mirror of
https://github.com/mpv-player/mpv
synced 2024-12-26 17:12:36 +00:00
262 lines
6.8 KiB
C
262 lines
6.8 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPLAYER_VCD_READ_FBSD_H
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#define MPLAYER_VCD_READ_FBSD_H
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#define _XOPEN_SOURCE 500
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#include <sys/types.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include <sys/cdio.h>
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#include <sys/ioctl.h>
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#include <libavutil/intreadwrite.h>
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#define VCD_NETBSD 1
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#endif
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#ifdef VCD_NETBSD
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#include <sys/scsiio.h>
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#define TOCADDR(te) ((te).data->addr)
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#define READ_TOC CDIOREADTOCENTRYS
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#else
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#include <sys/cdrio.h>
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#define TOCADDR(te) ((te).entry.addr)
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#define READ_TOC CDIOREADTOCENTRY
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#endif
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#include "mpvcore/mp_msg.h"
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//=================== VideoCD ==========================
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#define CDROM_LEADOUT 0xAA
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typedef struct {
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uint8_t sync [12];
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uint8_t header [4];
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uint8_t subheader [8];
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uint8_t data [2324];
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uint8_t spare [4];
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} cdsector_t;
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#ifdef VCD_NETBSD
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typedef struct ioc_read_toc_entry vcd_tocentry;
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#else
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typedef struct ioc_read_toc_single_entry vcd_tocentry;
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#endif
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typedef struct mp_vcd_priv_st {
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int fd;
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vcd_tocentry entry;
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#ifdef VCD_NETBSD
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struct cd_toc_entry entry_data;
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#else
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cdsector_t buf;
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#endif
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struct ioc_toc_header tochdr;
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} mp_vcd_priv_t;
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static inline void
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vcd_set_msf(mp_vcd_priv_t* vcd, unsigned int sect)
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{
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#ifdef VCD_NETBSD
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vcd->entry.data = &vcd->entry_data;
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#endif
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sect += 150;
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TOCADDR(vcd->entry).msf.frame = sect % 75;
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sect = sect / 75;
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TOCADDR(vcd->entry).msf.second = sect % 60;
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sect = sect / 60;
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TOCADDR(vcd->entry).msf.minute = sect;
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}
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static inline void
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vcd_inc_msf(mp_vcd_priv_t* vcd)
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{
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#ifdef VCD_NETBSD
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vcd->entry.data = &vcd->entry_data;
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#endif
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TOCADDR(vcd->entry).msf.frame++;
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if (TOCADDR(vcd->entry).msf.frame==75){
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TOCADDR(vcd->entry).msf.frame=0;
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TOCADDR(vcd->entry).msf.second++;
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if (TOCADDR(vcd->entry).msf.second==60){
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TOCADDR(vcd->entry).msf.second=0;
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TOCADDR(vcd->entry).msf.minute++;
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}
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}
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}
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static inline unsigned int
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vcd_get_msf(mp_vcd_priv_t* vcd)
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{
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#ifdef VCD_NETBSD
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vcd->entry.data = &vcd->entry_data;
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#endif
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return TOCADDR(vcd->entry).msf.frame +
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(TOCADDR(vcd->entry).msf.second +
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TOCADDR(vcd->entry).msf.minute * 60) * 75 - 150;
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}
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/**
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* \brief read a TOC entry
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* \param fd device to read from
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* \param dst buffer to read data into
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* \param nr track number to read info for
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* \return 1 on success, 0 on failure
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*/
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static int
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read_toc_entry(mp_vcd_priv_t *vcd, int nr)
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{
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vcd->entry.address_format = CD_MSF_FORMAT;
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#ifdef VCD_NETBSD
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vcd->entry.data_len = sizeof(struct cd_toc_entry);
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vcd->entry.data = &vcd->entry_data;
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vcd->entry.starting_track = nr;
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#else
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vcd->entry.track = nr;
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#endif
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if (ioctl(vcd->fd, READ_TOC, &vcd->entry) == -1) {
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mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc entry: %s\n",strerror(errno));
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return 0;
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}
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return 1;
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}
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static int
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vcd_seek_to_track(mp_vcd_priv_t* vcd, int track)
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{
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if (!read_toc_entry(vcd, track))
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return -1;
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return VCD_SECTOR_DATA * vcd_get_msf(vcd);
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}
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static int
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vcd_get_track_end(mp_vcd_priv_t* vcd, int track)
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{
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if (!read_toc_entry(vcd,
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track < vcd->tochdr.ending_track ? track + 1 : CDROM_LEADOUT))
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return -1;
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return VCD_SECTOR_DATA * vcd_get_msf(vcd);
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}
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static mp_vcd_priv_t*
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vcd_read_toc(int fd)
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{
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struct ioc_toc_header tochdr;
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mp_vcd_priv_t* vcd;
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int i, last_startsect;
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if (ioctl(fd, CDIOREADTOCHEADER, &tochdr) == -1) {
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mp_msg(MSGT_OPEN,MSGL_ERR,"read CDROM toc header: %s\n",strerror(errno));
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return NULL;
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}
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n", tochdr.starting_track);
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n", tochdr.ending_track);
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vcd = malloc(sizeof(mp_vcd_priv_t));
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vcd->fd = fd;
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vcd->tochdr = tochdr;
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for (i = tochdr.starting_track; i <= tochdr.ending_track + 1; i++) {
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if (!read_toc_entry(vcd,
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i <= tochdr.ending_track ? i : CDROM_LEADOUT)) {
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free(vcd);
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return NULL;
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}
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if (i <= tochdr.ending_track)
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mp_msg(MSGT_OPEN,MSGL_INFO,"track %02d: adr=%d ctrl=%d format=%d %02d:%02d:%02d\n",
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#ifdef VCD_NETBSD
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(int)vcd->entry.starting_track,
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(int)vcd->entry.data->addr_type,
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(int)vcd->entry.data->control,
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#else
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(int)vcd->entry.track,
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(int)vcd->entry.entry.addr_type,
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(int)vcd->entry.entry.control,
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#endif
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(int)vcd->entry.address_format,
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(int)TOCADDR(vcd->entry).msf.minute,
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(int)TOCADDR(vcd->entry).msf.second,
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(int)TOCADDR(vcd->entry).msf.frame
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);
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if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
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{
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int startsect = vcd_get_msf(vcd);
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if (i > tochdr.starting_track)
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{
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// convert duraion to MSF
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vcd_set_msf(vcd, startsect - last_startsect);
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mp_msg(MSGT_IDENTIFY, MSGL_INFO,
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"ID_VCD_TRACK_%d_MSF=%02d:%02d:%02d\n",
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i - 1,
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TOCADDR(vcd->entry).msf.minute,
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TOCADDR(vcd->entry).msf.second,
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TOCADDR(vcd->entry).msf.frame);
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}
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last_startsect = startsect;
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}
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}
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return vcd;
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}
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static int
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vcd_read(mp_vcd_priv_t* vcd, char *mem)
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{
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#ifdef VCD_NETBSD
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struct scsireq sc;
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int lba = vcd_get_msf(vcd);
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int blocks;
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int rc;
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blocks = 1;
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memset(&sc, 0, sizeof(sc));
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sc.cmd[0] = 0xBE;
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sc.cmd[1] = 5 << 2; // mode2/form2
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AV_WB32(&sc.cmd[2], lba);
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AV_WB24(&sc.cmd[6], blocks);
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sc.cmd[9] = 1 << 4; // user data only
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sc.cmd[10] = 0; // no subchannel
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sc.cmdlen = 12;
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sc.databuf = (caddr_t) mem;
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sc.datalen = VCD_SECTOR_DATA;
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sc.senselen = sizeof(sc.sense);
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sc.flags = SCCMD_READ;
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sc.timeout = 10000;
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rc = ioctl(vcd->fd, SCIOCCOMMAND, &sc);
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if (rc == -1) {
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mp_msg(MSGT_STREAM,MSGL_ERR,"SCIOCCOMMAND: %s\n",strerror(errno));
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return -1;
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}
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if (sc.retsts || sc.error) {
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mp_msg(MSGT_STREAM,MSGL_ERR,"scsi command failed: status %d error %d\n",
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sc.retsts,sc.error);
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return -1;
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}
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#else
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if (pread(vcd->fd,&vcd->buf,VCD_SECTOR_SIZE,vcd_get_msf(vcd)*VCD_SECTOR_SIZE)
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!= VCD_SECTOR_SIZE) return 0; // EOF?
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memcpy(mem,vcd->buf.data,VCD_SECTOR_DATA);
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#endif
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vcd_inc_msf(vcd);
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return VCD_SECTOR_DATA;
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}
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#endif /* MPLAYER_VCD_READ_FBSD_H */
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