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 "libmpdemux/mpeg_packetizer.h"
  50
  51 #define DEFAULT_MPEG_DECODER "/dev/video16"
  52 #define IVTV_VO_HDR "VO: [ivtv]"
  53
  54 /* ivtv private */
  55 int ivtv_fd = -1;
  56 static vo_mpegpes_t *pes;
  57
  58 /* suboptions */
  59 static int output = -1;
  60 static char *device = NULL;
  61
  62 static const opt_t subopts[] = {
  63   {"output",   OPT_ARG_INT,       &output,       int_non_neg},
  64   {"device",   OPT_ARG_MSTRZ,     &device,       NULL},
  65   {NULL}
  66 };
  67
  68 static const vo_info_t info =
  69 {
  70   "IVTV MPEG Video Decoder TV-Out",
  71   "ivtv",
  72   "Benjamin Zores",
  73   ""
  74 };
  75 const LIBVO_EXTERN (ivtv)
  76
  77 /* ivtv internals */
  78
  79 static uint32_t
  80 ivtv_reset (int blank_screen)
  81 {
  82   struct ivtv_cfg_stop_decode sd;
  83   struct ivtv_cfg_start_decode sd1;
  84   int flags = 0;
  85
  86   if (blank_screen)
  87     flags |= IVTV_STOP_FL_HIDE_FRAME;
  88   sd.flags = flags;
  89
  90   if (ioctl (ivtv_fd, IVTV_IOC_STOP_DECODE, &sd) < 0)
  91   {
  92     mp_msg (MSGT_VO, MSGL_ERR,
  93             "IVTV_IOC_STOP_DECODE: %s\n", strerror (errno));
  94     return 1;
  95   }
  96
  97   sd1.gop_offset = 0;
  98   sd1.muted_audio_frames = 0;
  99
 100   if (ioctl (ivtv_fd, IVTV_IOC_START_DECODE, &sd1) < 0)
 101   {
 102     mp_msg (MSGT_VO, MSGL_ERR,
 103             "IVTV_IOC_START_DECODE: %s\n", strerror (errno));
 104     return 1;
 105   }
 106
 107   return 0;
 108 }
 109
 110 int
 111 ivtv_write (const unsigned char *data, int len)
 112 {
 113   if (ivtv_fd < 0)
 114     return 0;
 115
 116   return write (ivtv_fd, data, len);
 117 }
 118
 119 /* video out functions */
 120
 121 static int
 122 config (uint32_t width, uint32_t height,
 123         uint32_t d_width, uint32_t d_height,
 124         uint32_t fullscreen, char *title, uint32_t format)
 125 {
 126   return 0;
 127 }
 128
 129 static int
 130 preinit (const char *arg)
 131 {
 132   struct v4l2_output vout;
 133   int err;
 134
 135   if (subopt_parse (arg, subopts) != 0)
 136   {
 137     mp_msg (MSGT_VO, MSGL_FATAL,
 138             "\n-vo ivtv command line help:\n"
 139             "Example: mplayer -vo ivtv:device=/dev/video16:output=2\n"
 140             "\nOptions:\n"
 141             "  device=/dev/videoX\n"
 142             "    Name of the MPEG decoder device file.\n"
 143             "  output=<0-...>\n"
 144             "    V4L2 id of the TV output.\n"
 145             "\n" );
 146     return -1;
 147   }
 148
 149   if (!device)
 150     device = strdup (DEFAULT_MPEG_DECODER);
 151
 152   ivtv_fd = open (device, O_RDWR);
 153   if (ivtv_fd < 0)
 154   {
 155     free (device);
 156     mp_msg (MSGT_VO, MSGL_FATAL, "%s %s\n", IVTV_VO_HDR, strerror (errno));
 157     return -1;
 158   }
 159
 160   /* list available outputs */
 161   vout.index = 0;
 162   err = 1;
 163   mp_msg (MSGT_VO, MSGL_INFO, "%s Available video outputs: ", IVTV_VO_HDR);
 164   while (ioctl (ivtv_fd, VIDIOC_ENUMOUTPUT, &vout) >= 0)
 165   {
 166     err = 0;
 167     mp_msg (MSGT_VO, MSGL_INFO, "'#%d, %s' ", vout.index, vout.name);
 168     vout.index++;
 169   }
 170   if (err)
 171   {
 172     mp_msg (MSGT_VO, MSGL_INFO, "none\n");
 173     free (device);
 174     return -1;
 175   }
 176   else
 177     mp_msg (MSGT_VO, MSGL_INFO, "\n");
 178
 179   /* set user specified output */
 180   if (output != -1)
 181   {
 182     if (ioctl (ivtv_fd, VIDIOC_S_OUTPUT, &output) < 0)
 183     {
 184       mp_msg (MSGT_VO, MSGL_ERR,
 185               "%s can't set output (%s)\n", IVTV_VO_HDR, strerror (errno));
 186       free (device);
 187       return -1;
 188     }
 189   }
 190
 191   /* display device name */
 192   mp_msg (MSGT_VO, MSGL_INFO, "%s using %s\n", IVTV_VO_HDR, device);
 193   free (device);
 194
 195   /* display current video output */
 196   if (ioctl (ivtv_fd, VIDIOC_G_OUTPUT, &output) == 0)
 197   {
 198     vout.index = output;
 199     if (ioctl (ivtv_fd, VIDIOC_ENUMOUTPUT, &vout) < 0)
 200     {
 201       mp_msg (MSGT_VO, MSGL_ERR,
 202               "%s can't get output (%s).\n", IVTV_VO_HDR, strerror (errno));
 203       return -1;
 204     }
 205     else
 206       mp_msg (MSGT_VO, MSGL_INFO,
 207               "%s video output: %s\n", IVTV_VO_HDR, vout.name);
 208   }
 209   else
 210   {
 211     mp_msg (MSGT_VO, MSGL_ERR,
 212             "%s can't get output (%s).\n", IVTV_VO_HDR, strerror (errno));
 213     return -1;
 214   }
 215
 216   /* clear output */
 217   ivtv_reset (1);
 218
 219   return 0;
 220 }
 221
 222 static void
 223 draw_osd (void)
 224 {
 225   /* do nothing */
 226 }
 227
 228 static int
 229 draw_frame (uint8_t * src[])
 230 {
 231   pes = (vo_mpegpes_t *) src[0];
 232   return 0;
 233 }
 234
 235 static void
 236 flip_page (void)
 237 {
 238   if (ivtv_fd < 0)
 239     return;
 240
 241   if (!pes)
 242     return;
 243
 244   send_mpeg_pes_packet (pes->data, pes->size, pes->id,
 245                          pes->timestamp ? pes->timestamp : vo_pts, 2,
 246                          ivtv_write);
 247
 248   /* ensure flip_page() won't be called twice */
 249   pes = NULL;
 250 }
 251
 252 static int
 253 draw_slice (uint8_t *image[], int stride[], int w, int h, int x, int y)
 254 {
 255   return 0;
 256 }
 257
 258 static void
 259 uninit (void)
 260 {
 261   if (ivtv_fd < 0)
 262     return;
 263
 264   /* clear output */
 265   ivtv_reset (1);
 266
 267   /* close device */
 268   close (ivtv_fd);
 269   ivtv_fd = -1;
 270 }
 271
 272 static void
 273 check_events (void)
 274 {
 275   /* do nothing */
 276 }
 277
 278 static int
 279 query_format (uint32_t format)
 280 {
 281   if (format != IMGFMT_MPEGPES)
 282     return 0;
 283
 284   return VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW | VFCAP_TIMER;
 285 }
 286
 287 static int
 288 control (uint32_t request, void *data)
 289 {
 290   switch (request)
 291   {
 292   case VOCTRL_PAUSE:
 293   case VOCTRL_RESUME:
 294     return ivtv_reset (0);
 295
 296   case VOCTRL_RESET:
 297     return ivtv_reset (1);
 298
 299   case VOCTRL_QUERY_FORMAT:
 300     return query_format (*((uint32_t*) data));
 301   }
 302
 303   return VO_NOTIMPL;
 304 }