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49 lines
1.2 KiB
49 lines
1.2 KiB
5 years ago
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//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// File: webm_common.h
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//
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// WebM limits and constants shared among all QuickTime functions
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//
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//=============================================================================
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#ifndef WEBM_COMMON_H
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#define WEBM_COMMON_H
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#ifdef _WIN32
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#pragma once
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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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//-----------------------------------------------------------------------------
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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 // WEBM_COMMON_H
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