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interlace: Allow interlaced sink caps, do passthrough

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Allow interlace to receive already interlaced content, if compatible with its
configuration. In that case, it will just do passthrough.

https://bugzilla.gnome.org/show_bug.cgi?id=764036
This commit is contained in:
Vivia Nikolaidou 2016-03-22 19:27:39 +02:00 committed by Sebastian Dröge
parent bbcd659f5d
commit e6c3446d01
1 changed files with 30 additions and 3 deletions
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33
gst/interlace/gstinterlace.c
View file

@ -104,6 +104,7 @@ struct _GstInterlace
GstClockTime timebase;
int fields_since_timebase;
guint pattern_offset; /* initial offset into the pattern */
gboolean passthrough;
};
struct _GstInterlaceClass
@ -182,7 +183,7 @@ GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
("{AYUV,YUY2,UYVY,I420,YV12,Y42B,Y444,NV12,NV21}")
",interlace-mode=progressive")
)
);
GType gst_interlace_get_type (void);
@ -267,6 +268,7 @@ gst_interlace_reset (GstInterlace * interlace)
interlace->phase_index = interlace->pattern_offset;
interlace->timebase = GST_CLOCK_TIME_NONE;
interlace->field_index = 0;
interlace->passthrough = FALSE;
if (interlace->stored_frame) {
gst_buffer_unref (interlace->stored_frame);
interlace->stored_frame = NULL;
@ -392,8 +394,21 @@ gst_interlace_setcaps (GstInterlace * interlace, GstCaps * caps)
gst_caps_set_simple (othercaps, "interlace-mode", G_TYPE_STRING,
"interleaved", NULL);
}
gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION,
interlace->src_fps_n, interlace->src_fps_d, NULL);
if (gst_caps_can_intersect (caps, othercaps)) {
interlace->passthrough = TRUE;
} else {
if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
GST_ERROR_OBJECT (interlace,
"Caps %" GST_PTR_FORMAT " not compatible with %" GST_PTR_FORMAT, caps,
othercaps);
gst_caps_unref (othercaps);
goto caps_error;
}
interlace->passthrough = FALSE;
gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION,
interlace->src_fps_n, interlace->src_fps_d, NULL);
}
ret = gst_pad_set_caps (interlace->srcpad, othercaps);
gst_caps_unref (othercaps);
@ -686,6 +701,7 @@ gst_interlace_getcaps (GstPad * pad, GstInterlace * interlace, GstCaps * filter)
}
icaps = gst_caps_make_writable (icaps);
tcaps = gst_caps_copy (icaps);
if (interlace->pattern > GST_INTERLACE_PATTERN_2_2) {
mode = "mixed";
} else {
@ -693,6 +709,13 @@ gst_interlace_getcaps (GstPad * pad, GstInterlace * interlace, GstCaps * filter)
}
gst_caps_set_simple (icaps, "interlace-mode", G_TYPE_STRING,
pad == interlace->srcpad ? mode : "progressive", NULL);
if (pad == interlace->sinkpad) {
gst_caps_set_simple (tcaps, "interlace-mode", G_TYPE_STRING, mode, NULL);
icaps = gst_caps_merge (icaps, tcaps);
tcaps = NULL;
} else {
gst_caps_unref (tcaps);
}
icaps =
gst_interlace_caps_double_framerate (icaps, (pad == interlace->srcpad));
@ -837,6 +860,10 @@ gst_interlace_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_FLAG_ONEFIELD) ? "onefield"
: "");
if (interlace->passthrough) {
return gst_pad_push (interlace->srcpad, buffer);
}
if (GST_BUFFER_FLAGS (buffer) & GST_BUFFER_FLAG_DISCONT) {
GST_DEBUG ("discont");