From 8b00d67febf133e89f6a0bfabc41feed555dc4a9 Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 12 Jan 2019 21:48:33 +0800
Subject: =?UTF-8?q?*=E5=8E=BB=E6=8E=89=E6=96=87=E4=BB=B6=E5=89=8D=E7=BC=80?=
 =?UTF-8?q?je=5F?=
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---
 src/libjin/audio/SDL/sdl_audio.h | 136 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 136 insertions(+)
 create mode 100644 src/libjin/audio/SDL/sdl_audio.h

(limited to 'src/libjin/audio/SDL/sdl_audio.h')

diff --git a/src/libjin/audio/SDL/sdl_audio.h b/src/libjin/audio/SDL/sdl_audio.h
new file mode 100644
index 0000000..4808118
--- /dev/null
+++ b/src/libjin/audio/SDL/sdl_audio.h
@@ -0,0 +1,136 @@
+#ifndef __JE_AUDIO_SDL_H__
+#define __JE_AUDIO_SDL_H__
+#include "../../core/configuration.h"
+#if defined(jin_audio) && (jin_audio == jin_audio_sdl)
+
+#include <vector>
+
+#include "../audio_manager.h"
+
+#include "sdl_source.h"
+
+namespace JinEngine
+{
+    namespace Audio
+    {
+        namespace SDL
+        {
+
+#define SDLAUDIO_BITDEPTH 16
+#define SDLAUDIO_BYTEDEPTH (SDLAUDIO_BITDEPTH  >> 3)
+#define SDLAUDIO_CHANNELS  2
+
+            ///
+            /// Audio system SDL implementation.
+            ///
+            class SDLAudio : public AudioManager<SDLAudio>
+            {
+            public:
+                ///
+                /// SDL audio setting.
+                ///
+                struct Setting : SettingBase
+                {
+                public:
+                    int samplerate; // 采样频率
+                    int samples;    // 缓冲区的sample数，<=samplerate
+                };
+
+                ///
+                /// SDL audio constructor.
+                ///
+                SDLAudio() {};
+
+                ///
+                /// SDL audio destructor.
+                ///
+                ~SDLAudio() {};
+
+                ///
+                /// Play all sources whose state is playing.
+                ///
+                void play() override;
+
+                ///
+                /// Stop and remove all sources from the queue. 
+                ///
+                void stop() override;
+
+                ///
+                /// Pause audio.
+                ///
+                void pause() override;
+
+                ///
+                /// Resume audio.
+                ///
+                void resume() override;
+
+                ///
+                /// Set global audio volume.
+                ///
+                void setVolume(float volume) override;
+
+                ///
+                /// Process all commands in the queue.
+                ///
+                void processCommands();
+
+                ///
+                /// Process all sources.
+                /// 
+                /// @param buffer Source buffer.
+                /// @param len Source length.
+                ///
+                void processSources(void* buffer, size_t len);
+
+                ///
+                /// Process audio buffer.
+                /// 
+                /// @param buffer Audio stream buffer.
+                /// @param len Length of stream buffer.
+                ///
+                void processBuffer(void* buffer, size_t len);
+
+                ///
+                /// Goon process.
+                /// 
+                /// @return True if sucessful, otherwise return false.
+                ///
+                bool goOnProcess();
+
+                ///
+                /// Lock audio device.
+                ///
+                void lock();
+
+                ///
+                /// Unlock audio device.
+                ///
+                void unlock();
+
+            private:
+                ///
+                /// Initialize audio system.
+                ///
+                /// @param setting Audio setting.
+                ///
+                bool startSystem(const SettingBase* setting) override;
+
+                ///
+                /// Quit audio system.
+                ///
+                void quitSystem() override;
+
+                // Audio device id.
+                unsigned int audioDevice;
+
+            };
+
+        } // namespace SDL 
+    } // namespace Audio
+} // namespace JinEngine
+
+#endif // (jin_audio) && (jin_audio == jin_audio_sdl)
+
+#endif // __JE_AUDIO_SDL_H__
\ No newline at end of file
-- 
cgit v1.1-26-g67d0