Ejemplo n.º 1
0
static GstCaps *
_set_caps_features_with_passthrough (const GstCaps * caps,
    const gchar * feature_name, GstCapsFeatures * passthrough)
{
  guint i, j, m, n;
  GstCaps *tmp;

  tmp = gst_caps_new_empty ();

  n = gst_caps_get_size (caps);
  for (i = 0; i < n; i++) {
    GstCapsFeatures *features, *orig_features;
    GstStructure *s = gst_caps_get_structure (caps, i);

    orig_features = gst_caps_get_features (caps, i);
    features = gst_caps_features_new (feature_name, NULL);

    if (gst_caps_features_is_any (orig_features)) {
      /* if we have any features, we add both the features with and without @passthrough */
      gst_caps_append_structure_full (tmp, gst_structure_copy (s),
          gst_caps_features_copy (features));

      m = gst_caps_features_get_size (passthrough);
      for (j = 0; j < m; j++) {
        const gchar *feature = gst_caps_features_get_nth (passthrough, j);

        /* if we already have the features */
        if (gst_caps_features_contains (features, feature))
          continue;

        gst_caps_features_add (features, feature);
      }
    } else {
      m = gst_caps_features_get_size (orig_features);
      for (j = 0; j < m; j++) {
        const gchar *feature = gst_caps_features_get_nth (orig_features, j);

        /* if we already have the features */
        if (gst_caps_features_contains (features, feature))
          continue;

        if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY) == 0)
          continue;

        if (gst_caps_features_contains (passthrough, feature)) {
          gst_caps_features_add (features, feature);
        }
      }
    }

    gst_caps_append_structure_full (tmp, gst_structure_copy (s), features);
  }

  return tmp;
}
Ejemplo n.º 2
0
static GstCaps *
gst_gl_mixer_set_caps_features (const GstCaps * caps,
                                const gchar * feature_name)
{
    GstCaps *tmp = gst_caps_copy (caps);
    guint n = gst_caps_get_size (tmp);
    guint i = 0;

    for (i = 0; i < n; i++) {
        GstCapsFeatures *features = gst_caps_get_features (tmp, i);
        if (features) {
            guint n_f = gst_caps_features_get_size (features);
            guint j = 0;
            for (j = 0; j < n_f; j++) {
                gst_caps_features_remove_id (features,
                                             gst_caps_features_get_nth_id (features, j));
            }
        }

        gst_caps_features_add (features, feature_name);
        gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
    }

    return tmp;
}
Ejemplo n.º 3
0
/**
 * gst_caps_features_new_valist:
 * @feature1: name of first feature to set
 * @varargs: variable argument list
 *
 * Creates a new #GstCapsFeatures with the given features.
 *
 * Free-function: gst_caps_features_free
 *
 * Returns: (transfer full): a new, empty #GstCapsFeatures
 *
 * Since: 1.2
 */
GstCapsFeatures *
gst_caps_features_new_valist (const gchar * feature1, va_list varargs)
{
  GstCapsFeatures *features;

  g_return_val_if_fail (feature1 != NULL, NULL);

  features = gst_caps_features_new_empty ();

  while (feature1) {
    gst_caps_features_add (features, feature1);
    feature1 = va_arg (varargs, const gchar *);
  }

  return features;
}
GstCaps *
gst_gl_overlay_compositor_add_caps (GstCaps * caps)
{
  GstCaps *composition_caps;
  int i;

  composition_caps = gst_caps_copy (caps);

  for (i = 0; i < gst_caps_get_size (composition_caps); i++) {
    GstCapsFeatures *f = gst_caps_get_features (composition_caps, i);
    gst_caps_features_add (f,
        GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
  }

  caps = gst_caps_merge (composition_caps, caps);

  return caps;
}
/**
 * gst_dvbsub_overlay_add_feature_and_intersect:
 *
 * Creates a new #GstCaps containing the (given caps +
 * given caps feature) + (given caps intersected by the
 * given filter).
 *
 * Returns: the new #GstCaps
 */
static GstCaps *
gst_dvbsub_overlay_add_feature_and_intersect (GstCaps * caps,
    const gchar * feature, GstCaps * filter)
{
  int i, caps_size;
  GstCaps *new_caps;

  new_caps = gst_caps_copy (caps);

  caps_size = gst_caps_get_size (new_caps);
  for (i = 0; i < caps_size; i++) {
    GstCapsFeatures *features = gst_caps_get_features (new_caps, i);
    if (!gst_caps_features_is_any (features)) {
      gst_caps_features_add (features, feature);
    }
  }

  gst_caps_append (new_caps, gst_caps_intersect_full (caps,
          filter, GST_CAPS_INTERSECT_FIRST));

  return new_caps;
}
static GstCaps *
_set_caps_features_with_passthrough (const GstCaps * caps,
    const gchar * feature_name, GstCapsFeatures * passthrough)
{
  guint i, j, m, n;
  GstCaps *tmp;

  tmp = gst_caps_copy (caps);

  n = gst_caps_get_size (caps);
  for (i = 0; i < n; i++) {
    GstCapsFeatures *features, *orig_features;

    orig_features = gst_caps_get_features (caps, i);
    features = gst_caps_features_new (feature_name, NULL);

    m = gst_caps_features_get_size (orig_features);
    for (j = 0; j < m; j++) {
      const gchar *feature = gst_caps_features_get_nth (orig_features, j);

      /* if we already have the features */
      if (gst_caps_features_contains (features, feature))
        continue;

      if (g_strcmp0 (feature, GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY) == 0)
        continue;

      if (passthrough && gst_caps_features_contains (passthrough, feature)) {
        gst_caps_features_add (features, feature);
      }
    }

    gst_caps_set_features (tmp, i, features);
  }

  return tmp;
}
Ejemplo n.º 7
0
GstCaps *
gst_gl_caps_replace_all_caps_features (const GstCaps * caps,
    const gchar * feature_name)
{
  GstCaps *tmp = gst_caps_copy (caps);
  guint n = gst_caps_get_size (tmp);
  guint i = 0;

  for (i = 0; i < n; i++) {
    GstCapsFeatures *features = gst_caps_get_features (tmp, i);
    if (features) {
      guint n_f = gst_caps_features_get_size (features);
      guint j = 0;
      for (j = 0; j < n_f; j++) {
        gst_caps_features_remove_id (features,
            gst_caps_features_get_nth_id (features, j));
      }
    }

    gst_caps_features_add (features, feature_name);
  }

  return tmp;
}
Ejemplo n.º 8
0
/**
 * gst_caps_features_from_string:
 * @features: a string representation of a #GstCapsFeatures.
 *
 * Creates a #GstCapsFeatures from a string representation.
 *
 * Free-function: gst_caps_features_free
 *
 * Returns: (transfer full): a new #GstCapsFeatures or NULL when the string could
 *     not be parsed. Free with gst_caps_features_free() after use.
 *
 * Since: 1.2
 */
GstCapsFeatures *
gst_caps_features_from_string (const gchar * features)
{
  GstCapsFeatures *ret;
  gboolean escape = FALSE;
  const gchar *features_orig = features;
  const gchar *feature;

  ret = gst_caps_features_new_empty ();

  if (!features || *features == '\0')
    return ret;

  if (strcmp (features, "ANY") == 0) {
    ret->is_any = TRUE;
    return ret;
  }

  /* Skip trailing spaces */
  while (*features == ' ')
    features++;

  feature = features;
  while (TRUE) {
    gchar c = *features;

    if (c == '\\') {
      escape = TRUE;
      features++;
      continue;
    } else if ((!escape && c == ',') || c == '\0') {
      guint len = features - feature + 1;
      gchar *tmp;
      gchar *p;

      if (len == 1) {
        g_warning ("Failed deserialize caps features '%s'", features_orig);
        gst_caps_features_free (ret);
        return NULL;
      }

      tmp = g_malloc (len);
      memcpy (tmp, feature, len - 1);
      tmp[len - 1] = '\0';

      p = tmp + len - 1;
      while (*p == ' ') {
        *p = '\0';
        p--;
      }

      if (strstr (tmp, " ") != NULL || *tmp == '\0') {
        g_free (tmp);
        g_warning ("Failed deserialize caps features '%s'", features_orig);
        gst_caps_features_free (ret);
        return NULL;
      }

      gst_caps_features_add (ret, tmp);
      g_free (tmp);

      if (c == '\0')
        break;

      /* Skip to the next value */
      features++;
      while (*features == ' ')
        features++;
      feature = features;
    } else {
      escape = FALSE;
      features++;
    }
  }

  return ret;
}
/* only negotiate/query video overlay composition support for now */
static gboolean
gst_dvbsub_overlay_negotiate (GstDVBSubOverlay * overlay, GstCaps * caps)
{
  gboolean ret;
  gboolean attach = FALSE;
  gboolean caps_has_meta = TRUE;
  GstCapsFeatures *f;

  GST_DEBUG_OBJECT (overlay, "performing negotiation");

  if (!caps) {
    caps = gst_pad_get_current_caps (overlay->srcpad);
  } else {
    gst_caps_ref (caps);
  }

  if (!caps || gst_caps_is_empty (caps))
    goto no_format;

  /* Try to use the overlay meta if possible */
  f = gst_caps_get_features (caps, 0);

  /* if the caps doesn't have the overlay meta, we query if downstream
   * accepts it before trying the version without the meta
   * If upstream already is using the meta then we can only use it */
  if (!f
      || !gst_caps_features_contains (f,
          GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION)) {
    GstCaps *overlay_caps;
    GstCaps *peercaps;

    /* In this case we added the meta, but we can work without it
     * so preserve the original caps so we can use it as a fallback */
    overlay_caps = gst_caps_copy (caps);

    f = gst_caps_get_features (overlay_caps, 0);
    gst_caps_features_add (f,
        GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);

    /* FIXME: We should probably check if downstream *prefers* the
     * overlay meta, and only enforce usage of it if we can't handle
     * the format ourselves and thus would have to drop the overlays.
     * Otherwise we should prefer what downstream wants here.
     */
    peercaps = gst_pad_peer_query_caps (overlay->srcpad, NULL);
    caps_has_meta = gst_caps_can_intersect (peercaps, overlay_caps);
    gst_caps_unref (peercaps);

    GST_DEBUG_OBJECT (overlay, "Downstream accepts the overlay meta: %d",
        caps_has_meta);
    if (caps_has_meta) {
      gst_caps_unref (caps);
      caps = overlay_caps;

    } else {
      /* fallback to the original */
      gst_caps_unref (overlay_caps);
      caps_has_meta = FALSE;
    }

  }
  GST_DEBUG_OBJECT (overlay, "Using caps %" GST_PTR_FORMAT, caps);
  ret = gst_pad_set_caps (overlay->srcpad, caps);

  if (ret) {
    GstQuery *query;

    /* find supported meta */
    query = gst_query_new_allocation (caps, FALSE);

    if (!gst_pad_peer_query (overlay->srcpad, query)) {
      /* no problem, we use the query defaults */
      GST_DEBUG_OBJECT (overlay, "ALLOCATION query failed");
    }

    if (caps_has_meta && gst_query_find_allocation_meta (query,
            GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, NULL))
      attach = TRUE;

    overlay->attach_compo_to_buffer = attach;

    gst_query_unref (query);
  }
  gst_caps_unref (caps);

  return ret;

no_format:
  {
    if (caps)
      gst_caps_unref (caps);
    return FALSE;
  }
}
/* Based on gstbasetextoverlay.c */
static gboolean
gst_overlay_composition_negotiate (GstOverlayComposition * self, GstCaps * caps)
{
  gboolean upstream_has_meta = FALSE;
  gboolean caps_has_meta = FALSE;
  gboolean alloc_has_meta = FALSE;
  gboolean attach = FALSE;
  gboolean ret = TRUE;
  guint width, height;
  GstCapsFeatures *f;
  GstCaps *overlay_caps;
  GstQuery *query;
  guint alloc_index;

  GST_DEBUG_OBJECT (self, "performing negotiation");

  /* Clear any pending reconfigure to avoid negotiating twice */
  gst_pad_check_reconfigure (self->srcpad);

  self->window_width = self->window_height = 0;

  if (!caps)
    caps = gst_pad_get_current_caps (self->sinkpad);
  else
    gst_caps_ref (caps);

  if (!caps || gst_caps_is_empty (caps))
    goto no_format;

  /* Check if upstream caps have meta */
  if ((f = gst_caps_get_features (caps, 0))) {
    upstream_has_meta = gst_caps_features_contains (f,
        GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);
  }

  /* Initialize dimensions */
  width = self->info.width;
  height = self->info.height;

  if (upstream_has_meta) {
    overlay_caps = gst_caps_ref (caps);
  } else {
    GstCaps *peercaps;

    /* BaseTransform requires caps for the allocation query to work */
    overlay_caps = gst_caps_copy (caps);
    f = gst_caps_get_features (overlay_caps, 0);
    gst_caps_features_add (f,
        GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION);

    /* Then check if downstream accept overlay composition in caps */
    /* FIXME: We should probably check if downstream *prefers* the
     * overlay meta, and only enforce usage of it if we can't handle
     * the format ourselves and thus would have to drop the overlays.
     * Otherwise we should prefer what downstream wants here.
     */
    peercaps = gst_pad_peer_query_caps (self->srcpad, overlay_caps);
    caps_has_meta = !gst_caps_is_empty (peercaps);
    gst_caps_unref (peercaps);

    GST_DEBUG_OBJECT (self, "caps have overlay meta %d", caps_has_meta);
  }

  if (upstream_has_meta || caps_has_meta) {
    /* Send caps immediatly, it's needed by GstBaseTransform to get a reply
     * from allocation query */
    ret = gst_pad_set_caps (self->srcpad, overlay_caps);

    /* First check if the allocation meta has compositon */
    query = gst_query_new_allocation (overlay_caps, FALSE);

    if (!gst_pad_peer_query (self->srcpad, query)) {
      /* no problem, we use the query defaults */
      GST_DEBUG_OBJECT (self, "ALLOCATION query failed");

      /* In case we were flushing, mark reconfigure and fail this method,
       * will make it retry */
      if (GST_PAD_IS_FLUSHING (self->srcpad))
        ret = FALSE;
    }

    alloc_has_meta = gst_query_find_allocation_meta (query,
        GST_VIDEO_OVERLAY_COMPOSITION_META_API_TYPE, &alloc_index);

    GST_DEBUG_OBJECT (self, "sink alloc has overlay meta %d", alloc_has_meta);

    if (alloc_has_meta) {
      const GstStructure *params;

      gst_query_parse_nth_allocation_meta (query, alloc_index, &params);
      if (params) {
        if (gst_structure_get (params, "width", G_TYPE_UINT, &width,
                "height", G_TYPE_UINT, &height, NULL)) {
          GST_DEBUG_OBJECT (self, "received window size: %dx%d", width, height);
          g_assert (width != 0 && height != 0);
        }
      }
    }

    gst_query_unref (query);
  }

  /* Update render size if needed */
  self->window_width = width;
  self->window_height = height;

  /* For backward compatbility, we will prefer bliting if downstream
   * allocation does not support the meta. In other case we will prefer
   * attaching, and will fail the negotiation in the unlikely case we are
   * force to blit, but format isn't supported. */

  if (upstream_has_meta) {
    attach = TRUE;
  } else if (caps_has_meta) {
    if (alloc_has_meta) {
      attach = TRUE;
    } else {
      /* Don't attach unless we cannot handle the format */
      attach = !can_blend_caps (caps);
    }
  } else {
    ret = can_blend_caps (caps);
  }

  /* If we attach, then pick the overlay caps */
  if (attach) {
    GST_DEBUG_OBJECT (self, "Using caps %" GST_PTR_FORMAT, overlay_caps);
    /* Caps where already sent */
  } else if (ret) {
    GST_DEBUG_OBJECT (self, "Using caps %" GST_PTR_FORMAT, caps);
    ret = gst_pad_set_caps (self->srcpad, caps);
  }

  self->attach_compo_to_buffer = attach;

  if (!ret) {
    GST_DEBUG_OBJECT (self, "negotiation failed, schedule reconfigure");
    gst_pad_mark_reconfigure (self->srcpad);
  }

  g_signal_emit (self, overlay_composition_signals[SIGNAL_CAPS_CHANGED], 0,
      caps, self->window_width, self->window_height, NULL);

  gst_caps_unref (overlay_caps);
  gst_caps_unref (caps);

  return ret;

no_format:
  {
    if (caps)
      gst_caps_unref (caps);
    gst_pad_mark_reconfigure (self->srcpad);
    return FALSE;
  }
}