libmpdemux/stream_vcd.c

   1
   2 #include "config.h"
   3
   4 #ifdef HAVE_VCD
   5 #include "mp_msg.h"
   6 #include "stream.h"
   7 #include "help_mp.h"
   8 #include "m_option.h"
   9 #include "m_struct.h"
  10
  11 #include <fcntl.h>
  12 #include <stdlib.h>
  13 #include <unistd.h>
  14 #include <sys/ioctl.h>
  15 #include <errno.h>
  16
  17 #if defined(__FreeBSD__) || defined(__DragonFly__)
  18 #include <sys/cdrio.h>
  19 #include "vcd_read_fbsd.h"
  20 #elif defined(__NetBSD__) || defined (__OpenBSD__)
  21 #include "vcd_read_nbsd.h"
  22 #elif defined(SYS_DARWIN)
  23 #include "vcd_read_darwin.h"
  24 #else
  25 #include "vcd_read.h"
  26 #endif
  27
  28 extern char *cdrom_device;
  29
  30 static struct stream_priv_s {
  31   int track;
  32   char* device;
  33 } stream_priv_dflts = {
  34   1,
  35   NULL
  36 };
  37
  38 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  39 /// URL definition
  40 static m_option_t stream_opts_fields[] = {
  41   { "track", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
  42   { "device", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  43   /// For url parsing
  44   { "hostname", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
  45   { "filename", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  46   { NULL, NULL, 0, 0, 0, 0,  NULL }
  47 };
  48 static struct m_struct_st stream_opts = {
  49   "vcd",
  50   sizeof(struct stream_priv_s),
  51   &stream_priv_dflts,
  52   stream_opts_fields
  53 };
  54
  55 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  56   if(s->pos > s->end_pos) /// don't past end of current track
  57     return 0;
  58   return vcd_read(s->priv,buffer);
  59 }
  60
  61 static int seek(stream_t *s,off_t newpos) {
  62   s->pos = newpos;
  63   vcd_set_msf(s->priv,s->pos/VCD_SECTOR_DATA);
  64   return 1;
  65 }
  66
  67 static void close_s(stream_t *stream) {
  68   free(stream->priv);
  69 }
  70
  71 static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
  72   struct stream_priv_s* p = (struct stream_priv_s*)opts;
  73   int ret,ret2,f;
  74   mp_vcd_priv_t* vcd;
  75 #ifdef __FreeBSD__
  76   int bsize = VCD_SECTOR_SIZE;
  77 #endif
  78
  79   if(mode != STREAM_READ) {
  80     m_struct_free(&stream_opts,opts);
  81     return STREAM_UNSUPORTED;
  82   }
  83
  84   if (!p->device) {
  85     if(cdrom_device)
  86       p->device = strdup(cdrom_device);
  87     else
  88       p->device = strdup(DEFAULT_CDROM_DEVICE);
  89   }
  90
  91   f=open(p->device,O_RDONLY);
  92   if(f<0){
  93     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_CdDevNotfound,p->device);
  94     m_struct_free(&stream_opts,opts);
  95     return STREAM_ERROR;
  96   }
  97
  98   vcd = vcd_read_toc(f);
  99   if(!vcd) {
 100     mp_msg(MSGT_OPEN,MSGL_ERR,"Failed to get cd toc\n");
 101     close(f);
 102     m_struct_free(&stream_opts,opts);
 103     return STREAM_ERROR;
 104   }
 105   ret2=vcd_get_track_end(vcd,p->track);
 106   if(ret2<0){
 107     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_ErrTrackSelect " (get)\n");
 108     close(f);
 109     free(vcd);
 110     m_struct_free(&stream_opts,opts);
 111     return STREAM_ERROR;
 112   }
 113   ret=vcd_seek_to_track(vcd,p->track);
 114   if(ret<0){
 115     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_ErrTrackSelect " (seek)\n");
 116     close(f);
 117     free(vcd);
 118     m_struct_free(&stream_opts,opts);
 119     return STREAM_ERROR;
 120   }
 121   mp_msg(MSGT_OPEN,MSGL_V,"VCD start byte position: 0x%X  end: 0x%X\n",ret,ret2);
 122
 123 #ifdef __FreeBSD__
 124   if (ioctl (f, CDRIOCSETBLOCKSIZE, &bsize) == -1) {
 125     mp_msg(MSGT_OPEN,MSGL_WARN,"Error in CDRIOCSETBLOCKSIZE");
 126   }
 127 #endif
 128
 129   stream->fd = f;
 130   stream->type = STREAMTYPE_VCD;
 131   stream->sector_size = VCD_SECTOR_DATA;
 132   stream->start_pos=ret;
 133   stream->end_pos=ret2;
 134   stream->priv = vcd;
 135
 136   stream->fill_buffer = fill_buffer;
 137   stream->seek = seek;
 138   stream->close = close_s;
 139
 140   m_struct_free(&stream_opts,opts);
 141   return STREAM_OK;
 142 }
 143
 144 stream_info_t stream_info_vcd = {
 145   "Video CD",
 146   "vcd",
 147   "Albeu",
 148   "based on the code from ???",
 149   open_s,
 150   { "vcd", NULL },
 151   &stream_opts,
 152   1 // Urls are an option string
 153 };
 154
 155 #endif