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307 lines
10 KiB
C
307 lines
10 KiB
C
/* IDirectMusicInstrument Implementation
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*
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* Copyright (C) 2003-2004 Rok Mandeljc
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "dmusic_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
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static const GUID IID_IDirectMusicInstrumentPRIVATE = {0xbcb20080,0xa40c,0x11d1,{0x86,0xbc,0x00,0xc0,0x4f,0xbf,0x8f,0xef}};
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static ULONG WINAPI IDirectMusicInstrumentImpl_IUnknown_AddRef (LPUNKNOWN iface);
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static ULONG WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_AddRef (LPDIRECTMUSICINSTRUMENT iface);
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/* IDirectMusicInstrument IUnknown part: */
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static HRESULT WINAPI IDirectMusicInstrumentImpl_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, UnknownVtbl, iface);
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TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
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if (IsEqualIID (riid, &IID_IUnknown)) {
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*ppobj = &This->UnknownVtbl;
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IDirectMusicInstrumentImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
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return S_OK;
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} else if (IsEqualIID (riid, &IID_IDirectMusicInstrument)) {
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*ppobj = &This->InstrumentVtbl;
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_AddRef ((LPDIRECTMUSICINSTRUMENT)&This->InstrumentVtbl);
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return S_OK;
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} else if (IsEqualIID (riid, &IID_IDirectMusicInstrumentPRIVATE)) {
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/* it seems to me that this interface is only basic IUnknown, without any
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other inherited functions... *sigh* this is the worst scenario, since it means
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that whoever calls it knows the layout of original implementation table and therefore
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tries to get data by direct access... expect crashes */
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FIXME("*sigh*... requested private/unspecified interface\n");
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*ppobj = &This->UnknownVtbl;
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IDirectMusicInstrumentImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
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return S_OK;
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}
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WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_IUnknown_AddRef (LPUNKNOWN iface) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, UnknownVtbl, iface);
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ULONG refCount = InterlockedIncrement(&This->ref);
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TRACE("(%p)->(ref before=%u)\n", This, refCount - 1);
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DMUSIC_LockModule();
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return refCount;
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_IUnknown_Release (LPUNKNOWN iface) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, UnknownVtbl, iface);
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ULONG refCount = InterlockedDecrement(&This->ref);
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TRACE("(%p)->(ref before=%u)\n", This, refCount + 1);
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if (!refCount) {
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HeapFree(GetProcessHeap(), 0, This);
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}
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DMUSIC_UnlockModule();
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return refCount;
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}
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static const IUnknownVtbl DirectMusicInstrument_Unknown_Vtbl = {
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IDirectMusicInstrumentImpl_IUnknown_QueryInterface,
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IDirectMusicInstrumentImpl_IUnknown_AddRef,
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IDirectMusicInstrumentImpl_IUnknown_Release
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};
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/* IDirectMusicInstrumentImpl IDirectMusicInstrument part: */
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static HRESULT WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_QueryInterface (LPDIRECTMUSICINSTRUMENT iface, REFIID riid, LPVOID *ppobj) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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return IDirectMusicInstrumentImpl_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_AddRef (LPDIRECTMUSICINSTRUMENT iface) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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return IDirectMusicInstrumentImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_Release (LPDIRECTMUSICINSTRUMENT iface) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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return IDirectMusicInstrumentImpl_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
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}
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static HRESULT WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_GetPatch (LPDIRECTMUSICINSTRUMENT iface, DWORD* pdwPatch) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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TRACE("(%p, %p)\n", This, pdwPatch);
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*pdwPatch = MIDILOCALE2Patch(&This->pHeader->Locale);
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return S_OK;
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}
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static HRESULT WINAPI IDirectMusicInstrumentImpl_IDirectMusicInstrument_SetPatch (LPDIRECTMUSICINSTRUMENT iface, DWORD dwPatch) {
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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TRACE("(%p, %d): stub\n", This, dwPatch);
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Patch2MIDILOCALE(dwPatch, &This->pHeader->Locale);
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return S_OK;
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}
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static const IDirectMusicInstrumentVtbl DirectMusicInstrument_Instrument_Vtbl = {
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_QueryInterface,
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_AddRef,
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_Release,
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_GetPatch,
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IDirectMusicInstrumentImpl_IDirectMusicInstrument_SetPatch
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};
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/* for ClassFactory */
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HRESULT DMUSIC_CreateDirectMusicInstrumentImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
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IDirectMusicInstrumentImpl* dminst;
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dminst = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicInstrumentImpl));
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if (NULL == dminst) {
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*ppobj = NULL;
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return E_OUTOFMEMORY;
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}
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dminst->UnknownVtbl = &DirectMusicInstrument_Unknown_Vtbl;
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dminst->InstrumentVtbl = &DirectMusicInstrument_Instrument_Vtbl;
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dminst->ref = 0; /* will be inited by QueryInterface */
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return IDirectMusicInstrumentImpl_IUnknown_QueryInterface ((LPUNKNOWN)&dminst->UnknownVtbl, lpcGUID, ppobj);
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}
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static HRESULT read_from_stream(IStream *stream, void *data, ULONG size)
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{
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ULONG readed;
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HRESULT hr;
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hr = IStream_Read(stream, data, size, &readed);
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if(FAILED(hr)){
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TRACE("IStream_Read failed: %08x\n", hr);
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return hr;
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}
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if(readed < size){
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TRACE("Didn't read full chunk: %u < %u\n", readed, size);
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return E_FAIL;
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}
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return S_OK;
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}
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static inline DWORD subtract_bytes(DWORD len, DWORD bytes)
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{
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if(bytes > len){
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TRACE("Apparent mismatch in chunk lengths? %u bytes remaining, %u bytes read\n", len, bytes);
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return 0;
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}
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return len - bytes;
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}
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static HRESULT load_instrument(IDirectMusicInstrumentImpl *This, IStream *stream, DWORD length)
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{
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HRESULT hr;
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FOURCC fourcc;
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DWORD bytes;
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LARGE_INTEGER move;
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while(length){
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hr = read_from_stream(stream, &fourcc, sizeof(fourcc));
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if(FAILED(hr))
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return hr;
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hr = read_from_stream(stream, &bytes, sizeof(bytes));
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if(FAILED(hr))
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return hr;
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length = subtract_bytes(length, sizeof(fourcc) + sizeof(bytes));
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switch(fourcc){
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case FOURCC_INSH:
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TRACE("INSH chunk: %u bytes\n", bytes);
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hr = read_from_stream(stream, This->pHeader, sizeof(*This->pHeader));
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if(FAILED(hr))
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return hr;
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move.QuadPart = bytes - sizeof(*This->pHeader);
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hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL);
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if(FAILED(hr)){
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WARN("IStream_Seek failed: %08x\n", hr);
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return hr;
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}
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length = subtract_bytes(length, bytes);
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break;
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case FOURCC_DLID:
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TRACE("DLID chunk: %u bytes\n", bytes);
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hr = read_from_stream(stream, This->pInstrumentID, sizeof(*This->pInstrumentID));
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if(FAILED(hr))
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return hr;
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move.QuadPart = bytes - sizeof(*This->pInstrumentID);
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hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL);
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if(FAILED(hr)){
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WARN("IStream_Seek failed: %08x\n", hr);
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return hr;
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}
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length = subtract_bytes(length, bytes);
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break;
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default:
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(fourcc), bytes);
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move.QuadPart = bytes;
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hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL);
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if(FAILED(hr)){
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WARN("IStream_Seek failed: %08x\n", hr);
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return hr;
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}
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length = subtract_bytes(length, bytes);
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break;
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}
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}
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return S_OK;
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}
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/* aux. function that completely loads instrument; my tests indicate that it's
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called somewhere around IDirectMusicCollection_GetInstrument */
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HRESULT IDirectMusicInstrumentImpl_Custom_Load (LPDIRECTMUSICINSTRUMENT iface, LPSTREAM stream)
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{
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ICOM_THIS_MULTI(IDirectMusicInstrumentImpl, InstrumentVtbl, iface);
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LARGE_INTEGER move;
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FOURCC fourcc;
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DWORD bytes;
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HRESULT hr;
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TRACE("(%p, %p, offset = %s)\n", This, stream, wine_dbgstr_longlong(This->liInstrumentPosition.QuadPart));
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hr = IStream_Seek(stream, This->liInstrumentPosition, STREAM_SEEK_SET, NULL);
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if(FAILED(hr)){
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WARN("IStream_Seek failed: %08x\n", hr);
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goto load_failure;
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}
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hr = read_from_stream(stream, &fourcc, sizeof(fourcc));
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if(FAILED(hr))
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goto load_failure;
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if(fourcc != FOURCC_LIST){
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WARN("Loading failed: Expected LIST chunk, got: %s\n", debugstr_fourcc(fourcc));
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goto load_failure;
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}
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hr = read_from_stream(stream, &bytes, sizeof(bytes));
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if(FAILED(hr))
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goto load_failure;
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TRACE("LIST chunk: %u bytes\n", bytes);
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while(1){
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hr = read_from_stream(stream, &fourcc, sizeof(fourcc));
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if(FAILED(hr))
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goto load_failure;
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switch(fourcc){
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case FOURCC_INS:
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TRACE("INS chunk: (no byte count)\n");
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hr = load_instrument(This, stream, bytes - sizeof(FOURCC));
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if(FAILED(hr))
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goto load_failure;
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break;
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default:
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hr = read_from_stream(stream, &bytes, sizeof(bytes));
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if(FAILED(hr))
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goto load_failure;
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(fourcc), bytes);
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move.QuadPart = bytes;
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hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL);
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if(FAILED(hr)){
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WARN("IStream_Seek failed: %08x\n", hr);
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return hr;
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}
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break;
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}
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}
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return S_OK;
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load_failure:
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return DMUS_E_UNSUPPORTED_STREAM;
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}
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