/* IDirectMusicChordMap Implementation
 *
 * Copyright (C) 2003-2004 Rok Mandeljc
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "dmcompos_private.h"
#include "dmobject.h"

WINE_DEFAULT_DEBUG_CHANNEL(dmcompos);
WINE_DECLARE_DEBUG_CHANNEL(dmfile);

/*****************************************************************************
 * IDirectMusicChordMapImpl implementation
 */
typedef struct IDirectMusicChordMapImpl {
    IDirectMusicChordMap IDirectMusicChordMap_iface;
    struct dmobject dmobj;
    LONG  ref;
} IDirectMusicChordMapImpl;

/* IDirectMusicChordMapImpl IDirectMusicChordMap part: */
static inline IDirectMusicChordMapImpl *impl_from_IDirectMusicChordMap(IDirectMusicChordMap *iface)
{
    return CONTAINING_RECORD(iface, IDirectMusicChordMapImpl, IDirectMusicChordMap_iface);
}

static HRESULT WINAPI IDirectMusicChordMapImpl_QueryInterface(IDirectMusicChordMap *iface,
        REFIID riid, void **ret_iface)
{
    IDirectMusicChordMapImpl *This = impl_from_IDirectMusicChordMap(iface);

    TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ret_iface);

    *ret_iface = NULL;

    if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDirectMusicChordMap))
        *ret_iface = iface;
    else if (IsEqualIID(riid, &IID_IDirectMusicObject))
        *ret_iface = &This->dmobj.IDirectMusicObject_iface;
    else if (IsEqualIID(riid, &IID_IPersistStream))
        *ret_iface = &This->dmobj.IPersistStream_iface;
    else {
        WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ret_iface);
        return E_NOINTERFACE;
    }

    IUnknown_AddRef((IUnknown*)*ret_iface);
    return S_OK;
}

static ULONG WINAPI IDirectMusicChordMapImpl_AddRef(IDirectMusicChordMap *iface)
{
    IDirectMusicChordMapImpl *This = impl_from_IDirectMusicChordMap(iface);
    LONG ref = InterlockedIncrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    return ref;
}

static ULONG WINAPI IDirectMusicChordMapImpl_Release(IDirectMusicChordMap *iface)
{
    IDirectMusicChordMapImpl *This = impl_from_IDirectMusicChordMap(iface);
    LONG ref = InterlockedDecrement(&This->ref);

    TRACE("(%p) ref=%d\n", This, ref);

    if (!ref) {
        HeapFree(GetProcessHeap(), 0, This);
        DMCOMPOS_UnlockModule();
    }

    return ref;
}

static HRESULT WINAPI IDirectMusicChordMapImpl_GetScale(IDirectMusicChordMap *iface,
        DWORD *pdwScale)
{
    IDirectMusicChordMapImpl *This = impl_from_IDirectMusicChordMap(iface);
    FIXME("(%p, %p): stub\n", This, pdwScale);
    return S_OK;
}

static const IDirectMusicChordMapVtbl dmchordmap_vtbl = {
    IDirectMusicChordMapImpl_QueryInterface,
    IDirectMusicChordMapImpl_AddRef,
    IDirectMusicChordMapImpl_Release,
    IDirectMusicChordMapImpl_GetScale
};

/* IDirectMusicChordMapImpl IDirectMusicObject part: */
static HRESULT WINAPI chord_IDirectMusicObject_ParseDescriptor(IDirectMusicObject *iface,
        IStream *stream, DMUS_OBJECTDESC *desc)
{
    struct chunk_entry riff = {0};
    HRESULT hr;

    TRACE("(%p, %p, %p)\n", iface, stream, desc);

    if (!stream || !desc)
        return E_POINTER;

    if ((hr = stream_get_chunk(stream, &riff)) != S_OK)
        return hr;
    if (riff.id != FOURCC_RIFF || riff.type != DMUS_FOURCC_CHORDMAP_FORM) {
        TRACE("loading failed: unexpected %s\n", debugstr_chunk(&riff));
        stream_skip_chunk(stream, &riff);
        return DMUS_E_CHUNKNOTFOUND;
    }

    hr = dmobj_parsedescriptor(stream, &riff, desc, DMUS_OBJ_OBJECT);
    if (FAILED(hr))
        return hr;

    desc->guidClass = CLSID_DirectMusicChordMap;
    desc->dwValidData |= DMUS_OBJ_CLASS;

    TRACE("returning descriptor:\n");
    dump_DMUS_OBJECTDESC(desc);

    return S_OK;
}

static const IDirectMusicObjectVtbl dmobject_vtbl = {
    dmobj_IDirectMusicObject_QueryInterface,
    dmobj_IDirectMusicObject_AddRef,
    dmobj_IDirectMusicObject_Release,
    dmobj_IDirectMusicObject_GetDescriptor,
    dmobj_IDirectMusicObject_SetDescriptor,
    chord_IDirectMusicObject_ParseDescriptor
};

/* IDirectMusicChordMapImpl IPersistStream part: */
static inline IDirectMusicChordMapImpl *impl_from_IPersistStream(IPersistStream *iface)
{
    return CONTAINING_RECORD(iface, IDirectMusicChordMapImpl, dmobj.IPersistStream_iface);
}

static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *pStm)
{
        IDirectMusicChordMapImpl *This = impl_from_IPersistStream(iface);
	FOURCC chunkID;
	DWORD chunkSize, StreamSize, StreamCount, ListSize[3], ListCount[3];
	LARGE_INTEGER liMove; /* used when skipping chunks */

	FIXME("(%p, %p): Loading not implemented yet\n", This, pStm);
	IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
	IStream_Read (pStm, &chunkSize, sizeof(DWORD), NULL);
	TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
	switch (chunkID) {	
		case FOURCC_RIFF: {
			IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);				
			TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(chunkID));
			StreamSize = chunkSize - sizeof(FOURCC);
			StreamCount = 0;
			switch (chunkID) {
				case DMUS_FOURCC_CHORDMAP_FORM: {
					TRACE_(dmfile)(": chordmap form\n");
					do {
						IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
						IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
						StreamCount += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
						TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
						switch (chunkID) {
							case DMUS_FOURCC_GUID_CHUNK: {
								TRACE_(dmfile)(": GUID chunk\n");
								This->dmobj.desc.dwValidData |= DMUS_OBJ_OBJECT;
								IStream_Read (pStm, &This->dmobj.desc.guidObject, chunkSize, NULL);
								break;
							}
							case DMUS_FOURCC_VERSION_CHUNK: {
								TRACE_(dmfile)(": version chunk\n");
								This->dmobj.desc.dwValidData |= DMUS_OBJ_VERSION;
								IStream_Read (pStm, &This->dmobj.desc.vVersion, chunkSize, NULL);
								break;
							}
							case DMUS_FOURCC_CATEGORY_CHUNK: {
								TRACE_(dmfile)(": category chunk\n");
								This->dmobj.desc.dwValidData |= DMUS_OBJ_CATEGORY;
								IStream_Read (pStm, This->dmobj.desc.wszCategory, chunkSize, NULL);
								break;
							}
							case FOURCC_LIST: {
								IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);				
								TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunkID));
								ListSize[0] = chunkSize - sizeof(FOURCC);
								ListCount[0] = 0;
								switch (chunkID) {
									case DMUS_FOURCC_UNFO_LIST: {
										TRACE_(dmfile)(": UNFO list\n");
										do {
											IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
											IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
											ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
											TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
											switch (chunkID) {
												/* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
                                              (though strings seem to be valid unicode) */
												case mmioFOURCC('I','N','A','M'):
												case DMUS_FOURCC_UNAM_CHUNK: {
													TRACE_(dmfile)(": name chunk\n");
													This->dmobj.desc.dwValidData |= DMUS_OBJ_NAME;
													IStream_Read (pStm, This->dmobj.desc.wszName, chunkSize, NULL);
													break;
												}
												case mmioFOURCC('I','A','R','T'):
												case DMUS_FOURCC_UART_CHUNK: {
													TRACE_(dmfile)(": artist chunk (ignored)\n");
													liMove.QuadPart = chunkSize;
													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
													break;
												}
												case mmioFOURCC('I','C','O','P'):
												case DMUS_FOURCC_UCOP_CHUNK: {
													TRACE_(dmfile)(": copyright chunk (ignored)\n");
													liMove.QuadPart = chunkSize;
													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
													break;
												}
												case mmioFOURCC('I','S','B','J'):
												case DMUS_FOURCC_USBJ_CHUNK: {
													TRACE_(dmfile)(": subject chunk (ignored)\n");
													liMove.QuadPart = chunkSize;
													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
													break;
												}
												case mmioFOURCC('I','C','M','T'):
												case DMUS_FOURCC_UCMT_CHUNK: {
													TRACE_(dmfile)(": comment chunk (ignored)\n");
													liMove.QuadPart = chunkSize;
													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
													break;
												}
												default: {
													TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
													liMove.QuadPart = chunkSize;
													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
													break;						
												}
											}
											TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
										} while (ListCount[0] < ListSize[0]);
										break;
									}
									default: {
										TRACE_(dmfile)(": unknown (skipping)\n");
										liMove.QuadPart = chunkSize - sizeof(FOURCC);
										IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
										break;						
									}
								}
								break;
							}	
							default: {
								TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
								liMove.QuadPart = chunkSize;
								IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
								break;						
							}
						}
						TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
					} while (StreamCount < StreamSize);
					break;
				}
				default: {
					TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
					liMove.QuadPart = StreamSize;
					IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
					return E_FAIL;
				}
			}
			TRACE_(dmfile)(": reading finished\n");
			break;
		}
		default: {
			TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
			liMove.QuadPart = chunkSize;
			IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
			return E_FAIL;
		}
	}

	return S_OK;
}

static const IPersistStreamVtbl persiststream_vtbl = {
    dmobj_IPersistStream_QueryInterface,
    dmobj_IPersistStream_AddRef,
    dmobj_IPersistStream_Release,
    dmobj_IPersistStream_GetClassID,
    unimpl_IPersistStream_IsDirty,
    IPersistStreamImpl_Load,
    unimpl_IPersistStream_Save,
    unimpl_IPersistStream_GetSizeMax
};

/* for ClassFactory */
HRESULT WINAPI create_dmchordmap(REFIID lpcGUID, void **ppobj)
{
	IDirectMusicChordMapImpl* obj;
        HRESULT hr;

	obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicChordMapImpl));
	if (NULL == obj) {
		*ppobj = NULL;
		return E_OUTOFMEMORY;
	}
        obj->IDirectMusicChordMap_iface.lpVtbl = &dmchordmap_vtbl;
        obj->ref = 1;
        dmobject_init(&obj->dmobj, &CLSID_DirectMusicChordMap,
                (IUnknown *)&obj->IDirectMusicChordMap_iface);
        obj->dmobj.IDirectMusicObject_iface.lpVtbl = &dmobject_vtbl;
        obj->dmobj.IPersistStream_iface.lpVtbl = &persiststream_vtbl;

        DMCOMPOS_LockModule();
        hr = IDirectMusicChordMap_QueryInterface(&obj->IDirectMusicChordMap_iface, lpcGUID, ppobj);
        IDirectMusicChordMap_Release(&obj->IDirectMusicChordMap_iface);

        return hr;
}
