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path: root/libavcodec/libzvbi-teletextdec.c (plain)
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1/*
2 * Teletext decoding for ffmpeg
3 * Copyright (c) 2005-2010, 2012 Wolfram Gloger
4 * Copyright (c) 2013 Marton Balint
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "avcodec.h"
22#include "libavcodec/ass.h"
23#include "libavcodec/dvbtxt.h"
24#include "libavutil/opt.h"
25#include "libavutil/bprint.h"
26#include "libavutil/internal.h"
27#include "libavutil/intreadwrite.h"
28#include "libavutil/log.h"
29
30#include <libzvbi.h>
31
32#define TEXT_MAXSZ (25 * (56 + 1) * 4 + 2)
33#define VBI_NB_COLORS 40
34#define VBI_TRANSPARENT_BLACK 8
35#define RGBA(r,g,b,a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
36#define VBI_R(rgba) (((rgba) >> 0) & 0xFF)
37#define VBI_G(rgba) (((rgba) >> 8) & 0xFF)
38#define VBI_B(rgba) (((rgba) >> 16) & 0xFF)
39#define VBI_A(rgba) (((rgba) >> 24) & 0xFF)
40#define MAX_BUFFERED_PAGES 25
41#define BITMAP_CHAR_WIDTH 12
42#define BITMAP_CHAR_HEIGHT 10
43#define MAX_SLICES 64
44
45typedef struct TeletextPage
46{
47 AVSubtitleRect *sub_rect;
48 int pgno;
49 int subno;
50 int64_t pts;
51} TeletextPage;
52
53typedef struct TeletextContext
54{
55 AVClass *class;
56 char *pgno;
57 int x_offset;
58 int y_offset;
59 int format_id; /* 0 = bitmap, 1 = text/ass */
60 int chop_top;
61 int sub_duration; /* in msec */
62 int transparent_bg;
63 int opacity;
64 int chop_spaces;
65
66 int lines_processed;
67 TeletextPage *pages;
68 int nb_pages;
69 int64_t pts;
70 int handler_ret;
71
72 vbi_decoder * vbi;
73#ifdef DEBUG
74 vbi_export * ex;
75#endif
76 vbi_sliced sliced[MAX_SLICES];
77
78 int readorder;
79} TeletextContext;
80
81static int chop_spaces_utf8(const unsigned char* t, int len)
82{
83 t += len;
84 while (len > 0) {
85 if (*--t != ' ' || (len-1 > 0 && *(t-1) & 0x80))
86 break;
87 --len;
88 }
89 return len;
90}
91
92static void subtitle_rect_free(AVSubtitleRect **sub_rect)
93{
94 av_freep(&(*sub_rect)->data[0]);
95 av_freep(&(*sub_rect)->data[1]);
96 av_freep(&(*sub_rect)->ass);
97 av_freep(sub_rect);
98}
99
100static char *create_ass_text(TeletextContext *ctx, const char *text)
101{
102 char *dialog;
103 AVBPrint buf;
104
105 av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
106 ff_ass_bprint_text_event(&buf, text, strlen(text), "", 0);
107 if (!av_bprint_is_complete(&buf)) {
108 av_bprint_finalize(&buf, NULL);
109 return NULL;
110 }
111 dialog = ff_ass_get_dialog(ctx->readorder++, 0, NULL, NULL, buf.str);
112 av_bprint_finalize(&buf, NULL);
113 return dialog;
114}
115
116/* Draw a page as text */
117static int gen_sub_text(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top)
118{
119 const char *in;
120 AVBPrint buf;
121 char *vbi_text = av_malloc(TEXT_MAXSZ);
122 int sz;
123
124 if (!vbi_text)
125 return AVERROR(ENOMEM);
126
127 sz = vbi_print_page_region(page, vbi_text, TEXT_MAXSZ-1, "UTF-8",
128 /*table mode*/ TRUE, FALSE,
129 0, chop_top,
130 page->columns, page->rows-chop_top);
131 if (sz <= 0) {
132 av_log(ctx, AV_LOG_ERROR, "vbi_print error\n");
133 av_free(vbi_text);
134 return AVERROR_EXTERNAL;
135 }
136 vbi_text[sz] = '\0';
137 in = vbi_text;
138 av_bprint_init(&buf, 0, TEXT_MAXSZ);
139
140 if (ctx->chop_spaces) {
141 for (;;) {
142 int nl, sz;
143
144 // skip leading spaces and newlines
145 in += strspn(in, " \n");
146 // compute end of row
147 for (nl = 0; in[nl]; ++nl)
148 if (in[nl] == '\n' && (nl==0 || !(in[nl-1] & 0x80)))
149 break;
150 if (!in[nl])
151 break;
152 // skip trailing spaces
153 sz = chop_spaces_utf8(in, nl);
154 av_bprint_append_data(&buf, in, sz);
155 av_bprintf(&buf, "\n");
156 in += nl;
157 }
158 } else {
159 av_bprintf(&buf, "%s\n", vbi_text);
160 }
161 av_free(vbi_text);
162
163 if (!av_bprint_is_complete(&buf)) {
164 av_bprint_finalize(&buf, NULL);
165 return AVERROR(ENOMEM);
166 }
167
168 if (buf.len) {
169 sub_rect->type = SUBTITLE_ASS;
170 sub_rect->ass = create_ass_text(ctx, buf.str);
171
172 if (!sub_rect->ass) {
173 av_bprint_finalize(&buf, NULL);
174 return AVERROR(ENOMEM);
175 }
176 av_log(ctx, AV_LOG_DEBUG, "subtext:%s:txetbus\n", sub_rect->ass);
177 } else {
178 sub_rect->type = SUBTITLE_NONE;
179 }
180 av_bprint_finalize(&buf, NULL);
181 return 0;
182}
183
184static void fix_transparency(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page,
185 int chop_top, int resx, int resy)
186{
187 int iy;
188
189 // Hack for transparency, inspired by VLC code...
190 for (iy = 0; iy < resy; iy++) {
191 uint8_t *pixel = sub_rect->data[0] + iy * sub_rect->linesize[0];
192 vbi_char *vc = page->text + (iy / BITMAP_CHAR_HEIGHT + chop_top) * page->columns;
193 vbi_char *vcnext = vc + page->columns;
194 for (; vc < vcnext; vc++) {
195 uint8_t *pixelnext = pixel + BITMAP_CHAR_WIDTH;
196 switch (vc->opacity) {
197 case VBI_TRANSPARENT_SPACE:
198 memset(pixel, VBI_TRANSPARENT_BLACK, BITMAP_CHAR_WIDTH);
199 break;
200 case VBI_OPAQUE:
201 if (!ctx->transparent_bg)
202 break;
203 case VBI_SEMI_TRANSPARENT:
204 if (ctx->opacity > 0) {
205 if (ctx->opacity < 255)
206 for(; pixel < pixelnext; pixel++)
207 if (*pixel == vc->background)
208 *pixel += VBI_NB_COLORS;
209 break;
210 }
211 case VBI_TRANSPARENT_FULL:
212 for(; pixel < pixelnext; pixel++)
213 if (*pixel == vc->background)
214 *pixel = VBI_TRANSPARENT_BLACK;
215 break;
216 }
217 pixel = pixelnext;
218 }
219 }
220}
221
222/* Draw a page as bitmap */
223static int gen_sub_bitmap(TeletextContext *ctx, AVSubtitleRect *sub_rect, vbi_page *page, int chop_top)
224{
225 int resx = page->columns * BITMAP_CHAR_WIDTH;
226 int resy = (page->rows - chop_top) * BITMAP_CHAR_HEIGHT;
227 uint8_t ci;
228 vbi_char *vc = page->text + (chop_top * page->columns);
229 vbi_char *vcend = page->text + (page->rows * page->columns);
230
231 for (; vc < vcend; vc++) {
232 if (vc->opacity != VBI_TRANSPARENT_SPACE)
233 break;
234 }
235
236 if (vc >= vcend) {
237 av_log(ctx, AV_LOG_DEBUG, "dropping empty page %3x\n", page->pgno);
238 sub_rect->type = SUBTITLE_NONE;
239 return 0;
240 }
241
242 sub_rect->data[0] = av_mallocz(resx * resy);
243 sub_rect->linesize[0] = resx;
244 if (!sub_rect->data[0])
245 return AVERROR(ENOMEM);
246
247 vbi_draw_vt_page_region(page, VBI_PIXFMT_PAL8,
248 sub_rect->data[0], sub_rect->linesize[0],
249 0, chop_top, page->columns, page->rows - chop_top,
250 /*reveal*/ 1, /*flash*/ 1);
251
252 fix_transparency(ctx, sub_rect, page, chop_top, resx, resy);
253 sub_rect->x = ctx->x_offset;
254 sub_rect->y = ctx->y_offset + chop_top * BITMAP_CHAR_HEIGHT;
255 sub_rect->w = resx;
256 sub_rect->h = resy;
257 sub_rect->nb_colors = ctx->opacity > 0 && ctx->opacity < 255 ? 2 * VBI_NB_COLORS : VBI_NB_COLORS;
258 sub_rect->data[1] = av_mallocz(AVPALETTE_SIZE);
259 if (!sub_rect->data[1]) {
260 av_freep(&sub_rect->data[0]);
261 return AVERROR(ENOMEM);
262 }
263 for (ci = 0; ci < VBI_NB_COLORS; ci++) {
264 int r, g, b, a;
265
266 r = VBI_R(page->color_map[ci]);
267 g = VBI_G(page->color_map[ci]);
268 b = VBI_B(page->color_map[ci]);
269 a = VBI_A(page->color_map[ci]);
270 ((uint32_t *)sub_rect->data[1])[ci] = RGBA(r, g, b, a);
271 ((uint32_t *)sub_rect->data[1])[ci + VBI_NB_COLORS] = RGBA(r, g, b, ctx->opacity);
272 ff_dlog(ctx, "palette %0x\n", ((uint32_t *)sub_rect->data[1])[ci]);
273 }
274 ((uint32_t *)sub_rect->data[1])[VBI_TRANSPARENT_BLACK] = RGBA(0, 0, 0, 0);
275 ((uint32_t *)sub_rect->data[1])[VBI_TRANSPARENT_BLACK + VBI_NB_COLORS] = RGBA(0, 0, 0, 0);
276 sub_rect->type = SUBTITLE_BITMAP;
277 return 0;
278}
279
280static void handler(vbi_event *ev, void *user_data)
281{
282 TeletextContext *ctx = user_data;
283 TeletextPage *new_pages;
284 vbi_page page;
285 int res;
286 char pgno_str[12];
287 vbi_subno subno;
288 vbi_page_type vpt;
289 int chop_top;
290 char *lang;
291
292 snprintf(pgno_str, sizeof pgno_str, "%03x", ev->ev.ttx_page.pgno);
293 av_log(ctx, AV_LOG_DEBUG, "decoded page %s.%02x\n",
294 pgno_str, ev->ev.ttx_page.subno & 0xFF);
295
296 if (strcmp(ctx->pgno, "*") && !strstr(ctx->pgno, pgno_str))
297 return;
298 if (ctx->handler_ret < 0)
299 return;
300
301 res = vbi_fetch_vt_page(ctx->vbi, &page,
302 ev->ev.ttx_page.pgno,
303 ev->ev.ttx_page.subno,
304 VBI_WST_LEVEL_3p5, 25, TRUE);
305
306 if (!res)
307 return;
308
309#ifdef DEBUG
310 fprintf(stderr, "\nSaving res=%d dy0=%d dy1=%d...\n",
311 res, page.dirty.y0, page.dirty.y1);
312 fflush(stderr);
313
314 if (!vbi_export_stdio(ctx->ex, stderr, &page))
315 fprintf(stderr, "failed: %s\n", vbi_export_errstr(ctx->ex));
316#endif
317
318 vpt = vbi_classify_page(ctx->vbi, ev->ev.ttx_page.pgno, &subno, &lang);
319 chop_top = ctx->chop_top ||
320 ((page.rows > 1) && (vpt == VBI_SUBTITLE_PAGE));
321
322 av_log(ctx, AV_LOG_DEBUG, "%d x %d page chop:%d\n",
323 page.columns, page.rows, chop_top);
324
325 if (ctx->nb_pages < MAX_BUFFERED_PAGES) {
326 if ((new_pages = av_realloc_array(ctx->pages, ctx->nb_pages + 1, sizeof(TeletextPage)))) {
327 TeletextPage *cur_page = new_pages + ctx->nb_pages;
328 ctx->pages = new_pages;
329 cur_page->sub_rect = av_mallocz(sizeof(*cur_page->sub_rect));
330 cur_page->pts = ctx->pts;
331 cur_page->pgno = ev->ev.ttx_page.pgno;
332 cur_page->subno = ev->ev.ttx_page.subno;
333 if (cur_page->sub_rect) {
334 res = (ctx->format_id == 0) ?
335 gen_sub_bitmap(ctx, cur_page->sub_rect, &page, chop_top) :
336 gen_sub_text (ctx, cur_page->sub_rect, &page, chop_top);
337 if (res < 0) {
338 av_freep(&cur_page->sub_rect);
339 ctx->handler_ret = res;
340 } else {
341 ctx->pages[ctx->nb_pages++] = *cur_page;
342 }
343 } else {
344 ctx->handler_ret = AVERROR(ENOMEM);
345 }
346 } else {
347 ctx->handler_ret = AVERROR(ENOMEM);
348 }
349 } else {
350 //TODO: If multiple packets contain more than one page, pages may got queued up, and this may happen...
351 av_log(ctx, AV_LOG_ERROR, "Buffered too many pages, dropping page %s.\n", pgno_str);
352 ctx->handler_ret = AVERROR(ENOSYS);
353 }
354
355 vbi_unref_page(&page);
356}
357
358static int slice_to_vbi_lines(TeletextContext *ctx, uint8_t* buf, int size)
359{
360 int lines = 0;
361 while (size >= 2 && lines < MAX_SLICES) {
362 int data_unit_id = buf[0];
363 int data_unit_length = buf[1];
364 if (data_unit_length + 2 > size)
365 return AVERROR_INVALIDDATA;
366 if (ff_data_unit_id_is_teletext(data_unit_id)) {
367 if (data_unit_length != 0x2c)
368 return AVERROR_INVALIDDATA;
369 else {
370 int line_offset = buf[2] & 0x1f;
371 int field_parity = buf[2] & 0x20;
372 int i;
373 ctx->sliced[lines].id = VBI_SLICED_TELETEXT_B;
374 ctx->sliced[lines].line = (line_offset > 0 ? (line_offset + (field_parity ? 0 : 313)) : 0);
375 for (i = 0; i < 42; i++)
376 ctx->sliced[lines].data[i] = vbi_rev8(buf[4 + i]);
377 lines++;
378 }
379 }
380 size -= data_unit_length + 2;
381 buf += data_unit_length + 2;
382 }
383 if (size)
384 av_log(ctx, AV_LOG_WARNING, "%d bytes remained after slicing data\n", size);
385 return lines;
386}
387
388static int teletext_decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *pkt)
389{
390 TeletextContext *ctx = avctx->priv_data;
391 AVSubtitle *sub = data;
392 int ret = 0;
393 int j;
394
395 if (!ctx->vbi) {
396 if (!(ctx->vbi = vbi_decoder_new()))
397 return AVERROR(ENOMEM);
398 if (!vbi_event_handler_register(ctx->vbi, VBI_EVENT_TTX_PAGE, handler, ctx)) {
399 vbi_decoder_delete(ctx->vbi);
400 ctx->vbi = NULL;
401 return AVERROR(ENOMEM);
402 }
403 }
404
405 if (avctx->pkt_timebase.num && pkt->pts != AV_NOPTS_VALUE)
406 ctx->pts = av_rescale_q(pkt->pts, avctx->pkt_timebase, AV_TIME_BASE_Q);
407
408 if (pkt->size) {
409 int lines;
410 const int full_pes_size = pkt->size + 45; /* PES header is 45 bytes */
411
412 // We allow unreasonably big packets, even if the standard only allows a max size of 1472
413 if (full_pes_size < 184 || full_pes_size > 65504 || full_pes_size % 184 != 0)
414 return AVERROR_INVALIDDATA;
415
416 ctx->handler_ret = pkt->size;
417
418 if (ff_data_identifier_is_teletext(*pkt->data)) {
419 if ((lines = slice_to_vbi_lines(ctx, pkt->data + 1, pkt->size - 1)) < 0)
420 return lines;
421 ff_dlog(avctx, "ctx=%p buf_size=%d lines=%u pkt_pts=%7.3f\n",
422 ctx, pkt->size, lines, (double)pkt->pts/90000.0);
423 if (lines > 0) {
424#ifdef DEBUG
425 int i;
426 av_log(avctx, AV_LOG_DEBUG, "line numbers:");
427 for(i = 0; i < lines; i++)
428 av_log(avctx, AV_LOG_DEBUG, " %d", ctx->sliced[i].line);
429 av_log(avctx, AV_LOG_DEBUG, "\n");
430#endif
431 vbi_decode(ctx->vbi, ctx->sliced, lines, 0.0);
432 ctx->lines_processed += lines;
433 }
434 }
435 ctx->pts = AV_NOPTS_VALUE;
436 ret = ctx->handler_ret;
437 }
438
439 if (ret < 0)
440 return ret;
441
442 // is there a subtitle to pass?
443 if (ctx->nb_pages) {
444 int i;
445 sub->format = ctx->format_id;
446 sub->start_display_time = 0;
447 sub->end_display_time = ctx->sub_duration;
448 sub->num_rects = 0;
449 sub->pts = ctx->pages->pts;
450
451 if (ctx->pages->sub_rect->type != SUBTITLE_NONE) {
452 sub->rects = av_malloc(sizeof(*sub->rects));
453 if (sub->rects) {
454 sub->num_rects = 1;
455 sub->rects[0] = ctx->pages->sub_rect;
456#if FF_API_AVPICTURE
457FF_DISABLE_DEPRECATION_WARNINGS
458 for (j = 0; j < 4; j++) {
459 sub->rects[0]->pict.data[j] = sub->rects[0]->data[j];
460 sub->rects[0]->pict.linesize[j] = sub->rects[0]->linesize[j];
461 }
462FF_ENABLE_DEPRECATION_WARNINGS
463#endif
464 } else {
465 ret = AVERROR(ENOMEM);
466 }
467 } else {
468 av_log(avctx, AV_LOG_DEBUG, "sending empty sub\n");
469 sub->rects = NULL;
470 }
471 if (!sub->rects) // no rect was passed
472 subtitle_rect_free(&ctx->pages->sub_rect);
473
474 for (i = 0; i < ctx->nb_pages - 1; i++)
475 ctx->pages[i] = ctx->pages[i + 1];
476 ctx->nb_pages--;
477
478 if (ret >= 0)
479 *data_size = 1;
480 } else
481 *data_size = 0;
482
483 return ret;
484}
485
486static int teletext_init_decoder(AVCodecContext *avctx)
487{
488 TeletextContext *ctx = avctx->priv_data;
489 unsigned int maj, min, rev;
490
491 vbi_version(&maj, &min, &rev);
492 if (!(maj > 0 || min > 2 || min == 2 && rev >= 26)) {
493 av_log(avctx, AV_LOG_ERROR, "decoder needs zvbi version >= 0.2.26.\n");
494 return AVERROR_EXTERNAL;
495 }
496
497 if (ctx->format_id == 0) {
498 avctx->width = 41 * BITMAP_CHAR_WIDTH;
499 avctx->height = 25 * BITMAP_CHAR_HEIGHT;
500 }
501
502 ctx->vbi = NULL;
503 ctx->pts = AV_NOPTS_VALUE;
504
505 if (ctx->opacity == -1)
506 ctx->opacity = ctx->transparent_bg ? 0 : 255;
507
508#ifdef DEBUG
509 {
510 char *t;
511 ctx->ex = vbi_export_new("text", &t);
512 }
513#endif
514 av_log(avctx, AV_LOG_VERBOSE, "page filter: %s\n", ctx->pgno);
515 return (ctx->format_id == 1) ? ff_ass_subtitle_header_default(avctx) : 0;
516}
517
518static int teletext_close_decoder(AVCodecContext *avctx)
519{
520 TeletextContext *ctx = avctx->priv_data;
521
522 ff_dlog(avctx, "lines_total=%u\n", ctx->lines_processed);
523 while (ctx->nb_pages)
524 subtitle_rect_free(&ctx->pages[--ctx->nb_pages].sub_rect);
525 av_freep(&ctx->pages);
526
527 vbi_decoder_delete(ctx->vbi);
528 ctx->vbi = NULL;
529 ctx->pts = AV_NOPTS_VALUE;
530 if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP))
531 ctx->readorder = 0;
532 return 0;
533}
534
535static void teletext_flush(AVCodecContext *avctx)
536{
537 teletext_close_decoder(avctx);
538}
539
540#define OFFSET(x) offsetof(TeletextContext, x)
541#define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
542static const AVOption options[] = {
543 {"txt_page", "list of teletext page numbers to decode, * is all", OFFSET(pgno), AV_OPT_TYPE_STRING, {.str = "*"}, 0, 0, SD},
544 {"txt_chop_top", "discards the top teletext line", OFFSET(chop_top), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, SD},
545 {"txt_format", "format of the subtitles (bitmap or text)", OFFSET(format_id), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, SD, "txt_format"},
546 {"bitmap", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0}, 0, 0, SD, "txt_format"},
547 {"text", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1}, 0, 0, SD, "txt_format"},
548 {"txt_left", "x offset of generated bitmaps", OFFSET(x_offset), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 65535, SD},
549 {"txt_top", "y offset of generated bitmaps", OFFSET(y_offset), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 65535, SD},
550 {"txt_chop_spaces", "chops leading and trailing spaces from text", OFFSET(chop_spaces), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, SD},
551 {"txt_duration", "display duration of teletext pages in msecs", OFFSET(sub_duration), AV_OPT_TYPE_INT, {.i64 = 30000}, 0, 86400000, SD},
552 {"txt_transparent", "force transparent background of the teletext", OFFSET(transparent_bg), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, SD},
553 {"txt_opacity", "set opacity of the transparent background", OFFSET(opacity), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 255, SD},
554 { NULL },
555};
556
557static const AVClass teletext_class = {
558 .class_name = "libzvbi_teletextdec",
559 .item_name = av_default_item_name,
560 .option = options,
561 .version = LIBAVUTIL_VERSION_INT,
562};
563
564AVCodec ff_libzvbi_teletext_decoder = {
565 .name = "libzvbi_teletextdec",
566 .long_name = NULL_IF_CONFIG_SMALL("Libzvbi DVB teletext decoder"),
567 .type = AVMEDIA_TYPE_SUBTITLE,
568 .id = AV_CODEC_ID_DVB_TELETEXT,
569 .priv_data_size = sizeof(TeletextContext),
570 .init = teletext_init_decoder,
571 .close = teletext_close_decoder,
572 .decode = teletext_decode_frame,
573 .capabilities = AV_CODEC_CAP_DELAY,
574 .flush = teletext_flush,
575 .priv_class= &teletext_class,
576};
577
generated by cgit at 2024-05-17 02:27:07 (GMT)