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🎥 Command line media player
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130/* * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include <string.h>#include <assert.h>#include <limits.h>
#include "mpv_talloc.h"
#include "common/common.h"#include "img_convert.h"#include "osd.h"#include "video/img_format.h"#include "video/mp_image.h"#include "video/sws_utils.h"
void mp_blur_rgba_sub_bitmap(struct sub_bitmap *d, double gblur){ struct mp_image *tmp1 = mp_image_alloc(IMGFMT_BGRA, d->w, d->h); MP_HANDLE_OOM(tmp1); { struct mp_image s = {0}; mp_image_setfmt(&s, IMGFMT_BGRA); mp_image_set_size(&s, d->w, d->h); s.stride[0] = d->stride; s.planes[0] = d->bitmap;
mp_image_copy(tmp1, &s);
mp_image_sw_blur_scale(&s, tmp1, gblur); } talloc_free(tmp1);}
bool mp_sub_bitmaps_bb(struct sub_bitmaps *imgs, struct mp_rect *out_bb){ struct mp_rect bb = {INT_MAX, INT_MAX, INT_MIN, INT_MIN}; for (int n = 0; n < imgs->num_parts; n++) { struct sub_bitmap *p = &imgs->parts[n]; bb.x0 = MPMIN(bb.x0, p->x); bb.y0 = MPMIN(bb.y0, p->y); bb.x1 = MPMAX(bb.x1, p->x + p->dw); bb.y1 = MPMAX(bb.y1, p->y + p->dh); }
// avoid degenerate bounding box if empty bb.x0 = MPMIN(bb.x0, bb.x1); bb.y0 = MPMIN(bb.y0, bb.y1);
*out_bb = bb;
return bb.x0 < bb.x1 && bb.y0 < bb.y1;}
// Merge bounding rectangles if they're closer than the given amount of pixels.// Avoids having too many rectangles due to spacing between letter.#define MERGE_RC_PIXELS 50
static void remove_intersecting_rcs(struct mp_rect *list, int *count){ int M = MERGE_RC_PIXELS; bool changed = true; while (changed) { changed = false; for (int a = 0; a < *count; a++) { struct mp_rect *rc_a = &list[a]; for (int b = *count - 1; b > a; b--) { struct mp_rect *rc_b = &list[b]; if (rc_a->x0 - M <= rc_b->x1 && rc_a->x1 + M >= rc_b->x0 && rc_a->y0 - M <= rc_b->y1 && rc_a->y1 + M >= rc_b->y0) { mp_rect_union(rc_a, rc_b); MP_TARRAY_REMOVE_AT(list, *count, b); changed = true; } } } }}
// Cluster the given subrectangles into a small numbers of bounding rectangles,// and store them into list. E.g. when subtitles and toptitles are visible at// the same time, there should be two bounding boxes, so that the video between// the text is left untouched (need to resample less pixels -> faster).// Returns number of rectangles added to out_rc_list (<= rc_list_count)// NOTE: some callers assume that sub bitmaps are never split or partially// covered by returned rectangles.int mp_get_sub_bb_list(struct sub_bitmaps *sbs, struct mp_rect *out_rc_list, int rc_list_count){ int M = MERGE_RC_PIXELS; int num_rc = 0; for (int n = 0; n < sbs->num_parts; n++) { struct sub_bitmap *sb = &sbs->parts[n]; struct mp_rect bb = {sb->x, sb->y, sb->x + sb->dw, sb->y + sb->dh}; bool intersects = false; for (int r = 0; r < num_rc; r++) { struct mp_rect *rc = &out_rc_list[r]; if ((bb.x0 - M <= rc->x1 && bb.x1 + M >= rc->x0 && bb.y0 - M <= rc->y1 && bb.y1 + M >= rc->y0) || num_rc == rc_list_count) { mp_rect_union(rc, &bb); intersects = true; break; } } if (!intersects) { out_rc_list[num_rc++] = bb; remove_intersecting_rcs(out_rc_list, &num_rc); } } remove_intersecting_rcs(out_rc_list, &num_rc); return num_rc;}