118 lines
3.6 KiB
C++
118 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "common/config-manager.h"
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#include "common/file.h"
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#include "common/memstream.h"
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#include "common/ptr.h"
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#include "dgds/sound/resource/sci_resource.h"
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#include "dgds/dgds.h"
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#include "dgds/includes.h"
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namespace Dgds {
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//
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// Unlike the other files in this directory, this is not part of the SCI
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// engine. This is a single function to load patch data from the DGDS
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// resource system.
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//
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static const char *PATCH_RESOURCES[] = {
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"SXTITLE.OVL", // dragon
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"SXCODE1.OVL", // hoc (TODO: when do we load SXCODE2 - maybe when global 0x37 changes)
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"SX.OVL", // newer games (beamish, sq5 demo)
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};
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SciResource *getMidiPatchData(int num) {
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assert(num < 999);
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DgdsEngine *engine = DgdsEngine::getInstance();
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ResourceManager *resource = engine->getResourceManager();
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Decompressor *decomp = engine->getDecompressor();
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Common::ScopedPtr<ResourceManager> fddMgr;
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Common::ScopedPtr<Common::SeekableReadStream> ovlStream;
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int resNum = 0;
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for (; resNum < ARRAYSIZE(PATCH_RESOURCES); resNum++) {
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ovlStream.reset(resource->getResource(PATCH_RESOURCES[resNum]));
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if (ovlStream)
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break;
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}
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//
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// WORKAROUND: The MT-32 patch data in Willy Beamish CD version is corrupted.
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// If the FDD version is avaialble in the "FDD" directory, use that instead.
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// This is how the data comes arranged in the GOG version.
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//
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if (num == 1 && engine->getGameId() == GID_WILLY) {
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fddMgr.reset(new ResourceManager("FDD"));
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if (fddMgr.get()->hasResource("SX.OVL")) {
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debug("Overriding MT32 patch data with patches from FDD version.");
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resNum = 2;
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ovlStream.reset(fddMgr.get()->getResource("SX.OVL"));
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}
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}
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if (!ovlStream) {
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warning("Couldn't load DGDS midi patch data from any known OVL file");
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return nullptr;
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}
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DgdsChunkReader chunk(ovlStream.get());
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const Common::String targetSection = Common::String::format("%03d:", num);
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while (chunk.readNextHeader(EX_OVL, PATCH_RESOURCES[resNum])) {
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if (chunk.isContainer()) {
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continue;
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}
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if (chunk.isSection(targetSection)) {
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chunk.readContent(decomp);
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Common::SeekableReadStream *stream = chunk.getContent();
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byte magic = stream->readSByte(); // always 137?
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byte strLen = stream->readSByte(); // header string len
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char *buf = new char[strLen + 1];
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stream->read(buf, strLen);
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buf[strLen] = '\0';
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int dataLen = stream->size() - (strLen + 2);
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byte *data = new byte[dataLen];
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debug(1, "midi patch %s loading magic %d str '%s'", targetSection.c_str(), magic, buf);
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delete [] buf;
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stream->read(data, dataLen);
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return new SciResource(data, dataLen, num);
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} else {
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chunk.skipContent();
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}
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}
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warning("Didn't find section %s in midi patch resource %s", targetSection.c_str(), PATCH_RESOURCES[resNum]);
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return nullptr;
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}
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} // end namespace Dgds
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