mxl-multiviewer/MxlFeed.cpp

#include "MxlFeed.hpp"
#include "PixelFormat.hpp"

namespace
{
constexpr uint32_t MxlPlaceholderUpdateIntervalFrames = 6;
}

MxlFeed::MxlFeed(
    uint32_t frameWidth,
    uint32_t frameHeight)
{
    frame.width = frameWidth;
    frame.height = frameHeight;
    frame.pixels.resize(frame.width * frame.height);
}

bool MxlFeed::isUsingRealSdk() const
{
    return MXL_MULTIVIEWER_ENABLE_MXL_SDK != 0;
}

const VideoFrame& MxlFeed::getFrame(uint32_t frameCounter)
{
    if (lastGeneratedFrame != UINT32_MAX &&
        frameCounter - lastGeneratedFrame <
            MxlPlaceholderUpdateIntervalFrames)
    {
        return frame;
    }

    ++animationFrame;
    lastGeneratedFrame = frameCounter;
    ++version;

    for (uint32_t y = 0; y < frame.height; ++y)
    {
        for (uint32_t x = 0; x < frame.width; ++x)
        {
            const bool stripe =
                ((x + animationFrame) / 16) % 2 == 0;

            const bool border =
                x < 4 ||
                y < 4 ||
                x >= frame.width - 4 ||
                y >= frame.height - 4;

            const uint8_t r = border ? 255 : stripe ? 40 : 10;
            const uint8_t g = border ? 80 : stripe ? 40 : 10;
            const uint8_t b = border ? 255 : stripe ? 60 : 20;
            const RgbColor color =
            {
                r,
                g,
                b
            };

            frame.pixels[y * frame.width + x] =
                packRgba8(color);
        }
    }

    return frame;
}

FeedRuntimeStatus MxlFeed::status() const
{
    return FeedRuntimeStatus::Placeholder;
}

std::string MxlFeed::displayName() const
{
    return "MXL PLACEHOLDER";
}