//////////

//

//  File:       SndEqualizer.c

//

//  Contains:   Sample code for displaying a graphic equalizer (a la QuickTime Player).

//

//  Written by: Tim Monroe

//

//  Copyright:  © 2000 by Apple Computer, Inc., all rights reserved.

//

//  Change History (most recent first):

//

//     <1>      09/28/99    rtm     first file

//   

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#pragma once

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//

// header files

//

//////////

#ifndef __MOVIES__

#include <Movies.h>

#endif

#ifndef _STRING_H

#include <string.h>

#endif

#ifndef __MEDIAHANDLERS__

#include <MediaHandlers.h>

#endif

#ifndef __MACWINDOWS__

#include <MacWindows.h>

#endif

#if TARGET_OS_MAC

#include "MacFramework.h"

#endif

#if TARGET_OS_WIN32

#include "WinFramework.h"

#endif

#include "ComApplication.h"

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//

// constants

//

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#define kSndEqResID             1000    // resource ID of DLOG resource to contain the equalizer

#define kSndEqUserItemIndex     1       // index of user item we draw the equalizer into

#define kSndEqTickThreshold     5       // the number of ticks we wait before updating display

// the band frequencies (these are the same bands used by QuickTime Player)

#define kBandFreq0              0x00C80000;         // 00200 Hz

#define kBandFreq1              0x01900000;         // 00400 Hz

#define kBandFreq2              0x03200000;         // 00800 Hz

#define kBandFreq3              0x06400000;         // 01600 Hz

#define kBandFreq4              0x0C800000;         // 03200 Hz

#define kBandFreq5              0x19000000;         // 06400 Hz

#define kBandFreq6              0x32000000;         // 12800 Hz

#define kBandFreq7              0x52080000;         // 21000 Hz

#define kSndEqNumCmdsInQueue    4                   // number of commands in a sound channel queue

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//

// function prototypes

//

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OSErr                           SndEq_Init (void);

OSErr                           SndEq_Stop (void);

Handle                          SndEq_InitWindowData (WindowObject theWindowObject);

OSErr                           SndEq_DumpWindowData (WindowObject theWindowObject);

OSErr                           SndEq_ShowDialog (void);

OSErr                           SndEq_HideDialog (void);

OSErr                           SndEq_ToggleDialog (void);

OSErr                           SndEq_UpdateMovieLevels (WindowObject theWindowObject);

PASCAL_RTN void                 SndEq_UserItemProcedure (DialogPtr theDialog, short theItem);

OSErr                           SndEq_InitSoundResource (void);

OSErr                           SndEq_StopSoundResource (void);

SndListHandle                   SndEq_OpenSoundFile (void);

void                            SndEq_CloseSoundFile (void);

void                            SndEq_PlaySoundResource (SndListHandle theSndResource);

OSErr                           SndEq_UpdateResourceLevels (void);

PASCAL_RTN void                 SndEq_CallbackProc (SndChannelPtr theChannel, SndCommand *theCommand);