mirror of https://github.com/odrling/Aegisub
117 lines
2.7 KiB
C++
117 lines
2.7 KiB
C++
// Copyright (c) 2007, Rodrigo Braz Monteiro <amz@aegisub.org>
|
|
//
|
|
// Permission to use, copy, modify, and distribute this software for any
|
|
// purpose with or without fee is hereby granted, provided that the above
|
|
// copyright notice and this permission notice appear in all copies.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
//
|
|
// $Id$
|
|
|
|
/// @file video_frame.cpp
|
|
/// @brief Wrapper around a frame of video data
|
|
/// @ingroup video
|
|
///
|
|
|
|
#include "config.h"
|
|
|
|
#include "libmedia/video_frame.h"
|
|
|
|
#ifndef LAGI_PRE
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#endif
|
|
|
|
namespace media {
|
|
|
|
void AegiVideoFrame::Reset() {
|
|
// Zero variables
|
|
data = 0;
|
|
pitch = 0;
|
|
memSize = 0;
|
|
w = 0;
|
|
h = 0;
|
|
|
|
// Set properties
|
|
flipped = false;
|
|
invertChannels = true;
|
|
ownMem = true;
|
|
}
|
|
|
|
AegiVideoFrame::AegiVideoFrame() {
|
|
Reset();
|
|
}
|
|
|
|
/// @brief Create a solid black frame of the request size and format
|
|
/// @param width
|
|
/// @param height
|
|
AegiVideoFrame::AegiVideoFrame(unsigned int width, unsigned int height) {
|
|
assert(width > 0 && width < 10000);
|
|
assert(height > 0 && height < 10000);
|
|
|
|
Reset();
|
|
|
|
// Set format
|
|
w = width;
|
|
h = height;
|
|
pitch = w * GetBpp();
|
|
|
|
Allocate();
|
|
memset(data, 0, pitch * height);
|
|
}
|
|
|
|
void AegiVideoFrame::Allocate() {
|
|
assert(pitch > 0 && pitch < 10000);
|
|
assert(w > 0 && w < 10000);
|
|
assert(h > 0 && h < 10000);
|
|
|
|
unsigned int size = pitch * h;
|
|
|
|
// Reallocate, if necessary
|
|
if (memSize != size || !ownMem) {
|
|
if (ownMem) {
|
|
delete[] data;
|
|
}
|
|
data = new unsigned char[size];
|
|
memSize = size;
|
|
}
|
|
|
|
ownMem = true;
|
|
}
|
|
|
|
void AegiVideoFrame::Clear() {
|
|
if (ownMem) delete[] data;
|
|
Reset();
|
|
}
|
|
|
|
void AegiVideoFrame::CopyFrom(const AegiVideoFrame &source) {
|
|
w = source.w;
|
|
h = source.h;
|
|
pitch = source.pitch;
|
|
Allocate();
|
|
memcpy(data, source.data, memSize);
|
|
flipped = source.flipped;
|
|
invertChannels = source.invertChannels;
|
|
}
|
|
|
|
void AegiVideoFrame::SetTo(const unsigned char *source, unsigned int width, unsigned int height, unsigned int pitch) {
|
|
assert(pitch > 0 && pitch < 10000);
|
|
assert(width > 0 && width < 10000);
|
|
assert(height > 0 && height < 10000);
|
|
|
|
ownMem = false;
|
|
w = width;
|
|
h = height;
|
|
// Note that despite this cast, the contents of data should still never be modified
|
|
data = const_cast<unsigned char*>(source);
|
|
this->pitch = pitch;
|
|
}
|
|
|
|
} // namespace media
|