diff options
Diffstat (limited to 'sub/draw_bmp.c')
| -rw-r--r-- | sub/draw_bmp.c | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/sub/draw_bmp.c b/sub/draw_bmp.c index 23e05464cc..64a12a2da5 100644 --- a/sub/draw_bmp.c +++ b/sub/draw_bmp.c @@ -512,127 +512,4 @@ void mp_draw_sub_bitmaps(struct mp_draw_sub_cache **cache, struct mp_image *dst, } } -struct mp_draw_sub_backup -{ - bool valid; - struct mp_image *image; // backed up image parts - struct line_ext *lines[MP_MAX_PLANES]; // backup range for each line -}; - -struct line_ext { - int x0, x1; // x1 is exclusive -}; - -struct mp_draw_sub_backup *mp_draw_sub_backup_new(void) -{ - return talloc_zero(NULL, struct mp_draw_sub_backup); -} - -// Signal that the full image is valid (nothing to backup). -void mp_draw_sub_backup_reset(struct mp_draw_sub_backup *backup) -{ - backup->valid = true; - if (backup->image) { - for (int p = 0; p < MP_MAX_PLANES; p++) { - int h = backup->image->h; - for (int y = 0; y < h; y++) { - struct line_ext *ext = &backup->lines[p][y]; - ext->x0 = ext->x1 = -1; - } - } - } -} - -static void backup_realloc(struct mp_draw_sub_backup *backup, - struct mp_image *img) -{ - if (backup->image && backup->image->imgfmt == img->imgfmt - && backup->image->w == img->w && backup->image->h == img->h) - return; - - talloc_free_children(backup); - backup->image = mp_image_alloc(img->imgfmt, img->w, img->h); - talloc_steal(backup, backup->image); - for (int p = 0; p < MP_MAX_PLANES; p++) { - backup->lines[p] = talloc_array(backup, struct line_ext, - backup->image->h); - } - mp_draw_sub_backup_reset(backup); -} - -static void copy_line(struct mp_image *dst, struct mp_image *src, - int p, int plane_y, int x0, int x1) -{ - int bits = dst->fmt.bpp[p]; - int xs = p ? dst->chroma_x_shift : 0; - memcpy(dst->planes[p] + plane_y * dst->stride[p] + (x0 >> xs) * bits / 8, - src->planes[p] + plane_y * src->stride[p] + (x0 >> xs) * bits / 8, - ((x1 - x0) >> xs) * bits / 8); -} - -static void backup_rect(struct mp_draw_sub_backup *backup, struct mp_image *img, - int plane, struct mp_rect rc) -{ - if (!align_bbox_for_swscale(img, &rc)) - return; - int ys = plane ? img->chroma_y_shift : 0; - int yp = ys ? ((1 << ys) - 1) : 0; - for (int y = (rc.y0 >> ys); y < ((rc.y1 + yp) >> ys); y++) { - struct line_ext *ext = &backup->lines[plane][y]; - if (ext->x0 == -1) { - copy_line(backup->image, img, plane, y, rc.x0, rc.x1); - ext->x0 = rc.x0; - ext->x1 = rc.x1; - } else { - if (rc.x0 < ext->x0) { - copy_line(backup->image, img, plane, y, rc.x0, ext->x0); - ext->x0 = rc.x0; - } - if (ext->x1 < rc.x1) { - copy_line(backup->image, img, plane, y, ext->x1, rc.x1); - ext->x1 = rc.x1; - } - } - } -} - -void mp_draw_sub_backup_add(struct mp_draw_sub_backup *backup, - struct mp_image *img, struct sub_bitmaps *sbs) -{ - backup_realloc(backup, img); - - for (int p = 0; p < img->num_planes; p++) { - for (int i = 0; i < sbs->num_parts; ++i) { - struct sub_bitmap *sb = &sbs->parts[i]; - struct mp_rect rc = {sb->x, sb->y, sb->x + sb->dw, sb->y + sb->dh}; - backup_rect(backup, img, p, rc); - } - } -} - -bool mp_draw_sub_backup_restore(struct mp_draw_sub_backup *backup, - struct mp_image *buffer) -{ - if (!backup->image || backup->image->imgfmt != buffer->imgfmt - || backup->image->w != buffer->w || backup->image->h != buffer->h - || !backup->valid) - { - backup->valid = false; - return false; - } - struct mp_image *img = backup->image; - for (int p = 0; p < img->num_planes; p++) { - int ys = p ? img->chroma_y_shift : 0; - int yp = ys ? ((1 << ys) - 1) : 0; - int p_h = ((img->h + yp) >> ys); - for (int y = 0; y < p_h; y++) { - struct line_ext *ext = &backup->lines[p][y]; - if (ext->x0 < ext->x1) { - copy_line(buffer, img, p, y, ext->x0, ext->x1); - } - } - } - return true; -} - // vim: ts=4 sw=4 et tw=80 |