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 "m_option.h"
  48 #include "m_struct.h"
  49 #include "tcp.h"
  50
  51 #include <vstream-client.h>
  52
  53 void vstream_error(const char *format, ...) {
  54     char buf[1024];
  55     va_list va;
  56     va_start(va, format);
  57     vsnprintf(buf, 1024, format, va);
  58     va_end(va);
  59     mp_msg(MSGT_STREAM, MSGL_ERR, "%s", buf);
  60 }
  61
  62 static struct stream_priv_s {
  63   char* host;
  64   char* fsid;
  65 } stream_priv_dflts = {
  66   NULL,
  67   NULL
  68 };
  69
  70 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  71 /// URL definition
  72 static const m_option_t stream_opts_fields[] = {
  73   {"hostname", ST_OFF(host), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  74   {"filename", ST_OFF(fsid), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  75   { NULL, NULL, 0, 0, 0, 0,  NULL }
  76 };
  77
  78 static const struct m_struct_st stream_opts = {
  79   "vstream",
  80   sizeof(struct stream_priv_s),
  81   &stream_priv_dflts,
  82   stream_opts_fields
  83 };
  84
  85 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  86   struct stream_priv_s* p = (struct stream_priv_s*)s->priv;
  87   int len = vstream_load_chunk(p->fsid, buffer, max_len, s->pos);
  88   if (len <= 0) return 0;
  89   return len;
  90 }
  91
  92 static int seek(stream_t *s,off_t newpos) {
  93   s->pos = newpos;
  94   return 1;
  95 }
  96
  97 static int control(struct stream *s, int cmd, void *arg) {
  98   return STREAM_UNSUPPORTED;
  99 }
 100
 101 static void close_s(struct stream *s) {
 102 }
 103
 104 static int open_s(stream_t *stream, int mode, void* opts, int* file_format) {
 105   int f;
 106   struct stream_priv_s* p = (struct stream_priv_s*)opts;
 107
 108   if(mode != STREAM_READ)
 109     return STREAM_UNSUPPORTED;
 110
 111   if(!p->host) {
 112     mp_msg(MSGT_OPEN, MSGL_ERR, "We need a host name (ex: tivo://hostname/fsid)\n");
 113     m_struct_free(&stream_opts, opts);
 114     return STREAM_ERROR;
 115   }
 116
 117   if(!p->fsid || strlen(p->fsid) == 0) {
 118     mp_msg(MSGT_OPEN, MSGL_ERR, "We need an fsid (ex: tivo://hostname/fsid)\n");
 119     m_struct_free(&stream_opts, opts);
 120     return STREAM_ERROR;
 121   }
 122
 123   f = connect2Server(p->host, VSERVER_PORT, 1);
 124
 125   if(f < 0) {
 126     mp_msg(MSGT_OPEN, MSGL_ERR, "Connection to %s failed\n", p->host);
 127     m_struct_free(&stream_opts, opts);
 128     return STREAM_ERROR;
 129   }
 130   stream->fd = f;
 131
 132   vstream_set_socket_fd(f);
 133
 134   if (!strcmp(p->fsid, "list")) {
 135     vstream_list_streams(0);
 136     return STREAM_ERROR;
 137   } else if (!strcmp(p->fsid, "llist")) {
 138     vstream_list_streams(1);
 139     return STREAM_ERROR;
 140   }
 141
 142   if (vstream_start()) {
 143     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #1\n");
 144     m_struct_free(&stream_opts, opts);
 145     return STREAM_ERROR;
 146   }
 147   if (vstream_startstream(p->fsid)) {
 148     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #2\n");
 149     m_struct_free(&stream_opts, opts);
 150     return STREAM_ERROR;
 151   }
 152
 153   stream->start_pos = 0;
 154   stream->end_pos = vstream_streamsize();
 155   mp_msg(MSGT_OPEN, MSGL_DBG2, "Tivo stream size is %lld\n",
 156          (long long)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 };