| // Copyright 2015 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. |
| |
| #include "content/renderer/pepper/pepper_audio_encoder_host.h" |
| |
| #include <stddef.h> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/memory/shared_memory.h" |
| #include "base/stl_util.h" |
| #include "content/public/renderer/renderer_ppapi_host.h" |
| #include "content/renderer/pepper/host_globals.h" |
| #include "content/renderer/render_thread_impl.h" |
| #include "media/base/bind_to_current_loop.h" |
| #include "ppapi/c/pp_codecs.h" |
| #include "ppapi/c/pp_errors.h" |
| #include "ppapi/host/dispatch_host_message.h" |
| #include "ppapi/host/ppapi_host.h" |
| #include "ppapi/proxy/ppapi_messages.h" |
| #include "ppapi/shared_impl/media_stream_buffer.h" |
| #include "third_party/opus/src/include/opus.h" |
| |
| using ppapi::proxy::SerializedHandle; |
| |
| namespace content { |
| |
| namespace { |
| |
| // Buffer up to 150ms (15 x 10ms per frame). |
| const uint32_t kDefaultNumberOfAudioBuffers = 15; |
| |
| bool PP_HardwareAccelerationCompatibleAudio(bool accelerated, |
| PP_HardwareAcceleration requested) { |
| switch (requested) { |
| case PP_HARDWAREACCELERATION_ONLY: |
| return accelerated; |
| case PP_HARDWAREACCELERATION_NONE: |
| return !accelerated; |
| case PP_HARDWAREACCELERATION_WITHFALLBACK: |
| return true; |
| // No default case, to catch unhandled PP_HardwareAcceleration values. |
| } |
| return false; |
| } |
| |
| } // namespace |
| |
| // This class should be constructed and initialized on the main renderer |
| // thread, used and destructed on the media thread. |
| class PepperAudioEncoderHost::AudioEncoderImpl { |
| public: |
| // Callback used to signal encoded data. If |size| is negative, an error |
| // occurred. |
| using BitstreamBufferReadyCB = base::OnceCallback<void(int32_t size)>; |
| |
| AudioEncoderImpl(); |
| ~AudioEncoderImpl(); |
| |
| // Used on the renderer thread. |
| static std::vector<PP_AudioProfileDescription> GetSupportedProfiles(); |
| bool Initialize(const ppapi::proxy::PPB_AudioEncodeParameters& parameters); |
| int32_t GetNumberOfSamplesPerFrame(); |
| |
| // Used on the media thread. |
| void Encode(uint8_t* input_data, |
| size_t input_size, |
| uint8_t* output_data, |
| size_t output_size, |
| BitstreamBufferReadyCB callback); |
| void RequestBitrateChange(uint32_t bitrate); |
| |
| private: |
| std::unique_ptr<uint8_t[]> encoder_memory_; |
| OpusEncoder* opus_encoder_; |
| |
| // Initialization parameters, only valid if |encoder_memory_| is not |
| // nullptr. |
| ppapi::proxy::PPB_AudioEncodeParameters parameters_; |
| |
| DISALLOW_COPY_AND_ASSIGN(AudioEncoderImpl); |
| }; |
| |
| PepperAudioEncoderHost::AudioEncoderImpl::AudioEncoderImpl() |
| : opus_encoder_(nullptr) {} |
| |
| PepperAudioEncoderHost::AudioEncoderImpl::~AudioEncoderImpl() {} |
| |
| // static |
| std::vector<PP_AudioProfileDescription> |
| PepperAudioEncoderHost::AudioEncoderImpl::GetSupportedProfiles() { |
| std::vector<PP_AudioProfileDescription> profiles; |
| static const uint32_t sampling_rates[] = {8000, 12000, 16000, 24000, 48000}; |
| |
| for (uint32_t i = 0; i < base::size(sampling_rates); ++i) { |
| PP_AudioProfileDescription profile; |
| profile.profile = PP_AUDIOPROFILE_OPUS; |
| profile.max_channels = 2; |
| profile.sample_size = PP_AUDIOBUFFER_SAMPLESIZE_16_BITS; |
| profile.sample_rate = sampling_rates[i]; |
| profile.hardware_accelerated = PP_FALSE; |
| profiles.push_back(profile); |
| } |
| return profiles; |
| } |
| |
| bool PepperAudioEncoderHost::AudioEncoderImpl::Initialize( |
| const ppapi::proxy::PPB_AudioEncodeParameters& parameters) { |
| if (parameters.output_profile != PP_AUDIOPROFILE_OPUS) |
| return false; |
| |
| DCHECK(!encoder_memory_); |
| |
| int32_t encoder_size = opus_encoder_get_size(parameters.channels); |
| if (encoder_size < 1) |
| return false; |
| |
| std::unique_ptr<uint8_t[]> encoder_memory(new uint8_t[encoder_size]); |
| opus_encoder_ = reinterpret_cast<OpusEncoder*>(encoder_memory.get()); |
| |
| if (opus_encoder_init(opus_encoder_, parameters.input_sample_rate, |
| parameters.channels, OPUS_APPLICATION_AUDIO) != OPUS_OK) |
| return false; |
| |
| if (opus_encoder_ctl(opus_encoder_, |
| OPUS_SET_BITRATE(parameters.initial_bitrate <= 0 |
| ? OPUS_AUTO |
| : parameters.initial_bitrate)) != |
| OPUS_OK) |
| return false; |
| |
| encoder_memory_.swap(encoder_memory); |
| parameters_ = parameters; |
| |
| return true; |
| } |
| |
| int32_t PepperAudioEncoderHost::AudioEncoderImpl::GetNumberOfSamplesPerFrame() { |
| DCHECK(encoder_memory_); |
| // Opus supports 2.5, 5, 10, 20, 40 or 60ms audio frames. We take |
| // 10ms by default. |
| return parameters_.input_sample_rate / 100; |
| } |
| |
| void PepperAudioEncoderHost::AudioEncoderImpl::Encode( |
| uint8_t* input_data, |
| size_t input_size, |
| uint8_t* output_data, |
| size_t output_size, |
| BitstreamBufferReadyCB callback) { |
| DCHECK(encoder_memory_); |
| int32_t result = opus_encode( |
| opus_encoder_, reinterpret_cast<opus_int16*>(input_data), |
| (input_size / parameters_.channels) / parameters_.input_sample_size, |
| output_data, output_size); |
| std::move(callback).Run(result); |
| } |
| |
| void PepperAudioEncoderHost::AudioEncoderImpl::RequestBitrateChange( |
| uint32_t bitrate) { |
| DCHECK(encoder_memory_); |
| opus_encoder_ctl(opus_encoder_, OPUS_SET_BITRATE(bitrate)); |
| } |
| |
| PepperAudioEncoderHost::PepperAudioEncoderHost(RendererPpapiHost* host, |
| PP_Instance instance, |
| PP_Resource resource) |
| : ResourceHost(host->GetPpapiHost(), instance, resource), |
| renderer_ppapi_host_(host), |
| initialized_(false), |
| encoder_last_error_(PP_ERROR_FAILED), |
| media_task_runner_(RenderThreadImpl::current() |
| ->GetMediaThreadTaskRunner()), |
| weak_ptr_factory_(this) {} |
| |
| PepperAudioEncoderHost::~PepperAudioEncoderHost() { |
| Close(); |
| } |
| |
| int32_t PepperAudioEncoderHost::OnResourceMessageReceived( |
| const IPC::Message& msg, |
| ppapi::host::HostMessageContext* context) { |
| PPAPI_BEGIN_MESSAGE_MAP(PepperAudioEncoderHost, msg) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL_0( |
| PpapiHostMsg_AudioEncoder_GetSupportedProfiles, |
| OnHostMsgGetSupportedProfiles) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioEncoder_Initialize, |
| OnHostMsgInitialize) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL(PpapiHostMsg_AudioEncoder_Encode, |
| OnHostMsgEncode) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL( |
| PpapiHostMsg_AudioEncoder_RecycleBitstreamBuffer, |
| OnHostMsgRecycleBitstreamBuffer) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL( |
| PpapiHostMsg_AudioEncoder_RequestBitrateChange, |
| OnHostMsgRequestBitrateChange) |
| PPAPI_DISPATCH_HOST_RESOURCE_CALL_0(PpapiHostMsg_AudioEncoder_Close, |
| OnHostMsgClose) |
| PPAPI_END_MESSAGE_MAP() |
| return PP_ERROR_FAILED; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgGetSupportedProfiles( |
| ppapi::host::HostMessageContext* context) { |
| std::vector<PP_AudioProfileDescription> profiles; |
| GetSupportedProfiles(&profiles); |
| |
| host()->SendReply( |
| context->MakeReplyMessageContext(), |
| PpapiPluginMsg_AudioEncoder_GetSupportedProfilesReply(profiles)); |
| |
| return PP_OK_COMPLETIONPENDING; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgInitialize( |
| ppapi::host::HostMessageContext* context, |
| const ppapi::proxy::PPB_AudioEncodeParameters& parameters) { |
| if (initialized_) |
| return PP_ERROR_FAILED; |
| |
| if (!IsInitializationValid(parameters)) |
| return PP_ERROR_NOTSUPPORTED; |
| |
| std::unique_ptr<AudioEncoderImpl> encoder(new AudioEncoderImpl); |
| if (!encoder->Initialize(parameters)) |
| return PP_ERROR_FAILED; |
| if (!AllocateBuffers(parameters, encoder->GetNumberOfSamplesPerFrame())) |
| return PP_ERROR_NOMEMORY; |
| |
| initialized_ = true; |
| encoder_last_error_ = PP_OK; |
| encoder_.swap(encoder); |
| |
| ppapi::host::ReplyMessageContext reply_context = |
| context->MakeReplyMessageContext(); |
| reply_context.params.AppendHandle( |
| SerializedHandle(renderer_ppapi_host_->ShareSharedMemoryHandleWithRemote( |
| audio_buffer_manager_->shm()->handle()), |
| audio_buffer_manager_->shm()->mapped_size())); |
| reply_context.params.AppendHandle( |
| SerializedHandle(renderer_ppapi_host_->ShareSharedMemoryHandleWithRemote( |
| bitstream_buffer_manager_->shm()->handle()), |
| bitstream_buffer_manager_->shm()->mapped_size())); |
| host()->SendReply(reply_context, |
| PpapiPluginMsg_AudioEncoder_InitializeReply( |
| encoder_->GetNumberOfSamplesPerFrame(), |
| audio_buffer_manager_->number_of_buffers(), |
| audio_buffer_manager_->buffer_size(), |
| bitstream_buffer_manager_->number_of_buffers(), |
| bitstream_buffer_manager_->buffer_size())); |
| |
| return PP_OK_COMPLETIONPENDING; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgEncode( |
| ppapi::host::HostMessageContext* context, |
| int32_t buffer_id) { |
| if (encoder_last_error_) |
| return encoder_last_error_; |
| |
| if (buffer_id < 0 || buffer_id >= audio_buffer_manager_->number_of_buffers()) |
| return PP_ERROR_FAILED; |
| |
| audio_buffer_manager_->EnqueueBuffer(buffer_id); |
| |
| DoEncode(); |
| |
| return PP_OK_COMPLETIONPENDING; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgRecycleBitstreamBuffer( |
| ppapi::host::HostMessageContext* context, |
| int32_t buffer_id) { |
| if (encoder_last_error_) |
| return encoder_last_error_; |
| |
| if (buffer_id < 0 || |
| buffer_id >= bitstream_buffer_manager_->number_of_buffers()) |
| return PP_ERROR_FAILED; |
| |
| bitstream_buffer_manager_->EnqueueBuffer(buffer_id); |
| |
| DoEncode(); |
| |
| return PP_OK; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgRequestBitrateChange( |
| ppapi::host::HostMessageContext* context, |
| uint32_t bitrate) { |
| if (encoder_last_error_) |
| return encoder_last_error_; |
| |
| media_task_runner_->PostTask( |
| FROM_HERE, base::BindOnce(&AudioEncoderImpl::RequestBitrateChange, |
| base::Unretained(encoder_.get()), bitrate)); |
| |
| return PP_OK; |
| } |
| |
| int32_t PepperAudioEncoderHost::OnHostMsgClose( |
| ppapi::host::HostMessageContext* context) { |
| encoder_last_error_ = PP_ERROR_FAILED; |
| Close(); |
| |
| return PP_OK; |
| } |
| |
| void PepperAudioEncoderHost::GetSupportedProfiles( |
| std::vector<PP_AudioProfileDescription>* profiles) { |
| DCHECK(RenderThreadImpl::current()); |
| |
| *profiles = AudioEncoderImpl::GetSupportedProfiles(); |
| } |
| |
| bool PepperAudioEncoderHost::IsInitializationValid( |
| const ppapi::proxy::PPB_AudioEncodeParameters& parameters) { |
| DCHECK(RenderThreadImpl::current()); |
| |
| std::vector<PP_AudioProfileDescription> profiles; |
| GetSupportedProfiles(&profiles); |
| |
| for (const PP_AudioProfileDescription& profile : profiles) { |
| if (parameters.output_profile == profile.profile && |
| parameters.input_sample_size == profile.sample_size && |
| parameters.input_sample_rate == profile.sample_rate && |
| parameters.channels <= profile.max_channels && |
| PP_HardwareAccelerationCompatibleAudio( |
| profile.hardware_accelerated == PP_TRUE, parameters.acceleration)) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| bool PepperAudioEncoderHost::AllocateBuffers( |
| const ppapi::proxy::PPB_AudioEncodeParameters& parameters, |
| int32_t samples_per_frame) { |
| DCHECK(RenderThreadImpl::current()); |
| |
| // Audio buffers size computation. |
| base::CheckedNumeric<uint32_t> audio_buffer_size = samples_per_frame; |
| audio_buffer_size *= parameters.channels; |
| audio_buffer_size *= parameters.input_sample_size; |
| |
| base::CheckedNumeric<uint32_t> total_audio_buffer_size = audio_buffer_size; |
| total_audio_buffer_size += sizeof(ppapi::MediaStreamBuffer::Audio); |
| base::CheckedNumeric<size_t> total_audio_memory_size = |
| total_audio_buffer_size; |
| total_audio_memory_size *= kDefaultNumberOfAudioBuffers; |
| |
| // Bitstream buffers size computation (individual bitstream buffers are |
| // twice the size of the raw data, to handle the worst case where |
| // compression doesn't work). |
| base::CheckedNumeric<uint32_t> bitstream_buffer_size = audio_buffer_size; |
| bitstream_buffer_size *= 2; |
| bitstream_buffer_size += sizeof(ppapi::MediaStreamBuffer::Bitstream); |
| base::CheckedNumeric<size_t> total_bitstream_memory_size = |
| bitstream_buffer_size; |
| total_bitstream_memory_size *= kDefaultNumberOfAudioBuffers; |
| |
| if (!total_audio_memory_size.IsValid() || |
| !total_bitstream_memory_size.IsValid()) |
| return false; |
| |
| std::unique_ptr<base::SharedMemory> audio_memory( |
| RenderThreadImpl::current()->HostAllocateSharedMemoryBuffer( |
| total_audio_memory_size.ValueOrDie())); |
| if (!audio_memory) |
| return false; |
| std::unique_ptr<ppapi::MediaStreamBufferManager> audio_buffer_manager( |
| new ppapi::MediaStreamBufferManager(this)); |
| if (!audio_buffer_manager->SetBuffers( |
| kDefaultNumberOfAudioBuffers, |
| base::ValueOrDieForType<int32_t>(total_audio_buffer_size), |
| std::move(audio_memory), false)) |
| return false; |
| |
| for (int32_t i = 0; i < audio_buffer_manager->number_of_buffers(); ++i) { |
| ppapi::MediaStreamBuffer::Audio* buffer = |
| &(audio_buffer_manager->GetBufferPointer(i)->audio); |
| buffer->header.size = total_audio_buffer_size.ValueOrDie(); |
| buffer->header.type = ppapi::MediaStreamBuffer::TYPE_AUDIO; |
| buffer->sample_rate = |
| static_cast<PP_AudioBuffer_SampleRate>(parameters.input_sample_rate); |
| buffer->number_of_channels = parameters.channels; |
| buffer->number_of_samples = samples_per_frame; |
| buffer->data_size = audio_buffer_size.ValueOrDie(); |
| } |
| |
| std::unique_ptr<base::SharedMemory> bitstream_memory( |
| RenderThreadImpl::current()->HostAllocateSharedMemoryBuffer( |
| total_bitstream_memory_size.ValueOrDie())); |
| if (!bitstream_memory) |
| return false; |
| std::unique_ptr<ppapi::MediaStreamBufferManager> bitstream_buffer_manager( |
| new ppapi::MediaStreamBufferManager(this)); |
| if (!bitstream_buffer_manager->SetBuffers( |
| kDefaultNumberOfAudioBuffers, |
| base::ValueOrDieForType<int32_t>(bitstream_buffer_size), |
| std::move(bitstream_memory), true)) |
| return false; |
| |
| for (int32_t i = 0; i < bitstream_buffer_manager->number_of_buffers(); ++i) { |
| ppapi::MediaStreamBuffer::Bitstream* buffer = |
| &(bitstream_buffer_manager->GetBufferPointer(i)->bitstream); |
| buffer->header.size = bitstream_buffer_size.ValueOrDie(); |
| buffer->header.type = ppapi::MediaStreamBuffer::TYPE_BITSTREAM; |
| } |
| |
| audio_buffer_manager_.swap(audio_buffer_manager); |
| bitstream_buffer_manager_.swap(bitstream_buffer_manager); |
| |
| return true; |
| } |
| |
| void PepperAudioEncoderHost::DoEncode() { |
| DCHECK(RenderThreadImpl::current()); |
| DCHECK(!encoder_last_error_); |
| |
| if (!audio_buffer_manager_->HasAvailableBuffer() || |
| !bitstream_buffer_manager_->HasAvailableBuffer()) |
| return; |
| |
| int32_t audio_buffer_id = audio_buffer_manager_->DequeueBuffer(); |
| int32_t bitstream_buffer_id = bitstream_buffer_manager_->DequeueBuffer(); |
| |
| ppapi::MediaStreamBuffer* audio_buffer = |
| audio_buffer_manager_->GetBufferPointer(audio_buffer_id); |
| ppapi::MediaStreamBuffer* bitstream_buffer = |
| bitstream_buffer_manager_->GetBufferPointer(bitstream_buffer_id); |
| |
| media_task_runner_->PostTask( |
| FROM_HERE, |
| base::BindOnce(&AudioEncoderImpl::Encode, |
| base::Unretained(encoder_.get()), |
| static_cast<uint8_t*>(audio_buffer->audio.data), |
| audio_buffer_manager_->buffer_size() - |
| sizeof(ppapi::MediaStreamBuffer::Audio), |
| static_cast<uint8_t*>(bitstream_buffer->bitstream.data), |
| bitstream_buffer_manager_->buffer_size() - |
| sizeof(ppapi::MediaStreamBuffer::Bitstream), |
| media::BindToCurrentLoop(base::BindOnce( |
| &PepperAudioEncoderHost::BitstreamBufferReady, |
| weak_ptr_factory_.GetWeakPtr(), audio_buffer_id, |
| bitstream_buffer_id)))); |
| } |
| |
| void PepperAudioEncoderHost::BitstreamBufferReady(int32_t audio_buffer_id, |
| int32_t bitstream_buffer_id, |
| int32_t result) { |
| DCHECK(RenderThreadImpl::current()); |
| |
| if (encoder_last_error_) |
| return; |
| |
| if (result < 0) { |
| NotifyPepperError(PP_ERROR_FAILED); |
| return; |
| } |
| |
| host()->SendUnsolicitedReply( |
| pp_resource(), PpapiPluginMsg_AudioEncoder_EncodeReply(audio_buffer_id)); |
| |
| ppapi::MediaStreamBuffer::Bitstream* buffer = |
| &(bitstream_buffer_manager_->GetBufferPointer(bitstream_buffer_id) |
| ->bitstream); |
| buffer->data_size = static_cast<uint32_t>(result); |
| |
| host()->SendUnsolicitedReply( |
| pp_resource(), |
| PpapiPluginMsg_AudioEncoder_BitstreamBufferReady(bitstream_buffer_id)); |
| } |
| |
| void PepperAudioEncoderHost::NotifyPepperError(int32_t error) { |
| DCHECK(RenderThreadImpl::current()); |
| |
| encoder_last_error_ = error; |
| Close(); |
| host()->SendUnsolicitedReply( |
| pp_resource(), |
| PpapiPluginMsg_AudioEncoder_NotifyError(encoder_last_error_)); |
| } |
| |
| void PepperAudioEncoderHost::Close() { |
| DCHECK(RenderThreadImpl::current()); |
| |
| // Destroy the encoder and the audio/bitstream buffers on the media thread |
| // to avoid freeing memory the encoder might still be working on. |
| media_task_runner_->PostTask( |
| FROM_HERE, base::BindOnce(&StopAudioEncoder, std::move(encoder_), |
| std::move(audio_buffer_manager_), |
| std::move(bitstream_buffer_manager_))); |
| } |
| |
| // static |
| void PepperAudioEncoderHost::StopAudioEncoder( |
| std::unique_ptr<AudioEncoderImpl> encoder, |
| std::unique_ptr<ppapi::MediaStreamBufferManager> audio_buffer_manager, |
| std::unique_ptr<ppapi::MediaStreamBufferManager> bitstream_buffer_manager) { |
| } |
| |
| } // namespace content |
