stream/stream_vstream.c

   1 /*
   2  * Copyright (C) Joey Parrish
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 /*
  22  *   If you have a tivo with the vstream server installed, (and most tivo
  23  *   hackers do,) then you can connect to it and stream ty files using
  24  *   this module.  The url syntax is tivo://host/fsid or tivo://host/list
  25  *   to list the available recordings and their fsid's.
  26  *   This module depends on libvstream-client, which is available from
  27  *   http://armory.nicewarrior.org/projects/vstream-client .
  28  *
  29  */
  30
  31
  32 #include "config.h"
  33
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <fcntl.h>
  37 #include <unistd.h>
  38 #include <stdarg.h>
  39
  40 #include <stdlib.h>
  41 #include <stdio.h>
  42 #include <inttypes.h>
  43 #include <errno.h>
  44
  45 #include "mp_msg.h"
  46 #include "stream.h"
  47 #include "help_mp.h"
  48 #include "m_option.h"
  49 #include "m_struct.h"
  50 #include "tcp.h"
  51
  52 #include <vstream-client.h>
  53
  54 void vstream_error(const char *format, ...) {
  55     char buf[1024];
  56     va_list va;
  57     va_start(va, format);
  58     vsnprintf(buf, 1024, format, va);
  59     va_end(va);
  60     mp_msg(MSGT_STREAM, MSGL_ERR, buf);
  61 }
  62
  63 static struct stream_priv_s {
  64   char* host;
  65   char* fsid;
  66 } stream_priv_dflts = {
  67   NULL,
  68   NULL
  69 };
  70
  71 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  72 /// URL definition
  73 static const m_option_t stream_opts_fields[] = {
  74   {"hostname", ST_OFF(host), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  75   {"filename", ST_OFF(fsid), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  76   { NULL, NULL, 0, 0, 0, 0,  NULL }
  77 };
  78
  79 static const struct m_struct_st stream_opts = {
  80   "vstream",
  81   sizeof(struct stream_priv_s),
  82   &stream_priv_dflts,
  83   stream_opts_fields
  84 };
  85
  86 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  87   struct stream_priv_s* p = (struct stream_priv_s*)s->priv;
  88   int len = vstream_load_chunk(p->fsid, buffer, max_len, s->pos);
  89   if (len <= 0) return 0;
  90   return len;
  91 }
  92
  93 static int seek(stream_t *s,off_t newpos) {
  94   s->pos = newpos;
  95   return 1;
  96 }
  97
  98 static int control(struct stream_st *s,int cmd,void* arg) {
  99   return STREAM_UNSUPPORTED;
 100 }
 101
 102 static void close_s(struct stream_st *s) {
 103 }
 104
 105 static int open_s(stream_t *stream, int mode, void* opts, int* file_format) {
 106   int f;
 107   struct stream_priv_s* p = (struct stream_priv_s*)opts;
 108
 109   if(mode != STREAM_READ)
 110     return STREAM_UNSUPPORTED;
 111
 112   if(!p->host) {
 113     mp_msg(MSGT_OPEN, MSGL_ERR, "We need a host name (ex: tivo://hostname/fsid)\n");
 114     m_struct_free(&stream_opts, opts);
 115     return STREAM_ERROR;
 116   }
 117
 118   if(!p->fsid || strlen(p->fsid) == 0) {
 119     mp_msg(MSGT_OPEN, MSGL_ERR, "We need an fsid (ex: tivo://hostname/fsid)\n");
 120     m_struct_free(&stream_opts, opts);
 121     return STREAM_ERROR;
 122   }
 123
 124   f = connect2Server(p->host, VSERVER_PORT, 1);
 125
 126   if(f < 0) {
 127     mp_msg(MSGT_OPEN, MSGL_ERR, "Connection to %s failed\n", p->host);
 128     m_struct_free(&stream_opts, opts);
 129     return STREAM_ERROR;
 130   }
 131   stream->fd = f;
 132
 133   vstream_set_socket_fd(f);
 134
 135   if (!strcmp(p->fsid, "list")) {
 136     vstream_list_streams(0);
 137     return STREAM_ERROR;
 138   } else if (!strcmp(p->fsid, "llist")) {
 139     vstream_list_streams(1);
 140     return STREAM_ERROR;
 141   }
 142
 143   if (vstream_start()) {
 144     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #1\n");
 145     m_struct_free(&stream_opts, opts);
 146     return STREAM_ERROR;
 147   }
 148   if (vstream_startstream(p->fsid)) {
 149     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #2\n");
 150     m_struct_free(&stream_opts, opts);
 151     return STREAM_ERROR;
 152   }
 153
 154   stream->start_pos = 0;
 155   stream->end_pos = vstream_streamsize();
 156   mp_msg(MSGT_OPEN, MSGL_DBG2, "Tivo stream size is %d\n", stream->end_pos);
 157
 158   stream->priv = p;
 159   stream->fill_buffer = fill_buffer;
 160   stream->control = control;
 161   stream->seek = seek;
 162   stream->close = close_s;
 163   stream->type = STREAMTYPE_VSTREAM;
 164
 165   return STREAM_OK;
 166 }
 167
 168 const stream_info_t stream_info_vstream = {
 169   "vstream client",
 170   "vstream",
 171   "Joey",
 172   "",
 173   open_s,
 174   { "tivo", NULL },
 175   &stream_opts,
 176   1 // Url is an option string
 177 };