Exemplo n.º 1
0
void
Decoder::Write(const char* aBuffer, PRUint32 aCount)
{
  // We're strict about decoder errors
  NS_ABORT_IF_FALSE(!HasDecoderError(),
                    "Not allowed to make more decoder calls after error!");

  // If a data error occured, just ignore future data
  if (HasDataError())
    return;

  // Pass the data along to the implementation
  WriteInternal(aBuffer, aCount);
}
Exemplo n.º 2
0
void
Decoder::FlushInvalidations()
{
  NS_ABORT_IF_FALSE(!HasDecoderError(),
                    "Not allowed to make more decoder calls after error!");

  // If we've got an empty invalidation rect, we have nothing to do
  if (mInvalidRect.IsEmpty())
    return;

  // Tell the image that it's been updated
  mImage->FrameUpdated(mFrameCount - 1, mInvalidRect);

  // Fire OnDataAvailable
  if (mObserver) {
    PRBool isCurrentFrame = mImage->GetCurrentFrameIndex() == (mFrameCount - 1);
    mObserver->OnDataAvailable(nsnull, isCurrentFrame, &mInvalidRect);
  }

  // Clear the invalidation rectangle
  mInvalidRect.SetEmpty();
}
Exemplo n.º 3
0
void
Decoder::FlushInvalidations()
{
  NS_ABORT_IF_FALSE(!HasDecoderError(),
                    "Not allowed to make more decoder calls after error!");

  // If we've got an empty invalidation rect, we have nothing to do
  if (mInvalidRect.IsEmpty())
    return;

  // Tell the image that it's been updated
  mImage.FrameUpdated(mFrameCount - 1, mInvalidRect);

  // Fire OnDataAvailable
  if (mObserver) {
#ifdef XP_MACOSX
    // Bug 703231
    // Because of high quality down sampling on mac we show scan lines while decoding.
    // Bypass this problem by redrawing the border.
    PRInt32 width;
    PRInt32 height;

    mImage.GetWidth(&width);
    mImage.GetHeight(&height);
    nsIntRect mImageBound(0, 0, width, height);

    mInvalidRect.Inflate(1);
    mInvalidRect = mInvalidRect.Intersect(mImageBound);
#endif
    bool isCurrentFrame = mImage.GetCurrentFrameIndex() == (mFrameCount - 1);
    mObserver->OnDataAvailable(nsnull, isCurrentFrame, &mInvalidRect);
  }

  // Clear the invalidation rectangle
  mInvalidRect.SetEmpty();
}
Exemplo n.º 4
0
void
Decoder::Write(const char* aBuffer, uint32_t aCount)
{
  PROFILER_LABEL("ImageDecoder", "Write",
    js::ProfileEntry::Category::GRAPHICS);

  MOZ_ASSERT(aBuffer);
  MOZ_ASSERT(aCount > 0);

  // We're strict about decoder errors
  MOZ_ASSERT(!HasDecoderError(),
             "Not allowed to make more decoder calls after error!");

  // Begin recording telemetry data.
  TimeStamp start = TimeStamp::Now();
  mChunkCount++;

  // Keep track of the total number of bytes written.
  mBytesDecoded += aCount;

  // If a data error occured, just ignore future data.
  if (HasDataError()) {
    return;
  }

  if (IsMetadataDecode() && HasSize()) {
    // More data came in since we found the size. We have nothing to do here.
    return;
  }

  // Pass the data along to the implementation.
  WriteInternal(aBuffer, aCount);

  // Finish telemetry.
  mDecodeTime += (TimeStamp::Now() - start);
}
Exemplo n.º 5
0
void
Decoder::Finish(RasterImage::eShutdownIntent aShutdownIntent)
{
  // Implementation-specific finalization
  if (!HasError())
    FinishInternal();

  // If the implementation left us mid-frame, finish that up.
  if (mInFrame && !HasError())
    PostFrameStop();

  // If PostDecodeDone() has not been called, we need to sent teardown
  // notifications.
  if (!IsSizeDecode() && !mDecodeDone) {

    // Log data errors to the error console
    nsCOMPtr<nsIConsoleService> consoleService =
      do_GetService(NS_CONSOLESERVICE_CONTRACTID);
    nsCOMPtr<nsIScriptError> errorObject =
      do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);

    if (consoleService && errorObject && !HasDecoderError()) {
      nsAutoString msg(NS_LITERAL_STRING("Image corrupt or truncated: ") +
                       NS_ConvertUTF8toUTF16(mImage.GetURIString()));

      if (NS_SUCCEEDED(errorObject->InitWithWindowID(
                         msg,
                         NS_ConvertUTF8toUTF16(mImage.GetURIString()),
                         EmptyString(), 0, 0, nsIScriptError::errorFlag,
                         "Image", mImage.InnerWindowID()
                       ))) {
        consoleService->LogMessage(errorObject);
      }
    }

    bool usable = true;
    if (aShutdownIntent != RasterImage::eShutdownIntent_NotNeeded && !HasDecoderError()) {
      // If we only have a data error, we're usable if we have at least one complete frame.
      if (GetCompleteFrameCount() == 0) {
        usable = false;
      }
    }

    // If we're usable, do exactly what we should have when the decoder
    // completed.
    if (usable) {
      if (mInFrame) {
        PostFrameStop();
      }
      PostDecodeDone();
    } else {
      if (mObserver) {
        mObserver->OnStopDecode(NS_ERROR_FAILURE);
      }
    }
  }

  // Set image metadata before calling DecodingComplete, because DecodingComplete calls Optimize().
  mImageMetadata.SetOnImage(&mImage);

  if (mDecodeDone) {
    mImage.DecodingComplete();
  }
}
Exemplo n.º 6
0
void
Decoder::Finish(ShutdownReason aReason)
{
  MOZ_ASSERT(NS_IsMainThread());

  // Implementation-specific finalization
  if (!HasError())
    FinishInternal();

  // If the implementation left us mid-frame, finish that up.
  if (mInFrame && !HasError())
    PostFrameStop();

  // If PostDecodeDone() has not been called, we need to sent teardown
  // notifications.
  if (!IsSizeDecode() && !mDecodeDone) {

    // Log data errors to the error console
    nsCOMPtr<nsIConsoleService> consoleService =
      do_GetService(NS_CONSOLESERVICE_CONTRACTID);
    nsCOMPtr<nsIScriptError> errorObject =
      do_CreateInstance(NS_SCRIPTERROR_CONTRACTID);

    if (consoleService && errorObject && !HasDecoderError()) {
      nsAutoString msg(NS_LITERAL_STRING("Image corrupt or truncated: ") +
                       NS_ConvertUTF8toUTF16(mImage.GetURIString()));

      if (NS_SUCCEEDED(errorObject->InitWithWindowID(
                         msg,
                         NS_ConvertUTF8toUTF16(mImage.GetURIString()),
                         EmptyString(), 0, 0, nsIScriptError::errorFlag,
                         "Image", mImage.InnerWindowID()
                       ))) {
        consoleService->LogMessage(errorObject);
      }
    }

    bool usable = !HasDecoderError();
    if (aReason != ShutdownReason::NOT_NEEDED && !HasDecoderError()) {
      // If we only have a data error, we're usable if we have at least one complete frame.
      if (GetCompleteFrameCount() == 0) {
        usable = false;
      }
    }

    // If we're usable, do exactly what we should have when the decoder
    // completed.
    if (usable) {
      if (mInFrame) {
        PostFrameStop();
      }
      PostDecodeDone();
    } else {
      if (!IsSizeDecode()) {
        mProgress |= FLAG_DECODE_COMPLETE | FLAG_ONLOAD_UNBLOCKED;
      }
      mProgress |= FLAG_HAS_ERROR;
    }
  }

  // Set image metadata before calling DecodingComplete, because
  // DecodingComplete calls Optimize().
  mImageMetadata.SetOnImage(&mImage);

  if (mDecodeDone) {
    MOZ_ASSERT(HasError() || mCurrentFrame, "Should have an error or a frame");
    mImage.DecodingComplete(mCurrentFrame.get());
  }
}