stream/stream_vcd.c

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