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engines/ultima/ultima8/gfx/avi_player.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/ultima8/audio/music_process.h"
+#include "ultima/ultima8/gfx/avi_player.h"
+#include "ultima/ultima8/gfx/render_surface.h"
+#include "ultima/ultima8/gfx/texture.h"
+#include "video/avi_decoder.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+AVIPlayer::AVIPlayer(Common::SeekableReadStream *rs, int width, int height, const byte *overridePal, bool noScale)
+	: MoviePlayer(), _playing(false), _width(width), _height(height),
+	  _doubleSize(false), _pausedMusic(false), _overridePal(overridePal) {
+	_decoder = new Video::AVIDecoder();
+	_decoder->loadStream(rs);
+	uint32 vidWidth = _decoder->getWidth();
+	uint32 vidHeight = _decoder->getHeight();
+	if (vidWidth <= _width / 2 && vidHeight <= _height / 2 && !noScale) {
+		_doubleSize = true;
+		vidHeight *= 2;
+		vidWidth *= 2;
+	}
+	_xoff = _width / 2 - (vidWidth / 2);
+	_yoff = _height / 2 - (vidHeight / 2);
+	_currentFrame.create(vidWidth, vidHeight, _decoder->getPixelFormat());
+	_currentFrame.fillRect(Common::Rect(0, 0, vidWidth, vidHeight),
+						   _decoder->getPixelFormat().RGBToColor(0, 0, 0));
+	if (_currentFrame.format.bytesPerPixel == 1)
+		_currentFrame.setTransparentColor(0);
+}
+
+AVIPlayer::~AVIPlayer() {
+	delete _decoder;
+}
+
+void AVIPlayer::start() {
+	MusicProcess *music = MusicProcess::get_instance();
+	if (music && music->isPlaying()) {
+		music->pauseMusic();
+		_pausedMusic = true;
+	}
+
+	_playing = true;
+	_decoder->start();
+}
+
+void AVIPlayer::stop() {
+	MusicProcess *music = MusicProcess::get_instance();
+	if (music && _pausedMusic) {
+		music->unpauseMusic();
+		_pausedMusic = false;
+	}
+
+	_playing = false;
+	_decoder->stop();
+}
+
+void AVIPlayer::paint(RenderSurface *surf, int /*lerp*/) {
+	if (_decoder->endOfVideo()) {
+		_playing = false;
+		return;
+	}
+	if (_decoder->needsUpdate())
+	{
+		const Graphics::Surface *frame = _decoder->decodeNextFrame();
+		if (!frame || _decoder->getCurFrame() < 0) {
+			// Some sort of decoding error?
+			_playing = false;
+			return;
+		}
+		if (frame->format.bytesPerPixel == 1) {
+			const byte *pal;
+			if (_overridePal)
+				pal = _overridePal;
+			else
+				pal = _decoder->getPalette();
+
+			_currentFrame.setPalette(pal, 0, 256);
+		}
+		if (_doubleSize) {
+			// TODO: Add support for multiple bytes per pixel
+			assert(_currentFrame.w == frame->w * 2 && _currentFrame.h == frame->h * 2);
+			const int bpp = frame->format.bytesPerPixel;
+			for (int y = 0; y < frame->h; y++) {
+				const uint8 *srcPixel = static_cast<const uint8 *>(frame->getPixels()) + frame->pitch * y;
+				uint8 *dstPixels = static_cast<uint8 *>(_currentFrame.getPixels()) + _currentFrame.pitch * y * 2;
+				for (int x = 0; x < frame->w; x++) {
+					for (int i = 0; i < bpp; i++) {
+						dstPixels[x * 2 * bpp + i] = *srcPixel;
+						dstPixels[x * 2 * bpp + i + bpp] = *srcPixel;
+						srcPixel++;
+					}
+				}
+			}
+		} else {
+			_currentFrame.blitFrom(*frame);
+		}
+	}
+
+	uint32 color = TEX32_PACK_RGB(0, 0, 0);
+	surf->fill32(color, _xoff, _yoff, _currentFrame.w, _currentFrame.h);
+	Common::Rect srcRect(_currentFrame.w, _currentFrame.h);
+	surf->Blit(_currentFrame, srcRect, _xoff, _yoff);
+}
+
+void AVIPlayer::run() {
+	if (_decoder->endOfVideo()) {
+		_playing = false;
+	}
+}
+
+int AVIPlayer::getFrameNo() const {
+	return _decoder->getCurFrame();
+}
+
+void AVIPlayer::setOffset(int xoff, int yoff) {
+	_xoff = xoff;
+	_yoff = yoff;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima