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gecko-dev/content/media/MediaDecoderReader.cpp

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/* -*- 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 "GonkIOSurfaceImage.h"
#include "MediaDecoderReader.h"
#include "AbstractMediaDecoder.h"
#include "MediaDecoderStateMachine.h"
#include "VideoUtils.h"
#include "ImageContainer.h"
#include "mozilla/mozalloc.h"
#include "mozilla/StandardInteger.h"
#include <algorithm>
namespace mozilla {
using layers::ImageContainer;
using layers::PlanarYCbCrImage;
// Verify these values are sane. Once we've checked the frame sizes, we then
// can do less integer overflow checking.
PR_STATIC_ASSERT(MAX_VIDEO_WIDTH < PlanarYCbCrImage::MAX_DIMENSION);
PR_STATIC_ASSERT(MAX_VIDEO_HEIGHT < PlanarYCbCrImage::MAX_DIMENSION);
PR_STATIC_ASSERT(PlanarYCbCrImage::MAX_DIMENSION < UINT32_MAX / PlanarYCbCrImage::MAX_DIMENSION);
// Un-comment to enable logging of seek bisections.
//#define SEEK_LOGGING
#ifdef PR_LOGGING
extern PRLogModuleInfo* gMediaDecoderLog;
#define LOG(type, msg) PR_LOG(gMediaDecoderLog, type, msg)
#ifdef SEEK_LOGGING
#define SEEK_LOG(type, msg) PR_LOG(gMediaDecoderLog, type, msg)
#else
#define SEEK_LOG(type, msg)
#endif
#else
#define LOG(type, msg)
#define SEEK_LOG(type, msg)
#endif
void
AudioData::EnsureAudioBuffer()
{
if (mAudioBuffer)
return;
mAudioBuffer = SharedBuffer::Create(mFrames*mChannels*sizeof(AudioDataValue));
AudioDataValue* data = static_cast<AudioDataValue*>(mAudioBuffer->Data());
for (uint32_t i = 0; i < mFrames; ++i) {
for (uint32_t j = 0; j < mChannels; ++j) {
data[j*mFrames + i] = mAudioData[i*mChannels + j];
}
}
}
static bool
ValidatePlane(const VideoData::YCbCrBuffer::Plane& aPlane)
{
return aPlane.mWidth <= PlanarYCbCrImage::MAX_DIMENSION &&
aPlane.mHeight <= PlanarYCbCrImage::MAX_DIMENSION &&
aPlane.mWidth * aPlane.mHeight < MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT &&
aPlane.mStride > 0;
}
static bool
IsYV12Format(const VideoData::YCbCrBuffer::Plane& aYPlane,
const VideoData::YCbCrBuffer::Plane& aCbPlane,
const VideoData::YCbCrBuffer::Plane& aCrPlane)
{
return
aYPlane.mWidth % 2 == 0 &&
aYPlane.mHeight % 2 == 0 &&
aYPlane.mWidth / 2 == aCbPlane.mWidth &&
aYPlane.mHeight / 2 == aCbPlane.mHeight &&
aCbPlane.mWidth == aCrPlane.mWidth &&
aCbPlane.mHeight == aCrPlane.mHeight;
}
bool
VideoInfo::ValidateVideoRegion(const nsIntSize& aFrame,
const nsIntRect& aPicture,
const nsIntSize& aDisplay)
{
return
aFrame.width <= PlanarYCbCrImage::MAX_DIMENSION &&
aFrame.height <= PlanarYCbCrImage::MAX_DIMENSION &&
aFrame.width * aFrame.height <= MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT &&
aFrame.width * aFrame.height != 0 &&
aPicture.width <= PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.x < PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.x + aPicture.width < PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.height <= PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.y < PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.y + aPicture.height < PlanarYCbCrImage::MAX_DIMENSION &&
aPicture.width * aPicture.height <= MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT &&
aPicture.width * aPicture.height != 0 &&
aDisplay.width <= PlanarYCbCrImage::MAX_DIMENSION &&
aDisplay.height <= PlanarYCbCrImage::MAX_DIMENSION &&
aDisplay.width * aDisplay.height <= MAX_VIDEO_WIDTH * MAX_VIDEO_HEIGHT &&
aDisplay.width * aDisplay.height != 0;
}
VideoData:: VideoData(int64_t aOffset, int64_t aTime, int64_t aEndTime, int64_t aTimecode)
: mOffset(aOffset),
mTime(aTime),
mEndTime(aEndTime),
mTimecode(aTimecode),
mDuplicate(true),
mKeyframe(false)
{
MOZ_COUNT_CTOR(VideoData);
NS_ASSERTION(aEndTime >= aTime, "Frame must start before it ends.");
}
VideoData::VideoData(int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
bool aKeyframe,
int64_t aTimecode,
nsIntSize aDisplay)
: mDisplay(aDisplay),
mOffset(aOffset),
mTime(aTime),
mEndTime(aEndTime),
mTimecode(aTimecode),
mDuplicate(false),
mKeyframe(aKeyframe)
{
MOZ_COUNT_CTOR(VideoData);
NS_ASSERTION(aEndTime >= aTime, "Frame must start before it ends.");
}
VideoData::~VideoData()
{
MOZ_COUNT_DTOR(VideoData);
}
VideoData* VideoData::Create(VideoInfo& aInfo,
ImageContainer* aContainer,
Image* aImage,
int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
const YCbCrBuffer& aBuffer,
bool aKeyframe,
int64_t aTimecode,
nsIntRect aPicture)
{
if (!aImage && !aContainer) {
// Create a dummy VideoData with no image. This gives us something to
// send to media streams if necessary.
nsAutoPtr<VideoData> v(new VideoData(aOffset,
aTime,
aEndTime,
aKeyframe,
aTimecode,
aInfo.mDisplay));
return v.forget();
}
// The following situation should never happen unless there is a bug
// in the decoder
if (aBuffer.mPlanes[1].mWidth != aBuffer.mPlanes[2].mWidth ||
aBuffer.mPlanes[1].mHeight != aBuffer.mPlanes[2].mHeight) {
NS_ERROR("C planes with different sizes");
return nullptr;
}
// The following situations could be triggered by invalid input
if (aPicture.width <= 0 || aPicture.height <= 0) {
NS_WARNING("Empty picture rect");
return nullptr;
}
if (!ValidatePlane(aBuffer.mPlanes[0]) || !ValidatePlane(aBuffer.mPlanes[1]) ||
!ValidatePlane(aBuffer.mPlanes[2])) {
NS_WARNING("Invalid plane size");
return nullptr;
}
// Ensure the picture size specified in the headers can be extracted out of
// the frame we've been supplied without indexing out of bounds.
CheckedUint32 xLimit = aPicture.x + CheckedUint32(aPicture.width);
CheckedUint32 yLimit = aPicture.y + CheckedUint32(aPicture.height);
if (!xLimit.isValid() || xLimit.value() > aBuffer.mPlanes[0].mStride ||
!yLimit.isValid() || yLimit.value() > aBuffer.mPlanes[0].mHeight)
{
// The specified picture dimensions can't be contained inside the video
// frame, we'll stomp memory if we try to copy it. Fail.
NS_WARNING("Overflowing picture rect");
return nullptr;
}
nsAutoPtr<VideoData> v(new VideoData(aOffset,
aTime,
aEndTime,
aKeyframe,
aTimecode,
aInfo.mDisplay));
const YCbCrBuffer::Plane &Y = aBuffer.mPlanes[0];
const YCbCrBuffer::Plane &Cb = aBuffer.mPlanes[1];
const YCbCrBuffer::Plane &Cr = aBuffer.mPlanes[2];
if (!aImage) {
// Currently our decoder only knows how to output to PLANAR_YCBCR
// format.
ImageFormat format[2] = {PLANAR_YCBCR, GRALLOC_PLANAR_YCBCR};
if (IsYV12Format(Y, Cb, Cr)) {
v->mImage = aContainer->CreateImage(format, 2);
} else {
v->mImage = aContainer->CreateImage(format, 1);
}
} else {
v->mImage = aImage;
}
if (!v->mImage) {
return nullptr;
}
NS_ASSERTION(v->mImage->GetFormat() == PLANAR_YCBCR ||
v->mImage->GetFormat() == GRALLOC_PLANAR_YCBCR,
"Wrong format?");
PlanarYCbCrImage* videoImage = static_cast<PlanarYCbCrImage*>(v->mImage.get());
PlanarYCbCrImage::Data data;
data.mYChannel = Y.mData + Y.mOffset;
data.mYSize = gfxIntSize(Y.mWidth, Y.mHeight);
data.mYStride = Y.mStride;
data.mYSkip = Y.mSkip;
data.mCbChannel = Cb.mData + Cb.mOffset;
data.mCrChannel = Cr.mData + Cr.mOffset;
data.mCbCrSize = gfxIntSize(Cb.mWidth, Cb.mHeight);
data.mCbCrStride = Cb.mStride;
data.mCbSkip = Cb.mSkip;
data.mCrSkip = Cr.mSkip;
data.mPicX = aPicture.x;
data.mPicY = aPicture.y;
data.mPicSize = gfxIntSize(aPicture.width, aPicture.height);
data.mStereoMode = aInfo.mStereoMode;
videoImage->SetDelayedConversion(true);
if (!aImage) {
videoImage->SetData(data);
} else {
videoImage->SetDataNoCopy(data);
}
return v.forget();
}
VideoData* VideoData::Create(VideoInfo& aInfo,
ImageContainer* aContainer,
int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
const YCbCrBuffer& aBuffer,
bool aKeyframe,
int64_t aTimecode,
nsIntRect aPicture)
{
return Create(aInfo, aContainer, nullptr, aOffset, aTime, aEndTime, aBuffer,
aKeyframe, aTimecode, aPicture);
}
VideoData* VideoData::Create(VideoInfo& aInfo,
Image* aImage,
int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
const YCbCrBuffer& aBuffer,
bool aKeyframe,
int64_t aTimecode,
nsIntRect aPicture)
{
return Create(aInfo, nullptr, aImage, aOffset, aTime, aEndTime, aBuffer,
aKeyframe, aTimecode, aPicture);
}
VideoData* VideoData::CreateFromImage(VideoInfo& aInfo,
ImageContainer* aContainer,
int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
const nsRefPtr<Image>& aImage,
bool aKeyframe,
int64_t aTimecode,
nsIntRect aPicture)
{
nsAutoPtr<VideoData> v(new VideoData(aOffset,
aTime,
aEndTime,
aKeyframe,
aTimecode,
aInfo.mDisplay));
v->mImage = aImage;
return v.forget();
}
#ifdef MOZ_WIDGET_GONK
VideoData* VideoData::Create(VideoInfo& aInfo,
ImageContainer* aContainer,
int64_t aOffset,
int64_t aTime,
int64_t aEndTime,
mozilla::layers::GraphicBufferLocked* aBuffer,
bool aKeyframe,
int64_t aTimecode,
nsIntRect aPicture)
{
if (!aContainer) {
// Create a dummy VideoData with no image. This gives us something to
// send to media streams if necessary.
nsAutoPtr<VideoData> v(new VideoData(aOffset,
aTime,
aEndTime,
aKeyframe,
aTimecode,
aInfo.mDisplay));
return v.forget();
}
// The following situations could be triggered by invalid input
if (aPicture.width <= 0 || aPicture.height <= 0) {
NS_WARNING("Empty picture rect");
return nullptr;
}
// Ensure the picture size specified in the headers can be extracted out of
// the frame we've been supplied without indexing out of bounds.
CheckedUint32 xLimit = aPicture.x + CheckedUint32(aPicture.width);
CheckedUint32 yLimit = aPicture.y + CheckedUint32(aPicture.height);
if (!xLimit.isValid() || !yLimit.isValid())
{
// The specified picture dimensions can't be contained inside the video
// frame, we'll stomp memory if we try to copy it. Fail.
NS_WARNING("Overflowing picture rect");
return nullptr;
}
nsAutoPtr<VideoData> v(new VideoData(aOffset,
aTime,
aEndTime,
aKeyframe,
aTimecode,
aInfo.mDisplay));
ImageFormat format = GONK_IO_SURFACE;
v->mImage = aContainer->CreateImage(&format, 1);
if (!v->mImage) {
return nullptr;
}
NS_ASSERTION(v->mImage->GetFormat() == GONK_IO_SURFACE,
"Wrong format?");
typedef mozilla::layers::GonkIOSurfaceImage GonkIOSurfaceImage;
GonkIOSurfaceImage* videoImage = static_cast<GonkIOSurfaceImage*>(v->mImage.get());
GonkIOSurfaceImage::Data data;
data.mPicSize = gfxIntSize(aPicture.width, aPicture.height);
data.mGraphicBuffer = aBuffer;
videoImage->SetData(data);
return v.forget();
}
#endif // MOZ_WIDGET_GONK
void* MediaDecoderReader::VideoQueueMemoryFunctor::operator()(void* anObject) {
const VideoData* v = static_cast<const VideoData*>(anObject);
if (!v->mImage) {
return nullptr;
}
NS_ASSERTION(v->mImage->GetFormat() == PLANAR_YCBCR,
"Wrong format?");
mozilla::layers::PlanarYCbCrImage* vi = static_cast<mozilla::layers::PlanarYCbCrImage*>(v->mImage.get());
mResult += vi->GetDataSize();
return nullptr;
}
MediaDecoderReader::MediaDecoderReader(AbstractMediaDecoder* aDecoder)
: mDecoder(aDecoder)
{
MOZ_COUNT_CTOR(MediaDecoderReader);
}
MediaDecoderReader::~MediaDecoderReader()
{
ResetDecode();
MOZ_COUNT_DTOR(MediaDecoderReader);
}
nsresult MediaDecoderReader::ResetDecode()
{
nsresult res = NS_OK;
VideoQueue().Reset();
AudioQueue().Reset();
return res;
}
VideoData* MediaDecoderReader::DecodeToFirstVideoData()
{
bool eof = false;
while (!eof && VideoQueue().GetSize() == 0) {
{
ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
if (mDecoder->IsShutdown()) {
return nullptr;
}
}
bool keyframeSkip = false;
eof = !DecodeVideoFrame(keyframeSkip, 0);
}
VideoData* d = nullptr;
return (d = VideoQueue().PeekFront()) ? d : nullptr;
}
AudioData* MediaDecoderReader::DecodeToFirstAudioData()
{
bool eof = false;
while (!eof && AudioQueue().GetSize() == 0) {
{
ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
if (mDecoder->IsShutdown()) {
return nullptr;
}
}
eof = !DecodeAudioData();
}
AudioData* d = nullptr;
return (d = AudioQueue().PeekFront()) ? d : nullptr;
}
VideoData* MediaDecoderReader::FindStartTime(int64_t& aOutStartTime)
{
NS_ASSERTION(mDecoder->OnStateMachineThread() || mDecoder->OnDecodeThread(),
"Should be on state machine or decode thread.");
// Extract the start times of the bitstreams in order to calculate
// the duration.
int64_t videoStartTime = INT64_MAX;
int64_t audioStartTime = INT64_MAX;
VideoData* videoData = nullptr;
if (HasVideo()) {
videoData = DecodeToFirstVideoData();
if (videoData) {
videoStartTime = videoData->mTime;
}
}
if (HasAudio()) {
AudioData* audioData = DecodeToFirstAudioData();
if (audioData) {
audioStartTime = audioData->mTime;
}
}
int64_t startTime = std::min(videoStartTime, audioStartTime);
if (startTime != INT64_MAX) {
aOutStartTime = startTime;
}
return videoData;
}
nsresult MediaDecoderReader::DecodeToTarget(int64_t aTarget)
{
// Decode forward to the target frame. Start with video, if we have it.
if (HasVideo()) {
bool eof = false;
int64_t startTime = -1;
nsAutoPtr<VideoData> video;
while (HasVideo() && !eof) {
while (VideoQueue().GetSize() == 0 && !eof) {
bool skip = false;
eof = !DecodeVideoFrame(skip, 0);
{
ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
if (mDecoder->IsShutdown()) {
return NS_ERROR_FAILURE;
}
}
}
if (VideoQueue().GetSize() == 0) {
// Hit end of file, we want to display the last frame of the video.
if (video) {
VideoQueue().PushFront(video.forget());
}
break;
}
video = VideoQueue().PeekFront();
// If the frame end time is less than the seek target, we won't want
// to display this frame after the seek, so discard it.
if (video && video->mEndTime <= aTarget) {
if (startTime == -1) {
startTime = video->mTime;
}
VideoQueue().PopFront();
} else {
video.forget();
break;
}
}
{
ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
if (mDecoder->IsShutdown()) {
return NS_ERROR_FAILURE;
}
}
LOG(PR_LOG_DEBUG, ("First video frame after decode is %lld", startTime));
}
if (HasAudio()) {
// Decode audio forward to the seek target.
bool eof = false;
while (HasAudio() && !eof) {
while (!eof && AudioQueue().GetSize() == 0) {
eof = !DecodeAudioData();
{
ReentrantMonitorAutoEnter decoderMon(mDecoder->GetReentrantMonitor());
if (mDecoder->IsShutdown()) {
return NS_ERROR_FAILURE;
}
}
}
const AudioData* audio = AudioQueue().PeekFront();
if (!audio)
break;
CheckedInt64 startFrame = UsecsToFrames(audio->mTime, mInfo.mAudioRate);
CheckedInt64 targetFrame = UsecsToFrames(aTarget, mInfo.mAudioRate);
if (!startFrame.isValid() || !targetFrame.isValid()) {
return NS_ERROR_FAILURE;
}
if (startFrame.value() + audio->mFrames <= targetFrame.value()) {
// Our seek target lies after the frames in this AudioData. Pop it
// off the queue, and keep decoding forwards.
delete AudioQueue().PopFront();
audio = nullptr;
continue;
}
if (startFrame.value() > targetFrame.value()) {
// The seek target doesn't lie in the audio block just after the last
// audio frames we've seen which were before the seek target. This
// could have been the first audio data we've seen after seek, i.e. the
// seek terminated after the seek target in the audio stream. Just
// abort the audio decode-to-target, the state machine will play
// silence to cover the gap. Typically this happens in poorly muxed
// files.
NS_WARNING("Audio not synced after seek, maybe a poorly muxed file?");
break;
}
// The seek target lies somewhere in this AudioData's frames, strip off
// any frames which lie before the seek target, so we'll begin playback
// exactly at the seek target.
NS_ASSERTION(targetFrame.value() >= startFrame.value(),
"Target must at or be after data start.");
NS_ASSERTION(targetFrame.value() < startFrame.value() + audio->mFrames,
"Data must end after target.");
int64_t framesToPrune = targetFrame.value() - startFrame.value();
if (framesToPrune > audio->mFrames) {
// We've messed up somehow. Don't try to trim frames, the |frames|
// variable below will overflow.
NS_WARNING("Can't prune more frames that we have!");
break;
}
uint32_t frames = audio->mFrames - static_cast<uint32_t>(framesToPrune);
uint32_t channels = audio->mChannels;
nsAutoArrayPtr<AudioDataValue> audioData(new AudioDataValue[frames * channels]);
memcpy(audioData.get(),
audio->mAudioData.get() + (framesToPrune * channels),
frames * channels * sizeof(AudioDataValue));
CheckedInt64 duration = FramesToUsecs(frames, mInfo.mAudioRate);
if (!duration.isValid()) {
return NS_ERROR_FAILURE;
}
nsAutoPtr<AudioData> data(new AudioData(audio->mOffset,
aTarget,
duration.value(),
frames,
audioData.forget(),
channels));
delete AudioQueue().PopFront();
AudioQueue().PushFront(data.forget());
break;
}
}
return NS_OK;
}
} // namespace mozilla
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