mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-28 03:00:35 +00:00
Code Issues 1 Projects Releases Wiki Activity

deinterlace: add alternate support

Browse source 
In this mode each field is carried using its own buffer.
Allow deinterlace to negotiate caps with the Interlaced feature and
adjust the algorithm fetching lines.

Fix #620
This commit is contained in:
Guillaume Desmottes 2020-01-27 12:29:18 +05:30 committed by GStreamer Merge Bot
parent b3d96e06c6
commit d43ad6e029
2 changed files with 63 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

64
gst/deinterlace/gstdeinterlace.c
View file

@ -1056,6 +1056,7 @@ gst_deinterlace_get_buffer_state (GstDeinterlace * self, GstVideoFrame * frame,
#define MODE_TO_STRING(m) ((m) == GST_VIDEO_INTERLACE_MODE_MIXED ? "MIXED" : \
(m) == GST_VIDEO_INTERLACE_MODE_INTERLEAVED ? "I" : \
(m) == GST_VIDEO_INTERLACE_MODE_ALTERNATE ? "A" : \
(m) == GST_VIDEO_INTERLACE_MODE_FIELDS ? "FIELDS" : "P")
static void
@ -2398,6 +2399,22 @@ gst_deinterlace_caps_double_framerate (GstCaps * caps, gboolean half)
return caps;
}
static GstCaps *
dup_caps_with_alternate (GstCaps * caps)
{
GstCaps *with_alternate;
GstCapsFeatures *features;
with_alternate = gst_caps_copy (caps);
features = gst_caps_features_new (GST_CAPS_FEATURE_FORMAT_INTERLACED, NULL);
gst_caps_set_features_simple (with_alternate, features);
gst_caps_set_simple (with_alternate, "interlace-mode", G_TYPE_STRING,
"alternate", NULL);
return with_alternate;
}
static GstCaps *
gst_deinterlace_getcaps (GstDeinterlace * self, GstPad * pad, GstCaps * filter)
{
@ -2518,6 +2535,17 @@ gst_deinterlace_getcaps (GstDeinterlace * self, GstPad * pad, GstCaps * filter)
gst_caps_unref (caps);
caps = NULL;
if (pad == self->sinkpad) {
GstCaps *can_deinterlace;
tmp = gst_static_caps_get (&deinterlace_caps);
can_deinterlace = gst_caps_intersect (ret, tmp);
gst_caps_unref (tmp);
ret = gst_caps_merge (ret, dup_caps_with_alternate (can_deinterlace));
gst_caps_unref (can_deinterlace);
}
done:
if (filter) {
@ -2653,7 +2681,7 @@ gst_deinterlace_do_bufferpool (GstDeinterlace * self, GstCaps * outcaps)
static gboolean
gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
{
GstCaps *srccaps = NULL;
GstCaps *srccaps = NULL, *caps_no_feat = NULL;
GstVideoInterlaceMode interlacing_mode;
gint fps_n, fps_d;
GstCaps *peercaps, *current_caps;
@ -2713,6 +2741,20 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
GST_VIDEO_INFO_WIDTH (&self->vinfo),
GST_VIDEO_INFO_HEIGHT (&self->vinfo));
if (GST_VIDEO_INFO_INTERLACE_MODE (&self->vinfo) ==
GST_VIDEO_INTERLACE_MODE_ALTERNATE) {
/* alternate interlace mode uses a caps feature, remove it when interesecting caps
* and setting the src pad caps. */
GstCapsFeatures *features;
caps_no_feat = gst_caps_copy (caps);
features = gst_caps_get_features (caps_no_feat, 0);
gst_caps_features_remove (features, GST_CAPS_FEATURE_FORMAT_INTERLACED);
} else {
caps_no_feat = gst_caps_ref (caps);
}
fps_n = GST_VIDEO_INFO_FPS_N (&self->vinfo);
fps_d = GST_VIDEO_INFO_FPS_D (&self->vinfo);
@ -2723,7 +2765,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
} else if (self->mode == GST_DEINTERLACE_MODE_INTERLACED) {
GstCaps *tmp = gst_static_caps_get (&deinterlace_caps);
if (!gst_caps_can_intersect (caps, tmp)) {
if (!gst_caps_can_intersect (caps_no_feat, tmp)) {
gst_caps_unref (tmp);
GST_ERROR_OBJECT (self, "Unsupported caps for mode=interlaced");
goto invalid_caps;
@ -2740,7 +2782,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
GST_DEBUG_OBJECT (self,
"Passthrough because mode=auto and progressive caps");
self->passthrough = TRUE;
} else if (gst_caps_can_intersect (caps, tmp)) {
} else if (gst_caps_can_intersect (caps_no_feat, tmp)) {
if (peercaps) {
GstCaps *allowed_caps;
GstCaps *tmp2;
@ -2800,7 +2842,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
if (!self->passthrough) {
if (self->pattern_lock) {
srccaps = gst_caps_copy (caps);
srccaps = gst_caps_copy (caps_no_feat);
if (self->pattern != -1
&& G_UNLIKELY (!gst_util_fraction_multiply (fps_n, fps_d,
telecine_patterns[self->pattern].ratio_n,
@ -2813,17 +2855,17 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
|| self->low_latency == 0) {
/* in high latency pattern locking mode if we don't have a pattern lock,
* the sink pad caps are the best we know */
srccaps = gst_caps_copy (caps);
srccaps = gst_caps_copy (caps_no_feat);
} else if (self->low_latency > 0
&& interlacing_mode == GST_VIDEO_INTERLACE_MODE_MIXED
&& self->pattern == -1) {
/* for initial buffers of a telecine pattern, until there is a lock we
* we output naïvely adjusted timestamps in low-latency pattern locking
* mode */
srccaps = gst_caps_copy (caps);
srccaps = gst_caps_copy (caps_no_feat);
gst_caps_set_simple (srccaps, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
} else if (self->user_set_fields == GST_DEINTERLACE_FIELDS_AUTO) {
srccaps = gst_caps_copy (caps);
srccaps = gst_caps_copy (caps_no_feat);
if (peercaps) {
gboolean can_be_tf = FALSE;
@ -2861,7 +2903,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
}
} else {
self->fields = self->user_set_fields;
srccaps = gst_caps_copy (caps);
srccaps = gst_caps_copy (caps_no_feat);
if (self->fields == GST_DEINTERLACE_ALL)
srccaps = gst_deinterlace_caps_double_framerate (srccaps, FALSE);
}
@ -2873,7 +2915,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
gst_deinterlace_set_method (self, self->method_id);
gst_deinterlace_method_setup (self->method, &self->vinfo);
} else {
srccaps = gst_caps_ref (caps);
srccaps = gst_caps_ref (caps_no_feat);
}
if (fps_n != 0) {
@ -2894,6 +2936,7 @@ gst_deinterlace_setcaps (GstDeinterlace * self, GstPad * pad, GstCaps * caps)
if (peercaps)
gst_caps_unref (peercaps);
gst_caps_unref (srccaps);
g_clear_pointer (&caps_no_feat, gst_caps_unref);
return TRUE;
@ -2901,6 +2944,7 @@ invalid_caps:
{
if (peercaps)
gst_caps_unref (peercaps);
g_clear_pointer (&caps_no_feat, gst_caps_unref);
GST_ERROR_OBJECT (pad, "Invalid caps: %" GST_PTR_FORMAT, caps);
gst_pad_mark_reconfigure (self->srcpad);
return FALSE;
@ -2911,6 +2955,7 @@ set_caps_failed:
if (peercaps)
gst_caps_unref (peercaps);
gst_caps_unref (srccaps);
g_clear_pointer (&caps_no_feat, gst_caps_unref);
gst_pad_mark_reconfigure (self->srcpad);
return FALSE;
}
@ -2920,6 +2965,7 @@ no_bufferpool:
if (peercaps)
gst_caps_unref (peercaps);
gst_caps_unref (srccaps);
g_clear_pointer (&caps_no_feat, gst_caps_unref);
gst_pad_mark_reconfigure (self->srcpad);
return FALSE;
}

8
gst/deinterlace/gstdeinterlacemethod.c
View file

@ -329,6 +329,14 @@ get_line (LinesGetter * lg, gint field_offset, guint plane, gint line,
frame = lg->history[idx].frame;
g_assert (frame);
if (GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_TOP_FIELD) ||
GST_VIDEO_FRAME_FLAG_IS_SET (frame, GST_VIDEO_FRAME_FLAG_BOTTOM_FIELD)) {
/* Alternate frame containing a single field, adjust the line index */
line /= 2;
if (line_offset != 1)
line_offset /= 2;
}
frame_height = GST_VIDEO_FRAME_COMP_HEIGHT (frame, plane);
line += line_offset;