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mpv/sub/img_convert.h
wm4 24bfa82a91 sub: reimplement -spugauss as --sub-gauss
Apparently the -spugauss option was popular. The code originally
implementing this is gone (scaler stuff in spudec.c). Reimplement it
using libswscale to scale and blur image subtitles if the --sub-gauss
option is set.

The code does some rather lazy padding to allow the blur to spread
pixels past the original image bounding box. (This problem exists with
normal bilinear scaling too, but is barely noticable.)

Technically, this doesn't just blur subtitles, but anything RGBA (or
indexed) that enters the OSD rendering path. But only image subtitles
produce these OSD formats currently, so no explicit check is done to
prevent blurring in other cases.
2012-11-25 23:40:07 +01:00

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C

#ifndef MPLAYER_SUB_IMG_CONVERT_H
#define MPLAYER_SUB_IMG_CONVERT_H
#include <stdbool.h>
struct osd_conv_cache;
struct sub_bitmaps;
struct osd_conv_cache *osd_conv_cache_new(void);
// These functions convert from one OSD format to another. On success, they copy
// the converted image data into c, and change imgs to point to the data.
bool osd_conv_idx_to_rgba(struct osd_conv_cache *c, struct sub_bitmaps *imgs);
bool osd_conv_blur_rgba(struct osd_conv_cache *c, struct sub_bitmaps *imgs,
double gblur);
#endif