bool VideoManager::drawNextFrame(VideoEntryPtr videoEntry) { Video::VideoDecoder *video = videoEntry->_video; const Graphics::Surface *frame = video->decodeNextFrame(); if (!frame || !videoEntry->isEnabled()) { return false; } Graphics::Surface *convertedFrame = nullptr; Graphics::PixelFormat pixelFormat = _vm->_system->getScreenFormat(); if (frame->format != pixelFormat) { // We don't support downconverting to 8bpp without having // support in the codec. Set _enableDither if shows up. if (pixelFormat.bytesPerPixel == 1) { warning("Cannot convert high color video frame to 8bpp"); return false; } // Convert to the current screen format convertedFrame = frame->convertTo(pixelFormat, video->getPalette()); frame = convertedFrame; } else if (pixelFormat.bytesPerPixel == 1 && video->hasDirtyPalette()) { // Set the palette when running in 8bpp mode only // Don't do this for Myst, which has its own per-stack handling if (_vm->getGameType() != GType_MYST) _vm->_system->getPaletteManager()->setPalette(video->getPalette(), 0, 256); } // Clip the video to make sure it stays on the screen (Myst does this a few times) Common::Rect targetRect = Common::Rect(video->getWidth(), video->getHeight()); targetRect.translate(videoEntry->getX(), videoEntry->getY()); Common::Rect frameRect = Common::Rect(video->getWidth(), video->getHeight()); if (targetRect.left < 0) { frameRect.left -= targetRect.left; targetRect.left = 0; } if (targetRect.top < 0) { frameRect.top -= targetRect.top; targetRect.top = 0; } if (targetRect.right > _vm->_system->getWidth()) { frameRect.right -= targetRect.right - _vm->_system->getWidth(); targetRect.right = _vm->_system->getWidth(); } if (targetRect.bottom > _vm->_system->getHeight()) { frameRect.bottom -= targetRect.bottom - _vm->_system->getHeight(); targetRect.bottom = _vm->_system->getHeight(); } _vm->_system->copyRectToScreen(frame->getBasePtr(frameRect.left, frameRect.top), frame->pitch, targetRect.left, targetRect.top, targetRect.width(), targetRect.height()); // Delete 8bpp conversion surface if (convertedFrame) { convertedFrame->free(); delete convertedFrame; } // We've drawn something to the screen, make sure we update it return true; }
bool VideoManager::updateMovies() { bool updateScreen = false; for (VideoList::iterator it = _videos.begin(); it != _videos.end(); ) { // Check of the video has reached the end if ((*it)->endOfVideo()) { if ((*it)->isLooping()) { // Seek back if looping (*it)->seek((*it)->getStart()); } else { // Done; close and continue on (*it)->close(); it = _videos.erase(it); continue; } } Video::VideoDecoder *video = (*it)->_video; // Ignore paused videos if (video->isPaused()) { it++; continue; } // Check if we need to draw a frame if (video->needsUpdate()) { const Graphics::Surface *frame = video->decodeNextFrame(); Graphics::Surface *convertedFrame = 0; if (frame && (*it)->isEnabled()) { Graphics::PixelFormat pixelFormat = _vm->_system->getScreenFormat(); if (frame->format != pixelFormat) { // We don't support downconverting to 8bpp without having // support in the codec. Set _enableDither if shows up. if (pixelFormat.bytesPerPixel == 1) { warning("Cannot convert high color video frame to 8bpp"); (*it)->close(); it = _videos.erase(it); continue; } // Convert to the current screen format convertedFrame = frame->convertTo(pixelFormat, video->getPalette()); frame = convertedFrame; } else if (pixelFormat.bytesPerPixel == 1 && video->hasDirtyPalette()) { // Set the palette when running in 8bpp mode only // Don't do this for Myst, which has its own per-stack handling if (_vm->getGameType() != GType_MYST) _vm->_system->getPaletteManager()->setPalette(video->getPalette(), 0, 256); } // Clip the width/height to make sure we stay on the screen (Myst does this a few times) uint16 width = MIN<int32>(video->getWidth(), _vm->_system->getWidth() - (*it)->getX()); uint16 height = MIN<int32>(video->getHeight(), _vm->_system->getHeight() - (*it)->getY()); _vm->_system->copyRectToScreen(frame->getPixels(), frame->pitch, (*it)->getX(), (*it)->getY(), width, height); // We've drawn something to the screen, make sure we update it updateScreen = true; // Delete 8bpp conversion surface if (convertedFrame) { convertedFrame->free(); delete convertedFrame; } } } // Check the video time _vm->doVideoTimer(*it, false); // Remember to increase the iterator it++; } // Return true if we need to update the screen return updateScreen; }