2 * This file is part of MPlayer.
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * MPlayer is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
25 #include <dvdread/ifo_types.h>
27 #include <sys/cdrio.h>
31 #include <linux/cdrom.h>
33 #include <sys/types.h>
35 #include <sys/ioctl.h>
40 #include "stream_dvd_common.h"
41 #include "ffmpeg_files/intreadwrite.h"
43 const char * const dvd_audio_stream_types
[8] = { "ac3","unknown","mpeg1","mpeg2ext","lpcm","unknown","dts" };
44 const char * const dvd_audio_stream_channels
[6] = { "mono", "stereo", "unknown", "unknown", "5.1/6.1", "5.1" };
46 int dvd_speed
=0; /* 0 => don't touch speed */
48 void dvd_set_speed(char *device
, unsigned speed
)
50 #if defined(__linux__) && defined(SG_IO) && defined(GPCMD_SET_STREAMING)
52 unsigned char buffer
[28];
53 unsigned char cmd
[12];
54 struct sg_io_hdr sghdr
;
57 memset(&st
, 0, sizeof(st
));
59 if (stat(device
, &st
) == -1) return;
61 if (!S_ISBLK(st
.st_mode
)) return; /* not a block device */
64 case 0: /* don't touch speed setting */
66 case -1: /* restore default value */
67 if (dvd_speed
== 0) return; /* we haven't touched the speed setting */
68 mp_tmsg(MSGT_OPEN
, MSGL_INFO
, "Restoring DVD speed... ");
70 default: /* limit to <speed> KB/s */
71 // speed < 100 is multiple of DVD single speed (1350KB/s)
74 mp_tmsg(MSGT_OPEN
, MSGL_INFO
, "Limiting DVD speed to %dKB/s... ", speed
);
78 memset(&sghdr
, 0, sizeof(sghdr
));
79 sghdr
.interface_id
= 'S';
81 sghdr
.dxfer_direction
= SG_DXFER_TO_DEV
;
82 sghdr
.dxfer_len
= sizeof(buffer
);
83 sghdr
.dxferp
= buffer
;
84 sghdr
.cmd_len
= sizeof(cmd
);
87 memset(cmd
, 0, sizeof(cmd
));
88 cmd
[0] = GPCMD_SET_STREAMING
;
89 cmd
[10] = sizeof(buffer
);
91 memset(buffer
, 0, sizeof(buffer
));
92 /* first sector 0, last sector 0xffffffff */
93 AV_WB32(buffer
+ 8, 0xffffffff);
95 buffer
[0] = 4; /* restore default */
97 /* <speed> kilobyte */
98 AV_WB32(buffer
+ 12, speed
);
99 AV_WB32(buffer
+ 20, speed
);
102 AV_WB16(buffer
+ 18, 1000);
103 AV_WB16(buffer
+ 26, 1000);
105 fd
= open(device
, O_RDWR
| O_NONBLOCK
);
107 mp_tmsg(MSGT_OPEN
, MSGL_INFO
, "Couldn't open DVD device for writing, changing DVD speed needs write access.\n");
111 if (ioctl(fd
, SG_IO
, &sghdr
) < 0)
112 mp_tmsg(MSGT_OPEN
, MSGL_INFO
, "failed\n");
114 mp_tmsg(MSGT_OPEN
, MSGL_INFO
, "successful\n");
121 \brief Converts DVD time structure to milliseconds.
122 \param *dev the DVD time structure to convert
123 \return returns the time in milliseconds
125 int mp_dvdtimetomsec(dvd_time_t
*dt
)
127 static int framerates
[4] = {0, 2500, 0, 2997};
128 int framerate
= framerates
[(dt
->frame_u
& 0xc0) >> 6];
129 int msec
= (((dt
->hour
& 0xf0) >> 3) * 5 + (dt
->hour
& 0x0f)) * 3600000;
130 msec
+= (((dt
->minute
& 0xf0) >> 3) * 5 + (dt
->minute
& 0x0f)) * 60000;
131 msec
+= (((dt
->second
& 0xf0) >> 3) * 5 + (dt
->second
& 0x0f)) * 1000;
133 msec
+= (((dt
->frame_u
& 0x30) >> 3) * 5 + (dt
->frame_u
& 0x0f)) * 100000 / framerate
;