diff options
Diffstat (limited to 'libvo/filter_kernels.h')
-rw-r--r-- | libvo/filter_kernels.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libvo/filter_kernels.h b/libvo/filter_kernels.h new file mode 100644 index 0000000000..46a392c40a --- /dev/null +++ b/libvo/filter_kernels.h @@ -0,0 +1,45 @@ +/* + * This file is part of mplayer2. + * + * mplayer2 is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * mplayer2 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with mplayer2; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPLAYER_FILTER_KERNELS_H +#define MPLAYER_FILTER_KERNELS_H + +#include <stdbool.h> + +struct filter_kernel { + const char *name; + double radius; + double (*weight)(struct filter_kernel *kernel, double x); + + // The filter params can be changed at runtime. Only used by some filters. + float params[2]; + // The following values are set by mp_init_filter() at runtime. + // Number of coefficients; equals the rounded up radius multiplied with 2. + int size; + double inv_scale; +}; + +extern const struct filter_kernel mp_filter_kernels[]; + +const struct filter_kernel *mp_find_filter_kernel(const char *name); +bool mp_init_filter(struct filter_kernel *filter, const int *sizes, + double scale); +void mp_compute_weights(struct filter_kernel *filter, double f, float *out_w); +void mp_compute_lut(struct filter_kernel *filter, int count, float *out_array); + +#endif /* MPLAYER_FILTER_KERNELS_H */ |