Commit ceea8dc1 authored by Sebastian Dröge's avatar Sebastian Dröge
Browse files

deinterlace: Implement upstream negotation

parent cd33adbd
......@@ -382,6 +382,8 @@ static gboolean gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_deinterlace_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_deinterlace_sink_query (GstPad * pad, GstQuery * query);
static GstFlowReturn gst_deinterlace_chain (GstPad * pad, GstBuffer * buffer);
static GstFlowReturn gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
static GstStateChangeReturn gst_deinterlace_change_state (GstElement * element,
GstStateChange transition);
......@@ -714,6 +716,8 @@ gst_deinterlace_init (GstDeinterlace * self, GstDeinterlaceClass * klass)
GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
gst_pad_set_query_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_sink_query));
gst_pad_set_bufferalloc_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_alloc_buffer));
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
self->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
......@@ -723,10 +727,10 @@ gst_deinterlace_init (GstDeinterlace * self, GstDeinterlaceClass * klass)
GST_DEBUG_FUNCPTR (gst_deinterlace_src_query_types));
gst_pad_set_query_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_src_query));
gst_pad_set_setcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
gst_pad_set_getcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
gst_pad_set_setcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
gst_element_no_more_pads (GST_ELEMENT (self));
......@@ -777,6 +781,18 @@ gst_deinterlace_reset (GstDeinterlace * self)
gst_segment_init (&self->segment, GST_FORMAT_TIME);
if (self->sink_caps)
gst_caps_unref (self->sink_caps);
self->sink_caps = NULL;
if (self->src_caps)
gst_caps_unref (self->src_caps);
self->src_caps = NULL;
if (self->request_caps)
gst_caps_unref (self->request_caps);
self->request_caps = NULL;
gst_deinterlace_reset_history (self);
gst_deinterlace_reset_qos (self);
......@@ -1113,12 +1129,26 @@ gst_deinterlace_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (self, "deinterlacing top field");
/* create new buffer */
ret = gst_pad_alloc_buffer_and_set_caps (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size,
GST_PAD_CAPS (self->srcpad), &outbuf);
ret = gst_pad_alloc_buffer (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
self->request_caps);
gst_buffer_unref (outbuf);
outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
if (!outbuf)
return GST_FLOW_ERROR;
gst_buffer_set_caps (outbuf, self->src_caps);
}
g_return_val_if_fail (self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method) >= 0,
GST_FLOW_ERROR);
......@@ -1176,12 +1206,26 @@ gst_deinterlace_chain (GstPad * pad, GstBuffer * buf)
GST_DEBUG_OBJECT (self, "deinterlacing bottom field");
/* create new buffer */
ret = gst_pad_alloc_buffer_and_set_caps (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size,
GST_PAD_CAPS (self->srcpad), &outbuf);
ret = gst_pad_alloc_buffer (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
self->request_caps);
gst_buffer_unref (outbuf);
outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
if (!outbuf)
return GST_FLOW_ERROR;
gst_buffer_set_caps (outbuf, self->src_caps);
}
g_return_val_if_fail (self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method) >= 0,
GST_FLOW_ERROR);
......@@ -1305,6 +1349,7 @@ gst_deinterlace_getcaps (GstPad * pad)
peercaps = gst_pad_peer_get_caps (otherpad);
if (peercaps) {
GST_DEBUG_OBJECT (pad, "Peer has caps %" GST_PTR_FORMAT, peercaps);
ret = gst_caps_intersect (ourcaps, peercaps);
gst_caps_unref (peercaps);
} else {
......@@ -1468,7 +1513,6 @@ gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps)
if (!gst_pad_set_caps (otherpad, othercaps))
goto caps_not_accepted;
gst_caps_unref (othercaps);
self->field_height = self->frame_height / 2;
......@@ -1494,7 +1538,18 @@ gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps)
gst_util_uint64_scale (GST_SECOND, self->frame_rate_d,
2 * self->frame_rate_n);
if (pad == self->sinkpad) {
gst_caps_replace (&self->sink_caps, caps);
gst_caps_replace (&self->src_caps, othercaps);
} else {
gst_caps_replace (&self->src_caps, caps);
gst_caps_replace (&self->sink_caps, othercaps);
}
GST_DEBUG_OBJECT (pad, "Set caps: %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (pad, "Other caps: %" GST_PTR_FORMAT, othercaps);
gst_caps_unref (othercaps);
done:
......@@ -1780,6 +1835,78 @@ gst_deinterlace_src_query_types (GstPad * pad)
return types;
}
static GstFlowReturn
gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
GstFlowReturn ret = GST_FLOW_OK;
*buf = NULL;
GST_DEBUG_OBJECT (pad, "alloc with caps %" GST_PTR_FORMAT ", size %u", caps,
size);
if (self->still_frame_mode ||
self->mode == GST_DEINTERLACE_MODE_DISABLED || (!self->interlaced
&& self->mode != GST_DEINTERLACE_MODE_INTERLACED)) {
ret = gst_pad_alloc_buffer (self->srcpad, offset, size, caps, buf);
} else if (G_LIKELY (!self->request_caps)) {
*buf = gst_buffer_try_new_and_alloc (size);
if (G_UNLIKELY (!*buf)) {
ret = GST_FLOW_ERROR;
} else {
gst_buffer_set_caps (*buf, caps);
GST_BUFFER_OFFSET (*buf) = offset;
}
} else {
gint width, height;
GstVideoFormat fmt;
guint new_frame_size;
GstCaps *new_caps = gst_caps_copy (self->request_caps);
if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED) &&
self->fields == GST_DEINTERLACE_ALL
&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
gint n, d;
GstStructure *s = gst_caps_get_structure (new_caps, 0);
gst_structure_get_fraction (s, "framerate", &n, &d);
if (!gst_fraction_double (&n, &d, TRUE)) {
gst_object_unref (self);
gst_caps_unref (new_caps);
return GST_FLOW_OK;
}
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, n, d, NULL);
}
if (G_UNLIKELY (!gst_video_format_parse_caps (new_caps, &fmt, &width,
&height))) {
gst_object_unref (self);
gst_caps_unref (new_caps);
return GST_FLOW_OK;
}
new_frame_size = gst_video_format_get_size (fmt, width, height);
*buf = gst_buffer_try_new_and_alloc (new_frame_size);
if (G_UNLIKELY (!*buf)) {
ret = GST_FLOW_ERROR;
} else {
gst_buffer_set_caps (*buf, new_caps);
gst_caps_unref (self->request_caps);
self->request_caps = NULL;
gst_caps_unref (new_caps);
}
}
gst_object_unref (self);
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
......
......@@ -261,6 +261,12 @@ struct _GstDeinterlace
/* QoS stuff */
gdouble proportion;
GstClockTime earliest_time;
/* Upstream negotiation stuff */
GstCaps *sink_caps;
GstCaps *src_caps;
GstCaps *request_caps;
};
struct _GstDeinterlaceClass
......
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