013490c5e0
- Exploit multiple packets read/write for DV stream. (fwdv.c) - Add reference to libdv in the ports collection. (fwcontrol.8)
434 lines
10 KiB
C
434 lines
10 KiB
C
/*
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* Copyright (C) 2003
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* Hidetoshi Shimokawa. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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*
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* This product includes software developed by Hidetoshi Shimokawa.
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*
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* 4. Neither the name of the author nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/uio.h>
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#if __FreeBSD_version >= 500000
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#include <arpa/inet.h>
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#endif
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#include <err.h>
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#include <errno.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <dev/firewire/firewire.h>
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#include <dev/firewire/iec68113.h>
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struct frac {
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int n,d;
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};
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struct frac frame_cycle[2] = {
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{8000*100, 2997}, /* NTSC 8000 cycle / 29.97 Hz */
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{320, 1}, /* PAL 8000 cycle / 25 Hz */
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};
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int npackets[] = {
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250 /* NTSC */,
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300 /* PAL */
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};
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struct frac pad_rate[2] = {
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{203, 2997}, /* = (8000 - 29.97 * 250)/(29.97 * 250) */
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{1, 15}, /* = (8000 - 25 * 300)/(25 * 300) */
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};
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#define PSIZE 512
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#define DSIZE 480
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#define NCHUNK 8
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#define NPACKET_R 256
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#define NPACKET_T 255
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#define NEMPTY 20
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#define BUFSIZE (PSIZE * NPACKET_R)
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#define MAXBLOCKS (300)
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#define CYCLE_FRAC 0xc00
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int
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dvrecv(int d, char *filename, char ich, int count)
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{
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struct fw_isochreq isoreq;
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struct fw_isobufreq bufreq;
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struct dvdbc *dv;
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struct ciphdr *ciph;
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struct fw_pkt *pkt;
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char *pad, *buf;
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u_int32_t *ptr;
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int len, tlen, npad, fd, k, m, vec, pal, nb;
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int nblocks[] = {250 /* NTSC */, 300 /* PAL */};
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struct iovec wbuf[NPACKET_R];
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fd = open(filename, O_CREAT | O_WRONLY | O_TRUNC, 0660);
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buf = (char *)malloc(BUFSIZE);
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pad = (char *)malloc(DSIZE*MAXBLOCKS);
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bzero(pad, DSIZE*MAXBLOCKS);
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bzero(wbuf, sizeof(wbuf));
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bufreq.rx.nchunk = NCHUNK;
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bufreq.rx.npacket = NPACKET_R;
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bufreq.rx.psize = PSIZE;
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bufreq.tx.nchunk = 0;
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bufreq.tx.npacket = 0;
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bufreq.tx.psize = 0;
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if (ioctl(d, FW_SSTBUF, &bufreq) < 0) {
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err(1, "ioctl");
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}
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isoreq.ch = ich & 0x3f;
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isoreq.tag = (ich >> 6) & 3;
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if( ioctl(d, FW_SRSTREAM, &isoreq) < 0)
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err(1, "ioctl");
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k = m = 0;
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while (count <= 0 || k <= count) {
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#if 0
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tlen = 0;
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while ((len = read(d, buf + tlen, PSIZE
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/*BUFSIZE - tlen*/)) > 0) {
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if (len < 0) {
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if (errno == EAGAIN) {
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fprintf(stderr, "(EAGAIN)\n");
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fflush(stderr);
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if (len <= 0)
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continue;
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} else
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err(1, "read failed");
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}
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tlen += len;
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if ((BUFSIZE - tlen) < PSIZE)
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break;
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};
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#else
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tlen = len = read(d, buf, BUFSIZE);
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if (len < 0) {
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if (errno == EAGAIN) {
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fprintf(stderr, "(EAGAIN)\n");
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fflush(stderr);
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if (len <= 0)
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continue;
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} else
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err(1, "read failed");
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}
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#endif
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vec = 0;
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ptr = (u_int32_t *) buf;
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again:
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pkt = (struct fw_pkt *) ptr;
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#if 0
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fprintf(stderr, "%08x %08x %08x %08x\n",
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htonl(ptr[0]), htonl(ptr[1]),
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htonl(ptr[2]), htonl(ptr[3]));
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#endif
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ciph = (struct ciphdr *)(ptr + 1); /* skip iso header */
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if (ciph->fmt != CIP_FMT_DVCR)
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errx(1, "unknown format 0x%x", ciph->fmt);
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ptr = (u_int32_t *) (ciph + 1); /* skip cip header */
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#if 0
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if (ciph->fdf.dv.cyc != 0xffff && k == 0) {
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fprintf(stderr, "0x%04x\n", ntohs(ciph->fdf.dv.cyc));
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}
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#endif
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if (ntohs(pkt->mode.stream.len) <= sizeof(struct ciphdr))
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/* no payload */
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goto next;
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for (dv = (struct dvdbc *)ptr;
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(char *)dv < (char *)(ptr + ciph->len);
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dv+=6) {
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#if 0
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fprintf(stderr, "(%d,%d) ", dv->sct, dv->dseq);
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#endif
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if (dv->sct == DV_SCT_HEADER && dv->dseq == 0) {
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#if 0
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fprintf(stderr, "%d(%d) ", k, m);
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#else
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fprintf(stderr, "%d", k%10);
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#endif
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pal = ((dv->payload[0] & DV_DSF_12) != 0);
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nb = nblocks[pal];
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#if 1
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if (m > 0 && m != nb) {
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/* padding bad frame */
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npad = ((nb - m) % nb);
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if (npad < 0)
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npad += nb;
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fprintf(stderr, "(%d blocks padded)",
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npad);
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npad *= DSIZE;
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wbuf[vec].iov_base = pad;
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wbuf[vec++].iov_len = npad;
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if (vec >= NPACKET_R) {
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writev(fd, wbuf, vec);
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vec = 0;
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}
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}
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#endif
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k++;
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if (k % 30 == 0) { /* every second */
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fprintf(stderr, "\n");
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}
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fflush(stderr);
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m = 0;
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}
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if (k == 0 || (count > 0 && k > count))
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continue;
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m++;
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wbuf[vec].iov_base = (char *) dv;
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wbuf[vec++].iov_len = DSIZE;
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if (vec >= NPACKET_R) {
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writev(fd, wbuf, vec);
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vec = 0;
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}
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}
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ptr = (u_int32_t *)dv;
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next:
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if ((char *)ptr < buf + tlen)
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goto again;
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if (vec > 0)
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writev(fd, wbuf, vec);
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}
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close(fd);
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fprintf(stderr, "\n");
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return 0;
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}
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int
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dvsend(int d, char *filename, char ich, int count)
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{
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struct fw_isochreq isoreq;
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struct fw_isobufreq bufreq;
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struct dvdbc *dv;
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struct fw_pkt *pkt;
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int len, tlen, header, fd, frames, packets, vec, offset, nhdr, i;
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int system=0, pad_acc, cycle_acc, cycle, f_cycle, f_frac;
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struct iovec wbuf[NPACKET_T*2 + NEMPTY];
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char *pbuf;
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u_int32_t iso_data, iso_empty, hdr[NPACKET_T + NEMPTY][3];
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struct ciphdr *ciph;
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struct timeval start, end;
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double rtime;
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fd = open(filename, O_RDONLY);
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pbuf = (char *)malloc(DSIZE * NPACKET_T);
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bzero(wbuf, sizeof(wbuf));
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bufreq.rx.nchunk = 0;
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bufreq.rx.npacket = 0;
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bufreq.rx.psize = 0;
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bufreq.tx.nchunk = NCHUNK;
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bufreq.tx.npacket = NPACKET_T;
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bufreq.tx.psize = PSIZE;
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if (ioctl(d, FW_SSTBUF, &bufreq) < 0) {
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err(1, "ioctl");
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}
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isoreq.ch = ich & 0x3f;
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isoreq.tag = (ich >> 6) & 3;
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if( ioctl(d, FW_STSTREAM, &isoreq) < 0)
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err(1, "ioctl");
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pkt = (struct fw_pkt *) &iso_data;
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pkt->mode.stream.len = htons(DSIZE + sizeof(struct ciphdr));
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pkt->mode.stream.sy = 0;
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pkt->mode.stream.tcode = FWTCODE_STREAM;
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pkt->mode.stream.chtag = ich;
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iso_empty = iso_data;
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pkt = (struct fw_pkt *) &iso_empty;
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pkt->mode.stream.len = htons(sizeof(struct ciphdr));
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hdr[0][0] = iso_data;
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ciph = (struct ciphdr *)&hdr[0][1];
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ciph->src = 0;
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ciph->len = 120;
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ciph->dbc = 0;
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ciph->eoh1 = 1;
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ciph->fdf.dv.cyc = 0xffff;
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for (i = 1; i < NPACKET_T; i++) {
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bcopy(hdr[0], hdr[i], sizeof(hdr[0]));
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}
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gettimeofday(&start, NULL);
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#if 0
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fprintf(stderr, "%08x %08x %08x\n",
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htonl(hdr[0]), htonl(hdr[1]), htonl(hdr[2]));
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#endif
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frames = 0;
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packets = 0;
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pad_acc = 0;
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cycle = 1;
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cycle_acc = frame_cycle[system].d * cycle;
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while (1) {
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tlen = 0;
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while (tlen < DSIZE * NPACKET_T) {
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len = read(fd, pbuf + tlen, DSIZE * NPACKET_T - tlen);
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if (len <= 0) {
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if (tlen > 0)
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break;
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if (len < 0)
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warn("read");
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else
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printf("\nend of file\n");
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goto send_end;
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}
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tlen += len;
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}
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vec = 0;
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count = 0;
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offset = 0;
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nhdr = 0;
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next:
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dv = (struct dvdbc *)(pbuf + offset * DSIZE);
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#if 0
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header = (dv->sct == 0 && dv->dseq == 0);
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#else
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header = (packets % npackets[system] == 0);
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#endif
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ciph = (struct ciphdr *)&hdr[nhdr][1];
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if (header) {
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fprintf(stderr, "%d", frames % 10);
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frames ++;
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if (count > 0 && frames > count)
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break;
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if (frames % 30 == 0)
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fprintf(stderr, "\n");
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fflush(stderr);
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system = ((dv->payload[0] & DV_DSF_12) != 0);
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f_cycle = (cycle_acc / frame_cycle[system].d) & 0xf;
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f_frac = (cycle_acc % frame_cycle[system].d
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* CYCLE_FRAC) / frame_cycle[system].d;
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#if 0
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ciph->fdf.dv.cyc = htons(f_cycle << 12 | f_frac);
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#else
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ciph->fdf.dv.cyc = htons(cycle << 12 | f_frac);
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#endif
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cycle_acc += frame_cycle[system].n;
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cycle_acc %= frame_cycle[system].d * 0x10;
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} else {
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ciph->fdf.dv.cyc = 0xffff;
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}
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ciph->dbc = packets++ % 256;
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pad_acc += pad_rate[system].n;
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if (pad_acc >= pad_rate[system].d) {
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pad_acc -= pad_rate[system].d;
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bcopy(hdr[nhdr], hdr[nhdr+1], sizeof(hdr[0]));
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hdr[nhdr][0] = iso_empty;
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wbuf[vec].iov_base = (char *)hdr[nhdr];
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wbuf[vec++].iov_len = sizeof(hdr[0]);
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nhdr ++;
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cycle ++;
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}
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hdr[nhdr][0] = iso_data;
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wbuf[vec].iov_base = (char *)hdr[nhdr];
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wbuf[vec++].iov_len = sizeof(hdr[0]);
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wbuf[vec].iov_base = (char *)dv;
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wbuf[vec++].iov_len = DSIZE;
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nhdr ++;
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cycle ++;
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offset ++;
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if (offset * DSIZE < tlen)
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goto next;
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again:
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len = writev(d, wbuf, vec);
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if (len < 0) {
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if (errno == EAGAIN) {
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fprintf(stderr, "(EAGAIN)\n");
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fflush(stderr);
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goto again;
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}
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err(1, "write failed");
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}
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}
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close(fd);
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fprintf(stderr, "\n");
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send_end:
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gettimeofday(&end, NULL);
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rtime = end.tv_sec - start.tv_sec
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+ (end.tv_usec - start.tv_usec) * 1e-6;
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fprintf(stderr, "%d frames, %.2f secs, %.2f frames/sec\n",
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frames, rtime, frames/rtime);
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return 0;
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}
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#if 0
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int
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main(int argc, char *argv[])
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{
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extern char *optarg;
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extern int optind;
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int ch;
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int fd;
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char devname[] = "/dev/fw0";
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while ((ch = getopt(argc, argv, "I:")) != -1){
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switch(ch) {
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case 'I':
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strcpy(devname, optarg);
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break;
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default:
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usage();
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc < 2)
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usage();
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fd = open(devname, O_RDWR);
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if (fd < 0)
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err(1, "open");
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dvrec(fd, argv[0], (TAG<<6) | CHANNEL, atoi(argv[1]));
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close(fd);
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exit(0);
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}
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#endif
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