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deinterlace: Implement upstream negotation
This commit is contained in:
Sebastian Dröge
parent
cd33adbd96
commit
ceea8dc15f
2 changed files with 142 additions and 9 deletions
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@ -382,6 +382,8 @@ static gboolean gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps);
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static gboolean gst_deinterlace_sink_event (GstPad * pad, GstEvent * event);
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static gboolean gst_deinterlace_sink_query (GstPad * pad, GstQuery * query);
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static GstFlowReturn gst_deinterlace_chain (GstPad * pad, GstBuffer * buffer);
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static GstFlowReturn gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset,
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guint size, GstCaps * caps, GstBuffer ** buf);
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static GstStateChangeReturn gst_deinterlace_change_state (GstElement * element,
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GstStateChange transition);
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@ -714,6 +716,8 @@ gst_deinterlace_init (GstDeinterlace * self, GstDeinterlaceClass * klass)
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GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
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gst_pad_set_query_function (self->sinkpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_sink_query));
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gst_pad_set_bufferalloc_function (self->sinkpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_alloc_buffer));
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gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
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self->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
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@ -723,10 +727,10 @@ gst_deinterlace_init (GstDeinterlace * self, GstDeinterlaceClass * klass)
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GST_DEBUG_FUNCPTR (gst_deinterlace_src_query_types));
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gst_pad_set_query_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_src_query));
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gst_pad_set_setcaps_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
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gst_pad_set_getcaps_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
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gst_pad_set_setcaps_function (self->srcpad,
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GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
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gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
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gst_element_no_more_pads (GST_ELEMENT (self));
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@ -777,6 +781,18 @@ gst_deinterlace_reset (GstDeinterlace * self)
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gst_segment_init (&self->segment, GST_FORMAT_TIME);
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if (self->sink_caps)
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gst_caps_unref (self->sink_caps);
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self->sink_caps = NULL;
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if (self->src_caps)
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gst_caps_unref (self->src_caps);
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self->src_caps = NULL;
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if (self->request_caps)
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gst_caps_unref (self->request_caps);
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self->request_caps = NULL;
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gst_deinterlace_reset_history (self);
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gst_deinterlace_reset_qos (self);
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@ -1113,12 +1129,26 @@ gst_deinterlace_chain (GstPad * pad, GstBuffer * buf)
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GST_DEBUG_OBJECT (self, "deinterlacing top field");
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/* create new buffer */
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ret = gst_pad_alloc_buffer_and_set_caps (self->srcpad,
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GST_BUFFER_OFFSET_NONE, self->frame_size,
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GST_PAD_CAPS (self->srcpad), &outbuf);
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ret = gst_pad_alloc_buffer (self->srcpad,
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GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
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if (ret != GST_FLOW_OK)
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return ret;
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if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
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!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
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gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
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GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
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self->request_caps);
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gst_buffer_unref (outbuf);
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outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
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if (!outbuf)
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return GST_FLOW_ERROR;
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gst_buffer_set_caps (outbuf, self->src_caps);
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}
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g_return_val_if_fail (self->history_count - 1 -
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gst_deinterlace_method_get_latency (self->method) >= 0,
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GST_FLOW_ERROR);
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@ -1176,12 +1206,26 @@ gst_deinterlace_chain (GstPad * pad, GstBuffer * buf)
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GST_DEBUG_OBJECT (self, "deinterlacing bottom field");
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/* create new buffer */
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ret = gst_pad_alloc_buffer_and_set_caps (self->srcpad,
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GST_BUFFER_OFFSET_NONE, self->frame_size,
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GST_PAD_CAPS (self->srcpad), &outbuf);
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ret = gst_pad_alloc_buffer (self->srcpad,
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GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
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if (ret != GST_FLOW_OK)
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return ret;
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if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
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!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
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gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
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GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
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self->request_caps);
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gst_buffer_unref (outbuf);
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outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
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if (!outbuf)
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return GST_FLOW_ERROR;
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gst_buffer_set_caps (outbuf, self->src_caps);
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}
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g_return_val_if_fail (self->history_count - 1 -
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gst_deinterlace_method_get_latency (self->method) >= 0,
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GST_FLOW_ERROR);
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@ -1305,6 +1349,7 @@ gst_deinterlace_getcaps (GstPad * pad)
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peercaps = gst_pad_peer_get_caps (otherpad);
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if (peercaps) {
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GST_DEBUG_OBJECT (pad, "Peer has caps %" GST_PTR_FORMAT, peercaps);
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ret = gst_caps_intersect (ourcaps, peercaps);
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gst_caps_unref (peercaps);
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} else {
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@ -1468,7 +1513,6 @@ gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps)
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if (!gst_pad_set_caps (otherpad, othercaps))
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goto caps_not_accepted;
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gst_caps_unref (othercaps);
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self->field_height = self->frame_height / 2;
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@ -1494,7 +1538,18 @@ gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps)
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gst_util_uint64_scale (GST_SECOND, self->frame_rate_d,
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2 * self->frame_rate_n);
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if (pad == self->sinkpad) {
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gst_caps_replace (&self->sink_caps, caps);
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gst_caps_replace (&self->src_caps, othercaps);
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} else {
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gst_caps_replace (&self->src_caps, caps);
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gst_caps_replace (&self->sink_caps, othercaps);
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}
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GST_DEBUG_OBJECT (pad, "Set caps: %" GST_PTR_FORMAT, caps);
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GST_DEBUG_OBJECT (pad, "Other caps: %" GST_PTR_FORMAT, othercaps);
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gst_caps_unref (othercaps);
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done:
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@ -1780,6 +1835,78 @@ gst_deinterlace_src_query_types (GstPad * pad)
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return types;
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}
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static GstFlowReturn
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gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset, guint size,
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GstCaps * caps, GstBuffer ** buf)
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{
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GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
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GstFlowReturn ret = GST_FLOW_OK;
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*buf = NULL;
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GST_DEBUG_OBJECT (pad, "alloc with caps %" GST_PTR_FORMAT ", size %u", caps,
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size);
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if (self->still_frame_mode ||
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self->mode == GST_DEINTERLACE_MODE_DISABLED || (!self->interlaced
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&& self->mode != GST_DEINTERLACE_MODE_INTERLACED)) {
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ret = gst_pad_alloc_buffer (self->srcpad, offset, size, caps, buf);
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} else if (G_LIKELY (!self->request_caps)) {
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*buf = gst_buffer_try_new_and_alloc (size);
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if (G_UNLIKELY (!*buf)) {
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ret = GST_FLOW_ERROR;
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} else {
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gst_buffer_set_caps (*buf, caps);
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GST_BUFFER_OFFSET (*buf) = offset;
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}
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} else {
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gint width, height;
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GstVideoFormat fmt;
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guint new_frame_size;
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GstCaps *new_caps = gst_caps_copy (self->request_caps);
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if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED) &&
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self->fields == GST_DEINTERLACE_ALL
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&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
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gint n, d;
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GstStructure *s = gst_caps_get_structure (new_caps, 0);
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gst_structure_get_fraction (s, "framerate", &n, &d);
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if (!gst_fraction_double (&n, &d, TRUE)) {
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gst_object_unref (self);
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gst_caps_unref (new_caps);
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return GST_FLOW_OK;
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}
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gst_structure_set (s, "framerate", GST_TYPE_FRACTION, n, d, NULL);
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}
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if (G_UNLIKELY (!gst_video_format_parse_caps (new_caps, &fmt, &width,
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&height))) {
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gst_object_unref (self);
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gst_caps_unref (new_caps);
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return GST_FLOW_OK;
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}
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new_frame_size = gst_video_format_get_size (fmt, width, height);
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*buf = gst_buffer_try_new_and_alloc (new_frame_size);
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if (G_UNLIKELY (!*buf)) {
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ret = GST_FLOW_ERROR;
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} else {
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gst_buffer_set_caps (*buf, new_caps);
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gst_caps_unref (self->request_caps);
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self->request_caps = NULL;
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gst_caps_unref (new_caps);
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}
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}
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gst_object_unref (self);
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return ret;
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}
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static gboolean
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plugin_init (GstPlugin * plugin)
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{
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@ -261,6 +261,12 @@ struct _GstDeinterlace
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/* QoS stuff */
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gdouble proportion;
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GstClockTime earliest_time;
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/* Upstream negotiation stuff */
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GstCaps *sink_caps;
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GstCaps *src_caps;
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GstCaps *request_caps;
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};
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struct _GstDeinterlaceClass
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