text: /*
   * ACM Wrapper
   *
   * Copyright 2005 Christian Costa
   *
   * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   */
  
  #include "quartz_private.h"
  
  #include "uuids.h"
  #include "mmreg.h"
  #include "windef.h"
  #include "winbase.h"
  #include "dshow.h"
  #include "strmif.h"
  #include "vfwmsgs.h"
  #include "msacm.h"
  
  #include <assert.h>
  
  #include "wine/debug.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  
  typedef struct ACMWrapperImpl
  {
      TransformFilter tf;
  
      HACMSTREAM has;
      LPWAVEFORMATEX pWfIn;
      LPWAVEFORMATEX pWfOut;
  
      LONGLONG lasttime_real;
      LONGLONG lasttime_sent;
  } ACMWrapperImpl;
  
  static inline ACMWrapperImpl *impl_from_TransformFilter( TransformFilter *iface )
  {
      return CONTAINING_RECORD(iface, ACMWrapperImpl, tf);
  }
  
  static HRESULT WINAPI ACMWrapper_Receive(TransformFilter *tf, IMediaSample *pSample)
  {
      ACMWrapperImpl* This = impl_from_TransformFilter(tf);
      IMediaSample* pOutSample = NULL;
      DWORD cbDstStream, cbSrcStream;
      LPBYTE pbDstStream;
      LPBYTE pbSrcStream = NULL;
      ACMSTREAMHEADER ash;
      BOOL unprepare_header = FALSE, preroll;
      MMRESULT res;
      HRESULT hr;
      LONGLONG tStart = -1, tStop = -1, tMed;
      LONGLONG mtStart = -1, mtStop = -1, mtMed;
  
      EnterCriticalSection(&This->tf.csReceive);
      hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
      if (FAILED(hr))
      {
          ERR("Cannot get pointer to sample data (%x)\n", hr);
          LeaveCriticalSection(&This->tf.csReceive);
          return hr;
      }
  
      preroll = (IMediaSample_IsPreroll(pSample) == S_OK);
  
      IMediaSample_GetTime(pSample, &tStart, &tStop);
      if (IMediaSample_GetMediaTime(pSample, &mtStart, &mtStop) != S_OK)
          mtStart = mtStop = -1;
      cbSrcStream = IMediaSample_GetActualDataLength(pSample);
  
      /* Prevent discontinuities when codecs 'absorb' data but not give anything back in return */
      if (IMediaSample_IsDiscontinuity(pSample) == S_OK)
      {
          This->lasttime_real = tStart;
          This->lasttime_sent = tStart;
      }
      else if (This->lasttime_real == tStart)
          tStart = This->lasttime_sent;
      else
          WARN("Discontinuity\n");
  
      tMed = tStart;
      mtMed = mtStart;
  
      TRACE("Sample data ptr = %p, size = %d\n", pbSrcStream, cbSrcStream);
  
      ash.pbSrc = pbSrcStream;
      ash.cbSrcLength = cbSrcStream;
  
      while(hr == S_OK && ash.cbSrcLength)
      {
          hr = BaseOutputPinImpl_GetDeliveryBuffer(&This->tf.source, &pOutSample, NULL, NULL, 0);
          if (FAILED(hr))
          {
              ERR("Unable to get delivery buffer (%x)\n", hr);
              LeaveCriticalSection(&This->tf.csReceive);
              return hr;
          }
          IMediaSample_SetPreroll(pOutSample, preroll);
  
  	hr = IMediaSample_SetActualDataLength(pOutSample, 0);
  	assert(hr == S_OK);
  
  	hr = IMediaSample_GetPointer(pOutSample, &pbDstStream);
  	if (FAILED(hr)) {
  	    ERR("Unable to get pointer to buffer (%x)\n", hr);
  	    goto error;
  	}
  	cbDstStream = IMediaSample_GetSize(pOutSample);
  
  	ash.cbStruct = sizeof(ash);
  	ash.fdwStatus = 0;
  	ash.dwUser = 0;
  	ash.pbDst = pbDstStream;
  	ash.cbDstLength = cbDstStream;
  
  	if ((res = acmStreamPrepareHeader(This->has, &ash, 0))) {
  	    ERR("Cannot prepare header %d\n", res);
  	    goto error;
  	}
  	unprepare_header = TRUE;
  
          if (IMediaSample_IsDiscontinuity(pSample) == S_OK)
          {
              res = acmStreamConvert(This->has, &ash, ACM_STREAMCONVERTF_START);
              IMediaSample_SetDiscontinuity(pOutSample, TRUE);
              /* One sample could be converted to multiple packets */
              IMediaSample_SetDiscontinuity(pSample, FALSE);
          }
          else
          {
              res = acmStreamConvert(This->has, &ash, 0);
              IMediaSample_SetDiscontinuity(pOutSample, FALSE);
          }
  
          if (res)
          {
              if(res != MMSYSERR_MOREDATA)
                  ERR("Cannot convert data header %d\n", res);
              goto error;
          }
  
          TRACE("used in %u/%u, used out %u/%u\n", ash.cbSrcLengthUsed, ash.cbSrcLength, ash.cbDstLengthUsed, ash.cbDstLength);
  
          hr = IMediaSample_SetActualDataLength(pOutSample, ash.cbDstLengthUsed);
          assert(hr == S_OK);
  
          /* Bug in acm codecs? It apparently uses the input, but doesn't necessarily output immediately */
          if (!ash.cbSrcLengthUsed)
          {
              WARN("Sample was skipped? Outputted: %u\n", ash.cbDstLengthUsed);
              ash.cbSrcLength = 0;
              goto error;
          }
  
          TRACE("Sample start time: %u.%03u\n", (DWORD)(tStart/10000000), (DWORD)((tStart/10000)%1000));
          if (ash.cbSrcLengthUsed == cbSrcStream)
          {
              IMediaSample_SetTime(pOutSample, &tStart, &tStop);
              tStart = tMed = tStop;
          }
          else if (tStop != tStart)
          {
              tMed = tStop - tStart;
              tMed = tStart + tMed * ash.cbSrcLengthUsed / cbSrcStream;
              IMediaSample_SetTime(pOutSample, &tStart, &tMed);
              tStart = tMed;
          }
          else
          {
              ERR("No valid timestamp found\n");
              IMediaSample_SetTime(pOutSample, NULL, NULL);
          }
  
          if (mtStart < 0) {
              IMediaSample_SetMediaTime(pOutSample, NULL, NULL);
          } else if (ash.cbSrcLengthUsed == cbSrcStream) {
              IMediaSample_SetMediaTime(pOutSample, &mtStart, &mtStop);
              mtStart = mtMed = mtStop;
          } else if (mtStop >= mtStart) {
              mtMed = mtStop - mtStart;
              mtMed = mtStart + mtMed * ash.cbSrcLengthUsed / cbSrcStream;
              IMediaSample_SetMediaTime(pOutSample, &mtStart, &mtMed);
              mtStart = mtMed;
          } else {
              IMediaSample_SetMediaTime(pOutSample, NULL, NULL);
          }
  
          TRACE("Sample stop time: %u.%03u\n", (DWORD)(tStart/10000000), (DWORD)((tStart/10000)%1000));
  
          LeaveCriticalSection(&This->tf.csReceive);
          hr = BaseOutputPinImpl_Deliver(&This->tf.source, pOutSample);
          EnterCriticalSection(&This->tf.csReceive);
  
          if (hr != S_OK && hr != VFW_E_NOT_CONNECTED) {
              if (FAILED(hr))
                  ERR("Error sending sample (%x)\n", hr);
              goto error;
          }
  
  error:
          if (unprepare_header && (res = acmStreamUnprepareHeader(This->has, &ash, 0)))
              ERR("Cannot unprepare header %d\n", res);
          unprepare_header = FALSE;
          ash.pbSrc += ash.cbSrcLengthUsed;
          ash.cbSrcLength -= ash.cbSrcLengthUsed;
  
          IMediaSample_Release(pOutSample);
          pOutSample = NULL;
  
      }
  
      This->lasttime_real = tStop;
      This->lasttime_sent = tMed;
  
      LeaveCriticalSection(&This->tf.csReceive);
      return hr;
  }
  
  static HRESULT WINAPI ACMWrapper_SetMediaType(TransformFilter *tf, PIN_DIRECTION dir, const AM_MEDIA_TYPE * pmt)
  {
      ACMWrapperImpl* This = impl_from_TransformFilter(tf);
      MMRESULT res;
  
      TRACE("(%p)->(%i %p)\n", This, dir, pmt);
  
      if (dir != PINDIR_INPUT)
          return S_OK;
  
      /* Check root (GUID w/o FOURCC) */
      if ((IsEqualIID(&pmt->majortype, &MEDIATYPE_Audio)) &&
          (!memcmp(((const char *)&pmt->subtype)+4, ((const char *)&MEDIATYPE_Audio)+4, sizeof(GUID)-4)) &&
          (IsEqualIID(&pmt->formattype, &FORMAT_WaveFormatEx)))
      {
          HACMSTREAM drv;
          WAVEFORMATEX *wfx = (WAVEFORMATEX*)pmt->pbFormat;
          AM_MEDIA_TYPE* outpmt = &This->tf.pmt;
  
          if (!wfx || wfx->wFormatTag == WAVE_FORMAT_PCM || wfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
              return VFW_E_TYPE_NOT_ACCEPTED;
          FreeMediaType(outpmt);
  
          This->pWfIn = (LPWAVEFORMATEX)pmt->pbFormat;
  
  	/* HACK */
  	/* TRACE("ALIGN = %d\n", pACMWrapper->pWfIn->nBlockAlign); */
  	/* pACMWrapper->pWfIn->nBlockAlign = 1; */
  
  	/* Set output audio data to PCM */
          CopyMediaType(outpmt, pmt);
          outpmt->subtype.Data1 = WAVE_FORMAT_PCM;
  	This->pWfOut = (WAVEFORMATEX*)outpmt->pbFormat;
  	This->pWfOut->wFormatTag = WAVE_FORMAT_PCM;
  	This->pWfOut->wBitsPerSample = 16;
  	This->pWfOut->nBlockAlign = This->pWfOut->wBitsPerSample * This->pWfOut->nChannels / 8;
  	This->pWfOut->cbSize = 0;
  	This->pWfOut->nAvgBytesPerSec = This->pWfOut->nChannels * This->pWfOut->nSamplesPerSec
  						* (This->pWfOut->wBitsPerSample/8);
  
          if (!(res = acmStreamOpen(&drv, NULL, This->pWfIn, This->pWfOut, NULL, 0, 0, 0)))
          {
              This->has = drv;
  
              TRACE("Connection accepted\n");
              return S_OK;
          }
  	else
  	    FIXME("acmStreamOpen returned %d\n", res);
          FreeMediaType(outpmt);
          TRACE("Unable to find a suitable ACM decompressor\n");
      }
  
      TRACE("Connection refused\n");
      return VFW_E_TYPE_NOT_ACCEPTED;
  }
  
  static HRESULT WINAPI ACMWrapper_CompleteConnect(TransformFilter *tf, PIN_DIRECTION dir, IPin *pin)
  {
      ACMWrapperImpl* This = impl_from_TransformFilter(tf);
      MMRESULT res;
      HACMSTREAM drv;
  
      TRACE("(%p)\n", This);
  
      if (dir != PINDIR_INPUT)
          return S_OK;
  
      if (!(res = acmStreamOpen(&drv, NULL, This->pWfIn, This->pWfOut, NULL, 0, 0, 0)))
      {
          This->has = drv;
  
          TRACE("Connection accepted\n");
          return S_OK;
      }
  
      FIXME("acmStreamOpen returned %d\n", res);
      TRACE("Unable to find a suitable ACM decompressor\n");
      return VFW_E_TYPE_NOT_ACCEPTED;
  }
  
  static HRESULT WINAPI ACMWrapper_BreakConnect(TransformFilter *tf, PIN_DIRECTION dir)
  {
      ACMWrapperImpl *This = impl_from_TransformFilter(tf);
  
      TRACE("(%p)->(%i)\n", This,dir);
  
      if (dir == PINDIR_INPUT)
      {
          if (This->has)
              acmStreamClose(This->has, 0);
  
          This->has = 0;
          This->lasttime_real = This->lasttime_sent = -1;
      }
  
      return S_OK;
  }
  
  static HRESULT WINAPI ACMWrapper_DecideBufferSize(TransformFilter *tf, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
  {
      ACMWrapperImpl *pACM = impl_from_TransformFilter(tf);
      ALLOCATOR_PROPERTIES actual;
  
      if (!ppropInputRequest->cbAlign)
          ppropInputRequest->cbAlign = 1;
  
      if (ppropInputRequest->cbBuffer < pACM->pWfOut->nAvgBytesPerSec / 2)
              ppropInputRequest->cbBuffer = pACM->pWfOut->nAvgBytesPerSec / 2;
  
      if (!ppropInputRequest->cBuffers)
          ppropInputRequest->cBuffers = 1;
  
      return IMemAllocator_SetProperties(pAlloc, ppropInputRequest, &actual);
  }
  
  static const TransformFilterFuncTable ACMWrapper_FuncsTable = {
      ACMWrapper_DecideBufferSize,
      NULL,
      ACMWrapper_Receive,
      NULL,
      NULL,
      ACMWrapper_SetMediaType,
      ACMWrapper_CompleteConnect,
      ACMWrapper_BreakConnect,
      NULL,
      NULL,
      NULL,
      NULL
  };
  
  HRESULT ACMWrapper_create(IUnknown *outer, void **out)
  {
      HRESULT hr;
      ACMWrapperImpl* This;
  
      *out = NULL;
  
      hr = strmbase_transform_create(sizeof(ACMWrapperImpl), outer, &CLSID_ACMWrapper,
              &ACMWrapper_FuncsTable, (IBaseFilter **)&This);
  
      if (FAILED(hr))
          return hr;
  
      *out = &This->tf.filter.IUnknown_inner;
      This->lasttime_real = This->lasttime_sent = -1;
  
      return hr;
  }
  