mirror of https://github.com/mpv-player/mpv
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
#include "config.h"
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#include <fcntl.h>
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#include <inttypes.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <dvdread/ifo_types.h>
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#ifdef __FreeBSD__
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#include <sys/cdrio.h>
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#endif
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#ifdef __linux__
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#include <linux/cdrom.h>
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#include <scsi/sg.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#endif
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#include "mp_msg.h"
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#include "help_mp.h"
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#include "stream_dvd_common.h"
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#include "libavutil/intreadwrite.h"
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const char * const dvd_audio_stream_types[8] = { "ac3","unknown","mpeg1","mpeg2ext","lpcm","unknown","dts" };
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const char * const dvd_audio_stream_channels[6] = { "mono", "stereo", "unknown", "unknown", "5.1/6.1", "5.1" };
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int dvd_speed=0; /* 0 => don't touch speed */
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void dvd_set_speed(char *device, unsigned speed)
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{
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#if defined(__linux__) && defined(SG_IO) && defined(GPCMD_SET_STREAMING)
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int fd;
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unsigned char buffer[28];
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unsigned char cmd[12];
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struct sg_io_hdr sghdr;
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struct stat st;
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memset(&st, 0, sizeof(st));
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if (stat(device, &st) == -1) return;
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if (!S_ISBLK(st.st_mode)) return; /* not a block device */
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switch (speed) {
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case 0: /* don't touch speed setting */
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return;
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case -1: /* restore default value */
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if (dvd_speed == 0) return; /* we haven't touched the speed setting */
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mp_msg(MSGT_OPEN, MSGL_INFO, MSGTR_DVDrestoreSpeed);
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break;
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default: /* limit to <speed> KB/s */
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// speed < 100 is multiple of DVD single speed (1350KB/s)
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if (speed < 100)
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speed *= 1350;
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mp_msg(MSGT_OPEN, MSGL_INFO, MSGTR_DVDlimitSpeed, speed);
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break;
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}
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memset(&sghdr, 0, sizeof(sghdr));
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sghdr.interface_id = 'S';
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sghdr.timeout = 5000;
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sghdr.dxfer_direction = SG_DXFER_TO_DEV;
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sghdr.dxfer_len = sizeof(buffer);
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sghdr.dxferp = buffer;
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sghdr.cmd_len = sizeof(cmd);
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sghdr.cmdp = cmd;
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memset(cmd, 0, sizeof(cmd));
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cmd[0] = GPCMD_SET_STREAMING;
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cmd[10] = sizeof(buffer);
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memset(buffer, 0, sizeof(buffer));
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/* first sector 0, last sector 0xffffffff */
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AV_WB32(buffer + 8, 0xffffffff);
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if (speed == -1)
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buffer[0] = 4; /* restore default */
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else {
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/* <speed> kilobyte */
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AV_WB32(buffer + 12, speed);
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AV_WB32(buffer + 20, speed);
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}
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/* 1 second */
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AV_WB16(buffer + 18, 1000);
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AV_WB16(buffer + 26, 1000);
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fd = open(device, O_RDWR | O_NONBLOCK);
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if (fd == -1) {
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mp_msg(MSGT_OPEN, MSGL_INFO, MSGTR_DVDspeedCantOpen);
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return;
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}
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if (ioctl(fd, SG_IO, &sghdr) < 0)
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mp_msg(MSGT_OPEN, MSGL_INFO, MSGTR_DVDlimitFail);
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else
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mp_msg(MSGT_OPEN, MSGL_INFO, MSGTR_DVDlimitOk);
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close(fd);
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#endif
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}
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/**
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\brief Converts DVD time structure to milliseconds.
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\param *dev the DVD time structure to convert
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\return returns the time in milliseconds
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*/
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int mp_dvdtimetomsec(dvd_time_t *dt)
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{
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static int framerates[4] = {0, 2500, 0, 2997};
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int framerate = framerates[(dt->frame_u & 0xc0) >> 6];
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int msec = (((dt->hour & 0xf0) >> 3) * 5 + (dt->hour & 0x0f)) * 3600000;
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msec += (((dt->minute & 0xf0) >> 3) * 5 + (dt->minute & 0x0f)) * 60000;
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msec += (((dt->second & 0xf0) >> 3) * 5 + (dt->second & 0x0f)) * 1000;
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if(framerate > 0)
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msec += (((dt->frame_u & 0x30) >> 3) * 5 + (dt->frame_u & 0x0f)) * 100000 / framerate;
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return msec;
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}
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