Beispiel #1
0
/* dispose is called when the object has to release all links
 * to other objects */
static void
gst_object_dispose (GObject * object)
{
  GstObject *parent;

  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "dispose");

  GST_OBJECT_LOCK (object);
  if ((parent = GST_OBJECT_PARENT (object)))
    goto have_parent;
  GST_OBJECT_PARENT (object) = NULL;
  GST_OBJECT_UNLOCK (object);

  parent_class->dispose (object);

  return;

  /* ERRORS */
have_parent:
  {
    g_critical ("\nTrying to dispose object \"%s\", but it still has a "
        "parent \"%s\".\nYou need to let the parent manage the "
        "object instead of unreffing the object directly.\n",
        GST_OBJECT_NAME (object), GST_OBJECT_NAME (parent));
    GST_OBJECT_UNLOCK (object);
    /* ref the object again to revive it in this error case */
    gst_object_ref (object);
    return;
  }
}
Beispiel #2
0
/**
 * gst_object_sink:
 * @object: a #GstObject to sink
 *
 * If @object was floating, the #GST_OBJECT_FLOATING flag is removed
 * and @object is unreffed. When @object was not floating,
 * this function does nothing.
 *
 * Any newly created object has a refcount of 1 and is floating.
 * This function should be used when creating a new object to
 * symbolically 'take ownership' of @object. This done by first doing a
 * gst_object_ref() to keep a reference to @object and then gst_object_sink()
 * to remove and unref any floating references to @object.
 * Use gst_object_set_parent() to have this done for you.
 *
 * MT safe. This function grabs and releases @object lock.
 */
void
gst_object_sink (gpointer object)
{
  g_return_if_fail (GST_IS_OBJECT (object));

  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "sink");

  GST_OBJECT_LOCK (object);
  if (G_LIKELY (GST_OBJECT_IS_FLOATING (object))) {
    GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "clear floating flag");
    GST_OBJECT_FLAG_UNSET (object, GST_OBJECT_FLOATING);
    GST_OBJECT_UNLOCK (object);
    gst_object_unref (object);
  } else {
    GST_OBJECT_UNLOCK (object);
  }
}
Beispiel #3
0
/**
 * gst_object_ref_sink: (skip)
 * @object: a #GstObject to sink
 *
 * Increase the reference count of @object, and possibly remove the floating
 * reference, if @object has a floating reference.
 *
 * In other words, if the object is floating, then this call "assumes ownership"
 * of the floating reference, converting it to a normal reference by clearing
 * the floating flag while leaving the reference count unchanged. If the object
 * is not floating, then this call adds a new normal reference increasing the
 * reference count by one.
 */
gpointer
gst_object_ref_sink (gpointer object)
{
  g_return_val_if_fail (object != NULL, NULL);

#ifdef DEBUG_REFCOUNT
  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p ref_sink %d->%d",
      object, ((GObject *) object)->ref_count,
      ((GObject *) object)->ref_count + 1);
#endif
  return g_object_ref_sink (object);
}
Beispiel #4
0
/**
 * gst_object_unref:
 * @object: (type Gst.Object): a #GstObject to unreference
 *
 * Decrements the reference count on @object.  If reference count hits
 * zero, destroy @object. This function does not take the lock
 * on @object as it relies on atomic refcounting.
 *
 * The unref method should never be called with the LOCK held since
 * this might deadlock the dispose function.
 */
void
gst_object_unref (gpointer object)
{
  g_return_if_fail (object != NULL);
  g_return_if_fail (((GObject *) object)->ref_count > 0);

#ifdef DEBUG_REFCOUNT
  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p unref %d->%d", object,
      ((GObject *) object)->ref_count, ((GObject *) object)->ref_count - 1);
#endif
  g_object_unref (object);
}
/* Allocate buffer and copy image data into Y444 format */
static GstFlowReturn
daala_handle_image (GstDaalaDec * dec, od_img * img, GstVideoCodecFrame * frame)
{
  GstVideoDecoder *decoder = GST_VIDEO_DECODER (dec);
  gint width, height, stride;
  GstFlowReturn result;
  gint i, comp;
  guint8 *dest, *src;
  GstVideoFrame vframe;

  result = gst_video_decoder_allocate_output_frame (decoder, frame);

  if (G_UNLIKELY (result != GST_FLOW_OK)) {
    GST_DEBUG_OBJECT (dec, "could not get buffer, reason: %s",
        gst_flow_get_name (result));
    return result;
  }

  /* if only libdaala would allow us to give it a destination frame */
  GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, dec,
      "doing unavoidable video frame copy");

  if (G_UNLIKELY (!gst_video_frame_map (&vframe, &dec->output_state->info,
              frame->output_buffer, GST_MAP_WRITE)))
    goto invalid_frame;

  for (comp = 0; comp < 3; comp++) {
    width = GST_VIDEO_FRAME_COMP_WIDTH (&vframe, comp);
    height = GST_VIDEO_FRAME_COMP_HEIGHT (&vframe, comp);
    stride = GST_VIDEO_FRAME_COMP_STRIDE (&vframe, comp);
    dest = GST_VIDEO_FRAME_COMP_DATA (&vframe, comp);

    src = img->planes[comp].data;

    for (i = 0; i < height; i++) {
      memcpy (dest, src, width);

      dest += stride;
      src += img->planes[comp].ystride;
    }
  }
  gst_video_frame_unmap (&vframe);

  return GST_FLOW_OK;
invalid_frame:
  {
    GST_DEBUG_OBJECT (dec, "could not map video frame");
    return GST_FLOW_ERROR;
  }
}
Beispiel #6
0
static void
gst_object_init (GstObject * object)
{
  object->lock = g_mutex_new ();
  object->parent = NULL;
  object->name = NULL;
  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p new", object);

#ifndef GST_DISABLE_TRACE
  gst_alloc_trace_new (_gst_object_trace, object);
#endif

  object->flags = 0;
  GST_OBJECT_FLAG_SET (object, GST_OBJECT_FLOATING);
}
Beispiel #7
0
static void
gst_object_init (GstObject * object)
{
  g_mutex_init (&object->lock);
  object->parent = NULL;
  object->name = NULL;
  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p new", object);

#ifndef GST_DISABLE_TRACE
  _gst_alloc_trace_new (_gst_object_trace, object);
#endif

  object->flags = 0;

  object->control_rate = 100 * GST_MSECOND;
  object->last_sync = GST_CLOCK_TIME_NONE;
}
static GstClockTime
gst_test_clock_get_internal_time (GstClock * clock)
{
  GstTestClock *test_clock = GST_TEST_CLOCK (clock);
  GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);
  GstClockTime result;

  GST_OBJECT_LOCK (test_clock);

  GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
      "retrieving test clock time %" GST_TIME_FORMAT,
      GST_TIME_ARGS (priv->internal_time));
  result = priv->internal_time;

  GST_OBJECT_UNLOCK (test_clock);

  return result;
}
Beispiel #9
0
/* finalize is called when the object has to free its resources */
static void
gst_object_finalize (GObject * object)
{
  GstObject *gstobject = GST_OBJECT_CAST (object);

  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "finalize");

  g_signal_handlers_destroy (object);

  g_free (gstobject->name);
  g_mutex_clear (&gstobject->lock);

#ifndef GST_DISABLE_TRACE
  _gst_alloc_trace_free (_gst_object_trace, object);
#endif

  ((GObjectClass *) gst_object_parent_class)->finalize (object);
}
static void
gst_test_clock_set_property (GObject * object, guint property_id,
    const GValue * value, GParamSpec * pspec)
{
  GstTestClock *test_clock = GST_TEST_CLOCK (object);
  GstTestClockPrivate *priv = GST_TEST_CLOCK_GET_PRIVATE (test_clock);

  switch (property_id) {
    case PROP_START_TIME:
      priv->start_time = g_value_get_uint64 (value);
      GST_CAT_TRACE_OBJECT (GST_CAT_TEST_CLOCK, test_clock,
          "test clock start time initialized at %" GST_TIME_FORMAT,
          GST_TIME_ARGS (priv->start_time));
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
      break;
  }
}
Beispiel #11
0
/* dispose is called when the object has to release all links
 * to other objects */
static void
gst_object_dispose (GObject * object)
{
  GstObject *self = (GstObject *) object;
  GstObject *parent;

  GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "dispose");

  GST_OBJECT_LOCK (object);
  if ((parent = GST_OBJECT_PARENT (object)))
    goto have_parent;
  GST_OBJECT_PARENT (object) = NULL;
  GST_OBJECT_UNLOCK (object);

  if (self->control_bindings) {
    GList *node;

    for (node = self->control_bindings; node; node = g_list_next (node)) {
      gst_object_unparent (node->data);
    }
    g_list_free (self->control_bindings);
    self->control_bindings = NULL;
  }

  ((GObjectClass *) gst_object_parent_class)->dispose (object);

  return;

  /* ERRORS */
have_parent:
  {
    g_critical ("\nTrying to dispose object \"%s\", but it still has a "
        "parent \"%s\".\nYou need to let the parent manage the "
        "object instead of unreffing the object directly.\n",
        GST_OBJECT_NAME (object), GST_OBJECT_NAME (parent));
    GST_OBJECT_UNLOCK (object);
    /* ref the object again to revive it in this error case */
    gst_object_ref (object);
    return;
  }
}
Beispiel #12
0
/**
 * gst_object_set_parent:
 * @object: a #GstObject
 * @parent: new parent of object
 *
 * Sets the parent of @object to @parent. The object's reference count will
 * be incremented, and any floating reference will be removed (see gst_object_sink()).
 *
 * This function causes the parent-set signal to be emitted when the parent
 * was successfully set.
 *
 * Returns: TRUE if @parent could be set or FALSE when @object
 * already had a parent or @object and @parent are the same.
 *
 * MT safe. Grabs and releases @object's LOCK.
 */
gboolean
gst_object_set_parent (GstObject * object, GstObject * parent)
{
  g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
  g_return_val_if_fail (GST_IS_OBJECT (parent), FALSE);
  g_return_val_if_fail (object != parent, FALSE);

  GST_CAT_DEBUG_OBJECT (GST_CAT_REFCOUNTING, object,
      "set parent (ref and sink)");

  GST_OBJECT_LOCK (object);
  if (G_UNLIKELY (object->parent != NULL))
    goto had_parent;

  /* sink object, we don't call our own function because we don't
   * need to release/acquire the lock needlessly or touch the refcount
   * in the floating case. */
  object->parent = parent;
  if (G_LIKELY (GST_OBJECT_IS_FLOATING (object))) {
    GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object,
        "unsetting floating flag");
    GST_OBJECT_FLAG_UNSET (object, GST_OBJECT_FLOATING);
    GST_OBJECT_UNLOCK (object);
  } else {
    GST_OBJECT_UNLOCK (object);
    gst_object_ref (object);
  }

  g_signal_emit (object, gst_object_signals[PARENT_SET], 0, parent);

  return TRUE;

  /* ERROR handling */
had_parent:
  {
    GST_CAT_DEBUG_OBJECT (GST_CAT_REFCOUNTING, object,
        "set parent failed, object already had a parent");
    GST_OBJECT_UNLOCK (object);
    return FALSE;
  }
}
Beispiel #13
0
/**
 * gst_object_unparent:
 * @object: a #GstObject to unparent
 *
 * Clear the parent of @object, removing the associated reference.
 * This function decreases the refcount of @object.
 *
 * MT safe. Grabs and releases @object's lock.
 */
void
gst_object_unparent (GstObject * object)
{
  GstObject *parent;

  g_return_if_fail (GST_IS_OBJECT (object));

  GST_OBJECT_LOCK (object);
  parent = object->parent;

  if (G_LIKELY (parent != NULL)) {
    GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "unparent");
    object->parent = NULL;
    GST_OBJECT_UNLOCK (object);

    /* g_object_notify_by_pspec ((GObject *)object, properties[PROP_PARENT]); */

    gst_object_unref (object);
  } else {
    GST_OBJECT_UNLOCK (object);
  }
}
Beispiel #14
0
/**
 * gst_object_unparent:
 * @object: a #GstObject to unparent
 *
 * Clear the parent of @object, removing the associated reference.
 * This function decreases the refcount of @object.
 *
 * MT safe. Grabs and releases @object's lock.
 */
void
gst_object_unparent (GstObject * object)
{
  GstObject *parent;

  g_return_if_fail (GST_IS_OBJECT (object));

  GST_OBJECT_LOCK (object);
  parent = object->parent;

  if (G_LIKELY (parent != NULL)) {
    GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "unparent");
    object->parent = NULL;
    GST_OBJECT_UNLOCK (object);

    g_signal_emit (object, gst_object_signals[PARENT_UNSET], 0, parent);

    gst_object_unref (object);
  } else {
    GST_OBJECT_UNLOCK (object);
  }
}
/* Allocate buffer and copy image data into Y444 format */
static GstFlowReturn
theora_handle_image (GstTheoraDec * dec, th_ycbcr_buffer buf,
    GstVideoCodecFrame * frame)
{
  GstVideoDecoder *decoder = GST_VIDEO_DECODER (dec);
  gint width, height, stride;
  GstFlowReturn result;
  gint i, comp;
  guint8 *dest, *src;
  GstVideoFrame vframe;
  gint pic_width, pic_height;
  gint offset_x, offset_y;

  result = gst_video_decoder_allocate_output_frame (decoder, frame);

  if (G_UNLIKELY (result != GST_FLOW_OK)) {
    GST_DEBUG_OBJECT (dec, "could not get buffer, reason: %s",
        gst_flow_get_name (result));
    return result;
  }

  if (!dec->can_crop) {
    /* we need to crop the hard way */
    offset_x = dec->info.pic_x;
    offset_y = dec->info.pic_y;
    pic_width = dec->info.pic_width;
    pic_height = dec->info.pic_height;
    /* Ensure correct offsets in chroma for formats that need it
     * by rounding the offset. libtheora will add proper pixels,
     * so no need to handle them ourselves. */
    if (offset_x & 1 && dec->info.pixel_fmt != TH_PF_444)
      offset_x--;
    if (offset_y & 1 && dec->info.pixel_fmt == TH_PF_420)
      offset_y--;
  } else {
    /* copy the whole frame */
    offset_x = 0;
    offset_y = 0;
    pic_width = dec->info.frame_width;
    pic_height = dec->info.frame_height;

    if (dec->info.pic_width != dec->info.frame_width ||
        dec->info.pic_height != dec->info.frame_height ||
        dec->info.pic_x != 0 || dec->info.pic_y != 0) {
      GstVideoMeta *vmeta;
      GstVideoCropMeta *cmeta;

      vmeta = gst_buffer_get_video_meta (frame->output_buffer);
      /* If the buffer pool didn't add the meta already
       * we add it ourselves here */
      if (!vmeta)
        vmeta = gst_buffer_add_video_meta (frame->output_buffer,
            GST_VIDEO_FRAME_FLAG_NONE,
            dec->output_state->info.finfo->format,
            dec->info.frame_width, dec->info.frame_height);

      /* Just to be sure that the buffer pool doesn't do something
       * completely weird and we would crash later
       */
      g_assert (vmeta->format == dec->output_state->info.finfo->format);
      g_assert (vmeta->width == dec->info.frame_width);
      g_assert (vmeta->height == dec->info.frame_height);

      cmeta = gst_buffer_add_video_crop_meta (frame->output_buffer);

      /* we can do things slightly more efficient when we know that
       * downstream understands clipping */
      cmeta->x = dec->info.pic_x;
      cmeta->y = dec->info.pic_y;
      cmeta->width = dec->info.pic_width;
      cmeta->height = dec->info.pic_height;
    }
  }

  /* if only libtheora would allow us to give it a destination frame */
  GST_CAT_TRACE_OBJECT (GST_CAT_PERFORMANCE, dec,
      "doing unavoidable video frame copy");

  if (G_UNLIKELY (!gst_video_frame_map (&vframe, &dec->output_state->info,
              frame->output_buffer, GST_MAP_WRITE)))
    goto invalid_frame;

  for (comp = 0; comp < 3; comp++) {
    width =
        GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (vframe.info.finfo, comp, pic_width);
    height =
        GST_VIDEO_FORMAT_INFO_SCALE_HEIGHT (vframe.info.finfo, comp,
        pic_height);
    stride = GST_VIDEO_FRAME_COMP_STRIDE (&vframe, comp);
    dest = GST_VIDEO_FRAME_COMP_DATA (&vframe, comp);

    src = buf[comp].data;
    src += ((height == pic_height) ? offset_y : offset_y / 2)
        * buf[comp].stride;
    src += (width == pic_width) ? offset_x : offset_x / 2;

    for (i = 0; i < height; i++) {
      memcpy (dest, src, width);

      dest += stride;
      src += buf[comp].stride;
    }
  }
  gst_video_frame_unmap (&vframe);

  return GST_FLOW_OK;
invalid_frame:
  {
    GST_DEBUG_OBJECT (dec, "could not map video frame");
    return GST_FLOW_ERROR;
  }
}
Beispiel #16
0
static GstFlowReturn
gst_ffmpegauddec_handle_frame (GstAudioDecoder * decoder, GstBuffer * inbuf)
{
  GstFFMpegAudDec *ffmpegdec;
  GstFFMpegAudDecClass *oclass;
  guint8 *data, *bdata;
  GstMapInfo map;
  gint size, bsize, len, have_data;
  GstFlowReturn ret = GST_FLOW_OK;
  gboolean do_padding, is_header;

  ffmpegdec = (GstFFMpegAudDec *) decoder;

  if (G_UNLIKELY (!ffmpegdec->opened))
    goto not_negotiated;

  if (inbuf == NULL) {
    gst_ffmpegauddec_drain (ffmpegdec);
    return GST_FLOW_OK;
  }

  inbuf = gst_buffer_ref (inbuf);
  is_header = GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_HEADER);

  oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));

  GST_LOG_OBJECT (ffmpegdec,
      "Received new data of size %" G_GSIZE_FORMAT ", offset:%" G_GUINT64_FORMAT
      ", ts:%" GST_TIME_FORMAT ", dur:%" GST_TIME_FORMAT,
      gst_buffer_get_size (inbuf), GST_BUFFER_OFFSET (inbuf),
      GST_TIME_ARGS (GST_BUFFER_PTS (inbuf)),
      GST_TIME_ARGS (GST_BUFFER_DURATION (inbuf)));

  /* workarounds, functions write to buffers:
   *  libavcodec/svq1.c:svq1_decode_frame writes to the given buffer.
   *  libavcodec/svq3.c:svq3_decode_slice_header too.
   * ffmpeg devs know about it and will fix it (they said). */
  if (oclass->in_plugin->id == AV_CODEC_ID_SVQ1 ||
      oclass->in_plugin->id == AV_CODEC_ID_SVQ3) {
    inbuf = gst_buffer_make_writable (inbuf);
  }

  gst_buffer_map (inbuf, &map, GST_MAP_READ);

  bdata = map.data;
  bsize = map.size;

  if (bsize > 0 && (!GST_MEMORY_IS_ZERO_PADDED (map.memory)
          || (map.maxsize - map.size) < FF_INPUT_BUFFER_PADDING_SIZE)) {
    /* add padding */
    if (ffmpegdec->padded_size < bsize + FF_INPUT_BUFFER_PADDING_SIZE) {
      ffmpegdec->padded_size = bsize + FF_INPUT_BUFFER_PADDING_SIZE;
      ffmpegdec->padded = g_realloc (ffmpegdec->padded, ffmpegdec->padded_size);
      GST_LOG_OBJECT (ffmpegdec, "resized padding buffer to %d",
          ffmpegdec->padded_size);
    }
    GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
        "Copy input to add padding");
    memcpy (ffmpegdec->padded, bdata, bsize);
    memset (ffmpegdec->padded + bsize, 0, FF_INPUT_BUFFER_PADDING_SIZE);

    bdata = ffmpegdec->padded;
    do_padding = TRUE;
  } else {
    do_padding = FALSE;
  }

  do {
    guint8 tmp_padding[FF_INPUT_BUFFER_PADDING_SIZE];

    data = bdata;
    size = bsize;

    if (do_padding) {
      /* add temporary padding */
      GST_CAT_TRACE_OBJECT (CAT_PERFORMANCE, ffmpegdec,
          "Add temporary input padding");
      memcpy (tmp_padding, data + size, FF_INPUT_BUFFER_PADDING_SIZE);
      memset (data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
    }

    /* decode a frame of audio now */
    len = gst_ffmpegauddec_frame (ffmpegdec, data, size, &have_data, &ret);

    if (do_padding) {
      memcpy (data + size, tmp_padding, FF_INPUT_BUFFER_PADDING_SIZE);
    }

    if (ret != GST_FLOW_OK) {
      GST_LOG_OBJECT (ffmpegdec, "breaking because of flow ret %s",
          gst_flow_get_name (ret));
      /* bad flow return, make sure we discard all data and exit */
      bsize = 0;
      break;
    }

    if (len == 0 && have_data == 0) {
      /* nothing was decoded, this could be because no data was available or
       * because we were skipping frames.
       * If we have no context we must exit and wait for more data, we keep the
       * data we tried. */
      GST_LOG_OBJECT (ffmpegdec, "Decoding didn't return any data, breaking");
      break;
    } else if (len < 0) {
      /* a decoding error happened, we must break and try again with next data. */
      GST_LOG_OBJECT (ffmpegdec, "Decoding error, breaking");
      bsize = 0;
      break;
    }
    /* prepare for the next round, for codecs with a context we did this
     * already when using the parser. */
    bsize -= len;
    bdata += len;

    do_padding = TRUE;

    GST_LOG_OBJECT (ffmpegdec, "Before (while bsize>0).  bsize:%d , bdata:%p",
        bsize, bdata);
  } while (bsize > 0);

  gst_buffer_unmap (inbuf, &map);
  gst_buffer_unref (inbuf);

  if (ffmpegdec->outbuf)
    ret =
        gst_audio_decoder_finish_frame (GST_AUDIO_DECODER (ffmpegdec),
        ffmpegdec->outbuf, 1);
  else if (len < 0 || is_header)
    ret =
        gst_audio_decoder_finish_frame (GST_AUDIO_DECODER (ffmpegdec), NULL, 1);
  ffmpegdec->outbuf = NULL;

  if (bsize > 0) {
    GST_DEBUG_OBJECT (ffmpegdec, "Dropping %d bytes of data", bsize);
  }

  return ret;

  /* ERRORS */
not_negotiated:
  {
    oclass = (GstFFMpegAudDecClass *) (G_OBJECT_GET_CLASS (ffmpegdec));
    GST_ELEMENT_ERROR (ffmpegdec, CORE, NEGOTIATION, (NULL),
        ("avdec_%s: input format was not set before data start",
            oclass->in_plugin->name));
    return GST_FLOW_NOT_NEGOTIATED;
  }
}