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rfbsrc: Implement decide_allocation virtual
This way we can use the base class for buffer allocation, hence use fill() instead of create() virtual. This also adds a strict check on the select pool buffer size as we don't support strides and padding. This is based on initial patch proposed by Sebastien Dröge, from which I also fixed a buffer pool leak. https://bugzilla.gnome.org/show_bug.cgi?id=763441
This commit is contained in:
Nicolas Dufresne
parent
d3d34b5a8c
commit
7e293f15dd
2 changed files with 41 additions and 55 deletions
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@ -76,8 +76,9 @@ static gboolean gst_rfb_src_negotiate (GstBaseSrc * bsrc);
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static gboolean gst_rfb_src_stop (GstBaseSrc * bsrc);
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static gboolean gst_rfb_src_event (GstBaseSrc * bsrc, GstEvent * event);
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static gboolean gst_rfb_src_unlock (GstBaseSrc * bsrc);
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static GstFlowReturn gst_rfb_src_create (GstPushSrc * psrc,
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GstBuffer ** outbuf);
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static gboolean gst_rfb_src_decide_allocation (GstBaseSrc * bsrc,
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GstQuery * query);
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static GstFlowReturn gst_rfb_src_fill (GstPushSrc * psrc, GstBuffer * outbuf);
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#define gst_rfb_src_parent_class parent_class
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G_DEFINE_TYPE (GstRfbSrc, gst_rfb_src, GST_TYPE_PUSH_SRC);
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@ -151,7 +152,9 @@ gst_rfb_src_class_init (GstRfbSrcClass * klass)
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_rfb_src_stop);
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gstbasesrc_class->event = GST_DEBUG_FUNCPTR (gst_rfb_src_event);
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gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_rfb_src_unlock);
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gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_rfb_src_create);
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gstpushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_rfb_src_fill);
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gstbasesrc_class->decide_allocation =
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GST_DEBUG_FUNCPTR (gst_rfb_src_decide_allocation);
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gstelement_class = GST_ELEMENT_CLASS (klass);
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@ -184,10 +187,7 @@ gst_rfb_src_init (GstRfbSrc * src)
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src->view_only = FALSE;
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src->pool = NULL;
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src->decoder = rfb_decoder_new ();
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}
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static void
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@ -196,10 +196,7 @@ gst_rfb_src_finalize (GObject * object)
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GstRfbSrc *src = GST_RFB_SRC (object);
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g_free (src->host);
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if (src->pool) {
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gst_object_unref (src->pool);
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src->pool = NULL;
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}
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if (src->decoder) {
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rfb_decoder_free (src->decoder);
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src->decoder = NULL;
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@ -341,49 +338,48 @@ gst_rfb_src_get_property (GObject * object, guint prop_id,
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}
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}
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static void
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gst_rfb_negotiate_pool (GstRfbSrc * src, GstCaps * caps)
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static gboolean
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gst_rfb_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
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{
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GstQuery *query;
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GstBufferPool *pool = NULL;
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guint size, min, max;
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guint size, min = 1, max = 0;
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GstStructure *config;
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GstCaps *caps;
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GstVideoInfo info;
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gint i;
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gboolean ret;
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/* find a pool for the negotiated caps now */
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query = gst_query_new_allocation (caps, TRUE);
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gst_query_parse_allocation (query, &caps, NULL);
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if (!gst_pad_peer_query (GST_BASE_SRC_PAD (src), query)) {
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/* not a problem, we use the defaults of query */
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GST_DEBUG_OBJECT (src, "could not get downstream ALLOCATION hints");
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}
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if (!caps || !gst_video_info_from_caps (&info, caps))
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return FALSE;
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if (gst_query_get_n_allocation_pools (query) > 0) {
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/* we got configuration from our peer, parse them */
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for (i = 0; i < gst_query_get_n_allocation_pools (query); i++) {
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gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
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} else {
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GST_DEBUG_OBJECT (src, "didn't get downstream pool hints");
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size = GST_BASE_SRC (src)->blocksize;
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min = max = 0;
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/* TODO We restrict to the exact size as we don't support strides or
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* special padding */
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if (size == info.size)
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break;
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gst_object_unref (pool);
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pool = NULL;
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}
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if (pool == NULL) {
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/* we did not get a pool, make one ourselves then */
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pool = gst_video_buffer_pool_new ();
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size = info.size;
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min = max = 0;
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}
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if (src->pool)
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gst_object_unref (src->pool);
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src->pool = pool;
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config = gst_buffer_pool_get_config (pool);
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gst_buffer_pool_config_set_params (config, caps, size, min, max);
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gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
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gst_buffer_pool_set_config (pool, config);
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// and activate
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gst_buffer_pool_set_active (pool, TRUE);
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ret = gst_buffer_pool_set_config (pool, config);
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gst_object_unref (pool);
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gst_query_unref (query);
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return ret;
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}
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static gboolean
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@ -444,13 +440,6 @@ gst_rfb_src_negotiate (GstBaseSrc * bsrc)
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decoder->rect_height =
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(decoder->rect_height ? decoder->rect_height : decoder->height);
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g_object_set (bsrc, "blocksize",
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src->decoder->width * src->decoder->height * (decoder->bpp / 8), NULL);
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decoder->frame = g_malloc (bsrc->blocksize);
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if (decoder->use_copyrect) {
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decoder->prev_frame = g_malloc (bsrc->blocksize);
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}
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decoder->decoder_private = src;
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/* calculate some many used values */
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@ -473,10 +462,13 @@ gst_rfb_src_negotiate (GstBaseSrc * bsrc)
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gst_video_info_set_format (&vinfo, vformat, decoder->rect_width,
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decoder->rect_height);
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decoder->frame = g_malloc (vinfo.size);
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if (decoder->use_copyrect)
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decoder->prev_frame = g_malloc (vinfo.size);
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caps = gst_video_info_to_caps (&vinfo);
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gst_base_src_set_caps (bsrc, caps);
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gst_rfb_negotiate_pool (src, caps);
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gst_caps_unref (caps);
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@ -504,12 +496,11 @@ gst_rfb_src_stop (GstBaseSrc * bsrc)
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}
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static GstFlowReturn
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gst_rfb_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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gst_rfb_src_fill (GstPushSrc * psrc, GstBuffer * outbuf)
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{
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GstRfbSrc *src = GST_RFB_SRC (psrc);
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RfbDecoder *decoder = src->decoder;
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GstMapInfo info;
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GstFlowReturn ret;
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rfb_decoder_send_update_request (decoder, src->incremental_update,
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decoder->offset_x, decoder->offset_y, decoder->rect_width,
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@ -530,22 +521,19 @@ gst_rfb_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
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}
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}
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/* Create the buffer. */
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ret = gst_buffer_pool_acquire_buffer (src->pool, outbuf, NULL);
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if (G_UNLIKELY (ret != GST_FLOW_OK)) {
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if (!gst_buffer_map (outbuf, &info, GST_MAP_WRITE)) {
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GST_ELEMENT_ERROR (src, RESOURCE, WRITE,
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("Could not map the output frame"), (NULL));
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return GST_FLOW_ERROR;
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}
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gst_buffer_map (*outbuf, &info, GST_MAP_WRITE);
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memcpy (info.data, decoder->frame, info.size);
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GST_BUFFER_PTS (*outbuf) =
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GST_BUFFER_PTS (outbuf) =
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gst_clock_get_time (GST_ELEMENT_CLOCK (src)) -
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GST_ELEMENT_CAST (src)->base_time;
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gst_buffer_unmap (*outbuf, &info);
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gst_buffer_unmap (outbuf, &info);
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return GST_FLOW_OK;
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}
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@ -61,8 +61,6 @@ struct _GstRfbSrc
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guint button_mask;
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GstBufferPool *pool;
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/* protocol version */
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guint version_major;
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guint version_minor;
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