frame.h

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#pragma once
 
#include "fl/stl/cstring.h"
#include "crgb.h"  // IWYU pragma: keep
#include "fl/stl/shared_ptr.h"         // For FASTLED_SHARED_PTR macros
#include "fl/stl/span.h"
#include "fl/math/xymap.h"  // IWYU pragma: keep
#include "fl/stl/vector.h"
#include "fl/stl/stdint.h"
 
#include "fl/stl/allocator.h"
#include "fl/gfx/draw_mode.h"
#include "fl/codec/pixel.h"
#include "fl/stl/noexcept.h"
 
namespace fl {
 
FASTLED_SHARED_PTR(Frame);
 
// Frames are used to hold led data. This includes an optional alpha channel.
// This object is used by the fx and video engines. Most of the memory used for
// Fx and Video will be located in instances of this class. See
// Frame::SetAllocator() for custom memory allocation.
class Frame {
  public:
    // Frames take up a lot of memory. On some devices like ESP32 there is
    // PSRAM available. You should see allocator.h ->
    // SetPSRamAllocator(...) on setting a custom allocator for these large
    // blocks.
    explicit Frame(int pixels_per_frame);
 
    // Constructor for codec-sourced frames
    Frame(fl::u8* pixels, fl::u16 width, fl::u16 height, PixelFormat format, fl::u32 timestamp = 0);
 
    // Copy constructor
    Frame(const Frame& other) FL_NOEXCEPT;
 
    // Delete copy assignment operator (can't assign due to const member)
    Frame& operator=(const Frame& other) FL_NOEXCEPT = delete;
 
    ~Frame() FL_NOEXCEPT;
    fl::span<CRGB> rgb() { return fl::span<CRGB>(mRgb.data(), mPixelsCount); }
    fl::span<const CRGB> rgb() const { return fl::span<const CRGB>(mRgb.data(), mPixelsCount); }
    size_t size() const { return mPixelsCount; }
    void copy(const Frame &other);
    void interpolate(const Frame &frame1, const Frame &frame2,
                     u8 amountOfFrame2);
    static void interpolate(const Frame &frame1, const Frame &frame2,
                            u8 amountofFrame2, fl::span<CRGB> pixels);
    void draw(fl::span<CRGB> leds, DrawMode draw_mode = DrawMode::DRAW_MODE_OVERWRITE) const;
    void drawXY(fl::span<CRGB> leds, const XYMap &xyMap,
                DrawMode draw_mode = DrawMode::DRAW_MODE_OVERWRITE) const;
    void clear();
 
    // Codec functionality methods
    bool isValid() const;
    fl::u32 getTimestamp() const { return mTimestamp; }
    PixelFormat getFormat() const { return mFormat; }
    fl::u16 getWidth() const { return mWidth; }
    fl::u16 getHeight() const { return mHeight; }
    bool isFromCodec() const { return mIsFromCodec; }
 
  private:
    const size_t mPixelsCount;
    fl::vector_psram<CRGB> mRgb;
 
    // Codec-specific members
    fl::u16 mWidth = 0;
    fl::u16 mHeight = 0;
    PixelFormat mFormat = PixelFormat::RGB888;
    fl::u32 mTimestamp = 0;
    bool mIsFromCodec = false;
 
    // Helper method for pixel format conversion
    void convertPixelsToRgb(fl::u8* pixels, PixelFormat format);
};
 
inline void Frame::copy(const Frame &other) {
    fl::memcpy(mRgb.data(), other.mRgb.data(), other.mPixelsCount * sizeof(CRGB));
}
 
} // namespace fl