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C++ GST_OBJECT_UNLOCK函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中GST_OBJECT_UNLOCK函数的典型用法代码示例。如果您正苦于以下问题:C++ GST_OBJECT_UNLOCK函数的具体用法?C++ GST_OBJECT_UNLOCK怎么用?C++ GST_OBJECT_UNLOCK使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了GST_OBJECT_UNLOCK函数的20个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: gst_wildmidi_parse_song

static GstFlowReturn
gst_wildmidi_parse_song (GstWildmidi * wildmidi)
{
  struct _WM_Info *info;
  GstCaps *outcaps;
  guint8 *data;
  guint size;

  GST_DEBUG_OBJECT (wildmidi, "Parsing song");

  size = gst_adapter_available (wildmidi->adapter);
  data = gst_adapter_take (wildmidi->adapter, size);

  /* this method takes our memory block */
  GST_OBJECT_LOCK (wildmidi);
  wildmidi->song = WildMidi_OpenBuffer (data, size);

  if (!wildmidi->song)
    goto open_failed;

#ifdef HAVE_WILDMIDI_0_2_2
  WildMidi_LoadSamples (wildmidi->song);
#endif

#ifdef HAVE_WILDMIDI_0_2_2
  WildMidi_SetOption (wildmidi->song, WM_MO_LINEAR_VOLUME,
      wildmidi->linear_volume);
  WildMidi_SetOption (wildmidi->song, WM_MO_EXPENSIVE_INTERPOLATION,
      wildmidi->high_quality);
#else
  WildMidi_SetOption (wildmidi->song, WM_MO_LOG_VOLUME,
      !wildmidi->linear_volume);
  WildMidi_SetOption (wildmidi->song, WM_MO_ENHANCED_RESAMPLING,
      wildmidi->high_quality);
#endif

  info = WildMidi_GetInfo (wildmidi->song);
  GST_OBJECT_UNLOCK (wildmidi);

  wildmidi->o_len = info->approx_total_samples;

  outcaps = gst_caps_copy (gst_pad_get_pad_template_caps (wildmidi->srcpad));
  gst_pad_set_caps (wildmidi->srcpad, outcaps);
  gst_caps_unref (outcaps);

  /* we keep an internal segment in samples */
  gst_segment_init (wildmidi->o_segment, GST_FORMAT_DEFAULT);

  gst_pad_push_event (wildmidi->srcpad,
      gst_wildmidi_get_new_segment_event (wildmidi, GST_FORMAT_TIME));

  GST_DEBUG_OBJECT (wildmidi, "Parsing song done");

  return GST_FLOW_OK;

  /* ERRORS */
open_failed:
  {
    GST_OBJECT_UNLOCK (wildmidi);
    GST_ELEMENT_ERROR (wildmidi, STREAM, DECODE, (NULL),
        ("Unable to parse midi data"));
    return GST_FLOW_ERROR;
  }
}
开发者ID:Distrotech,项目名称:gst-plugins-bad,代码行数:64,代码来源:gstwildmidi.c


示例2: gst_dicetv_transform

static GstFlowReturn
gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
{
  GstDiceTV *filter = GST_DICETV (trans);
  guint32 *src, *dest;
  gint i, map_x, map_y, map_i, base, dx, dy, di;
  gint video_width, g_cube_bits, g_cube_size;
  gint g_map_height, g_map_width;
  GstFlowReturn ret = GST_FLOW_OK;
  GstClockTime timestamp, stream_time;
  const guint8 *dicemap;

  src = (guint32 *) GST_BUFFER_DATA (in);
  dest = (guint32 *) GST_BUFFER_DATA (out);

  timestamp = GST_BUFFER_TIMESTAMP (in);
  stream_time =
      gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);

  GST_DEBUG_OBJECT (filter, "sync to %" GST_TIME_FORMAT,
      GST_TIME_ARGS (timestamp));

  if (GST_CLOCK_TIME_IS_VALID (stream_time))
    gst_object_sync_values (G_OBJECT (filter), stream_time);

  GST_OBJECT_LOCK (filter);
  video_width = filter->width;
  g_cube_bits = filter->g_cube_bits;
  g_cube_size = filter->g_cube_size;
  g_map_height = filter->g_map_height;
  g_map_width = filter->g_map_width;

  dicemap = filter->dicemap;

  map_i = 0;
  for (map_y = 0; map_y < g_map_height; map_y++) {
    for (map_x = 0; map_x < g_map_width; map_x++) {
      base = (map_y << g_cube_bits) * video_width + (map_x << g_cube_bits);

      switch (dicemap[map_i]) {
        case DICE_UP:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + dy * video_width;
            for (dx = 0; dx < g_cube_size; dx++) {
              dest[i] = src[i];
              i++;
            }
          }
          break;
        case DICE_LEFT:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + dy * video_width;

            for (dx = 0; dx < g_cube_size; dx++) {
              di = base + (dx * video_width) + (g_cube_size - dy - 1);
              dest[di] = src[i];
              i++;
            }
          }
          break;
        case DICE_DOWN:
          for (dy = 0; dy < g_cube_size; dy++) {
            di = base + dy * video_width;
            i = base + (g_cube_size - dy - 1) * video_width + g_cube_size;
            for (dx = 0; dx < g_cube_size; dx++) {
              i--;
              dest[di] = src[i];
              di++;
            }
          }
          break;
        case DICE_RIGHT:
          for (dy = 0; dy < g_cube_size; dy++) {
            i = base + (dy * video_width);
            for (dx = 0; dx < g_cube_size; dx++) {
              di = base + dy + (g_cube_size - dx - 1) * video_width;
              dest[di] = src[i];
              i++;
            }
          }
          break;
        default:
          g_assert_not_reached ();
          break;
      }
      map_i++;
    }
  }
  GST_OBJECT_UNLOCK (filter);

  return ret;
}
开发者ID:ChinnaSuhas,项目名称:ossbuild,代码行数:92,代码来源:gstdice.c


示例3: gst_shm_sink_render

static GstFlowReturn
gst_shm_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
  GstShmSink *self = GST_SHM_SINK (bsink);
  int rv = 0;
  GstMapInfo map;
  gboolean need_new_memory = FALSE;
  GstFlowReturn ret = GST_FLOW_OK;
  GstMemory *memory = NULL;
  GstBuffer *sendbuf = NULL;

  GST_OBJECT_LOCK (self);
  while (self->wait_for_connection && !self->clients) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock)
      goto flushing;
  }

  while (!gst_shm_sink_can_render (self, GST_BUFFER_TIMESTAMP (buf))) {
    g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
    if (self->unlock)
      goto flushing;
  }


  if (gst_buffer_n_memory (buf) > 1) {
    GST_LOG_OBJECT (self, "Buffer %p has %d GstMemory, we only support a single"
        " one, need to do a memcpy", buf, gst_buffer_n_memory (buf));
    need_new_memory = TRUE;
  } else {
    memory = gst_buffer_peek_memory (buf, 0);

    if (memory->allocator != GST_ALLOCATOR (self->allocator)) {
      need_new_memory = TRUE;
      GST_LOG_OBJECT (self, "Memory in buffer %p was not allocated by "
          "%" GST_PTR_FORMAT ", will memcpy", buf, memory->allocator);
    }
  }

  if (need_new_memory) {
    if (gst_buffer_get_size (buf) > sp_writer_get_max_buf_size (self->pipe)) {
      gsize area_size = sp_writer_get_max_buf_size (self->pipe);
      GST_OBJECT_UNLOCK (self);
      GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
          ("Shared memory area is too small"),
          ("Shared memory area of size %" G_GSIZE_FORMAT " is smaller than"
              "buffer of size %" G_GSIZE_FORMAT, area_size,
              gst_buffer_get_size (buf)));
      return GST_FLOW_ERROR;
    }

    while ((memory =
            gst_shm_sink_allocator_alloc_locked (self->allocator,
                gst_buffer_get_size (buf), &self->params)) == NULL) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock)
        goto flushing;
    }

    while (self->wait_for_connection && !self->clients) {
      g_cond_wait (&self->cond, GST_OBJECT_GET_LOCK (self));
      if (self->unlock) {
        gst_memory_unref (memory);
        GST_OBJECT_UNLOCK (self);
        return GST_FLOW_FLUSHING;
      }
    }

    gst_memory_map (memory, &map, GST_MAP_WRITE);
    gst_buffer_extract (buf, 0, map.data, map.size);
    gst_memory_unmap (memory, &map);

    sendbuf = gst_buffer_new ();
    gst_buffer_copy_into (sendbuf, buf, GST_BUFFER_COPY_METADATA, 0, -1);
    gst_buffer_append_memory (sendbuf, memory);
  } else {
    sendbuf = gst_buffer_ref (buf);
  }

  gst_buffer_map (sendbuf, &map, GST_MAP_READ);
  /* Make the memory readonly as of now as we've sent it to the other side
   * We know it's not mapped for writing anywhere as we just mapped it for
   * reading
   */

  rv = sp_writer_send_buf (self->pipe, (char *) map.data, map.size, sendbuf);

  gst_buffer_unmap (sendbuf, &map);

  GST_OBJECT_UNLOCK (self);

  if (rv == 0) {
    GST_DEBUG_OBJECT (self, "No clients connected, unreffing buffer");
    gst_buffer_unref (sendbuf);
  } else if (rv == -1) {
    GST_ELEMENT_ERROR (self, STREAM, FAILED, ("Invalid allocated buffer"),
        ("The shmpipe library rejects our buffer, this is a bug"));
    ret = GST_FLOW_ERROR;
  }

//.........这里部分代码省略.........
开发者ID:Distrotech,项目名称:gst-plugins-bad,代码行数:101,代码来源:gstshmsink.c


示例4: gst_gl_mixer_sink_query

static gboolean
gst_gl_mixer_sink_query (GstAggregator * agg, GstAggregatorPad * bpad,
                         GstQuery * query)
{
    gboolean ret = FALSE;
    GstGLMixer *mix = GST_GL_MIXER (agg);
    GstGLMixerClass *mix_class = GST_GL_MIXER_GET_CLASS (mix);

    GST_TRACE ("QUERY %" GST_PTR_FORMAT, query);

    switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_CAPS:
    {
        GstCaps *filter, *caps;

        gst_query_parse_caps (query, &filter);
        caps = gst_gl_mixer_pad_sink_getcaps (GST_PAD (bpad), mix, filter);
        gst_query_set_caps_result (query, caps);
        gst_caps_unref (caps);
        ret = TRUE;
        break;
    }
    case GST_QUERY_ACCEPT_CAPS:
    {
        GstCaps *caps;

        gst_query_parse_accept_caps (query, &caps);
        ret = gst_gl_mixer_pad_sink_acceptcaps (GST_PAD (bpad), mix, caps);
        gst_query_set_accept_caps_result (query, ret);
        ret = TRUE;
        break;
    }
    case GST_QUERY_ALLOCATION:
    {
        GstQuery *decide_query = NULL;

        GST_OBJECT_LOCK (mix);
        if (G_UNLIKELY (!mix->priv->negotiated)) {
            GST_DEBUG_OBJECT (mix,
                              "not negotiated yet, can't answer ALLOCATION query");
            GST_OBJECT_UNLOCK (mix);
            return FALSE;
        }
        if ((decide_query = mix->priv->query))
            gst_query_ref (decide_query);
        GST_OBJECT_UNLOCK (mix);

        GST_DEBUG_OBJECT (mix,
                          "calling propose allocation with query %" GST_PTR_FORMAT,
                          decide_query);

        /* pass the query to the propose_allocation vmethod if any */
        ret = gst_gl_mixer_propose_allocation (mix, decide_query, query);

        if (decide_query)
            gst_query_unref (decide_query);

        GST_DEBUG_OBJECT (mix, "ALLOCATION ret %d, %" GST_PTR_FORMAT, ret, query);
        break;
    }
    case GST_QUERY_CONTEXT:
    {
        ret = gst_gl_handle_context_query ((GstElement *) mix, query,
                                           &mix->display, &mix->other_context);
        if (mix->display)
            gst_gl_display_filter_gl_api (mix->display,
                                          mix_class->supported_gl_api);
        break;
    }
    default:
        ret = GST_AGGREGATOR_CLASS (parent_class)->sink_query (agg, bpad, query);
        break;
    }

    return ret;
}
开发者ID:ego5710,项目名称:gst-plugins-bad,代码行数:76,代码来源:gstglmixer.c


示例5: fs_rtp_conference_handle_message

static void
fs_rtp_conference_handle_message (
    GstBin * bin,
    GstMessage * message)
{
  FsRtpConference *self = FS_RTP_CONFERENCE (bin);

  if (!self->rtpbin)
    goto out;

  switch (GST_MESSAGE_TYPE (message)) {
    case GST_MESSAGE_ELEMENT:
    {
      const GstStructure *s = gst_message_get_structure (message);

      /* we change the structure name and add the session ID to it */
      if (gst_structure_has_name (s, "application/x-rtp-source-sdes") &&
          gst_structure_has_field_typed (s, "session", G_TYPE_UINT) &&
          gst_structure_has_field_typed (s, "ssrc", G_TYPE_UINT) &&
          gst_structure_has_field_typed (s, "cname", G_TYPE_STRING))
      {
        guint session_id;
        guint ssrc;
        const GValue *val;
        FsRtpSession *session;
        const gchar *cname;

        val = gst_structure_get_value (s, "session");
        session_id = g_value_get_uint (val);

        val = gst_structure_get_value (s, "ssrc");
        ssrc = g_value_get_uint (val);

        cname = gst_structure_get_string (s, "cname");

        if (!ssrc || !cname)
        {
          GST_WARNING_OBJECT (self,
              "Got GstRTPBinSDES without a ssrc or a cname (ssrc:%u cname:%p)",
              ssrc, cname);
          break;
        }

        session = fs_rtp_conference_get_session_by_id (self, session_id);

        if (session) {
          fs_rtp_session_associate_ssrc_cname (session, ssrc, cname);
          g_object_unref (session);
        } else {
          GST_WARNING_OBJECT (self,"Our RtpBin announced a new association"
              "for non-existent session %u for ssrc: %u and cname %s",
              session_id, ssrc, cname);
        }
      }
      else if (gst_structure_has_name (s, "dtmf-event-processed") ||
          gst_structure_has_name (s, "dtmf-event-dropped"))
      {
        GList *item;
        guint cookie;


        GST_OBJECT_LOCK (self);
      restart:
        cookie = self->priv->sessions_cookie;
        for (item = self->priv->sessions; item; item = item->next)
        {
          GST_OBJECT_UNLOCK (self);
          if (fs_rtp_session_handle_dtmf_event_message (item->data, message))
          {
            gst_message_unref (message);
            message = NULL;
            goto out;
          }
          GST_OBJECT_LOCK (self);
          if (cookie != self->priv->sessions_cookie)
            goto restart;
        }
        GST_OBJECT_UNLOCK (self);

      }
    }
    break;
    case GST_MESSAGE_STREAM_STATUS:
    {
      GstStreamStatusType type;
      guint i;

      gst_message_parse_stream_status (message, &type, NULL);

      switch (type)
      {
        case GST_STREAM_STATUS_TYPE_ENTER:
          GST_OBJECT_LOCK (self);
          for (i = 0; i < self->priv->threads->len; i++)
          {
            if (g_ptr_array_index (self->priv->threads, i) ==
                g_thread_self ())
              goto done;
          }
          g_ptr_array_add (self->priv->threads, g_thread_self ());
//.........这里部分代码省略.........
开发者ID:kakaroto,项目名称:farstream,代码行数:101,代码来源:fs-rtp-conference.c


示例6: gst_netfilter_set_property

static void gst_netfilter_set_property(GObject *object, guint prop_id, GValue const *value, GParamSpec *pspec)
{
	GstNetfilter *netfilter;
	GST_OBJECT_LOCK(object);
	netfilter = GST_NETFILTER(object);

	switch (prop_id)
	{
		case PROP_FILTER_ADDRESS:
		{
			/*
			The address can be specified in many ways, as hostname, as IPv4 address, as IPv6 address..
			getaddrinfo is used to get an IP address out of what has been specified
			*/

			int error;
			struct addrinfo *result;
			char const *address_str;

			address_str = g_value_get_string(value);
			error = getaddrinfo(address_str, NULL, NULL, &result);

			if (error != 0)
			{
				GST_ERROR_OBJECT(netfilter, "Could not set filter address property: %s", gai_strerror(error));
			}
			else
			{
				switch (result->ai_family)
				{
					case AF_INET:
					{
						struct sockaddr_in const *sockaddr_ipv4 = (struct sockaddr_in const *)(result->ai_addr);
						struct in_addr const *addr = &(sockaddr_ipv4->sin_addr);
						gst_netaddress_set_ip4_address(&(netfilter->filter_address), addr->s_addr, DUMMY_PORT);
						break;
					}
					case AF_INET6:
					{
						struct sockaddr_in6 const *sockaddr_ipv6 = (struct sockaddr_in6 const *)(result->ai_addr);
						struct in6_addr const *addr = &(sockaddr_ipv6->sin6_addr);
						gst_netaddress_set_ip6_address(&(netfilter->filter_address), (guint8 *)(addr->s6_addr), DUMMY_PORT);
						break;
					}
					default:
						GST_ERROR_OBJECT(netfilter, "Could not set filter address property: unknown address family %d", result->ai_family);
				}
			}

			freeaddrinfo(result);

			break;
		}
		case PROP_ENABLED:
		{
			netfilter->filtering_enabled = g_value_get_boolean(value);
			GST_DEBUG_OBJECT(netfilter, "Filtering is %s", netfilter->filtering_enabled ? "enabled" : "disabled");
			break;
		}
		default:
			G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
			break;
	}

	GST_OBJECT_UNLOCK(object);
}
开发者ID:dv1,项目名称:gstnetfilter,代码行数:66,代码来源:gstnetfilter.c


示例7: gst_type_find_handle_src_query

static gboolean
gst_type_find_handle_src_query (GstPad * pad, GstObject * parent,
    GstQuery * query)
{
  GstTypeFindElement *typefind;
  gboolean res = FALSE;

  typefind = GST_TYPE_FIND_ELEMENT (parent);
  GST_DEBUG_OBJECT (typefind, "Handling src query %s",
      GST_QUERY_TYPE_NAME (query));

  switch (GST_QUERY_TYPE (query)) {
    case GST_QUERY_SCHEDULING:
      /* FIXME, filter out the scheduling modes that we understand */
      res = gst_pad_peer_query (typefind->sink, query);
      break;
    case GST_QUERY_CAPS:
    {
      GST_DEBUG_OBJECT (typefind,
          "Got caps query, our caps are %" GST_PTR_FORMAT, typefind->caps);

      /* We can hijack caps query if we typefind already */
      if (typefind->caps) {
        gst_query_set_caps_result (query, typefind->caps);
        res = TRUE;
      } else {
        res = gst_pad_peer_query (typefind->sink, query);
      }
      break;
    }
    case GST_QUERY_POSITION:
    {
      gint64 peer_pos;
      GstFormat format;

      if (!(res = gst_pad_peer_query (typefind->sink, query)))
        goto out;

      gst_query_parse_position (query, &format, &peer_pos);

      GST_OBJECT_LOCK (typefind);
      /* FIXME: this code assumes that there's no discont in the queue */
      switch (format) {
        case GST_FORMAT_BYTES:
          peer_pos -= gst_adapter_available (typefind->adapter);
          if (peer_pos < 0)     /* Clamp result to 0 */
            peer_pos = 0;
          break;
        default:
          /* FIXME */
          break;
      }
      GST_OBJECT_UNLOCK (typefind);
      gst_query_set_position (query, format, peer_pos);
      break;
    }
    default:
      res = gst_pad_query_default (pad, parent, query);
      break;
  }
out:
  return res;
}
开发者ID:GrokImageCompression,项目名称:gstreamer,代码行数:63,代码来源:gsttypefindelement.c


示例8: stop_typefinding

static void
stop_typefinding (GstTypeFindElement * typefind)
{
  GstState state;
  gboolean push_cached_buffers;
  gsize avail;
  GstBuffer *buffer;
  GstClockTime pts, dts;

  gst_element_get_state (GST_ELEMENT (typefind), &state, NULL, 0);

  push_cached_buffers = (state >= GST_STATE_PAUSED && typefind->caps);

  GST_DEBUG_OBJECT (typefind, "stopping typefinding%s",
      push_cached_buffers ? " and pushing cached events and buffers" : "");

  typefind->mode = MODE_NORMAL;
  if (push_cached_buffers)
    gst_type_find_element_send_cached_events (typefind);

  GST_OBJECT_LOCK (typefind);
  avail = gst_adapter_available (typefind->adapter);
  if (avail == 0)
    goto no_data;

  pts = gst_adapter_prev_pts (typefind->adapter, NULL);
  dts = gst_adapter_prev_dts (typefind->adapter, NULL);
  buffer = gst_adapter_take_buffer (typefind->adapter, avail);
  GST_BUFFER_PTS (buffer) = pts;
  GST_BUFFER_DTS (buffer) = dts;
  GST_BUFFER_OFFSET (buffer) = typefind->initial_offset;
  GST_OBJECT_UNLOCK (typefind);

  if (!push_cached_buffers) {
    gst_buffer_unref (buffer);
  } else {
    GstPad *peer = gst_pad_get_peer (typefind->src);

    /* make sure the user gets a meaningful error message in this case,
     * which is not a core bug or bug of any kind (as the default error
     * message emitted by gstpad.c otherwise would make you think) */
    if (peer && GST_PAD_CHAINFUNC (peer) == NULL) {
      GST_DEBUG_OBJECT (typefind, "upstream only supports push mode, while "
          "downstream element only works in pull mode, erroring out");
      GST_ELEMENT_ERROR (typefind, STREAM, FAILED,
          ("%s cannot work in push mode. The operation is not supported "
              "with this source element or protocol.",
              G_OBJECT_TYPE_NAME (GST_PAD_PARENT (peer))),
          ("Downstream pad %s:%s has no chainfunction, and the upstream "
              "element does not support pull mode", GST_DEBUG_PAD_NAME (peer)));
      typefind->mode = MODE_ERROR;      /* make the chain function error out */
      gst_buffer_unref (buffer);
    } else {
      gst_pad_push (typefind->src, buffer);
    }
    if (peer)
      gst_object_unref (peer);
  }
  return;

  /* ERRORS */
no_data:
  {
    GST_DEBUG_OBJECT (typefind, "we have no data to typefind");
    GST_OBJECT_UNLOCK (typefind);
    return;
  }
}
开发者ID:GrokImageCompression,项目名称:gstreamer,代码行数:68,代码来源:gsttypefindelement.c


示例9: gst_imx_compositor_aggregate_frames


//.........这里部分代码省略.........
			 * Sometimes, pads don't deliver data right from the start;
			 * in these cases, their buffers will be NULL
			 * Just skip to the next pad in that case */
			if (videoaggregator_pad->buffer != NULL)
			{
				GstVideoCropMeta *video_crop_meta;
				if (compositor_pad->input_crop && ((video_crop_meta = gst_buffer_get_video_crop_meta(videoaggregator_pad->buffer)) != NULL))
				{
					/* Crop metadata present. Reconfigure canvas. */

					GstVideoInfo *info = &(videoaggregator_pad->info);

					GstImxRegion source_region;
					source_region.x1 = video_crop_meta->x;
					source_region.y1 = video_crop_meta->y;
					source_region.x2 = video_crop_meta->x + video_crop_meta->width;
					source_region.y2 = video_crop_meta->y + video_crop_meta->height;

					/* Make sure the source region does not exceed valid bounds */
					source_region.x1 = MAX(0, source_region.x1);
					source_region.y1 = MAX(0, source_region.y1);
					source_region.x2 = MIN(GST_VIDEO_INFO_WIDTH(info), source_region.x2);
					source_region.y2 = MIN(GST_VIDEO_INFO_HEIGHT(info), source_region.y2);

					GST_LOG_OBJECT(compositor, "retrieved crop rectangle %" GST_IMX_REGION_FORMAT, GST_IMX_REGION_ARGS(&source_region));


					/* Canvas needs to be updated if either one of these applies:
					 * - the current frame has crop metadata, the last one didn't
					 * - the new crop rectangle and the last are different */
					if (!(compositor_pad->last_frame_with_cropdata) || !gst_imx_region_equal(&source_region, &(compositor_pad->last_source_region)))
					{
						GST_LOG_OBJECT(compositor, "using new crop rectangle %" GST_IMX_REGION_FORMAT, GST_IMX_REGION_ARGS(&source_region));
						compositor_pad->last_source_region = source_region;
						compositor_pad->canvas_needs_update = TRUE;
					}

					compositor_pad->last_frame_with_cropdata = TRUE;

					/* Update canvas and input region if necessary */
					if (compositor_pad->canvas_needs_update)
						gst_imx_compositor_pad_update_canvas(compositor_pad, &(compositor_pad->last_source_region));
				}
				else
				{
					/* Force an update if this frame has no crop metadata but the last one did */
					if (compositor_pad->last_frame_with_cropdata)
						compositor_pad->canvas_needs_update = TRUE;
					compositor_pad->last_frame_with_cropdata = FALSE;

					/* Update the pad's canvas if necessary,
					 * to ensure there is a valid canvas to draw to */
					gst_imx_compositor_pad_update_canvas(compositor_pad, NULL);
				}

				GST_LOG_OBJECT(
					compositor,
					"pad %p  frame %p  format: %s  width/height: %d/%d  regions: outer %" GST_IMX_REGION_FORMAT "  inner %" GST_IMX_REGION_FORMAT "  source subset %" GST_IMX_REGION_FORMAT,
					(gpointer)(videoaggregator_pad),
					(gpointer)(videoaggregator_pad->buffer),
					gst_video_format_to_string(GST_VIDEO_INFO_FORMAT(&(videoaggregator_pad->info))),
					GST_VIDEO_INFO_WIDTH(&(videoaggregator_pad->info)),
					GST_VIDEO_INFO_HEIGHT(&(videoaggregator_pad->info)),
					GST_IMX_REGION_ARGS(&(compositor_pad->canvas.outer_region)),
					GST_IMX_REGION_ARGS(&(compositor_pad->canvas.inner_region)),
					GST_IMX_REGION_ARGS(&(compositor_pad->source_subset))
				);

				if (!klass->draw_frame(
					compositor,
					&(videoaggregator_pad->info),
					&(compositor_pad->source_subset),
					&(compositor_pad->canvas),
					videoaggregator_pad->buffer,
					(guint8)(compositor_pad->alpha * 255.0)
				))
				{
					GST_ERROR_OBJECT(compositor, "error while drawing composition frame");
					ret = GST_FLOW_ERROR;
					break;
				}
			}
			else
			{
				GST_LOG_OBJECT(compositor, "pad %p  buffer is NULL, no frame to aggregate - skipping to next pad", (gpointer)(videoaggregator_pad));
			}

			/* Move to next pad */
			walk = g_list_next(walk);
		}

		GST_OBJECT_UNLOCK(compositor);
	}

	/* Release the output buffer, since we don't need it anymore, and
	 * there is no reason to retain it */
	klass->set_output_frame(compositor, NULL);

	return ret;
}
开发者ID:FrankBau,项目名称:gstreamer-imx,代码行数:101,代码来源:compositor.c


示例10: gst_type_find_element_loop

static void
gst_type_find_element_loop (GstPad * pad)
{
  GstTypeFindElement *typefind;
  GstFlowReturn ret = GST_FLOW_OK;

  typefind = GST_TYPE_FIND_ELEMENT (GST_PAD_PARENT (pad));

  if (typefind->need_stream_start) {
    gchar *stream_id;
    GstEvent *event;

    stream_id = gst_pad_create_stream_id (typefind->src,
        GST_ELEMENT_CAST (typefind), NULL);

    GST_DEBUG_OBJECT (typefind, "Pushing STREAM_START");
    event = gst_event_new_stream_start (stream_id);
    gst_event_set_group_id (event, gst_util_group_id_next ());
    gst_pad_push_event (typefind->src, event);

    typefind->need_stream_start = FALSE;
    g_free (stream_id);
  }

  if (typefind->mode == MODE_TYPEFIND) {
    GstPad *peer = NULL;
    GstCaps *found_caps = NULL;
    GstTypeFindProbability probability = GST_TYPE_FIND_NONE;

    GST_DEBUG_OBJECT (typefind, "find type in pull mode");

    GST_OBJECT_LOCK (typefind);
    if (typefind->force_caps) {
      found_caps = gst_caps_ref (typefind->force_caps);
      probability = GST_TYPE_FIND_MAXIMUM;
    }
    GST_OBJECT_UNLOCK (typefind);

    if (!found_caps) {
      peer = gst_pad_get_peer (pad);
      if (peer) {
        gint64 size;
        gchar *ext;

        if (!gst_pad_query_duration (peer, GST_FORMAT_BYTES, &size)) {
          GST_WARNING_OBJECT (typefind, "Could not query upstream length!");
          gst_object_unref (peer);

          ret = GST_FLOW_ERROR;
          goto pause;
        }

        /* the size if 0, we cannot continue */
        if (size == 0) {
          /* keep message in sync with message in sink event handler */
          GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND,
              (_("Stream contains no data.")), ("Can't typefind empty stream"));
          gst_object_unref (peer);
          ret = GST_FLOW_ERROR;
          goto pause;
        }
        ext = gst_type_find_get_extension (typefind, pad);

        found_caps =
            gst_type_find_helper_get_range (GST_OBJECT_CAST (peer),
            GST_OBJECT_PARENT (peer),
            (GstTypeFindHelperGetRangeFunction) (GST_PAD_GETRANGEFUNC (peer)),
            (guint64) size, ext, &probability);
        g_free (ext);

        GST_DEBUG ("Found caps %" GST_PTR_FORMAT, found_caps);

        gst_object_unref (peer);
      }
    }

    if (!found_caps || probability < typefind->min_probability) {
      GST_DEBUG ("Trying to guess using extension");
      gst_caps_replace (&found_caps, NULL);
      found_caps =
          gst_type_find_guess_by_extension (typefind, pad, &probability);
    }

    if (!found_caps || probability < typefind->min_probability) {
      GST_ELEMENT_ERROR (typefind, STREAM, TYPE_NOT_FOUND, (NULL), (NULL));
      gst_caps_replace (&found_caps, NULL);
      ret = GST_FLOW_ERROR;
      goto pause;
    }

    GST_DEBUG ("Emiting found caps %" GST_PTR_FORMAT, found_caps);
    gst_type_find_element_emit_have_type (typefind, probability, found_caps);
    typefind->mode = MODE_NORMAL;
    gst_caps_unref (found_caps);
  } else if (typefind->mode == MODE_NORMAL) {
    GstBuffer *outbuf = NULL;

    if (typefind->need_segment) {
      typefind->need_segment = FALSE;
      gst_pad_push_event (typefind->src,
//.........这里部分代码省略.........
开发者ID:GrokImageCompression,项目名称:gstreamer,代码行数:101,代码来源:gsttypefindelement.c


示例11: gst_v4l2_allocator_start

guint
gst_v4l2_allocator_start (GstV4l2Allocator * allocator, guint32 count,
    guint32 memory)
{
  struct v4l2_requestbuffers breq = { count, allocator->type, memory };
  gboolean can_allocate;
  gint i;

  g_return_val_if_fail (count != 0, 0);

  GST_OBJECT_LOCK (allocator);

  if (g_atomic_int_get (&allocator->active))
    goto already_active;

  if (v4l2_ioctl (allocator->video_fd, VIDIOC_REQBUFS, &breq) < 0)
    goto reqbufs_failed;

  if (breq.count < 1)
    goto out_of_memory;

  switch (memory) {
    case V4L2_MEMORY_MMAP:
      can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (allocator, MMAP);
      break;
    case V4L2_MEMORY_USERPTR:
      can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (allocator, USERPTR);
      break;
    case V4L2_MEMORY_DMABUF:
      can_allocate = GST_V4L2_ALLOCATOR_CAN_ALLOCATE (allocator, DMABUF);
      break;
    default:
      can_allocate = FALSE;
      break;
  }

  GST_DEBUG_OBJECT (allocator, "allocated %u %s buffers out of %u requested",
      breq.count, memory_type_to_str (memory), count);

  allocator->can_allocate = can_allocate;
  allocator->count = breq.count;
  allocator->memory = memory;

  /* Create memory groups */
  for (i = 0; i < allocator->count; i++) {
    allocator->groups[i] = gst_v4l2_memory_group_new (allocator, i);
    if (allocator->groups[i] == NULL)
      goto error;

    gst_atomic_queue_push (allocator->free_queue, allocator->groups[i]);
  }

  g_atomic_int_set (&allocator->active, TRUE);

done:
  GST_OBJECT_UNLOCK (allocator);
  return breq.count;

already_active:
  {
    GST_ERROR_OBJECT (allocator, "allocator already active");
    goto error;
  }
reqbufs_failed:
  {
    GST_ERROR_OBJECT (allocator,
        "error requesting %d buffers: %s", count, g_strerror (errno));
    goto error;
  }
out_of_memory:
  {
    GST_ERROR_OBJECT (allocator, "Not enough memory to allocate buffers");
    goto error;
  }
error:
  {
    breq.count = 0;
    goto done;
  }
}
开发者ID:hizukiayaka,项目名称:gst-plugins-good,代码行数:80,代码来源:gstv4l2allocator.c


示例12: gst_dtls_enc_chain

static GstFlowReturn
gst_dtls_enc_chain (GstDtlsBase * base, GstBuffer * buffer)
{
  GstDtlsEnc *self = GST_DTLS_ENC (base);
  gssize ret;
  GstMapInfo map;
  GError *error = NULL;

  if (gst_buffer_get_size (buffer) == 0) {
    gst_buffer_unref (buffer);
    return GST_FLOW_OK;
  }

  if (!gst_buffer_map (buffer, &map, GST_MAP_READ)) {
    GST_ELEMENT_ERROR (base, RESOURCE, READ, ("Can't map buffer"),
        ("Can't map buffer"));
    gst_buffer_unref (buffer);
    return GST_FLOW_ERROR;
  }
  GST_OBJECT_LOCK (self);
  self->src_buffer = buffer;
  self->running_thread = g_thread_self ();
  GST_OBJECT_UNLOCK (self);
  ret =
      g_output_stream_write (g_io_stream_get_output_stream (G_IO_STREAM
          (base->conn->conn)), map.data, map.size, NULL, &error);

  g_assert (ret < 0 || ret == map.size);

  if (ret > 0 && ret != map.size)
    ret = -10;

  GST_OBJECT_LOCK (self);
  self->src_buffer = NULL;
  GST_OBJECT_UNLOCK (self);

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

  if (ret > 0) {
    return GST_FLOW_OK;
  } else {
    if (error) {
      GstFlowReturn flow = GST_FLOW_ERROR;

      if (error->domain == GST_IO_STREAM_FLOW_RETURN) {
        flow = error->code;
      } else {
        GST_ELEMENT_ERROR (base, LIBRARY, FAILED,
            ("DTLS encoding failed: %s", error->message),
            ("DTLS encoding failed: %s", error->message));
      }

      g_clear_error (&error);

      return flow;
    } else {
      GST_ELEMENT_ERROR (base, LIBRARY, FAILED, ("Unknown encoding error"),
          ("Unknown encoding error"));
      return GST_FLOW_ERROR;
    }
  }
}
开发者ID:KurentoLegacy,项目名称:kms-dtls-plugins,代码行数:63,代码来源:gstdtlsenc.c


示例13: gst_ffmpegauddec_set_format

static gboolean
gst_ffmpegauddec_set_format (GstAudioDecoder * decoder, GstCaps * caps)
{
  GstFFMpegAudDec *ffmpegdec = (GstFFMpegAudDec *) decoder;
  GstFFMpegAudDecClass *oclass;
  gboolean ret = TRUE;

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

  GST_DEBUG_OBJECT (ffmpegdec, "setcaps called");

  GST_OBJECT_LOCK (ffmpegdec);

  if (ffmpegdec->last_caps && gst_caps_is_equal (ffmpegdec->last_caps, caps)) {
    GST_DEBUG_OBJECT (ffmpegdec, "same caps");
    GST_OBJECT_UNLOCK (ffmpegdec);
    return TRUE;
  }

  gst_caps_replace (&ffmpegdec->last_caps, caps);

  /* close old session */
  if (ffmpegdec->opened) {
    GST_OBJECT_UNLOCK (ffmpegdec);
    gst_ffmpegauddec_drain (ffmpegdec);
    GST_OBJECT_LOCK (ffmpegdec);
    gst_ffmpegauddec_close (ffmpegdec);
  }

  /* get size and so */
  gst_ffmpeg_caps_with_codecid (oclass->in_plugin->id,
      oclass->in_plugin->type, caps, ffmpegdec->context);

  /* workaround encoder bugs */
  ffmpegdec->context->workaround_bugs |= FF_BUG_AUTODETECT;
  ffmpegdec->context->err_recognition = 1;

  ffmpegdec->context->opaque = ffmpegdec;
  ffmpegdec->context->get_buffer = gst_ffmpegauddec_get_buffer;
  ffmpegdec->context->reget_buffer = NULL;
  ffmpegdec->context->release_buffer = NULL;

  /* open codec - we don't select an output pix_fmt yet,
   * simply because we don't know! We only get it
   * during playback... */
  if (!gst_ffmpegauddec_open (ffmpegdec))
    goto open_failed;

done:
  GST_OBJECT_UNLOCK (ffmpegdec);

  return ret;

  /* ERRORS */
open_failed:
  {
    GST_DEBUG_OBJECT (ffmpegdec, "Failed to open");
    ret = FALSE;
    goto done;
  }
}
开发者ID:cablelabs,项目名称:gst-libav,代码行数:61,代码来源:gstavauddec.c


示例14: gst_video_scale_transform

static GstFlowReturn
gst_video_scale_transform (GstBaseTransform * trans, GstBuffer * in,
    GstBuffer * out)
{
  GstVideoScale *videoscale = GST_VIDEO_SCALE (trans);
  GstFlowReturn ret = GST_FLOW_OK;
  VSImage dest = { NULL, };
  VSImage src = { NULL, };
  VSImage dest_u = { NULL, };
  VSImage dest_v = { NULL, };
  VSImage src_u = { NULL, };
  VSImage src_v = { NULL, };
  gint method;
  const guint8 *black = _get_black_for_format (videoscale->format);
  gboolean add_borders;

  GST_OBJECT_LOCK (videoscale);
  method = videoscale->method;
  add_borders = videoscale->add_borders;
  GST_OBJECT_UNLOCK (videoscale);

  if (videoscale->from_width == 1) {
    method = GST_VIDEO_SCALE_NEAREST;
  }
  if (method == GST_VIDEO_SCALE_4TAP &&
      (videoscale->from_width < 4 || videoscale->from_height < 4)) {
    method = GST_VIDEO_SCALE_BILINEAR;
  }

  gst_video_scale_setup_vs_image (&src, videoscale->format, 0,
      videoscale->from_width, videoscale->from_height, 0, 0,
      GST_BUFFER_DATA (in));
  gst_video_scale_setup_vs_image (&dest, videoscale->format, 0,
      videoscale->to_width, videoscale->to_height, videoscale->borders_w,
      videoscale->borders_h, GST_BUFFER_DATA (out));

  if (videoscale->format == GST_VIDEO_FORMAT_I420
      || videoscale->format == GST_VIDEO_FORMAT_YV12
      || videoscale->format == GST_VIDEO_FORMAT_Y444
      || videoscale->format == GST_VIDEO_FORMAT_Y42B
      || videoscale->format == GST_VIDEO_FORMAT_Y41B) {
    gst_video_scale_setup_vs_image (&src_u, videoscale->format, 1,
        videoscale->from_width, videoscale->from_height, 0, 0,
        GST_BUFFER_DATA (in));
    gst_video_scale_setup_vs_image (&src_v, videoscale->format, 2,
        videoscale->from_width, videoscale->from_height, 0, 0,
        GST_BUFFER_DATA (in));
    gst_video_scale_setup_vs_image (&dest_u, videoscale->format, 1,
        videoscale->to_width, videoscale->to_height, videoscale->borders_w,
        videoscale->borders_h, GST_BUFFER_DATA (out));
    gst_video_scale_setup_vs_image (&dest_v, videoscale->format, 2,
        videoscale->to_width, videoscale->to_height, videoscale->borders_w,
        videoscale->borders_h, GST_BUFFER_DATA (out));
  }

  switch (videoscale->format) {
    case GST_VIDEO_FORMAT_RGBx:
    case GST_VIDEO_FORMAT_xRGB:
    case GST_VIDEO_FORMAT_BGRx:
    case GST_VIDEO_FORMAT_xBGR:
    case GST_VIDEO_FORMAT_RGBA:
    case GST_VIDEO_FORMAT_ARGB:
    case GST_VIDEO_FORMAT_BGRA:
    case GST_VIDEO_FORMAT_ABGR:
    case GST_VIDEO_FORMAT_AYUV:
      if (add_borders)
        vs_fill_borders_RGBA (&dest, black);
      switch (method) {
        case GST_VIDEO_SCALE_NEAREST:
          vs_image_scale_nearest_RGBA (&dest, &src, videoscale->tmp_buf);
          break;
        case GST_VIDEO_SCALE_BILINEAR:
          vs_image_scale_linear_RGBA (&dest, &src, videoscale->tmp_buf);
          break;
        case GST_VIDEO_SCALE_4TAP:
          vs_image_scale_4tap_RGBA (&dest, &src, videoscale->tmp_buf);
          break;
        default:
          goto unknown_mode;
      }
      break;
    case GST_VIDEO_FORMAT_ARGB64:
    case GST_VIDEO_FORMAT_AYUV64:
      if (add_borders)
        vs_fill_borders_AYUV64 (&dest, black);
      switch (method) {
        case GST_VIDEO_SCALE_NEAREST:
          vs_image_scale_nearest_AYUV64 (&dest, &src, videoscale->tmp_buf);
          break;
        case GST_VIDEO_SCALE_BILINEAR:
          vs_image_scale_linear_AYUV64 (&dest, &src, videoscale->tmp_buf);
          break;
        case GST_VIDEO_SCALE_4TAP:
          vs_image_scale_4tap_AYUV64 (&dest, &src, videoscale->tmp_buf);
          break;
        default:
          goto unknown_mode;
      }
      break;
    case GST_VIDEO_FORMAT_RGB:
//.........这里部分代码省略.........
开发者ID:ChinnaSuhas,项目名称:ossbuild,代码行数:101,代码来源:gstvideoscale.c


示例15: gst_type_find_element_sink_event

static gboolean
gst_type_find_element_sink_event (GstPad * pad, GstObject * parent,
    GstEvent * event)
{
  gboolean res = FALSE;
  GstTypeFindElement *typefind = GST_TYPE_FIND_ELEMENT (parent);

  GST_DEBUG_OBJECT (typefind, "got %s event in mode %d",
      GST_EVENT_TYPE_NAME (event), typefind->mode);

  switch (typefind->mode) {
    case MODE_TYPEFIND:
      switch (GST_EVENT_TYPE (event)) {
        case GST_EVENT_CAPS:
        {
          GstCaps *caps;

          /* Parse and push out our caps and data */
          gst_event_parse_caps (event, &caps);
          res = gst_type_find_element_setcaps (typefind, caps);

          gst_event_unref (event);
          break;
        }
        case GST_EVENT_GAP:
        {
          GST_FIXME_OBJECT (typefind,
              "GAP events during typefinding not handled properly");

          /* FIXME: These would need to be inserted in the stream at
           * the right position between buffers, but we combine all
           * buffers with a GstAdapter. Drop the GAP event for now,
           * which will only cause an implicit GAP between buffers.
           */
          gst_event_unref (event);
          res = TRUE;
          break;
        }
        case GST_EVENT_EOS:
        {
          GST_INFO_OBJECT (typefind, "Got EOS and no type found yet");
          gst_type_find_element_chain_do_typefinding (typefind, FALSE, TRUE);

          res = gst_pad_push_event (typefind->src, event);
          break;
        }
        case GST_EVENT_FLUSH_STOP:{
          GList *l;

          GST_OBJECT_LOCK (typefind);

          for (l = typefind->cached_events; l; l = l->next) {
            if (GST_EVENT_IS_STICKY (l->data) &&
                GST_EVENT_TYPE (l->data) != GST_EVENT_SEGMENT &&
                GST_EVENT_TYPE (l->data) != GST_EVENT_EOS) {
              gst_pad_store_sticky_event (typefind->src, l->data);
            }
            gst_event_unref (l->data);
          }

          g_list_free (typefind->cached_events);
          typefind->cached_events = NULL;
          gst_adapter_clear (typefind->adapter);
          GST_OBJECT_UNLOCK (typefind);
          /* fall through */
        }
        case GST_EVENT_FLUSH_START:
          res = gst_pad_push_event (typefind->src, event);
          break;
        default:
          /* Forward events that would happen before the caps event
           * directly instead of storing them. There's no reason not
           * to send them directly and we should only store events
           * for later sending that would need to come after the caps
           * event */
          if (GST_EVENT_TYPE (event) < GST_EVENT_CAPS) {
            res = gst_pad_push_event (typefind->src, event);
          } else {
            GST_DEBUG_OBJECT (typefind, "Saving %s event to send later",
                GST_EVENT_TYPE_NAME (event));
            GST_OBJECT_LOCK (typefind);
            typefind->cached_events =
                g_list_append (typefind->cached_events, event);
            GST_OBJECT_UNLOCK (typefind);
            res = TRUE;
          }
          break;
      }
      break;
    case MODE_NORMAL:
      res = gst_pad_push_event (typefind->src, event);
      break;
    case MODE_ERROR:
      break;
    default:
      g_assert_not_reached ();
  }
  return res;
}
开发者ID:GrokImageCompression,项目名称:gstreamer,代码行数:99,代码来源:gsttypefindelement.c


示例16: gst_geometric_transform_transform_frame

static GstFlowReturn
gst_geometric_transform_transform_frame (GstVideoFilter * vfilter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
  GstGeometricTransform *gt;
  GstGeometricTransformClass *klass;
  gint x, y;
  GstFlowReturn ret = GST_FLOW_OK;
  gdouble *ptr;
  guint8 *in_data;
  guint8 *out_data;

  gt = GST_GEOMETRIC_TRANSFORM_CAST (vfilter);
  klass = GST_GEOMETRIC_TRANSFORM_GET_CLASS (gt);

  in_data = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
  out_data = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);

  if (GST_VIDEO_FRAME_FORMAT (out_frame) == GST_VIDEO_FORMAT_AYUV) {
    /* in AYUV black is not just all zeros:
     * 0x10 is black for Y,
     * 0x80 is black for Cr and Cb */
    for (int i = 0; i < out_frame->map[0].size; i += 4)
      GST_WRITE_UINT32_BE (out_data + i, 0xff108080);
  } else {
    memset (out_data, 0, out_frame->map[0].size);
  }

  GST_OBJECT_LOCK (gt);
  if (gt->precalc_map) {
    if (gt->needs_remap) {
      if (klass->prepare_func)
        if (!klass->prepare_func (gt)) {
          ret = FALSE;
          

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C++ GST_PAD函数代码示例发布时间:2022-05-30
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C++ GST_OBJECT_PARENT函数代码示例发布时间:2022-05-30
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