129 lines
3.5 KiB
C++
129 lines
3.5 KiB
C++
// Copyright (c) 2007, Rodrigo Braz Monteiro
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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 met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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//
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// $Id$
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/// @file video_frame.cpp
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/// @brief Wrapper around a frame of video data
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/// @ingroup video
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///
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#include "config.h"
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//#include "utils.h"
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#include "libaegisub/media_video_frame.h"
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namespace agi {
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namespace media {
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void AegiVideoFrame::Reset() {
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// Zero variables
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data = 0;
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pitch = 0;
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memSize = 0;
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w = 0;
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h = 0;
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// Set properties
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flipped = false;
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invertChannels = true;
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ownMem = true;
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}
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AegiVideoFrame::AegiVideoFrame() {
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Reset();
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}
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/// @brief Create a solid black frame of the request size and format
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/// @param width
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/// @param height
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AegiVideoFrame::AegiVideoFrame(unsigned int width, unsigned int height) {
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assert(width > 0 && width < 10000);
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assert(height > 0 && height < 10000);
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Reset();
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// Set format
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w = width;
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h = height;
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pitch = w * GetBpp();
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Allocate();
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memset(data, 0, pitch * height);
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}
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void AegiVideoFrame::Allocate() {
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assert(pitch > 0 && pitch < 10000);
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assert(w > 0 && w < 10000);
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assert(h > 0 && h < 10000);
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unsigned int size = pitch * h;
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// Reallocate, if necessary
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if (memSize != size || !ownMem) {
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if (ownMem) {
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delete[] data;
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}
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data = new unsigned char[size];
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memSize = size;
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}
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ownMem = true;
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}
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void AegiVideoFrame::Clear() {
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if (ownMem) delete[] data;
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Reset();
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}
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void AegiVideoFrame::CopyFrom(const AegiVideoFrame &source) {
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w = source.w;
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h = source.h;
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pitch = source.pitch;
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Allocate();
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memcpy(data, source.data, memSize);
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flipped = source.flipped;
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invertChannels = source.invertChannels;
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}
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void AegiVideoFrame::SetTo(const unsigned char *source, unsigned int width, unsigned int height, unsigned int pitch) {
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assert(pitch > 0 && pitch < 10000);
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assert(width > 0 && width < 10000);
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assert(height > 0 && height < 10000);
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ownMem = false;
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w = width;
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h = height;
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// Note that despite this cast, the contents of data should still never be modified
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data = const_cast<unsigned char*>(source);
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this->pitch = pitch;
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}
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} // namespace media
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} // namespace agi
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