#include "pch.h"
#include "app.h"
#include "action.h"
#include "node_dialog_open.h"
#include "node_dialog_browse.h"
#include "node_dialog_resize.h"
#include "node_dialog_cloud.h"
#include "node_about.h"
#include "node_changelog.h"
#include "node_usermanual.h"
#include "node_dialog_export_ppbr.h"

#include <codec_api.h>
#define MP4V2_NO_STDINT_DEFS
#include <mp4v2/mp4v2.h>

#ifdef __QUEST__
#include "oculus_vr.h"
#elif __WEB__
void webgl_pick_file(std::function<void(std::string)> callback);
void webgl_pick_file_save(const std::string& path, 
    const std::string& name, std::function<void(bool)> callback);
void webgl_sync();
#endif

std::shared_ptr<NodeProgressBar> App::show_progress(const std::string& title, int total /*= 0*/)
{
    auto pb = std::make_shared<NodeProgressBar>();
    pb->set_manager(&layout);
    pb->init();
    pb->create();
    pb->loaded();
    pb->m_progress->SetWidthP(0);
    pb->m_title->set_text(title.c_str());
    pb->m_total = total;
    pb->m_count = 0;
    layout[main_id]->add_child(pb);
    return pb;
}

std::shared_ptr<NodeMessageBox> App::message_box(const std::string &title, const std::string& text, bool cancel_button)
{
    auto m = std::make_shared<NodeMessageBox>();
    m->set_manager(&layout);
    m->init();
    m->create();
    m->loaded();
    m->m_title->set_text(title.c_str());
    m->m_message->set_text(text.c_str());
    m->btn_ok->m_text->set_text("Ok");
    if (!cancel_button)
        m->btn_cancel->destroy();
    layout[main_id]->add_child(m);
    return m;
}

std::shared_ptr<NodeInputBox> App::input_box(const std::string& title, 
    const std::string& field_name, const std::string& ok_caption /*= "Ok"*/)
{
    auto m = std::make_shared<NodeInputBox>();
    m->set_manager(&layout);
    m->init();
    m->create();
    m->loaded();
    m->m_title->set_text(title.c_str());
    m->m_field_name->set_text(field_name.c_str());
    m->btn_ok->m_text->set_text(ok_caption.c_str());
    layout[main_id]->add_child(m);
    return m;
}

void App::dialog_usermanual()
{
    auto dialog = std::make_shared<NodeUserManual>();
    dialog->set_manager(&layout);
    dialog->init();
    dialog->create();
    dialog->loaded();

    layout[main_id]->add_child(dialog);
}

void App::dialog_changelog()
{
    auto dialog = std::make_shared<NodeChangelog>();
    dialog->set_manager(&layout);
    dialog->init();
    dialog->create();
    dialog->loaded();

    layout[main_id]->add_child(dialog);
}

void App::dialog_about()
{
    auto dialog = std::make_shared<NodeAbout>();
    dialog->set_manager(&layout);
    dialog->init();
    dialog->create();
    dialog->loaded();

    layout[main_id]->add_child(dialog);
}

void App::dialog_newdoc()
{
    auto show_dialog = [this] {
        auto dialog = std::make_shared<NodeDialogNewDoc>();
        dialog->set_manager(&layout);
        dialog->init();
        dialog->create();
        dialog->loaded();
        dialog->input->set_text("name");

        layout[main_id]->add_child(dialog);

        App::I->showKeyboard();

        dialog->btn_ok->on_click = [this, dialog](Node*)
        {
            std::string name = dialog->input->m_text;
            std::string path = work_path + "/" + name + ".ppi";

            if (name.empty())
            {
                message_box("Warning", "You need to specify a name to file.");
                return;
            }

            auto action = [this, dialog, name, path] {
                std::array<int, 6> resolutions{ 512, 1024, 1536, 2048, 4096, 8192 };
                int res = resolutions[dialog->m_resolution->m_current_index];
                doc_name = name;
                doc_path = path;
                doc_filename = name + ".ppi";
                doc_dir = work_path;

                layers->clear();
                canvas->m_canvas->m_layers.clear();
                canvas->m_canvas->resize(res, res);
                canvas->reset_camera();
                ActionManager::clear();

                layers->add_layer("Default", false, true);

                canvas->m_canvas->m_unsaved = true;
                canvas->m_canvas->m_newdoc = false;
                title_update();

                dialog->destroy();
                App::I->hideKeyboard();
            };

            if (Asset::exist(path))
            {
                // ask confirm is file already exist
                auto msgbox = new NodeMessageBox();
                msgbox->set_manager(&layout);
                msgbox->init();
                msgbox->m_title->set_text("Warning");
                msgbox->m_message->set_text("A document with this name already exists, continue?");
                msgbox->btn_ok->on_click = [this, msgbox, action](Node*) {
                    action();
                    msgbox->destroy();
                };
                layout[main_id]->add_child(msgbox);
            }
            else
            {
                action();
            }

        };
        dialog->btn_cancel->on_click = [this, dialog](Node*)
        {
            dialog->destroy();
            App::I->hideKeyboard();
        };
    };

    if (canvas)
    {
        if (Canvas::I->m_unsaved)
        {
            auto m = layout[main_id]->add_child<NodeMessageBox>();
            m->m_title->set_text("Unsaved document");
            m->m_message->set_text("Would you like to save this document before closing?");
            m->btn_ok->m_text->set_text("Yes");
            m->btn_cancel->m_text->set_text("No");
            m->btn_ok->on_click = [this, m, show_dialog](Node*) {
                Canvas::I->project_save([this, m, show_dialog](bool success){
                    if (success)
                        show_dialog();
                    else
                        message_box("Saving Error", "There was a problem saving the document");
                });
                m->destroy();
            };
            m->btn_cancel->on_click = [this, m, show_dialog](Node*) {
                show_dialog();
                m->destroy();
            };
        }
        else
        {
            show_dialog();
        }
    }
}

// DEPRECATED
void App::dialog_open()
{
    auto show_dialog = [this] {
        // load thumbnail test
        auto dialog = std::make_shared<NodeDialogOpen>();
        dialog->set_manager(&layout);
        dialog->init();
        dialog->create();
        dialog->loaded();

        layout[main_id]->add_child(dialog);

        dialog->btn_ok->on_click = [this, dialog](Node*)
        {
//            canvas->reset_camera();
//            layers->clear();
//            doc_name = dialog->selected_name;
//            canvas->m_canvas->project_open(dialog->selected_path, [this](bool success) {
//                // on complete
//                async_start();
//                title_update();
//                for (auto& i : canvas->m_canvas->m_order)
//                    layers->add_layer(canvas->m_canvas->m_layers[i]->m_name.c_str());
//                async_end();
//            });
//            dialog->destroy();
//            ActionManager::clear();
        };
    };

    if (canvas)
    {
        if (Canvas::I->m_unsaved)
        {
            auto m = layout[main_id]->add_child<NodeMessageBox>();
            m->m_title->set_text("Unsaved document");
            m->m_message->set_text("Would you like to save this document before closing?");
            m->btn_ok->m_text->set_text("Yes");
            m->btn_cancel->m_text->set_text("No");
            m->btn_ok->on_click = [this,m,show_dialog](Node*){
                Canvas::I->project_save([this,m,show_dialog](bool success){
                    if (success)
                        show_dialog();
                    else
                        message_box("Saving Error", "There was a problem saving the document");
                });
                m->destroy();
            };
            m->btn_cancel->on_click = [this,m,show_dialog](Node*) {
                show_dialog();
                m->destroy();
            };
        }
        else
        {
            show_dialog();
        }
    }
}

void App::dialog_browse()
{
    auto show_dialog = [this] {
        // load thumbnail test
        auto dialog = std::make_shared<NodeDialogBrowse>();
        dialog->set_manager(&layout);
#ifdef __IOS__
        dialog->search_paths = {work_path, data_path + "/Inbox"};
#else
        dialog->search_paths = {work_path};
#endif
        dialog->init();
        dialog->create();
        dialog->loaded();

        layout[main_id]->add_child(dialog);

        dialog->btn_ok->on_click = [this, dialog](Node*)
        {
            if (dialog->is_selected())
            {
                open_document(dialog->selected_path);
                dialog->destroy();
            }
        };
    };

    if (canvas)
    {
        if (Canvas::I->m_unsaved)
        {
            auto m = layout[main_id]->add_child<NodeMessageBox>();
            m->m_title->set_text("Unsaved document");
            m->m_message->set_text("Would you like to save this document before closing?");
            m->btn_ok->m_text->set_text("Yes");
            m->btn_cancel->m_text->set_text("No");
            m->btn_ok->on_click = [this, m, show_dialog](Node*) {
                Canvas::I->project_save([this, m, show_dialog](bool success){
                    if (success)
                        show_dialog();
                    else
                        message_box("Saving Error", "There was a problem saving the document");
                });
                m->destroy();
            };
            m->btn_cancel->on_click = [this, m, show_dialog](Node*) {
                show_dialog();
                m->destroy();
            };
        }
        else
        {
            show_dialog();
        }
    }
}

void App::dialog_save_ver()
{
    if (!check_license())
    {
        message_box("License", "This function is disabled in demo mode.");
        return;
    }

    int current = 0;
    std::string next = doc_name + ".01";
    std::string base = doc_name;

    std::regex r(R"((.*)\.(\w{2})$)");
    std::smatch m;
    if (std::regex_search(doc_name, m, r))
    {
        base = m[1].str();
        current = atoi(m[2].str().c_str());
    }

    for (int i = current + 1; i < 99; i++)
    {
        static char tmp_name[256];
        sprintf(tmp_name, "%s.%02d", base.c_str(), i);
        next = tmp_name;
        if (Asset::exist(doc_dir + "/" + next + ".ppi"))
            continue;
        break;
    }

    doc_name = next;
    doc_path = doc_dir + "/" + next + ".ppi";
    canvas->m_canvas->m_unsaved = true;
    title_update();
    canvas->m_canvas->project_save(doc_path);
}

void App::dialog_save()
{
    if (!check_license())
    {
        message_box("License", "This function is disabled in demo mode.");
        return;
    }
    
    if (canvas)
    {
        auto dialog = std::make_shared<NodeDialogSave>();
        dialog->set_manager(&layout);
        dialog->init();
        dialog->create();
        dialog->loaded();
        dialog->input->set_text(doc_name);

        App::I->showKeyboard();

        dialog->btn_ok->on_click = [this, dialog](Node*)
        {
            std::string name = dialog->input->m_text;
            std::string path = work_path + "/" + name + ".ppi";

            if (name.empty())
            {
                message_box("Warning", "You need to specify a name to file.");
                return;
            }

            auto action = [this, dialog, name, path] {
                canvas->m_canvas->project_save(path);
                doc_name = name;
                doc_path = path;
                doc_dir = work_path;
                title_update();
                dialog->destroy();
                App::I->hideKeyboard();
            };

            if (Asset::exist(path))
            {
                // ask confirm is file already exist
                auto msgbox = new NodeMessageBox();
                msgbox->set_manager(&layout);
                msgbox->init();
                msgbox->m_title->set_text("Warning");
                msgbox->m_message->set_text(("Are you sure you want to overwrite " + name + "?").c_str());
                msgbox->btn_ok->on_click = [this, msgbox, action](Node*) {
                    action();
                    msgbox->destroy();
                };
                layout[main_id]->add_child(msgbox);
            }
            else
            {
                action();
            }
        };
        dialog->btn_cancel->on_click = [this, dialog](Node*)
        {
            dialog->destroy();
            App::I->hideKeyboard();
        };

        layout[main_id]->add_child(dialog);
    }
}

void App::dialog_export(std::string ext)
{
    if (!check_license())
    {
        message_box("License", "This function is disabled in demo mode.");
        return;
    }

    if (canvas)
    {
        // TODO: use picker
        auto path = work_path + "/" + doc_name + ext;
        auto name = doc_name + ext;
        canvas->m_canvas->export_equirectangular(path, [this, path, name]{
#if defined(__IOS__)
            message_box("Export Equirectangular", "Image exported to Photos");
#elif defined(__OSX__)
            message_box("Export Equirectangular", "Image exported to Pictures/PanoPainter folder");
#elif defined(_WIN32)
            message_box("Export Equirectangular", "Image exported to " + work_path);
#elif defined(__QUEST__)
            //auto result = ovr_Media_ShareToFacebook("Sharing from PanoPainter on Oculus Quest", path.c_str(), ovrMediaContentType_Photo);
#elif __WEB__
            ui_task([=]{
                webgl_pick_file_save(path, name, [](bool success){ });
            });
#endif
        });
    }
}

void App::dialog_export_layers()
{
    if (!check_license())
    {
        message_box("License", "This function is disabled in demo mode.");
        return;
    }

    if (canvas)
    {
#if defined(__IOS__)
        auto dir = work_path + "/" + doc_name + "_layers";
        if (Asset::create_dir(dir))
        {
            auto p = dir + "/" + doc_name;
            canvas->m_canvas->export_layers(p, [this, p] {
                message_box("Export Layers", "Image layers exported to Files/PanoPainter");
            });
        }
#else
        pick_dir([this](std::string path) {
            auto p = path + "/" + doc_name;
            canvas->m_canvas->export_layers(p, [this, p] {
                message_box("Export Layers", "Layers exported to: " + p);
            });
        });
#endif
    }
}

void App::dialog_export_depth()
{
    if (!check_license())
    {
        message_box("License", "This function is disabled in demo mode.");
        return;
    }

    if (canvas)
    {
        // TODO: use picker
        canvas->m_canvas->export_depth(doc_name, [this] {
#if defined(__IOS__)
            message_box("Export 3D View + Depth", "Image and depth exported to Files/PanoPainter");
#elif defined(__OSX__)
            message_box("Export 3D View + Depth", "Image and depth exported to Pictures/PanoPainter folder");
#elif defined(_WIN32)
            message_box("Export 3D View + Depth", "Image and depth exported to " + work_path);
#endif
        });
    }
}

void App::dialog_resize()
{
    auto dialog = std::make_shared<NodeDialogResize>();
    dialog->set_manager(&layout);
    dialog->init();
    dialog->create();
    dialog->loaded();

    layout[main_id]->add_child(dialog);

    dialog->btn_ok->on_click = [this,dialog](Node*)
    {
        int res = dialog->get_resolution();
        if (canvas)
            canvas->m_canvas->resize(res, res);
        App::I->title_update();
        ActionManager::clear();
        dialog->destroy();
    };
}

void App::dialog_export_cube_faces()
{
	if (canvas)
	{
        canvas->m_canvas->export_cube_faces(doc_name, [this] {
#if defined(__IOS__)
            message_box("Export Cube Faces", "Image and depth exported to Files/PanoPainter");
#elif defined(__OSX__)
            message_box("Export Cube Faces", "Image and depth exported to Pictures/PanoPainter folder");
#elif defined(_WIN32)
            message_box("Export Cube Faces", "Image and depth exported to " + work_path);
#endif
        });
    }
}

void App::dialog_layer_rename()
{
    auto dialog = std::make_shared<NodeDialogLayerRename>();
    dialog->set_manager(&layout);
    dialog->init();
    dialog->create();
    dialog->loaded();
    dialog->input->set_text(layers->m_current_layer->m_label_text);

    App::I->showKeyboard();

    layout[main_id]->add_child(dialog);

    dialog->btn_ok->on_click = [this,dialog](Node*)
    {
        struct ActionLayerRename : public Action
        {
            std::string m_old_name;
            std::string m_new_name;
            bool m_unsaved;
            Layer* m_layer;
            std::shared_ptr<NodeLayer> m_layer_node;
            ActionLayerRename(std::string old_name, std::string new_name, std::shared_ptr<NodeLayer> layer_node, Layer* layer) :
                m_old_name(old_name), m_new_name(new_name), m_layer_node(layer_node), m_layer(layer) { }
            virtual void run() override { }
            virtual size_t memory() override { return 0; }
            virtual void undo() override
            {
                m_layer_node->set_name(m_old_name.c_str());
                m_layer->m_name = m_old_name;
            }
            virtual Action* get_redo() override
            {
                return new ActionLayerRename(m_new_name, m_old_name, m_layer_node, m_layer);
            }
        };
        auto layer_node = std::static_pointer_cast<NodeLayer>(layers->m_current_layer->shared_from_this());
        auto* layer = canvas->m_canvas->m_layers[canvas->m_canvas->m_current_layer_idx].get();
        ActionManager::add(new ActionLayerRename(layers->m_current_layer->m_label_text, dialog->get_name(), layer_node, layer));
        layer_node->set_name(dialog->get_name().c_str());
        layer->m_name = dialog->get_name();
        dialog->destroy();
        App::I->hideKeyboard();
    };
    dialog->btn_cancel->on_click = [this, dialog](Node*)
    {
        dialog->destroy();
        App::I->hideKeyboard();
    };
}

void App::dialog_preset_download()
{

}

void App::dialog_ppbr_export()
{
    auto root = layout[main_id];
    auto dialog = root->add_child_ref<NodeDialogExportPPBR>();
    dialog->btn_ok->on_click = [this, dialog] (Node*) {
        NodePanelBrushPreset::PPBRInfo info;
        info.author = dialog->txt_author->m_text;
        info.url = dialog->txt_url->m_text;
        info.email = dialog->txt_email->m_text;
        info.descr = dialog->txt_descr->m_text;
        info.header_image = dialog->m_header_image;
        info.dest_path = dialog->m_dest_path;
        if (dialog->export_check)
            info.export_data = dialog->export_check->checked;
#if __IOS__ || __WEB__
        App::I->pick_file_save("ppbr", "exported-brushes",
            [this, dialog, info] (std::string path) {
                presets->export_ppbr(path, info);
            },
            [dialog] (const std::string& path, bool saved) {
                if (saved)
                    dialog->destroy();
            }
        );
#else
        App::I->pick_file_save({ "ppbr" }, [this, dialog, info] (std::string path) {
            std::thread([this, path, dialog, info] {
                BT_SetTerminate();
                presets->export_ppbr(path, info);
                dialog->destroy();
                App::I->message_box("Export PPBR", "Brushes exported to:\n" + path);
            }).detach();
        });
#endif
    };
}

void App::dialog_timelapse_export()
{
#if __IOS__ || __WEB__
    pick_file_save("mp4", doc_name + "-timelapse",
        [this](std::string path) {
            rec_export(path);
        },
        [this](const std::string& path, bool saved) {
            message_box("Export Timelapse", "Timelapse exported succesfully.");
        }
    );
#else
    pick_file_save({ "mp4" }, [this](std::string path) {
        std::thread([this, path] {
            BT_SetTerminate();
            rec_export(path);
            message_box("Export Timelapse", "Timelapse exported to: " + path);
        }).detach();
    });
#endif
}

void App::dialog_export_mp4()
{
    std::thread([this] {
        const int video_width = 1024;
        const int video_height = 512;
        const int video_frames = 500;

        auto pb = show_progress("Export MP4", video_frames);

        ISVCEncoder* encoder;
        int rv = WelsCreateSVCEncoder(&encoder);

        //SEncParamBase param;
        //memset(&param, 0, sizeof(SEncParamBase));
        //param.iUsageType = EUsageType::CAMERA_VIDEO_REAL_TIME; //from EUsageType enum
        //param.fMaxFrameRate = 25;
        //param.iPicWidth = 400;
        //param.iPicHeight = 400;
        //param.iTargetBitrate = 5000000;
        //param.iRCMode = RC_TIMESTAMP_MODE;
        //encoder->Initialize(&param);

            //Encoder params
        SEncParamExt param;
        encoder->GetDefaultParams(&param);
        param.iUsageType = CAMERA_VIDEO_REAL_TIME;
        param.fMaxFrameRate = 25.f;
        param.iLtrMarkPeriod = 75;
        param.iPicWidth = 1024;
        param.iPicHeight = 512;
        param.iTargetBitrate = 1000 << 10;
        param.bEnableDenoise = false;
        param.iSpatialLayerNum = 1;
        param.bUseLoadBalancing = false;
        param.bEnableSceneChangeDetect = false;
        param.bEnableBackgroundDetection = false;
        param.bEnableAdaptiveQuant = false;
        param.bEnableFrameSkip = false;
        param.iMultipleThreadIdc = 0;
        //param.uiIntraPeriod = 10;

        for (int i = 0; i < param.iSpatialLayerNum; i++)
        {
            param.sSpatialLayers[i].iVideoWidth = param.iPicWidth >> (param.iSpatialLayerNum - 1 - i);
            param.sSpatialLayers[i].iVideoHeight = param.iPicHeight >> (param.iSpatialLayerNum - 1 - i);
            param.sSpatialLayers[i].fFrameRate = 25.f;
            param.sSpatialLayers[i].iSpatialBitrate = param.iTargetBitrate;
            param.sSpatialLayers[i].uiProfileIdc = PRO_BASELINE;
            param.sSpatialLayers[i].uiLevelIdc = LEVEL_4_2;
            param.sSpatialLayers[i].iDLayerQp = 42;

            //SSliceArgument sliceArg;
            //sliceArg.uiSliceMode = SM_FIXEDSLCNUM_SLICE;
            //sliceArg.uiSliceNum = 0; 
            //param.sSpatialLayers[i].sSliceArgument = sliceArg;
        }

        param.uiMaxNalSize = 1500;
        param.iTargetBitrate *= param.iSpatialLayerNum;
        encoder->InitializeExt(&param);


        int trace_level = WELS_LOG_ERROR;
        encoder->SetOption(ENCODER_OPTION_TRACE_LEVEL, &trace_level);
        int videoFormat = videoFormatI420;
        encoder->SetOption(ENCODER_OPTION_DATAFORMAT, &videoFormat);

        int frameSize = param.iPicWidth * param.iPicHeight * 3 / 2;
        std::vector<uint8_t> buf(frameSize);

        SFrameBSInfo info;
        memset(&info, 0, sizeof(SFrameBSInfo));
        SSourcePicture pic;
        memset(&pic, 0, sizeof(SSourcePicture));
        pic.iPicWidth = param.iPicWidth;
        pic.iPicHeight = param.iPicHeight;
        pic.iColorFormat = videoFormatI420;
        pic.iStride[0] = pic.iPicWidth;
        pic.iStride[1] = pic.iStride[2] = pic.iPicWidth >> 1;
        pic.pData[0] = buf.data();
        pic.pData[1] = pic.pData[0] + (param.iPicWidth * param.iPicHeight);
        pic.pData[2] = pic.pData[1] + (param.iPicWidth * param.iPicHeight >> 2);

        std::string mp4_path = data_path + "/out.mp4";

        MP4FileHandle mp4 = MP4Create(mp4_path.c_str());
        MP4TrackId mp4_track = -1;
        MP4SetTimeScale(mp4, 90000);

        const int frames = 500;
        //std::ofstream f("out.h264", std::ios::binary);
        for (int num = 0; num < frames; num++)
        {
            pb->increment();
            printf("encoding %.2f%%\r", (float)num / (float)(frames - 1) * 100.f);

            float value = sinf((float)num / (float)frames * 10.f);
            for (int y = 0; y < param.iPicHeight; y++)
                for (int x = 0; x < param.iPicWidth; x++)
                    buf[y * param.iPicWidth + x] = (((y + num / 4) / 10) % 2) * (255.f * value);

            //prepare input data
            rv = encoder->EncodeFrame(&pic, &info);
            //pic.uiTimeStamp += (1.f/25.f) * 1000.f;
            //assert (rv == cmResultSuccess);
            if (info.eFrameType != videoFrameTypeSkip)
            {
                //output bitstream handling
                for (int layer = 0; layer < info.iLayerNum; layer++)
                {
                    size_t bs_size = 0;
                    for (int nal = 0; nal < info.sLayerInfo[layer].iNalCount; nal++)
                    {
                        std::array<uint8_t, 5> nalu_bytes;
                        for (int i = 0; i < nalu_bytes.size(); i++)
                            nalu_bytes[i] = info.sLayerInfo[layer].pBsBuf[bs_size + i];
                        if (nalu_bytes[4] == 0x67) // SPS
                        {
                            uint8_t avc_profile = info.sLayerInfo[layer].pBsBuf[bs_size + 5];
                            uint8_t avc_profile_compat = info.sLayerInfo[layer].pBsBuf[bs_size + 6];
                            uint8_t avc_level = info.sLayerInfo[layer].pBsBuf[bs_size + 7];
                            if (mp4_track == -1)
                            {
                                mp4_track = MP4AddH264VideoTrack(mp4, 90000, 90000 / 25,
                                    param.iPicWidth, param.iPicHeight,
                                    avc_profile, avc_profile_compat, avc_level, 3);
                                MP4SetVideoProfileLevel(mp4, 1);
                            }
                            MP4AddH264SequenceParameterSet(mp4, mp4_track, info.sLayerInfo[layer].pBsBuf + bs_size + 4,
                                info.sLayerInfo[layer].pNalLengthInByte[nal] - 4);
                        }
                        else if (nalu_bytes[4] == 0x68) // PPS
                        {
                            MP4AddH264PictureParameterSet(mp4, mp4_track, info.sLayerInfo[layer].pBsBuf + bs_size + 4,
                                info.sLayerInfo[layer].pNalLengthInByte[nal] - 4);
                        }
                        else
                        {
                            int nalu_sz = info.sLayerInfo[layer].pNalLengthInByte[nal];
                            uint8_t* data = info.sLayerInfo[layer].pBsBuf + bs_size;
                            *(uint32_t*)data = BinaryStream::htonx(nalu_sz - 4);
                            bool sync = false;
                            if (nalu_bytes[4] == 0x65) // I-frame
                                sync = true;
                            else // 0x61 P-frame
                                sync = false;
                            MP4WriteSample(mp4, mp4_track, data, nalu_sz, MP4_INVALID_DURATION, 0, sync);
                        }
                        //printf("nalu %x\n", nalu_bytes[4]);
                        bs_size += info.sLayerInfo[layer].pNalLengthInByte[nal];
                    }
                    //f.write((const char*)info.sLayerInfo[layer].pBsBuf, bs_size);
                }
            }
        }
        //f.close();

        printf("\n");

        MP4Close(mp4);

        if (encoder)
        {
            encoder->Uninitialize();
            WelsDestroySVCEncoder(encoder);
        }

        pb->destroy();
    }).detach();
}