void* data;       // 音频数据
+				int length;             // data字节长度
+				const void* end;        // data结尾 = (unsigned char*)data + size
+				int samplerate;         // 采样频率
+				unsigned char bitdepth; // 每个sample的比特长度
+				int samples;            // sample数 = size / (bitdepth / 8)
+				unsigned char channels; // channel数1(mono)或2(stereo)
+			} raw;
+			/* Procedure controller variable */
+			struct{
+				int pos;                // 当前播放的sample
+				int pitch;              // pitch
+				int state;              // 当前状态
+				bool loop;              // loop or not
+				float volume;           // 音量
+			} status;
+
+		};
+
+		class SDLSourceManager
+		{
+		public:
+			static SDLSourceManager* get();
+
+			/* Process function */
+			void processCommands();
+			void processSources(void* buffer, size_t size);
+			/* control flow */        
+			void removeAllSource();
+			void removeSource(SDLSource* source);
+			void pushSource(SDLSource* source);
+			SDLSourceCommand* getCommand();
+			void pushCommand(SDLSourceCommand* cmd);
+        
+		private : 
+			std::queue<SDLSourceCommand*> commands;
+			std::stack<SDLSourceCommand*> commandsPool;
+			std::vector<SDLSource*> sources;            // processing sources
+			static SDLSourceManager* manager;
+
+		};
+
+		class SourceException : public std::exception
+		{
+			const char * what() const throw ()
+			{
+				return "Load Source Exception";
+			}
+		};
+
+	} // namespace audio
+} // namespace jin
+
+#endif // LIBJIN_MODULES_AUDIO && LIBJIN_AUDIO_SDLAUDIO
+#endif // __LIBJIN_SOURCE_SDL_H
-- 
cgit v1.1-26-g67d0