stream/stream_vstream.c

   1 /*
   2  *  stream_vstream.c
   3  *
   4  *      Copyright (C) Joey Parrish
   5  *
   6  *  This file is part of MPlayer, a free movie player.
   7  *
   8  *  MPlayer is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2, or (at your option)
  11  *  any later version.
  12  *
  13  *  MPlayer is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with MPlayer; if not, write to the Free Software
  20  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  *   If you have a tivo with the vstream server installed, (and most tivo
  25  *   hackers do,) then you can connect to it and stream ty files using
  26  *   this module.  The url syntax is tivo://host/fsid or tivo://host/list
  27  *   to list the available recordings and their fsid's.
  28  *   This module depends on libvstream-client, which is available from
  29  *   http://armory.nicewarrior.org/projects/vstream-client .
  30  *
  31  */
  32
  33
  34 #include "config.h"
  35
  36 #include <sys/types.h>
  37 #include <sys/stat.h>
  38 #include <fcntl.h>
  39 #include <unistd.h>
  40 #include <stdarg.h>
  41
  42 #include <stdlib.h>
  43 #include <stdio.h>
  44 #include <inttypes.h>
  45 #include <errno.h>
  46
  47 #include "mp_msg.h"
  48 #include "stream.h"
  49 #include "help_mp.h"
  50 #include "m_option.h"
  51 #include "m_struct.h"
  52 #include "tcp.h"
  53
  54 #include <vstream-client.h>
  55
  56 void vstream_error(const char *format, ...) {
  57     char buf[1024];
  58     va_list va;
  59     va_start(va, format);
  60     vsnprintf(buf, 1024, format, va);
  61     va_end(va);
  62     mp_msg(MSGT_STREAM, MSGL_ERR, buf);
  63 }
  64
  65 static struct stream_priv_s {
  66   char* host;
  67   char* fsid;
  68 } stream_priv_dflts = {
  69   NULL,
  70   NULL
  71 };
  72
  73 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  74 /// URL definition
  75 static const m_option_t stream_opts_fields[] = {
  76   {"hostname", ST_OFF(host), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  77   {"filename", ST_OFF(fsid), CONF_TYPE_STRING, 0, 0 ,0, NULL},
  78   { NULL, NULL, 0, 0, 0, 0,  NULL }
  79 };
  80
  81 static struct m_struct_st stream_opts = {
  82   "vstream",
  83   sizeof(struct stream_priv_s),
  84   &stream_priv_dflts,
  85   stream_opts_fields
  86 };
  87
  88 static int fill_buffer(stream_t *s, char* buffer, int max_len){
  89   struct stream_priv_s* p = (struct stream_priv_s*)s->priv;
  90   int len = vstream_load_chunk(p->fsid, buffer, max_len, s->pos);
  91   if (len <= 0) return 0;
  92   return len;
  93 }
  94
  95 static int seek(stream_t *s,off_t newpos) {
  96   s->pos = newpos;
  97   return 1;
  98 }
  99
 100 static int control(struct stream_st *s,int cmd,void* arg) {
 101   return STREAM_UNSUPPORTED;
 102 }
 103
 104 static void close_s(struct stream_st *s) {
 105 }
 106
 107 static int open_s(stream_t *stream, int mode, void* opts, int* file_format) {
 108   int f;
 109   struct stream_priv_s* p = (struct stream_priv_s*)opts;
 110
 111   if(mode != STREAM_READ)
 112     return STREAM_UNSUPPORTED;
 113
 114   if(!p->host) {
 115     mp_msg(MSGT_OPEN, MSGL_ERR, "We need a host name (ex: tivo://hostname/fsid)\n");
 116     m_struct_free(&stream_opts, opts);
 117     return STREAM_ERROR;
 118   }
 119
 120   if(!p->fsid || strlen(p->fsid) == 0) {
 121     mp_msg(MSGT_OPEN, MSGL_ERR, "We need an fsid (ex: tivo://hostname/fsid)\n");
 122     m_struct_free(&stream_opts, opts);
 123     return STREAM_ERROR;
 124   }
 125
 126   f = connect2Server(p->host, VSERVER_PORT, 1);
 127
 128   if(f < 0) {
 129     mp_msg(MSGT_OPEN, MSGL_ERR, "Connection to %s failed\n", p->host);
 130     m_struct_free(&stream_opts, opts);
 131     return STREAM_ERROR;
 132   }
 133   stream->fd = f;
 134
 135   vstream_set_socket_fd(f);
 136
 137   if (!strcmp(p->fsid, "list")) {
 138     vstream_list_streams(0);
 139     return STREAM_ERROR;
 140   } else if (!strcmp(p->fsid, "llist")) {
 141     vstream_list_streams(1);
 142     return STREAM_ERROR;
 143   }
 144
 145   if (vstream_start()) {
 146     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #1\n");
 147     m_struct_free(&stream_opts, opts);
 148     return STREAM_ERROR;
 149   }
 150   if (vstream_startstream(p->fsid)) {
 151     mp_msg(MSGT_OPEN, MSGL_ERR, "Cryptic internal error #2\n");
 152     m_struct_free(&stream_opts, opts);
 153     return STREAM_ERROR;
 154   }
 155
 156   stream->start_pos = 0;
 157   stream->end_pos = vstream_streamsize();
 158   mp_msg(MSGT_OPEN, MSGL_DBG2, "Tivo stream size is %d\n", stream->end_pos);
 159
 160   stream->priv = p;
 161   stream->fill_buffer = fill_buffer;
 162   stream->control = control;
 163   stream->seek = seek;
 164   stream->close = close_s;
 165   stream->type = STREAMTYPE_VSTREAM;
 166
 167   return STREAM_OK;
 168 }
 169
 170 const stream_info_t stream_info_vstream = {
 171   "vstream client",
 172   "vstream",
 173   "Joey",
 174   "",
 175   open_s,
 176   { "tivo", NULL },
 177   &stream_opts,
 178   1 // Url is an option string
 179 };