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// Buffer management
static void * Layer_AllocateBitmap(memory *Memory, uint16 Width, uint16 Height, uint16 BytesPerPixel); //
static project_layer * Layer_Init(project_data *File, memory *Memory); // Initializes a layer's name and properties. Add a source manually.
static void Bitmap_CalcPackedDimensions(uint16 Width, uint16 Height, uint16 *WidthP, uint16 *HeightP); // Returns the dimensions a packed bitmap should be in memory.
static uint16 Bitmap_CalcByteOffset(uint16 BytesPerPixel); // Returns the amount of bytes a loop goes through depending on the InstructionMode.
static uint64 Bitmap_CalcTotalBytes(uint16 Width, uint16 Height, uint16 BytesPerPixel); // Returns the total amount of bytes a bitmap takes up.
static void Bitmap_ConvertPacking(void *Buffer, void *DestBuffer, uint16 Width, uint16 Height, uint16 BytesPerPixel, uint16 Which);
static bool32 Source_Generate(project_data *File, memory *Memory, char *Path); // Fills out source info if the source is a supported file.
// Libav (ffmpeg) backend for decoding video
static bool32 AV_IsFileSupported(char *filename); // Tests whether a decoder is available for a given file.
static void AV_Init(char *filename, source *Source, memory *Memory); // Initializes all internal structs and calculates average PTS.
static bool32 AV_LoadVideoFrame(source *Source, memory *Memory, int32 TimelineFrame); // Loads video frame at TimelineFrame.
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