mirror of
https://github.com/opencv/opencv.git
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416 lines
8.4 KiB
C++
416 lines
8.4 KiB
C++
///////////////////////////////////////////////////////////////////////////
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//
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// Copyright (c) 2004, Industrial Light & Magic, a division of Lucas
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// Digital Ltd. LLC
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Industrial Light & Magic nor the names of
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// its contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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///////////////////////////////////////////////////////////////////////////
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//-----------------------------------------------------------------------------
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//
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// class TimeCode
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//
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//-----------------------------------------------------------------------------
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#include <ImfTimeCode.h>
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#include "Iex.h"
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namespace Imf {
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TimeCode::TimeCode ()
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{
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_time = 0;
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_user = 0;
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}
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TimeCode::TimeCode
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(int hours,
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int minutes,
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int seconds,
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int frame,
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bool dropFrame,
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bool colorFrame,
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bool fieldPhase,
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bool bgf0,
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bool bgf1,
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bool bgf2,
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int binaryGroup1,
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int binaryGroup2,
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int binaryGroup3,
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int binaryGroup4,
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int binaryGroup5,
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int binaryGroup6,
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int binaryGroup7,
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int binaryGroup8)
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{
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setHours (hours);
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setMinutes (minutes);
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setSeconds (seconds);
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setFrame (frame);
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setDropFrame (dropFrame);
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setColorFrame (colorFrame);
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setFieldPhase (fieldPhase);
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setBgf0 (bgf0);
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setBgf1 (bgf1);
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setBgf2 (bgf2);
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setBinaryGroup (1, binaryGroup1);
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setBinaryGroup (2, binaryGroup2);
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setBinaryGroup (3, binaryGroup3);
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setBinaryGroup (4, binaryGroup4);
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setBinaryGroup (5, binaryGroup5);
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setBinaryGroup (6, binaryGroup6);
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setBinaryGroup (7, binaryGroup7);
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setBinaryGroup (8, binaryGroup8);
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}
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TimeCode::TimeCode
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(unsigned int timeAndFlags,
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unsigned int userData,
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Packing packing)
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{
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setTimeAndFlags (timeAndFlags, packing);
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setUserData (userData);
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}
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TimeCode::TimeCode (const TimeCode &other)
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{
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_time = other._time;
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_user = other._user;
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}
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TimeCode &
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TimeCode::operator = (const TimeCode &other)
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{
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_time = other._time;
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_user = other._user;
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return *this;
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}
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namespace {
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unsigned int
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bitField (unsigned int value, int minBit, int maxBit)
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{
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int shift = minBit;
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unsigned int mask = (~(~0U << (maxBit - minBit + 1)) << minBit);
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return (value & mask) >> shift;
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}
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void
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setBitField (unsigned int &value, int minBit, int maxBit, unsigned int field)
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{
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int shift = minBit;
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unsigned int mask = (~(~0U << (maxBit - minBit + 1)) << minBit);
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value = ((value & ~mask) | ((field << shift) & mask));
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}
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int
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bcdToBinary (unsigned int bcd)
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{
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return int ((bcd & 0x0f) + 10 * ((bcd >> 4) & 0x0f));
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}
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unsigned int
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binaryToBcd (int binary)
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{
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int units = binary % 10;
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int tens = (binary / 10) % 10;
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return (unsigned int) (units | (tens << 4));
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}
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} // namespace
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int
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TimeCode::hours () const
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{
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return bcdToBinary (bitField (_time, 24, 29));
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}
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void
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TimeCode::setHours (int value)
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{
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if (value < 0 || value > 23)
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throw Iex::ArgExc ("Cannot set hours field in time code. "
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"New value is out of range.");
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setBitField (_time, 24, 29, binaryToBcd (value));
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}
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int
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TimeCode::minutes () const
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{
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return bcdToBinary (bitField (_time, 16, 22));
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}
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void
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TimeCode::setMinutes (int value)
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{
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if (value < 0 || value > 59)
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throw Iex::ArgExc ("Cannot set minutes field in time code. "
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"New value is out of range.");
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setBitField (_time, 16, 22, binaryToBcd (value));
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}
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int
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TimeCode::seconds () const
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{
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return bcdToBinary (bitField (_time, 8, 14));
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}
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void
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TimeCode::setSeconds (int value)
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{
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if (value < 0 || value > 59)
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throw Iex::ArgExc ("Cannot set seconds field in time code. "
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"New value is out of range.");
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setBitField (_time, 8, 14, binaryToBcd (value));
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}
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int
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TimeCode::frame () const
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{
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return bcdToBinary (bitField (_time, 0, 5));
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}
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void
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TimeCode::setFrame (int value)
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{
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if (value < 0 || value > 59)
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throw Iex::ArgExc ("Cannot set frame field in time code. "
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"New value is out of range.");
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setBitField (_time, 0, 5, binaryToBcd (value));
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}
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bool
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TimeCode::dropFrame () const
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{
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return bool (bitField (_time, 6, 6));
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}
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void
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TimeCode::setDropFrame (bool value)
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{
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setBitField (_time, 6, 6, (unsigned int) !!value);
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}
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bool
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TimeCode::colorFrame () const
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{
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return bool (bitField (_time, 7, 7));
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}
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void
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TimeCode::setColorFrame (bool value)
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{
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setBitField (_time, 7, 7, (unsigned int) !!value);
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}
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bool
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TimeCode::fieldPhase () const
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{
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return bool (bitField (_time, 15, 15));
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}
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void
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TimeCode::setFieldPhase (bool value)
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{
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setBitField (_time, 15, 15, (unsigned int) !!value);
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}
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bool
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TimeCode::bgf0 () const
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{
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return bool (bitField (_time, 23, 23));
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}
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void
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TimeCode::setBgf0 (bool value)
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{
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setBitField (_time, 23, 23, (unsigned int) !!value);
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}
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bool
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TimeCode::bgf1 () const
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{
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return bool (bitField (_time, 30, 30));
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}
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void
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TimeCode::setBgf1 (bool value)
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{
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setBitField (_time, 30, 30, (unsigned int) !!value);
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}
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bool
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TimeCode::bgf2 () const
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{
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return bool (bitField (_time, 31, 31));
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}
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void
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TimeCode::setBgf2 (bool value)
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{
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setBitField (_time, 31, 31, (unsigned int) !!value);
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}
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int
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TimeCode::binaryGroup (int group) const
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{
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if (group < 1 || group > 8)
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throw Iex::ArgExc ("Cannot extract binary group from time code "
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"user data. Group number is out of range.");
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int minBit = 4 * (group - 1);
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int maxBit = minBit + 3;
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return int (bitField (_user, minBit, maxBit));
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}
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void
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TimeCode::setBinaryGroup (int group, int value)
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{
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if (group < 1 || group > 8)
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throw Iex::ArgExc ("Cannot extract binary group from time code "
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"user data. Group number is out of range.");
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int minBit = 4 * (group - 1);
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int maxBit = minBit + 3;
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setBitField (_user, minBit, maxBit, (unsigned int) value);
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}
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unsigned int
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TimeCode::timeAndFlags (Packing packing) const
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{
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if (packing == TV50_PACKING)
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{
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unsigned int t = _time;
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t &= ~((1 << 6) | (1 << 15) | (1 << 23) | (1 << 30) | (1 << 31));
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t |= ((unsigned int) bgf0() << 15);
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t |= ((unsigned int) bgf2() << 23);
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t |= ((unsigned int) bgf1() << 30);
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t |= ((unsigned int) fieldPhase() << 31);
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return t;
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}
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if (packing == FILM24_PACKING)
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{
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return _time & ~((1 << 6) | (1 << 7));
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}
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else // packing == TV60_PACKING
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{
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return _time;
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}
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}
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void
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TimeCode::setTimeAndFlags (unsigned int value, Packing packing)
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{
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if (packing == TV50_PACKING)
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{
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_time = value &
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~((1 << 6) | (1 << 15) | (1 << 23) | (1 << 30) | (1 << 31));
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if (value & (1 << 15))
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setBgf0 (true);
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if (value & (1 << 23))
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setBgf2 (true);
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if (value & (1 << 30))
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setBgf1 (true);
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if (value & (1 << 31))
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setFieldPhase (true);
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}
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else if (packing == FILM24_PACKING)
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{
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_time = value & ~((1 << 6) | (1 << 7));
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}
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else // packing == TV60_PACKING
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{
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_time = value;
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}
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}
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unsigned int
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TimeCode::userData () const
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{
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return _user;
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}
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void
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TimeCode::setUserData (unsigned int value)
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{
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_user = value;
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}
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} // namespace Imf
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