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wine/dlls/avifil32/wavfile.c
Paul Vriens c905d691c8 - use Interlocked* functions in AddRef and Release. 
- store the result of the Interlocked functions and use only this.
2005-01-14 15:10:52 +00:00

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/*
* Copyright 2002 Michael Günnewig
*
* This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#define COM_NO_WINDOWS_H
#include <assert.h>
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "winerror.h"
#include "windowsx.h"
#include "mmsystem.h"
#include "vfw.h"
#include "msacm.h"
#include "avifile_private.h"
#include "extrachunk.h"
#include "wine/unicode.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(avifile);
/***********************************************************************/
#define formtypeWAVE mmioFOURCC('W','A','V','E')
#define ckidWAVEFORMAT mmioFOURCC('f','m','t',' ')
#define ckidWAVEFACT mmioFOURCC('f','a','c','t')
#define ckidWAVEDATA mmioFOURCC('d','a','t','a')
/***********************************************************************/
#define ENDIAN_SWAPWORD(x) ((((x) >> 8) & 0xFF) | (((x) & 0xFF) << 8))
#define ENDIAN_SWAPDWORD(x) (ENDIAN_SWAPWORD((x >> 16) & 0xFFFF) | \
ENDIAN_SWAPWORD(x & 0xFFFF) << 16)
#ifdef WORDS_BIGENDIAN
#define BE2H_WORD(x) (x)
#define BE2H_DWORD(x) (x)
#define LE2H_WORD(x) ENDIAN_SWAPWORD(x)
#define LE2H_DWORD(x) ENDIAN_SWAPDWORD(x)
#else
#define BE2H_WORD(x) ENDIAN_SWAPWORD(x)
#define BE2H_DWORD(x) ENDIAN_SWAPDWORD(x)
#define LE2H_WORD(x) (x)
#define LE2H_DWORD(x) (x)
#endif
typedef struct {
FOURCC fccType;
DWORD offset;
DWORD size;
INT encoding;
DWORD sampleRate;
DWORD channels;
} SUNAUDIOHEADER;
#define AU_ENCODING_ULAW_8 1
#define AU_ENCODING_PCM_8 2
#define AU_ENCODING_PCM_16 3
#define AU_ENCODING_PCM_24 4
#define AU_ENCODING_PCM_32 5
#define AU_ENCODING_FLOAT 6
#define AU_ENCODING_DOUBLE 7
#define AU_ENCODING_ADPCM_G721_32 23
#define AU_ENCODING_ADPCM_G722 24
#define AU_ENCODING_ADPCM_G723_24 25
#define AU_ENCODING_ADPCM_G723_5 26
#define AU_ENCODING_ALAW_8 27
/***********************************************************************/
static HRESULT WINAPI IAVIFile_fnQueryInterface(IAVIFile* iface,REFIID refiid,LPVOID *obj);
static ULONG WINAPI IAVIFile_fnAddRef(IAVIFile* iface);
static ULONG WINAPI IAVIFile_fnRelease(IAVIFile* iface);
static HRESULT WINAPI IAVIFile_fnInfo(IAVIFile*iface,AVIFILEINFOW*afi,LONG size);
static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile*iface,PAVISTREAM*avis,DWORD fccType,LONG lParam);
static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile*iface,PAVISTREAM*avis,AVISTREAMINFOW*asi);
static HRESULT WINAPI IAVIFile_fnWriteData(IAVIFile*iface,DWORD ckid,LPVOID lpData,LONG size);
static HRESULT WINAPI IAVIFile_fnReadData(IAVIFile*iface,DWORD ckid,LPVOID lpData,LONG *size);
static HRESULT WINAPI IAVIFile_fnEndRecord(IAVIFile*iface);
static HRESULT WINAPI IAVIFile_fnDeleteStream(IAVIFile*iface,DWORD fccType,LONG lParam);
struct IAVIFileVtbl iwavft = {
IAVIFile_fnQueryInterface,
IAVIFile_fnAddRef,
IAVIFile_fnRelease,
IAVIFile_fnInfo,
IAVIFile_fnGetStream,
IAVIFile_fnCreateStream,
IAVIFile_fnWriteData,
IAVIFile_fnReadData,
IAVIFile_fnEndRecord,
IAVIFile_fnDeleteStream
};
static HRESULT WINAPI IPersistFile_fnQueryInterface(IPersistFile*iface,REFIID refiid,LPVOID*obj);
static ULONG WINAPI IPersistFile_fnAddRef(IPersistFile*iface);
static ULONG WINAPI IPersistFile_fnRelease(IPersistFile*iface);
static HRESULT WINAPI IPersistFile_fnGetClassID(IPersistFile*iface,CLSID*pClassID);
static HRESULT WINAPI IPersistFile_fnIsDirty(IPersistFile*iface);
static HRESULT WINAPI IPersistFile_fnLoad(IPersistFile*iface,LPCOLESTR pszFileName,DWORD dwMode);
static HRESULT WINAPI IPersistFile_fnSave(IPersistFile*iface,LPCOLESTR pszFileName,BOOL fRemember);
static HRESULT WINAPI IPersistFile_fnSaveCompleted(IPersistFile*iface,LPCOLESTR pszFileName);
static HRESULT WINAPI IPersistFile_fnGetCurFile(IPersistFile*iface,LPOLESTR*ppszFileName);
struct IPersistFileVtbl iwavpft = {
IPersistFile_fnQueryInterface,
IPersistFile_fnAddRef,
IPersistFile_fnRelease,
IPersistFile_fnGetClassID,
IPersistFile_fnIsDirty,
IPersistFile_fnLoad,
IPersistFile_fnSave,
IPersistFile_fnSaveCompleted,
IPersistFile_fnGetCurFile
};
static HRESULT WINAPI IAVIStream_fnQueryInterface(IAVIStream*iface,REFIID refiid,LPVOID *obj);
static ULONG WINAPI IAVIStream_fnAddRef(IAVIStream*iface);
static ULONG WINAPI IAVIStream_fnRelease(IAVIStream* iface);
static HRESULT WINAPI IAVIStream_fnCreate(IAVIStream*iface,LPARAM lParam1,LPARAM lParam2);
static HRESULT WINAPI IAVIStream_fnInfo(IAVIStream*iface,AVISTREAMINFOW *psi,LONG size);
static LONG WINAPI IAVIStream_fnFindSample(IAVIStream*iface,LONG pos,LONG flags);
static HRESULT WINAPI IAVIStream_fnReadFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG *formatsize);
static HRESULT WINAPI IAVIStream_fnSetFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG formatsize);
static HRESULT WINAPI IAVIStream_fnRead(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,LONG *bytesread,LONG *samplesread);
static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,DWORD flags,LONG *sampwritten,LONG *byteswritten);
static HRESULT WINAPI IAVIStream_fnDelete(IAVIStream*iface,LONG start,LONG samples);
static HRESULT WINAPI IAVIStream_fnReadData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG *lpread);
static HRESULT WINAPI IAVIStream_fnWriteData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG size);
static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream*iface,AVISTREAMINFOW*info,LONG infolen);
struct IAVIStreamVtbl iwavst = {
IAVIStream_fnQueryInterface,
IAVIStream_fnAddRef,
IAVIStream_fnRelease,
IAVIStream_fnCreate,
IAVIStream_fnInfo,
IAVIStream_fnFindSample,
IAVIStream_fnReadFormat,
IAVIStream_fnSetFormat,
IAVIStream_fnRead,
IAVIStream_fnWrite,
IAVIStream_fnDelete,
IAVIStream_fnReadData,
IAVIStream_fnWriteData,
IAVIStream_fnSetInfo
};
typedef struct _IAVIFileImpl IAVIFileImpl;
typedef struct _IPersistFileImpl {
/* IUnknown stuff */
IPersistFileVtbl *lpVtbl;
/* IPersistFile stuff */
IAVIFileImpl *paf;
} IPersistFileImpl;
typedef struct _IAVIStreamImpl {
/* IUnknown stuff */
IAVIStreamVtbl *lpVtbl;
/* IAVIStream stuff */
IAVIFileImpl *paf;
} IAVIStreamImpl;
struct _IAVIFileImpl {
/* IUnknown stuff */
IAVIFileVtbl *lpVtbl;
DWORD ref;
/* IAVIFile, IAVIStream stuff... */
IPersistFileImpl iPersistFile;
IAVIStreamImpl iAVIStream;
AVIFILEINFOW fInfo;
AVISTREAMINFOW sInfo;
LPWAVEFORMATEX lpFormat;
LONG cbFormat;
MMCKINFO ckData;
EXTRACHUNKS extra;
/* IPersistFile stuff ... */
HMMIO hmmio;
LPWSTR szFileName;
UINT uMode;
BOOL fDirty;
};
/***********************************************************************/
static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This);
static HRESULT AVIFILE_LoadSunFile(IAVIFileImpl *This);
static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This);
HRESULT AVIFILE_CreateWAVFile(REFIID riid, LPVOID *ppv)
{
IAVIFileImpl *pfile;
HRESULT hr;
assert(riid != NULL && ppv != NULL);
*ppv = NULL;
pfile = (IAVIFileImpl*)LocalAlloc(LPTR, sizeof(IAVIFileImpl));
if (pfile == NULL)
return AVIERR_MEMORY;
pfile->lpVtbl = &iwavft;
pfile->iPersistFile.lpVtbl = &iwavpft;
pfile->iAVIStream.lpVtbl = &iwavst;
pfile->ref = 0;
pfile->iPersistFile.paf = pfile;
pfile->iAVIStream.paf = pfile;
hr = IAVIFile_QueryInterface((IAVIFile*)pfile, riid, ppv);
if (FAILED(hr))
LocalFree((HLOCAL)pfile);
return hr;
}
static HRESULT WINAPI IAVIFile_fnQueryInterface(IAVIFile *iface, REFIID refiid,
LPVOID *obj)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,%s,%p)\n", This, debugstr_guid(refiid), obj);
if (IsEqualGUID(&IID_IUnknown, refiid) ||
IsEqualGUID(&IID_IAVIFile, refiid)) {
*obj = iface;
return S_OK;
} else if (This->fInfo.dwStreams == 1 &&
IsEqualGUID(&IID_IAVIStream, refiid)) {
*obj = &This->iAVIStream;
return S_OK;
} else if (IsEqualGUID(&IID_IPersistFile, refiid)) {
*obj = &This->iPersistFile;
return S_OK;
}
return OLE_E_ENUM_NOMORE;
}
static ULONG WINAPI IAVIFile_fnAddRef(IAVIFile *iface)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p)\n",iface);
return InterlockedIncrement(&This->ref);
}
static ULONG WINAPI IAVIFile_fnRelease(IAVIFile *iface)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
ULONG ref = InterlockedDecrement(&This->ref);
TRACE("(%p)\n",iface);
if (!ref) {
if (This->fDirty) {
/* need to write headers to file */
AVIFILE_SaveFile(This);
}
if (This->lpFormat != NULL) {
GlobalFreePtr(This->lpFormat);
This->lpFormat = NULL;
This->cbFormat = 0;
}
if (This->extra.lp != NULL) {
GlobalFreePtr(This->extra.lp);
This->extra.lp = NULL;
This->extra.cb = 0;
}
if (This->szFileName != NULL) {
LocalFree((HLOCAL)This->szFileName);
This->szFileName = NULL;
}
if (This->hmmio != NULL) {
mmioClose(This->hmmio, 0);
This->hmmio = NULL;
}
LocalFree((HLOCAL)This);
return 0;
}
return ref;
}
static HRESULT WINAPI IAVIFile_fnInfo(IAVIFile *iface, LPAVIFILEINFOW afi,
LONG size)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,%p,%ld)\n",iface,afi,size);
if (afi == NULL)
return AVIERR_BADPARAM;
if (size < 0)
return AVIERR_BADSIZE;
/* update file info */
This->fInfo.dwFlags = 0;
This->fInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
if (This->lpFormat != NULL) {
assert(This->sInfo.dwScale != 0);
This->fInfo.dwStreams = 1;
This->fInfo.dwScale = This->sInfo.dwScale;
This->fInfo.dwRate = This->sInfo.dwRate;
This->fInfo.dwLength = This->sInfo.dwLength;
This->fInfo.dwSuggestedBufferSize = This->ckData.cksize;
This->fInfo.dwMaxBytesPerSec =
MulDiv(This->sInfo.dwSampleSize,This->sInfo.dwRate,This->sInfo.dwScale);
}
memcpy(afi, &This->fInfo, min((DWORD)size, sizeof(This->fInfo)));
if ((DWORD)size < sizeof(This->fInfo))
return AVIERR_BUFFERTOOSMALL;
return AVIERR_OK;
}
static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile *iface, PAVISTREAM *avis,
DWORD fccType, LONG lParam)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,%p,0x%08lX,%ld)\n", iface, avis, fccType, lParam);
/* check parameter */
if (avis == NULL)
return AVIERR_BADPARAM;
*avis = NULL;
/* Does our stream exists? */
if (lParam != 0 || This->fInfo.dwStreams == 0)
return AVIERR_NODATA;
if (fccType != 0 && fccType != streamtypeAUDIO)
return AVIERR_NODATA;
*avis = (PAVISTREAM)&This->iAVIStream;
IAVIFile_AddRef(iface);
return AVIERR_OK;
}
static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile *iface,PAVISTREAM *avis,
LPAVISTREAMINFOW asi)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,%p,%p)\n", iface, avis, asi);
/* check parameters */
if (avis == NULL || asi == NULL)
return AVIERR_BADPARAM;
*avis = NULL;
/* We only support one audio stream */
if (This->fInfo.dwStreams != 0 || This->lpFormat != NULL)
return AVIERR_UNSUPPORTED;
if (asi->fccType != streamtypeAUDIO)
return AVIERR_UNSUPPORTED;
/* Does the user have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
This->cbFormat = 0;
This->lpFormat = NULL;
memcpy(&This->sInfo, asi, sizeof(This->sInfo));
/* make sure streaminfo if okay for us */
This->sInfo.fccHandler = 0;
This->sInfo.dwFlags = 0;
This->sInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
This->sInfo.dwStart = 0;
This->sInfo.dwInitialFrames = 0;
This->sInfo.dwFormatChangeCount = 0;
memset(&This->sInfo.rcFrame, 0, sizeof(This->sInfo.rcFrame));
This->fInfo.dwStreams = 1;
This->fInfo.dwScale = This->sInfo.dwScale;
This->fInfo.dwRate = This->sInfo.dwRate;
This->fInfo.dwLength = This->sInfo.dwLength;
This->ckData.dwDataOffset = 0;
This->ckData.cksize = 0;
*avis = (PAVISTREAM)&This->iAVIStream;
IAVIFile_AddRef(iface);
return AVIERR_OK;
}
static HRESULT WINAPI IAVIFile_fnWriteData(IAVIFile *iface, DWORD ckid,
LPVOID lpData, LONG size)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,0x%08lX,%p,%ld)\n", iface, ckid, lpData, size);
/* check parameters */
if (lpData == NULL)
return AVIERR_BADPARAM;
if (size < 0)
return AVIERR_BADSIZE;
/* Do we have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
This->fDirty = TRUE;
return WriteExtraChunk(&This->extra, ckid, lpData, size);
}
static HRESULT WINAPI IAVIFile_fnReadData(IAVIFile *iface, DWORD ckid,
LPVOID lpData, LONG *size)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,0x%08lX,%p,%p)\n", iface, ckid, lpData, size);
return ReadExtraChunk(&This->extra, ckid, lpData, size);
}
static HRESULT WINAPI IAVIFile_fnEndRecord(IAVIFile *iface)
{
TRACE("(%p)\n",iface);
/* This is only needed for interleaved files.
* We have only one stream, which can't be interleaved.
*/
return AVIERR_OK;
}
static HRESULT WINAPI IAVIFile_fnDeleteStream(IAVIFile *iface, DWORD fccType,
LONG lParam)
{
IAVIFileImpl *This = (IAVIFileImpl *)iface;
TRACE("(%p,0x%08lX,%ld)\n", iface, fccType, lParam);
/* check parameter */
if (lParam < 0)
return AVIERR_BADPARAM;
/* Do we have our audio stream? */
if (lParam != 0 || This->fInfo.dwStreams == 0 ||
(fccType != 0 && fccType != streamtypeAUDIO))
return AVIERR_NODATA;
/* Have user write permissions? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
GlobalFreePtr(This->lpFormat);
This->lpFormat = NULL;
This->cbFormat = 0;
/* update infos */
This->ckData.dwDataOffset = 0;
This->ckData.cksize = 0;
This->sInfo.dwScale = 0;
This->sInfo.dwRate = 0;
This->sInfo.dwLength = 0;
This->sInfo.dwSuggestedBufferSize = 0;
This->fInfo.dwStreams = 0;
This->fInfo.dwEditCount++;
This->fDirty = TRUE;
return AVIERR_OK;
}
/***********************************************************************/
static HRESULT WINAPI IPersistFile_fnQueryInterface(IPersistFile *iface,
REFIID refiid, LPVOID *obj)
{
IPersistFileImpl *This = (IPersistFileImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_QueryInterface((PAVIFILE)This->paf, refiid, obj);
}
static ULONG WINAPI IPersistFile_fnAddRef(IPersistFile *iface)
{
IPersistFileImpl *This = (IPersistFileImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_AddRef((PAVIFILE)This->paf);
}
static ULONG WINAPI IPersistFile_fnRelease(IPersistFile *iface)
{
IPersistFileImpl *This = (IPersistFileImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_Release((PAVIFILE)This->paf);
}
static HRESULT WINAPI IPersistFile_fnGetClassID(IPersistFile *iface,
LPCLSID pClassID)
{
TRACE("(%p,%p)\n", iface, pClassID);
if (pClassID == NULL)
return AVIERR_BADPARAM;
memcpy(pClassID, &CLSID_WAVFile, sizeof(CLSID_WAVFile));
return AVIERR_OK;
}
static HRESULT WINAPI IPersistFile_fnIsDirty(IPersistFile *iface)
{
IPersistFileImpl *This = (IPersistFileImpl *)iface;
TRACE("(%p)\n", iface);
assert(This->paf != NULL);
return (This->paf->fDirty ? S_OK : S_FALSE);
}
static HRESULT WINAPI IPersistFile_fnLoad(IPersistFile *iface,
LPCOLESTR pszFileName, DWORD dwMode)
{
IAVIFileImpl *This = ((IPersistFileImpl*)iface)->paf;
WCHAR wszStreamFmt[50];
INT len;
TRACE("(%p,%s,0x%08lX)\n", iface, debugstr_w(pszFileName), dwMode);
/* check parameter */
if (pszFileName == NULL)
return AVIERR_BADPARAM;
assert(This != NULL);
if (This->hmmio != NULL)
return AVIERR_ERROR; /* No reuse of this object for another file! */
/* remeber mode and name */
This->uMode = dwMode;
len = lstrlenW(pszFileName) + 1;
This->szFileName = LocalAlloc(LPTR, len * sizeof(WCHAR));
if (This->szFileName == NULL)
return AVIERR_MEMORY;
lstrcpyW(This->szFileName, pszFileName);
/* try to open the file */
This->hmmio = mmioOpenW(This->szFileName, NULL, MMIO_ALLOCBUF | dwMode);
if (This->hmmio == NULL) {
/* mmioOpenW not in native DLLs of Win9x -- try mmioOpenA */
LPSTR szFileName;
len = WideCharToMultiByte(CP_ACP, 0, This->szFileName, -1,
NULL, 0, NULL, NULL);
szFileName = LocalAlloc(LPTR, len * sizeof(CHAR));
if (szFileName == NULL)
return AVIERR_MEMORY;
WideCharToMultiByte(CP_ACP, 0, This->szFileName, -1, szFileName,
len, NULL, NULL);
This->hmmio = mmioOpenA(szFileName, NULL, MMIO_ALLOCBUF | dwMode);
LocalFree((HLOCAL)szFileName);
if (This->hmmio == NULL)
return AVIERR_FILEOPEN;
}
memset(& This->fInfo, 0, sizeof(This->fInfo));
memset(& This->sInfo, 0, sizeof(This->sInfo));
LoadStringW(AVIFILE_hModule, IDS_WAVEFILETYPE, This->fInfo.szFileType,
sizeof(This->fInfo.szFileType));
if (LoadStringW(AVIFILE_hModule, IDS_WAVESTREAMFORMAT,
wszStreamFmt, sizeof(wszStreamFmt)) > 0) {
wsprintfW(This->sInfo.szName, wszStreamFmt,
AVIFILE_BasenameW(This->szFileName));
}
/* should we create a new file? */
if (dwMode & OF_CREATE) {
/* nothing more to do */
return AVIERR_OK;
} else
return AVIFILE_LoadFile(This);
}
static HRESULT WINAPI IPersistFile_fnSave(IPersistFile *iface,
LPCOLESTR pszFileName,BOOL fRemember)
{
TRACE("(%p,%s,%d)\n", iface, debugstr_w(pszFileName), fRemember);
/* We write directly to disk, so nothing to do. */
return AVIERR_OK;
}
static HRESULT WINAPI IPersistFile_fnSaveCompleted(IPersistFile *iface,
LPCOLESTR pszFileName)
{
TRACE("(%p,%s)\n", iface, debugstr_w(pszFileName));
/* We write directly to disk, so nothing to do. */
return AVIERR_OK;
}
static HRESULT WINAPI IPersistFile_fnGetCurFile(IPersistFile *iface,
LPOLESTR *ppszFileName)
{
IPersistFileImpl *This = (IPersistFileImpl *)iface;
TRACE("(%p,%p)\n", iface, ppszFileName);
if (ppszFileName == NULL)
return AVIERR_BADPARAM;
*ppszFileName = NULL;
assert(This->paf != NULL);
if (This->paf->szFileName != NULL) {
int len = lstrlenW(This->paf->szFileName) + 1;
*ppszFileName = GlobalAllocPtr(GHND, len * sizeof(WCHAR));
if (*ppszFileName == NULL)
return AVIERR_MEMORY;
strcpyW(*ppszFileName, This->paf->szFileName);
}
return AVIERR_OK;
}
/***********************************************************************/
static HRESULT WINAPI IAVIStream_fnQueryInterface(IAVIStream *iface,
REFIID refiid, LPVOID *obj)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_QueryInterface((PAVIFILE)This->paf, refiid, obj);
}
static ULONG WINAPI IAVIStream_fnAddRef(IAVIStream *iface)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_AddRef((PAVIFILE)This->paf);
}
static ULONG WINAPI IAVIStream_fnRelease(IAVIStream* iface)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_Release((PAVIFILE)This->paf);
}
static HRESULT WINAPI IAVIStream_fnCreate(IAVIStream *iface, LPARAM lParam1,
LPARAM lParam2)
{
TRACE("(%p,0x%08lX,0x%08lX)\n", iface, lParam1, lParam2);
/* This IAVIStream interface needs an WAVFile */
return AVIERR_UNSUPPORTED;
}
static HRESULT WINAPI IAVIStream_fnInfo(IAVIStream *iface,LPAVISTREAMINFOW psi,
LONG size)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
TRACE("(%p,%p,%ld)\n", iface, psi, size);
if (psi == NULL)
return AVIERR_BADPARAM;
if (size < 0)
return AVIERR_BADSIZE;
memcpy(psi, &This->paf->sInfo, min((DWORD)size, sizeof(This->paf->sInfo)));
if ((DWORD)size < sizeof(This->paf->sInfo))
return AVIERR_BUFFERTOOSMALL;
return AVIERR_OK;
}
static LONG WINAPI IAVIStream_fnFindSample(IAVIStream *iface, LONG pos,
LONG flags)
{
IAVIFileImpl *This = ((IAVIStreamImpl*)iface)->paf;
TRACE("(%p,%ld,0x%08lX)\n",iface,pos,flags);
/* Do we have data? */
if (This->lpFormat == NULL)
return -1;
/* We don't have an index */
if (flags & FIND_INDEX)
return -1;
if (flags & FIND_FROM_START) {
pos = This->sInfo.dwStart;
flags &= ~(FIND_FROM_START|FIND_PREV);
flags |= FIND_NEXT;
}
if (flags & FIND_FORMAT) {
if ((flags & FIND_NEXT) && pos > 0)
pos = -1;
else
pos = 0;
}
if ((flags & FIND_RET) == FIND_LENGTH ||
(flags & FIND_RET) == FIND_SIZE)
return This->sInfo.dwSampleSize;
if ((flags & FIND_RET) == FIND_OFFSET)
return This->ckData.dwDataOffset + pos * This->sInfo.dwSampleSize;
return pos;
}
static HRESULT WINAPI IAVIStream_fnReadFormat(IAVIStream *iface, LONG pos,
LPVOID format, LONG *formatsize)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
TRACE("(%p,%ld,%p,%p)\n", iface, pos, format, formatsize);
if (formatsize == NULL)
return AVIERR_BADPARAM;
/* only interested in needed buffersize? */
if (format == NULL || *formatsize <= 0) {
*formatsize = This->paf->cbFormat;
return AVIERR_OK;
}
/* copy initial format (only as much as will fit) */
memcpy(format, This->paf->lpFormat, min(*formatsize, This->paf->cbFormat));
if (*formatsize < This->paf->cbFormat) {
*formatsize = This->paf->cbFormat;
return AVIERR_BUFFERTOOSMALL;
}
*formatsize = This->paf->cbFormat;
return AVIERR_OK;
}
static HRESULT WINAPI IAVIStream_fnSetFormat(IAVIStream *iface, LONG pos,
LPVOID format, LONG formatsize)
{
IAVIFileImpl *This = ((IAVIStreamImpl*)iface)->paf;
TRACE("(%p,%ld,%p,%ld)\n", iface, pos, format, formatsize);
/* check parameters */
if (format == NULL || formatsize <= sizeof(PCMWAVEFORMAT))
return AVIERR_BADPARAM;
/* We can only do this to an empty wave file, but ignore call
* if still same format */
if (This->lpFormat != NULL) {
if (formatsize != This->cbFormat ||
memcmp(format, This->lpFormat, formatsize) != 0)
return AVIERR_UNSUPPORTED;
return AVIERR_OK;
}
/* only support start at position 0 */
if (pos != 0)
return AVIERR_UNSUPPORTED;
/* Do we have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
/* get memory for format and copy it */
This->lpFormat = (LPWAVEFORMATEX)GlobalAllocPtr(GMEM_MOVEABLE, formatsize);
if (This->lpFormat == NULL)
return AVIERR_MEMORY;
This->cbFormat = formatsize;
memcpy(This->lpFormat, format, formatsize);
/* update info's about 'data' chunk */
This->ckData.dwDataOffset = formatsize + 7 * sizeof(DWORD);
This->ckData.cksize = 0;
/* for non-pcm format we need also a 'fact' chunk */
if (This->lpFormat->wFormatTag != WAVE_FORMAT_PCM)
This->ckData.dwDataOffset += 3 * sizeof(DWORD);
/* update stream and file info */
This->sInfo.dwSampleSize = This->lpFormat->nBlockAlign;
This->sInfo.dwScale = This->lpFormat->nBlockAlign;
This->sInfo.dwRate = This->lpFormat->nAvgBytesPerSec;
This->sInfo.dwLength = 0;
This->sInfo.dwSuggestedBufferSize = 0;
return AVIERR_OK;
}
static HRESULT WINAPI IAVIStream_fnRead(IAVIStream *iface, LONG start,
LONG samples, LPVOID buffer,
LONG buffersize, LPLONG bytesread,
LPLONG samplesread)
{
IAVIFileImpl *This = ((IAVIStreamImpl*)iface)->paf;
TRACE("(%p,%ld,%ld,%p,%ld,%p,%p)\n", iface, start, samples, buffer,
buffersize, bytesread, samplesread);
/* clear return parameters if given */
if (bytesread != NULL)
*bytesread = 0;
if (samplesread != NULL)
*samplesread = 0;
/* positions without data */
if (start < 0 || (DWORD)start > This->sInfo.dwLength)
return AVIERR_OK;
/* check samples */
if (samples < 0)
samples = 0;
if (buffersize > 0) {
if (samples > 0)
samples = min((DWORD)samples, buffersize / This->sInfo.dwSampleSize);
else
samples = buffersize / This->sInfo.dwSampleSize;
}
/* limit to end of stream */
if ((DWORD)(start + samples) > This->sInfo.dwLength)
samples = This->sInfo.dwLength - start;
/* request only the sizes? */
if (buffer == NULL || buffersize <= 0) {
/* then I need at least one parameter for it */
if (bytesread == NULL && samplesread == NULL)
return AVIERR_BADPARAM;
if (bytesread != NULL)
*bytesread = samples * This->sInfo.dwSampleSize;
if (samplesread != NULL)
*samplesread = samples;
return AVIERR_OK;
}
/* nothing to read? */
if (samples == 0)
return AVIERR_OK;
/* Can I read at least one sample? */
if ((DWORD)buffersize < This->sInfo.dwSampleSize)
return AVIERR_BUFFERTOOSMALL;
buffersize = samples * This->sInfo.dwSampleSize;
if (mmioSeek(This->hmmio, This->ckData.dwDataOffset
+ start * This->sInfo.dwSampleSize, SEEK_SET) == -1)
return AVIERR_FILEREAD;
if (mmioRead(This->hmmio, (HPSTR)buffer, buffersize) != buffersize)
return AVIERR_FILEREAD;
/* fill out return parameters if given */
if (bytesread != NULL)
*bytesread = buffersize;
if (samplesread != NULL)
*samplesread = samples;
return AVIERR_OK;
}
static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
LONG samples, LPVOID buffer,
LONG buffersize, DWORD flags,
LPLONG sampwritten,
LPLONG byteswritten)
{
IAVIFileImpl *This = ((IAVIStreamImpl*)iface)->paf;
TRACE("(%p,%ld,%ld,%p,%ld,0x%08lX,%p,%p)\n", iface, start, samples,
buffer, buffersize, flags, sampwritten, byteswritten);
/* clear return parameters if given */
if (sampwritten != NULL)
*sampwritten = 0;
if (byteswritten != NULL)
*byteswritten = 0;
/* check parameters */
if (buffer == NULL && (buffersize > 0 || samples > 0))
return AVIERR_BADPARAM;
/* Do we have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
/* < 0 means "append" */
if (start < 0)
start = This->sInfo.dwStart + This->sInfo.dwLength;
/* check buffersize -- must multiple of samplesize */
if (buffersize & ~(This->sInfo.dwSampleSize - 1))
return AVIERR_BADSIZE;
/* do we have anything to write? */
if (buffer != NULL && buffersize > 0) {
This->fDirty = 1;
if (mmioSeek(This->hmmio, This->ckData.dwDataOffset +
start * This->sInfo.dwSampleSize, SEEK_SET) == -1)
return AVIERR_FILEWRITE;
if (mmioWrite(This->hmmio, (HPSTR)buffer, buffersize) != buffersize)
return AVIERR_FILEWRITE;
This->sInfo.dwLength = max(This->sInfo.dwLength, (DWORD)start + samples);
This->ckData.cksize = max(This->ckData.cksize,
start * This->sInfo.dwSampleSize + buffersize);
/* fill out return parameters if given */
if (sampwritten != NULL)
*sampwritten = samples;
if (byteswritten != NULL)
*byteswritten = buffersize;
}
return AVIERR_OK;
}
static HRESULT WINAPI IAVIStream_fnDelete(IAVIStream *iface, LONG start,
LONG samples)
{
IAVIFileImpl *This = ((IAVIStreamImpl*)iface)->paf;
TRACE("(%p,%ld,%ld)\n", iface, start, samples);
/* check parameters */
if (start < 0 || samples < 0)
return AVIERR_BADPARAM;
/* Delete before start of stream? */
if ((DWORD)(start + samples) < This->sInfo.dwStart)
return AVIERR_OK;
/* Delete after end of stream? */
if ((DWORD)start > This->sInfo.dwLength)
return AVIERR_OK;
/* For the rest we need write permissions */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
if ((DWORD)(start + samples) >= This->sInfo.dwLength) {
/* deletion at end */
samples = This->sInfo.dwLength - start;
This->sInfo.dwLength -= samples;
This->ckData.cksize -= samples * This->sInfo.dwSampleSize;
} else if ((DWORD)start <= This->sInfo.dwStart) {
/* deletion at start */
samples = This->sInfo.dwStart - start;
start = This->sInfo.dwStart;
This->ckData.dwDataOffset += samples * This->sInfo.dwSampleSize;
This->ckData.cksize -= samples * This->sInfo.dwSampleSize;
} else {
/* deletion inside stream -- needs playlist and cue's */
FIXME(": deletion inside of stream not supported!\n");
return AVIERR_UNSUPPORTED;
}
This->fDirty = 1;
return AVIERR_OK;
}
static HRESULT WINAPI IAVIStream_fnReadData(IAVIStream *iface, DWORD fcc,
LPVOID lp, LPLONG lpread)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
assert(This->paf != NULL);
return IAVIFile_ReadData((PAVIFILE)This->paf, fcc, lp, lpread);
}
static HRESULT WINAPI IAVIStream_fnWriteData(IAVIStream *iface, DWORD fcc,
LPVOID lp, LONG size)
{
IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
return IAVIFile_WriteData((PAVIFILE)This->paf, fcc, lp, size);
}
static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream *iface,
LPAVISTREAMINFOW info, LONG infolen)
{
FIXME("(%p,%p,%ld): stub\n", iface, info, infolen);
return E_FAIL;
}
/***********************************************************************/
static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
{
MMCKINFO ckRIFF;
MMCKINFO ck;
This->sInfo.dwLength = 0; /* just to be sure */
This->fDirty = FALSE;
/* search for RIFF chunk */
ckRIFF.fccType = 0; /* find any */
if (mmioDescend(This->hmmio, &ckRIFF, NULL, MMIO_FINDRIFF) != S_OK) {
return AVIFILE_LoadSunFile(This);
}
if (ckRIFF.fccType != formtypeWAVE)
return AVIERR_BADFORMAT;
/* search WAVE format chunk */
ck.ckid = ckidWAVEFORMAT;
if (FindChunkAndKeepExtras(&This->extra, This->hmmio, &ck,
&ckRIFF, MMIO_FINDCHUNK) != S_OK)
return AVIERR_FILEREAD;
/* get memory for format and read it */
This->lpFormat = (LPWAVEFORMATEX)GlobalAllocPtr(GMEM_MOVEABLE, ck.cksize);
if (This->lpFormat == NULL)
return AVIERR_FILEREAD;
This->cbFormat = ck.cksize;
if (mmioRead(This->hmmio, (HPSTR)This->lpFormat, ck.cksize) != ck.cksize)
return AVIERR_FILEREAD;
if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEREAD;
/* Non-pcm formats have a fact chunk.
* We don't need it, so simply add it to the extra chunks.
*/
/* find the big data chunk */
This->ckData.ckid = ckidWAVEDATA;
if (FindChunkAndKeepExtras(&This->extra, This->hmmio, &This->ckData,
&ckRIFF, MMIO_FINDCHUNK) != S_OK)
return AVIERR_FILEREAD;
memset(&This->sInfo, 0, sizeof(This->sInfo));
This->sInfo.fccType = streamtypeAUDIO;
This->sInfo.dwRate = This->lpFormat->nAvgBytesPerSec;
This->sInfo.dwSampleSize =
This->sInfo.dwScale = This->lpFormat->nBlockAlign;
This->sInfo.dwLength = This->ckData.cksize / This->lpFormat->nBlockAlign;
This->sInfo.dwSuggestedBufferSize = This->ckData.cksize;
This->fInfo.dwStreams = 1;
if (mmioAscend(This->hmmio, &This->ckData, 0) != S_OK) {
/* seems to be truncated */
WARN(": file seems to be truncated!\n");
This->ckData.cksize = mmioSeek(This->hmmio, 0, SEEK_END) -
This->ckData.dwDataOffset;
This->sInfo.dwLength = This->ckData.cksize / This->lpFormat->nBlockAlign;
This->sInfo.dwSuggestedBufferSize = This->ckData.cksize;
}
/* ignore errors */
FindChunkAndKeepExtras(&This->extra, This->hmmio, &ck, &ckRIFF, 0);
return AVIERR_OK;
}
static HRESULT AVIFILE_LoadSunFile(IAVIFileImpl *This)
{
SUNAUDIOHEADER auhdr;
mmioSeek(This->hmmio, 0, SEEK_SET);
if (mmioRead(This->hmmio, (HPSTR)&auhdr, sizeof(auhdr)) != sizeof(auhdr))
return AVIERR_FILEREAD;
if (auhdr.fccType == 0x0064732E) {
/* header in little endian */
This->ckData.dwDataOffset = LE2H_DWORD(auhdr.offset);
This->ckData.cksize = LE2H_DWORD(auhdr.size);
auhdr.encoding = LE2H_DWORD(auhdr.encoding);
auhdr.sampleRate = LE2H_DWORD(auhdr.sampleRate);
auhdr.channels = LE2H_DWORD(auhdr.channels);
} else if (auhdr.fccType == mmioFOURCC('.','s','n','d')) {
/* header in big endian */
This->ckData.dwDataOffset = BE2H_DWORD(auhdr.offset);
This->ckData.cksize = BE2H_DWORD(auhdr.size);
auhdr.encoding = BE2H_DWORD(auhdr.encoding);
auhdr.sampleRate = BE2H_DWORD(auhdr.sampleRate);
auhdr.channels = BE2H_DWORD(auhdr.channels);
} else
return AVIERR_FILEREAD;
if (auhdr.channels < 1)
return AVIERR_BADFORMAT;
/* get size of header */
switch(auhdr.encoding) {
case AU_ENCODING_ADPCM_G721_32:
This->cbFormat = sizeof(G721_ADPCMWAVEFORMAT); break;
case AU_ENCODING_ADPCM_G723_24:
This->cbFormat = sizeof(G723_ADPCMWAVEFORMAT); break;
case AU_ENCODING_ADPCM_G722:
case AU_ENCODING_ADPCM_G723_5:
WARN("unsupported Sun audio format %d\n", auhdr.encoding);
return AVIERR_UNSUPPORTED; /* FIXME */
default:
This->cbFormat = sizeof(WAVEFORMATEX); break;
};
This->lpFormat =
(LPWAVEFORMATEX)GlobalAllocPtr(GMEM_MOVEABLE, This->cbFormat);
if (This->lpFormat == NULL)
return AVIERR_MEMORY;
This->lpFormat->nChannels = auhdr.channels;
This->lpFormat->nSamplesPerSec = auhdr.sampleRate;
switch(auhdr.encoding) {
case AU_ENCODING_ULAW_8:
This->lpFormat->wFormatTag = WAVE_FORMAT_MULAW;
This->lpFormat->wBitsPerSample = 8;
break;
case AU_ENCODING_PCM_8:
This->lpFormat->wFormatTag = WAVE_FORMAT_PCM;
This->lpFormat->wBitsPerSample = 8;
break;
case AU_ENCODING_PCM_16:
This->lpFormat->wFormatTag = WAVE_FORMAT_PCM;
This->lpFormat->wBitsPerSample = 16;
break;
case AU_ENCODING_PCM_24:
This->lpFormat->wFormatTag = WAVE_FORMAT_PCM;
This->lpFormat->wBitsPerSample = 24;
break;
case AU_ENCODING_PCM_32:
This->lpFormat->wFormatTag = WAVE_FORMAT_PCM;
This->lpFormat->wBitsPerSample = 32;
break;
case AU_ENCODING_ALAW_8:
This->lpFormat->wFormatTag = WAVE_FORMAT_ALAW;
This->lpFormat->wBitsPerSample = 8;
break;
case AU_ENCODING_ADPCM_G721_32:
This->lpFormat->wFormatTag = WAVE_FORMAT_G721_ADPCM;
This->lpFormat->wBitsPerSample = (3*5*8);
This->lpFormat->nBlockAlign = 15*15*8;
This->lpFormat->cbSize = sizeof(WORD);
((LPG721_ADPCMWAVEFORMAT)This->lpFormat)->nAuxBlockSize = 0;
break;
case AU_ENCODING_ADPCM_G723_24:
This->lpFormat->wFormatTag = WAVE_FORMAT_G723_ADPCM;
This->lpFormat->wBitsPerSample = (3*5*8);
This->lpFormat->nBlockAlign = 15*15*8;
This->lpFormat->cbSize = 2*sizeof(WORD);
((LPG723_ADPCMWAVEFORMAT)This->lpFormat)->cbExtraSize = 0;
((LPG723_ADPCMWAVEFORMAT)This->lpFormat)->nAuxBlockSize = 0;
break;
default:
WARN("unsupported Sun audio format %d\n", auhdr.encoding);
return AVIERR_UNSUPPORTED;
};
This->lpFormat->nBlockAlign =
(This->lpFormat->nChannels * This->lpFormat->wBitsPerSample) / 8;
if (This->lpFormat->nBlockAlign == 0 && This->lpFormat->wBitsPerSample < 8)
This->lpFormat->nBlockAlign++;
This->lpFormat->nAvgBytesPerSec =
This->lpFormat->nBlockAlign * This->lpFormat->nSamplesPerSec;
This->fDirty = 0;
This->sInfo.fccType = streamtypeAUDIO;
This->sInfo.fccHandler = 0;
This->sInfo.dwFlags = 0;
This->sInfo.wPriority = 0;
This->sInfo.wLanguage = 0;
This->sInfo.dwInitialFrames = 0;
This->sInfo.dwScale = This->lpFormat->nBlockAlign;
This->sInfo.dwRate = This->lpFormat->nAvgBytesPerSec;
This->sInfo.dwStart = 0;
This->sInfo.dwLength =
This->ckData.cksize / This->lpFormat->nBlockAlign;
This->sInfo.dwSuggestedBufferSize = This->sInfo.dwLength;
This->sInfo.dwSampleSize = This->lpFormat->nBlockAlign;
This->fInfo.dwStreams = 1;
This->fInfo.dwScale = 1;
This->fInfo.dwRate = This->lpFormat->nSamplesPerSec;
This->fInfo.dwLength =
MulDiv(This->ckData.cksize, This->lpFormat->nSamplesPerSec,
This->lpFormat->nAvgBytesPerSec);
return AVIERR_OK;
}
static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This)
{
MMCKINFO ckRIFF;
MMCKINFO ck;
mmioSeek(This->hmmio, 0, SEEK_SET);
/* create the RIFF chunk with formtype WAVE */
ckRIFF.fccType = formtypeWAVE;
ckRIFF.cksize = 0;
if (mmioCreateChunk(This->hmmio, &ckRIFF, MMIO_CREATERIFF) != S_OK)
return AVIERR_FILEWRITE;
/* the next chunk is the format */
ck.ckid = ckidWAVEFORMAT;
ck.cksize = This->cbFormat;
if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
if (This->lpFormat != NULL && This->cbFormat > 0) {
if (mmioWrite(This->hmmio, (HPSTR)This->lpFormat, ck.cksize) != ck.cksize)
return AVIERR_FILEWRITE;
}
if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
/* fact chunk is needed for non-pcm waveforms */
if (This->lpFormat != NULL && This->cbFormat > sizeof(PCMWAVEFORMAT) &&
This->lpFormat->wFormatTag != WAVE_FORMAT_PCM) {
WAVEFORMATEX wfx;
DWORD dwFactLength;
HACMSTREAM has;
/* try to open an appropriate audio codec to figure out
* data for fact-chunk */
wfx.wFormatTag = WAVE_FORMAT_PCM;
if (acmFormatSuggest(NULL, This->lpFormat, &wfx,
sizeof(wfx), ACM_FORMATSUGGESTF_WFORMATTAG)) {
acmStreamOpen(&has, NULL, This->lpFormat, &wfx, NULL,
0, 0, ACM_STREAMOPENF_NONREALTIME);
acmStreamSize(has, This->ckData.cksize, &dwFactLength,
ACM_STREAMSIZEF_SOURCE);
dwFactLength /= wfx.nBlockAlign;
acmStreamClose(has, 0);
/* create the fact chunk */
ck.ckid = ckidWAVEFACT;
ck.cksize = sizeof(dwFactLength);
/* test for enough space before data chunk */
if (mmioSeek(This->hmmio, 0, SEEK_CUR) > This->ckData.dwDataOffset
- ck.cksize - 4 * sizeof(DWORD))
return AVIERR_FILEWRITE;
if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
if (mmioWrite(This->hmmio, (HPSTR)&dwFactLength, ck.cksize) != ck.cksize)
return AVIERR_FILEWRITE;
if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
} else
ERR(": fact chunk is needed for non-pcm files -- currently no codec found, so skipped!\n");
}
/* if there was extra stuff, we need to fill it with JUNK */
if (mmioSeek(This->hmmio, 0, SEEK_CUR) + 2 * sizeof(DWORD) < This->ckData.dwDataOffset) {
ck.ckid = ckidAVIPADDING;
ck.cksize = 0;
if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
if (mmioSeek(This->hmmio, This->ckData.dwDataOffset
- 2 * sizeof(DWORD), SEEK_SET) == -1)
return AVIERR_FILEWRITE;
if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
}
/* create the data chunk */
ck.ckid = ckidWAVEDATA;
ck.cksize = This->ckData.cksize;
if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
if (mmioSeek(This->hmmio, This->ckData.cksize, SEEK_CUR) == -1)
return AVIERR_FILEWRITE;
if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
return AVIERR_FILEWRITE;
/* some optional extra chunks? */
if (This->extra.lp != NULL && This->extra.cb > 0) {
/* chunk headers are already in structure */
if (mmioWrite(This->hmmio, This->extra.lp, This->extra.cb) != This->extra.cb)
return AVIERR_FILEWRITE;
}
/* close RIFF chunk */
if (mmioAscend(This->hmmio, &ckRIFF, 0) != S_OK)
return AVIERR_FILEWRITE;
if (mmioFlush(This->hmmio, 0) != S_OK)
return AVIERR_FILEWRITE;
return AVIERR_OK;
}
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