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#include <gst/gst.h>
#include <gst/video/video.h>
#include "msink.h"
static GstStaticPadTemplate sinktemplate
= GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420, YV12 }") ";" \
GST_VIDEO_CAPS_RGBx ";" \
GST_VIDEO_CAPS_BGRx ";" \
GST_VIDEO_CAPS_RGB ";" \
GST_VIDEO_CAPS_BGR));
static GstStaticPadTemplate sinktemplate_rgb
= GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB));
/*GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";" \
GST_VIDEO_CAPS_BGRx ";" \
GST_VIDEO_CAPS_RGB ";" \
GST_VIDEO_CAPS_BGR));*/
static GstStaticPadTemplate sinktemplate_yuv
= GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ IYUV, I420, YV12 }")));
G_DEFINE_TYPE (MGstVideoSink, m_gst_video_sink, GST_TYPE_BASE_SINK)
static void
m_gst_video_sink_init (MGstVideoSink *sink)
{
sink->w = sink->h = 0;
sink->frameskip = 1;
}
static GstFlowReturn
m_gst_video_sink_render (GstBaseSink *bsink, GstBuffer *buffer)
{
MGstVideoSink *sink;
static int n = 1;
sink = M_GST_VIDEO_SINK (bsink);
if (buffer == NULL || G_UNLIKELY (!GST_IS_BUFFER (buffer))) {
return FALSE;
}
// take ownership
gst_buffer_ref (buffer);
if (--n==0) {
sink->frame_cb (buffer, sink->user_data);
n = sink->frameskip;
}
else {
gst_buffer_unref (buffer);
}
return GST_FLOW_OK;
}
static gboolean
m_gst_video_sink_set_caps (GstBaseSink *bsink,
GstCaps *caps)
{
MGstVideoSink *sink;
GstStructure *structure;
sink = M_GST_VIDEO_SINK (bsink);
if (sink->yuv_mode) {
gst_caps_intersect
(gst_static_pad_template_get_caps (&sinktemplate_yuv),
caps);
} else {
gst_caps_intersect
(gst_static_pad_template_get_caps (&sinktemplate_rgb),
caps);
}
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "width", &sink->w);
gst_structure_get_int (structure, "height", &sink->h);
//sink->ready_cb(sink->user_data);
return TRUE;
}
static GstCaps*
m_gst_video_sink_get_caps (GstBaseSink *bsink)
{
MGstVideoSink *sink;
sink = M_GST_VIDEO_SINK (bsink);
if (sink->yuv_mode)
return gst_static_pad_template_get_caps (&sinktemplate_yuv);
else
return gst_static_pad_template_get_caps (&sinktemplate_rgb);
}
static void
m_gst_video_sink_class_init (MGstVideoSinkClass *klass)
{
GstBaseSinkClass *gstbase_sink_class = GST_BASE_SINK_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gstbase_sink_class->render = m_gst_video_sink_render;
gstbase_sink_class->preroll = m_gst_video_sink_render;
gstbase_sink_class->set_caps = m_gst_video_sink_set_caps;
gstbase_sink_class->get_caps = m_gst_video_sink_get_caps;
gst_element_class_add_pad_template
(element_class,
gst_static_pad_template_get (&sinktemplate));
}
GstElement *
m_gst_video_sink_new ()
{
GstElement *sink = g_object_new (M_GST_TYPE_VIDEO_SINK, NULL);
M_GST_VIDEO_SINK (sink)->yuv_mode = 0;
return sink;
}
GstElement *
m_gst_video_sink_yuv_new ()
{
GstElement *sink = g_object_new (M_GST_TYPE_VIDEO_SINK, NULL);
M_GST_VIDEO_SINK (sink)->yuv_mode = 1;
return sink;
}
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