CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/FeatureLib/pfMoviePlayer/plMoviePlayer.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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*==LICENSE==*/

#include "plMoviePlayer.h"

#include "hsConfig.h"
#ifdef PLASMA_USE_WEBM
#   define VPX_CODEC_DISABLE_COMPAT 1
#   include <vpx/vpx_decoder.h>
#   include <vpx/vp8dx.h>
#   define iface (vpx_codec_vp9_dx())
#   include <opus.h>

#   define WEBM_CODECID_VP9 "V_VP9"
#   define WEBM_CODECID_OPUS "A_OPUS"
#endif

#include "hsResMgr.h"
#include "hsTimer.h"
#include "../plAudio/plWin32VideoSound.h"
#include "../plGImage/plMipmap.h"
#include "../pnKeyedObject/plUoid.h"
#include "../plPipeline/hsGDeviceRef.h"
#include "../plPipeline/plPlates.h"
#include "../plResMgr/plLocalization.h"
#include "../plStatusLog/plStatusLog.h"
#include "../plFile/plFileUtils.h"

#include "plPlanarImage.h"
#include "webm/mkvreader.hpp"
#include "webm/mkvparser.hpp"

#define SAFE_OP(x, err) \
{ \
    Int64 ret = 0; \
    ret = x; \
    if (ret < 0) { \
        hsAssert(false, "failed to " err); \
        return false; \
    } \
}

// =====================================================

class VPX
{
    VPX() { }

#ifdef PLASMA_USE_WEBM
public:
    vpx_codec_ctx_t codec;

    ~VPX()
    {
        if (vpx_codec_destroy(&codec))
            hsAssert(false, vpx_codec_error_detail(&codec));
    }

    static VPX* Create()
    {
        VPX* instance = new VPX;
        if (vpx_codec_dec_init(&instance->codec, iface, nullptr, 0)) {
            hsAssert(false, vpx_codec_error_detail(&instance->codec));
            delete instance;
            return nullptr;
        }
        return instance;
    }

    vpx_image_t* Decode(UInt8* buf, UInt32 size)
    {
        if (vpx_codec_decode(&codec, buf, size, nullptr, 0) != VPX_CODEC_OK) {
            const char* detail = vpx_codec_error_detail(&codec);
            hsAssert(false, detail ? detail : "unspecified decode error");
            return nullptr;
        }

        vpx_codec_iter_t  iter = nullptr;
        // ASSUMPTION: only one image per frame
        // if this proves false, move decoder function into IProcessVideoFrame
        return vpx_codec_get_frame(&codec, &iter);
    }
#endif
};

// =====================================================

class TrackMgr
{
protected:
    const mkvparser::Track* fTrack;
    const mkvparser::BlockEntry* fCurrentBlock;
    Int32 fStatus;

public:
    TrackMgr(const mkvparser::Track* track) : fTrack(track), fCurrentBlock(nullptr), fStatus(0) { }

    const mkvparser::Track* GetTrack() { return fTrack; }

    bool GetFrames(mkvparser::MkvReader* reader, Int64 movieTimeNs, std::vector<blkbuf_t>& frames)
    {
        // If we have no block yet, grab the first one
        if (!fCurrentBlock)
            fStatus = fTrack->GetFirst(fCurrentBlock);

        // Continue through the blocks until our current movie time
        while (fCurrentBlock && fStatus == 0) {
            const mkvparser::Block* block = fCurrentBlock->GetBlock();
            Int64 time = block->GetTime(fCurrentBlock->GetCluster()) - fTrack->GetCodecDelay();
            if (time <= movieTimeNs) {
                // We want to play this block, add it to the frames buffer
                frames.reserve(frames.size() + block->GetFrameCount());
                for (Int32 i = 0; i < block->GetFrameCount(); i++) {
                    const mkvparser::Block::Frame data = block->GetFrame(i);
                    UInt8* buf = new UInt8[data.len];
                    data.Read(reader, buf);
                    frames.push_back(std::make_pair(std::auto_ptr<UInt8>(buf), static_cast<Int32>(data.len)));
                }
                fStatus = fTrack->GetNext(fCurrentBlock, fCurrentBlock);
            } else {
                // We've got all frames that have to play... come back for more later!
                return true;
            }
        }

        return false; // No more blocks... We're done!
    }
};

// =====================================================

plMoviePlayer::plMoviePlayer()
    : fPlate(nullptr),
      fTexture(nullptr),
      fReader(nullptr),
      fMovieTime(0),
      fLastFrameTime(0),
      fPosition(hsPoint2()),
      fPlaying(false),
      fPaused(false),
	  fMoviePath(nullptr)
{
    fScale.Set(1.0f, 1.0f);
}

plMoviePlayer::~plMoviePlayer()
{
    if (fPlate)
        // The plPlate owns the Mipmap Texture, so it destroys it for us
        plPlateManager::Instance().DestroyPlate(fPlate);
#ifdef PLASMA_USE_WEBM
    if (fReader) {
        fReader->Close();
        delete fReader;
    }
#endif
	delete[] fMoviePath;
}

bool plMoviePlayer::IOpenMovie()
{
#ifdef PLASMA_USE_WEBM
    if (!plFileUtils::FileExists(fMoviePath)) {
        plStatusLog::AddLineS("movie.log", "%s: Tried to play a movie that doesn't exist.", fMoviePath);
        return false;
    }

    // open the movie with libwebm
    fReader = new mkvparser::MkvReader;
    SAFE_OP(fReader->Open(fMoviePath), "open movie");

    // opens the segment
    // it contains everything you ever want to know about the movie
    long long pos = 0;
    mkvparser::EBMLHeader ebmlHeader;
    SAFE_OP(ebmlHeader.Parse(fReader, pos), "read mkv header");
    mkvparser::Segment* seg;
    SAFE_OP(mkvparser::Segment::CreateInstance(fReader, pos, seg), "get segment info");
    SAFE_OP(seg->Load(), "load segment from webm");
    fSegment.reset(seg);

    // Use first tracks unless another one matches the current game language
    const mkvparser::Tracks* tracks = fSegment->GetTracks();
    for (UInt32 i = 0; i < tracks->GetTracksCount(); ++i) {
        const mkvparser::Track* track = tracks->GetTrackByIndex(i);
        if (!track)
            continue;

        switch (track->GetType()) {
        case mkvparser::Track::kAudio:
            if (!fAudioTrack.get() || ICheckLanguage(track))
                fAudioTrack.reset(new TrackMgr(track));
            break;
        case mkvparser::Track::kVideo:
            if (!fVideoTrack.get() || ICheckLanguage(track))
                fVideoTrack.reset(new TrackMgr(track));
            break;
        }
    }
    return true;
#else
    return false;
#endif
}

bool plMoviePlayer::ILoadAudio()
{
#ifdef PLASMA_USE_WEBM
    // Fetch audio track information
    if (!fAudioTrack.get()) {
		hsStatusMessage("Movie ILoadAudio fAudioTrack NIL\n");
        return false;
	}
    const mkvparser::AudioTrack* audio = static_cast<const mkvparser::AudioTrack*>(fAudioTrack->GetTrack());
    plWAVHeader header;
    header.fFormatTag = plWAVHeader::kPCMFormatTag;
    header.fNumChannels = audio->GetChannels();
    header.fBitsPerSample = audio->GetBitDepth() == 8 ? 8 : 16;
    header.fNumSamplesPerSec = 48000; // OPUS specs say we shall always decode at 48kHz
    header.fBlockAlign = header.fNumChannels * header.fBitsPerSample / 8;
    header.fAvgBytesPerSec = header.fNumSamplesPerSec * header.fBlockAlign;
    fAudioSound.reset(new plWin32VideoSound(header));

    // Initialize Opus
    if (strncmp(audio->GetCodecId(), WEBM_CODECID_OPUS, arrsize(WEBM_CODECID_OPUS)) != 0) {
        plStatusLog::AddLineS("movie.log", "%s: Not an Opus audio track!", fMoviePath);
        return false;
    }
    int error;
    OpusDecoder* opus = opus_decoder_create(48000, audio->GetChannels(), &error);
    if (error != OPUS_OK)
        hsAssert(false, "Error occured initalizing opus");

    // Decode audio track
    std::vector<blkbuf_t> frames;
    fAudioTrack->GetFrames(fReader, fSegment->GetDuration(), frames);
    static const int maxFrameSize = 5760; // for max packet duration at 48kHz
    std::vector<Int16> decoded;
    decoded.reserve(frames.size() * audio->GetChannels() * maxFrameSize);

    Int16* frameData = new Int16[maxFrameSize * audio->GetChannels()];
    for (std::vector<blkbuf_t>::iterator& frame = frames.begin(); frame != frames.end(); frame++) {
        const std::auto_ptr<UInt8>& buf = frame->first;
        Int32 size = frame->second;

        int samples = opus_decode(opus, buf.get(), size, frameData, maxFrameSize, 0);
        if (samples < 0)
            hsAssert(false, "opus error");
        for (size_t i = 0; i < samples * audio->GetChannels(); i++)
            decoded.push_back(frameData[i]);
    }
    delete[] frameData;

    fAudioSound->FillSoundBuffer(reinterpret_cast<UInt8*>(decoded.data()), decoded.size() * sizeof(Int16));
    opus_decoder_destroy(opus);
    return true;
#else
    return false;
#endif
}

bool plMoviePlayer::ICheckLanguage(const mkvparser::Track* track)
{
    std::set<std::string> codes = plLocalization::GetLanguageCodes(plLocalization::GetLanguage());
    if (codes.find(track->GetLanguage()) != codes.end())
        return true;
    return false;
}

void plMoviePlayer::IProcessVideoFrame(const std::vector<blkbuf_t>& frames)
{
#ifdef PLASMA_USE_WEBM
    vpx_image_t* img = nullptr;

    // We have to decode all the frames, but we only want to display the most recent one to the user.
	for (std::vector<blkbuf_t>::const_iterator frame = frames.begin(); frame != frames.end(); frame++) {
        const std::auto_ptr<UInt8>& buf = frame->first;
		UInt32 size = static_cast<UInt32>(frame->second);
        img = fVpx->Decode(buf.get(), size);
    }

    if (img) {
        // According to VideoLAN[1], I420 is the most common image format in videos. I am inclined to believe this as our
        // attemps to convert the common Uru videos use I420 image data. So, as a shortcut, we will only implement that format.
        // If for some reason we need other formats, please, be my guest!
        // [1] = http://wiki.videolan.org/YUV#YUV_4:2:0_.28I420.2FJ420.2FYV12.29
        switch (img->fmt) {
        case VPX_IMG_FMT_I420:
            plPlanarImage::Yuv420ToRgba(img->d_w, img->d_h, reinterpret_cast<const Int32*>(img->stride), img->planes, reinterpret_cast<UInt8*>(fTexture->GetImage()));
            break;

        default:
        	hsAssert(false, "image format");
        }

        // Flush new data to the device
        if (fTexture->GetDeviceRef())
            fTexture->GetDeviceRef()->SetDirty(true);
        fPlate->SetVisible(true);
    }
#endif
}

bool plMoviePlayer::Start()
{
    if (fPlaying)
        return false;

#ifdef PLASMA_USE_WEBM
    if (!IOpenMovie())
        return false;
    hsAssert(fVideoTrack.get(), "nil video track -- expect bad things to happen!");
    hsStatusMessageF("Opened movie %s\n", fMoviePath);

    // Initialize VPX
    const mkvparser::VideoTrack* video = static_cast<const mkvparser::VideoTrack*>(fVideoTrack->GetTrack());
    if (strncmp(video->GetCodecId(), WEBM_CODECID_VP9, arrsize(WEBM_CODECID_VP9)) != 0) {
        plStatusLog::AddLineS("movie.log", "%s: Not a VP9 video track!", fMoviePath);
        return false;
    }
    hsStatusMessageF("... movie track selected, codec: %s\n", video->GetCodecId());

    if (VPX* vpx = VPX::Create())
        fVpx.reset(vpx);
    else
        return false;

    // Decode the audio track and load it into a sound buffer
	if (!ILoadAudio()) {
    	hsStatusMessage("... movie audio track load failed\n");
        return false;
    }
    hsStatusMessage("... movie audio track buffered\n");


    fLastFrameTime = static_cast<Int64>(hsTimer::GetMilliSeconds());
    fAudioSound->Play();
    fPlaying = true;

    hsStatusMessage("... plMoviePlayer::Start() returns\n");
    return true;
#else
    return false;
#endif // MOVIE_AVAILABLE
}

void plMoviePlayer::IInitPlate(UInt32 width, UInt32 height)
{
    // Need to figure out scaling based on pipe size.
    plPlateManager& plateMgr = plPlateManager::Instance();
    float plateWidth = width * fScale.fX;
    float plateHeight = height * fScale.fY;
    if (plateWidth > plateMgr.GetPipeWidth() || plateHeight > plateMgr.GetPipeHeight()) {
        float scale = std::min(plateMgr.GetPipeWidth() / plateWidth, plateMgr.GetPipeHeight() / plateHeight);
        plateWidth *= scale;
        plateHeight *= scale;
    }
    plateMgr.CreatePlate(&fPlate, fPosition.fX, fPosition.fY, 0, 0);
    plateMgr.SetPlatePixelSize(fPlate, plateWidth, plateHeight);
    fTexture = fPlate->CreateMaterial(width, height, false);
}

bool plMoviePlayer::NextFrame()
{
    if (!fPlaying)
        return false;

    Int64 frameTime = static_cast<Int64>(hsTimer::GetMilliSeconds());
    Int64 frameTimeDelta = frameTime - fLastFrameTime;
    fLastFrameTime = frameTime;

    if (fPaused)
        return true;

#ifdef PLASMA_USE_WEBM
    // Get our current timecode
    fMovieTime += frameTimeDelta;

    std::vector<blkbuf_t> video;
    if (fVideoTrack.get() == nullptr || !fVideoTrack->GetFrames(fReader, fMovieTime * 1000000, video)) {
        Stop();
        return false;
    }

    // If the pipeline's device was invalidated, the plate will be invalid. Recreate now.
    if (!fPlate) {
        const mkvparser::VideoTrack* vt = static_cast<const mkvparser::VideoTrack*>(fVideoTrack->GetTrack());
        IInitPlate(static_cast<UInt32>(vt->GetWidth()), static_cast<UInt32>(vt->GetHeight()));
        hsAssert(fPlate, "failed to init plMoviePlayer plate -- bad things will happen!");
    }

    // Show our mess
    IProcessVideoFrame(video);
    fAudioSound->RefreshVolume();

    return true;
#else
    return false;
#endif // MOVIE_AVAILABLE
}

bool plMoviePlayer::Pause(bool on)
{
    if (!fPlaying)
        return false;

    fAudioSound->Pause(on);
    fPaused = on;
    return true;
}

bool plMoviePlayer::Stop()
{
    fPlaying = false;
    if (fAudioSound.get() != nullptr)
        fAudioSound->Stop();
    if (fPlate)
        fPlate->SetVisible(false);

    for (std::vector<plMessage*>::iterator cb = fCallbacks.begin(); cb != fCallbacks.end(); cb++)
        (*cb)->Send();
    fCallbacks.clear();
    return true;
}