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