1/*-
2 * SPDX-License-Identifier: BSD-4-Clause
3 *
4 * Copyright (C) 2003
5 * 	Hidetoshi Shimokawa. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *
18 *	This product includes software developed by Hidetoshi Shimokawa.
19 *
20 * 4. Neither the name of the author nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * $FreeBSD$
37 */
38#include <sys/param.h>
39#include <sys/ioctl.h>
40#include <sys/time.h>
41#include <sys/types.h>
42#include <sys/uio.h>
43
44#if __FreeBSD_version >= 500000
45#include <arpa/inet.h>
46#endif
47
48#include <err.h>
49#include <errno.h>
50#include <unistd.h>
51#include <fcntl.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55#include <sysexits.h>
56
57#include <dev/firewire/firewire.h>
58#include <dev/firewire/iec68113.h>
59
60#include "fwmethods.h"
61
62#define DEBUG		0
63#define FIX_FRAME	1
64
65struct frac {
66	int n,d;
67};
68
69struct frac frame_cycle[2]  = {
70	{8000*100, 2997},	/* NTSC 8000 cycle / 29.97 Hz */
71	{320, 1},		/* PAL  8000 cycle / 25 Hz */
72};
73int npackets[] = {
74	250		/* NTSC */,
75	300		/* PAL */
76};
77struct frac pad_rate[2]  = {
78	{203, 2997},	/* = (8000 - 29.97 * 250)/(29.97 * 250) */
79	{1, 15},	/* = (8000 - 25 * 300)/(25 * 300) */
80};
81char *system_name[] = {"NTSC", "PAL"};
82int frame_rate[] = {30, 25};
83
84#define PSIZE 512
85#define DSIZE 480
86#define NCHUNK 64
87
88#define NPACKET_R 256
89#define NPACKET_T 255
90#define TNBUF 100	/* XXX too large value causes block noise */
91#define NEMPTY 10	/* depends on TNBUF */
92#define RBUFSIZE (PSIZE * NPACKET_R)
93#define MAXBLOCKS (300)
94#define CYCLE_FRAC 0xc00
95
96void
97dvrecv(int d, const char *filename, char ich, int count)
98{
99	struct fw_isochreq isoreq;
100	struct fw_isobufreq bufreq;
101	struct dvdbc *dv;
102	struct ciphdr *ciph;
103	struct fw_pkt *pkt;
104	char *pad, *buf;
105	u_int32_t *ptr;
106	int len, tlen, npad, fd, k, m, vec, system = -1, nb;
107	int nblocks[] = {250 /* NTSC */, 300 /* PAL */};
108	struct iovec wbuf[NPACKET_R];
109
110	if(strcmp(filename, "-") == 0) {
111		fd = STDOUT_FILENO;
112	} else {
113		fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0660);
114		if (fd == -1)
115			err(EX_NOINPUT, "%s", filename);
116	}
117	buf = malloc(RBUFSIZE);
118	pad = malloc(DSIZE*MAXBLOCKS);
119	memset(pad, 0xff, DSIZE*MAXBLOCKS);
120	bzero(wbuf, sizeof(wbuf));
121
122	bufreq.rx.nchunk = NCHUNK;
123	bufreq.rx.npacket = NPACKET_R;
124	bufreq.rx.psize = PSIZE;
125	bufreq.tx.nchunk = 0;
126	bufreq.tx.npacket = 0;
127	bufreq.tx.psize = 0;
128	if (ioctl(d, FW_SSTBUF, &bufreq) < 0)
129		err(1, "ioctl FW_SSTBUF");
130
131	isoreq.ch = ich & 0x3f;
132	isoreq.tag = (ich >> 6) & 3;
133
134	if (ioctl(d, FW_SRSTREAM, &isoreq) < 0)
135       		err(1, "ioctl");
136
137	k = m = 0;
138	while (count <= 0 || k <= count) {
139#if 0
140		tlen = 0;
141		while ((len = read(d, buf + tlen, PSIZE
142						/* RBUFSIZE - tlen */)) > 0) {
143			if (len < 0) {
144				if (errno == EAGAIN) {
145					fprintf(stderr, "(EAGAIN)\n");
146					fflush(stderr);
147					if (len <= 0)
148						continue;
149				} else
150					err(1, "read failed");
151			}
152			tlen += len;
153			if ((RBUFSIZE - tlen) < PSIZE)
154				break;
155		};
156#else
157		tlen = len = read(d, buf, RBUFSIZE);
158		if (len < 0) {
159			if (errno == EAGAIN) {
160				fprintf(stderr, "(EAGAIN) - push 'Play'?\n");
161				fflush(stderr);
162				if (len <= 0)
163					continue;
164			} else
165				err(1, "read failed");
166		}
167#endif
168		vec = 0;
169		ptr = (u_int32_t *) buf;
170again:
171		pkt = (struct fw_pkt *) ptr;
172#if DEBUG
173		fprintf(stderr, "%08x %08x %08x %08x\n",
174			htonl(ptr[0]), htonl(ptr[1]),
175			htonl(ptr[2]), htonl(ptr[3]));
176#endif
177		ciph = (struct ciphdr *)(ptr + 1);	/* skip iso header */
178		if (ciph->fmt != CIP_FMT_DVCR)
179			errx(1, "unknown format 0x%x", ciph->fmt);
180		ptr = (u_int32_t *) (ciph + 1);		/* skip cip header */
181#if DEBUG
182		if (ciph->fdf.dv.cyc != 0xffff && k == 0) {
183			fprintf(stderr, "0x%04x\n", ntohs(ciph->fdf.dv.cyc));
184		}
185#endif
186		if (pkt->mode.stream.len <= sizeof(struct ciphdr))
187			/* no payload */
188			goto next;
189		for (dv = (struct dvdbc *)ptr;
190				(char *)dv < (char *)(ptr + ciph->len);
191				dv+=6) {
192
193#if DEBUG
194			fprintf(stderr, "(%d,%d) ", dv->sct, dv->dseq);
195#endif
196			if  (dv->sct == DV_SCT_HEADER && dv->dseq == 0) {
197				if (system < 0) {
198					system = ciph->fdf.dv.fs;
199					fprintf(stderr, "%s\n", system_name[system]);
200				}
201
202				/* Fix DSF bit */
203				if (system == 1 &&
204					(dv->payload[0] & DV_DSF_12) == 0)
205					dv->payload[0] |= DV_DSF_12;
206				nb = nblocks[system];
207 				fprintf(stderr, "%d:%02d:%02d %d\r",
208					k / (3600 * frame_rate[system]),
209					(k / (60 * frame_rate[system])) % 60,
210					(k / frame_rate[system]) % 60,
211					k % frame_rate[system]);
212
213#if FIX_FRAME
214				if (m > 0 && m != nb) {
215					/* padding bad frame */
216					npad = ((nb - m) % nb);
217					if (npad < 0)
218						npad += nb;
219					fprintf(stderr, "\n%d blocks padded\n",
220					    npad);
221					npad *= DSIZE;
222					wbuf[vec].iov_base = pad;
223					wbuf[vec++].iov_len = npad;
224					if (vec >= NPACKET_R) {
225						writev(fd, wbuf, vec);
226						vec = 0;
227					}
228				}
229#endif
230				k++;
231				fflush(stderr);
232				m = 0;
233			}
234			if (k == 0 || (count > 0 && k > count))
235				continue;
236			m++;
237			wbuf[vec].iov_base = (char *) dv;
238			wbuf[vec++].iov_len = DSIZE;
239			if (vec >= NPACKET_R) {
240				writev(fd, wbuf, vec);
241				vec = 0;
242			}
243		}
244		ptr = (u_int32_t *)dv;
245next:
246		if ((char *)ptr < buf + tlen)
247			goto again;
248		if (vec > 0)
249			writev(fd, wbuf, vec);
250	}
251	if (fd != STDOUT_FILENO)
252		close(fd);
253	fprintf(stderr, "\n");
254}
255
256
257void
258dvsend(int d, const char *filename, char ich, int count)
259{
260	struct fw_isochreq isoreq;
261	struct fw_isobufreq bufreq;
262	struct dvdbc *dv;
263	struct fw_pkt *pkt;
264	int len, tlen, header, fd, frames, packets, vec, offset, nhdr, i;
265	int system=-1, pad_acc, cycle_acc, cycle, f_cycle, f_frac;
266	struct iovec wbuf[TNBUF*2 + NEMPTY];
267	char *pbuf;
268	u_int32_t iso_data, iso_empty, hdr[TNBUF + NEMPTY][3];
269	struct ciphdr *ciph;
270	struct timeval start, end;
271	double rtime;
272
273	fd = open(filename, O_RDONLY);
274	if (fd == -1)
275		err(EX_NOINPUT, "%s", filename);
276
277	pbuf = malloc(DSIZE * TNBUF);
278	bzero(wbuf, sizeof(wbuf));
279
280	bufreq.rx.nchunk = 0;
281	bufreq.rx.npacket = 0;
282	bufreq.rx.psize = 0;
283	bufreq.tx.nchunk = NCHUNK;
284	bufreq.tx.npacket = NPACKET_T;
285	bufreq.tx.psize = PSIZE;
286	if (ioctl(d, FW_SSTBUF, &bufreq) < 0)
287		err(1, "ioctl FW_SSTBUF");
288
289	isoreq.ch = ich & 0x3f;
290	isoreq.tag = (ich >> 6) & 3;
291
292	if (ioctl(d, FW_STSTREAM, &isoreq) < 0)
293       		err(1, "ioctl FW_STSTREAM");
294
295	iso_data = 0;
296	pkt = (struct fw_pkt *) &iso_data;
297	pkt->mode.stream.len = DSIZE + sizeof(struct ciphdr);
298	pkt->mode.stream.sy = 0;
299	pkt->mode.stream.tcode = FWTCODE_STREAM;
300	pkt->mode.stream.chtag = ich;
301	iso_empty = iso_data;
302	pkt = (struct fw_pkt *) &iso_empty;
303	pkt->mode.stream.len = sizeof(struct ciphdr);
304
305	bzero(hdr[0], sizeof(hdr[0]));
306	hdr[0][0] = iso_data;
307	ciph = (struct ciphdr *)&hdr[0][1];
308	ciph->src = 0;	 /* XXX */
309	ciph->len = 120;
310	ciph->dbc = 0;
311	ciph->eoh1 = 1;
312	ciph->fdf.dv.cyc = 0xffff;
313
314	for (i = 1; i < TNBUF; i++)
315		bcopy(hdr[0], hdr[i], sizeof(hdr[0]));
316
317	gettimeofday(&start, NULL);
318#if DEBUG
319	fprintf(stderr, "%08x %08x %08x\n",
320			htonl(hdr[0]), htonl(hdr[1]), htonl(hdr[2]));
321#endif
322	frames = 0;
323	packets = 0;
324	pad_acc = 0;
325	while (1) {
326		tlen = 0;
327		while (tlen < DSIZE * TNBUF) {
328			len = read(fd, pbuf + tlen, DSIZE * TNBUF - tlen);
329			if (len <= 0) {
330				if (tlen > 0)
331					break;
332				if (len < 0)
333					warn("read");
334				else
335					fprintf(stderr, "\nend of file\n");
336				goto send_end;
337			}
338			tlen += len;
339		}
340		vec = 0;
341		offset = 0;
342		nhdr = 0;
343next:
344		dv = (struct dvdbc *)(pbuf + offset * DSIZE);
345#if 0
346		header = (dv->sct == 0 && dv->dseq == 0);
347#else
348		header = (packets == 0 || packets % npackets[system] == 0);
349#endif
350
351		ciph = (struct ciphdr *)&hdr[nhdr][1];
352		if (header) {
353			if (system < 0) {
354				system = ((dv->payload[0] & DV_DSF_12) != 0);
355				printf("%s\n", system_name[system]);
356				cycle = 1;
357				cycle_acc = frame_cycle[system].d * cycle;
358			}
359			fprintf(stderr, "%d", frames % 10);
360			frames ++;
361			if (count > 0 && frames > count)
362				break;
363			if (frames % frame_rate[system] == 0)
364				fprintf(stderr, "\n");
365			fflush(stderr);
366			f_cycle = (cycle_acc / frame_cycle[system].d) & 0xf;
367			f_frac = (cycle_acc % frame_cycle[system].d
368					* CYCLE_FRAC) / frame_cycle[system].d;
369#if 0
370			ciph->fdf.dv.cyc = htons(f_cycle << 12 | f_frac);
371#else
372			ciph->fdf.dv.cyc = htons(cycle << 12 | f_frac);
373#endif
374			cycle_acc += frame_cycle[system].n;
375			cycle_acc %= frame_cycle[system].d * 0x10;
376
377		} else {
378			ciph->fdf.dv.cyc = 0xffff;
379		}
380		ciph->dbc = packets++ % 256;
381		pad_acc += pad_rate[system].n;
382		if (pad_acc >= pad_rate[system].d) {
383			pad_acc -= pad_rate[system].d;
384			bcopy(hdr[nhdr], hdr[nhdr+1], sizeof(hdr[0]));
385			hdr[nhdr][0] = iso_empty;
386			wbuf[vec].iov_base = (char *)hdr[nhdr];
387			wbuf[vec++].iov_len = sizeof(hdr[0]);
388			nhdr ++;
389			cycle ++;
390		}
391		hdr[nhdr][0] = iso_data;
392		wbuf[vec].iov_base = (char *)hdr[nhdr];
393		wbuf[vec++].iov_len = sizeof(hdr[0]);
394		wbuf[vec].iov_base = (char *)dv;
395		wbuf[vec++].iov_len = DSIZE;
396		nhdr ++;
397		cycle ++;
398		offset ++;
399		if (offset * DSIZE < tlen)
400			goto next;
401
402again:
403		len = writev(d, wbuf, vec);
404		if (len < 0) {
405			if (errno == EAGAIN) {
406				fprintf(stderr, "(EAGAIN) - push 'Play'?\n");
407				goto again;
408			}
409			err(1, "write failed");
410		}
411	}
412	fprintf(stderr, "\n");
413send_end:
414	gettimeofday(&end, NULL);
415	rtime = end.tv_sec - start.tv_sec
416			+ (end.tv_usec - start.tv_usec) * 1e-6;
417	fprintf(stderr, "%d frames, %.2f secs, %.2f frames/sec\n",
418			frames, rtime, frames/rtime);
419	close(fd);
420}
421