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375 lines
12 KiB
C
375 lines
12 KiB
C
/*
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* 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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/* IDirectMusicInstrument IUnknown part: */
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static HRESULT WINAPI IDirectMusicInstrumentImpl_QueryInterface(LPDIRECTMUSICINSTRUMENT iface, REFIID riid, LPVOID *ret_iface)
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{
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TRACE("(%p)->(%s, %p)\n", iface, debugstr_dmguid(riid), ret_iface);
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if (IsEqualIID(riid, &IID_IUnknown) ||
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IsEqualIID(riid, &IID_IDirectMusicInstrument))
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{
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*ret_iface = iface;
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IDirectMusicInstrument_AddRef(iface);
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return S_OK;
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}
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else if (IsEqualIID(riid, &IID_IDirectMusicInstrumentPRIVATE))
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{
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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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*/
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FIXME("*sigh*... requested private/unspecified interface\n");
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*ret_iface = iface;
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IDirectMusicInstrument_AddRef(iface);
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return S_OK;
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}
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WARN("(%p)->(%s, %p): not found\n", iface, debugstr_dmguid(riid), ret_iface);
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return E_NOINTERFACE;
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_AddRef(LPDIRECTMUSICINSTRUMENT iface)
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{
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IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface);
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ULONG ref = InterlockedIncrement(&This->ref);
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TRACE("(%p)->(): new ref = %u\n", iface, ref);
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DMUSIC_LockModule();
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return ref;
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}
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static ULONG WINAPI IDirectMusicInstrumentImpl_Release(LPDIRECTMUSICINSTRUMENT iface)
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{
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IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface);
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ULONG ref = InterlockedDecrement(&This->ref);
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TRACE("(%p)->(): new ref = %u\n", iface, ref);
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if (!ref)
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{
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HeapFree(GetProcessHeap(), 0, This->regions);
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HeapFree(GetProcessHeap(), 0, This);
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}
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DMUSIC_UnlockModule();
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return ref;
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}
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/* IDirectMusicInstrumentImpl IDirectMusicInstrument part: */
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static HRESULT WINAPI IDirectMusicInstrumentImpl_GetPatch(LPDIRECTMUSICINSTRUMENT iface, DWORD* pdwPatch)
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{
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IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface);
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TRACE("(%p)->(%p)\n", This, pdwPatch);
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*pdwPatch = MIDILOCALE2Patch(&This->header.Locale);
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return S_OK;
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}
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static HRESULT WINAPI IDirectMusicInstrumentImpl_SetPatch(LPDIRECTMUSICINSTRUMENT iface, DWORD dwPatch)
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{
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IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface);
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TRACE("(%p)->(%d): stub\n", This, dwPatch);
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Patch2MIDILOCALE(dwPatch, &This->header.Locale);
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return S_OK;
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}
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static const IDirectMusicInstrumentVtbl DirectMusicInstrument_Vtbl =
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{
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IDirectMusicInstrumentImpl_QueryInterface,
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IDirectMusicInstrumentImpl_AddRef,
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IDirectMusicInstrumentImpl_Release,
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IDirectMusicInstrumentImpl_GetPatch,
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IDirectMusicInstrumentImpl_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->IDirectMusicInstrument_iface.lpVtbl = &DirectMusicInstrument_Vtbl;
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dminst->ref = 0; /* will be inited by QueryInterface */
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return IDirectMusicInstrument_QueryInterface(&dminst->IDirectMusicInstrument_iface, 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 bytes_read;
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HRESULT hr;
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hr = IStream_Read(stream, data, size, &bytes_read);
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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 (bytes_read < size) {
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TRACE("Didn't read full chunk: %u < %u\n", bytes_read, 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 inline HRESULT advance_stream(IStream *stream, ULONG bytes)
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{
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LARGE_INTEGER move;
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HRESULT ret;
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move.QuadPart = bytes;
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ret = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL);
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if (FAILED(ret))
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WARN("IStream_Seek failed: %08x\n", ret);
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return ret;
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}
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static HRESULT load_region(IDirectMusicInstrumentImpl *This, IStream *stream, instrument_region *region, ULONG length)
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{
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HRESULT ret;
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DMUS_PRIVATE_CHUNK chunk;
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TRACE("(%p, %p, %p, %u)\n", This, stream, region, length);
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while (length)
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{
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ret = read_from_stream(stream, &chunk, sizeof(chunk));
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, sizeof(chunk));
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switch (chunk.fccID)
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{
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case FOURCC_RGNH:
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TRACE("RGNH chunk (region header): %u bytes\n", chunk.dwSize);
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ret = read_from_stream(stream, ®ion->header, sizeof(region->header));
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, sizeof(region->header));
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break;
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case FOURCC_WSMP:
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TRACE("WSMP chunk (wave sample): %u bytes\n", chunk.dwSize);
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ret = read_from_stream(stream, ®ion->wave_sample, sizeof(region->wave_sample));
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, sizeof(region->wave_sample));
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if (!(region->loop_present = (chunk.dwSize != sizeof(region->wave_sample))))
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break;
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ret = read_from_stream(stream, ®ion->wave_loop, sizeof(region->wave_loop));
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, sizeof(region->wave_loop));
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break;
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case FOURCC_WLNK:
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TRACE("WLNK chunk (wave link): %u bytes\n", chunk.dwSize);
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ret = read_from_stream(stream, ®ion->wave_link, sizeof(region->wave_link));
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, sizeof(region->wave_link));
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break;
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default:
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TRACE("Unknown chunk %s (skipping): %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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ret = advance_stream(stream, chunk.dwSize);
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if (FAILED(ret))
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return ret;
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length = subtract_bytes(length, chunk.dwSize);
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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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/* Function that loads all instrument data and which is called from IDirectMusicCollection_GetInstrument as in native */
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HRESULT IDirectMusicInstrumentImpl_CustomLoad(IDirectMusicInstrument *iface, IStream *stream)
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{
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IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface);
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HRESULT hr;
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DMUS_PRIVATE_CHUNK chunk;
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ULONG i = 0;
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ULONG length = This->length;
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TRACE("(%p, %p): offset = 0x%s, length = %u)\n", This, stream, wine_dbgstr_longlong(This->liInstrumentPosition.QuadPart), This->length);
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if (This->loaded)
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return S_OK;
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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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{
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WARN("IStream_Seek failed: %08x\n", hr);
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return DMUS_E_UNSUPPORTED_STREAM;
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}
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This->regions = HeapAlloc(GetProcessHeap(), 0, sizeof(*This->regions) * This->header.cRegions);
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if (!This->regions)
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return E_OUTOFMEMORY;
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while (length)
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{
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hr = read_from_stream(stream, &chunk, sizeof(chunk));
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if (FAILED(hr))
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goto error;
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length = subtract_bytes(length, sizeof(chunk) + chunk.dwSize);
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switch (chunk.fccID)
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{
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case FOURCC_INSH:
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case FOURCC_DLID:
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TRACE("Chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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/* Instrument header and id are already set so just skip */
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hr = advance_stream(stream, chunk.dwSize);
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if (FAILED(hr))
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goto error;
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break;
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case FOURCC_LIST: {
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DWORD size = chunk.dwSize;
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TRACE("LIST chunk: %u bytes\n", chunk.dwSize);
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hr = read_from_stream(stream, &chunk.fccID, sizeof(chunk.fccID));
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if (FAILED(hr))
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goto error;
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size = subtract_bytes(size, sizeof(chunk.fccID));
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switch (chunk.fccID)
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{
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case FOURCC_LRGN:
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TRACE("LRGN chunk (regions list): %u bytes\n", size);
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while (size)
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{
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hr = read_from_stream(stream, &chunk, sizeof(chunk));
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if (FAILED(hr))
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goto error;
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if (chunk.fccID != FOURCC_LIST)
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{
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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goto error;
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}
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hr = read_from_stream(stream, &chunk.fccID, sizeof(chunk.fccID));
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if (FAILED(hr))
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goto error;
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if (chunk.fccID == FOURCC_RGN)
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{
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TRACE("RGN chunk (region list): %u bytes\n", chunk.dwSize);
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hr = load_region(This, stream, &This->regions[i++], chunk.dwSize - sizeof(chunk.fccID));
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}
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else
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{
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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hr = advance_stream(stream, chunk.dwSize - sizeof(chunk.fccID));
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}
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if (FAILED(hr))
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goto error;
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size = subtract_bytes(size, chunk.dwSize + sizeof(chunk));
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}
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break;
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default:
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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hr = advance_stream(stream, chunk.dwSize - sizeof(chunk.fccID));
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if (FAILED(hr))
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goto error;
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size = subtract_bytes(size, chunk.dwSize - sizeof(chunk.fccID));
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break;
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}
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break;
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}
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default:
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TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize);
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hr = advance_stream(stream, chunk.dwSize);
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if (FAILED(hr))
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goto error;
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break;
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}
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}
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This->loaded = TRUE;
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return S_OK;
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error:
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HeapFree(GetProcessHeap(), 0, This->regions);
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This->regions = NULL;
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return DMUS_E_UNSUPPORTED_STREAM;
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}
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