add section filter support
This commit is contained in:
jmcneill
parent
8b2b6e057f
commit
d3ea21c055
@ -1,4 +1,4 @@
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/* $NetBSD: dtv_buffer.c,v 1.4 2011/07/12 00:57:19 jmcneill Exp $ */
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/* $NetBSD: dtv_buffer.c,v 1.5 2011/07/13 22:43:04 jmcneill Exp $ */
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/*-
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* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
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@ -33,7 +33,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dtv_buffer.c,v 1.4 2011/07/12 00:57:19 jmcneill Exp $");
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__KERNEL_RCSID(0, "$NetBSD: dtv_buffer.c,v 1.5 2011/07/13 22:43:04 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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@ -99,6 +99,7 @@ void
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dtv_submit_payload(device_t self, const struct dtv_payload *payload)
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{
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struct dtv_softc *sc = device_private(self);
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struct dtv_demux *demux;
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struct dtv_ts *ts = &sc->sc_ts;
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const uint8_t *tspkt;
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unsigned int npkts, i;
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@ -106,8 +107,15 @@ dtv_submit_payload(device_t self, const struct dtv_payload *payload)
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tspkt = payload->data;
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npkts = payload->size / TS_PKTLEN;
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for (i = 0; i < npkts; i++) {
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if (TS_HAS_SYNC(tspkt) && ts->ts_pidfilter[TS_PID(tspkt)]) {
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dtv_buffer_write(sc, tspkt, TS_PKTLEN);
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if (TS_HAS_SYNC(tspkt)) {
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if (ts->ts_pidfilter[TS_PID(tspkt)]) {
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dtv_buffer_write(sc, tspkt, TS_PKTLEN);
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}
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mutex_enter(&sc->sc_demux_lock);
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TAILQ_FOREACH(demux, &sc->sc_demux_list, dd_entries) {
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dtv_demux_write(demux, tspkt, TS_PKTLEN);
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}
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mutex_exit(&sc->sc_demux_lock);
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}
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tspkt += TS_PKTLEN;
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}
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509
sys/dev/dtv/dtv_demux.c
Normal file
509
sys/dev/dtv/dtv_demux.c
Normal file
@ -0,0 +1,509 @@
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/* $NetBSD: dtv_demux.c,v 1.1 2011/07/13 22:43:04 jmcneill Exp $ */
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/*-
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* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
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* 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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* This product includes software developed by Jared D. McNeill.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dtv_demux.c,v 1.1 2011/07/13 22:43:04 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/conf.h>
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#include <sys/kmem.h>
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#include <sys/device.h>
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#include <sys/select.h>
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#include <sys/filedesc.h>
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#include <sys/file.h>
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#include <sys/poll.h>
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#include <sys/vnode.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#include <net/if_ether.h> /* for ether_crc32_be */
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#include <dev/dtv/dtvvar.h>
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static int dtv_demux_read(struct file *, off_t *, struct uio *,
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kauth_cred_t, int);
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static int dtv_demux_ioctl(struct file *, u_long, void *);
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static int dtv_demux_poll(struct file *, int);
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static int dtv_demux_close(struct file *);
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static const struct fileops dtv_demux_fileops = {
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.fo_read = dtv_demux_read,
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.fo_write = fbadop_write,
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.fo_ioctl = dtv_demux_ioctl,
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.fo_fcntl = fnullop_fcntl,
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.fo_poll = dtv_demux_poll,
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.fo_stat = fbadop_stat,
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.fo_close = dtv_demux_close,
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.fo_kqfilter = fnullop_kqfilter,
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.fo_restart = fnullop_restart,
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};
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static uint32_t crc_table[256] = {
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0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,
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0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,
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0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
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0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,
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0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,
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0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
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0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,
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0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,
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0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
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0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,
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0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,
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0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
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0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,
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0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,
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0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
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0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,
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0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,
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0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
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0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,
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0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,
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0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
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0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,
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0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,
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0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
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0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,
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0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,
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0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
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0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,
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0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,
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0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
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0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,
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0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,
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0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
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0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,
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0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,
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0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
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0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,
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0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,
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0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
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0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,
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0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,
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0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
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0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,
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0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,
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0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
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0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,
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0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,
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0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
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0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,
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0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,
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0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
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0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,
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0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,
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0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
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0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,
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0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,
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0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
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0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,
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0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,
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0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
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0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,
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0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,
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0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
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0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
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};
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static uint32_t
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dtv_demux_crc32(uint8_t *buf, int len)
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{
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const uint32_t *crc_tab = crc_table;
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uint32_t CRC = 0xffffffff;
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int i;
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for (i = 0; i < len; i++)
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CRC = (CRC << 8) ^ crc_tab[((CRC >> 24) ^ *buf++) & 0xff];
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return CRC;
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}
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int
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dtv_demux_open(struct dtv_softc *sc, int flags, int mode, lwp_t *l)
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{
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struct file *fp;
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struct dtv_demux *demux;
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int error, fd;
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demux = kmem_zalloc(sizeof(*demux), KM_SLEEP);
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if (demux == NULL)
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return ENOMEM;
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demux->dd_sc = sc;
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demux->dd_mode = DTV_DEMUX_MODE_NONE;
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selinit(&demux->dd_sel);
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mutex_init(&demux->dd_lock, MUTEX_DEFAULT, IPL_VM);
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cv_init(&demux->dd_section_cv, "dtvsec");
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error = fd_allocfile(&fp, &fd);
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if (error) {
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kmem_free(demux, sizeof(*demux));
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return error;
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}
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mutex_enter(&sc->sc_demux_lock);
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TAILQ_INSERT_TAIL(&sc->sc_demux_list, demux, dd_entries);
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mutex_exit(&sc->sc_demux_lock);
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return fd_clone(fp, fd, flags, &dtv_demux_fileops, demux);
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}
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int
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dtv_demux_close(struct file *fp)
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{
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struct dtv_demux *demux = fp->f_data;
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struct dtv_softc *sc;
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if (demux == NULL)
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return ENXIO;
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fp->f_data = NULL;
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sc = demux->dd_sc;
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mutex_enter(&sc->sc_demux_lock);
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TAILQ_REMOVE(&sc->sc_demux_list, demux, dd_entries);
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mutex_exit(&sc->sc_demux_lock);
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mutex_destroy(&demux->dd_lock);
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cv_destroy(&demux->dd_section_cv);
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kmem_free(demux, sizeof(*demux));
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dtv_close_common(sc);
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return 0;
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}
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static int
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dtv_demux_ioctl1(struct dtv_demux *demux, u_long cmd, void *data)
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{
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struct dtv_demux *dd;
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struct dtv_softc *sc;
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struct dmx_pes_filter_params *pesfilt;
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struct dmx_sct_filter_params *sctfilt;
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uint16_t pid;
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unsigned int demux_running;
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int error;
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if (demux == NULL)
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return ENXIO;
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sc = demux->dd_sc;
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switch (cmd) {
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case DMX_START:
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error = 0;
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demux_running = 0;
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mutex_enter(&sc->sc_demux_lock);
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TAILQ_FOREACH(dd, &sc->sc_demux_list, dd_entries) {
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if (dd->dd_running)
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demux_running++;
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}
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if (demux_running == 0) {
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error = dtv_buffer_setup(sc);
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if (error)
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return error;
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error = dtv_device_start_transfer(sc);
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}
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if (error == 0)
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demux->dd_running = true;
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mutex_exit(&sc->sc_demux_lock);
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return error;
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case DMX_STOP:
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error = 0;
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demux_running = 0;
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mutex_enter(&sc->sc_demux_lock);
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demux->dd_running = false;
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TAILQ_FOREACH(dd, &sc->sc_demux_list, dd_entries) {
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if (dd->dd_running)
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demux_running++;
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}
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if (demux_running == 0)
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error = dtv_device_stop_transfer(sc);
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mutex_exit(&sc->sc_demux_lock);
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return error;
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case DMX_SET_BUFFER_SIZE:
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return 0;
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case DMX_SET_FILTER:
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sctfilt = data;
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if (sctfilt->pid >= 0x2000)
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return EINVAL;
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demux->dd_secfilt.params = *sctfilt;
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demux->dd_secfilt.rp = demux->dd_secfilt.wp = 0;
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demux->dd_secfilt.nsections = 0;
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demux->dd_secfilt.overflow = false;
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demux->dd_mode = DTV_DEMUX_MODE_SECTION;
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if (sctfilt->flags & DMX_IMMEDIATE_START) {
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error = dtv_demux_ioctl1(demux, DMX_START, NULL);
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if (error)
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return error;
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}
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return 0;
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case DMX_SET_PES_FILTER:
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pesfilt = data;
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if (pesfilt->input != DMX_IN_FRONTEND)
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return EINVAL;
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if (pesfilt->output != DMX_OUT_TS_TAP)
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return EINVAL;
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if (pesfilt->pes_type != DMX_PES_OTHER)
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return EINVAL;
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error = dtv_demux_ioctl1(demux, DMX_ADD_PID, &pesfilt->pid);
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if (error)
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return error;
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if (pesfilt->flags & DMX_IMMEDIATE_START) {
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error = dtv_demux_ioctl1(demux, DMX_START, NULL);
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if (error)
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return error;
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}
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return 0;
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case DMX_ADD_PID:
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pid = *(uint16_t *)data;
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if (pid > 0x2000)
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return EINVAL;
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demux->dd_mode = DTV_DEMUX_MODE_PES;
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if (pid == 0x2000) {
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memset(sc->sc_ts.ts_pidfilter, 1,
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sizeof(sc->sc_ts.ts_pidfilter));
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} else {
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sc->sc_ts.ts_pidfilter[pid] = 1;
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}
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return 0;
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case DMX_REMOVE_PID:
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pid = *(uint16_t *)data;
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if (pid > 0x2000)
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return EINVAL;
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demux->dd_mode = DTV_DEMUX_MODE_PES;
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if (pid == 0x2000) {
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memset(sc->sc_ts.ts_pidfilter, 0,
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sizeof(sc->sc_ts.ts_pidfilter));
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} else {
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sc->sc_ts.ts_pidfilter[pid] = 0;
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}
|
||||
return 0;
|
||||
default:
|
||||
return EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
dtv_demux_ioctl(struct file *fp, u_long cmd, void *data)
|
||||
{
|
||||
return dtv_demux_ioctl1(fp->f_data, cmd, data);
|
||||
}
|
||||
|
||||
static int
|
||||
dtv_demux_poll(struct file *fp, int events)
|
||||
{
|
||||
struct dtv_demux *demux = fp->f_data;
|
||||
int revents = 0;
|
||||
|
||||
if (demux == NULL)
|
||||
return POLLERR;
|
||||
|
||||
mutex_enter(&demux->dd_lock);
|
||||
if (demux->dd_secfilt.nsections > 0) {
|
||||
revents |= POLLIN;
|
||||
} else {
|
||||
selrecord(curlwp, &demux->dd_sel);
|
||||
}
|
||||
mutex_exit(&demux->dd_lock);
|
||||
|
||||
return revents;
|
||||
}
|
||||
|
||||
static int
|
||||
dtv_demux_read(struct file *fp, off_t *offp, struct uio *uio,
|
||||
kauth_cred_t cred, int flags)
|
||||
{
|
||||
struct dtv_demux *demux = fp->f_data;
|
||||
struct dtv_ts_section sec;
|
||||
int error;
|
||||
|
||||
if (demux == NULL)
|
||||
return ENXIO;
|
||||
|
||||
if (demux->dd_mode != DTV_DEMUX_MODE_SECTION)
|
||||
return EIO;
|
||||
|
||||
mutex_enter(&demux->dd_lock);
|
||||
while (demux->dd_secfilt.nsections == 0) {
|
||||
if (flags & IO_NDELAY) {
|
||||
mutex_exit(&demux->dd_lock);
|
||||
return EWOULDBLOCK;
|
||||
}
|
||||
error = cv_wait_sig(&demux->dd_section_cv, &demux->dd_lock);
|
||||
if (error) {
|
||||
mutex_exit(&demux->dd_lock);
|
||||
return error;
|
||||
}
|
||||
}
|
||||
sec = demux->dd_secfilt.section[demux->dd_secfilt.rp];
|
||||
demux->dd_secfilt.rp++;
|
||||
if (demux->dd_secfilt.rp >= __arraycount(demux->dd_secfilt.section))
|
||||
demux->dd_secfilt.rp = 0;
|
||||
demux->dd_secfilt.nsections--;
|
||||
mutex_exit(&demux->dd_lock);
|
||||
|
||||
return uiomove(sec.sec_buf, sec.sec_length, uio);
|
||||
}
|
||||
|
||||
static bool
|
||||
dtv_demux_check_crc(struct dtv_demux *demux, struct dtv_ts_section *sec)
|
||||
{
|
||||
uint32_t crc, sec_crc;
|
||||
|
||||
/* if section_syntax_indicator is not set, there is no CRC */
|
||||
if ((sec->sec_buf[1] & 0x80) == 0)
|
||||
return false;
|
||||
|
||||
sec_crc = be32dec(&sec->sec_buf[sec->sec_length - 4]);
|
||||
crc = dtv_demux_crc32(&sec->sec_buf[0], sec->sec_length - 4);
|
||||
|
||||
return crc == sec_crc;
|
||||
}
|
||||
|
||||
int
|
||||
dtv_demux_write(struct dtv_demux *demux, const uint8_t *tspkt, size_t tspktlen)
|
||||
{
|
||||
struct dtv_ts_section *sec;
|
||||
dmx_filter_t *dmxfilt = &demux->dd_secfilt.params.filter;
|
||||
const uint8_t *p;
|
||||
uint16_t section_length;
|
||||
int brem, avail;
|
||||
|
||||
KASSERT(tspktlen == TS_PKTLEN);
|
||||
|
||||
if (demux->dd_mode != DTV_DEMUX_MODE_SECTION)
|
||||
return 0;
|
||||
if (TS_PID(tspkt) != demux->dd_secfilt.params.pid)
|
||||
return 0;
|
||||
if (TS_HAS_PAYLOAD(tspkt) == 0)
|
||||
return 0;
|
||||
|
||||
mutex_enter(&demux->dd_lock);
|
||||
if (demux->dd_secfilt.nsections ==
|
||||
__arraycount(demux->dd_secfilt.section)) {
|
||||
demux->dd_secfilt.overflow = true;
|
||||
goto done;
|
||||
}
|
||||
sec = &demux->dd_secfilt.section[demux->dd_secfilt.wp];
|
||||
/* If we have no bytes in our buffer, wait for payload unit start */
|
||||
if (sec->sec_bytesused == 0 && TS_HAS_PUSI(tspkt) == 0)
|
||||
goto done;
|
||||
|
||||
/* find payload start */
|
||||
p = tspkt + 4;
|
||||
if (TS_HAS_AF(tspkt)) {
|
||||
if (*p > 182) /* AF length with payload is between 0-182 */
|
||||
goto done;
|
||||
p += (1 + *p);
|
||||
}
|
||||
if (TS_HAS_PUSI(tspkt)) {
|
||||
p += (1 + *p);
|
||||
}
|
||||
|
||||
brem = tspktlen - (p - tspkt);
|
||||
|
||||
if (TS_HAS_PUSI(tspkt)) {
|
||||
if (brem < 16)
|
||||
return 0;
|
||||
|
||||
section_length = ((p[1] & 0xf) << 8) | p[2];
|
||||
|
||||
/* table_id filter */
|
||||
if (dmxfilt->mask[0]) {
|
||||
if ((p[0] & dmxfilt->mask[0]) != dmxfilt->filter[0])
|
||||
goto done;
|
||||
}
|
||||
/* table_id_ext filter */
|
||||
if (dmxfilt->mask[1] && dmxfilt->mask[2]) {
|
||||
if (section_length < 2 || (p[1] & 0x80) == 0)
|
||||
goto done;
|
||||
if ((p[3] & dmxfilt->mask[1]) != dmxfilt->filter[1])
|
||||
goto done;
|
||||
if ((p[4] & dmxfilt->mask[2]) != dmxfilt->filter[2])
|
||||
goto done;
|
||||
}
|
||||
|
||||
sec->sec_length = section_length + 3;
|
||||
}
|
||||
|
||||
/* If we have bytes pending and we see payload unit start, flush buf */
|
||||
if (sec->sec_bytesused > 0 && TS_HAS_PUSI(tspkt))
|
||||
sec->sec_bytesused = sec->sec_length = 0;
|
||||
|
||||
avail = min(sec->sec_length - sec->sec_bytesused, brem);
|
||||
if (avail < 0)
|
||||
return 0;
|
||||
|
||||
memcpy(&sec->sec_buf[sec->sec_bytesused], p, avail);
|
||||
sec->sec_bytesused += avail;
|
||||
|
||||
if (sec->sec_bytesused == sec->sec_length) {
|
||||
if ((demux->dd_secfilt.params.flags & DMX_CHECK_CRC) &&
|
||||
dtv_demux_check_crc(demux, sec) == false) {
|
||||
/* discard packet */
|
||||
sec->sec_bytesused = sec->sec_length = 0;
|
||||
goto done;
|
||||
}
|
||||
|
||||
demux->dd_secfilt.wp++;
|
||||
if (demux->dd_secfilt.wp >=
|
||||
__arraycount(demux->dd_secfilt.section))
|
||||
demux->dd_secfilt.wp = 0;
|
||||
demux->dd_secfilt.nsections++;
|
||||
cv_broadcast(&demux->dd_section_cv);
|
||||
selnotify(&demux->dd_sel, 0, 0);
|
||||
|
||||
if (demux->dd_secfilt.params.flags & DMX_ONESHOT)
|
||||
dtv_demux_ioctl1(demux, DMX_STOP, NULL);
|
||||
}
|
||||
|
||||
done:
|
||||
mutex_exit(&demux->dd_lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: dtv_device.c,v 1.4 2011/07/12 00:57:19 jmcneill Exp $ */
|
||||
/* $NetBSD: dtv_device.c,v 1.5 2011/07/13 22:43:04 jmcneill Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
|
||||
@ -33,7 +33,7 @@
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: dtv_device.c,v 1.4 2011/07/12 00:57:19 jmcneill Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: dtv_device.c,v 1.5 2011/07/13 22:43:04 jmcneill Exp $");
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/conf.h>
|
||||
@ -98,7 +98,8 @@ dtv_attach(device_t parent, device_t self, void *aa)
|
||||
sc->sc_dev = self;
|
||||
sc->sc_hw = daa->hw;
|
||||
sc->sc_priv = daa->priv;
|
||||
atomic_swap_uint(&sc->sc_open, 0);
|
||||
sc->sc_open = 0;
|
||||
mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
|
||||
|
||||
ds->ds_nbufs = 0;
|
||||
ds->ds_buf = NULL;
|
||||
@ -115,6 +116,9 @@ dtv_attach(device_t parent, device_t self, void *aa)
|
||||
return;
|
||||
}
|
||||
|
||||
mutex_init(&sc->sc_demux_lock, MUTEX_DEFAULT, IPL_VM);
|
||||
TAILQ_INIT(&sc->sc_demux_list);
|
||||
|
||||
dtv_device_get_devinfo(sc, &info);
|
||||
|
||||
aprint_naive("\n");
|
||||
@ -149,6 +153,8 @@ dtv_detach(device_t self, int flags)
|
||||
dtv_buffer_realloc(sc, 0);
|
||||
dtv_scatter_buf_destroy(&ds->ds_data);
|
||||
|
||||
mutex_destroy(&sc->sc_demux_lock);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -196,7 +202,6 @@ dtvopen(dev_t dev, int flags, int mode, lwp_t *l)
|
||||
{
|
||||
struct dtv_softc *sc;
|
||||
struct dtv_ts *ts;
|
||||
unsigned int n;
|
||||
int error;
|
||||
|
||||
if ((sc = device_lookup_private(&dtv_cd, DTVUNIT(dev))) == NULL)
|
||||
@ -205,17 +210,20 @@ dtvopen(dev_t dev, int flags, int mode, lwp_t *l)
|
||||
return ENODEV;
|
||||
ts = &sc->sc_ts;
|
||||
|
||||
n = atomic_cas_uint(&sc->sc_open, 0, 1);
|
||||
if (n == 0) {
|
||||
mutex_enter(&sc->sc_lock);
|
||||
if (sc->sc_open == 0) {
|
||||
error = dtv_device_open(sc, flags);
|
||||
if (error) {
|
||||
atomic_swap_uint(&sc->sc_open, 0);
|
||||
if (error)
|
||||
return error;
|
||||
}
|
||||
sc->sc_bufsize = DTV_DEFAULT_BUFSIZE;
|
||||
sc->sc_bufsize_chg = true;
|
||||
memset(ts->ts_pidfilter, 0, sizeof(ts->ts_pidfilter));
|
||||
}
|
||||
++sc->sc_open;
|
||||
mutex_exit(&sc->sc_lock);
|
||||
|
||||
if (ISDTVDEMUX(dev))
|
||||
return dtv_demux_open(sc, flags, mode, l);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -228,9 +236,7 @@ dtvclose(dev_t dev, int flags, int mode, lwp_t *l)
|
||||
if ((sc = device_lookup_private(&dtv_cd, DTVUNIT(dev))) == NULL)
|
||||
return ENXIO;
|
||||
|
||||
dtv_device_close(sc);
|
||||
dtv_buffer_destroy(sc);
|
||||
atomic_swap_uint(&sc->sc_open, 0);
|
||||
dtv_close_common(sc);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -259,8 +265,6 @@ dtvioctl(dev_t dev, u_long cmd, void *ptr, int flags, lwp_t *l)
|
||||
|
||||
if (ISDTVFRONTEND(dev)) {
|
||||
return dtv_frontend_ioctl(sc, cmd, ptr, flags);
|
||||
} else if (ISDTVDEMUX(dev)) {
|
||||
return dtv_demux_ioctl(sc, cmd, ptr, flags);
|
||||
}
|
||||
|
||||
return EINVAL;
|
||||
@ -276,8 +280,6 @@ dtvpoll(dev_t dev, int events, lwp_t *l)
|
||||
|
||||
if (ISDTVFRONTEND(dev)) {
|
||||
return POLLPRI|POLLIN; /* XXX event */
|
||||
} else if (ISDTVDEMUX(dev)) {
|
||||
return POLLIN|POLLOUT; /* XXX */
|
||||
} else if (ISDTVDVR(dev)) {
|
||||
return dtv_buffer_poll(sc, events, l);
|
||||
}
|
||||
@ -285,6 +287,19 @@ dtvpoll(dev_t dev, int events, lwp_t *l)
|
||||
return POLLERR;
|
||||
}
|
||||
|
||||
void
|
||||
dtv_close_common(struct dtv_softc *sc)
|
||||
{
|
||||
mutex_enter(&sc->sc_lock);
|
||||
KASSERT(sc->sc_open > 0);
|
||||
--sc->sc_open;
|
||||
if (sc->sc_open == 0) {
|
||||
dtv_device_close(sc);
|
||||
dtv_buffer_destroy(sc);
|
||||
}
|
||||
mutex_exit(&sc->sc_lock);
|
||||
}
|
||||
|
||||
int
|
||||
dtv_print(void *arg, const char *pnp)
|
||||
{
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: dtv_ioctl.c,v 1.2 2011/07/09 17:55:20 jmcneill Exp $ */
|
||||
/* $NetBSD: dtv_ioctl.c,v 1.3 2011/07/13 22:43:04 jmcneill Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
|
||||
@ -33,7 +33,7 @@
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__KERNEL_RCSID(0, "$NetBSD: dtv_ioctl.c,v 1.2 2011/07/09 17:55:20 jmcneill Exp $");
|
||||
__KERNEL_RCSID(0, "$NetBSD: dtv_ioctl.c,v 1.3 2011/07/13 22:43:04 jmcneill Exp $");
|
||||
|
||||
#include <sys/param.h>
|
||||
#include <sys/types.h>
|
||||
@ -69,69 +69,3 @@ dtv_frontend_ioctl(struct dtv_softc *sc, u_long cmd, void *data, int flags)
|
||||
return EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
dtv_demux_ioctl(struct dtv_softc *sc, u_long cmd, void *data, int flags)
|
||||
{
|
||||
struct dmx_pes_filter_params *pesfilt;
|
||||
uint16_t pid;
|
||||
int error;
|
||||
|
||||
switch (cmd) {
|
||||
case DMX_START:
|
||||
error = dtv_buffer_setup(sc);
|
||||
if (error)
|
||||
return error;
|
||||
return dtv_device_start_transfer(sc);
|
||||
case DMX_STOP:
|
||||
return dtv_device_stop_transfer(sc);
|
||||
case DMX_SET_BUFFER_SIZE:
|
||||
return 0;
|
||||
case DMX_SET_PES_FILTER:
|
||||
pesfilt = data;
|
||||
|
||||
if (pesfilt->input != DMX_IN_FRONTEND)
|
||||
return EINVAL;
|
||||
if (pesfilt->output != DMX_OUT_TS_TAP)
|
||||
return EINVAL;
|
||||
if (pesfilt->pes_type != DMX_PES_OTHER)
|
||||
return EINVAL;
|
||||
|
||||
error = dtv_demux_ioctl(sc, DMX_ADD_PID, &pesfilt->pid, flags);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
if (pesfilt->flags & DMX_IMMEDIATE_START) {
|
||||
error = dtv_demux_ioctl(sc, DMX_START, NULL, flags);
|
||||
if (error)
|
||||
return error;
|
||||
}
|
||||
return 0;
|
||||
case DMX_ADD_PID:
|
||||
pid = *(uint16_t *)data;
|
||||
if (pid > 0x2000)
|
||||
return EINVAL;
|
||||
|
||||
if (pid == 0x2000) {
|
||||
memset(sc->sc_ts.ts_pidfilter, 1,
|
||||
sizeof(sc->sc_ts.ts_pidfilter));
|
||||
} else {
|
||||
sc->sc_ts.ts_pidfilter[pid] = 1;
|
||||
}
|
||||
return 0;
|
||||
case DMX_REMOVE_PID:
|
||||
pid = *(uint16_t *)data;
|
||||
if (pid > 0x2000)
|
||||
return EINVAL;
|
||||
|
||||
if (pid == 0x2000) {
|
||||
memset(sc->sc_ts.ts_pidfilter, 0,
|
||||
sizeof(sc->sc_ts.ts_pidfilter));
|
||||
} else {
|
||||
sc->sc_ts.ts_pidfilter[pid] = 0;
|
||||
}
|
||||
return 0;
|
||||
default:
|
||||
return EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* $NetBSD: dtvvar.h,v 1.3 2011/07/12 00:57:19 jmcneill Exp $ */
|
||||
/* $NetBSD: dtvvar.h,v 1.4 2011/07/13 22:43:04 jmcneill Exp $ */
|
||||
|
||||
/*-
|
||||
* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
|
||||
@ -43,7 +43,11 @@
|
||||
|
||||
#define TS_PKTLEN 188
|
||||
#define TS_HAS_SYNC(_tspkt) ((_tspkt)[0] == 0x47)
|
||||
#define TS_HAS_PUSI(_tspkt) ((_tspkt)[1] & 0x40)
|
||||
#define TS_HAS_AF(_tspkt) ((_tspkt)[3] & 0x20)
|
||||
#define TS_HAS_PAYLOAD(_tspkt) ((_tspkt)[3] & 0x10)
|
||||
#define TS_PID(_tspkt) ((((_tspkt)[1] & 0x1f) << 8) | (_tspkt)[2])
|
||||
#define TS_SECTION_MAXLEN 4096
|
||||
|
||||
struct dtv_buffer {
|
||||
uint32_t db_offset;
|
||||
@ -65,6 +69,38 @@ struct dtv_stream {
|
||||
uint32_t ds_bytesread;
|
||||
};
|
||||
|
||||
typedef enum {
|
||||
DTV_DEMUX_MODE_NONE,
|
||||
DTV_DEMUX_MODE_SECTION,
|
||||
DTV_DEMUX_MODE_PES,
|
||||
} dtv_demux_mode_t;
|
||||
|
||||
struct dtv_ts_section {
|
||||
uint8_t sec_buf[TS_SECTION_MAXLEN];
|
||||
uint16_t sec_bytesused;
|
||||
uint16_t sec_length;
|
||||
};
|
||||
|
||||
struct dtv_demux {
|
||||
struct dtv_softc *dd_sc;
|
||||
struct selinfo dd_sel;
|
||||
kmutex_t dd_lock;
|
||||
kcondvar_t dd_section_cv;
|
||||
|
||||
bool dd_running;
|
||||
|
||||
dtv_demux_mode_t dd_mode;
|
||||
struct {
|
||||
struct dmx_sct_filter_params params;
|
||||
struct dtv_ts_section section[16];
|
||||
unsigned int rp, wp;
|
||||
unsigned int nsections;
|
||||
bool overflow;
|
||||
} dd_secfilt;
|
||||
|
||||
TAILQ_ENTRY(dtv_demux) dd_entries;
|
||||
};
|
||||
|
||||
struct dtv_ts {
|
||||
uint8_t ts_pidfilter[0x2000];
|
||||
kmutex_t ts_lock;
|
||||
@ -78,12 +114,16 @@ struct dtv_softc {
|
||||
bool sc_dying;
|
||||
|
||||
unsigned int sc_open;
|
||||
kmutex_t sc_lock;
|
||||
|
||||
size_t sc_bufsize;
|
||||
bool sc_bufsize_chg;
|
||||
|
||||
struct dtv_stream sc_stream;
|
||||
struct dtv_ts sc_ts;
|
||||
|
||||
TAILQ_HEAD(, dtv_demux) sc_demux_list;
|
||||
kmutex_t sc_demux_lock;
|
||||
};
|
||||
|
||||
#define dtv_device_get_devinfo(sc, info) \
|
||||
@ -106,7 +146,9 @@ struct dtv_softc {
|
||||
((sc)->sc_hw->stop_transfer((sc)->sc_priv))
|
||||
|
||||
int dtv_frontend_ioctl(struct dtv_softc *, u_long, void *, int);
|
||||
int dtv_demux_ioctl(struct dtv_softc *, u_long, void *, int);
|
||||
|
||||
int dtv_demux_open(struct dtv_softc *, int, int, lwp_t *);
|
||||
int dtv_demux_write(struct dtv_demux *, const uint8_t *, size_t);
|
||||
|
||||
int dtv_buffer_realloc(struct dtv_softc *, size_t);
|
||||
int dtv_buffer_setup(struct dtv_softc *);
|
||||
@ -114,4 +156,6 @@ int dtv_buffer_destroy(struct dtv_softc *);
|
||||
int dtv_buffer_read(struct dtv_softc *, struct uio *, int);
|
||||
int dtv_buffer_poll(struct dtv_softc *, int, lwp_t *);
|
||||
|
||||
void dtv_close_common(struct dtv_softc *);
|
||||
|
||||
#endif /* !_DEV_DTV_DTVVAR_H */
|
||||
|
||||
@ -1,10 +1,11 @@
|
||||
# $NetBSD: files.dtv,v 1.1 2011/07/09 14:46:56 jmcneill Exp $
|
||||
# $NetBSD: files.dtv,v 1.2 2011/07/13 22:43:04 jmcneill Exp $
|
||||
|
||||
define dtvbus { }
|
||||
|
||||
device dtv
|
||||
attach dtv at dtvbus
|
||||
file dev/dtv/dtv_buffer.c dtv
|
||||
file dev/dtv/dtv_demux.c dtv
|
||||
file dev/dtv/dtv_device.c dtv
|
||||
file dev/dtv/dtv_ioctl.c dtv
|
||||
file dev/dtv/dtv_scatter.c dtv
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user