Migration from Native Client to WebAssembly

This section provides an extension to https://developer.chrome.com/docs/native-client/migration/ article, which describes interface mapping from Google PPAPI interfaces to WebAssembly.

Emscripten SDK, modified by Samsung, provides additional functionalities that were available in Native Client - Player, Sockets and Video Decoder APIs.

Samsung Specific PPAPIs migration to WASM

	PPAPI	WASM (Emscripten)
Player	NaCl Player	WASM Player
Sockets	POSIX API (through nacl_io) https://developer.chrome.com/docs/native-client/devguide/coding/nacl_io/	POSIX API
Video Decoder	pp::VideoDecoder	Part of WASM Player functionality. WASM Player needs to be initialized with RenderingMode::kVideoTexture parameter, which indicates that you want to return decoded frames to application as GL Texture instead of presenting them on a screen.

NaCl Player -> WASM Player

Tizen WASM Player API Documentation

Samsung::NaClPlayer::ESDataSource

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::ESDataSource::AddStream	samsung::wasm::ElementaryMediaStreamSource::AddTrack
Samsung::NaClPlayer::ESDataSource::SetDuration	samsung::wasm::ElementaryMediaStreamSource::SetDuration
Samsung::NaClPlayer::ESDataSource::SetEndOfStream	samsung::wasm::ElementaryMediaTrack::AppendEndOfTrack

Samsung::NaClPlayer::ElementaryStream

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::ElementaryStream::GetStreamType	samsung::wasm::ElementaryMediaTrack::GetType
Samsung::NaClPlayer::ElementaryStream::InitializeDone	samsung::wasm::ElementaryMediaStreamSource::AddTrack
Samsung::NaClPlayer::ElementaryStream::AppendPacket	samsung::wasm::ElementaryMediaTrack::AppendPacketAsync
Samsung::NaClPlayer::ElementaryStream::AppendPacket	samsung::wasm::ElementaryMediaTrack::AppendPacketAsync
Samsung::NaClPlayer::ElementaryStream::AppendEncryptedPacket	samsung::wasm::ElementaryMediaTrack::AppendEncryptedPacketAsync
Samsung::NaClPlayer::ElementaryStream::AppendTrustZonePacket	-
Samsung::NaClPlayer::ElementaryStream::Flush	samsung::wasm::ElementaryMediaStreamSource::Flush
Samsung::NaClPlayer::ElementaryStream::SetDRMInitData	samsung::wasm::MediaKey::SetupEncryption

Samsung::NaClPlayer::AudioElementaryStream

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::AudioElementaryStream::GetAudioCodecType	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::AudioElementaryStream::SetAudioCodecType	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::AudioElementaryStream::GetAudioCodecProfile	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::AudioElementaryStream::SetAudioCodecProfile	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::AudioElementaryStream::GetSampleFormat	samsung::wasm::ElementaryAudioTrackConfig::sample_format
Samsung::NaClPlayer::AudioElementaryStream::SetSampleFormat	samsung::wasm::ElementaryAudioTrackConfig::sample_format
Samsung::NaClPlayer::AudioElementaryStream::SetBitsPerChannel	-
Samsung::NaClPlayer::AudioElementaryStream::GetBitsPerChannel	-
Samsung::NaClPlayer::AudioElementaryStream::GetSamplesPerSecond	samsung::wasm::ElementaryAudioTrackConfig::samples_per_second
Samsung::NaClPlayer::AudioElementaryStream::GetBitsPerChannel	samsung::wasm::ElementaryAudioTrackConfig::samples_per_second
Samsung::NaClPlayer::AudioElementaryStream::SetCodecExtraData	samsung::wasm::ElementaryMediaTrackConfig::extradata

Samsung::NaClPlayer::VideoElementaryStream

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::VideoElementaryStream::GetVideoCodecType	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::VideoElementaryStream::SetVideoCodecType	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::VideoElementaryStream::GetVideoCodecProfile	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::VideoElementaryStream::SetVideoCodecProfile	samsung::wasm::ElementaryMediaTrackConfig::mime_type
Samsung::NaClPlayer::VideoElementaryStream::GetVideoFrameFormat	-
Samsung::NaClPlayer::VideoElementaryStream::SetVideoFrameFormat	-
Samsung::NaClPlayer::VideoElementaryStream::GetVideoFrameSize	samsung::wasm::ElementaryVideoTrackConfig::width samsung::wasm::ElementaryVideoTrackConfig::height
Samsung::NaClPlayer::VideoElementaryStream::SetVideoFrameSize	samsung::wasm::ElementaryVideoTrackConfig::width samsung::wasm::ElementaryVideoTrackConfig::height
Samsung::NaClPlayer::VideoElementaryStream::GetFrameRate	samsung::wasm::ElementaryVideoTrackConfig::framerate_num samsung::wasm::ElementaryVideoTrackConfig::framerate_den
Samsung::NaClPlayer::VideoElementaryStream::SetFrameRate	samsung::wasm::ElementaryVideoTrackConfig::framerate_num samsung::wasm::ElementaryVideoTrackConfig::framerate_den
Samsung::NaClPlayer::VideoElementaryStream::SetCodecExtraData	samsung::wasm::ElementaryMediaTrackConfig::extradata

Samsung::NaClPlayer::MediaPlayer

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::MediaPlayer::MediaPlayer	samsung::wasm::HtmlMediaElement
Samsung::NaClPlayer::MediaPlayer::SetMediaEventsListener	samsung::html::HtmlMediaElement::SetListener
Samsung::NaClPlayer::MediaPlayer::SetSubtitleListener	-
Samsung::NaClPlayer::MediaPlayer::SetBufferingListener	samsung::html::HtmlMediaElement::SetListener
Samsung::NaClPlayer::MediaPlayer::SetDRMListener	-
Samsung::NaClPlayer::MediaPlayer::BindToDisplay	-
Samsung::NaClPlayer::MediaPlayer::AttachDataSource	samsung::html::HTMLMediaElement::SetSrc
Samsung::NaClPlayer::MediaPlayer::Play	samsung::html::HTMLMediaElement::Play
Samsung::NaClPlayer::MediaPlayer::Pause	samsung::html::HTMLMediaElement::Pause
Samsung::NaClPlayer::MediaPlayer::Stop	samsung::html::HTMLMediaElement::~HTMLMediaElement
Samsung::NaClPlayer::MediaPlayer::Seek	samsung::html::HTMLMediaElement::SetCurrentTime
Samsung::NaClPlayer::MediaPlayer::SetPlaybackRate	-
Samsung::NaClPlayer::MediaPlayer::GetDuration	samsung::html::HTMLMediaElement::GetDuration
Samsung::NaClPlayer::MediaPlayer::GetCurrentTime	samsung::html::HTMLMediaElement::GetCurrentTime
Samsung::NaClPlayer::MediaPlayer::GetPlayerState	-
Samsung::NaClPlayer::MediaPlayer::GetCurrentVideoTrackInfo	-
Samsung::NaClPlayer::MediaPlayer::GetVideoTracksList	-
Samsung::NaClPlayer::MediaPlayer::GetCurrentAudioTrackInfo	-
Samsung::NaClPlayer::MediaPlayer::GetAudioTracksList	-
Samsung::NaClPlayer::MediaPlayer::GetCurrentTextTrackInfo	-
Samsung::NaClPlayer::MediaPlayer::GetTextTracksList	-
Samsung::NaClPlayer::MediaPlayer::SelectTrack	-
Samsung::NaClPlayer::MediaPlayer::AddExternalSubtitles	-
Samsung::NaClPlayer::MediaPlayer::SetSubtitlesDelay	-
Samsung::NaClPlayer::MediaPlayer::SetDisplayRect	* Customized with video-tag parameters in JavaScript
Samsung::NaClPlayer::MediaPlayer::SetDisplayMode	* Customized with video-tag parameters in JavaScript
Samsung::NaClPlayer::MediaPlayer::SetVr360Mode	-
Samsung::NaClPlayer::MediaPlayer::SetVr360Rotation	-
Samsung::NaClPlayer::MediaPlayer::SetDRMSpecificData	samsung::wasm::MediaKey::SetupEncryption

Samsung::NaClPlayer::URLDataSource

PPAPI	WASM (Emscripten)
Samsung::NaClPlayer::URLDataSource	Available using `video` tag with url src element.

VideoDecoder -> WASM Player

PPAPI	WASM (Emscripten)
pp::VideoDecoder::Create	samsung::wasm::ElementaryMediaStreamSource::AddTrack
pp::VideoDecoder::Initialize	samsung::wasm::ElementaryMediaStreamSource::AddTrack
pp::VideoDecoder::Decode	samsung::html::HtmlMediaElement::Play
pp::VideoDecoder::GetPicture	samsung::wasm::ElementaryMediaTrack::FillTextureWithNextFrame
pp::VideoDecoder::RecyclePicture	samsung::wasm::ElementaryMediaTrack::RecycleTexture
pp::VideoDecoder::Flush	samsung::wasm::ElementaryMediaStreamSource::Flush
pp::VideoDecoder::Reset	samsung::wasm::ElementaryMediaStreamSource::RemoveTrack samsung::wasm::ElementaryMediaStreamSource::AddTrack

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