gecko-dev/dom/media/gmp/GMPVideoDecoderParent.cpp
Ehsan Akhgari de3498d101 Bug 1116358 - Directly call Release() on |this| when closing a GMP encoder/decoder proxies; r=cpearce
This is needed in order to avoid calling Release() on a smart pointer.
2014-12-30 14:53:12 -05:00

367 lines
8.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "GMPVideoDecoderParent.h"
#include "prlog.h"
#include "mozilla/unused.h"
#include "nsAutoRef.h"
#include "nsThreadUtils.h"
#include "GMPVideoEncodedFrameImpl.h"
#include "GMPVideoi420FrameImpl.h"
#include "GMPParent.h"
#include "GMPMessageUtils.h"
#include "mozilla/gmp/GMPTypes.h"
namespace mozilla {
#ifdef LOG
#undef LOG
#endif
#ifdef PR_LOGGING
extern PRLogModuleInfo* GetGMPLog();
#define LOGD(msg) PR_LOG(GetGMPLog(), PR_LOG_DEBUG, msg)
#define LOG(level, msg) PR_LOG(GetGMPLog(), (level), msg)
#else
#define LOGD(msg)
#define LOG(level, msg)
#endif
namespace gmp {
// States:
// Initial: mIsOpen == false
// on InitDecode success -> Open
// on Shutdown -> Dead
// Open: mIsOpen == true
// on Close -> Dead
// on ActorDestroy -> Dead
// on Shutdown -> Dead
// Dead: mIsOpen == false
GMPVideoDecoderParent::GMPVideoDecoderParent(GMPParent* aPlugin)
: GMPSharedMemManager(aPlugin)
, mIsOpen(false)
, mShuttingDown(false)
, mPlugin(aPlugin)
, mCallback(nullptr)
, mVideoHost(MOZ_THIS_IN_INITIALIZER_LIST())
{
MOZ_ASSERT(mPlugin);
}
GMPVideoDecoderParent::~GMPVideoDecoderParent()
{
}
GMPVideoHostImpl&
GMPVideoDecoderParent::Host()
{
return mVideoHost;
}
// Note: may be called via Terminated()
void
GMPVideoDecoderParent::Close()
{
LOGD(("%s: %p", __FUNCTION__, this));
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
// Consumer is done with us; we can shut down. No more callbacks should
// be made to mCallback. Note: do this before Shutdown()!
mCallback = nullptr;
// Let Shutdown mark us as dead so it knows if we had been alive
// In case this is the last reference
nsRefPtr<GMPVideoDecoderParent> kungfudeathgrip(this);
Release();
Shutdown();
}
nsresult
GMPVideoDecoderParent::InitDecode(const GMPVideoCodec& aCodecSettings,
const nsTArray<uint8_t>& aCodecSpecific,
GMPVideoDecoderCallbackProxy* aCallback,
int32_t aCoreCount)
{
if (mIsOpen) {
NS_WARNING("Trying to re-init an in-use GMP video decoder!");
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
if (!aCallback) {
return NS_ERROR_FAILURE;
}
mCallback = aCallback;
if (!SendInitDecode(aCodecSettings, aCodecSpecific, aCoreCount)) {
return NS_ERROR_FAILURE;
}
mIsOpen = true;
// Async IPC, we don't have access to a return value.
return NS_OK;
}
nsresult
GMPVideoDecoderParent::Decode(UniquePtr<GMPVideoEncodedFrame> aInputFrame,
bool aMissingFrames,
const nsTArray<uint8_t>& aCodecSpecificInfo,
int64_t aRenderTimeMs)
{
if (!mIsOpen) {
NS_WARNING("Trying to use an dead GMP video decoder");
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
UniquePtr<GMPVideoEncodedFrameImpl> inputFrameImpl(
static_cast<GMPVideoEncodedFrameImpl*>(aInputFrame.release()));
// Very rough kill-switch if the plugin stops processing. If it's merely
// hung and continues, we'll come back to life eventually.
// 3* is because we're using 3 buffers per frame for i420 data for now.
if ((NumInUse(GMPSharedMem::kGMPFrameData) > 3*GMPSharedMem::kGMPBufLimit) ||
(NumInUse(GMPSharedMem::kGMPEncodedData) > GMPSharedMem::kGMPBufLimit)) {
return NS_ERROR_FAILURE;
}
GMPVideoEncodedFrameData frameData;
inputFrameImpl->RelinquishFrameData(frameData);
if (!SendDecode(frameData,
aMissingFrames,
aCodecSpecificInfo,
aRenderTimeMs)) {
return NS_ERROR_FAILURE;
}
// Async IPC, we don't have access to a return value.
return NS_OK;
}
nsresult
GMPVideoDecoderParent::Reset()
{
if (!mIsOpen) {
NS_WARNING("Trying to use an dead GMP video decoder");
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
if (!SendReset()) {
return NS_ERROR_FAILURE;
}
// Async IPC, we don't have access to a return value.
return NS_OK;
}
nsresult
GMPVideoDecoderParent::Drain()
{
if (!mIsOpen) {
NS_WARNING("Trying to use an dead GMP video decoder");
return NS_ERROR_FAILURE;
}
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
if (!SendDrain()) {
return NS_ERROR_FAILURE;
}
// Async IPC, we don't have access to a return value.
return NS_OK;
}
// Note: Consider keeping ActorDestroy sync'd up when making changes here.
nsresult
GMPVideoDecoderParent::Shutdown()
{
LOGD(("%s: %p", __FUNCTION__, this));
MOZ_ASSERT(mPlugin->GMPThread() == NS_GetCurrentThread());
if (mShuttingDown) {
return NS_OK;
}
mShuttingDown = true;
// Notify client we're gone! Won't occur after Close()
if (mCallback) {
mCallback->Terminated();
mCallback = nullptr;
}
mVideoHost.DoneWithAPI();
mIsOpen = false;
unused << SendDecodingComplete();
return NS_OK;
}
// Note: Keep this sync'd up with Shutdown
void
GMPVideoDecoderParent::ActorDestroy(ActorDestroyReason aWhy)
{
mIsOpen = false;
if (mCallback) {
// May call Close() (and Shutdown()) immediately or with a delay
mCallback->Terminated();
mCallback = nullptr;
}
if (mPlugin) {
// Ignore any return code. It is OK for this to fail without killing the process.
mPlugin->VideoDecoderDestroyed(this);
mPlugin = nullptr;
}
mVideoHost.ActorDestroyed();
}
bool
GMPVideoDecoderParent::RecvDecoded(const GMPVideoi420FrameData& aDecodedFrame)
{
if (!mCallback) {
return false;
}
if (!GMPVideoi420FrameImpl::CheckFrameData(aDecodedFrame)) {
LOG(PR_LOG_ERROR, ("%s: Decoded frame corrupt, ignoring", __FUNCTION__));
return false;
}
auto f = new GMPVideoi420FrameImpl(aDecodedFrame, &mVideoHost);
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->Decoded(f);
return true;
}
bool
GMPVideoDecoderParent::RecvReceivedDecodedReferenceFrame(const uint64_t& aPictureId)
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->ReceivedDecodedReferenceFrame(aPictureId);
return true;
}
bool
GMPVideoDecoderParent::RecvReceivedDecodedFrame(const uint64_t& aPictureId)
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->ReceivedDecodedFrame(aPictureId);
return true;
}
bool
GMPVideoDecoderParent::RecvInputDataExhausted()
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->InputDataExhausted();
return true;
}
bool
GMPVideoDecoderParent::RecvDrainComplete()
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->DrainComplete();
return true;
}
bool
GMPVideoDecoderParent::RecvResetComplete()
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->ResetComplete();
return true;
}
bool
GMPVideoDecoderParent::RecvError(const GMPErr& aError)
{
if (!mCallback) {
return false;
}
// Ignore any return code. It is OK for this to fail without killing the process.
mCallback->Error(aError);
return true;
}
bool
GMPVideoDecoderParent::RecvParentShmemForPool(Shmem& aEncodedBuffer)
{
if (aEncodedBuffer.IsWritable()) {
mVideoHost.SharedMemMgr()->MgrDeallocShmem(GMPSharedMem::kGMPEncodedData,
aEncodedBuffer);
}
return true;
}
bool
GMPVideoDecoderParent::AnswerNeedShmem(const uint32_t& aFrameBufferSize,
Shmem* aMem)
{
ipc::Shmem mem;
if (!mVideoHost.SharedMemMgr()->MgrAllocShmem(GMPSharedMem::kGMPFrameData,
aFrameBufferSize,
ipc::SharedMemory::TYPE_BASIC, &mem))
{
LOG(PR_LOG_ERROR, ("%s: Failed to get a shared mem buffer for Child! size %u",
__FUNCTION__, aFrameBufferSize));
return false;
}
*aMem = mem;
mem = ipc::Shmem();
return true;
}
bool
GMPVideoDecoderParent::Recv__delete__()
{
if (mPlugin) {
// Ignore any return code. It is OK for this to fail without killing the process.
mPlugin->VideoDecoderDestroyed(this);
mPlugin = nullptr;
}
return true;
}
} // namespace gmp
} // namespace mozilla