VideoDataOutput::VideoDataOutput(Backend *backend, QObject *parent)
: QObject(parent),
MediaNode(backend, VideoSink),
m_frontend(0)
{
static int count = 0;
m_name = "VideoDataOutput" + QString::number(count++);
m_queue = gst_bin_new(NULL);
gst_object_ref_sink(GST_OBJECT(m_queue));
GstElement* sink = gst_element_factory_make("fakesink", NULL);
GstElement* queue = gst_element_factory_make("queue", NULL);
GstElement* convert = gst_element_factory_make("videoconvert", NULL);
g_signal_connect(sink, "handoff", G_CALLBACK(processBuffer), this);
g_object_set(G_OBJECT(sink), "signal-handoffs", true, NULL);
// Save ourselves a metric crapton of work by simply requesting
// a format native to Qt.
GstCaps *caps = gst_caps_new_simple("video/x-raw",
"format = (string)", G_TYPE_STRING, GST_VIDEO_NE(RGB),
NULL);
gst_bin_add_many(GST_BIN(m_queue), sink, convert, queue, NULL);
gst_element_link(queue, convert);
gst_element_link_filtered(convert, sink, caps);
gst_caps_unref(caps);
GstPad *inputpad = gst_element_get_static_pad(queue, "sink");
gst_element_add_pad(m_queue, gst_ghost_pad_new("sink", inputpad));
gst_object_unref(inputpad);
g_object_set(G_OBJECT(sink), "sync", true, NULL);
m_isValid = true;
}
static GstCaps *
gst_shape_wipe_mask_sink_getcaps (GstPad * pad, GstCaps * filter)
{
GstShapeWipe *self = GST_SHAPE_WIPE (gst_pad_get_parent (pad));
GstCaps *ret, *tmp;
guint i, n;
if (gst_pad_has_current_caps (pad))
return gst_pad_get_current_caps (pad);
tmp = gst_pad_peer_query_caps (self->video_sinkpad, NULL);
if (tmp) {
ret =
gst_caps_intersect (tmp,
gst_pad_get_pad_template_caps (self->video_sinkpad));
gst_caps_unref (tmp);
} else {
ret = gst_pad_get_pad_template_caps (self->video_sinkpad);
}
GST_LOG_OBJECT (pad, "video sink accepted caps: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
tmp = gst_pad_peer_query_caps (self->srcpad, NULL);
GST_LOG_OBJECT (pad, "srcpad accepted caps: %" GST_PTR_FORMAT, ret);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (ret, tmp);
gst_caps_unref (ret);
gst_caps_unref (tmp);
ret = intersection;
}
GST_LOG_OBJECT (pad, "intersection: %" GST_PTR_FORMAT, ret);
if (gst_caps_is_empty (ret))
goto done;
n = gst_caps_get_size (ret);
tmp = gst_caps_new_empty ();
for (i = 0; i < n; i++) {
GstStructure *s = gst_caps_get_structure (ret, i);
GstStructure *t;
gst_structure_set_name (s, "video/x-raw");
gst_structure_remove_fields (s, "format", "framerate", NULL);
if (self->vinfo.width && self->vinfo.height)
gst_structure_set (s, "width", G_TYPE_INT, self->vinfo.width, "height",
G_TYPE_INT, self->vinfo.height, NULL);
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
t = gst_structure_copy (s);
gst_structure_set (s, "format", G_TYPE_STRING, GST_VIDEO_NE (GRAY16), NULL);
gst_structure_set (t, "format", G_TYPE_STRING, "GRAY8", NULL);
gst_caps_append_structure (tmp, t);
}
gst_caps_append (ret, tmp);
tmp = gst_pad_peer_query_caps (pad, NULL);
GST_LOG_OBJECT (pad, "peer accepted caps: %" GST_PTR_FORMAT, tmp);
if (tmp) {
GstCaps *intersection;
intersection = gst_caps_intersect (tmp, ret);
gst_caps_unref (tmp);
gst_caps_unref (ret);
ret = intersection;
}
done:
gst_object_unref (self);
GST_LOG_OBJECT (pad, "Returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static GstStaticPadTemplate video_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("video_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, ARGB, BGRA, ABGR, RGBA }")));
static GstStaticPadTemplate mask_sink_pad_template =
GST_STATIC_PAD_TEMPLATE ("mask_sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw, "
"format = (string) GRAY8, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = 0/1 ; "
"video/x-raw, " "format = (string) " GST_VIDEO_NE (GRAY16) ", "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", " "framerate = 0/1"));
static GstStaticPadTemplate src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, ARGB, BGRA, ABGR, RGBA }")));
GST_DEBUG_CATEGORY_STATIC (gst_shape_wipe_debug);
#define GST_CAT_DEFAULT gst_shape_wipe_debug
#define gst_shape_wipe_parent_class parent_class
G_DEFINE_TYPE (GstShapeWipe, gst_shape_wipe, GST_TYPE_ELEMENT);
static void
gst_shape_wipe_class_init (GstShapeWipeClass * klass)
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdshowvideosrc.h"
#include <gst/video/video.h>
GST_DEBUG_CATEGORY_STATIC (dshowvideosrc_debug);
#define GST_CAT_DEFAULT dshowvideosrc_debug
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw, format=(string) { "
GST_VIDEO_NE(BGR) ", "
GST_VIDEO_NE(I420) ", "
GST_VIDEO_NE(YUY2) ", "
GST_VIDEO_NE(UYVY) " }, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", "
"framerate = " GST_VIDEO_FPS_RANGE "; "
"video/x-dv, "
"format= (string) DVSD, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", "
"framerate = " GST_VIDEO_FPS_RANGE ", "
"systemstream = (boolean) { TRUE, FALSE }; "
"image/jpeg, "
