breakup of dxr3 videoout plugin to allow for easier syncronisation of

encoding and standard plugins

CVS patchset: 979
CVS date: 2001/11/07 12:30:54

1 files changed, 622 insertions, 0 deletions

diff --git a/src/dxr3/dxr3_vo_encoder.c b/src/dxr3/dxr3_vo_encoder.c
new file mode 100644
index 000000000..cd226d91a
--- /dev/null
+++ b/src/dxr3/dxr3_vo_encoder.c
@@ -0,0 +1,622 @@
+/* 
+ * Copyright (C) 2000-2001 the xine project
+ * 
+ * This file is part of xine, a unix video player.
+ * 
+ * xine is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * xine is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
+ *
+ * $Id: dxr3_vo_encoder.c,v 1.1 2001/11/07 12:30:54 mlampard Exp $
+ *
+ * mpeg1 encoding video out plugin for the dxr3.  
+ *
+ * modifications to the original dxr3 video out plugin by 
+ * Mike Lampard <mike at web2u.com.au>
+ * this first standalone version by 
+ * Harm van der Heijden <hrm at users.sourceforge.net>
+ *
+ * Changes are mostly in dxr3_update_frame_format() (init stuff),
+ * dxr3_frame_copy() (encoding), and dxr3_display_frame() (send stream
+ * to device). The driver and frame structs are changed too.
+ *
+ * What it does
+ * - automatically insert black borders to correct a.r. to 16:9 of 4:3
+ *   if needed (these are the only ones that dxr3 supports).
+ * - detect framerate from frame's duration value and set it as mpeg1's
+ *   framerate. We are hampered a little by the fact that mpeg1 supports
+ *   a limited number of frame rates. Most notably 23.976 (NTSC-FILM) 
+ *   is missing
+ * - (ab)uses the vo_frame_t->copy() function to encode mpeg1 as soon as
+ *   the frame is available.
+ * - full support for YUY2 output; automatic conversion to YV12
+ *
+ * TODO:
+ * - try ffmpeg encoder instead of libfame
+ * - jerkiness issues with mpeg1 output (possibly fixed, see below)
+ * - sync issues (possibly fixed, see below)
+ * - split off code that is shared with original dxr3 decoder, for
+ *   maintainability of the whole thing.
+ * - init; sometimes (usually first time after boot) there's no output
+ *   to tv. The second attempt usually works.
+ * - test with overlay (haven't figured out yet how to get it working
+ *   on my system, not even with standard dxr3 driver -- harm)
+ *
+ ***** Update 28/10/2001 by Harm
+ *
+ * I've implemented a method for buffering the mpeg data
+ * (basically copying it to the frame) for display (read: write to mpeg
+ * device) when xine requests it via dxr3_frame_display. It helps sync,
+ * but playback is still not smooth.
+ *
+ * buffering enabled by default, see USE_MPEG_BUFFER define.
+ *
+ * Moved the mpeg device (/dev/em8300_fd) file descriptor to vo_driver_t;
+ * very weird: to be able to use it in frame_display, I must reopen it 
+ * there! Is that a thread thing or something? Normally you'd open it in
+ * the driver's init function. 
+ *
+ ***** Update 29/10/2001 by Harm
+ *
+ * Mike Lampard figured out a solution to the jerky playback problem that
+ * seems to work well; write the value 6 to the MV_COMMAND register!
+ * I'm guessing this puts the dxr3 playback in some sort of scan mode
+ * where it plays frames as soon as it can. This combines well with our
+ * method because we deliver them when they need displaying.
+ * 
+ * This fix is turned on/off by setting USE_MAGIC_REGISTER to 1/0. 
+ *
+ * Note, we write to the register at every frame; possibly overkill, but
+ * there seems to be no noticeable overhead and better safe than sorry...
+ *
+ * If you still get occasional jerky playback, try lowering the 
+ * mpeg1 encoding qualtiy (.xinerc var dxr3enc_quality) first. On my
+ * system, there are occasional scenes with high entropy that libfame
+ * can't encode at hi quality and 25 fps. Remember, the time it takes
+ * to encode a frame is not fixed but depends on the complexity!
+ *
+ * You wanna hear a funny thing? With the register fix in place, it no
+ * longer seems to matter whether USE_MPEG_BUFFER is on or off; in both
+ * cases A/V sync seems fine! Weird... I'm leaving it on for the moment,
+ * to be safe. It should give the encoder the option to spend more than
+ * 1/fps on occasional frames.
+ *
+ * Other changes:
+ * - .xinerc: renamed dxr3_enc_quality to dxr3enc_quality
+ * - .xinerc: added dxr3_file for output of mpeg stream to file, for 
+ * debugging. set to <none> or delete the entry to send stream to dxr3.
+ *
+ ***** Update 29/10/2001 (later) by Harm
+ *
+ * Added support for encoding using libavcodec from ffmpeg. See the defines
+ * USE_LIBFAME and USE_FFMPEG (mutually exclusive)
+ * These defines are getting quite messy; there's three of them now.
+ * Need to make some decisions soon :-)
+ * 
+ * If using ffmpeg, do not link against libavcodec from xine sources!
+ * There's something wrong with that one, you'll get rubbish output.
+ * Get the ffmpeg cvs, compile, then copy libavcodec.a to /usr/local/lib
+ * or something.
+ *
+ * At the moment libffmpeg's encoder output is pretty crappy, with weird
+ * ghost effects left and right of objects. At the moment using a fixed 
+ * quantizer value. Somewhat more cpu intensive than libfame.
+ */
+
+/* encoder specific config/setup stuff 	*
+ * must be before dxr3_video_out.h      */
+#include "dxr3_vo_encoder.h"
+
+/* dxr3 vo globals 			*/
+#include "dxr3_video_out.h"
+
+
+static uint32_t dxr3_get_capabilities (vo_driver_t *this_gen)
+{
+	/* Since we have no vo format, we return dummy values here */
+	return VO_CAP_YV12 | VO_CAP_YUY2 |
+		VO_CAP_SATURATION | VO_CAP_BRIGHTNESS | VO_CAP_CONTRAST;
+}
+
+/* This are dummy functions to fill in the frame object */
+
+static void dummy_frame_field (vo_frame_t *vo_img, int which_field)
+{
+	fprintf(stderr, "dxr3_vo: dummy_frame_field called!\n");
+}
+
+static void dxr3_frame_dispose (vo_frame_t *frame_gen)
+{
+  dxr3_frame_t  *frame = (dxr3_frame_t *) frame_gen; 
+  if (frame->mem[0])
+    free (frame->mem[0]);
+  if (frame->mem[1])
+    free (frame->mem[1]);
+  if (frame->mem[2])
+    free (frame->mem[2]);
+#if USE_MPEG_BUFFER
+  free(frame->mpeg);
+#endif
+  free(frame);
+}
+
+static void dxr3_frame_copy(vo_frame_t *frame_gen, uint8_t **src);
+
+static vo_frame_t *dxr3_alloc_frame (vo_driver_t *this_gen)
+{
+  /* dxr3_driver_t  *this = (dxr3_driver_t *) this_gen; */
+  dxr3_frame_t   *frame;
+
+  frame = (dxr3_frame_t *) malloc (sizeof (dxr3_frame_t));
+  memset (frame, 0, sizeof(dxr3_frame_t));
+
+  frame->vo_frame.copy    = dxr3_frame_copy; 
+  frame->vo_frame.field   = dummy_frame_field; 
+  frame->vo_frame.dispose = dxr3_frame_dispose;
+
+#if USE_MPEG_BUFFER
+  frame->mpeg = (unsigned char *) malloc (DEFAULT_BUFFER_SIZE);
+#endif
+
+  return (vo_frame_t*) frame;
+}
+
+static void dxr3_update_frame_format (vo_driver_t *this_gen,
+				      vo_frame_t *frame_gen,
+				      uint32_t width, uint32_t height,
+				      int ratio_code, int format, int flags)
+{
+  dxr3_driver_t  *this = (dxr3_driver_t *) this_gen; 
+  int aspect;  
+  dxr3_frame_t  *frame = (dxr3_frame_t *) frame_gen; 
+  int image_size, oheight;
+  float fps;
+
+  /* reset the copy calls counter (number of calls to dxr3_frame_copy) */	
+  frame->copy_calls = 0;
+  frame->vo_instance = this;
+
+  aspect = this->aspectratio;
+  oheight = this->oheight;
+
+  /* check aspect ratio, see if we need to add black borders */
+  if ((this->video_width != width) || (this->video_iheight != height) ||
+      (this->video_aspect != ratio_code)) {
+    switch (ratio_code) {
+    case XINE_ASPECT_RATIO_4_3: /* 4:3 */
+      aspect = ASPECT_FULL;
+      oheight = height; 
+      break;
+    case XINE_ASPECT_RATIO_ANAMORPHIC:
+      aspect = ASPECT_ANAMORPHIC;
+      oheight = height; 
+      break;
+    default: /* assume square pixel */
+      aspect = ASPECT_ANAMORPHIC;
+      oheight = (int)(width * 9./16.);
+      if (oheight < height) { /* frame too high, try 4:3 */
+        aspect = ASPECT_FULL;
+        oheight = (int)(width * 3./4.);
+      }
+    }  
+    /* find closest multiple of 16 */
+    oheight = 16*(int)(oheight / 16. + 0.5);
+    if (oheight < height)
+      oheight = height;/* no good, need horizontal bars (not yet) */
+
+    this->oheight = oheight;
+
+    /* Tell the viewers about the aspect ratio stuff. */
+    if (oheight - height > 0) 
+      printf("dxr3enc: adding %d black lines to get %s a.r.\n", 
+              oheight-height, aspect == ASPECT_FULL ? "4:3" : "16:9");
+
+    /* if YUY2 and dimensions changed, we need to re-allocate the
+     * internal YV12 buffer */
+    if (format == IMGFMT_YUY2) {
+      if (this->buf[0]) free(this->buf[0]);  
+      if (this->buf[1]) free(this->buf[1]);  
+      if (this->buf[2]) free(this->buf[2]);
+
+      image_size = width * oheight;
+
+      this->out[0] = malloc_aligned(16, image_size, (void*)&this->buf[0]);
+      this->out[1] = malloc_aligned(16, image_size/4, (void*)&this->buf[1]);
+      this->out[2] = malloc_aligned(16, image_size/4, (void*)&this->buf[2]);
+
+      /* fill with black (yuv 16,128,128) */
+      memset(this->out[0], 16, image_size);
+      memset(this->out[1], 128, image_size/4);
+      memset(this->out[2], 128, image_size/4);
+
+      printf("dxr3enc: Using YUY2->YV12 conversion\n");  
+    }
+  }
+
+  /* if dimensions changed, we need to re-allocate frame memory */
+  if ((frame->width != width) || (frame->height != height)) {
+    if (frame->mem[0]) {
+      free (frame->mem[0]);
+      frame->mem[0] = NULL;
+    }
+    if (frame->mem[1]) {
+      free (frame->mem[1]);
+      frame->mem[1] = NULL;
+    }
+    if (frame->mem[2]) {
+      free (frame->mem[2]);
+      frame->mem[2] = NULL;
+    }
+
+    if (format == IMGFMT_YUY2) {
+      image_size = width * height; /* does not include black bars */
+      /* planar format, only base[0] */
+      frame->vo_frame.base[0] = malloc_aligned(16, image_size*2, (void**)&frame->mem[0]);
+      frame->vo_frame.base[1] = frame->vo_frame.base[2] = 0;
+      frame->real_base[0] = frame->real_base[1] = frame->real_base[2] = 0;
+      /* we do the black bar stuff while converting to YV12 */
+    }
+    else { /* IMGFMT_YV12 */
+      image_size = width * oheight; /* includes black bars */
+      frame->real_base[0] = malloc_aligned(16,image_size, 
+                                             (void**) &frame->mem[0]);
+      frame->real_base[1] = malloc_aligned(16,image_size/4, 
+                                             (void**) &frame->mem[1]);
+      frame->real_base[2] = malloc_aligned(16,image_size/4, 
+                                             (void**) &frame->mem[2]);
+      /* fill with black (yuv 16,128,128) */
+      memset(frame->real_base[0], 16, image_size);
+      memset(frame->real_base[1], 128, image_size/4);
+      memset(frame->real_base[2], 128, image_size/4);
+
+      /* fix offsets, so the decoder does not see the top black bar */
+      frame->vo_frame.base[0] = frame->real_base[0] + width * (oheight - height)/2;
+      frame->vo_frame.base[1] = frame->real_base[1] + width/2 * (oheight - height)/4;
+      frame->vo_frame.base[2] = frame->real_base[2] + width/2 * (oheight - height)/4;
+    }
+  }
+      
+  frame->width  = width;
+  frame->height = height;
+  frame->format = format;
+  this->video_width  = width;
+  this->video_iheight = height;
+  this->video_height = oheight;
+  this->video_aspect = ratio_code;
+
+  /* init encoder if needed */
+#if USE_LIBFAME
+  if (!fc)
+  {
+    if (!(fc = fame_open ()))
+      puts ("Couldn't start the FAME library");
+   
+    buffer = (unsigned char *) malloc (DEFAULT_BUFFER_SIZE);
+    fp.quality=this->config->lookup_int(this->config,"dxr3enc_quality",90);
+    fp.width = width;
+    fp.height = oheight;
+    fp.profile = "mpeg1";
+    fp.coding = "I";
+    fp.verbose = 0;   /* we don't need any more info.. thanks :) */ 
+
+    /* start guessing the framerate */
+    fps = 90000.0/frame->vo_frame.duration;
+    if (fabs(fps - 25) < 0.01) { /* PAL */
+      printf("dxr3enc: setting mpeg output framerate to PAL (25 Hz)\n");
+      fp.frame_rate_num = 25; fp.frame_rate_den = 1; 
+    }  
+    else if (fabs(fps - 23.976) < 0.01) { /* NTSC film */
+      /* 23.976 not supported by mpeg 1 */
+      printf("dxr3enc: setting mpeg output framerate to 24 Hz (should be 23.976)\n");
+      fp.frame_rate_num = 24; fp.frame_rate_den = 1; 
+    }
+    else if (fabs(fps - 29.97) < 0.01) { /* NTSC */
+      printf("dxr3enc: setting mpeg output framerate to NTSC (29.97 Hz)\n");
+      fp.frame_rate_num = 30000; fp.frame_rate_den = 1001;
+    }
+    else { /* try 1/fps, but libfame will probably go to PAL */
+      fp.frame_rate_num = (int)(fps + 0.5); fp.frame_rate_den = 1;
+      printf("dxr3enc: trying to set mpeg output framerate to %d Hz\n",
+             fp.frame_rate_num);
+    }
+    object = fame_get_object (fc, "profile/mpeg1");
+    fame_init (fc, &fp, buffer, DEFAULT_BUFFER_SIZE);
+    
+  }
+#endif
+#if USE_FFMPEG
+  if (!avc)
+  {
+    avc = malloc(sizeof(AVCodecContext));
+    memset(avc, 0, sizeof(AVCodecContext));
+    buffer = (unsigned char *) malloc (DEFAULT_BUFFER_SIZE);
+
+    avc->bit_rate = 0; /* using fixed quantizer */
+    avc->width = width;
+    avc->height = oheight;
+    avc->gop_size = 0; /* only intra */
+    avc->pix_fmt = PIX_FMT_YUV420P;
+    avc->flags = CODEC_FLAG_QSCALE; /* fix qscale = quality */
+    avc->quality = 2; /* 1-31 highest-lowest quality */
+    /* start guessing the framerate */
+    fps = 90000.0/frame->vo_frame.duration;
+    avc->frame_rate = (int)(fps*FRAME_RATE_BASE + 0.5);
+
+    if (avcodec_open(avc, avcodec)) {
+      printf("dxr3enc: error opening avcodec. Aborting...\n");
+      exit(1); /* can't think of a cleaner way at this point */
+    }
+  }
+#endif
+
+  if(this->aspectratio!=aspect)
+    dxr3_set_property (this_gen,VO_PROP_ASPECT_RATIO, aspect);
+
+#if USE_MPEG_BUFFER
+  /* safeguard */
+  frame->mpeg_size = 0;
+#endif
+}
+
+static void dxr3_frame_copy(vo_frame_t *frame_gen, uint8_t **src)
+{
+  int size, i, j, hoffset, w2;
+  dxr3_frame_t *frame = (dxr3_frame_t *) frame_gen;
+  dxr3_driver_t *this = frame->vo_instance;
+  uint8_t *y, *u, *v, *yuy2;
+
+  if (frame_gen->bad_frame)
+    return;
+
+  if (frame->copy_calls == frame->height/16) {
+    /* shouldn't happen */
+    printf("dxr3enc: Internal error. Too many calls to dxr3_frame_copy (%d)\n", 
+           frame->copy_calls);
+    return; 
+  }
+
+  if (frame_gen->format == IMGFMT_YV12) {
+    y = frame->real_base[0];
+    u = frame->real_base[1];
+    v = frame->real_base[2];
+  }
+  else { /* must be YUY2 */
+    if (! (this->out[0] && this->out[1] && this->out[2]) ) {
+      printf("dxr3enc: Internal error. Internal YV12 buffer not created.\n");
+      return;
+    }
+    /* need conversion */
+    hoffset = (this->oheight - frame->height)/2; 
+    y = this->out[0] + frame->width*(hoffset + frame->copy_calls*16);
+    u = this->out[1] + frame->width/2*(hoffset/2 + frame->copy_calls*8);
+    v = this->out[2] + frame->width/2*(hoffset/2 + frame->copy_calls*8);
+    yuy2 = src[0];
+    w2 = frame->width/2;
+    /* we get 16 lines each time */
+    for (i=0; i<16; i+=2) {
+      for (j=0; j<w2; j++) {
+        /* packed YUV 422 is: Y[i] U[i] Y[i+1] V[i] */
+        *(y++) = *(yuy2++);
+        *(u++) = *(yuy2++);
+        *(y++) = *(yuy2++);
+        *(v++) = *(yuy2++);
+      }
+      /* down sampling */
+      for (j=0; j<w2; j++) {
+        /* skip every second line for U and V */
+        *(y++) = *(yuy2++);
+        yuy2++;
+        *(y++) = *(yuy2++);
+        yuy2++;
+      }
+    }
+    /* reset for encoder */
+    y = this->out[0];
+    u = this->out[1];
+    v = this->out[2];
+  }
+
+  frame->copy_calls++;
+
+  /* frame complete yet? */
+  if (frame->copy_calls == frame->height/16) {
+#if USE_LIBFAME
+    yuv.y=y;
+    yuv.u=u;
+    yuv.v=v;
+    size = fame_encode_frame(fc, &yuv, NULL);
+    /* not sure whether libfame does bounds checking, but if we're
+     * this close to the limit there's bound to be trouble */
+    if (size >= DEFAULT_BUFFER_SIZE) {
+      printf("dxr3enc: warning, mpeg buffer too small!\n");
+      size = DEFAULT_BUFFER_SIZE;
+    }
+# if USE_MPEG_BUFFER
+    /* copy mpeg data to frame */
+    fast_memcpy(frame->mpeg, buffer, size);
+    frame->mpeg_size = size;
+# endif
+#endif
+#if USE_FFMPEG
+    avp.data[0] = y;
+    avp.data[1] = u;
+    avp.data[2] = v;
+    avp.linesize[0] = frame->width;
+    avp.linesize[1] = avp.linesize[2] = frame->width/2;
+# if USE_MPEG_BUFFER
+    size = avcodec_encode_video(avc, frame->mpeg, DEFAULT_BUFFER_SIZE, &avp);
+    frame->mpeg_size = size;
+# else
+    size = avcodec_encode_video(avc, buffer, DEFAULT_BUFFER_SIZE, &avp);
+# endif    
+#endif
+#if ! USE_MPEG_BUFFER
+    /* write to device now */
+    if (write(this->fd_video, buffer, size) < 0)
+      perror("dxr3enc: writing to video device");
+#endif
+  }
+}
+
+#define MV_COMMAND 0
+
+static void dxr3_display_frame (vo_driver_t *this_gen, vo_frame_t *frame_gen)
+{
+  char tmpstr[256]; 
+  dxr3_driver_t *this = (dxr3_driver_t*)this_gen;
+  dxr3_frame_t *frame = (dxr3_frame_t*)frame_gen;
+#if USE_MAGIC_REGISTER
+  em8300_register_t regs; 
+
+  regs.microcode_register=1; 	/* Yes, this is a MC Reg */
+  regs.reg = MV_COMMAND;
+  regs.val=6; /* Mike's mystery number :-) */
+  ioctl(this->fd_control, EM8300_IOCTL_WRITEREG, &regs);
+#endif
+#if USE_MPEG_BUFFER
+  if (this->fd_video < 0) {
+    snprintf (tmpstr, sizeof(tmpstr), "%s_mv", devname);
+    this->fd_video = open(tmpstr, O_WRONLY);
+  }
+  if (write(this->fd_video, frame->mpeg, frame->mpeg_size) < 0)
+    perror("dxr3enc: writing to video device");
+#endif
+  frame_gen->displayed (frame_gen); 
+}
+
+static void dxr3_overlay_blend (vo_driver_t *this_gen, vo_frame_t *frame_gen,
+ vo_overlay_t *overlay)
+{
+	/* dxr3_driver_t *this = (dxr3_driver_t *) this_gen; */
+	fprintf(stderr, "dxr3_vo: dummy function dxr3_overlay_blend called!\n");
+}
+
+void dxr3_exit (vo_driver_t *this_gen)
+{
+	dxr3_driver_t *this = (dxr3_driver_t *) this_gen;
+
+
+	if(this->overlay_enabled)
+		dxr3_overlay_set_mode(&this->overlay, EM8300_OVERLAY_MODE_OFF );
+	close(this->fd_control);
+}
+
+vo_driver_t *init_video_out_plugin (config_values_t *config, void *visual_gen)
+{
+	dxr3_driver_t *this;
+	char tmpstr[100];
+	char *file_out;
+
+	/*
+	* allocate plugin struct
+	*/
+
+	this = malloc (sizeof (dxr3_driver_t));
+
+	if (!this) {
+		printf ("video_out_dxr3: malloc failed\n");
+		return NULL;
+	}
+
+	memset (this, 0, sizeof(dxr3_driver_t));
+
+	this->vo_driver.get_capabilities     = dxr3_get_capabilities;
+	this->vo_driver.alloc_frame          = dxr3_alloc_frame;
+	this->vo_driver.update_frame_format  = dxr3_update_frame_format;
+	this->vo_driver.display_frame        = dxr3_display_frame;
+	this->vo_driver.overlay_blend        = dxr3_overlay_blend;
+	this->vo_driver.get_property         = dxr3_get_property;
+	this->vo_driver.set_property         = dxr3_set_property;
+	this->vo_driver.get_property_min_max = dxr3_get_property_min_max;
+	this->vo_driver.gui_data_exchange    = dxr3_gui_data_exchange;
+	this->vo_driver.exit                 = dxr3_exit;
+	this->config=config;
+	
+	/* open control device */
+	devname = config->lookup_str (config, LOOKUP_DEV, DEFAULT_DEV);
+	printf("dxr3enc: Entering video init, devname=%s.\n",devname);
+	if ((this->fd_control = open(devname, O_WRONLY)) < 0) {
+		printf("dxr3enc: Failed to open control device %s (%s)\n",
+			devname, strerror(errno));
+		return 0;
+	}
+        /* output mpeg to file instead of dxr3? */
+        file_out = config->lookup_str(config, "dxr3enc_file", "<none>");
+        if (file_out && strcmp(file_out, "<none>")) {
+		this->fd_video = open(file_out, O_WRONLY | O_CREAT);
+		if (this->fd_video < 0) {
+			perror("dxr3enc: failed to open output file");
+			return 0;
+		}
+	}
+	else {        
+	 	/* open video device */
+		snprintf (tmpstr, sizeof(tmpstr), "%s_mv", devname);
+		if ((this->fd_video = open (tmpstr, O_WRONLY | O_SYNC )) < 0) {
+			printf("dxr3enc: failed to open video device %s (%s)\n",
+				tmpstr, strerror(errno));
+			return 0;
+		}
+#if USE_MPEG_BUFFER
+	        /* we have to close now and open the first time we get 
+		 * to display_frame. weird... */
+	        close(this->fd_video);
+        	this->fd_video = -1;
+#endif
+	}
+	gather_screen_vars(this, visual_gen);
+	
+	/* default values */
+	this->overlay_enabled = 0;
+	this->aspectratio = ASPECT_FULL;
+
+	dxr3_read_config(this);
+	
+	if (this->overlay_enabled) {
+		dxr3_get_keycolor(this);
+		dxr3_overlay_buggy_preinit(&this->overlay, this->fd_control);
+	}
+
+#if USE_LIBFAME
+	/* fame context */
+	fc = 0;
+#endif
+#if USE_FFMPEG
+	avc = 0;
+	avcodec_init();
+	/* this register_all() is not really needed, but it gives us a good
+         * way to sniff out bad libavcodecs */
+	avcodec_register_all();
+	avcodec = avcodec_find_encoder(CODEC_ID_MPEG1VIDEO);
+	if (! avcodec) {
+		/* tell tale sign of bad libavcodec */
+        	printf("dxr3enc: can't find mpeg1 encoder! libavcodec is rotten!\n");
+		return 0;
+	}
+#endif
+	return &this->vo_driver;
+}
+
+static vo_info_t vo_info_dxr3 = {
+  2, /* api version */
+  "dxr3enc",
+  "xine mpeg1 encoding video output plugin for dxr3 cards",
+  VISUAL_TYPE_X11,
+  10  /* priority */
+};
+
+vo_info_t *get_video_out_plugin_info()
+{
+	return &vo_info_dxr3;
+}
+