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-rw-r--r--dom/media/directshow/AudioSinkInputPin.cpp195
1 files changed, 195 insertions, 0 deletions
diff --git a/dom/media/directshow/AudioSinkInputPin.cpp b/dom/media/directshow/AudioSinkInputPin.cpp
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index 000000000..85a6e3da3
--- /dev/null
+++ b/dom/media/directshow/AudioSinkInputPin.cpp
@@ -0,0 +1,195 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "AudioSinkInputPin.h"
+#include "AudioSinkFilter.h"
+#include "SampleSink.h"
+#include "mozilla/Logging.h"
+
+#include <wmsdkidl.h>
+
+using namespace mozilla::media;
+
+namespace mozilla {
+
+static LazyLogModule gDirectShowLog("DirectShowDecoder");
+#define LOG(...) MOZ_LOG(gDirectShowLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
+
+AudioSinkInputPin::AudioSinkInputPin(wchar_t* aObjectName,
+ AudioSinkFilter* aFilter,
+ mozilla::CriticalSection* aLock,
+ HRESULT* aOutResult)
+ : BaseInputPin(aObjectName, aFilter, aLock, aOutResult, aObjectName),
+ mSegmentStartTime(0)
+{
+ MOZ_COUNT_CTOR(AudioSinkInputPin);
+ mSampleSink = new SampleSink();
+}
+
+AudioSinkInputPin::~AudioSinkInputPin()
+{
+ MOZ_COUNT_DTOR(AudioSinkInputPin);
+}
+
+HRESULT
+AudioSinkInputPin::GetMediaType(int aPosition, MediaType* aOutMediaType)
+{
+ NS_ENSURE_TRUE(aPosition >= 0, E_INVALIDARG);
+ NS_ENSURE_TRUE(aOutMediaType, E_POINTER);
+
+ if (aPosition > 0) {
+ return S_FALSE;
+ }
+
+ // Note: We set output as PCM, as IEEE_FLOAT only works when using the
+ // MP3 decoder as an MFT, and we can't do that while using DirectShow.
+ aOutMediaType->SetType(&MEDIATYPE_Audio);
+ aOutMediaType->SetSubtype(&MEDIASUBTYPE_PCM);
+ aOutMediaType->SetType(&FORMAT_WaveFormatEx);
+ aOutMediaType->SetTemporalCompression(FALSE);
+
+ return S_OK;
+}
+
+HRESULT
+AudioSinkInputPin::CheckMediaType(const MediaType* aMediaType)
+{
+ if (!aMediaType) {
+ return E_INVALIDARG;
+ }
+
+ GUID majorType = *aMediaType->Type();
+ if (majorType != MEDIATYPE_Audio && majorType != WMMEDIATYPE_Audio) {
+ return E_INVALIDARG;
+ }
+
+ if (*aMediaType->Subtype() != MEDIASUBTYPE_PCM) {
+ return E_INVALIDARG;
+ }
+
+ if (*aMediaType->FormatType() != FORMAT_WaveFormatEx) {
+ return E_INVALIDARG;
+ }
+
+ // We accept the media type, stash its layout format!
+ WAVEFORMATEX* wfx = (WAVEFORMATEX*)(aMediaType->pbFormat);
+ GetSampleSink()->SetAudioFormat(wfx);
+
+ return S_OK;
+}
+
+AudioSinkFilter*
+AudioSinkInputPin::GetAudioSinkFilter()
+{
+ return reinterpret_cast<AudioSinkFilter*>(mFilter);
+}
+
+SampleSink*
+AudioSinkInputPin::GetSampleSink()
+{
+ return mSampleSink;
+}
+
+HRESULT
+AudioSinkInputPin::SetAbsoluteMediaTime(IMediaSample* aSample)
+{
+ HRESULT hr;
+ REFERENCE_TIME start = 0, end = 0;
+ hr = aSample->GetTime(&start, &end);
+ NS_ENSURE_TRUE(SUCCEEDED(hr), E_FAIL);
+ {
+ CriticalSectionAutoEnter lock(*mLock);
+ start += mSegmentStartTime;
+ end += mSegmentStartTime;
+ }
+ hr = aSample->SetMediaTime(&start, &end);
+ NS_ENSURE_TRUE(SUCCEEDED(hr), E_FAIL);
+ return S_OK;
+}
+
+HRESULT
+AudioSinkInputPin::Receive(IMediaSample* aSample )
+{
+ HRESULT hr;
+ NS_ENSURE_TRUE(aSample, E_POINTER);
+
+ hr = BaseInputPin::Receive(aSample);
+ if (SUCCEEDED(hr) && hr != S_FALSE) { // S_FALSE == flushing
+ // Set the timestamp of the sample after being adjusted for
+ // seeking/segments in the "media time" attribute. When we seek,
+ // DirectShow starts a new "segment", and starts labeling samples
+ // from time=0 again, so we need to correct for this to get the
+ // actual timestamps after seeking.
+ hr = SetAbsoluteMediaTime(aSample);
+ NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
+ hr = GetSampleSink()->Receive(aSample);
+ NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
+ }
+ return S_OK;
+}
+
+already_AddRefed<IMediaSeeking>
+AudioSinkInputPin::GetConnectedPinSeeking()
+{
+ RefPtr<IPin> peer = GetConnected();
+ if (!peer)
+ return nullptr;
+ RefPtr<IMediaSeeking> seeking;
+ peer->QueryInterface(static_cast<IMediaSeeking**>(getter_AddRefs(seeking)));
+ return seeking.forget();
+}
+
+HRESULT
+AudioSinkInputPin::BeginFlush()
+{
+ HRESULT hr = media::BaseInputPin::BeginFlush();
+ NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
+
+ GetSampleSink()->Flush();
+
+ return S_OK;
+}
+
+HRESULT
+AudioSinkInputPin::EndFlush()
+{
+ HRESULT hr = media::BaseInputPin::EndFlush();
+ NS_ENSURE_TRUE(SUCCEEDED(hr), hr);
+
+ // Reset the EOS flag, so that if we're called after a seek we still work.
+ GetSampleSink()->Reset();
+
+ return S_OK;
+}
+
+HRESULT
+AudioSinkInputPin::EndOfStream(void)
+{
+ HRESULT hr = media::BaseInputPin::EndOfStream();
+ if (FAILED(hr) || hr == S_FALSE) {
+ // Pin is stil flushing.
+ return hr;
+ }
+ GetSampleSink()->SetEOS();
+
+ return S_OK;
+}
+
+
+HRESULT
+AudioSinkInputPin::NewSegment(REFERENCE_TIME tStart,
+ REFERENCE_TIME tStop,
+ double dRate)
+{
+ CriticalSectionAutoEnter lock(*mLock);
+ // Record the start time of the new segment, so that we can store the
+ // correct absolute timestamp in the "media time" each incoming sample.
+ mSegmentStartTime = tStart;
+ return S_OK;
+}
+
+} // namespace mozilla
+