mirror of https://github.com/mpv-player/mpv
261 lines
6.9 KiB
C
261 lines
6.9 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 "config.h"
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#if defined(__MINGW32__) || defined(__CYGWIN__)
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#include <windows.h>
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#endif
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#include "osdep/osdep.h"
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#include "mp_msg.h"
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#include "stream.h"
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#include "m_option.h"
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#include "m_struct.h"
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#if !defined(__MINGW32__) && !defined(__CYGWIN__)
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#include <sys/ioctl.h>
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#endif
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#include <errno.h>
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#include "talloc.h"
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__OpenBSD__)
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#include "vcd_read_fbsd.h"
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#elif defined(__APPLE__)
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#include "vcd_read_darwin.h"
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#elif defined(__MINGW32__) || defined(__CYGWIN__)
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#include "vcd_read_win32.h"
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#elif defined(__OS2__)
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#include "vcd_read_os2.h"
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#else
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#include "vcd_read.h"
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#endif
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#include "libmpdemux/demuxer.h"
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extern char *cdrom_device;
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static struct stream_priv_s {
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int track;
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char* device;
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} stream_priv_dflts = {
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1,
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NULL
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};
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#define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
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/// URL definition
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static const m_option_t stream_opts_fields[] = {
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{ "track", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
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{ "device", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
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/// For url parsing
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{ "hostname", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
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{ "filename", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
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{ NULL, NULL, 0, 0, 0, 0, NULL }
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};
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static const struct m_struct_st stream_opts = {
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"vcd",
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sizeof(struct stream_priv_s),
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&stream_priv_dflts,
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stream_opts_fields
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};
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static int fill_buffer(stream_t *s, char* buffer, int max_len){
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if(s->pos > s->end_pos) /// don't past end of current track
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return 0;
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return vcd_read(s->priv,buffer);
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}
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static int seek(stream_t *s,off_t newpos) {
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s->pos = newpos;
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vcd_set_msf(s->priv,s->pos/VCD_SECTOR_DATA);
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return 1;
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}
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static int control(stream_t *stream, int cmd, void *arg) {
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struct stream_priv_s *p = stream->priv;
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switch(cmd) {
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case STREAM_CTRL_GET_NUM_CHAPTERS:
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{
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mp_vcd_priv_t *vcd = vcd_read_toc(stream->fd);
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if (!vcd)
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break;
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*(unsigned int *)arg = vcd_end_track(vcd);
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return STREAM_OK;
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}
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case STREAM_CTRL_SEEK_TO_CHAPTER:
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{
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int r;
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unsigned int track = *(unsigned int *)arg + 1;
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mp_vcd_priv_t *vcd = vcd_read_toc(stream->fd);
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if (!vcd)
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break;
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r = vcd_seek_to_track(vcd, track);
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if (r >= 0) {
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p->track = track;
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return STREAM_OK;
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}
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break;
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}
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case STREAM_CTRL_GET_CURRENT_CHAPTER:
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{
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*(unsigned int *)arg = p->track - 1;
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return STREAM_OK;
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}
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}
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return STREAM_UNSUPPORTED;
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}
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static void close_s(stream_t *stream) {
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free(stream->priv);
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}
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static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
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struct stream_priv_s* p = opts;
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int ret,ret2,f,sect,tmp;
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mp_vcd_priv_t* vcd;
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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int bsize = VCD_SECTOR_SIZE;
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#endif
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#if defined(__MINGW32__) || defined(__CYGWIN__)
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HANDLE hd;
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char device[] = "\\\\.\\?:";
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#endif
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#if defined(__OS2__)
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char device[] = "X:";
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HFILE hcd;
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ULONG ulAction;
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ULONG rc;
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#endif
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if(mode != STREAM_READ
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#if defined(__MINGW32__) || defined(__CYGWIN__)
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|| GetVersion() > 0x80000000 // Win9x
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#endif
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) {
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m_struct_free(&stream_opts,opts);
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return STREAM_UNSUPPORTED;
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}
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if (!p->device) {
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if(cdrom_device)
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p->device = talloc_strdup(NULL, cdrom_device);
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else
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p->device = talloc_strdup(NULL, DEFAULT_CDROM_DEVICE);
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}
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#if defined(__MINGW32__) || defined(__CYGWIN__)
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device[4] = p->device[0];
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/* open() can't be used for devices so do it the complicated way */
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hd = CreateFile(device, GENERIC_READ, FILE_SHARE_READ, NULL,
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OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN, NULL);
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f = _open_osfhandle((long)hd, _O_RDONLY);
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#elif defined(__OS2__)
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device[0] = p->device[0];
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rc = DosOpen(device, &hcd, &ulAction, 0, FILE_NORMAL,
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OPEN_ACTION_OPEN_IF_EXISTS | OPEN_ACTION_FAIL_IF_NEW,
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OPEN_ACCESS_READONLY | OPEN_SHARE_DENYNONE | OPEN_FLAGS_DASD,
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NULL);
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f = rc ? -1 : hcd;
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#else
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f=open(p->device,O_RDONLY);
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#endif
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if(f<0){
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mp_tmsg(MSGT_OPEN,MSGL_ERR,"CD-ROM Device '%s' not found.\n",p->device);
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m_struct_free(&stream_opts,opts);
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return STREAM_ERROR;
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}
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vcd = vcd_read_toc(f);
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if(!vcd) {
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mp_msg(MSGT_OPEN,MSGL_ERR,"Failed to get cd toc\n");
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close(f);
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m_struct_free(&stream_opts,opts);
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return STREAM_ERROR;
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}
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ret2=vcd_get_track_end(vcd,p->track);
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if(ret2<0){
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mp_msg(MSGT_OPEN, MSGL_ERR, "%s (get)\n",
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mp_gtext("Error selecting VCD track."));
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close(f);
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free(vcd);
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m_struct_free(&stream_opts,opts);
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return STREAM_ERROR;
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}
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ret=vcd_seek_to_track(vcd,p->track);
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if(ret<0){
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mp_msg(MSGT_OPEN, MSGL_ERR, "%s (seek)\n",
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mp_gtext("Error selecting VCD track."));
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close(f);
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free(vcd);
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m_struct_free(&stream_opts,opts);
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return STREAM_ERROR;
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}
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/* search forward up to at most 3 seconds to skip leading margin */
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sect = ret / VCD_SECTOR_DATA;
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for (tmp = sect; tmp < sect + 3 * 75; tmp++) {
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char mem[VCD_SECTOR_DATA];
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//since MPEG packs are block-aligned we stop discarding sectors if they are non-null
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if (vcd_read(vcd, mem) != VCD_SECTOR_DATA || mem[2] || mem[3])
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break;
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}
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mp_msg(MSGT_OPEN, MSGL_DBG2, "%d leading sectors skipped\n", tmp - sect);
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vcd_set_msf(vcd, tmp);
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ret = tmp * VCD_SECTOR_DATA;
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mp_msg(MSGT_OPEN,MSGL_V,"VCD start byte position: 0x%X end: 0x%X\n",ret,ret2);
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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if (ioctl (f, CDRIOCSETBLOCKSIZE, &bsize) == -1) {
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mp_msg(MSGT_OPEN,MSGL_WARN,"Error in CDRIOCSETBLOCKSIZE");
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}
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#endif
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stream->fd = f;
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stream->type = STREAMTYPE_VCD;
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stream->sector_size = VCD_SECTOR_DATA;
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stream->start_pos=ret;
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stream->end_pos=ret2;
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stream->priv = vcd;
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stream->fill_buffer = fill_buffer;
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stream->seek = seek;
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stream->control = control;
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stream->close = close_s;
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*file_format = DEMUXER_TYPE_MPEG_PS;
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m_struct_free(&stream_opts,opts);
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return STREAM_OK;
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}
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const stream_info_t stream_info_vcd = {
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"Video CD",
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"vcd",
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"Albeu",
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"based on the code from ???",
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open_s,
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{ "vcd", NULL },
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&stream_opts,
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1 // Urls are an option string
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};
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