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Sweden-Number/dlls/dmusic/instrument.c

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