mirror of
https://github.com/mpv-player/mpv
synced 2024-12-27 09:32:40 +00:00
132 lines
3.8 KiB
C
132 lines
3.8 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_WIN32_H
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#define MPLAYER_VCD_READ_WIN32_H
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ntddcdrm.h>
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#include "common/msg.h"
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typedef struct mp_vcd_priv_st mp_vcd_priv_t;
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/*
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Unlike Unices, upon reading TOC, Windows will retrieve information for
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all tracks, so we don't need to call DeviceIoControl() in functions
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like vcd_seek_to_track() and vcd_get_track_end() for each track. Instead
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we cache the information in mp_vcd_priv_st.
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*/
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struct mp_vcd_priv_st {
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HANDLE hd;
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CDROM_TOC toc;
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unsigned sect;
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char buf[VCD_SECTOR_SIZE];
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};
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static inline void vcd_set_msf(mp_vcd_priv_t* vcd, unsigned sect)
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{
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vcd->sect = sect;
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}
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static inline unsigned vcd_get_msf(mp_vcd_priv_t* vcd, int track){
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int index = track - vcd->toc.FirstTrack;
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/* -150 to compensate the 2-second pregap */
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return vcd->toc.TrackData[index].Address[3] +
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(vcd->toc.TrackData[index].Address[2] +
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vcd->toc.TrackData[index].Address[1] * 60) * 75 - 150;
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}
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static int vcd_seek_to_track(mp_vcd_priv_t* vcd, int track)
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{
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unsigned sect;
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if (track < vcd->toc.FirstTrack || track > vcd->toc.LastTrack)
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return -1;
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sect = vcd_get_msf(vcd, track);
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vcd_set_msf(vcd, sect);
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return VCD_SECTOR_DATA * (sect + 2);
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}
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static int vcd_get_track_end(mp_vcd_priv_t* vcd, int track)
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{
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if (track < vcd->toc.FirstTrack || track > vcd->toc.LastTrack)
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return -1;
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return VCD_SECTOR_DATA * (vcd_get_msf(vcd, track + 1));
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}
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static mp_vcd_priv_t* vcd_read_toc(stream_t *stream, int fd)
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{
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DWORD dwBytesReturned;
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HANDLE hd;
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int i;
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mp_vcd_priv_t* vcd = malloc(sizeof(mp_vcd_priv_t));
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if (!vcd)
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return NULL;
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hd = (HANDLE)_get_osfhandle(fd);
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if (!DeviceIoControl(hd, IOCTL_CDROM_READ_TOC, NULL, 0, &vcd->toc,
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sizeof(CDROM_TOC), &dwBytesReturned, NULL)) {
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MP_ERR(stream, "read CDROM toc header: %lu\n",
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GetLastError());
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free(vcd);
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return NULL;
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}
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for (i = vcd->toc.FirstTrack; i <= vcd->toc.LastTrack + 1; i++) {
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int index = i - vcd->toc.FirstTrack;
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if (i <= vcd->toc.LastTrack) {
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MP_INFO(stream, "track %02d: adr=%d ctrl=%d"
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" %02d:%02d:%02d\n",
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vcd->toc.TrackData[index].TrackNumber,
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vcd->toc.TrackData[index].Adr,
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vcd->toc.TrackData[index].Control,
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vcd->toc.TrackData[index].Address[1],
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vcd->toc.TrackData[index].Address[2],
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vcd->toc.TrackData[index].Address[3]);
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}
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}
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vcd->hd = hd;
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return vcd;
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}
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#define vcd_close(priv) (CloseHandle(((mp_vcd_priv_t*)priv)->hd))
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static int vcd_read(mp_vcd_priv_t* vcd, char *mem)
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{
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DWORD dwBytesReturned;
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RAW_READ_INFO cdrom_raw;
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/* 2048 isn't a typo: it's the Windows way. */
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cdrom_raw.DiskOffset.QuadPart = (long long)(2048 * vcd->sect);
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cdrom_raw.SectorCount = 1;
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cdrom_raw.TrackMode = XAForm2;
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if (!DeviceIoControl(vcd->hd, IOCTL_CDROM_RAW_READ, &cdrom_raw,
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sizeof(RAW_READ_INFO), vcd->buf, sizeof(vcd->buf),
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&dwBytesReturned, NULL))
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return 0;
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vcd->sect++;
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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 /* MPLAYER_VCD_READ_WIN32_H */
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