gstreamer/subprojects/gst-plugins-bad/sys/va/gstvadeinterlace.c

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/* GStreamer
* Copyright (C) 2021 Igalia, S.L.
* Author: Víctor Jáquez <vjaquez@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the0
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-vadeinterlace
* @title: vadeinterlace
* @short_description: A VA-API base video deinterlace filter
*
* vadeinterlace deinterlaces interlaced video frames to progressive
* video frames. This element and its deinterlacing methods depend on
* the installed and chosen [VA-API](https://01.org/linuxmedia/vaapi)
* driver, but it's usually avaialble with bob (linear) method.
*
* This element doesn't change the caps features, it only negotiates
* the same dowstream and upstream.
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=interlaced_video.mp4 ! parsebin ! vah264dec ! vadeinterlace ! vapostproc ! autovideosink
* ```
*
* Since: 1.20
*
*/
/* ToDo:
*
* + field property to select only one field and keep the same framerate
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvadeinterlace.h"
#include <gst/va/gstva.h>
#include <gst/video/video.h>
#include <va/va_drmcommon.h>
#include "gstvabasetransform.h"
#include "gstvacaps.h"
#include "gstvadisplay_priv.h"
#include "gstvafilter.h"
GST_DEBUG_CATEGORY_STATIC (gst_va_deinterlace_debug);
#define GST_CAT_DEFAULT gst_va_deinterlace_debug
#define GST_VA_DEINTERLACE(obj) ((GstVaDeinterlace *) obj)
#define GST_VA_DEINTERLACE_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_FROM_INSTANCE (obj), GstVaDeinterlaceClass))
#define GST_VA_DEINTERLACE_CLASS(klass) ((GstVaDeinterlaceClass *) klass)
typedef struct _GstVaDeinterlace GstVaDeinterlace;
typedef struct _GstVaDeinterlaceClass GstVaDeinterlaceClass;
enum CurrField
{
UNKNOWN_FIELD,
FIRST_FIELD,
SECOND_FIELD,
FINISHED,
};
struct _GstVaDeinterlaceClass
{
/* GstVideoFilter overlaps functionality */
GstVaBaseTransformClass parent_class;
};
struct _GstVaDeinterlace
{
GstVaBaseTransform parent;
gboolean rebuild_filters;
VAProcDeinterlacingType method;
guint num_backward_references;
GstBuffer *history[8];
gint hcount;
gint hdepth;
gint hcurr;
enum CurrField curr_field;
/* Calculated buffer duration by using upstream framerate */
GstClockTime default_duration;
};
static GstElementClass *parent_class = NULL;
struct CData
{
gchar *render_device_path;
gchar *description;
};
/* *INDENT-OFF* */
static const gchar *caps_str =
GST_VIDEO_CAPS_MAKE_WITH_FEATURES (GST_CAPS_FEATURE_MEMORY_VA,
"{ NV12, I420, YV12, YUY2, RGBA, BGRA, P010_10LE, ARGB, ABGR }") " ;"
GST_VIDEO_CAPS_MAKE ("{ VUYA, GRAY8, NV12, NV21, YUY2, UYVY, YV12, "
"I420, P010_10LE, RGBA, BGRA, ARGB, ABGR }");
/* *INDENT-ON* */
static void
_reset_history (GstVaDeinterlace * self)
{
gint i;
for (i = 0; i < self->hcount; i++)
gst_buffer_unref (self->history[i]);
self->hcount = 0;
}
static void
gst_va_deinterlace_dispose (GObject * object)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (object);
_reset_history (self);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_va_deinterlace_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (object);
guint method;
GST_OBJECT_LOCK (object);
switch (prop_id) {
case GST_VA_FILTER_PROP_DEINTERLACE_METHOD:
method = g_value_get_enum (value);
if (method != self->method) {
self->method = method;
g_atomic_int_set (&self->rebuild_filters, TRUE);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (object);
}
static void
gst_va_deinterlace_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (object);
GST_OBJECT_LOCK (object);
switch (prop_id) {
case GST_VA_FILTER_PROP_DEINTERLACE_METHOD:{
g_value_set_enum (value, self->method);
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (object);
}
static GstFlowReturn
gst_va_deinterlace_submit_input_buffer (GstBaseTransform * trans,
gboolean is_discont, GstBuffer * input)
{
GstVaBaseTransform *btrans = GST_VA_BASE_TRANSFORM (trans);
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstBuffer *buf, *inbuf;
GstFlowReturn ret;
gint i;
/* Let baseclass handle QoS first */
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->submit_input_buffer (trans,
is_discont, input);
if (ret != GST_FLOW_OK)
return ret;
if (gst_base_transform_is_passthrough (trans))
return ret;
/* at this moment, baseclass must hold queued_buf */
g_assert (trans->queued_buf != NULL);
/* Check if we can use this buffer directly. If not, copy this into
* our fallback buffer */
buf = trans->queued_buf;
trans->queued_buf = NULL;
ret = gst_va_base_transform_import_buffer (btrans, buf, &inbuf);
if (ret != GST_FLOW_OK)
return ret;
gst_buffer_unref (buf);
if (self->hcount < self->hdepth) {
self->history[self->hcount++] = inbuf;
} else {
gst_clear_buffer (&self->history[0]);
for (i = 0; i + 1 < self->hcount; i++)
self->history[i] = self->history[i + 1];
self->history[i] = inbuf;
}
if (self->history[self->hcurr])
self->curr_field = FIRST_FIELD;
return ret;
}
static void
_build_filter (GstVaDeinterlace * self)
{
GstVaBaseTransform *btrans = GST_VA_BASE_TRANSFORM (self);
guint i, num_caps;
VAProcFilterCapDeinterlacing *caps;
guint32 num_forward_references;
caps = gst_va_filter_get_filter_caps (btrans->filter,
VAProcFilterDeinterlacing, &num_caps);
if (!caps)
return;
for (i = 0; i < num_caps; i++) {
if (caps[i].type != self->method)
continue;
if (gst_va_filter_add_deinterlace_buffer (btrans->filter, self->method,
&num_forward_references, &self->num_backward_references)) {
self->hdepth = num_forward_references + self->num_backward_references + 1;
if (self->hdepth > 8) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
("Pipeline requires too many references: (%u forward, %u backward)",
num_forward_references, self->num_backward_references), (NULL));
}
GST_INFO_OBJECT (self, "References for method: %u forward / %u backward",
num_forward_references, self->num_backward_references);
self->hcurr = num_forward_references;
return;
}
}
GST_ELEMENT_ERROR (self, LIBRARY, SETTINGS,
("Invalid deinterlacing method: %d", self->method), (NULL));
}
static void
gst_va_deinterlace_rebuild_filters (GstVaDeinterlace * self)
{
GstVaBaseTransform *btrans = GST_VA_BASE_TRANSFORM (self);
if (!g_atomic_int_get (&self->rebuild_filters))
return;
_reset_history (self);
gst_va_filter_drop_filter_buffers (btrans->filter);
_build_filter (self);
/* extra number of buffers for propose_allocation */
if (self->hdepth > btrans->extra_min_buffers) {
btrans->extra_min_buffers = self->hdepth;
gst_base_transform_reconfigure_sink (GST_BASE_TRANSFORM (self));
}
g_atomic_int_set (&self->rebuild_filters, FALSE);
}
static gboolean
gst_va_deinterlace_set_info (GstVaBaseTransform * btrans, GstCaps * incaps,
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
{
GstBaseTransform *trans = GST_BASE_TRANSFORM (btrans);
GstVaDeinterlace *self = GST_VA_DEINTERLACE (btrans);
switch (GST_VIDEO_INFO_INTERLACE_MODE (in_info)) {
case GST_VIDEO_INTERLACE_MODE_PROGRESSIVE:
/* Nothing to do */
gst_base_transform_set_passthrough (trans, TRUE);
return TRUE;
break;
case GST_VIDEO_INTERLACE_MODE_ALTERNATE:
case GST_VIDEO_INTERLACE_MODE_FIELDS:
GST_ERROR_OBJECT (self, "Unsupported interlace mode.");
return FALSE;
break;
default:
break;
}
/* Calculate expected buffer duration. We might need to reference this value
* when buffer duration is unknown */
if (GST_VIDEO_INFO_FPS_N (in_info) > 0 && GST_VIDEO_INFO_FPS_D (in_info) > 0) {
self->default_duration =
gst_util_uint64_scale_int (GST_SECOND, GST_VIDEO_INFO_FPS_D (in_info),
GST_VIDEO_INFO_FPS_N (in_info));
} else {
/* Assume 25 fps. We need this for reporting latency at least */
self->default_duration = gst_util_uint64_scale_int (GST_SECOND, 1, 25);
}
if (gst_va_filter_set_video_info (btrans->filter, in_info, out_info)) {
g_atomic_int_set (&self->rebuild_filters, TRUE);
gst_base_transform_set_passthrough (trans, FALSE);
gst_va_deinterlace_rebuild_filters (self);
return TRUE;
}
return FALSE;
}
static void
gst_va_deinterlace_before_transform (GstBaseTransform * trans,
GstBuffer * inbuf)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstClockTime ts, stream_time;
ts = GST_BUFFER_TIMESTAMP (inbuf);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, ts);
GST_TRACE_OBJECT (self, "sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (ts));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (self), stream_time);
gst_va_deinterlace_rebuild_filters (self);
}
static void
_set_field (GstVaDeinterlace * self, guint32 * surface_flags)
{
GstBaseTransform *trans = GST_BASE_TRANSFORM (self);
if (trans->segment.rate < 0) {
if ((self->curr_field == FIRST_FIELD
&& (*surface_flags & VA_TOP_FIELD_FIRST))
|| (self->curr_field == SECOND_FIELD
&& (*surface_flags & VA_BOTTOM_FIELD_FIRST))) {
*surface_flags |= VA_BOTTOM_FIELD;
} else {
*surface_flags |= VA_TOP_FIELD;
}
} else {
if ((self->curr_field == FIRST_FIELD
&& (*surface_flags & VA_BOTTOM_FIELD_FIRST))
|| (self->curr_field == SECOND_FIELD
&& (*surface_flags & VA_TOP_FIELD_FIRST))) {
*surface_flags |= VA_BOTTOM_FIELD;
} else {
*surface_flags |= VA_TOP_FIELD;
}
}
}
static GstFlowReturn
gst_va_deinterlace_transform (GstBaseTransform * trans, GstBuffer * inbuf,
GstBuffer * outbuf)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstVaBaseTransform *btrans = GST_VA_BASE_TRANSFORM (trans);
GstFlowReturn res = GST_FLOW_OK;
GstVaSample src, dst;
GstVideoInfo *info = &btrans->in_info;
VASurfaceID forward_references[8], backward_references[8];
guint i, surface_flags;
if (G_UNLIKELY (!btrans->negotiated))
goto unknown_format;
g_assert (self->curr_field == FIRST_FIELD
|| self->curr_field == SECOND_FIELD);
surface_flags = gst_va_buffer_get_surface_flags (inbuf, info);
if (surface_flags != VA_FRAME_PICTURE)
_set_field (self, &surface_flags);
GST_TRACE_OBJECT (self, "Processing %d field (flags = %u): %" GST_PTR_FORMAT,
self->curr_field, surface_flags, inbuf);
for (i = 0; i < self->hcurr; i++) {
forward_references[i] =
gst_va_buffer_get_surface (self->history[self->hcurr - i - 1]);
}
for (i = 0; i < self->num_backward_references; i++) {
backward_references[i] =
gst_va_buffer_get_surface (self->history[self->hcurr + i + 1]);
}
/* *INDENT-OFF* */
src = (GstVaSample) {
.buffer = inbuf,
.flags = surface_flags,
.forward_references = forward_references,
.num_forward_references = self->hcurr,
.backward_references = backward_references,
.num_backward_references = self->num_backward_references,
};
dst = (GstVaSample) {
.buffer = outbuf,
};
/* *INDENT-ON* */
if (!gst_va_filter_process (btrans->filter, &src, &dst)) {
gst_buffer_set_flags (outbuf, GST_BUFFER_FLAG_CORRUPTED);
}
return res;
/* ERRORS */
unknown_format:
{
GST_ELEMENT_ERROR (self, CORE, NOT_IMPLEMENTED, (NULL), ("unknown format"));
return GST_FLOW_NOT_NEGOTIATED;
}
}
static GstFlowReturn
gst_va_deinterlace_generate_output (GstBaseTransform * trans,
GstBuffer ** outbuf)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstFlowReturn ret;
GstBuffer *inbuf, *buf = NULL;
if (gst_base_transform_is_passthrough (trans)) {
return GST_BASE_TRANSFORM_CLASS (parent_class)->generate_output (trans,
outbuf);
}
*outbuf = NULL;
if (self->curr_field == FINISHED)
return GST_FLOW_OK;
inbuf = self->history[self->hcurr];
if (!inbuf)
return GST_FLOW_OK;
if (!self->history[self->hdepth - 1])
return GST_FLOW_OK;
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->prepare_output_buffer (trans,
inbuf, &buf);
if (ret != GST_FLOW_OK || !buf) {
GST_WARNING_OBJECT (self, "Could not get buffer from pool: %s",
gst_flow_get_name (ret));
return ret;
}
ret = gst_va_deinterlace_transform (trans, inbuf, buf);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buf);
return ret;
}
if (!GST_BUFFER_PTS_IS_VALID (inbuf)) {
GST_LOG_OBJECT (self, "Input buffer timestamp is unknown");
} else {
GstClockTime duration;
if (GST_BUFFER_DURATION_IS_VALID (inbuf))
duration = GST_BUFFER_DURATION (inbuf) / 2;
else
duration = self->default_duration / 2;
GST_BUFFER_DURATION (buf) = duration;
if (self->curr_field == SECOND_FIELD)
GST_BUFFER_PTS (buf) = GST_BUFFER_PTS (buf) + duration;
}
*outbuf = buf;
GST_TRACE_OBJECT (self, "Pushing %" GST_PTR_FORMAT, buf);
if (self->curr_field == FIRST_FIELD)
self->curr_field = SECOND_FIELD;
else if (self->curr_field == SECOND_FIELD)
self->curr_field = FINISHED;
return ret;
}
static GstCaps *
gst_va_deinterlace_remove_interlace (GstCaps * caps)
{
GstStructure *st;
gint i, n;
GstCaps *res;
GstCapsFeatures *f;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
gst_structure_remove_fields (st, "interlace-mode", "field-order",
"framerate", NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
static GstCaps *
gst_va_deinterlace_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstVaBaseTransform *btrans = GST_VA_BASE_TRANSFORM (trans);
GstCaps *ret, *filter_caps;
GST_DEBUG_OBJECT (self,
"Transforming caps %" GST_PTR_FORMAT " in direction %s", caps,
(direction == GST_PAD_SINK) ? "sink" : "src");
filter_caps = gst_va_base_transform_get_filter_caps (btrans);
if (filter_caps && !gst_caps_can_intersect (caps, filter_caps)) {
ret = gst_caps_ref (caps);
goto bail;
}
ret = gst_va_deinterlace_remove_interlace (caps);
bail:
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (ret);
ret = intersection;
}
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static GstCaps *
gst_va_deinterlace_fixate_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * othercaps)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
GstCapsFeatures *out_f;
GstStructure *in_s, *out_s;
gint fps_n, fps_d;
const gchar *in_interlace_mode, *out_interlace_mode;
GST_DEBUG_OBJECT (self,
"trying to fixate othercaps %" GST_PTR_FORMAT " based on caps %"
GST_PTR_FORMAT, othercaps, caps);
othercaps = gst_caps_truncate (othercaps);
othercaps = gst_caps_make_writable (othercaps);
if (direction == GST_PAD_SRC) {
othercaps = gst_caps_fixate (othercaps);
goto bail;
}
in_s = gst_caps_get_structure (caps, 0);
in_interlace_mode = gst_structure_get_string (in_s, "interlace-mode");
out_s = gst_caps_get_structure (othercaps, 0);
if (g_strcmp0 ("progressive", in_interlace_mode) == 0) {
/* Just forward interlace-mode=progressive and framerate
* By this way, basetransform will enable passthrough for non-interlaced
* stream */
const GValue *framerate = gst_structure_get_value (in_s, "framerate");
gst_structure_set_value (out_s, "framerate", framerate);
gst_structure_set (out_s, "interlace-mode", G_TYPE_STRING, "progressive",
NULL);
goto bail;
}
out_f = gst_caps_get_features (othercaps, 0);
out_interlace_mode = gst_structure_get_string (out_s, "interlace-mode");
if ((!out_interlace_mode
|| (g_strcmp0 ("progressive", out_interlace_mode) == 0))
&& (gst_caps_features_contains (out_f, GST_CAPS_FEATURE_MEMORY_VA)
|| gst_caps_features_contains (out_f, GST_CAPS_FEATURE_MEMORY_DMABUF)
|| gst_caps_features_contains (out_f,
GST_CAPS_FEATURE_MEMORY_SYSTEM_MEMORY))) {
gst_structure_set (out_s, "interlace-mode", G_TYPE_STRING, "progressive",
NULL);
if (gst_structure_get_fraction (in_s, "framerate", &fps_n, &fps_d)) {
fps_n *= 2;
gst_structure_set (out_s, "framerate", GST_TYPE_FRACTION, fps_n, fps_d,
NULL);
}
} else {
/* if caps features aren't supported, just forward interlace-mode
* and framerate */
const GValue *framerate = gst_structure_get_value (in_s, "framerate");
gst_structure_set_value (out_s, "framerate", framerate);
gst_structure_set (out_s, "interlace-mode", G_TYPE_STRING,
in_interlace_mode, NULL);
}
bail:
GST_DEBUG_OBJECT (self, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
return othercaps;
}
static gboolean
gst_va_deinterlace_query (GstBaseTransform * trans, GstPadDirection direction,
GstQuery * query)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (trans);
if (direction == GST_PAD_SRC && GST_QUERY_TYPE (query) == GST_QUERY_LATENCY
&& !gst_base_transform_is_passthrough (trans)) {
GstPad *peer;
GstClockTime latency, min, max;
gboolean res = FALSE;
gboolean live;
peer = gst_pad_get_peer (GST_BASE_TRANSFORM_SINK_PAD (trans));
if (!peer)
return FALSE;
res = gst_pad_query (peer, query);
gst_object_unref (peer);
if (!res)
return FALSE;
gst_query_parse_latency (query, &live, &min, &max);
GST_DEBUG_OBJECT (self, "Peer latency: min %" GST_TIME_FORMAT " max %"
GST_TIME_FORMAT, GST_TIME_ARGS (min), GST_TIME_ARGS (max));
/* add our own latency: number of fields + history depth */
latency = (2 + self->hdepth) * self->default_duration;
GST_DEBUG_OBJECT (self, "Our latency: min %" GST_TIME_FORMAT ", max %"
GST_TIME_FORMAT, GST_TIME_ARGS (latency), GST_TIME_ARGS (latency));
min += latency;
if (max != GST_CLOCK_TIME_NONE)
max += latency;
GST_DEBUG_OBJECT (self, "Calculated total latency : min %" GST_TIME_FORMAT
" max %" GST_TIME_FORMAT, GST_TIME_ARGS (min), GST_TIME_ARGS (max));
gst_query_set_latency (query, live, min, max);
return TRUE;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->query (trans, direction,
query);
}
static void
gst_va_deinterlace_class_init (gpointer g_class, gpointer class_data)
{
GstCaps *doc_caps, *sink_caps = NULL, *src_caps = NULL;
GstPadTemplate *sink_pad_templ, *src_pad_templ;
GObjectClass *object_class = G_OBJECT_CLASS (g_class);
GstBaseTransformClass *trans_class = GST_BASE_TRANSFORM_CLASS (g_class);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstVaBaseTransformClass *btrans_class = GST_VA_BASE_TRANSFORM_CLASS (g_class);
GstVaDisplay *display;
GstVaFilter *filter;
struct CData *cdata = class_data;
gchar *long_name;
parent_class = g_type_class_peek_parent (g_class);
btrans_class->render_device_path = g_strdup (cdata->render_device_path);
if (cdata->description) {
long_name = g_strdup_printf ("VA-API Deinterlacer in %s",
cdata->description);
} else {
long_name = g_strdup ("VA-API Deinterlacer");
}
gst_element_class_set_metadata (element_class, long_name,
"Filter/Effect/Video/Deinterlace",
"VA-API based deinterlacer", "Víctor Jáquez <vjaquez@igalia.com>");
display = gst_va_display_drm_new_from_path (btrans_class->render_device_path);
filter = gst_va_filter_new (display);
if (gst_va_filter_open (filter)) {
src_caps = gst_va_filter_get_caps (filter);
/* adds any to enable passthrough */
{
GstCaps *any_caps = gst_caps_new_empty_simple ("video/x-raw");
gst_caps_set_features_simple (any_caps, gst_caps_features_new_any ());
src_caps = gst_caps_merge (src_caps, any_caps);
}
} else {
src_caps = gst_caps_from_string (caps_str);
}
sink_caps = gst_va_deinterlace_remove_interlace (src_caps);
doc_caps = gst_caps_from_string (caps_str);
sink_pad_templ = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
sink_caps);
gst_element_class_add_pad_template (element_class, sink_pad_templ);
gst_pad_template_set_documentation_caps (sink_pad_templ,
gst_caps_ref (doc_caps));
src_pad_templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
src_caps);
gst_element_class_add_pad_template (element_class, src_pad_templ);
gst_pad_template_set_documentation_caps (src_pad_templ,
gst_caps_ref (doc_caps));
gst_caps_unref (doc_caps);
gst_caps_unref (src_caps);
gst_caps_unref (sink_caps);
object_class->dispose = gst_va_deinterlace_dispose;
object_class->set_property = gst_va_deinterlace_set_property;
object_class->get_property = gst_va_deinterlace_get_property;
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_va_deinterlace_transform_caps);
trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_va_deinterlace_fixate_caps);
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_va_deinterlace_before_transform);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_va_deinterlace_transform);
trans_class->submit_input_buffer =
GST_DEBUG_FUNCPTR (gst_va_deinterlace_submit_input_buffer);
trans_class->generate_output =
GST_DEBUG_FUNCPTR (gst_va_deinterlace_generate_output);
trans_class->query = GST_DEBUG_FUNCPTR (gst_va_deinterlace_query);
trans_class->transform_ip_on_passthrough = FALSE;
btrans_class->set_info = GST_DEBUG_FUNCPTR (gst_va_deinterlace_set_info);
gst_va_filter_install_deinterlace_properties (filter, object_class);
g_free (long_name);
g_free (cdata->description);
g_free (cdata->render_device_path);
g_free (cdata);
gst_object_unref (filter);
gst_object_unref (display);
}
static void
gst_va_deinterlace_init (GTypeInstance * instance, gpointer g_class)
{
GstVaDeinterlace *self = GST_VA_DEINTERLACE (instance);
GParamSpec *pspec;
pspec = g_object_class_find_property (g_class, "method");
g_assert (pspec);
self->method = g_value_get_enum (g_param_spec_get_default_value (pspec));
}
static gpointer
_register_debug_category (gpointer data)
{
GST_DEBUG_CATEGORY_INIT (gst_va_deinterlace_debug, "vadeinterlace", 0,
"VA Video Deinterlace");
return NULL;
}
gboolean
gst_va_deinterlace_register (GstPlugin * plugin, GstVaDevice * device,
guint rank)
{
static GOnce debug_once = G_ONCE_INIT;
GType type;
GTypeInfo type_info = {
.class_size = sizeof (GstVaDeinterlaceClass),
.class_init = gst_va_deinterlace_class_init,
.instance_size = sizeof (GstVaDeinterlace),
.instance_init = gst_va_deinterlace_init,
};
struct CData *cdata;
gboolean ret;
gchar *type_name, *feature_name;
g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
cdata = g_new (struct CData, 1);
cdata->description = NULL;
cdata->render_device_path = g_strdup (device->render_device_path);
type_info.class_data = cdata;
type_name = g_strdup ("GstVaDeinterlace");
feature_name = g_strdup ("vadeinterlace");
/* The first postprocessor to be registered should use a constant
* name, like vadeinterlace, for any additional postprocessors, we
* create unique names, using inserting the render device name. */
if (g_type_from_name (type_name)) {
gchar *basename = g_path_get_basename (device->render_device_path);
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstVa%sDeinterlace", basename);
feature_name = g_strdup_printf ("va%sdeinterlace", basename);
cdata->description = basename;
/* lower rank for non-first device */
if (rank > 0)
rank--;
}
g_once (&debug_once, _register_debug_category, NULL);
type = g_type_register_static (GST_TYPE_VA_BASE_TRANSFORM, type_name,
&type_info, 0);
ret = gst_element_register (plugin, feature_name, rank, type);
g_free (type_name);
g_free (feature_name);
return ret;
}