mirror of
https://github.com/mpv-player/mpv
synced 2024-12-22 23:02:37 +00:00
fc6a9e4a3e
Remove the private bswap and intreadwrite.h implementations and use libavutil headers instead. Originally these headers weren't publicly installed by libavutil at all. That already changed in 2010, but the pure C bswap version in installed headers was very inefficient. That was recently (2011-12) improved and now using the public bswap version probably shouldn't cause noticeable performance problems, at least if using a new enough compiler.
138 lines
3.9 KiB
C
138 lines
3.9 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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#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 <libavutil/intreadwrite.h>
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#include "config.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 "stream_dvd_common.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_tmsg(MSGT_OPEN, MSGL_INFO, "Restoring DVD speed... ");
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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_tmsg(MSGT_OPEN, MSGL_INFO, "Limiting DVD speed to %dKB/s... ", 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_tmsg(MSGT_OPEN, MSGL_INFO, "Couldn't open DVD device for writing, changing DVD speed needs write access.\n");
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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_tmsg(MSGT_OPEN, MSGL_INFO, "failed\n");
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else
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mp_tmsg(MSGT_OPEN, MSGL_INFO, "successful\n");
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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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