nsgif_local_palette()

bool fl::third_party::nsgif_local_palette	(	const nsgif_t *	gif,
		fl::u32	frame,
		fl::u32	table[NSGIF_MAX_COLOURS],
		fl::size *	entries )

Get the local colour palette for a frame.

Frames may have no local palette. In this case they use the global palette. This function returns false if the frame has no local palette.

Colours in same pixel format as nsgif_bitmap_t.

Parameters

[in]	gif	The nsgif_t object.
[in]	frame	The frame to get the palette for.
[out]	table	Client buffer to hold the colour table.
[out]	entries	The number of used entries in the colour table.

Returns

true if a palette is returned, false otherwise.

Definition at line 2020 of file gif.cpp.hpp.

{
    const nsgif_frame *f;
 
    if (frame >= gif->frame_count_partial) {
        return false;
    }
 
    f = &gif->frames[frame];
    if (f->info.local_palette == false) {
        return false;
    }
 
    *entries = 2 << (f->flags & NSGIF_COLOUR_TABLE_SIZE_MASK);
    nsgif__colour_table_decode(table, &gif->colour_layout,
            *entries, gif->buf + f->colour_table_offset);
 
    return true;
}

References fl::third_party::nsgif_frame::colour_table_offset, FL_NOEXCEPT, fl::third_party::nsgif_frame::flags, fl::third_party::nsgif_frame::info, fl::third_party::nsgif_frame_info::local_palette, nsgif__colour_table_decode(), NSGIF_COLOUR_TABLE_SIZE_MASK, and NSGIF_MAX_COLOURS.

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