aboutsummaryrefslogtreecommitdiffhomepage
path: root/libvo/vo_bl.c
blob: 8a4c29edd7848b8834317f1328ad87dd81548542 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
/*
 * playback using the Blinkenlights UDP protocol (and to files)
 *
 * UDP socket handling copied from bsender.c part of blib-0.6:
 * http://sven.gimp.org/blinkenlights/
 * copyright (c)  2001-2001 The Blinkenlights Crew:
 * 	Sven Neumann <sven@gimp.org>
 * 	Michael Natterer <mitch@gimp.org>
 * 	Daniel Mack <daniel@yoobay.net>
 * copyright (C) 2004 Stefan Schuermans <1stein@schuermans.info>
 * other stuff: copyright (C) 2002 Rik Snel
 *
 * This file is part of MPlayer.
 *
 * MPlayer 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.
 *
 * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <sys/ioctl.h>

#include "config.h"

#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>

#include "video_out.h"
#include "video_out_internal.h"
#include "mp_msg.h"
#include "m_option.h"
#include "fastmemcpy.h"

static const vo_info_t info =
{
	"Blinkenlights driver: http://www.blinkenlights.de",
	"bl",
	"Rik Snel <snel@phys.uu.nl>",
	""
};

const LIBVO_EXTERN (bl)

/* General variables */

static unsigned char *image = NULL;
static unsigned char *tmp = NULL;
static int framenum;
static char *bl_subdevice = NULL;
static int prevpts = -1;

typedef struct {
	char *name; /* filename */
	FILE *fp;
	int header_written; /* if header was written already */
} bl_file_t;

typedef struct {
	char *name; /* hostname */
	int port;
	int fd; /* file descriptor */
} bl_host_t;

typedef struct {
	char *name;
	int img_format;

	int channels;
	int width;
	int height;
	int bpc; /* bits per component: bpc = 3, channels = 3 => bpp = 24*/

	/* file output functions */
	int (*init_file)(bl_file_t *file);
	void (*write_frame)(bl_file_t *file, unsigned char *i, int duration);
	void (*close_file)(bl_file_t *file);

	/* network output functions */
	int (*init_connection)(bl_host_t *host);
	void (*send_frame)(bl_host_t *host);
	void (*close_connection)(bl_host_t *host);
} bl_properties_t;

static bl_properties_t *bl = NULL;

/* arbitrary limit because I am too lazy to do proper memory management */
#define BL_MAX_FILES 16
#define BL_MAX_HOSTS 16
static bl_file_t bl_files[BL_MAX_FILES];
static bl_host_t bl_hosts[BL_MAX_HOSTS];
static int no_bl_files = 0;
static int no_bl_hosts = 0;

typedef struct {
	uint32_t magic;
	uint16_t height;
	uint16_t width;
	uint16_t channels;
	uint16_t maxval;
	unsigned char data[0];
} bl_packet_t;

static bl_packet_t *bl_packet = NULL;
static int bl_size;

/* bml output functions */
static int bml_init(bl_file_t *f) {
	f->fp = fopen(f->name, "w");
	if (!f->fp) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: error opening %s\n", f->name);
		return 1;
	}
	f->header_written = 0;
	return 0;
}

static void bml_write_frame(bl_file_t *f, unsigned char *i, int duration) {
	int j, k;
	if( ! f->header_written )
	{
		fprintf(f->fp,
"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
"<blm width=\"%d\" height=\"%d\" bits=\"%d\" channels=\"%d\">\n"
"    <header>\n"
"        <title>Movie autogenerated by MPlayer</title>\n"
"        <url>http://www.mplayerhq.hu</url>\n"
"    </header>\n", bl->width, bl->height, bl->bpc, bl->channels);
		f->header_written = 1;
	}
	fprintf(f->fp, "    <frame duration=\"%d\">\n", duration);
	for (j = 0; j < bl->height; j++) {
		fprintf(f->fp, "        <row>");
		for (k = 0; k < bl->width; k++)
			fprintf(f->fp, "%02x", *(i + j * bl->width + k));
		fprintf(f->fp, "</row>\n");
	}
	fprintf(f->fp, "    </frame>\n");
}

static void bml_close(bl_file_t *f) {
	fprintf(f->fp, "</blm>\n");
	fclose(f->fp);
}

/* Blinkenlights UDP protocol */
static int udp_init(bl_host_t *h) {
	struct sockaddr_in addr;
	struct hostent *dest;

	dest = gethostbyname(h->name);
	if (!dest) {
		mp_msg(MSGT_VO, MSGL_ERR,
				"unable to resolve host %s\n", h->name);
		return 1;
	}

	h->fd = -1;
	memset(&addr, 0, sizeof(addr));
	addr.sin_family = AF_INET;
	addr.sin_port = htons(h->port);

	memcpy(&addr.sin_addr.s_addr, dest->h_addr_list[0], dest->h_length);

	h->fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
	if (h->fd < 0) {
		mp_msg(MSGT_VO, MSGL_ERR,
				"couldn't create socket for %s\n", h->name);
		return 1;
	}
	if (connect(h->fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
		mp_msg(MSGT_VO, MSGL_ERR, "couldn't connect socket for %s\n",
				h->name);
		close(h->fd);
		return 1;
	}
	return 0;
}

static void udp_send(bl_host_t *h) {
	if (send(h->fd, bl_packet, bl_size, 0) != bl_size)
		mp_msg(MSGT_VO, MSGL_ERR, "unable to send to %s\n", h->name);
}

static void udp_close(bl_host_t *h) {
	close(h->fd);
}

#define NO_BLS 3

static bl_properties_t bls[NO_BLS] = {
	{ "hdl", IMGFMT_YV12, 1, 18, 8, 8,
	&bml_init, &bml_write_frame, &bml_close,
	&udp_init, &udp_send, &udp_close },
	{ "arcade", IMGFMT_YV12, 1, 26, 20, 8,
	&bml_init, &bml_write_frame, &bml_close,
	&udp_init, &udp_send, &udp_close },
	{ "grayscale", IMGFMT_YV12, 1, -1, -1, 8, /* use width and height of movie */
	&bml_init, &bml_write_frame, &bml_close,
	&udp_init, &udp_send, &udp_close } };

static int config(uint32_t width, uint32_t height, uint32_t d_width,
	uint32_t d_height, uint32_t flags, char *title, uint32_t format)
{
	void * ptr;

	/* adapt size of Blinkenlights UDP stream to size of movie */
	if (bl->width < 0 || bl->height < 0) {
		if (bl->width < 0) { /* use width of movie */
			bl->width = width;
			bl_packet->width = htons(bl->width);
		}
		if (bl->height < 0) { /* use height of movie */
			bl->height = height;
			bl_packet->height = htons(bl->height);
		}
		/* check for maximum size of UDP packet */
		if (12 + bl->width*bl->height*bl->channels > 65507) {
			mp_msg(MSGT_VO, MSGL_ERR, "bl: %dx%d-%d does not fit into an UDP packet\n",
					bl->width, bl->height, bl->channels);
			return 1;
		}
		/* resize frame and tmp buffers */
		bl_size = 12 + bl->width*bl->height*bl->channels;
		ptr = realloc(bl_packet, 12 + bl->width*bl->height*3); /* space for header and image data */
		if (ptr)
			bl_packet = (bl_packet_t*)ptr;
		else {
			mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
			return 1;
		}
		image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
		ptr = realloc(tmp, bl->width*bl->height*3); /* space for image data only */
		if (ptr)
			tmp = (unsigned char*)ptr;
		else {
			mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
			return 1;
		}
	}

	framenum = 0;
	if (format != IMGFMT_YV12) {
		mp_msg(MSGT_VO, MSGL_ERR, "vo_bl called with wrong format");
		return 1;
	}
	if (width > bl->width) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: width of movie too large %d > %d\n", width, bl->width);
		return 1;
	}
	if (height > bl->height) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: height of movie too large %d > %d\n", height, bl->height);
		return 1;
	}
	if (!image) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: image should be initialized, internal error\n");
		return 1;
	}
	memset(image, 0, bl->width*bl->height*3); /* blank the image */
	mp_msg(MSGT_VO, MSGL_V, "vo_config bl called\n");
	return 0;
}

static void draw_osd(void) {
}

static void flip_page (void) {
	int i;

	if (prevpts >= 0) for (i = 0; i < no_bl_files; i++)
		bl->write_frame(&bl_files[i], tmp, (vo_pts - prevpts)/90);
	fast_memcpy(tmp, image, bl->width*bl->height*bl->channels);
	prevpts = vo_pts;

	for (i = 0; i < no_bl_hosts; i++) bl->send_frame(&bl_hosts[i]);


	framenum++;
	return;
}

static int draw_frame(uint8_t * src[]) {
	return 0;
}

static int query_format(uint32_t format) {
	if (format == bl->img_format)
		return VFCAP_CSP_SUPPORTED|VFCAP_CSP_SUPPORTED_BY_HW;
	return 0;
}

static void uninit(void) {
	int i;
	mp_msg(MSGT_VO, MSGL_V, "bl: uninit called\n");
	free(bl_packet);
	bl_packet = NULL;
	free(bl_subdevice);
	bl_subdevice = NULL;
	for (i = 0; i < no_bl_files; i++) bl->close_file(&bl_files[i]);
	for (i = 0; i < no_bl_hosts; i++) bl->close_connection(&bl_hosts[i]);
	no_bl_files = 0;
	no_bl_hosts = 0;
	bl = NULL;
}

static void check_events(void) {
}

static int draw_slice(uint8_t *srcimg[], int stride[],
		int wf, int hf, int xf, int yf) {
	int i, w, h, x, y;
	uint8_t *dst;
	uint8_t *src=srcimg[0];
	w = wf; h = hf; x = xf; y = yf;
	dst=image; /* + zr->off_y + zr->image_width*(y/zr->vdec)+x;*/
	// copy Y:
	for (i = 0; i < h; i++) {
		fast_memcpy(dst,src,w);
		dst+=bl->width;
		src+=stride[0];

	}
 	return 0;
}

static int preinit(const char *arg) {
	char *p, *q;
	int end = 0, i;
	char txt[256];
	if (!arg || strlen(arg) == 0) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must be given, example: -vo bl:arcade:host=localhost:2323\n");
		return 1;
	}

	bl_subdevice = malloc(strlen(arg) + 1);
	if (!bl_subdevice) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
		return 1;
	}
	p = bl_subdevice;
	strcpy(p, arg);
	mp_msg(MSGT_VO, MSGL_V, "bl: preinit called with %s\n", arg);
	for (i = 0; i < NO_BLS; i++) {
		if (!strncmp(p, bls[i].name, strlen(bls[i].name)))
			break;
	}
	if (i >= NO_BLS) {
		txt[0] = 0;
		for (i = 0; i < NO_BLS; i++)
			if (strlen( txt ) + 4 + strlen( bls[i].name ) + 1 < sizeof(txt))
				sprintf( txt + strlen( txt ), "%s%s",
					 txt[0] == 0 ? "" : i == NO_BLS - 1 ? " or " : ", ", bls[i].name );
		mp_msg(MSGT_VO, MSGL_ERR, "bl: subdevice must start with %s\nbl: i.e. -vo bl:arcade:host=localhost:2323\n", txt);
		return 1;
	}
	bl = &bls[i];
	p += strlen(bls[i].name);
	if (*p == '\0') {
		no_bl_hosts = 1;
		bl_hosts[0].name = "localhost";
		bl_hosts[0].port = 2323;
		mp_msg(MSGT_VO, MSGL_V, "bl: no hosts/files specified, using localhost:2323\n");
		end = 1;
	} else if (*p != ':') {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in subdevice\n");
		return 1;
	}
	p++;

	while (!end) {
		q = p + 5;
		if (!strncmp(p, "file=", 5)) {
			if (no_bl_files == BL_MAX_FILES) {
				mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of files reached (%d)\n", BL_MAX_FILES);
				return 1;
			}
			p += 5;
			while (*q != ',' && *q != '\0') q++;
			if (*q == '\0') end = 1;
			*q = '\0';
			bl_files[no_bl_files].name = p;
			mp_msg(MSGT_VO, MSGL_V, "blfile[%d]: %s\n",
					no_bl_files, p);
			no_bl_files++;
		} else if (!strncmp(p, "host=", 5)) {
			if (no_bl_hosts == BL_MAX_HOSTS) {
				mp_msg(MSGT_VO, MSGL_ERR, "bl: maximum number of hosts reached (%d)\n", BL_MAX_HOSTS);
				return 1;
			}
			p += 5;
			while (*q != ',' && *q != '\0' && *q != ':') q++;
			if (*q == ':') {
				*q++ = '\0';
				bl_hosts[no_bl_hosts].name = p;
				bl_hosts[no_bl_hosts].port = atoi(q);
				while (*q != ',' && *q != '\0') q++;
				if (*q == '\0') end = 1;
			} else {
				/* use default port */
				if (*q == '\0') end = 1;
				*q = '\0';
				bl_hosts[no_bl_hosts].name = p;
				bl_hosts[no_bl_hosts].port = 2323;
			}
			mp_msg(MSGT_VO, MSGL_V,
					"blhost[%d]: %s:%d\n",
					no_bl_hosts, p,
					bl_hosts[no_bl_hosts].port);
			no_bl_hosts++;
		} else {
			mp_msg(MSGT_VO, MSGL_ERR, "bl: syntax error in entry %d in subdevice %s, should be a comma separated\nlist of host=name:port and file=foo.bml\n", no_bl_hosts + no_bl_files, arg);
			return 1;
		}
		p = ++q;
	}

	if (bl->width >= 0 && bl->height >= 0) { /* size already known */
		bl_size = 12 + bl->width*bl->height*bl->channels;
		bl_packet = malloc(12 + bl->width*bl->height*3); /* space for header and image data */
		image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
		tmp = malloc(bl->width*bl->height*3); /* space for image data only */
	}
	else { /* size unknown yet */
		bl_size = 12;
		bl_packet = malloc(12 + 3); /* space for header and a pixel */
		image = ((unsigned char*)bl_packet + 12); /* pointer to image data */
		tmp = malloc(3); /* space for a pixel only */
	}

	if (!bl_packet || !tmp) {
		mp_msg(MSGT_VO, MSGL_ERR, "bl: out of memory error\n");
		return 1;
	}
	bl_packet->magic = htonl(0x23542666);
	bl_packet->width = htons(bl->width);
	bl_packet->height = htons(bl->height);
	bl_packet->channels = htons(bl->channels);
	bl_packet->maxval = htons((1 << bl->bpc) - 1);

	/* open all files */
	for (i = 0; i < no_bl_files; i++)
		if (bl->init_file(&bl_files[i])) return 1;

	/* open all sockets */
	for (i = 0; i < no_bl_hosts; i++)
		if (bl->init_connection(&bl_hosts[i])) return 1;


	return 0;
}

static int control(uint32_t request, void *data) {
	switch (request) {
		case VOCTRL_QUERY_FORMAT:
			return query_format(*((uint32_t*)data));
  		}
  	return VO_NOTIMPL;
}