mirror of
https://github.com/mpv-player/mpv
synced 2024-12-23 23:32:26 +00:00
2314032a33
split up into the following commits r22523, r22524, r22526 git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22526 b3059339-0415-0410-9bf9-f77b7e298cf2
131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
#include <ddk/ntddcdrm.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 - 1;
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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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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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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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mp_vcd_priv_t* vcd_read_toc(int fd)
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{
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DWORD dwBytesReturned;
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HANDLE hd;
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int i, min = 0, sec = 0, frame = 0;
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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_msg(MSGT_OPEN, MSGL_ERR, "read CDROM toc header: %u\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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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_START_TRACK=%d\n",
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vcd->toc.FirstTrack);
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_END_TRACK=%d\n",
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vcd->toc.LastTrack);
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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_msg(MSGT_OPEN, MSGL_INFO, "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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if (mp_msg_test(MSGT_IDENTIFY, MSGL_INFO)) {
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if (i > vcd->toc.FirstTrack) {
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min = vcd->toc.TrackData[index].Address[1] - min;
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if (frame < 0) {
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frame += 75;
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sec--;
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}
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if (sec < 0) {
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sec += 60;
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min--;
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}
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mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VCD_TRACK_%d_MSF="
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"%02d:%02d:%02d\n", i - 1, min, sec, frame);
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min = vcd->toc.TrackData[index].Address[1];
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sec = vcd->toc.TrackData[index].Address[2];
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frame = vcd->toc.TrackData[index].Address[3];
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}
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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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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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/*
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vim:noet:sw=4:cino=\:0,g0
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*/
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