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101 lines
3.3 KiB
C
101 lines
3.3 KiB
C
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// File: quicktime_common.h
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//
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// QuickTime limits and constants shared among all QuickTime functions
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//
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//=============================================================================
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#ifndef QUICKTIME_COMMON_H
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#define QUICKTIME_COMMON_H
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#ifdef _WIN32
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#pragma once
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#endif
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#ifdef OSX
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// The OSX 10.7 SDK dropped support for the functions below, so we manually pull them in
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#include <dlfcn.h>
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typedef PixMapHandle
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(*PFNGetGWorldPixMap)(GWorldPtr offscreenGWorld);
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typedef Ptr
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(*PFNGetPixBaseAddr)(PixMapHandle pm);
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typedef Boolean
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(*PFNLockPixels)(PixMapHandle pm);
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typedef void
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(*PFNUnlockPixels)(PixMapHandle pm);
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typedef void
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(*PFNDisposeGWorld)(GWorldPtr offscreenGWorld);
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typedef void
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(*PFNSetGWorld)(CGrafPtr port,GDHandle gdh);
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typedef SInt32
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(*PFNGetPixRowBytes)(PixMapHandle pm);
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extern PFNGetGWorldPixMap GetGWorldPixMap;
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extern PFNGetPixBaseAddr GetPixBaseAddr;
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extern PFNLockPixels LockPixels;
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extern PFNUnlockPixels UnlockPixels;
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extern PFNDisposeGWorld DisposeGWorld;
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extern PFNSetGWorld SetGWorld;
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extern PFNGetPixRowBytes GetPixRowBytes;
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#endif
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// constant that define the bounds of various inputs
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static const int cMinVideoFrameWidth = 16;
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static const int cMinVideoFrameHeight = 16;
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static const int cMaxVideoFrameWidth = 2 * 2048;
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static const int cMaxVideoFrameHeight = 2 * 2048;
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static const int cMinFPS = 1;
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static const int cMaxFPS = 600;
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static const float cMinDuration = 0.016666666f; // 1/60th second
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static const float cMaxDuration = 3600.0f; // 1 Hour
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static const int cMinSampleRate = 11025; // 1/4 CD sample rate
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static const int cMaxSampleRate = 88200; // 2x CD rate
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#define NO_MORE_INTERESTING_TIMES -2
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#define END_OF_QUICKTIME_MOVIE -1
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// ===========================================================================
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// Macros & Utility functions
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// ===========================================================================
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#define SAFE_DISPOSE_HANDLE( _handle ) if ( _handle != nullptr ) { DisposeHandle( (Handle) _handle ); _handle = nullptr; }
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#define SAFE_DISPOSE_GWORLD( _gworld ) if ( _gworld != nullptr ) { DisposeGWorld( _gworld ); _gworld = nullptr; }
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#define SAFE_DISPOSE_MOVIE( _movie ) if ( _movie != nullptr ) { DisposeMovie( _movie ); ThreadSleep(10); Assert( GetMoviesError() == noErr ); _movie = nullptr; }
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#define SAFE_RELEASE_AUDIOCONTEXT( _cxt ) if ( _cxt != nullptr ) { QTAudioContextRelease( _cxt ); _cxt = nullptr; }
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#define SAFE_RELEASE_CFREF( _ref ) if ( _ref != nullptr ) { CFRelease( _ref ); _ref = nullptr; }
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// Utility functions
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extern char *COPY_STRING( const char *pString );
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bool MovieGetStaticFrameRate( Movie inMovie, VideoFrameRate_t &theFrameRate );
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bool SetGWorldDecodeGamma( CGrafPtr theGWorld, VideoPlaybackGamma_t gamma );
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bool CreateMovieAudioContext( bool enableAudio, Movie inMovie, QTAudioContextRef *pAudioConectext, bool setVolume = false, float *pCurrentVolume = nullptr );
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VideoPlaybackGamma_t GetSystemPlaybackGamma();
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//-----------------------------------------------------------------------------
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// Computes a power of two at least as big as the passed-in number
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//-----------------------------------------------------------------------------
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static inline int ComputeGreaterPowerOfTwo( int n )
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{
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int i = 1;
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while ( i < n )
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{
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i <<= 1;
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}
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return i;
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}
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#endif // QUICKTIME_COMMON_H
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