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omx_video_decode_engine.cc
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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This class interacts with OmxCodec and the VideoDecoderImpl
// in the media pipeline.
//
// THREADING SEMANTICS
//
// This class is created by OmxVideoDecoder and lives on the thread
// that it lives. This class is given the message loop
// for the above thread. The OMX callbacks are guaranteed to be
// executed on the hosting message loop. Because of that there's no need
// for locking anywhere.
#include "media/video/omx_video_decode_engine.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "media/base/buffers.h"
namespace media {
OmxVideoDecodeEngine::OmxVideoDecodeEngine()
: width_(16),
height_(16),
message_loop_(NULL),
input_buffer_count_(0),
input_buffer_size_(0),
input_port_(0),
input_buffers_at_component_(0),
input_pending_request_(0),
input_queue_has_eos_(false),
input_has_fed_eos_(false),
input_port_flushed_(false),
output_buffer_count_(0),
output_buffer_size_(0),
output_port_(0),
output_buffers_at_component_(0),
output_pending_request_(0),
output_eos_(false),
output_port_flushed_(false),
il_state_(kIlNone),
expected_il_state_(kIlNone),
client_state_(kClientNotInitialized),
component_handle_(NULL),
need_free_input_buffers_(false),
need_free_output_buffers_(false),
flush_pending_(false),
output_frames_allocated_(false),
need_setup_output_port_(false) {
// TODO(wjia): change uses_egl_image_ to runtime setup
#if ENABLE_EGLIMAGE == 1
uses_egl_image_ = true;
DLOG(INFO) << "Uses egl image for output";
#else
uses_egl_image_ = false;
DLOG(INFO) << "Uses system memory for output";
#endif
}
OmxVideoDecodeEngine::~OmxVideoDecodeEngine() {
DCHECK(client_state_ == kClientNotInitialized ||
client_state_ == kClientStopped);
DCHECK_EQ(il_state_, kIlNone);
DCHECK_EQ(0u, input_buffers_.size());
DCHECK(free_input_buffers_.empty());
DCHECK(available_input_buffers_.empty());
DCHECK_EQ(0, input_buffers_at_component_);
DCHECK_EQ(0, output_buffers_at_component_);
DCHECK(output_frames_.empty());
}
template <typename T>
static void ResetParamHeader(const OmxVideoDecodeEngine& dec, T* param) {
memset(param, 0, sizeof(T));
param->nVersion.nVersion = dec.current_omx_spec_version();
param->nSize = sizeof(T);
}
void OmxVideoDecodeEngine::Initialize(
MessageLoop* message_loop,
VideoDecodeEngine::EventHandler* event_handler,
VideoDecodeContext* context,
const VideoCodecConfig& config) {
DCHECK_EQ(message_loop, MessageLoop::current());
message_loop_ = message_loop;
event_handler_ = event_handler;
width_ = config.width;
height_ = config.height;
// TODO(wjia): Find the right way to determine the codec type.
OmxConfigurator::MediaFormat input_format, output_format;
memset(&input_format, 0, sizeof(input_format));
memset(&output_format, 0, sizeof(output_format));
input_format.codec = OmxConfigurator::kCodecH264;
output_format.codec = OmxConfigurator::kCodecRaw;
configurator_.reset(
new OmxDecoderConfigurator(input_format, output_format));
// TODO(jiesun): We already ensure Initialize() is called in thread context,
// We should try to merge the following function into this function.
client_state_ = kClientInitializing;
InitializeTask();
VideoCodecInfo info;
// TODO(jiesun): ridiculous, we never fail initialization?
info.success = true;
info.provides_buffers = !uses_egl_image_;
info.stream_info.surface_type =
uses_egl_image_ ? VideoFrame::TYPE_GL_TEXTURE
: VideoFrame::TYPE_SYSTEM_MEMORY;
info.stream_info.surface_format = GetSurfaceFormat();
info.stream_info.surface_width = config.width;
info.stream_info.surface_height = config.height;
event_handler_->OnInitializeComplete(info);
}
// This method handles only input buffer, without coupling with output
void OmxVideoDecodeEngine::ConsumeVideoSample(scoped_refptr<Buffer> buffer) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK(!free_input_buffers_.empty());
DCHECK_GT(input_pending_request_, 0);
--input_pending_request_;
if (!CanAcceptInput()) {
FinishEmptyBuffer(buffer);
return;
}
if (buffer->IsEndOfStream()) {
DLOG(INFO) << "Input queue has EOS";
input_queue_has_eos_ = true;
}
OMX_BUFFERHEADERTYPE* omx_buffer = free_input_buffers_.front();
free_input_buffers_.pop();
// setup |omx_buffer|.
omx_buffer->pBuffer = const_cast<OMX_U8*>(buffer->GetData());
omx_buffer->nFilledLen = buffer->GetDataSize();
omx_buffer->nAllocLen = omx_buffer->nFilledLen;
if (input_queue_has_eos_)
omx_buffer->nFlags |= OMX_BUFFERFLAG_EOS;
else
omx_buffer->nFlags &= ~OMX_BUFFERFLAG_EOS;
omx_buffer->nTimeStamp = buffer->GetTimestamp().InMicroseconds();
omx_buffer->pAppPrivate = buffer.get();
buffer->AddRef();
available_input_buffers_.push(omx_buffer);
// Try to feed buffers into the decoder.
EmptyBufferTask();
if (flush_pending_ && input_pending_request_ == 0)
StartFlush();
}
void OmxVideoDecodeEngine::Flush() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(il_state_, kIlExecuting);
if (il_state_ != kIlExecuting) {
event_handler_->OnFlushComplete();
return;
}
client_state_ = kClientFlushing;
expected_il_state_ = kIlPause;
OnStateSetEventFunc = &OmxVideoDecodeEngine::PauseFromExecuting;
TransitionToState(OMX_StatePause);
}
void OmxVideoDecodeEngine::PauseFromExecuting(OMX_STATETYPE state) {
DCHECK_EQ(message_loop_, MessageLoop::current());
OnStateSetEventFunc = NULL;
il_state_ = kIlPause;
if (input_pending_request_ == 0)
StartFlush();
else
flush_pending_ = true;
}
void OmxVideoDecodeEngine::StartFlush() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(input_pending_request_, 0);
DLOG(INFO) << "StartFlush";
while (!available_input_buffers_.empty())
available_input_buffers_.pop();
flush_pending_ = false;
// Flush input port first.
OnFlushEventFunc = &OmxVideoDecodeEngine::PortFlushDone;
OMX_ERRORTYPE omxresult;
omxresult = OMX_SendCommand(component_handle_,
OMX_CommandFlush,
input_port_, 0);
}
bool OmxVideoDecodeEngine::InputPortFlushed() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(client_state_, kClientFlushing);
// Port flushed is defined by OpenMAX component had signal flush done and
// We had all buffers returned from demuxer and OpenMAX component.
int free_input_size = static_cast<int>(free_input_buffers_.size());
return input_port_flushed_ && free_input_size == input_buffer_count_;
}
bool OmxVideoDecodeEngine::OutputPortFlushed() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(client_state_, kClientFlushing);
// Port flushed is defined by OpenMAX component had signal flush done and
// We had all buffers returned from renderer and OpenMAX component.
return output_port_flushed_ && output_pending_request_ == 0;
}
void OmxVideoDecodeEngine::ComponentFlushDone() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DLOG(INFO) << "Component had been flushed!";
if (input_port_flushed_ && output_port_flushed_) {
event_handler_->OnFlushComplete();
input_port_flushed_ = false;
output_port_flushed_ = false;
}
}
void OmxVideoDecodeEngine::PortFlushDone(int port) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_NE(port, static_cast<int>(OMX_ALL));
if (port == input_port_) {
DLOG(INFO) << "Input Port had been flushed";
DCHECK_EQ(input_buffers_at_component_, 0);
input_port_flushed_ = true;
// Flush output port next.
OMX_ERRORTYPE omxresult;
omxresult = OMX_SendCommand(component_handle_,
OMX_CommandFlush,
output_port_, 0);
return;
}
if (port == output_port_) {
DLOG(INFO) << "Output Port had been flushed";
DCHECK_EQ(output_buffers_at_component_, 0);
output_port_flushed_ = true;
}
if (kClientFlushing == client_state_ &&
InputPortFlushed() && OutputPortFlushed())
ComponentFlushDone();
}
void OmxVideoDecodeEngine::Seek() {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK(client_state_ == kClientFlushing || // After a flush
client_state_ == kClientInitializing); // After an initialize.
if (client_state_ == kClientFlushing) {
InitialReadBuffer();
OnStateSetEventFunc = &OmxVideoDecodeEngine::DoneSetStateExecuting;
TransitionToState(OMX_StateExecuting);
}
event_handler_->OnSeekComplete();
}
VideoFrame::Format OmxVideoDecodeEngine::GetSurfaceFormat() const {
// TODO(jiesun): Both OmxHeaderType and EGLImage surface type could have
// different surface formats.
return uses_egl_image_ ? VideoFrame::RGBA : VideoFrame::YV12;
}
void OmxVideoDecodeEngine::Uninitialize() {
DCHECK_EQ(message_loop_, MessageLoop::current());
if (client_state_ == kClientError) {
OnStopDone();
return;
}
// TODO(wjia): add more state checking
if (kClientRunning == client_state_ || kClientFlushing == client_state_) {
client_state_ = kClientStopping;
DeinitFromExecuting(OMX_StateExecuting);
}
// TODO(wjia): When FillThisBuffer() is added, engine state should be
// kStopping here. engine state should be set to kStopped in OnStopDone();
// client_state_ = kClientStopping;
}
void OmxVideoDecodeEngine::FinishEmptyBuffer(scoped_refptr<Buffer> buffer) {
DCHECK_EQ(message_loop_, MessageLoop::current());
if (!input_queue_has_eos_) {
event_handler_->ProduceVideoSample(buffer);
++input_pending_request_;
}
}
void OmxVideoDecodeEngine::FinishFillBuffer(OMX_BUFFERHEADERTYPE* buffer) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK(buffer);
scoped_refptr<VideoFrame> frame;
frame = static_cast<VideoFrame*>(buffer->pAppPrivate);
// We should not flush buffer to renderer during decoder flushing if decoder
// provides the buffer allocator.
if (kClientFlushing == client_state_ && !uses_egl_image_) return;
frame->SetTimestamp(base::TimeDelta::FromMicroseconds(buffer->nTimeStamp));
frame->SetDuration(frame->GetTimestamp() - last_pts_);
last_pts_ = frame->GetTimestamp();
event_handler_->ConsumeVideoFrame(frame);
output_pending_request_--;
}
void OmxVideoDecodeEngine::OnStopDone() {
DCHECK_EQ(message_loop_, MessageLoop::current());
event_handler_->OnUninitializeComplete();
}
// Function sequence for initializing
void OmxVideoDecodeEngine::InitializeTask() {
DCHECK_EQ(il_state_, kIlNone);
il_state_ = kIlNone;
expected_il_state_ = kIlLoaded;
output_port_state_ = kPortEnabled;
if (!CreateComponent()) {
StopOnError();
return;
}
il_state_ = kIlLoaded;
// TODO(wjia): Disabling output port is to work around racing condition
// due to bug in some vendor's driver. But it hits another bug.
// So temporarily fall back to enabling output port. Still keep the code
// disabling output port here.
// No need to respond to this PortDisable event
// OnPortDisableEventFunc = NULL;
// ChangePort(OMX_CommandPortDisable, output_port_);
// if (kClientError == client_state_) {
// StopOnError();
// return;
// }
// output_port_state_ = kPortDisabled;
// Transition component to Idle state
OnStateSetEventFunc = &OmxVideoDecodeEngine::DoneSetStateIdle;
if (!TransitionToState(OMX_StateIdle)) {
StopOnError();
return;
}
expected_il_state_ = kIlIdle;
if (!AllocateInputBuffers()) {
LOG(ERROR) << "OMX_AllocateBuffer() Input buffer error";
client_state_ = kClientError;
StopOnError();
return;
}
if (!AllocateOutputBuffers()) {
LOG(ERROR) << "OMX_AllocateBuffer() Output buffer error";
client_state_ = kClientError;
return;
}
}
// Sequence of actions in this transition:
//
// 1. Initialize OMX (To be removed.)
// 2. Map role name to component name.
// 3. Get handle of the OMX component
// 4. Get the port information.
// 5. Set role for the component.
// 6. Input/output ports media format configuration.
// 7. Obtain the information about the input port.
// 8. Obtain the information about the output port.
bool OmxVideoDecodeEngine::CreateComponent() {
DCHECK_EQ(message_loop_, MessageLoop::current());
static OMX_CALLBACKTYPE callback = {
&OmxVideoDecodeEngine::EventHandler,
&OmxVideoDecodeEngine::EmptyBufferCallback,
&OmxVideoDecodeEngine::FillBufferCallback
};
// 1. Initialize the OpenMAX Core.
// TODO(hclam): move this out.
OMX_ERRORTYPE omxresult = OMX_Init();
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "Failed to init OpenMAX core";
client_state_ = kClientError;
return false;
}
// 2. Map role name to component name.
std::string role_name = configurator_->GetRoleName();
OMX_U32 roles = 0;
omxresult = OMX_GetComponentsOfRole(
const_cast<OMX_STRING>(role_name.c_str()),
&roles, 0);
if (omxresult != OMX_ErrorNone || roles == 0) {
LOG(ERROR) << "Unsupported Role: " << role_name.c_str();
client_state_ = kClientError;
return false;
}
const OMX_U32 kMaxRolePerComponent = 20;
CHECK(roles < kMaxRolePerComponent);
OMX_U8** component_names = new OMX_U8*[roles];
const int kMaxComponentNameLength = 256;
for (size_t i = 0; i < roles; ++i)
component_names[i] = new OMX_U8[kMaxComponentNameLength];
omxresult = OMX_GetComponentsOfRole(
const_cast<OMX_STRING>(role_name.c_str()),
&roles, component_names);
// Use first component only. Copy the name of the first component
// so that we could free the memory.
std::string component_name;
if (omxresult == OMX_ErrorNone)
component_name = reinterpret_cast<char*>(component_names[0]);
for (size_t i = 0; i < roles; ++i)
delete [] component_names[i];
delete [] component_names;
if (omxresult != OMX_ErrorNone || roles == 0) {
LOG(ERROR) << "Unsupported Role: " << role_name.c_str();
client_state_ = kClientError;
return false;
}
// 3. Get the handle to the component. After OMX_GetHandle(),
// the component is in loaded state.
OMX_STRING component = const_cast<OMX_STRING>(component_name.c_str());
omxresult = OMX_GetHandle(&component_handle_, component, this, &callback);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "Failed to Load the component: " << component;
client_state_ = kClientError;
return false;
}
// 4. Get the port information. This will obtain information about the
// number of ports and index of the first port.
OMX_PORT_PARAM_TYPE port_param;
ResetParamHeader(*this, &port_param);
omxresult = OMX_GetParameter(component_handle_, OMX_IndexParamVideoInit,
&port_param);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "Failed to get Port Param";
client_state_ = kClientError;
return false;
}
input_port_ = port_param.nStartPortNumber;
output_port_ = input_port_ + 1;
// 5. Set role for the component because our component could
// have multiple roles.
OMX_PARAM_COMPONENTROLETYPE role_type;
ResetParamHeader(*this, &role_type);
base::strlcpy(reinterpret_cast<char*>(role_type.cRole),
role_name.c_str(),
OMX_MAX_STRINGNAME_SIZE);
role_type.cRole[OMX_MAX_STRINGNAME_SIZE - 1] = '\0';
omxresult = OMX_SetParameter(component_handle_,
OMX_IndexParamStandardComponentRole,
&role_type);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "Failed to Set Role";
client_state_ = kClientError;
return false;
}
// 6. Input/output ports media format configuration.
if (!ConfigureIOPorts()) {
LOG(ERROR) << "Media format configurations failed";
client_state_ = kClientError;
return false;
}
// 7. Obtain the information about the input port.
// This will have the new mini buffer count in |port_format.nBufferCountMin|.
// Save this value to input_buf_count.
OMX_PARAM_PORTDEFINITIONTYPE port_format;
ResetParamHeader(*this, &port_format);
port_format.nPortIndex = input_port_;
omxresult = OMX_GetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&port_format);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "GetParameter(OMX_IndexParamPortDefinition) failed";
client_state_ = kClientError;
return false;
}
if (OMX_DirInput != port_format.eDir) {
LOG(ERROR) << "Expected input port";
client_state_ = kClientError;
return false;
}
input_buffer_count_ = port_format.nBufferCountActual;
input_buffer_size_ = port_format.nBufferSize;
// 8. Obtain the information about the output port.
ResetParamHeader(*this, &port_format);
port_format.nPortIndex = output_port_;
omxresult = OMX_GetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&port_format);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "GetParameter(OMX_IndexParamPortDefinition) failed";
client_state_ = kClientError;
return false;
}
if (OMX_DirOutput != port_format.eDir) {
LOG(ERROR) << "Expect Output Port";
client_state_ = kClientError;
return false;
}
// TODO(wjia): use same buffer recycling for EGLImage and system memory.
// Override buffer count when EGLImage is used.
if (uses_egl_image_) {
// TODO(wjia): remove hard-coded value
port_format.nBufferCountActual = port_format.nBufferCountMin =
output_buffer_count_ = 4;
omxresult = OMX_SetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&port_format);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "SetParameter(OMX_IndexParamPortDefinition) failed";
client_state_ = kClientError;
return false;
}
} else {
output_buffer_count_ = port_format.nBufferCountActual;
}
output_buffer_size_ = port_format.nBufferSize;
return true;
}
// Event callback during initialization to handle DoneStateSet to idle
void OmxVideoDecodeEngine::DoneSetStateIdle(OMX_STATETYPE state) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(client_state_, kClientInitializing);
DCHECK_EQ(OMX_StateIdle, state);
DLOG(INFO) << "OMX video decode engine is in Idle";
il_state_ = kIlIdle;
// start reading bit stream
InitialReadBuffer();
OnStateSetEventFunc = &OmxVideoDecodeEngine::DoneSetStateExecuting;
if (!TransitionToState(OMX_StateExecuting)) {
StopOnError();
return;
}
expected_il_state_ = kIlExecuting;
}
// Event callback during initialization to handle DoneStateSet to executing
void OmxVideoDecodeEngine::DoneSetStateExecuting(OMX_STATETYPE state) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK(client_state_ == kClientInitializing ||
client_state_ == kClientFlushing);
DCHECK_EQ(OMX_StateExecuting, state);
DLOG(INFO) << "OMX video decode engine is in Executing";
il_state_ = kIlExecuting;
client_state_ = kClientRunning;
OnStateSetEventFunc = NULL;
EmptyBufferTask();
InitialFillBuffer();
if (kClientError == client_state_) {
StopOnError();
return;
}
}
// Function for receiving output buffers. Hookup for buffer recycling
// and outside allocator.
void OmxVideoDecodeEngine::ProduceVideoFrame(
scoped_refptr<VideoFrame> video_frame) {
DCHECK(video_frame.get() && !video_frame->IsEndOfStream());
output_pending_request_++;
if (!CanAcceptOutput()) {
if (uses_egl_image_) { // return it to owner.
output_pending_request_--;
event_handler_->ConsumeVideoFrame(video_frame);
}
return;
}
OMX_BUFFERHEADERTYPE* omx_buffer = FindOmxBuffer(video_frame);
if (omx_buffer) {
if (kClientRunning == client_state_) {
SendOutputBufferToComponent(omx_buffer);
} else if (kClientFlushing == client_state_) {
if (uses_egl_image_) { // return it to owner.
output_pending_request_--;
event_handler_->ConsumeVideoFrame(video_frame);
}
if (InputPortFlushed() && OutputPortFlushed())
ComponentFlushDone();
}
} else {
DCHECK(!output_frames_allocated_);
DCHECK(uses_egl_image_);
output_frames_.push_back(std::make_pair(video_frame,
static_cast<OMX_BUFFERHEADERTYPE*>(NULL)));
}
DCHECK(static_cast<int>(output_frames_.size()) <= output_buffer_count_);
if ((!output_frames_allocated_) &&
static_cast<int>(output_frames_.size()) == output_buffer_count_) {
output_frames_allocated_ = true;
if (need_setup_output_port_) {
SetupOutputPort();
}
}
if (kClientError == client_state_) {
StopOnError();
return;
}
}
// Reconfigure port
void OmxVideoDecodeEngine::OnPortSettingsChangedRun(int port,
OMX_INDEXTYPE index) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(client_state_, kClientRunning);
DCHECK_EQ(port, output_port_);
// TODO(wjia): add buffer negotiation between decoder and renderer.
if (uses_egl_image_) {
DLOG(INFO) << "Port settings are changed";
return;
}
// TODO(wjia): remove this checking when all vendors observe same spec.
if (index > OMX_IndexComponentStartUnused) {
if (index != OMX_IndexParamPortDefinition)
return;
}
OMX_PARAM_PORTDEFINITIONTYPE port_format;
ResetParamHeader(*this, &port_format);
port_format.nPortIndex = output_port_;
OMX_ERRORTYPE omxresult;
omxresult = OMX_GetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&port_format);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "GetParameter(OMX_IndexParamPortDefinition) failed";
client_state_ = kClientError;
StopOnError();
return;
}
if (OMX_DirOutput != port_format.eDir) {
LOG(ERROR) << "Expected Output Port";
client_state_ = kClientError;
StopOnError();
return;
}
// Update the output format.
OmxConfigurator::MediaFormat output_format;
output_format.video_header.height = port_format.format.video.nFrameHeight;
output_format.video_header.width = port_format.format.video.nFrameWidth;
output_format.video_header.stride = port_format.format.video.nStride;
output_buffer_count_ = port_format.nBufferCountActual;
output_buffer_size_ = port_format.nBufferSize;
if (kPortEnabled == output_port_state_) {
output_port_state_ = kPortDisabling;
OnPortDisableEventFunc = &OmxVideoDecodeEngine::OnPortDisableEventRun;
ChangePort(OMX_CommandPortDisable, output_port_);
if (kClientError == client_state_) {
StopOnError();
return;
}
FreeOutputBuffers();
} else {
OnPortDisableEventRun(output_port_);
}
}
// Post output port disabling
void OmxVideoDecodeEngine::OnPortDisableEventRun(int port) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(client_state_, kClientRunning);
DCHECK_EQ(port, output_port_);
output_port_state_ = kPortDisabled;
// make sure all eglimages are available before enabling output port
if (output_frames_allocated_ || !uses_egl_image_) {
SetupOutputPort();
if (kClientError == client_state_) {
StopOnError();
return;
}
} else {
need_setup_output_port_ = true;
}
}
// Enable output port and allocate buffers correspondingly
void OmxVideoDecodeEngine::SetupOutputPort() {
DCHECK_EQ(message_loop_, MessageLoop::current());
need_setup_output_port_ = false;
// Enable output port when necessary since the port could be waiting for
// buffers, instead of port reconfiguration.
if (kPortEnabled != output_port_state_) {
output_port_state_ = kPortEnabling;
OnPortEnableEventFunc = &OmxVideoDecodeEngine::OnPortEnableEventRun;
ChangePort(OMX_CommandPortEnable, output_port_);
if (kClientError == client_state_) {
return;
}
}
// TODO(wjia): add state checking
// Update the ports in buffer if necessary
if (!AllocateOutputBuffers()) {
LOG(ERROR) << "OMX_AllocateBuffer() Output buffer error";
client_state_ = kClientError;
return;
}
}
// Post output port enabling
void OmxVideoDecodeEngine::OnPortEnableEventRun(int port) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(port, output_port_);
DCHECK_EQ(client_state_, kClientRunning);
output_port_state_ = kPortEnabled;
last_pts_ = base::TimeDelta::FromMilliseconds(0);
OnPortEnableEventFunc = NULL;
InitialFillBuffer();
if (kClientError == client_state_) {
StopOnError();
return;
}
}
void OmxVideoDecodeEngine::DeinitFromExecuting(OMX_STATETYPE state) {
DCHECK_EQ(state, OMX_StateExecuting);
DLOG(INFO) << "Deinit from Executing";
OnStateSetEventFunc = &OmxVideoDecodeEngine::DeinitFromIdle;
TransitionToState(OMX_StateIdle);
expected_il_state_ = kIlIdle;
}
void OmxVideoDecodeEngine::DeinitFromIdle(OMX_STATETYPE state) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(state, OMX_StateIdle);
DLOG(INFO) << "Deinit from Idle";
il_state_ = kIlIdle;
OnStateSetEventFunc = &OmxVideoDecodeEngine::DeinitFromLoaded;
TransitionToState(OMX_StateLoaded);
expected_il_state_ = kIlLoaded;
if (!input_buffers_at_component_)
FreeInputBuffers();
else
need_free_input_buffers_ = true;
if (!output_buffers_at_component_)
FreeOutputBuffers();
else
need_free_output_buffers_ = true;
}
void OmxVideoDecodeEngine::DeinitFromLoaded(OMX_STATETYPE state) {
DCHECK_EQ(message_loop_, MessageLoop::current());
DCHECK_EQ(state, OMX_StateLoaded);
DLOG(INFO) << "Deinit from Loaded";
il_state_ = kIlLoaded;
if (component_handle_) {
OMX_ERRORTYPE result = OMX_FreeHandle(component_handle_);
if (result != OMX_ErrorNone)
LOG(ERROR) << "OMX_FreeHandle() error. Error code: " << result;
component_handle_ = NULL;
}
il_state_ = expected_il_state_ = kIlNone;
// kClientStopped is different from kClientNotInitialized. The former can't
// accept output buffers, while the latter can.
client_state_ = kClientStopped;
OMX_Deinit();
OnStopDone();
}
void OmxVideoDecodeEngine::StopOnError() {
DCHECK_EQ(message_loop_, MessageLoop::current());
client_state_ = kClientStopping;
if (kIlExecuting == expected_il_state_) {
DeinitFromExecuting(OMX_StateExecuting);
} else if (kIlIdle == expected_il_state_) {
DeinitFromIdle(OMX_StateIdle);
} else if (kIlLoaded == expected_il_state_) {
DeinitFromLoaded(OMX_StateLoaded);
} else if (kIlPause == expected_il_state_) {
// TODO(jiesun): Make sure this works.
DeinitFromExecuting(OMX_StateExecuting);
} else {
NOTREACHED();
}
}
// Call OMX_UseBuffer() to avoid buffer copying when
// OMX_EmptyThisBuffer() is called
bool OmxVideoDecodeEngine::AllocateInputBuffers() {
DCHECK_EQ(message_loop_, MessageLoop::current());
uint8* data = new uint8[input_buffer_size_];
scoped_array<uint8> data_deleter(data);
for (int i = 0; i < input_buffer_count_; ++i) {
OMX_BUFFERHEADERTYPE* buffer;
OMX_ERRORTYPE error =
OMX_UseBuffer(component_handle_, &buffer, input_port_,
this, input_buffer_size_, data);
if (error != OMX_ErrorNone)
return false;
buffer->nInputPortIndex = input_port_;
buffer->nOffset = 0;
buffer->nFlags = 0;
input_buffers_.push_back(buffer);
free_input_buffers_.push(buffer);
}
return true;
}
// This method handles EGLImage and internal buffer cases. Any external
// allocation case is similar to EGLImage
bool OmxVideoDecodeEngine::AllocateOutputBuffers() {
DCHECK_EQ(message_loop_, MessageLoop::current());
if (uses_egl_image_ && !output_frames_allocated_) {
DLOG(INFO) << "Output frames are not allocated yet";
need_setup_output_port_ = true;
return true;
}
for (int i = 0; i < output_buffer_count_; ++i) {
OMX_BUFFERHEADERTYPE* buffer;
scoped_refptr<VideoFrame> video_frame;
OMX_ERRORTYPE error;
if (uses_egl_image_) {
OutputFrame output_frame = output_frames_[i];
video_frame = output_frame.first;
DCHECK(!output_frame.second);
error = OMX_UseEGLImage(component_handle_, &buffer, output_port_,
video_frame.get(), video_frame->private_buffer());
if (error != OMX_ErrorNone)
return false;
output_frames_[i].second = buffer;
} else {
error = OMX_AllocateBuffer(component_handle_, &buffer, output_port_,
NULL, output_buffer_size_);
if (error != OMX_ErrorNone)
return false;
video_frame = CreateOmxBufferVideoFrame(buffer);
output_frames_.push_back(std::make_pair(video_frame, buffer));
buffer->pAppPrivate = video_frame.get();
}
}
return true;
}
scoped_refptr<VideoFrame> OmxVideoDecodeEngine::CreateOmxBufferVideoFrame(
OMX_BUFFERHEADERTYPE* omx_buffer) {
scoped_refptr<VideoFrame> video_frame;
uint8* data[VideoFrame::kMaxPlanes];
int32 strides[VideoFrame::kMaxPlanes];
memset(data, 0, sizeof(data));
memset(strides, 0, sizeof(strides));
// TODO(jiesun): chroma format 4:2:0 only and 3 planes.
data[0] = omx_buffer->pBuffer;
data[1] = data[0] + width_ * height_;
data[2] = data[1] + width_ * height_ / 4;
strides[0] = width_;
strides[1] = strides[2] = width_ >> 1;
VideoFrame::CreateFrameExternal(
VideoFrame::TYPE_SYSTEM_MEMORY,
VideoFrame::YV12,
width_, height_, 3,
data, strides,
StreamSample::kInvalidTimestamp,
StreamSample::kInvalidTimestamp,
omx_buffer,
&video_frame);
return video_frame;
}
void OmxVideoDecodeEngine::FreeInputBuffers() {
DCHECK_EQ(message_loop_, MessageLoop::current());
// Empty available buffer queue.
while (!free_input_buffers_.empty()) {
free_input_buffers_.pop();
}
while (!available_input_buffers_.empty()) {
OMX_BUFFERHEADERTYPE* omx_buffer = available_input_buffers_.front();
available_input_buffers_.pop();
Buffer* stored_buffer = static_cast<Buffer*>(omx_buffer->pAppPrivate);
FinishEmptyBuffer(stored_buffer);
stored_buffer->Release();
}
// Calls to OMX to free buffers.
for (size_t i = 0; i < input_buffers_.size(); ++i)
OMX_FreeBuffer(component_handle_, input_port_, input_buffers_[i]);
input_buffers_.clear();
need_free_input_buffers_ = false;
}
void OmxVideoDecodeEngine::FreeOutputBuffers() {
DCHECK_EQ(message_loop_, MessageLoop::current());
// Calls to OMX to free buffers.
for (size_t i = 0; i < output_frames_.size(); ++i) {
OMX_BUFFERHEADERTYPE* omx_buffer = output_frames_[i].second;
CHECK(omx_buffer);
OMX_FreeBuffer(component_handle_, output_port_, omx_buffer);
}
output_frames_.clear();
output_frames_allocated_ = false;
need_free_output_buffers_ = false;
}
bool OmxVideoDecodeEngine::ConfigureIOPorts() {
OMX_PARAM_PORTDEFINITIONTYPE input_port_def, output_port_def;
OMX_ERRORTYPE omxresult = OMX_ErrorNone;
// Get default input port definition.
ResetParamHeader(*this, &input_port_def);
input_port_def.nPortIndex = input_port_;
omxresult = OMX_GetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&input_port_def);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "GetParameter(OMX_IndexParamPortDefinition) "
<< "for input port failed";
return false;
}
if (OMX_DirInput != input_port_def.eDir) {
LOG(ERROR) << "Expected Input Port";
return false;
}
// Get default output port definition.
ResetParamHeader(*this, &output_port_def);
output_port_def.nPortIndex = output_port_;
omxresult = OMX_GetParameter(component_handle_,
OMX_IndexParamPortDefinition,
&output_port_def);
if (omxresult != OMX_ErrorNone) {
LOG(ERROR) << "GetParameter(OMX_IndexParamPortDefinition) "