mirror of
https://github.com/mpv-player/mpv
synced 2024-12-13 02:15:59 +00:00
30d0116d16
Björn Sandell <biorn@dce.chalmers.se> Marcus <core@antbear.org> Bernd Ernesti <mplayer@lists.veego.de> git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@5873 b3059339-0415-0410-9bf9-f77b7e298cf2
199 lines
5.0 KiB
C
199 lines
5.0 KiB
C
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#include <sys/types.h>
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#include <sys/inttypes.h>
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#include <sys/cdio.h>
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#include <sys/scsiio.h>
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#define CDROM_LEADOUT 0xAA
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static struct ioc_read_toc_entry vcd_entry;
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static struct cd_toc_entry vcd_entry_data;
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static char vcd_buf[VCD_SECTOR_SIZE];
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static inline void
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vcd_set_msf(unsigned int sect)
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{
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unsigned int s = sect;
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vcd_entry_data.addr.msf.frame = sect % 75;
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sect = sect / 75;
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vcd_entry_data.addr.msf.second = sect % 60;
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sect = sect / 60;
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vcd_entry_data.addr.msf.minute = sect;
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}
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static inline unsigned int
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vcd_get_msf()
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{
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return vcd_entry_data.addr.msf.frame +
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(vcd_entry_data.addr.msf.second +
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vcd_entry_data.addr.msf.minute * 60) * 75;
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}
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int
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vcd_seek_to_track(int fd, int track)
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{
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vcd_entry.address_format = CD_MSF_FORMAT;
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vcd_entry.starting_track = track;
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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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if (ioctl(fd, CDIOREADTOCENTRIES, &vcd_entry)) {
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perror("ioctl dif1");
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return -1;
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}
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return VCD_SECTOR_DATA * vcd_get_msf();
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}
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int
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vcd_get_track_end(int fd, int track)
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{
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struct ioc_toc_header tochdr;
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if (ioctl(fd, CDIOREADTOCHEADER, &tochdr) == -1) {
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perror("read CDROM toc header: ");
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return -1;
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}
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vcd_entry.address_format = CD_MSF_FORMAT;
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vcd_entry.starting_track = track < tochdr.ending_track ? (track + 1) : CDROM_LEADOUT;
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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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if (ioctl(fd, CDIOREADTOCENTRYS, &vcd_entry)) {
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perror("ioctl dif2");
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return -1;
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}
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return VCD_SECTOR_DATA * vcd_get_msf();
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}
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void
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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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int i;
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if (ioctl(fd, CDIOREADTOCHEADER, &tochdr) == -1) {
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perror("read CDROM toc header: ");
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return;
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}
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for (i = tochdr.starting_track; i <= tochdr.ending_track; i++) {
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struct ioc_read_toc_entry tocentry;
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struct cd_toc_entry tocentry_data;
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tocentry.starting_track = i;
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tocentry.address_format = CD_MSF_FORMAT;
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tocentry.data_len = sizeof(struct cd_toc_entry);
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tocentry.data = &tocentry_data;
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if (ioctl(fd, CDIOREADTOCENTRYS, &tocentry) == -1) {
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perror("read CDROM toc entry: ");
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return;
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}
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printf("track %02d: adr=%d ctrl=%d format=%d %02d:%02d:%02d\n",
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(int) tocentry.starting_track,
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(int) tocentry.data->addr_type,
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(int) tocentry.data->control,
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(int) tocentry.address_format,
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(int) tocentry.data->addr.msf.minute,
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(int) tocentry.data->addr.msf.second,
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(int) tocentry.data->addr.msf.frame
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);
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}
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}
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static int
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vcd_read(int fd, char *mem)
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{
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struct scsireq sc;
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int lba = vcd_get_msf();
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int blocks;
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int sector_type;
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int sync, header_code, user_data, edc_ecc, error_field;
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int sub_channel;
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int rc;
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blocks = 1;
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sector_type = 5; /* mode2/form2 */
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sync = 0;
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header_code = 0;
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user_data = 1;
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edc_ecc = 0;
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error_field = 0;
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sub_channel = 0;
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memset(&sc, 0, sizeof(sc));
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sc.cmd[0] = 0xBE;
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sc.cmd[1] = (sector_type) << 2;
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sc.cmd[2] = (lba >> 24) & 0xff;
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sc.cmd[3] = (lba >> 16) & 0xff;
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sc.cmd[4] = (lba >> 8) & 0xff;
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sc.cmd[5] = lba & 0xff;
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sc.cmd[6] = (blocks >> 16) & 0xff;
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sc.cmd[7] = (blocks >> 8) & 0xff;
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sc.cmd[8] = blocks & 0xff;
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sc.cmd[9] = (sync << 7) | (header_code << 5) | (user_data << 4) |
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(edc_ecc << 3) | (error_field << 1);
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sc.cmd[10] = sub_channel;
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sc.cmdlen = 12;
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sc.databuf = (caddr_t) mem;
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sc.datalen = 2328;
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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(fd, SCIOCCOMMAND, &sc);
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if (rc == -1) {
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perror("SCIOCCOMMAND");
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return -1;
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}
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if (sc.retsts || sc.error) {
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fprintf(stderr, "scsi command failed: status %d error %d\n", sc.retsts,
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sc.error);
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return -1;
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}
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return VCD_SECTOR_DATA;
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}
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#ifdef VCD_CACHE
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static int vcd_cache_size = 0;
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static char *vcd_cache_data = NULL;
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static int *vcd_cache_sectors = NULL;
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static int vcd_cache_index = 0;
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static int vcd_cache_current = -1;
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void
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vcd_cache_init(int s)
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{
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vcd_cache_size = s;
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vcd_cache_sectors = malloc(s * sizeof(int));
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vcd_cache_data = malloc(s * VCD_SECTOR_SIZE);
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memset(vcd_cache_sectors, 255, s * sizeof(int));
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}
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static inline void
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vcd_cache_seek(int sect)
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{
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vcd_cache_current = sect;
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}
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int
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vcd_cache_read(int fd, char *mem)
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{
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int i;
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char *vcd_buf;
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for (i = 0; i < vcd_cache_size; i++)
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if (vcd_cache_sectors[i] == vcd_cache_current) {
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vcd_buf = &vcd_cache_data[i * VCD_SECTOR_SIZE];
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++vcd_cache_current;
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memcpy(mem, &vcd_buf[VCD_SECTOR_OFFS], VCD_SECTOR_DATA);
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return VCD_SECTOR_DATA;
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}
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vcd_buf = &vcd_cache_data[vcd_cache_index * VCD_SECTOR_SIZE];
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vcd_cache_sectors[vcd_cache_index] = vcd_cache_current;
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++vcd_cache_index;
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if (vcd_cache_index >= vcd_cache_size)
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vcd_cache_index = 0;
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vcd_set_msf(vcd_cache_current);
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memcpy(vcd_buf, &vcd_entry_data.addr.msf, sizeof(vcd_entry_data.addr.msf));
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++vcd_cache_current;
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memcpy(mem, &vcd_buf[VCD_SECTOR_OFFS], VCD_SECTOR_DATA);
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return VCD_SECTOR_DATA;
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}
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#endif
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