From 12a3499ca365756a77958d616423aca39a23234b Mon Sep 17 00:00:00 2001
From: Fire-Head <Fire-Head@users.noreply.github.com>
Date: Thu, 7 May 2020 09:26:16 +0300
Subject: oal wav/mp3 stream update

---
 src/audio/oal/stream.h | 89 ++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 72 insertions(+), 17 deletions(-)

(limited to 'src/audio/oal/stream.h')

diff --git a/src/audio/oal/stream.h b/src/audio/oal/stream.h
index 666d42e0..f1e5f458 100644
--- a/src/audio/oal/stream.h
+++ b/src/audio/oal/stream.h
@@ -4,8 +4,56 @@
 #ifdef AUDIO_OAL
 #include <AL/al.h>
 
-#define NUM_STREAMBUFFERS 5
-#define STREAMBUFFER_SIZE 0x4000
+#define NUM_STREAMBUFFERS 4
+
+class IDecoder
+{
+public:
+	virtual ~IDecoder() { }
+	
+	virtual bool   IsOpened() = 0;
+	
+	virtual uint32 GetSampleSize() = 0;
+	virtual uint32 GetSampleCount() = 0;
+	virtual uint32 GetSampleRate() = 0;
+	virtual uint32 GetChannels() = 0;
+	
+	uint32 GetAvgSamplesPerSec()
+	{
+		return GetChannels() * GetSampleRate();
+	}
+	
+	uint32 ms2samples(uint32 ms)
+	{
+		return float(ms) / 1000.0f * float(GetChannels()) * float(GetSampleRate());
+	}
+	
+	uint32 samples2ms(uint32 sm)
+	{
+		return float(sm) * 1000.0f / float(GetChannels()) / float(GetSampleRate());
+	}
+	
+	uint32 GetBufferSamples()
+	{
+		//return (GetAvgSamplesPerSec() >> 2) - (GetSampleCount() % GetChannels());
+		return (GetAvgSamplesPerSec() / 4); // 250ms
+	}
+	
+	uint32 GetBufferSize()
+	{
+		return GetBufferSamples() * GetSampleSize();
+	}
+	
+	virtual void   Seek(uint32 milliseconds) = 0;
+	virtual uint32 Tell() = 0;
+	
+	uint32 GetLength()
+	{
+		return float(GetSampleCount()) * 1000.0f / float(GetSampleRate());
+	}
+	
+	virtual uint32 Decode(void *buffer) = 0;
+};
 
 class CStream
 {
@@ -13,30 +61,34 @@ class CStream
 	ALuint  &m_alSource;
 	ALuint (&m_alBuffers)[NUM_STREAMBUFFERS];
 	
-	bool     m_bIsOpened;
 	bool     m_bPaused;
-		
-	uint32   m_nLength;
-	uint32   m_nLengthMS;
-	uint32   m_nBitRate;
-	
-	unsigned long   m_nFormat;
-	unsigned long   m_nFreq;
+	bool     m_bActive;
 	
-	uint32   m_nBufferSize;
 	void    *m_pBuffer;
 	
-	ALint iTotalBuffersProcessed;
+	bool     m_bReset;
+	uint32   m_nVolume;
+	uint8    m_nPan;
+	uint32   m_nPosBeforeReset;
+	
+	IDecoder *m_pSoundFile;
+	
+	bool HasSource();
+	void SetPosition(float x, float y, float z);
+	void SetPitch(float pitch);
+	void SetGain(float gain);
+	void   Pause();
+	void   SetPlay(bool state);
 	
 	bool   FillBuffer(ALuint alBuffer);
 	int32  FillBuffers();
+	void   ClearBuffers();
 public:
 	static void Initialise();
 	static void Terminate();
 	
 	CStream(char *filename, ALuint &source, ALuint (&buffers)[NUM_STREAMBUFFERS]);
 	~CStream();
-	
 	void   Delete();
 	
 	bool   IsOpened();
@@ -44,14 +96,17 @@ public:
 	void   SetPause (bool bPause);
 	void   SetVolume(uint32 nVol);
 	void   SetPan   (uint8 nPan);
-	void   SetPos   (uint32 nPos); 
-
-	uint32 GetPos();
-	uint32 GetLength();
+	void   SetPosMS (uint32 nPos); 
+	uint32 GetPosMS();
+	uint32 GetLengthMS();
 	
 	bool Setup();
 	void Start();
+	void Stop();
 	void Update(void);
+	
+	void ProviderInit();
+	void ProviderTerm();
 };
 
 #endif
\ No newline at end of file
-- 
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