Play Wave Files with DirectSound and Display its Spectrum in Real Time - Part 2

#include "stdafx.h"

#ifndef UTILS_H
#define UTILS_H

#define DAUDIO_PCM  0
#define DAUDIO_ULAW 1
#define DAUDIO_ALAW 2

typedef unsigned char   UBYTE;
typedef char            SBYTE;

#define DAUDIO_STRING_LENGTH 200

typedef struct tag_DirectAudioDeviceDescription {
	// optional deviceID (complementary to deviceIndex)
	INT32 deviceID;
	INT32 maxSimulLines;
	TCHAR name[DAUDIO_STRING_LENGTH+1];
	TCHAR vendor[DAUDIO_STRING_LENGTH+1];
	TCHAR description[DAUDIO_STRING_LENGTH+1];
	TCHAR version[DAUDIO_STRING_LENGTH+1];
} DirectAudioDeviceDescription;

typedef struct {
	INT32 mixerIndex;
	BOOL isSource;
	/* either LPDIRECTSOUND or LPDIRECTSOUNDCAPTURE */
	void* dev;
	/* how many instances use the dev */
	INT32 refCount;
	GUID guid;
} DS_AudioDeviceCache;

typedef struct {
	INT32 currMixerIndex;
	BOOL isSource;
} DS_RefreshCacheStruct;

typedef struct {
	int deviceID;
	/* for convenience */
	BOOL isSource;
	/* the secondary buffer (Playback) */
	LPDIRECTSOUNDBUFFER playBuffer;
	/* the secondary buffer (Capture) */
	LPDIRECTSOUNDCAPTUREBUFFER captureBuffer;

	/* size of the directsound buffer, usually 2 seconds */
	int dsBufferSizeInBytes;

	/* size of the read/write-ahead, as specified by Java */
	int bufferSizeInBytes;
	int bitsPerSample;
	int frameSize; // storage size in Bytes

	UINT64 framePos;
	/* where to write into the buffer.
	* -1 if at current position (Playback)
	* For Capture, this is the read position
	*/
	int writePos;

	/* if start() had been called */
	BOOL started;

	/* how many bytes there is silence from current write position */
	int silencedBytes;

	BOOL underrun;

} DS_Info;

#ifndef _WAVEFORMATEXTENSIBLE_
#define _WAVEFORMATEXTENSIBLE_
typedef struct {
	WAVEFORMATEX    Format;
	union {
		WORD wValidBitsPerSample;       /* bits of precision  */
		WORD wSamplesPerBlock;          /* valid if wBitsPerSample==0 */
		WORD wReserved;                 /* If neither applies, set to zero. */
	} Samples;
	DWORD           dwChannelMask;      /* which channels are */
	/* present in stream  */
	GUID            SubFormat;
} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
#endif // !_WAVEFORMATEXTENSIBLE_

#if !defined(WAVE_FORMAT_EXTENSIBLE)
#define  WAVE_FORMAT_EXTENSIBLE                 0xFFFE
#endif // !defined(WAVE_FORMAT_EXTENSIBLE)

#if !defined(DEFINE_WAVEFORMATEX_GUID)
#define DEFINE_WAVEFORMATEX_GUID(x) (USHORT)(x), 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71
#endif
#ifndef STATIC_KSDATAFORMAT_SUBTYPE_PCM
#define STATIC_KSDATAFORMAT_SUBTYPE_PCM\
	DEFINE_WAVEFORMATEX_GUID(WAVE_FORMAT_PCM)
#endif

#ifdef USE_ERROR
#define ERROR0(string)                        fprintf(stdout, (string)); fflush(stdout);
#define ERROR1(string, p1)                    fprintf(stdout, (string), (p1)); fflush(stdout);
#define ERROR2(string, p1, p2)                fprintf(stdout, (string), (p1), (p2)); fflush(stdout);
#define ERROR3(string, p1, p2, p3)            fprintf(stdout, (string), (p1), (p2), (p3)); fflush(stdout);
#define ERROR4(string, p1, p2, p3, p4)        fprintf(stdout, (string), (p1), (p2), (p3), (p4)); fflush(stdout);
#else
#define ERROR0(string)
#define ERROR1(string, p1)
#define ERROR2(string, p1, p2)
#define ERROR3(string, p1, p2, p3)
#define ERROR4(string, p1, p2, p3, p4)
#endif


// TRACE PRINTS
#ifdef USE_TRACE
#define TRACE0(string)                        fprintf(stdout, (string)); fflush(stdout);
#define TRACE1(string, p1)                    fprintf(stdout, (string), (p1)); fflush(stdout);
#define TRACE2(string, p1, p2)                fprintf(stdout, (string), (p1), (p2)); fflush(stdout);
#define TRACE3(string, p1, p2, p3)            fprintf(stdout, (string), (p1), (p2), (p3)); fflush(stdout);
#define TRACE4(string, p1, p2, p3, p4)        fprintf(stdout, (string), (p1), (p2), (p3), (p4)); fflush(stdout);
#define TRACE5(string, p1, p2, p3, p4, p5)    fprintf(stdout, (string), (p1), (p2), (p3), (p4), (p5)); fflush(stdout);
#else
#define TRACE0(string)
#define TRACE1(string, p1)
#define TRACE2(string, p1, p2)
#define TRACE3(string, p1, p2, p3)
#define TRACE4(string, p1, p2, p3, p4)
#define TRACE5(string, p1, p2, p3, p4, p5)
#endif


// VERBOSE TRACE PRINTS
#ifdef USE_VERBOSE_TRACE
#define VTRACE0(string)                 fprintf(stdout, (string));
#define VTRACE1(string, p1)             fprintf(stdout, (string), (p1));
#define VTRACE2(string, p1, p2)         printf(stdout, (string), (p1), (p2));
#define VTRACE3(string, p1, p2, p3)     fprintf(stdout, (string), (p1), (p2), (p3));
#define VTRACE4(string, p1, p2, p3, p4) fprintf(stdout, (string), (p1), (p2), (p3), (p4));
#else
#define VTRACE0(string)
#define VTRACE1(string, p1)
#define VTRACE2(string, p1, p2)
#define VTRACE3(string, p1, p2, p3)
#define VTRACE4(string, p1, p2, p3, p4)
#endif

#if (USE_DAUDIO == TRUE)
// callback from GetFormats, implemented in DirectAudioDevice.c
void DAUDIO_AddAudioFormat(void* creator, int significantBits, int frameSizeInBytes,
						   int channels, float sampleRate,
						   int encoding, int isSigned,
						   int bigEndian);


// the following methods need to be implemented by the platform dependent code

/* returns the number of mixer devices */
INT32 DAUDIO_GetDirectAudioDeviceCount();

/* returns TRUE on success, FALSE otherwise */
INT32 DAUDIO_GetDirectAudioDeviceDescription(INT32 mixerIndex,
											 DirectAudioDeviceDescription* description);

// SourceDataLine and TargetDataLine

void DAUDIO_GetFormats(INT32 mixerIndex, INT32 deviceID, int isSource, void* creator);

void* DAUDIO_Open(INT32 mixerIndex, INT32 deviceID, int isSource,
				  int encoding, float sampleRate, int sampleSizeInBits,
				  int frameSize, int channels,
				  int isSigned, int isBigEndian, int bufferSizeInBytes);
int DAUDIO_Start(void* id, int isSource);
int DAUDIO_Stop(void* id, int isSource);
void DAUDIO_Close(void* id, int isSource);
int DAUDIO_Write(void* id, char* data, int byteSize); // returns -1 on error
int DAUDIO_Read(void* id, char* data, int byteSize);  // returns -1 on error

int DAUDIO_GetBufferSize(void* id, int isSource);
int DAUDIO_StillDraining(void* id, int isSource);
int DAUDIO_Flush(void* id, int isSource);
/* in bytes */
int DAUDIO_GetAvailable(void* id, int isSource);
INT64 DAUDIO_GetBytePosition(void* id, int isSource, INT64 javaBytePos);
void DAUDIO_SetBytePosition(void* id, int isSource, INT64 javaBytePos);

int DAUDIO_RequiresServicing(void* id, int isSource);
void DAUDIO_Service(void* id, int isSource);

void DAUDIO_AddAudioFormat(void* creatorV, int significantBits, int frameSizeInBytes,
						   int channels, float sampleRate,
						   int encoding, int isSigned,
						   int bigEndian);

/*
* hdc: device context
* pRect: range
* cl: color array
* Num: color array count
* dwMode: GRADIENT_FILL_RECT_H or GRADIENT_FILL_RECT_V
*/
BOOL DrawGradient(HDC hdc, CONST RECT* pRect, CONST DWORD* cl, int Num, DWORD dwMode);

#endif

#endif