| 1 | /* |
| 2 | * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
| 3 | * Copyright (c) 2013 Clément Bœsch <u pkh me> |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with FFmpeg; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * Simple post processing filter |
| 25 | * |
| 26 | * This implementation is based on an algorithm described in |
| 27 | * "Aria Nosratinia Embedded Post-Processing for |
| 28 | * Enhancement of Compressed Images (1999)" |
| 29 | * |
| 30 | * Originally written by Michael Niedermayer for the MPlayer project, and |
| 31 | * ported by Clément Bœsch for FFmpeg. |
| 32 | */ |
| 33 | |
| 34 | #include "libavutil/avassert.h" |
| 35 | #include "libavutil/imgutils.h" |
| 36 | #include "libavutil/opt.h" |
| 37 | #include "libavutil/pixdesc.h" |
| 38 | #include "internal.h" |
| 39 | #include "vf_spp.h" |
| 40 | |
| 41 | enum mode { |
| 42 | MODE_HARD, |
| 43 | MODE_SOFT, |
| 44 | NB_MODES |
| 45 | }; |
| 46 | |
| 47 | static const AVClass *child_class_next(const AVClass *prev) |
| 48 | { |
| 49 | return prev ? NULL : avcodec_dct_get_class(); |
| 50 | } |
| 51 | |
| 52 | static void *child_next(void *obj, void *prev) |
| 53 | { |
| 54 | SPPContext *s = obj; |
| 55 | return prev ? NULL : s->dct; |
| 56 | } |
| 57 | |
| 58 | #define OFFSET(x) offsetof(SPPContext, x) |
| 59 | #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM |
| 60 | static const AVOption spp_options[] = { |
| 61 | { "quality", "set quality", OFFSET(log2_count), AV_OPT_TYPE_INT, {.i64 = 3}, 0, MAX_LEVEL, FLAGS }, |
| 62 | { "qp", "force a constant quantizer parameter", OFFSET(qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 63, FLAGS }, |
| 63 | { "mode", "set thresholding mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64 = MODE_HARD}, 0, NB_MODES - 1, FLAGS, "mode" }, |
| 64 | { "hard", "hard thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_HARD}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
| 65 | { "soft", "soft thresholding", 0, AV_OPT_TYPE_CONST, {.i64 = MODE_SOFT}, INT_MIN, INT_MAX, FLAGS, "mode" }, |
| 66 | { "use_bframe_qp", "use B-frames' QP", OFFSET(use_bframe_qp), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, FLAGS }, |
| 67 | { NULL } |
| 68 | }; |
| 69 | |
| 70 | static const AVClass spp_class = { |
| 71 | .class_name = "spp", |
| 72 | .item_name = av_default_item_name, |
| 73 | .option = spp_options, |
| 74 | .version = LIBAVUTIL_VERSION_INT, |
| 75 | .category = AV_CLASS_CATEGORY_FILTER, |
| 76 | .child_class_next = child_class_next, |
| 77 | .child_next = child_next, |
| 78 | }; |
| 79 | |
| 80 | // XXX: share between filters? |
| 81 | DECLARE_ALIGNED(8, static const uint8_t, ldither)[8][8] = { |
| 82 | { 0, 48, 12, 60, 3, 51, 15, 63 }, |
| 83 | { 32, 16, 44, 28, 35, 19, 47, 31 }, |
| 84 | { 8, 56, 4, 52, 11, 59, 7, 55 }, |
| 85 | { 40, 24, 36, 20, 43, 27, 39, 23 }, |
| 86 | { 2, 50, 14, 62, 1, 49, 13, 61 }, |
| 87 | { 34, 18, 46, 30, 33, 17, 45, 29 }, |
| 88 | { 10, 58, 6, 54, 9, 57, 5, 53 }, |
| 89 | { 42, 26, 38, 22, 41, 25, 37, 21 }, |
| 90 | }; |
| 91 | |
| 92 | static const uint8_t offset[127][2] = { |
| 93 | {0,0}, |
| 94 | {0,0}, {4,4}, // quality = 1 |
| 95 | {0,0}, {2,2}, {6,4}, {4,6}, // quality = 2 |
| 96 | {0,0}, {5,1}, {2,2}, {7,3}, {4,4}, {1,5}, {6,6}, {3,7}, // quality = 3 |
| 97 | |
| 98 | {0,0}, {4,0}, {1,1}, {5,1}, {3,2}, {7,2}, {2,3}, {6,3}, // quality = 4 |
| 99 | {0,4}, {4,4}, {1,5}, {5,5}, {3,6}, {7,6}, {2,7}, {6,7}, |
| 100 | |
| 101 | {0,0}, {0,2}, {0,4}, {0,6}, {1,1}, {1,3}, {1,5}, {1,7}, // quality = 5 |
| 102 | {2,0}, {2,2}, {2,4}, {2,6}, {3,1}, {3,3}, {3,5}, {3,7}, |
| 103 | {4,0}, {4,2}, {4,4}, {4,6}, {5,1}, {5,3}, {5,5}, {5,7}, |
| 104 | {6,0}, {6,2}, {6,4}, {6,6}, {7,1}, {7,3}, {7,5}, {7,7}, |
| 105 | |
| 106 | {0,0}, {4,4}, {0,4}, {4,0}, {2,2}, {6,6}, {2,6}, {6,2}, // quality = 6 |
| 107 | {0,2}, {4,6}, {0,6}, {4,2}, {2,0}, {6,4}, {2,4}, {6,0}, |
| 108 | {1,1}, {5,5}, {1,5}, {5,1}, {3,3}, {7,7}, {3,7}, {7,3}, |
| 109 | {1,3}, {5,7}, {1,7}, {5,3}, {3,1}, {7,5}, {3,5}, {7,1}, |
| 110 | {0,1}, {4,5}, {0,5}, {4,1}, {2,3}, {6,7}, {2,7}, {6,3}, |
| 111 | {0,3}, {4,7}, {0,7}, {4,3}, {2,1}, {6,5}, {2,5}, {6,1}, |
| 112 | {1,0}, {5,4}, {1,4}, {5,0}, {3,2}, {7,6}, {3,6}, {7,2}, |
| 113 | {1,2}, {5,6}, {1,6}, {5,2}, {3,0}, {7,4}, {3,4}, {7,0}, |
| 114 | }; |
| 115 | |
| 116 | static void hardthresh_c(int16_t dst[64], const int16_t src[64], |
| 117 | int qp, const uint8_t *permutation) |
| 118 | { |
| 119 | int i; |
| 120 | int bias = 0; // FIXME |
| 121 | |
| 122 | unsigned threshold1 = qp * ((1<<4) - bias) - 1; |
| 123 | unsigned threshold2 = threshold1 << 1; |
| 124 | |
| 125 | memset(dst, 0, 64 * sizeof(dst[0])); |
| 126 | dst[0] = (src[0] + 4) >> 3; |
| 127 | |
| 128 | for (i = 1; i < 64; i++) { |
| 129 | int level = src[i]; |
| 130 | if (((unsigned)(level + threshold1)) > threshold2) { |
| 131 | const int j = permutation[i]; |
| 132 | dst[j] = (level + 4) >> 3; |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | static void softthresh_c(int16_t dst[64], const int16_t src[64], |
| 138 | int qp, const uint8_t *permutation) |
| 139 | { |
| 140 | int i; |
| 141 | int bias = 0; //FIXME |
| 142 | |
| 143 | unsigned threshold1 = qp * ((1<<4) - bias) - 1; |
| 144 | unsigned threshold2 = threshold1 << 1; |
| 145 | |
| 146 | memset(dst, 0, 64 * sizeof(dst[0])); |
| 147 | dst[0] = (src[0] + 4) >> 3; |
| 148 | |
| 149 | for (i = 1; i < 64; i++) { |
| 150 | int level = src[i]; |
| 151 | if (((unsigned)(level + threshold1)) > threshold2) { |
| 152 | const int j = permutation[i]; |
| 153 | if (level > 0) dst[j] = (level - threshold1 + 4) >> 3; |
| 154 | else dst[j] = (level + threshold1 + 4) >> 3; |
| 155 | } |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | static void store_slice_c(uint8_t *dst, const int16_t *src, |
| 160 | int dst_linesize, int src_linesize, |
| 161 | int width, int height, int log2_scale, |
| 162 | const uint8_t dither[8][8]) |
| 163 | { |
| 164 | int y, x; |
| 165 | |
| 166 | #define STORE(pos) do { \ |
| 167 | temp = ((src[x + y*src_linesize + pos] << log2_scale) + d[pos]) >> 6; \ |
| 168 | if (temp & 0x100) \ |
| 169 | temp = ~(temp >> 31); \ |
| 170 | dst[x + y*dst_linesize + pos] = temp; \ |
| 171 | } while (0) |
| 172 | |
| 173 | for (y = 0; y < height; y++) { |
| 174 | const uint8_t *d = dither[y]; |
| 175 | for (x = 0; x < width; x += 8) { |
| 176 | int temp; |
| 177 | STORE(0); |
| 178 | STORE(1); |
| 179 | STORE(2); |
| 180 | STORE(3); |
| 181 | STORE(4); |
| 182 | STORE(5); |
| 183 | STORE(6); |
| 184 | STORE(7); |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | static inline void add_block(int16_t *dst, int linesize, const int16_t block[64]) |
| 190 | { |
| 191 | int y; |
| 192 | |
| 193 | for (y = 0; y < 8; y++) { |
| 194 | *(uint32_t *)&dst[0 + y*linesize] += *(uint32_t *)&block[0 + y*8]; |
| 195 | *(uint32_t *)&dst[2 + y*linesize] += *(uint32_t *)&block[2 + y*8]; |
| 196 | *(uint32_t *)&dst[4 + y*linesize] += *(uint32_t *)&block[4 + y*8]; |
| 197 | *(uint32_t *)&dst[6 + y*linesize] += *(uint32_t *)&block[6 + y*8]; |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | // XXX: export the function? |
| 202 | static inline int norm_qscale(int qscale, int type) |
| 203 | { |
| 204 | switch (type) { |
| 205 | case FF_QSCALE_TYPE_MPEG1: return qscale; |
| 206 | case FF_QSCALE_TYPE_MPEG2: return qscale >> 1; |
| 207 | case FF_QSCALE_TYPE_H264: return qscale >> 2; |
| 208 | case FF_QSCALE_TYPE_VP56: return (63 - qscale + 2) >> 2; |
| 209 | } |
| 210 | return qscale; |
| 211 | } |
| 212 | |
| 213 | static void filter(SPPContext *p, uint8_t *dst, uint8_t *src, |
| 214 | int dst_linesize, int src_linesize, int width, int height, |
| 215 | const uint8_t *qp_table, int qp_stride, int is_luma) |
| 216 | { |
| 217 | int x, y, i; |
| 218 | const int count = 1 << p->log2_count; |
| 219 | const int linesize = is_luma ? p->temp_linesize : FFALIGN(width+16, 16); |
| 220 | DECLARE_ALIGNED(16, uint64_t, block_align)[32]; |
| 221 | int16_t *block = (int16_t *)block_align; |
| 222 | int16_t *block2 = (int16_t *)(block_align + 16); |
| 223 | |
| 224 | for (y = 0; y < height; y++) { |
| 225 | int index = 8 + 8*linesize + y*linesize; |
| 226 | memcpy(p->src + index, src + y*src_linesize, width); |
| 227 | for (x = 0; x < 8; x++) { |
| 228 | p->src[index - x - 1] = p->src[index + x ]; |
| 229 | p->src[index + width + x ] = p->src[index + width - x - 1]; |
| 230 | } |
| 231 | } |
| 232 | for (y = 0; y < 8; y++) { |
| 233 | memcpy(p->src + ( 7-y)*linesize, p->src + ( y+8)*linesize, linesize); |
| 234 | memcpy(p->src + (height+8+y)*linesize, p->src + (height-y+7)*linesize, linesize); |
| 235 | } |
| 236 | |
| 237 | for (y = 0; y < height + 8; y += 8) { |
| 238 | memset(p->temp + (8 + y) * linesize, 0, 8 * linesize * sizeof(*p->temp)); |
| 239 | for (x = 0; x < width + 8; x += 8) { |
| 240 | int qp; |
| 241 | |
| 242 | if (p->qp) { |
| 243 | qp = p->qp; |
| 244 | } else{ |
| 245 | const int qps = 3 + is_luma; |
| 246 | qp = qp_table[(FFMIN(x, width - 1) >> qps) + (FFMIN(y, height - 1) >> qps) * qp_stride]; |
| 247 | qp = FFMAX(1, norm_qscale(qp, p->qscale_type)); |
| 248 | } |
| 249 | for (i = 0; i < count; i++) { |
| 250 | const int x1 = x + offset[i + count - 1][0]; |
| 251 | const int y1 = y + offset[i + count - 1][1]; |
| 252 | const int index = x1 + y1*linesize; |
| 253 | p->dct->get_pixels(block, p->src + index, linesize); |
| 254 | p->dct->fdct(block); |
| 255 | p->requantize(block2, block, qp, p->dct->idct_permutation); |
| 256 | p->dct->idct(block2); |
| 257 | add_block(p->temp + index, linesize, block2); |
| 258 | } |
| 259 | } |
| 260 | if (y) |
| 261 | p->store_slice(dst + (y - 8) * dst_linesize, p->temp + 8 + y*linesize, |
| 262 | dst_linesize, linesize, width, |
| 263 | FFMIN(8, height + 8 - y), MAX_LEVEL - p->log2_count, |
| 264 | ldither); |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | static int query_formats(AVFilterContext *ctx) |
| 269 | { |
| 270 | static const enum PixelFormat pix_fmts[] = { |
| 271 | AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, |
| 272 | AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, |
| 273 | AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P, |
| 274 | AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, |
| 275 | AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ440P, |
| 276 | AV_PIX_FMT_NONE |
| 277 | }; |
| 278 | ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | static int config_input(AVFilterLink *inlink) |
| 283 | { |
| 284 | SPPContext *spp = inlink->dst->priv; |
| 285 | const int h = FFALIGN(inlink->h + 16, 16); |
| 286 | const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); |
| 287 | |
| 288 | spp->hsub = desc->log2_chroma_w; |
| 289 | spp->vsub = desc->log2_chroma_h; |
| 290 | spp->temp_linesize = FFALIGN(inlink->w + 16, 16); |
| 291 | spp->temp = av_malloc_array(spp->temp_linesize, h * sizeof(*spp->temp)); |
| 292 | spp->src = av_malloc_array(spp->temp_linesize, h * sizeof(*spp->src)); |
| 293 | if (!spp->use_bframe_qp) { |
| 294 | /* we are assuming here the qp blocks will not be smaller that 16x16 */ |
| 295 | spp->non_b_qp_alloc_size = FF_CEIL_RSHIFT(inlink->w, 4) * FF_CEIL_RSHIFT(inlink->h, 4); |
| 296 | spp->non_b_qp_table = av_calloc(spp->non_b_qp_alloc_size, sizeof(*spp->non_b_qp_table)); |
| 297 | if (!spp->non_b_qp_table) |
| 298 | return AVERROR(ENOMEM); |
| 299 | } |
| 300 | if (!spp->temp || !spp->src) |
| 301 | return AVERROR(ENOMEM); |
| 302 | return 0; |
| 303 | } |
| 304 | |
| 305 | static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| 306 | { |
| 307 | AVFilterContext *ctx = inlink->dst; |
| 308 | SPPContext *spp = ctx->priv; |
| 309 | AVFilterLink *outlink = ctx->outputs[0]; |
| 310 | AVFrame *out = in; |
| 311 | int qp_stride = 0; |
| 312 | const int8_t *qp_table = NULL; |
| 313 | |
| 314 | /* if we are not in a constant user quantizer mode and we don't want to use |
| 315 | * the quantizers from the B-frames (B-frames often have a higher QP), we |
| 316 | * need to save the qp table from the last non B-frame; this is what the |
| 317 | * following code block does */ |
| 318 | if (!spp->qp) { |
| 319 | qp_table = av_frame_get_qp_table(in, &qp_stride, &spp->qscale_type); |
| 320 | |
| 321 | if (qp_table && !spp->use_bframe_qp && in->pict_type != AV_PICTURE_TYPE_B) { |
| 322 | int w, h; |
| 323 | |
| 324 | /* if the qp stride is not set, it means the QP are only defined on |
| 325 | * a line basis */ |
| 326 | if (!qp_stride) { |
| 327 | w = FF_CEIL_RSHIFT(inlink->w, 4); |
| 328 | h = 1; |
| 329 | } else { |
| 330 | w = FF_CEIL_RSHIFT(qp_stride, 4); |
| 331 | h = FF_CEIL_RSHIFT(inlink->h, 4); |
| 332 | } |
| 333 | av_assert0(w * h <= spp->non_b_qp_alloc_size); |
| 334 | memcpy(spp->non_b_qp_table, qp_table, w * h); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | if (spp->log2_count && !ctx->is_disabled) { |
| 339 | if (!spp->use_bframe_qp && spp->non_b_qp_table) |
| 340 | qp_table = spp->non_b_qp_table; |
| 341 | |
| 342 | if (qp_table || spp->qp) { |
| 343 | const int cw = FF_CEIL_RSHIFT(inlink->w, spp->hsub); |
| 344 | const int ch = FF_CEIL_RSHIFT(inlink->h, spp->vsub); |
| 345 | |
| 346 | /* get a new frame if in-place is not possible or if the dimensions |
| 347 | * are not multiple of 8 */ |
| 348 | if (!av_frame_is_writable(in) || (inlink->w & 7) || (inlink->h & 7)) { |
| 349 | const int aligned_w = FFALIGN(inlink->w, 8); |
| 350 | const int aligned_h = FFALIGN(inlink->h, 8); |
| 351 | |
| 352 | out = ff_get_video_buffer(outlink, aligned_w, aligned_h); |
| 353 | if (!out) { |
| 354 | av_frame_free(&in); |
| 355 | return AVERROR(ENOMEM); |
| 356 | } |
| 357 | av_frame_copy_props(out, in); |
| 358 | out->width = in->width; |
| 359 | out->height = in->height; |
| 360 | } |
| 361 | |
| 362 | filter(spp, out->data[0], in->data[0], out->linesize[0], in->linesize[0], inlink->w, inlink->h, qp_table, qp_stride, 1); |
| 363 | filter(spp, out->data[1], in->data[1], out->linesize[1], in->linesize[1], cw, ch, qp_table, qp_stride, 0); |
| 364 | filter(spp, out->data[2], in->data[2], out->linesize[2], in->linesize[2], cw, ch, qp_table, qp_stride, 0); |
| 365 | emms_c(); |
| 366 | } |
| 367 | } |
| 368 | |
| 369 | if (in != out) { |
| 370 | if (in->data[3]) |
| 371 | av_image_copy_plane(out->data[3], out->linesize[3], |
| 372 | in ->data[3], in ->linesize[3], |
| 373 | inlink->w, inlink->h); |
| 374 | av_frame_free(&in); |
| 375 | } |
| 376 | return ff_filter_frame(outlink, out); |
| 377 | } |
| 378 | |
| 379 | static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
| 380 | char *res, int res_len, int flags) |
| 381 | { |
| 382 | SPPContext *spp = ctx->priv; |
| 383 | |
| 384 | if (!strcmp(cmd, "level")) { |
| 385 | if (!strcmp(args, "max")) |
| 386 | spp->log2_count = MAX_LEVEL; |
| 387 | else |
| 388 | spp->log2_count = av_clip(strtol(args, NULL, 10), 0, MAX_LEVEL); |
| 389 | return 0; |
| 390 | } |
| 391 | return AVERROR(ENOSYS); |
| 392 | } |
| 393 | |
| 394 | static av_cold int init_dict(AVFilterContext *ctx, AVDictionary **opts) |
| 395 | { |
| 396 | SPPContext *spp = ctx->priv; |
| 397 | int ret; |
| 398 | |
| 399 | spp->avctx = avcodec_alloc_context3(NULL); |
| 400 | spp->dct = avcodec_dct_alloc(); |
| 401 | if (!spp->avctx || !spp->dct) |
| 402 | return AVERROR(ENOMEM); |
| 403 | |
| 404 | if (opts) { |
| 405 | AVDictionaryEntry *e = NULL; |
| 406 | |
| 407 | while ((e = av_dict_get(*opts, "", e, AV_DICT_IGNORE_SUFFIX))) { |
| 408 | if ((ret = av_opt_set(spp->dct, e->key, e->value, 0)) < 0) |
| 409 | return ret; |
| 410 | } |
| 411 | av_dict_free(opts); |
| 412 | } |
| 413 | |
| 414 | avcodec_dct_init(spp->dct); |
| 415 | spp->store_slice = store_slice_c; |
| 416 | switch (spp->mode) { |
| 417 | case MODE_HARD: spp->requantize = hardthresh_c; break; |
| 418 | case MODE_SOFT: spp->requantize = softthresh_c; break; |
| 419 | } |
| 420 | if (ARCH_X86) |
| 421 | ff_spp_init_x86(spp); |
| 422 | return 0; |
| 423 | } |
| 424 | |
| 425 | static av_cold void uninit(AVFilterContext *ctx) |
| 426 | { |
| 427 | SPPContext *spp = ctx->priv; |
| 428 | |
| 429 | av_freep(&spp->temp); |
| 430 | av_freep(&spp->src); |
| 431 | if (spp->avctx) { |
| 432 | avcodec_close(spp->avctx); |
| 433 | av_freep(&spp->avctx); |
| 434 | } |
| 435 | av_freep(&spp->dct); |
| 436 | av_freep(&spp->non_b_qp_table); |
| 437 | } |
| 438 | |
| 439 | static const AVFilterPad spp_inputs[] = { |
| 440 | { |
| 441 | .name = "default", |
| 442 | .type = AVMEDIA_TYPE_VIDEO, |
| 443 | .config_props = config_input, |
| 444 | .filter_frame = filter_frame, |
| 445 | }, |
| 446 | { NULL } |
| 447 | }; |
| 448 | |
| 449 | static const AVFilterPad spp_outputs[] = { |
| 450 | { |
| 451 | .name = "default", |
| 452 | .type = AVMEDIA_TYPE_VIDEO, |
| 453 | }, |
| 454 | { NULL } |
| 455 | }; |
| 456 | |
| 457 | AVFilter ff_vf_spp = { |
| 458 | .name = "spp", |
| 459 | .description = NULL_IF_CONFIG_SMALL("Apply a simple post processing filter."), |
| 460 | .priv_size = sizeof(SPPContext), |
| 461 | .init_dict = init_dict, |
| 462 | .uninit = uninit, |
| 463 | .query_formats = query_formats, |
| 464 | .inputs = spp_inputs, |
| 465 | .outputs = spp_outputs, |
| 466 | .process_command = process_command, |
| 467 | .priv_class = &spp_class, |
| 468 | .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, |
| 469 | }; |