libvo/vo_ivtv.c

   1 /*
   2  * video output for WinTV PVR-150/250/350 (a.k.a IVTV) cards
   3  * TV-Out through hardware MPEG decoder
   4  * Based on some old code from ivtv driver authors.
   5  * See http://ivtvdriver.org/index.php/Main_Page for more details on the
   6  * cards supported by the ivtv driver.
   7  *
   8  * Copyright (C) 2006 Benjamin Zores
   9  *
  10  * This file is part of MPlayer.
  11  *
  12  * MPlayer is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * MPlayer is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "config.h"
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #include <sys/ioctl.h>
  36 #include <fcntl.h>
  37 #include <unistd.h>
  38 #include <stdlib.h>
  39 #include <inttypes.h>
  40 #include <linux/types.h>
  41 #include <linux/videodev2.h>
  42 #include <linux/ivtv.h>
  43 #include <linux/ioctl.h>
  44
  45 #include "mp_msg.h"
  46 #include "subopt-helper.h"
  47 #include "video_out.h"
  48 #include "video_out_internal.h"
  49 #include "vo_ivtv.h"
  50 #include "libmpdemux/mpeg_packetizer.h"
  51
  52 #define DEFAULT_MPEG_DECODER "/dev/video16"
  53 #define IVTV_VO_HDR "VO: [ivtv]"
  54
  55 /* ivtv private */
  56 int ivtv_fd = -1;
  57 static vo_mpegpes_t *pes;
  58
  59 /* suboptions */
  60 static int output = -1;
  61 static char *device = NULL;
  62
  63 static const opt_t subopts[] = {
  64   {"output",   OPT_ARG_INT,       &output,       int_non_neg},
  65   {"device",   OPT_ARG_MSTRZ,     &device,       NULL},
  66   {NULL}
  67 };
  68
  69 static const vo_info_t info =
  70 {
  71   "IVTV MPEG Video Decoder TV-Out",
  72   "ivtv",
  73   "Benjamin Zores",
  74   ""
  75 };
  76 const LIBVO_EXTERN (ivtv)
  77
  78 /* ivtv internals */
  79
  80 static uint32_t
  81 ivtv_reset (int blank_screen)
  82 {
  83   struct ivtv_cfg_stop_decode sd;
  84   struct ivtv_cfg_start_decode sd1;
  85   int flags = 0;
  86
  87   if (blank_screen)
  88     flags |= IVTV_STOP_FL_HIDE_FRAME;
  89   sd.flags = flags;
  90
  91   if (ioctl (ivtv_fd, IVTV_IOC_STOP_DECODE, &sd) < 0)
  92   {
  93     mp_msg (MSGT_VO, MSGL_ERR,
  94             "IVTV_IOC_STOP_DECODE: %s\n", strerror (errno));
  95     return 1;
  96   }
  97
  98   sd1.gop_offset = 0;
  99   sd1.muted_audio_frames = 0;
 100
 101   if (ioctl (ivtv_fd, IVTV_IOC_START_DECODE, &sd1) < 0)
 102   {
 103     mp_msg (MSGT_VO, MSGL_ERR,
 104             "IVTV_IOC_START_DECODE: %s\n", strerror (errno));
 105     return 1;
 106   }
 107
 108   return 0;
 109 }
 110
 111 int
 112 ivtv_write (const unsigned char *data, int len)
 113 {
 114   if (ivtv_fd < 0)
 115     return 0;
 116
 117   return write (ivtv_fd, data, len);
 118 }
 119
 120 /* video out functions */
 121
 122 static int
 123 config (uint32_t width, uint32_t height,
 124         uint32_t d_width, uint32_t d_height,
 125         uint32_t fullscreen, char *title, uint32_t format)
 126 {
 127   return 0;
 128 }
 129
 130 static int
 131 preinit (const char *arg)
 132 {
 133   struct v4l2_output vout;
 134   int err;
 135
 136   if (subopt_parse (arg, subopts) != 0)
 137   {
 138     mp_msg (MSGT_VO, MSGL_FATAL,
 139             "\n-vo ivtv command line help:\n"
 140             "Example: mplayer -vo ivtv:device=/dev/video16:output=2\n"
 141             "\nOptions:\n"
 142             "  device=/dev/videoX\n"
 143             "    Name of the MPEG decoder device file.\n"
 144             "  output=<0-...>\n"
 145             "    V4L2 id of the TV output.\n"
 146             "\n" );
 147     return -1;
 148   }
 149
 150   if (!device)
 151     device = strdup (DEFAULT_MPEG_DECODER);
 152
 153   ivtv_fd = open (device, O_RDWR);
 154   if (ivtv_fd < 0)
 155   {
 156     free (device);
 157     mp_msg (MSGT_VO, MSGL_FATAL, "%s %s\n", IVTV_VO_HDR, strerror (errno));
 158     return -1;
 159   }
 160
 161   /* list available outputs */
 162   vout.index = 0;
 163   err = 1;
 164   mp_msg (MSGT_VO, MSGL_INFO, "%s Available video outputs: ", IVTV_VO_HDR);
 165   while (ioctl (ivtv_fd, VIDIOC_ENUMOUTPUT, &vout) >= 0)
 166   {
 167     err = 0;
 168     mp_msg (MSGT_VO, MSGL_INFO, "'#%d, %s' ", vout.index, vout.name);
 169     vout.index++;
 170   }
 171   if (err)
 172   {
 173     mp_msg (MSGT_VO, MSGL_INFO, "none\n");
 174     free (device);
 175     return -1;
 176   }
 177   else
 178     mp_msg (MSGT_VO, MSGL_INFO, "\n");
 179
 180   /* set user specified output */
 181   if (output != -1)
 182   {
 183     if (ioctl (ivtv_fd, VIDIOC_S_OUTPUT, &output) < 0)
 184     {
 185       mp_msg (MSGT_VO, MSGL_ERR,
 186               "%s can't set output (%s)\n", IVTV_VO_HDR, strerror (errno));
 187       free (device);
 188       return -1;
 189     }
 190   }
 191
 192   /* display device name */
 193   mp_msg (MSGT_VO, MSGL_INFO, "%s using %s\n", IVTV_VO_HDR, device);
 194   free (device);
 195
 196   /* display current video output */
 197   if (ioctl (ivtv_fd, VIDIOC_G_OUTPUT, &output) == 0)
 198   {
 199     vout.index = output;
 200     if (ioctl (ivtv_fd, VIDIOC_ENUMOUTPUT, &vout) < 0)
 201     {
 202       mp_msg (MSGT_VO, MSGL_ERR,
 203               "%s can't get output (%s).\n", IVTV_VO_HDR, strerror (errno));
 204       return -1;
 205     }
 206     else
 207       mp_msg (MSGT_VO, MSGL_INFO,
 208               "%s video output: %s\n", IVTV_VO_HDR, vout.name);
 209   }
 210   else
 211   {
 212     mp_msg (MSGT_VO, MSGL_ERR,
 213             "%s can't get output (%s).\n", IVTV_VO_HDR, strerror (errno));
 214     return -1;
 215   }
 216
 217   /* clear output */
 218   ivtv_reset (1);
 219
 220   return 0;
 221 }
 222
 223 static void
 224 draw_osd (void)
 225 {
 226   /* do nothing */
 227 }
 228
 229 static int
 230 draw_frame (uint8_t * src[])
 231 {
 232   pes = (vo_mpegpes_t *) src[0];
 233   return 0;
 234 }
 235
 236 static void
 237 flip_page (void)
 238 {
 239   if (ivtv_fd < 0)
 240     return;
 241
 242   if (!pes)
 243     return;
 244
 245   send_mpeg_pes_packet (pes->data, pes->size, pes->id,
 246                          pes->timestamp ? pes->timestamp : vo_pts, 2,
 247                          ivtv_write);
 248
 249   /* ensure flip_page() won't be called twice */
 250   pes = NULL;
 251 }
 252
 253 static int
 254 draw_slice (uint8_t *image[], int stride[], int w, int h, int x, int y)
 255 {
 256   return 0;
 257 }
 258
 259 static void
 260 uninit (void)
 261 {
 262   if (ivtv_fd < 0)
 263     return;
 264
 265   /* clear output */
 266   ivtv_reset (1);
 267
 268   /* close device */
 269   close (ivtv_fd);
 270   ivtv_fd = -1;
 271 }
 272
 273 static void
 274 check_events (void)
 275 {
 276   /* do nothing */
 277 }
 278
 279 static int
 280 query_format (uint32_t format)
 281 {
 282   if (format != IMGFMT_MPEGPES)
 283     return 0;
 284
 285   return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_TIMER;
 286 }
 287
 288 static int
 289 control (uint32_t request, void *data)
 290 {
 291   switch (request)
 292   {
 293   case VOCTRL_PAUSE:
 294   case VOCTRL_RESUME:
 295     return ivtv_reset (0);
 296
 297   case VOCTRL_RESET:
 298     return ivtv_reset (1);
 299
 300   case VOCTRL_QUERY_FORMAT:
 301     return query_format (*((uint32_t*) data));
 302   }
 303
 304   return VO_NOTIMPL;
 305 }