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 #ifdef __FreeBSD__
  18 #include <sys/cdrio.h>
  19 #include "vcd_read_fbsd.h"
  20 #elif defined(__NetBSD__)
  21 #include "vcd_read_nbsd.h"
  22 #else
  23 #include "vcd_read.h"
  24 #endif
  25
  26 extern char *cdrom_device;
  27
  28 static struct stream_priv_s {
  29   int track;
  30   char* device;
  31 } stream_priv_dflts = {
  32   1,
  33   NULL
  34 };
  35
  36 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  37 /// URL definition
  38 static m_option_t stream_opts_fields[] = {
  39   { "track", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
  40   { "device", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  41   /// For url parsing
  42   { "hostname", ST_OFF(track), CONF_TYPE_INT, M_OPT_MIN, 1, 0, NULL },
  43   { "filename", ST_OFF(device), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  44   { NULL, NULL, 0, 0, 0, 0,  NULL }
  45 };
  46 static struct m_struct_st stream_opts = {
  47   "vcd",
  48   sizeof(struct stream_priv_s),
  49   &stream_priv_dflts,
  50   stream_opts_fields
  51 };
  52
  53 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  54   return vcd_read(s->priv,buffer);
  55 }
  56
  57 static int seek(stream_t *s,off_t newpos) {
  58   s->pos = newpos;
  59   vcd_set_msf(s->priv,s->pos/VCD_SECTOR_DATA);
  60   return 1;
  61 }
  62
  63 static void close_s(stream_t *stream) {
  64   free(stream->priv);
  65 }
  66
  67 static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
  68   struct stream_priv_s* p = (struct stream_priv_s*)opts;
  69   int ret,ret2,f;
  70   mp_vcd_priv_t* vcd;
  71 #ifdef __FreeBSD__
  72   int bsize = VCD_SECTOR_SIZE;
  73 #endif
  74
  75   if(mode != STREAM_READ) {
  76     m_struct_free(&stream_opts,opts);
  77     return STREAM_UNSUPORTED;
  78   }
  79
  80   if (!p->device) {
  81     if(cdrom_device)
  82       p->device = strdup(cdrom_device);
  83     else
  84       p->device = strdup(DEFAULT_CDROM_DEVICE);
  85   }
  86
  87   f=open(p->device,O_RDONLY);
  88   if(f<0){
  89     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_CdDevNotfound,p->device);
  90     close(f);
  91     m_struct_free(&stream_opts,opts);
  92     return STREAM_ERROR;
  93   }
  94
  95   vcd = vcd_read_toc(f);
  96   if(!vcd) {
  97     mp_msg(MSGT_OPEN,MSGL_ERR,"Failed to get cd toc\n");
  98     close(f);
  99     m_struct_free(&stream_opts,opts);
 100     return STREAM_ERROR;
 101   }
 102   ret2=vcd_get_track_end(vcd,p->track);
 103   if(ret2<0){
 104     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_ErrTrackSelect " (get)\n");
 105     close(f);
 106     free(vcd);
 107     m_struct_free(&stream_opts,opts);
 108     return STREAM_ERROR;
 109   }
 110   ret=vcd_seek_to_track(vcd,p->track);
 111   if(ret<0){
 112     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_ErrTrackSelect " (seek)\n");
 113     close(f);
 114     free(vcd);
 115     m_struct_free(&stream_opts,opts);
 116     return STREAM_ERROR;
 117   }
 118   mp_msg(MSGT_OPEN,MSGL_V,"VCD start byte position: 0x%X  end: 0x%X\n",ret,ret2);
 119
 120 #ifdef __FreeBSD__
 121   if (ioctl (f, CDRIOCSETBLOCKSIZE, &bsize) == -1) {
 122     mp_msg(MSGT_OPEN,MSGL_WARN,"Error in CDRIOCSETBLOCKSIZE");
 123   }
 124 #endif
 125
 126   stream->fd = f;
 127   stream->type = STREAMTYPE_VCD;
 128   stream->sector_size = VCD_SECTOR_DATA;
 129   stream->start_pos=ret;
 130   stream->end_pos=ret2;
 131   stream->priv = vcd;
 132
 133   stream->fill_buffer = fill_buffer;
 134   stream->seek = seek;
 135   stream->close = close_s;
 136
 137   m_struct_free(&stream_opts,opts);
 138   return STREAM_OK;
 139 }
 140
 141 stream_info_t stream_info_vcd = {
 142   "Video CD",
 143   "vcd",
 144   "Albeu",
 145   "based on the code from ???",
 146   open_s,
 147   { "vcd", NULL },
 148   &stream_opts,
 149   1 // Urls are an option string
 150 };
 151
 152 #endif