Remove unnecessary inclusions of [sys/]time.h
[libav.git] / libavdevice / bktr.c
1 /*
2 * *BSD video grab interface
3 * Copyright (c) 2002 Steve O'Hara-Smith
4 * based on
5 * Linux video grab interface
6 * Copyright (c) 2000,2001 Gerard Lantau
7 * and
8 * simple_grab.c Copyright (c) 1999 Roger Hardiman
9 *
10 * This file is part of Libav.
11 *
12 * Libav is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU Lesser General Public
14 * License as published by the Free Software Foundation; either
15 * version 2.1 of the License, or (at your option) any later version.
16 *
17 * Libav is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * Lesser General Public License for more details.
21 *
22 * You should have received a copy of the GNU Lesser General Public
23 * License along with Libav; if not, write to the Free Software
24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 */
26
27 #include "libavformat/avformat.h"
28 #include "libavformat/internal.h"
29 #include "libavutil/log.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/parseutils.h"
32 #if HAVE_DEV_BKTR_IOCTL_METEOR_H && HAVE_DEV_BKTR_IOCTL_BT848_H
33 # include <dev/bktr/ioctl_meteor.h>
34 # include <dev/bktr/ioctl_bt848.h>
35 #elif HAVE_MACHINE_IOCTL_METEOR_H && HAVE_MACHINE_IOCTL_BT848_H
36 # include <machine/ioctl_meteor.h>
37 # include <machine/ioctl_bt848.h>
38 #elif HAVE_DEV_VIDEO_METEOR_IOCTL_METEOR_H && HAVE_DEV_VIDEO_BKTR_IOCTL_BT848_H
39 # include <dev/video/meteor/ioctl_meteor.h>
40 # include <dev/video/bktr/ioctl_bt848.h>
41 #elif HAVE_DEV_IC_BT8XX_H
42 # include <dev/ic/bt8xx.h>
43 #endif
44 #include <unistd.h>
45 #include <fcntl.h>
46 #include <sys/ioctl.h>
47 #include <sys/mman.h>
48 #include <sys/time.h>
49 #include <signal.h>
50 #include <stdint.h>
51
52 typedef struct {
53 AVClass *class;
54 int video_fd;
55 int tuner_fd;
56 int width, height;
57 uint64_t per_frame;
58 int standard;
59 char *video_size; /**< String describing video size, set by a private option. */
60 char *framerate; /**< Set by a private option. */
61 } VideoData;
62
63
64 #define PAL 1
65 #define PALBDGHI 1
66 #define NTSC 2
67 #define NTSCM 2
68 #define SECAM 3
69 #define PALN 4
70 #define PALM 5
71 #define NTSCJ 6
72
73 /* PAL is 768 x 576. NTSC is 640 x 480 */
74 #define PAL_HEIGHT 576
75 #define SECAM_HEIGHT 576
76 #define NTSC_HEIGHT 480
77
78 #ifndef VIDEO_FORMAT
79 #define VIDEO_FORMAT NTSC
80 #endif
81
82 static int bktr_dev[] = { METEOR_DEV0, METEOR_DEV1, METEOR_DEV2,
83 METEOR_DEV3, METEOR_DEV_SVIDEO };
84
85 uint8_t *video_buf;
86 size_t video_buf_size;
87 uint64_t last_frame_time;
88 volatile sig_atomic_t nsignals;
89
90
91 static void catchsignal(int signal)
92 {
93 nsignals++;
94 return;
95 }
96
97 static av_cold int bktr_init(const char *video_device, int width, int height,
98 int format, int *video_fd, int *tuner_fd, int idev, double frequency)
99 {
100 struct meteor_geomet geo;
101 int h_max;
102 long ioctl_frequency;
103 char *arg;
104 int c;
105 struct sigaction act = { 0 }, old;
106
107 if (idev < 0 || idev > 4)
108 {
109 arg = getenv ("BKTR_DEV");
110 if (arg)
111 idev = atoi (arg);
112 if (idev < 0 || idev > 4)
113 idev = 1;
114 }
115
116 if (format < 1 || format > 6)
117 {
118 arg = getenv ("BKTR_FORMAT");
119 if (arg)
120 format = atoi (arg);
121 if (format < 1 || format > 6)
122 format = VIDEO_FORMAT;
123 }
124
125 if (frequency <= 0)
126 {
127 arg = getenv ("BKTR_FREQUENCY");
128 if (arg)
129 frequency = atof (arg);
130 if (frequency <= 0)
131 frequency = 0.0;
132 }
133
134 sigemptyset(&act.sa_mask);
135 act.sa_handler = catchsignal;
136 sigaction(SIGUSR1, &act, &old);
137
138 *tuner_fd = open("/dev/tuner0", O_RDONLY);
139 if (*tuner_fd < 0)
140 av_log(NULL, AV_LOG_ERROR, "Warning. Tuner not opened, continuing: %s\n", strerror(errno));
141
142 *video_fd = open(video_device, O_RDONLY);
143 if (*video_fd < 0) {
144 av_log(NULL, AV_LOG_ERROR, "%s: %s\n", video_device, strerror(errno));
145 return -1;
146 }
147
148 geo.rows = height;
149 geo.columns = width;
150 geo.frames = 1;
151 geo.oformat = METEOR_GEO_YUV_422 | METEOR_GEO_YUV_12;
152
153 switch (format) {
154 case PAL: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break;
155 case PALN: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALN; break;
156 case PALM: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALM; break;
157 case SECAM: h_max = SECAM_HEIGHT; c = BT848_IFORM_F_SECAM; break;
158 case NTSC: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCM; break;
159 case NTSCJ: h_max = NTSC_HEIGHT; c = BT848_IFORM_F_NTSCJ; break;
160 default: h_max = PAL_HEIGHT; c = BT848_IFORM_F_PALBDGHI; break;
161 }
162
163 if (height <= h_max / 2)
164 geo.oformat |= METEOR_GEO_EVEN_ONLY;
165
166 if (ioctl(*video_fd, METEORSETGEO, &geo) < 0) {
167 av_log(NULL, AV_LOG_ERROR, "METEORSETGEO: %s\n", strerror(errno));
168 return -1;
169 }
170
171 if (ioctl(*video_fd, BT848SFMT, &c) < 0) {
172 av_log(NULL, AV_LOG_ERROR, "BT848SFMT: %s\n", strerror(errno));
173 return -1;
174 }
175
176 c = bktr_dev[idev];
177 if (ioctl(*video_fd, METEORSINPUT, &c) < 0) {
178 av_log(NULL, AV_LOG_ERROR, "METEORSINPUT: %s\n", strerror(errno));
179 return -1;
180 }
181
182 video_buf_size = width * height * 12 / 8;
183
184 video_buf = (uint8_t *)mmap((caddr_t)0, video_buf_size,
185 PROT_READ, MAP_SHARED, *video_fd, (off_t)0);
186 if (video_buf == MAP_FAILED) {
187 av_log(NULL, AV_LOG_ERROR, "mmap: %s\n", strerror(errno));
188 return -1;
189 }
190
191 if (frequency != 0.0) {
192 ioctl_frequency = (unsigned long)(frequency*16);
193 if (ioctl(*tuner_fd, TVTUNER_SETFREQ, &ioctl_frequency) < 0)
194 av_log(NULL, AV_LOG_ERROR, "TVTUNER_SETFREQ: %s\n", strerror(errno));
195 }
196
197 c = AUDIO_UNMUTE;
198 if (ioctl(*tuner_fd, BT848_SAUDIO, &c) < 0)
199 av_log(NULL, AV_LOG_ERROR, "TVTUNER_SAUDIO: %s\n", strerror(errno));
200
201 c = METEOR_CAP_CONTINOUS;
202 ioctl(*video_fd, METEORCAPTUR, &c);
203
204 c = SIGUSR1;
205 ioctl(*video_fd, METEORSSIGNAL, &c);
206
207 return 0;
208 }
209
210 static void bktr_getframe(uint64_t per_frame)
211 {
212 uint64_t curtime;
213
214 curtime = av_gettime();
215 if (!last_frame_time
216 || ((last_frame_time + per_frame) > curtime)) {
217 if (!usleep(last_frame_time + per_frame + per_frame / 8 - curtime)) {
218 if (!nsignals)
219 av_log(NULL, AV_LOG_INFO,
220 "SLEPT NO signals - %d microseconds late\n",
221 (int)(av_gettime() - last_frame_time - per_frame));
222 }
223 }
224 nsignals = 0;
225 last_frame_time = curtime;
226 }
227
228
229 /* note: we support only one picture read at a time */
230 static int grab_read_packet(AVFormatContext *s1, AVPacket *pkt)
231 {
232 VideoData *s = s1->priv_data;
233
234 if (av_new_packet(pkt, video_buf_size) < 0)
235 return AVERROR(EIO);
236
237 bktr_getframe(s->per_frame);
238
239 pkt->pts = av_gettime();
240 memcpy(pkt->data, video_buf, video_buf_size);
241
242 return video_buf_size;
243 }
244
245 static int grab_read_header(AVFormatContext *s1)
246 {
247 VideoData *s = s1->priv_data;
248 AVStream *st;
249 int width, height;
250 AVRational framerate;
251 int ret = 0;
252
253 if ((ret = av_parse_video_size(&width, &height, s->video_size)) < 0) {
254 av_log(s1, AV_LOG_ERROR, "Could not parse video size '%s'.\n", s->video_size);
255 goto out;
256 }
257
258 if (!s->framerate)
259 switch (s->standard) {
260 case PAL: s->framerate = av_strdup("pal"); break;
261 case NTSC: s->framerate = av_strdup("ntsc"); break;
262 case SECAM: s->framerate = av_strdup("25"); break;
263 default:
264 av_log(s1, AV_LOG_ERROR, "Unknown standard.\n");
265 ret = AVERROR(EINVAL);
266 goto out;
267 }
268 if ((ret = av_parse_video_rate(&framerate, s->framerate)) < 0) {
269 av_log(s1, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", s->framerate);
270 goto out;
271 }
272
273 st = avformat_new_stream(s1, NULL);
274 if (!st) {
275 ret = AVERROR(ENOMEM);
276 goto out;
277 }
278 avpriv_set_pts_info(st, 64, 1, 1000000); /* 64 bits pts in use */
279
280 s->width = width;
281 s->height = height;
282 s->per_frame = ((uint64_t)1000000 * framerate.den) / framerate.num;
283
284 st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
285 st->codec->pix_fmt = PIX_FMT_YUV420P;
286 st->codec->codec_id = CODEC_ID_RAWVIDEO;
287 st->codec->width = width;
288 st->codec->height = height;
289 st->codec->time_base.den = framerate.num;
290 st->codec->time_base.num = framerate.den;
291
292
293 if (bktr_init(s1->filename, width, height, s->standard,
294 &s->video_fd, &s->tuner_fd, -1, 0.0) < 0) {
295 ret = AVERROR(EIO);
296 goto out;
297 }
298
299 nsignals = 0;
300 last_frame_time = 0;
301
302 out:
303 return ret;
304 }
305
306 static int grab_read_close(AVFormatContext *s1)
307 {
308 VideoData *s = s1->priv_data;
309 int c;
310
311 c = METEOR_CAP_STOP_CONT;
312 ioctl(s->video_fd, METEORCAPTUR, &c);
313 close(s->video_fd);
314
315 c = AUDIO_MUTE;
316 ioctl(s->tuner_fd, BT848_SAUDIO, &c);
317 close(s->tuner_fd);
318
319 munmap((caddr_t)video_buf, video_buf_size);
320
321 return 0;
322 }
323
324 #define OFFSET(x) offsetof(VideoData, x)
325 #define DEC AV_OPT_FLAG_DECODING_PARAM
326 static const AVOption options[] = {
327 { "standard", "", offsetof(VideoData, standard), AV_OPT_TYPE_INT, {.dbl = VIDEO_FORMAT}, PAL, NTSCJ, AV_OPT_FLAG_DECODING_PARAM, "standard" },
328 { "PAL", "", 0, AV_OPT_TYPE_CONST, {.dbl = PAL}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
329 { "NTSC", "", 0, AV_OPT_TYPE_CONST, {.dbl = NTSC}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
330 { "SECAM", "", 0, AV_OPT_TYPE_CONST, {.dbl = SECAM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
331 { "PALN", "", 0, AV_OPT_TYPE_CONST, {.dbl = PALN}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
332 { "PALM", "", 0, AV_OPT_TYPE_CONST, {.dbl = PALM}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
333 { "NTSCJ", "", 0, AV_OPT_TYPE_CONST, {.dbl = NTSCJ}, 0, 0, AV_OPT_FLAG_DECODING_PARAM, "standard" },
334 { "video_size", "A string describing frame size, such as 640x480 or hd720.", OFFSET(video_size), AV_OPT_TYPE_STRING, {.str = "vga"}, 0, 0, DEC },
335 { "framerate", "", OFFSET(framerate), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, DEC },
336 { NULL },
337 };
338
339 static const AVClass bktr_class = {
340 .class_name = "BKTR grab interface",
341 .item_name = av_default_item_name,
342 .option = options,
343 .version = LIBAVUTIL_VERSION_INT,
344 };
345
346 AVInputFormat ff_bktr_demuxer = {
347 .name = "bktr",
348 .long_name = NULL_IF_CONFIG_SMALL("video grab"),
349 .priv_data_size = sizeof(VideoData),
350 .read_header = grab_read_header,
351 .read_packet = grab_read_packet,
352 .read_close = grab_read_close,
353 .flags = AVFMT_NOFILE,
354 .priv_class = &bktr_class,
355 };