mirror of
https://github.com/mpv-player/mpv
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52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
#ifndef MPLAYER_PACK_RECTANGLES_H
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#define MPLAYER_PACK_RECTANGLES_H
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struct pos {
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int x;
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int y;
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};
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struct bitmap_packer {
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int w;
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int h;
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int w_max;
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int h_max;
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int padding;
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int count;
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struct pos *in;
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struct pos *result;
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int used_width;
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int used_height;
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// internal
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int *scratch;
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int asize;
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};
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struct sub_bitmaps;
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// Clear all internal state. Leave the following fields: w_max, h_max
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void packer_reset(struct bitmap_packer *packer);
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// Get the bounding box used for bitmap data (including padding).
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// The bounding box doesn't exceed (0,0)-(packer->w,packer->h).
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void packer_get_bb(struct bitmap_packer *packer, struct pos out_bb[2]);
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/* Reallocate packer->in for at least to desired number of items.
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* Also sets packer->count to the same value.
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*/
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void packer_set_size(struct bitmap_packer *packer, int size);
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/* To use this, set packer->count to number of rectangles, w_max and h_max
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* to maximum output rectangle size, and w and h to start size (may be 0).
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* Write input sizes in packer->in.
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* Resulting packing will be written in packer->result.
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* w and h will be increased if necessary for successful packing.
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* There is a strong guarantee that w and h will be powers of 2 (or set to 0).
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* Return value is -1 if packing failed because w and h were set to max
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* values but that wasn't enough, 1 if w or h was increased, and 0 otherwise.
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*/
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int packer_pack(struct bitmap_packer *packer);
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#endif
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