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415 lines
8.2 KiB
415 lines
8.2 KiB
/////////////////////////////////////////////////////////////////////////// |
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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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