/* 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 2 * 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, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * $URL$ * $Id$ * */ /* * This code is based on Broken Sword 2.5 engine * * Copyright (c) Malte Thiesen, Daniel Queteschiner and Michael Elsdoerfer * * Licensed under GNU GPL v2 * */ // ----------------------------------------------------------------------------- // Includes // ----------------------------------------------------------------------------- #include "sword25/fmv/oggtheora/oggstreamstate.h" namespace Sword25 { // ----------------------------------------------------------------------------- OggStreamState::OggStreamState(int SerialNo) { ogg_stream_init(&m_State, SerialNo); } // ----------------------------------------------------------------------------- OggStreamState::~OggStreamState() { ogg_stream_clear(&m_State); // Alle gepufferten Pages löschen. while (!m_PageBuffer.empty()) { delete [] m_PageBuffer.front().header; delete [] m_PageBuffer.front().body; m_PageBuffer.pop(); } } // ----------------------------------------------------------------------------- int OggStreamState::PageIn(ogg_page *PagePtr) { return ogg_stream_pagein(&m_State, PagePtr); } // ----------------------------------------------------------------------------- int OggStreamState::PacketOut(ogg_packet *PacketPtr) { return ogg_stream_packetout(&m_State, PacketPtr); } // ----------------------------------------------------------------------------- void OggStreamState::BufferPage(ogg_page *PagePtr) { if (PageBelongsToStream(PagePtr)) { // Pages können nicht direkt gespeichert werden, da die Pointer im Laufe der Zeit ungültig werden. // Daher wird an dieser Stelle eine tiefe Kopie der Page im erzeugt und im Pagebuffer angelegt. ogg_page PageCopy; PageCopy.header_len = PagePtr->header_len; PageCopy.header = new unsigned char[PageCopy.header_len]; memcpy(PageCopy.header, PagePtr->header, PageCopy.header_len); PageCopy.body_len = PagePtr->body_len; PageCopy.body = new unsigned char[PageCopy.body_len]; memcpy(PageCopy.body, PagePtr->body, PageCopy.body_len); m_PageBuffer.push(PageCopy); } } // ----------------------------------------------------------------------------- int OggStreamState::PageInBufferedPage() { if (GetPageBufferSize() > 0) { // Page in den Stream einfügen, löschen und aus dem Puffer entfernen. int Result = PageIn(&m_PageBuffer.front()); delete [] m_PageBuffer.front().header; delete [] m_PageBuffer.front().body; m_PageBuffer.pop(); return Result; } return -1; } // ----------------------------------------------------------------------------- unsigned int OggStreamState::GetPageBufferSize() const { return m_PageBuffer.size(); } // ----------------------------------------------------------------------------- unsigned int OggStreamState::GetUnprocessedBytes() const { return m_State.body_fill - m_State.body_returned; } // ----------------------------------------------------------------------------- bool OggStreamState::PageBelongsToStream(ogg_page *PagePtr) const { return m_State.serialno == ogg_page_serialno(PagePtr); } } // End of namespace Sword25