mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
310 lines
9.8 KiB
C++
310 lines
9.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsMediaPluginReader.h"
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#include "mozilla/TimeStamp.h"
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#include "nsTimeRanges.h"
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#include "MediaResource.h"
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#include "VideoUtils.h"
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#include "nsMediaPluginDecoder.h"
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#include "nsMediaPluginHost.h"
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#include "nsBuiltinDecoderStateMachine.h"
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using namespace mozilla;
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nsMediaPluginReader::nsMediaPluginReader(nsBuiltinDecoder *aDecoder) :
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nsBuiltinDecoderReader(aDecoder),
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mPlugin(NULL),
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mHasAudio(false),
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mHasVideo(false),
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mVideoSeekTimeUs(-1),
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mAudioSeekTimeUs(-1),
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mLastVideoFrame(NULL)
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{
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reinterpret_cast<nsMediaPluginDecoder *>(aDecoder)->GetContentType(mType);
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}
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nsMediaPluginReader::~nsMediaPluginReader()
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{
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ResetDecode();
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}
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nsresult nsMediaPluginReader::Init(nsBuiltinDecoderReader* aCloneDonor)
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{
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return NS_OK;
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}
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nsresult nsMediaPluginReader::ReadMetadata(nsVideoInfo* aInfo,
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nsHTMLMediaElement::MetadataTags** aTags)
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{
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NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
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if (!mPlugin) {
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mPlugin = GetMediaPluginHost()->CreateDecoder(mDecoder->GetResource(), mType);
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if (!mPlugin) {
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return NS_ERROR_FAILURE;
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}
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}
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// Set the total duration (the max of the audio and video track).
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int64_t durationUs;
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mPlugin->GetDuration(mPlugin, &durationUs);
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if (durationUs) {
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ReentrantMonitorAutoEnter mon(mDecoder->GetReentrantMonitor());
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mDecoder->GetStateMachine()->SetDuration(durationUs);
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}
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if (mPlugin->HasVideo(mPlugin)) {
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int32_t width, height;
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mPlugin->GetVideoParameters(mPlugin, &width, &height);
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nsIntRect pictureRect(0, 0, width, height);
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// Validate the container-reported frame and pictureRect sizes. This ensures
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// that our video frame creation code doesn't overflow.
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nsIntSize displaySize(width, height);
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nsIntSize frameSize(width, height);
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if (!nsVideoInfo::ValidateVideoRegion(frameSize, pictureRect, displaySize)) {
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return NS_ERROR_FAILURE;
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}
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// Video track's frame sizes will not overflow. Activate the video track.
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mHasVideo = mInfo.mHasVideo = true;
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mInfo.mDisplay = displaySize;
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mPicture = pictureRect;
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mInitialFrame = frameSize;
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VideoFrameContainer* container = mDecoder->GetVideoFrameContainer();
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if (container) {
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container->SetCurrentFrame(gfxIntSize(displaySize.width, displaySize.height),
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nullptr,
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mozilla::TimeStamp::Now());
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}
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}
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if (mPlugin->HasAudio(mPlugin)) {
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int32_t numChannels, sampleRate;
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mPlugin->GetAudioParameters(mPlugin, &numChannels, &sampleRate);
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mHasAudio = mInfo.mHasAudio = true;
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mInfo.mAudioChannels = numChannels;
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mInfo.mAudioRate = sampleRate;
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}
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*aInfo = mInfo;
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*aTags = nullptr;
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return NS_OK;
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}
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// Resets all state related to decoding, emptying all buffers etc.
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nsresult nsMediaPluginReader::ResetDecode()
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{
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if (mLastVideoFrame) {
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delete mLastVideoFrame;
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mLastVideoFrame = NULL;
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}
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if (mPlugin) {
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GetMediaPluginHost()->DestroyDecoder(mPlugin);
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mPlugin = NULL;
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}
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return NS_OK;
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}
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bool nsMediaPluginReader::DecodeVideoFrame(bool &aKeyframeSkip,
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int64_t aTimeThreshold)
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{
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// Record number of frames decoded and parsed. Automatically update the
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// stats counters using the AutoNotifyDecoded stack-based class.
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uint32_t parsed = 0, decoded = 0;
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nsMediaDecoder::AutoNotifyDecoded autoNotify(mDecoder, parsed, decoded);
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// Throw away the currently buffered frame if we are seeking.
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if (mLastVideoFrame && mVideoSeekTimeUs != -1) {
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delete mLastVideoFrame;
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mLastVideoFrame = NULL;
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}
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// Read next frame
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while (true) {
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MPAPI::VideoFrame frame;
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if (!mPlugin->ReadVideo(mPlugin, &frame, mVideoSeekTimeUs)) {
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// We reached the end of the video stream. If we have a buffered
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// video frame, push it the video queue using the total duration
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// of the video as the end time.
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if (mLastVideoFrame) {
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int64_t durationUs;
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mPlugin->GetDuration(mPlugin, &durationUs);
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mLastVideoFrame->mEndTime = (durationUs > mLastVideoFrame->mTime)
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? durationUs
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: mLastVideoFrame->mTime;
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mVideoQueue.Push(mLastVideoFrame);
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mLastVideoFrame = NULL;
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}
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mVideoQueue.Finish();
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return false;
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}
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mVideoSeekTimeUs = -1;
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if (aKeyframeSkip) {
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// Disable keyframe skipping for now as
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// stagefright doesn't seem to be telling us
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// when a frame is a keyframe.
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#if 0
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if (!frame.mKeyFrame) {
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++parsed;
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continue;
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}
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#endif
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aKeyframeSkip = false;
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}
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VideoData::YCbCrBuffer b;
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b.mPlanes[0].mData = static_cast<uint8_t *>(frame.Y.mData);
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b.mPlanes[0].mStride = frame.Y.mStride;
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b.mPlanes[0].mHeight = frame.Y.mHeight;
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b.mPlanes[0].mWidth = frame.Y.mWidth;
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b.mPlanes[0].mOffset = frame.Y.mOffset;
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b.mPlanes[0].mSkip = frame.Y.mSkip;
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b.mPlanes[1].mData = static_cast<uint8_t *>(frame.Cb.mData);
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b.mPlanes[1].mStride = frame.Cb.mStride;
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b.mPlanes[1].mHeight = frame.Cb.mHeight;
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b.mPlanes[1].mWidth = frame.Cb.mWidth;
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b.mPlanes[1].mOffset = frame.Cb.mOffset;
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b.mPlanes[1].mSkip = frame.Cb.mSkip;
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b.mPlanes[2].mData = static_cast<uint8_t *>(frame.Cr.mData);
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b.mPlanes[2].mStride = frame.Cr.mStride;
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b.mPlanes[2].mHeight = frame.Cr.mHeight;
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b.mPlanes[2].mWidth = frame.Cr.mWidth;
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b.mPlanes[2].mOffset = frame.Cr.mOffset;
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b.mPlanes[2].mSkip = frame.Cr.mSkip;
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nsIntRect picture = mPicture;
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if (frame.Y.mWidth != mInitialFrame.width ||
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frame.Y.mHeight != mInitialFrame.height) {
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// Frame size is different from what the container reports. This is legal,
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// and we will preserve the ratio of the crop rectangle as it
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// was reported relative to the picture size reported by the container.
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picture.x = (mPicture.x * frame.Y.mWidth) / mInitialFrame.width;
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picture.y = (mPicture.y * frame.Y.mHeight) / mInitialFrame.height;
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picture.width = (frame.Y.mWidth * mPicture.width) / mInitialFrame.width;
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picture.height = (frame.Y.mHeight * mPicture.height) / mInitialFrame.height;
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}
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// This is the approximate byte position in the stream.
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int64_t pos = mDecoder->GetResource()->Tell();
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VideoData *v = VideoData::Create(mInfo,
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mDecoder->GetImageContainer(),
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pos,
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frame.mTimeUs,
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frame.mTimeUs+1, // We don't know the end time.
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b,
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frame.mKeyFrame,
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-1,
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picture);
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if (!v) {
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return false;
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}
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parsed++;
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decoded++;
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NS_ASSERTION(decoded <= parsed, "Expect to decode fewer frames than parsed in MediaPlugin...");
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// Since MPAPI doesn't give us the end time of frames, we keep one frame
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// buffered in nsMediaPluginReader and push it into the queue as soon
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// we read the following frame so we can use that frame's start time as
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// the end time of the buffered frame.
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if (!mLastVideoFrame) {
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mLastVideoFrame = v;
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continue;
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}
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mLastVideoFrame->mEndTime = v->mTime;
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// We have the start time of the next frame, so we can push the previous
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// frame into the queue, except if the end time is below the threshold,
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// in which case it wouldn't be displayed anyway.
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if (mLastVideoFrame->mEndTime < aTimeThreshold) {
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delete mLastVideoFrame;
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mLastVideoFrame = NULL;
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continue;
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}
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mVideoQueue.Push(mLastVideoFrame);
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// Buffer the current frame we just decoded.
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mLastVideoFrame = v;
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break;
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}
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return true;
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}
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bool nsMediaPluginReader::DecodeAudioData()
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{
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NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
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// This is the approximate byte position in the stream.
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int64_t pos = mDecoder->GetResource()->Tell();
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// Read next frame
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MPAPI::AudioFrame frame;
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if (!mPlugin->ReadAudio(mPlugin, &frame, mAudioSeekTimeUs)) {
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mAudioQueue.Finish();
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return false;
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}
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mAudioSeekTimeUs = -1;
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// Ignore empty buffers which stagefright media read will sporadically return
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if (frame.mSize == 0)
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return true;
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nsAutoArrayPtr<AudioDataValue> buffer(new AudioDataValue[frame.mSize/2] );
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memcpy(buffer.get(), frame.mData, frame.mSize);
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uint32_t frames = frame.mSize / (2 * frame.mAudioChannels);
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CheckedInt64 duration = FramesToUsecs(frames, frame.mAudioSampleRate);
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if (!duration.isValid()) {
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return false;
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}
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mAudioQueue.Push(new AudioData(pos,
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frame.mTimeUs,
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duration.value(),
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frames,
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buffer.forget(),
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frame.mAudioChannels));
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return true;
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}
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nsresult nsMediaPluginReader::Seek(int64_t aTarget, int64_t aStartTime, int64_t aEndTime, int64_t aCurrentTime)
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{
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NS_ASSERTION(mDecoder->OnDecodeThread(), "Should be on decode thread.");
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mVideoQueue.Erase();
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mAudioQueue.Erase();
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mAudioSeekTimeUs = mVideoSeekTimeUs = aTarget;
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return DecodeToTarget(aTarget);
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}
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nsresult nsMediaPluginReader::GetBuffered(nsTimeRanges* aBuffered, int64_t aStartTime)
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{
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if (!mPlugin)
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return NS_OK;
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MediaResource* stream = mDecoder->GetResource();
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int64_t durationUs = 0;
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mPlugin->GetDuration(mPlugin, &durationUs);
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GetEstimatedBufferedTimeRanges(stream, durationUs, aBuffered);
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return NS_OK;
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}
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