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gstreamer/gst/deinterlace/gstdeinterlace.c
Stefan Kost e7a5ff40bd docs: trim sections file more 
Rename some defines and move some itesm to *.c files. Add more items to internal
subsection.
2010-04-08 12:14:07 +03:00

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/*
* GStreamer
* Copyright (C) 2005 Martin Eikermann <meiker@upb.de>
* Copyright (C) 2008-2009 Sebastian Dröge <slomo@collabora.co.uk>
*
* 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 the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-deinterlace
*
* deinterlace deinterlaces interlaced video frames to progressive video frames.
* For this different algorithms can be selected which will be described later.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch -v filesrc location=/path/to/file ! decodebin2 ! ffmpegcolorspace ! deinterlace ! ffmpegcolorspace ! autovideosink
* ]| This pipeline deinterlaces a video file with the default deinterlacing options.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdeinterlace.h"
#include "tvtime/plugins.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (deinterlace_debug);
#define GST_CAT_DEFAULT (deinterlace_debug)
/* Object signals and args */
enum
{
LAST_SIGNAL
};
/* Properties */
#define DEFAULT_MODE GST_DEINTERLACE_MODE_INTERLACED
#define DEFAULT_METHOD GST_DEINTERLACE_GREEDY_H
#define DEFAULT_FIELDS GST_DEINTERLACE_ALL
#define DEFAULT_FIELD_LAYOUT GST_DEINTERLACE_LAYOUT_AUTO
enum
{
PROP_0,
PROP_MODE,
PROP_METHOD,
PROP_FIELDS,
PROP_FIELD_LAYOUT,
PROP_LAST
};
G_DEFINE_TYPE (GstDeinterlaceMethod, gst_deinterlace_method, GST_TYPE_OBJECT);
static void
gst_deinterlace_method_class_init (GstDeinterlaceMethodClass * klass)
{
}
static void
gst_deinterlace_method_init (GstDeinterlaceMethod * self)
{
}
static void
gst_deinterlace_method_deinterlace_frame (GstDeinterlaceMethod * self,
GstDeinterlace * parent, GstBuffer * outbuf)
{
GstDeinterlaceMethodClass *klass = GST_DEINTERLACE_METHOD_GET_CLASS (self);
klass->deinterlace_frame (self, parent, outbuf);
}
static gint
gst_deinterlace_method_get_fields_required (GstDeinterlaceMethod * self)
{
GstDeinterlaceMethodClass *klass = GST_DEINTERLACE_METHOD_GET_CLASS (self);
return klass->fields_required;
}
static gint
gst_deinterlace_method_get_latency (GstDeinterlaceMethod * self)
{
GstDeinterlaceMethodClass *klass = GST_DEINTERLACE_METHOD_GET_CLASS (self);
return klass->latency;
}
G_DEFINE_TYPE (GstDeinterlaceSimpleMethod, gst_deinterlace_simple_method,
GST_TYPE_DEINTERLACE_METHOD);
static void
gst_deinterlace_simple_method_interpolate_scanline (GstDeinterlaceMethod * self,
GstDeinterlace * parent, guint8 * out,
GstDeinterlaceScanlineData * scanlines, gint width)
{
oil_memcpy (out, scanlines->m1, parent->row_stride);
}
static void
gst_deinterlace_simple_method_copy_scanline (GstDeinterlaceMethod * self,
GstDeinterlace * parent, guint8 * out,
GstDeinterlaceScanlineData * scanlines, gint width)
{
oil_memcpy (out, scanlines->m0, parent->row_stride);
}
static void
gst_deinterlace_simple_method_deinterlace_frame (GstDeinterlaceMethod * self,
GstDeinterlace * parent, GstBuffer * outbuf)
{
GstDeinterlaceSimpleMethodClass *dsm_class =
GST_DEINTERLACE_SIMPLE_METHOD_GET_CLASS (self);
GstDeinterlaceMethodClass *dm_class = GST_DEINTERLACE_METHOD_GET_CLASS (self);
GstDeinterlaceScanlineData scanlines;
guint8 *out = GST_BUFFER_DATA (outbuf);
guint8 *field0 = NULL, *field1 = NULL, *field2 = NULL, *field3 = NULL;
gint cur_field_idx = parent->history_count - dm_class->fields_required;
guint cur_field_flags = parent->field_history[cur_field_idx].flags;
gint line;
field0 = GST_BUFFER_DATA (parent->field_history[cur_field_idx].buf);
g_return_if_fail (dm_class->fields_required <= 4);
if (dm_class->fields_required >= 2)
field1 = GST_BUFFER_DATA (parent->field_history[cur_field_idx + 1].buf);
if (dm_class->fields_required >= 3)
field2 = GST_BUFFER_DATA (parent->field_history[cur_field_idx + 2].buf);
if (dm_class->fields_required >= 4)
field3 = GST_BUFFER_DATA (parent->field_history[cur_field_idx + 3].buf);
if (cur_field_flags == PICTURE_INTERLACED_BOTTOM) {
/* double the first scanline of the bottom field */
oil_memcpy (out, field0, parent->row_stride);
out += parent->row_stride;
}
oil_memcpy (out, field0, parent->row_stride);
out += parent->row_stride;
for (line = 2; line <= parent->field_height; line++) {
memset (&scanlines, 0, sizeof (scanlines));
scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
/* interp. scanline */
scanlines.t0 = field0;
scanlines.b0 = field0 + parent->field_stride;
if (field1 != NULL) {
scanlines.tt1 = field1;
scanlines.m1 = field1 + parent->field_stride;
scanlines.bb1 = field1 + parent->field_stride * 2;
field1 += parent->field_stride;
}
if (field2 != NULL) {
scanlines.t2 = field2;
scanlines.b2 = field2 + parent->field_stride;
}
if (field3 != NULL) {
scanlines.tt3 = field3;
scanlines.m3 = field3 + parent->field_stride;
scanlines.bb3 = field3 + parent->field_stride * 2;
field3 += parent->field_stride;
}
/* set valid data for corner cases */
if (line == 2) {
scanlines.tt1 = scanlines.bb1;
scanlines.tt3 = scanlines.bb3;
} else if (line == parent->field_height) {
scanlines.bb1 = scanlines.tt1;
scanlines.bb3 = scanlines.tt3;
}
dsm_class->interpolate_scanline (self, parent, out, &scanlines,
parent->frame_width);
out += parent->row_stride;
memset (&scanlines, 0, sizeof (scanlines));
scanlines.bottom_field = (cur_field_flags == PICTURE_INTERLACED_BOTTOM);
/* copy a scanline */
scanlines.tt0 = field0;
scanlines.m0 = field0 + parent->field_stride;
scanlines.bb0 = field0 + parent->field_stride * 2;
field0 += parent->field_stride;
if (field1 != NULL) {
scanlines.t1 = field1;
scanlines.b1 = field1 + parent->field_stride;
}
if (field2 != NULL) {
scanlines.tt2 = field2;
scanlines.m2 = field2 + parent->field_stride;
scanlines.bb2 = field2 + parent->field_stride * 2;
field2 += parent->field_stride;
}
if (field3 != NULL) {
scanlines.t3 = field3;
scanlines.b3 = field3 + parent->field_stride;
}
/* set valid data for corner cases */
if (line == parent->field_height) {
scanlines.bb0 = scanlines.tt0;
scanlines.b1 = scanlines.t1;
scanlines.bb2 = scanlines.tt2;
scanlines.b3 = scanlines.t3;
}
dsm_class->copy_scanline (self, parent, out, &scanlines,
parent->frame_width);
out += parent->row_stride;
}
if (cur_field_flags == PICTURE_INTERLACED_TOP) {
/* double the last scanline of the top field */
oil_memcpy (out, field0, parent->row_stride);
}
}
static void
gst_deinterlace_simple_method_class_init (GstDeinterlaceSimpleMethodClass *
klass)
{
GstDeinterlaceMethodClass *dm_class = (GstDeinterlaceMethodClass *) klass;
dm_class->deinterlace_frame = gst_deinterlace_simple_method_deinterlace_frame;
dm_class->fields_required = 2;
klass->interpolate_scanline =
gst_deinterlace_simple_method_interpolate_scanline;
klass->copy_scanline = gst_deinterlace_simple_method_copy_scanline;
}
static void
gst_deinterlace_simple_method_init (GstDeinterlaceSimpleMethod * self)
{
}
#define GST_TYPE_DEINTERLACE_METHODS (gst_deinterlace_methods_get_type ())
static GType
gst_deinterlace_methods_get_type (void)
{
static GType deinterlace_methods_type = 0;
static const GEnumValue methods_types[] = {
{GST_DEINTERLACE_TOMSMOCOMP, "Motion Adaptive: Motion Search",
"tomsmocomp"},
{GST_DEINTERLACE_GREEDY_H, "Motion Adaptive: Advanced Detection",
"greedyh"},
{GST_DEINTERLACE_GREEDY_L, "Motion Adaptive: Simple Detection", "greedyl"},
{GST_DEINTERLACE_VFIR, "Blur Vertical", "vfir"},
{GST_DEINTERLACE_LINEAR, "Television: Full resolution", "linear"},
{GST_DEINTERLACE_LINEAR_BLEND, "Blur: Temporal", "linearblend"},
{GST_DEINTERLACE_SCALER_BOB, "Double lines", "scalerbob"},
{GST_DEINTERLACE_WEAVE, "Weave", "weave"},
{GST_DEINTERLACE_WEAVE_TFF, "Progressive: Top Field First", "weavetff"},
{GST_DEINTERLACE_WEAVE_BFF, "Progressive: Bottom Field First", "weavebff"},
{0, NULL, NULL},
};
if (!deinterlace_methods_type) {
deinterlace_methods_type =
g_enum_register_static ("GstDeinterlaceMethods", methods_types);
}
return deinterlace_methods_type;
}
#define GST_TYPE_DEINTERLACE_FIELDS (gst_deinterlace_fields_get_type ())
static GType
gst_deinterlace_fields_get_type (void)
{
static GType deinterlace_fields_type = 0;
static const GEnumValue fields_types[] = {
{GST_DEINTERLACE_ALL, "All fields", "all"},
{GST_DEINTERLACE_TF, "Top fields only", "top"},
{GST_DEINTERLACE_BF, "Bottom fields only", "bottom"},
{0, NULL, NULL},
};
if (!deinterlace_fields_type) {
deinterlace_fields_type =
g_enum_register_static ("GstDeinterlaceFields", fields_types);
}
return deinterlace_fields_type;
}
#define GST_TYPE_DEINTERLACE_FIELD_LAYOUT (gst_deinterlace_field_layout_get_type ())
static GType
gst_deinterlace_field_layout_get_type (void)
{
static GType deinterlace_field_layout_type = 0;
static const GEnumValue field_layout_types[] = {
{GST_DEINTERLACE_LAYOUT_AUTO, "Auto detection", "auto"},
{GST_DEINTERLACE_LAYOUT_TFF, "Top field first", "tff"},
{GST_DEINTERLACE_LAYOUT_BFF, "Bottom field first", "bff"},
{0, NULL, NULL},
};
if (!deinterlace_field_layout_type) {
deinterlace_field_layout_type =
g_enum_register_static ("GstDeinterlaceFieldLayout",
field_layout_types);
}
return deinterlace_field_layout_type;
}
#define GST_TYPE_DEINTERLACE_MODES (gst_deinterlace_modes_get_type ())
static GType
gst_deinterlace_modes_get_type (void)
{
static GType deinterlace_modes_type = 0;
static const GEnumValue modes_types[] = {
{GST_DEINTERLACE_MODE_AUTO, "Auto detection", "auto"},
{GST_DEINTERLACE_MODE_INTERLACED, "Force deinterlacing", "interlaced"},
{GST_DEINTERLACE_MODE_DISABLED, "Run in passthrough mode", "disabled"},
{0, NULL, NULL},
};
if (!deinterlace_modes_type) {
deinterlace_modes_type =
g_enum_register_static ("GstDeinterlaceModes", modes_types);
}
return deinterlace_modes_type;
}
static GstStaticPadTemplate src_templ = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YUY2") ";"
GST_VIDEO_CAPS_YUV ("YVYU"))
);
static GstStaticPadTemplate sink_templ = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YUY2") ";"
GST_VIDEO_CAPS_YUV ("YVYU"))
);
static void gst_deinterlace_finalize (GObject * self);
static void gst_deinterlace_set_property (GObject * self, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_deinterlace_get_property (GObject * self, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *gst_deinterlace_getcaps (GstPad * pad);
static gboolean gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_deinterlace_sink_event (GstPad * pad, GstEvent * event);
static gboolean gst_deinterlace_sink_query (GstPad * pad, GstQuery * query);
static GstFlowReturn gst_deinterlace_chain (GstPad * pad, GstBuffer * buffer);
static GstFlowReturn gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset,
guint size, GstCaps * caps, GstBuffer ** buf);
static GstStateChangeReturn gst_deinterlace_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_deinterlace_src_event (GstPad * pad, GstEvent * event);
static gboolean gst_deinterlace_src_query (GstPad * pad, GstQuery * query);
static const GstQueryType *gst_deinterlace_src_query_types (GstPad * pad);
static void gst_deinterlace_reset (GstDeinterlace * self);
static void gst_deinterlace_update_qos (GstDeinterlace * self,
gdouble proportion, GstClockTimeDiff diff, GstClockTime time);
static void gst_deinterlace_reset_qos (GstDeinterlace * self);
static void gst_deinterlace_read_qos (GstDeinterlace * self,
gdouble * proportion, GstClockTime * time);
static void gst_deinterlace_child_proxy_interface_init (gpointer g_iface,
gpointer iface_data);
static void
_do_init (GType object_type)
{
const GInterfaceInfo child_proxy_interface_info = {
(GInterfaceInitFunc) gst_deinterlace_child_proxy_interface_init,
NULL, /* interface_finalize */
NULL /* interface_data */
};
g_type_add_interface_static (object_type, GST_TYPE_CHILD_PROXY,
&child_proxy_interface_info);
}
GST_BOILERPLATE_FULL (GstDeinterlace, gst_deinterlace, GstElement,
GST_TYPE_ELEMENT, _do_init);
static void
gst_deinterlace_set_method (GstDeinterlace * self, GstDeinterlaceMethods method)
{
GST_DEBUG_OBJECT (self, "Setting new method %d", method);
if (self->method) {
gst_child_proxy_child_removed (GST_OBJECT (self),
GST_OBJECT (self->method));
gst_object_unparent (GST_OBJECT (self->method));
self->method = NULL;
}
switch (method) {
case GST_DEINTERLACE_TOMSMOCOMP:
self->method = g_object_new (GST_TYPE_DEINTERLACE_TOMSMOCOMP, NULL);
break;
case GST_DEINTERLACE_GREEDY_H:
self->method = g_object_new (GST_TYPE_DEINTERLACE_GREEDY_H, NULL);
break;
case GST_DEINTERLACE_GREEDY_L:
self->method = g_object_new (GST_TYPE_DEINTERLACE_GREEDY_L, NULL);
break;
case GST_DEINTERLACE_VFIR:
self->method = g_object_new (GST_TYPE_DEINTERLACE_VFIR, NULL);
break;
case GST_DEINTERLACE_LINEAR:
self->method = g_object_new (GST_TYPE_DEINTERLACE_LINEAR, NULL);
break;
case GST_DEINTERLACE_LINEAR_BLEND:
self->method = g_object_new (GST_TYPE_DEINTERLACE_LINEAR_BLEND, NULL);
break;
case GST_DEINTERLACE_SCALER_BOB:
self->method = g_object_new (GST_TYPE_DEINTERLACE_SCALER_BOB, NULL);
break;
case GST_DEINTERLACE_WEAVE:
self->method = g_object_new (GST_TYPE_DEINTERLACE_WEAVE, NULL);
break;
case GST_DEINTERLACE_WEAVE_TFF:
self->method = g_object_new (GST_TYPE_DEINTERLACE_WEAVE_TFF, NULL);
break;
case GST_DEINTERLACE_WEAVE_BFF:
self->method = g_object_new (GST_TYPE_DEINTERLACE_WEAVE_BFF, NULL);
break;
default:
GST_WARNING_OBJECT (self, "Invalid Deinterlacer Method");
return;
}
self->method_id = method;
gst_object_set_name (GST_OBJECT (self->method), "method");
gst_object_set_parent (GST_OBJECT (self->method), GST_OBJECT (self));
gst_child_proxy_child_added (GST_OBJECT (self), GST_OBJECT (self->method));
}
static gboolean
gst_deinterlace_clip_buffer (GstDeinterlace * self, GstBuffer * buffer)
{
gboolean ret = TRUE;
GstClockTime start, stop;
gint64 cstart, cstop;
GST_DEBUG_OBJECT (self,
"Clipping buffer to the current segment: %" GST_TIME_FORMAT " -- %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
GST_DEBUG_OBJECT (self, "Current segment: %" GST_SEGMENT_FORMAT,
&self->segment);
if (G_UNLIKELY (self->segment.format != GST_FORMAT_TIME))
goto beach;
if (G_UNLIKELY (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)))
goto beach;
start = GST_BUFFER_TIMESTAMP (buffer);
stop = start + GST_BUFFER_DURATION (buffer);
if (!(ret = gst_segment_clip (&self->segment, GST_FORMAT_TIME,
start, stop, &cstart, &cstop)))
goto beach;
GST_BUFFER_TIMESTAMP (buffer) = cstart;
if (GST_CLOCK_TIME_IS_VALID (cstop))
GST_BUFFER_DURATION (buffer) = cstop - cstart;
beach:
if (ret)
GST_DEBUG_OBJECT (self,
"Clipped buffer to the current segment: %" GST_TIME_FORMAT " -- %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
else
GST_DEBUG_OBJECT (self, "Buffer outside the current segment -- dropping");
return ret;
}
static void
gst_deinterlace_base_init (gpointer klass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_templ));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sink_templ));
gst_element_class_set_details_simple (element_class,
"Deinterlacer",
"Filter/Video",
"Deinterlace Methods ported from DScaler/TvTime",
"Martin Eikermann <meiker@upb.de>, "
"Sebastian Dröge <sebastian.droege@collabora.co.uk>");
}
static void
gst_deinterlace_class_init (GstDeinterlaceClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *element_class = (GstElementClass *) klass;
gobject_class->set_property = gst_deinterlace_set_property;
gobject_class->get_property = gst_deinterlace_get_property;
gobject_class->finalize = gst_deinterlace_finalize;
/**
* GstDeinterlace:mode
*
* This selects whether the deinterlacing methods should
* always be applied or if they should only be applied
* on content that has the "interlaced" flag on the caps.
*
*/
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode",
"Mode",
"Deinterlace Mode",
GST_TYPE_DEINTERLACE_MODES,
DEFAULT_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
/**
* GstDeinterlace:method
*
* Selects the different deinterlacing algorithms that can be used.
* These provide different quality and CPU usage.
*
* Some methods provide parameters which can be set by getting
* the "method" child via the #GstChildProxy interface and
* setting the appropiate properties on it.
*
* <itemizedlist>
* <listitem>
* <para>
* tomsmocomp
* Motion Adaptive: Motion Search
* </para>
* </listitem>
* <listitem>
* <para>
* greedyh
* Motion Adaptive: Advanced Detection
* </para>
* </listitem>
* <listitem>
* <para>
* greedyl
* Motion Adaptive: Simple Detection
* </para>
* </listitem>
* <listitem>
* <para>
* vfir
* Blur vertical
* </para>
* </listitem>
* <listitem>
* <para>
* linear
* Linear interpolation
* </para>
* </listitem>
* <listitem>
* <para>
* linearblend
* Linear interpolation in time domain
* </para>
* </listitem>
* <listitem>
* <para>
* scalerbob
* Double lines
* </para>
* </listitem>
* <listitem>
* <para>
* weave
* Weave
* </para>
* </listitem>
* <listitem>
* <para>
* weavetff
* Progressive: Top Field First
* </para>
* </listitem>
* <listitem>
* <para>
* weavebff
* Progressive: Bottom Field First
* </para>
* </listitem>
* </itemizedlist>
*/
g_object_class_install_property (gobject_class, PROP_METHOD,
g_param_spec_enum ("method",
"Method",
"Deinterlace Method",
GST_TYPE_DEINTERLACE_METHODS,
DEFAULT_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
/**
* GstDeinterlace:fields
*
* This selects which fields should be output. If "all" is selected
* the output framerate will be double.
*
*/
g_object_class_install_property (gobject_class, PROP_FIELDS,
g_param_spec_enum ("fields",
"fields",
"Fields to use for deinterlacing",
GST_TYPE_DEINTERLACE_FIELDS,
DEFAULT_FIELDS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
/**
* GstDeinterlace:layout
*
* This selects which fields is the first in time.
*
*/
g_object_class_install_property (gobject_class, PROP_FIELD_LAYOUT,
g_param_spec_enum ("tff",
"tff",
"Deinterlace top field first",
GST_TYPE_DEINTERLACE_FIELD_LAYOUT,
DEFAULT_FIELD_LAYOUT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
);
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_deinterlace_change_state);
}
static GstObject *
gst_deinterlace_child_proxy_get_child_by_index (GstChildProxy * child_proxy,
guint index)
{
GstDeinterlace *self = GST_DEINTERLACE (child_proxy);
g_return_val_if_fail (index == 0, NULL);
return gst_object_ref (self->method);
}
static guint
gst_deinterlace_child_proxy_get_children_count (GstChildProxy * child_proxy)
{
GstDeinterlace *self = GST_DEINTERLACE (child_proxy);
return ((self->method) ? 1 : 0);
}
static void
gst_deinterlace_child_proxy_interface_init (gpointer g_iface,
gpointer iface_data)
{
GstChildProxyInterface *iface = g_iface;
iface->get_child_by_index = gst_deinterlace_child_proxy_get_child_by_index;
iface->get_children_count = gst_deinterlace_child_proxy_get_children_count;
}
static void
gst_deinterlace_init (GstDeinterlace * self, GstDeinterlaceClass * klass)
{
self->sinkpad = gst_pad_new_from_static_template (&sink_templ, "sink");
gst_pad_set_chain_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_chain));
gst_pad_set_event_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_sink_event));
gst_pad_set_setcaps_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
gst_pad_set_getcaps_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
gst_pad_set_query_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_sink_query));
gst_pad_set_bufferalloc_function (self->sinkpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_alloc_buffer));
gst_element_add_pad (GST_ELEMENT (self), self->sinkpad);
self->srcpad = gst_pad_new_from_static_template (&src_templ, "src");
gst_pad_set_event_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_src_event));
gst_pad_set_query_type_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_src_query_types));
gst_pad_set_query_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_src_query));
gst_pad_set_getcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_getcaps));
gst_pad_set_setcaps_function (self->srcpad,
GST_DEBUG_FUNCPTR (gst_deinterlace_setcaps));
gst_element_add_pad (GST_ELEMENT (self), self->srcpad);
self->mode = DEFAULT_MODE;
gst_deinterlace_set_method (self, DEFAULT_METHOD);
self->fields = DEFAULT_FIELDS;
self->field_layout = DEFAULT_FIELD_LAYOUT;
self->still_frame_mode = FALSE;
gst_deinterlace_reset (self);
}
static void
gst_deinterlace_reset_history (GstDeinterlace * self)
{
gint i;
GST_DEBUG_OBJECT (self, "Resetting history");
for (i = 0; i < self->history_count; i++) {
if (self->field_history[i].buf) {
gst_buffer_unref (self->field_history[i].buf);
self->field_history[i].buf = NULL;
}
}
memset (self->field_history, 0,
GST_DEINTERLACE_MAX_FIELD_HISTORY * sizeof (GstPicture));
self->history_count = 0;
if (self->last_buffer)
gst_buffer_unref (self->last_buffer);
self->last_buffer = NULL;
}
static void
gst_deinterlace_reset (GstDeinterlace * self)
{
GST_DEBUG_OBJECT (self, "Resetting internal state");
self->row_stride = 0;
self->frame_width = 0;
self->frame_height = 0;
self->frame_rate_n = 0;
self->frame_rate_d = 0;
self->field_height = 0;
self->field_stride = 0;
gst_segment_init (&self->segment, GST_FORMAT_TIME);
if (self->sink_caps)
gst_caps_unref (self->sink_caps);
self->sink_caps = NULL;
if (self->src_caps)
gst_caps_unref (self->src_caps);
self->src_caps = NULL;
if (self->request_caps)
gst_caps_unref (self->request_caps);
self->request_caps = NULL;
gst_deinterlace_reset_history (self);
gst_deinterlace_reset_qos (self);
}
static void
gst_deinterlace_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDeinterlace *self;
g_return_if_fail (GST_IS_DEINTERLACE (object));
self = GST_DEINTERLACE (object);
switch (prop_id) {
case PROP_MODE:{
gint oldmode;
GST_OBJECT_LOCK (self);
oldmode = self->mode;
self->mode = g_value_get_enum (value);
if (self->mode != oldmode && GST_PAD_CAPS (self->srcpad))
gst_deinterlace_setcaps (self->sinkpad, GST_PAD_CAPS (self->sinkpad));
GST_OBJECT_UNLOCK (self);
break;
}
case PROP_METHOD:
gst_deinterlace_set_method (self, g_value_get_enum (value));
break;
case PROP_FIELDS:{
gint oldfields;
GST_OBJECT_LOCK (self);
oldfields = self->fields;
self->fields = g_value_get_enum (value);
if (self->fields != oldfields && GST_PAD_CAPS (self->srcpad))
gst_deinterlace_setcaps (self->sinkpad, GST_PAD_CAPS (self->sinkpad));
GST_OBJECT_UNLOCK (self);
break;
}
case PROP_FIELD_LAYOUT:
self->field_layout = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}
static void
gst_deinterlace_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstDeinterlace *self;
g_return_if_fail (GST_IS_DEINTERLACE (object));
self = GST_DEINTERLACE (object);
switch (prop_id) {
case PROP_MODE:
g_value_set_enum (value, self->mode);
break;
case PROP_METHOD:
g_value_set_enum (value, self->method_id);
break;
case PROP_FIELDS:
g_value_set_enum (value, self->fields);
break;
case PROP_FIELD_LAYOUT:
g_value_set_enum (value, self->field_layout);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
}
}
static void
gst_deinterlace_finalize (GObject * object)
{
GstDeinterlace *self = GST_DEINTERLACE (object);
gst_deinterlace_reset (self);
if (self->method) {
gst_object_unparent (GST_OBJECT (self->method));
self->method = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstBuffer *
gst_deinterlace_pop_history (GstDeinterlace * self)
{
GstBuffer *buffer;
g_return_val_if_fail (self->history_count > 0, NULL);
GST_DEBUG_OBJECT (self, "Pop last history buffer -- current history size %d",
self->history_count);
buffer = self->field_history[self->history_count - 1].buf;
self->history_count--;
GST_DEBUG_OBJECT (self, "Returning buffer: %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT " and size %u",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)), GST_BUFFER_SIZE (buffer));
return buffer;
}
static void
gst_deinterlace_push_history (GstDeinterlace * self, GstBuffer * buffer)
{
int i = 1;
GstClockTime timestamp;
GstDeinterlaceFieldLayout field_layout = self->field_layout;
gboolean repeated = GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_RFF);
gboolean tff = GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_TFF);
gboolean onefield =
GST_BUFFER_FLAG_IS_SET (buffer, GST_VIDEO_BUFFER_ONEFIELD);
GstBuffer *field1, *field2;
guint fields_to_push = (onefield) ? 1 : (!repeated) ? 2 : 3;
gint field1_flags, field2_flags;
g_return_if_fail (self->history_count <
GST_DEINTERLACE_MAX_FIELD_HISTORY - fields_to_push);
GST_DEBUG_OBJECT (self, "Pushing new buffer to the history: %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT " and size %u",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)), GST_BUFFER_SIZE (buffer));
for (i = GST_DEINTERLACE_MAX_FIELD_HISTORY - 1; i >= fields_to_push; i--) {
self->field_history[i].buf = self->field_history[i - fields_to_push].buf;
self->field_history[i].flags =
self->field_history[i - fields_to_push].flags;
}
if (field_layout == GST_DEINTERLACE_LAYOUT_AUTO) {
if (!self->interlaced) {
GST_WARNING_OBJECT (self, "Can't detect field layout -- assuming TFF");
field_layout = GST_DEINTERLACE_LAYOUT_TFF;
} else if (tff) {
field_layout = GST_DEINTERLACE_LAYOUT_TFF;
} else {
field_layout = GST_DEINTERLACE_LAYOUT_BFF;
}
}
if (field_layout == GST_DEINTERLACE_LAYOUT_TFF) {
GST_DEBUG_OBJECT (self, "Top field first");
field1 = gst_buffer_ref (buffer);
field1_flags = PICTURE_INTERLACED_TOP;
field2 = gst_buffer_create_sub (buffer, self->row_stride,
GST_BUFFER_SIZE (buffer) - self->row_stride);
field2_flags = PICTURE_INTERLACED_BOTTOM;
} else {
GST_DEBUG_OBJECT (self, "Bottom field first");
field1 = gst_buffer_create_sub (buffer, self->row_stride,
GST_BUFFER_SIZE (buffer) - self->row_stride);
field1_flags = PICTURE_INTERLACED_BOTTOM;
field2 = gst_buffer_ref (buffer);
field2_flags = PICTURE_INTERLACED_TOP;
}
/* Timestamps are assigned to the field buffers under the assumption that
the timestamp of the buffer equals the first fields timestamp */
timestamp = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_TIMESTAMP (field1) = timestamp;
GST_BUFFER_TIMESTAMP (field2) = timestamp + self->field_duration;
if (repeated)
GST_BUFFER_TIMESTAMP (field2) += self->field_duration;
if (repeated) {
self->field_history[0].buf = field2;
self->field_history[0].flags = field2_flags;
self->field_history[1].buf = gst_buffer_ref (field1);
GST_BUFFER_TIMESTAMP (self->field_history[1].buf) += self->field_duration;
self->field_history[1].flags = field1_flags;
self->field_history[2].buf = field1;
self->field_history[2].flags = field1_flags;
} else if (!onefield) {
self->field_history[0].buf = field2;
self->field_history[0].flags = field2_flags;
self->field_history[1].buf = field1;
self->field_history[1].flags = field1_flags;
} else { /* onefield */
self->field_history[0].buf = field1;
self->field_history[0].flags = field1_flags;
gst_buffer_unref (field2);
}
self->history_count += fields_to_push;
GST_DEBUG_OBJECT (self, "Pushed buffer -- current history size %d",
self->history_count);
if (self->last_buffer)
gst_buffer_unref (self->last_buffer);
self->last_buffer = buffer;
}
static void
gst_deinterlace_update_qos (GstDeinterlace * self, gdouble proportion,
GstClockTimeDiff diff, GstClockTime timestamp)
{
GST_DEBUG_OBJECT (self,
"Updating QoS: proportion %lf, diff %s%" GST_TIME_FORMAT ", timestamp %"
GST_TIME_FORMAT, proportion, (diff < 0) ? "-" : "",
GST_TIME_ARGS (ABS (diff)), GST_TIME_ARGS (timestamp));
GST_OBJECT_LOCK (self);
self->proportion = proportion;
if (G_LIKELY (timestamp != GST_CLOCK_TIME_NONE)) {
if (G_UNLIKELY (diff > 0))
self->earliest_time =
timestamp + 2 * diff + ((self->fields ==
GST_DEINTERLACE_ALL) ? self->field_duration : 2 *
self->field_duration);
else
self->earliest_time = timestamp + diff;
} else {
self->earliest_time = GST_CLOCK_TIME_NONE;
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_deinterlace_reset_qos (GstDeinterlace * self)
{
gst_deinterlace_update_qos (self, 0.5, 0, GST_CLOCK_TIME_NONE);
}
static void
gst_deinterlace_read_qos (GstDeinterlace * self, gdouble * proportion,
GstClockTime * time)
{
GST_OBJECT_LOCK (self);
*proportion = self->proportion;
*time = self->earliest_time;
GST_OBJECT_UNLOCK (self);
}
/* Perform qos calculations before processing the next frame. Returns TRUE if
* the frame should be processed, FALSE if the frame can be dropped entirely */
static gboolean
gst_deinterlace_do_qos (GstDeinterlace * self, GstClockTime timestamp)
{
GstClockTime qostime, earliest_time;
gdouble proportion;
/* no timestamp, can't do QoS => process frame */
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (timestamp))) {
GST_LOG_OBJECT (self, "invalid timestamp, can't do QoS, process frame");
return TRUE;
}
/* get latest QoS observation values */
gst_deinterlace_read_qos (self, &proportion, &earliest_time);
/* skip qos if we have no observation (yet) => process frame */
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (earliest_time))) {
GST_LOG_OBJECT (self, "no observation yet, process frame");
return TRUE;
}
/* qos is done on running time */
qostime = gst_segment_to_running_time (&self->segment, GST_FORMAT_TIME,
timestamp);
/* see how our next timestamp relates to the latest qos timestamp */
GST_LOG_OBJECT (self, "qostime %" GST_TIME_FORMAT ", earliest %"
GST_TIME_FORMAT, GST_TIME_ARGS (qostime), GST_TIME_ARGS (earliest_time));
if (qostime != GST_CLOCK_TIME_NONE && qostime <= earliest_time) {
GST_DEBUG_OBJECT (self, "we are late, drop frame");
return FALSE;
}
GST_LOG_OBJECT (self, "process frame");
return TRUE;
}
static GstFlowReturn
gst_deinterlace_chain (GstPad * pad, GstBuffer * buf)
{
GstDeinterlace *self = NULL;
GstClockTime timestamp;
GstFlowReturn ret = GST_FLOW_OK;
gint fields_required = 0;
gint cur_field_idx = 0;
GstBuffer *outbuf;
self = GST_DEINTERLACE (GST_PAD_PARENT (pad));
if (self->still_frame_mode ||
self->mode == GST_DEINTERLACE_MODE_DISABLED || (!self->interlaced
&& self->mode != GST_DEINTERLACE_MODE_INTERLACED))
return gst_pad_push (self->srcpad, buf);
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
GST_DEBUG_OBJECT (self, "DISCONT buffer, resetting history");
gst_deinterlace_reset_history (self);
}
gst_deinterlace_push_history (self, buf);
buf = NULL;
fields_required = gst_deinterlace_method_get_fields_required (self->method);
/* Not enough fields in the history */
if (self->history_count < fields_required + 1) {
GST_DEBUG_OBJECT (self, "Need more fields (have %d, need %d)",
self->history_count, fields_required + 1);
return GST_FLOW_OK;
}
while (self->history_count >= fields_required) {
if (self->fields == GST_DEINTERLACE_ALL)
GST_DEBUG_OBJECT (self, "All fields");
else if (self->fields == GST_DEINTERLACE_TF)
GST_DEBUG_OBJECT (self, "Top fields");
else if (self->fields == GST_DEINTERLACE_BF)
GST_DEBUG_OBJECT (self, "Bottom fields");
cur_field_idx = self->history_count - fields_required;
if ((self->field_history[cur_field_idx].flags == PICTURE_INTERLACED_TOP
&& self->fields == GST_DEINTERLACE_TF) ||
self->fields == GST_DEINTERLACE_ALL) {
GST_DEBUG_OBJECT (self, "deinterlacing top field");
/* create new buffer */
ret = gst_pad_alloc_buffer (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
self->request_caps);
gst_buffer_unref (outbuf);
outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
if (!outbuf)
return GST_FLOW_ERROR;
gst_buffer_set_caps (outbuf, self->src_caps);
}
g_return_val_if_fail (self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method) >= 0,
GST_FLOW_ERROR);
buf =
self->field_history[self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method)].buf;
timestamp = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
if (self->fields == GST_DEINTERLACE_ALL)
GST_BUFFER_DURATION (outbuf) = self->field_duration;
else
GST_BUFFER_DURATION (outbuf) = 2 * self->field_duration;
/* Check if we need to drop the frame because of QoS */
if (!gst_deinterlace_do_qos (self, GST_BUFFER_TIMESTAMP (buf))) {
gst_buffer_unref (gst_deinterlace_pop_history (self));
gst_buffer_unref (outbuf);
outbuf = NULL;
ret = GST_FLOW_OK;
} else {
/* do magic calculus */
gst_deinterlace_method_deinterlace_frame (self->method, self, outbuf);
gst_buffer_unref (gst_deinterlace_pop_history (self));
if (gst_deinterlace_clip_buffer (self, outbuf)) {
ret = gst_pad_push (self->srcpad, outbuf);
} else {
ret = GST_FLOW_OK;
gst_buffer_unref (outbuf);
}
outbuf = NULL;
if (ret != GST_FLOW_OK)
return ret;
}
}
/* no calculation done: remove excess field */
else if (self->field_history[cur_field_idx].flags ==
PICTURE_INTERLACED_TOP && self->fields == GST_DEINTERLACE_BF) {
GST_DEBUG_OBJECT (self, "Removing unused top field");
gst_buffer_unref (gst_deinterlace_pop_history (self));
}
cur_field_idx = self->history_count - fields_required;
if (self->history_count < fields_required)
break;
/* deinterlace bottom_field */
if ((self->field_history[cur_field_idx].flags == PICTURE_INTERLACED_BOTTOM
&& self->fields == GST_DEINTERLACE_BF) ||
self->fields == GST_DEINTERLACE_ALL) {
GST_DEBUG_OBJECT (self, "deinterlacing bottom field");
/* create new buffer */
ret = gst_pad_alloc_buffer (self->srcpad,
GST_BUFFER_OFFSET_NONE, self->frame_size, self->src_caps, &outbuf);
if (ret != GST_FLOW_OK)
return ret;
if (self->src_caps != GST_BUFFER_CAPS (outbuf) &&
!gst_caps_is_equal (self->src_caps, GST_BUFFER_CAPS (outbuf))) {
gst_caps_replace (&self->request_caps, GST_BUFFER_CAPS (outbuf));
GST_DEBUG_OBJECT (self, "Upstream wants new caps %" GST_PTR_FORMAT,
self->request_caps);
gst_buffer_unref (outbuf);
outbuf = gst_buffer_try_new_and_alloc (self->frame_size);
if (!outbuf)
return GST_FLOW_ERROR;
gst_buffer_set_caps (outbuf, self->src_caps);
}
g_return_val_if_fail (self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method) >= 0,
GST_FLOW_ERROR);
buf =
self->field_history[self->history_count - 1 -
gst_deinterlace_method_get_latency (self->method)].buf;
timestamp = GST_BUFFER_TIMESTAMP (buf);
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
if (self->fields == GST_DEINTERLACE_ALL)
GST_BUFFER_DURATION (outbuf) = self->field_duration;
else
GST_BUFFER_DURATION (outbuf) = 2 * self->field_duration;
/* Check if we need to drop the frame because of QoS */
if (!gst_deinterlace_do_qos (self, GST_BUFFER_TIMESTAMP (buf))) {
gst_buffer_unref (gst_deinterlace_pop_history (self));
gst_buffer_unref (outbuf);
outbuf = NULL;
ret = GST_FLOW_OK;
} else {
/* do magic calculus */
gst_deinterlace_method_deinterlace_frame (self->method, self, outbuf);
gst_buffer_unref (gst_deinterlace_pop_history (self));
if (gst_deinterlace_clip_buffer (self, outbuf)) {
ret = gst_pad_push (self->srcpad, outbuf);
} else {
ret = GST_FLOW_OK;
gst_buffer_unref (outbuf);
}
outbuf = NULL;
if (ret != GST_FLOW_OK)
return ret;
}
}
/* no calculation done: remove excess field */
else if (self->field_history[cur_field_idx].flags ==
PICTURE_INTERLACED_BOTTOM && self->fields == GST_DEINTERLACE_TF) {
GST_DEBUG_OBJECT (self, "Removing unused bottom field");
gst_buffer_unref (gst_deinterlace_pop_history (self));
}
}
return ret;
}
static gint
gst_greatest_common_divisor (gint a, gint b)
{
while (b != 0) {
int temp = a;
a = b;
b = temp % b;
}
return ABS (a);
}
static gboolean
gst_fraction_double (gint * n_out, gint * d_out, gboolean half)
{
gint n, d, gcd;
n = *n_out;
d = *d_out;
if (d == 0)
return FALSE;
if (n == 0 || (n == G_MAXINT && d == 1))
return TRUE;
gcd = gst_greatest_common_divisor (n, d);
n /= gcd;
d /= gcd;
if (!half) {
if (G_MAXINT / 2 >= ABS (n)) {
n *= 2;
} else if (d >= 2) {
d /= 2;
} else {
return FALSE;
}
} else {
if (G_MAXINT / 2 >= ABS (d)) {
d *= 2;
} else if (n >= 2) {
n /= 2;
} else {
return FALSE;
}
}
*n_out = n;
*d_out = d;
return TRUE;
}
static GstCaps *
gst_deinterlace_getcaps (GstPad * pad)
{
GstCaps *ret;
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
GstPad *otherpad;
gint len;
const GstCaps *ourcaps;
GstCaps *peercaps;
GST_OBJECT_LOCK (self);
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
ourcaps = gst_pad_get_pad_template_caps (pad);
peercaps = gst_pad_peer_get_caps (otherpad);
if (peercaps) {
GST_DEBUG_OBJECT (pad, "Peer has caps %" GST_PTR_FORMAT, peercaps);
ret = gst_caps_intersect (ourcaps, peercaps);
gst_caps_unref (peercaps);
} else {
ret = gst_caps_copy (ourcaps);
}
GST_OBJECT_UNLOCK (self);
if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED) &&
self->fields == GST_DEINTERLACE_ALL
&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
for (len = gst_caps_get_size (ret); len > 0; len--) {
GstStructure *s = gst_caps_get_structure (ret, len - 1);
const GValue *val;
val = gst_structure_get_value (s, "framerate");
if (!val)
continue;
if (G_VALUE_TYPE (val) == GST_TYPE_FRACTION) {
gint n, d;
n = gst_value_get_fraction_numerator (val);
d = gst_value_get_fraction_denominator (val);
if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
goto error;
}
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, n, d, NULL);
} else if (G_VALUE_TYPE (val) == GST_TYPE_FRACTION_RANGE) {
const GValue *min, *max;
GValue nrange = { 0, }, nmin = {
0,}, nmax = {
0,};
gint n, d;
g_value_init (&nrange, GST_TYPE_FRACTION_RANGE);
g_value_init (&nmin, GST_TYPE_FRACTION);
g_value_init (&nmax, GST_TYPE_FRACTION);
min = gst_value_get_fraction_range_min (val);
max = gst_value_get_fraction_range_max (val);
n = gst_value_get_fraction_numerator (min);
d = gst_value_get_fraction_denominator (min);
if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
g_value_unset (&nrange);
g_value_unset (&nmax);
g_value_unset (&nmin);
goto error;
}
gst_value_set_fraction (&nmin, n, d);
n = gst_value_get_fraction_numerator (max);
d = gst_value_get_fraction_denominator (max);
if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
g_value_unset (&nrange);
g_value_unset (&nmax);
g_value_unset (&nmin);
goto error;
}
gst_value_set_fraction (&nmax, n, d);
gst_value_set_fraction_range (&nrange, &nmin, &nmax);
gst_structure_set_value (s, "framerate", &nrange);
g_value_unset (&nmin);
g_value_unset (&nmax);
g_value_unset (&nrange);
} else if (G_VALUE_TYPE (val) == GST_TYPE_LIST) {
const GValue *lval;
GValue nlist = { 0, };
GValue nval = { 0, };
gint i;
g_value_init (&nlist, GST_TYPE_LIST);
for (i = gst_value_list_get_size (val); i > 0; i--) {
gint n, d;
lval = gst_value_list_get_value (val, i);
if (G_VALUE_TYPE (lval) != GST_TYPE_FRACTION)
continue;
n = gst_value_get_fraction_numerator (lval);
d = gst_value_get_fraction_denominator (lval);
/* Double/Half the framerate but if this fails simply
* skip this value from the list */
if (!gst_fraction_double (&n, &d, pad != self->srcpad)) {
continue;
}
g_value_init (&nval, GST_TYPE_FRACTION);
gst_value_set_fraction (&nval, n, d);
gst_value_list_append_value (&nlist, &nval);
g_value_unset (&nval);
}
gst_structure_set_value (s, "framerate", &nlist);
g_value_unset (&nlist);
}
}
}
GST_DEBUG_OBJECT (pad, "Returning caps %" GST_PTR_FORMAT, ret);
return ret;
error:
GST_ERROR_OBJECT (pad, "Unable to transform peer caps");
gst_caps_unref (ret);
return NULL;
}
static gboolean
gst_deinterlace_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean res = TRUE;
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
GstPad *otherpad;
GstStructure *structure;
GstVideoFormat fmt;
guint32 fourcc;
GstCaps *othercaps;
otherpad = (pad == self->srcpad) ? self->sinkpad : self->srcpad;
structure = gst_caps_get_structure (caps, 0);
res = gst_structure_get_int (structure, "width", &self->frame_width);
res &= gst_structure_get_int (structure, "height", &self->frame_height);
res &=
gst_structure_get_fraction (structure, "framerate", &self->frame_rate_n,
&self->frame_rate_d);
res &= gst_structure_get_fourcc (structure, "format", &fourcc);
res &= gst_video_format_parse_caps_interlaced (caps, &self->interlaced);
if (!res)
goto invalid_caps;
if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED) &&
self->fields == GST_DEINTERLACE_ALL
&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
gint fps_n = self->frame_rate_n, fps_d = self->frame_rate_d;
if (!gst_fraction_double (&fps_n, &fps_d, otherpad != self->srcpad))
goto invalid_caps;
othercaps = gst_caps_copy (caps);
gst_caps_set_simple (othercaps, "framerate", GST_TYPE_FRACTION, fps_n,
fps_d, NULL);
} else {
othercaps = gst_caps_ref (caps);
}
if (otherpad == self->srcpad && self->mode != GST_DEINTERLACE_MODE_DISABLED) {
GstStructure *s;
othercaps = gst_caps_make_writable (othercaps);
s = gst_caps_get_structure (othercaps, 0);
gst_structure_remove_field (s, "interlaced");
}
if (!gst_pad_set_caps (otherpad, othercaps))
goto caps_not_accepted;
self->field_height = self->frame_height / 2;
fmt = gst_video_format_from_fourcc (fourcc);
/* TODO: only true if fields are subbuffers of interlaced frames,
change when the buffer-fields concept has landed */
self->field_stride =
gst_video_format_get_row_stride (fmt, 0, self->frame_width) * 2;
/* in bytes */
self->row_stride =
gst_video_format_get_row_stride (fmt, 0, self->frame_width);
self->frame_size =
gst_video_format_get_size (fmt, self->frame_width, self->frame_height);
if (self->fields == GST_DEINTERLACE_ALL && otherpad == self->srcpad)
self->field_duration =
gst_util_uint64_scale (GST_SECOND, self->frame_rate_d,
self->frame_rate_n);
else
self->field_duration =
gst_util_uint64_scale (GST_SECOND, self->frame_rate_d,
2 * self->frame_rate_n);
if (pad == self->sinkpad) {
gst_caps_replace (&self->sink_caps, caps);
gst_caps_replace (&self->src_caps, othercaps);
} else {
gst_caps_replace (&self->src_caps, caps);
gst_caps_replace (&self->sink_caps, othercaps);
}
GST_DEBUG_OBJECT (pad, "Set caps: %" GST_PTR_FORMAT, caps);
GST_DEBUG_OBJECT (pad, "Other caps: %" GST_PTR_FORMAT, othercaps);
gst_caps_unref (othercaps);
done:
gst_object_unref (self);
return res;
invalid_caps:
res = FALSE;
GST_ERROR_OBJECT (pad, "Invalid caps: %" GST_PTR_FORMAT, caps);
goto done;
caps_not_accepted:
res = FALSE;
GST_ERROR_OBJECT (pad, "Caps not accepted: %" GST_PTR_FORMAT, othercaps);
gst_caps_unref (othercaps);
goto done;
}
static gboolean
gst_deinterlace_sink_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
GST_LOG_OBJECT (pad, "received %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NEWSEGMENT:
{
GstFormat fmt;
gboolean is_update;
gint64 start, end, base;
gdouble rate;
gst_event_parse_new_segment (event, &is_update, &rate, &fmt, &start,
&end, &base);
if (fmt == GST_FORMAT_TIME) {
GST_DEBUG_OBJECT (pad,
"Got NEWSEGMENT event in GST_FORMAT_TIME, passing on (%"
GST_TIME_FORMAT " - %" GST_TIME_FORMAT ")", GST_TIME_ARGS (start),
GST_TIME_ARGS (end));
gst_segment_set_newsegment (&self->segment, is_update, rate, fmt, start,
end, base);
} else {
gst_segment_init (&self->segment, GST_FORMAT_TIME);
}
gst_deinterlace_reset_qos (self);
gst_deinterlace_reset_history (self);
res = gst_pad_push_event (self->srcpad, event);
break;
}
case GST_EVENT_CUSTOM_DOWNSTREAM:{
gboolean still_state;
if (gst_video_event_parse_still_frame (event, &still_state)) {
GST_DEBUG_OBJECT (self, "Received still frame event, state %d",
still_state);
if (still_state) {
GstFlowReturn ret;
GST_DEBUG_OBJECT (self, "Handling still frame");
self->still_frame_mode = TRUE;
if (self->last_buffer) {
ret =
gst_pad_push (self->srcpad, gst_buffer_ref (self->last_buffer));
GST_DEBUG_OBJECT (self, "Pushed still frame, result: %s",
gst_flow_get_name (ret));
} else {
GST_WARNING_OBJECT (self, "No pending buffer!");
}
} else {
GST_DEBUG_OBJECT (self, "Ending still frames");
self->still_frame_mode = FALSE;
}
}
}
/* fall through */
case GST_EVENT_EOS:
gst_deinterlace_reset_history (self);
/* fall through */
default:
res = gst_pad_push_event (self->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
if (self->still_frame_mode) {
GST_DEBUG_OBJECT (self, "Ending still frames");
self->still_frame_mode = FALSE;
}
gst_deinterlace_reset_qos (self);
res = gst_pad_push_event (self->srcpad, event);
gst_deinterlace_reset_history (self);
break;
}
gst_object_unref (self);
return res;
}
static gboolean
gst_deinterlace_sink_query (GstPad * pad, GstQuery * query)
{
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
gboolean res = FALSE;
GST_LOG_OBJECT (pad, "%s query", GST_QUERY_TYPE_NAME (query));
switch (GST_QUERY_TYPE (query)) {
default:{
GstPad *peer = gst_pad_get_peer (self->srcpad);
if (peer) {
res = gst_pad_query (peer, query);
gst_object_unref (peer);
} else {
res = FALSE;
}
break;
}
}
gst_object_unref (self);
return res;
}
static GstStateChangeReturn
gst_deinterlace_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret;
GstDeinterlace *self = GST_DEINTERLACE (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret != GST_STATE_CHANGE_SUCCESS)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
gst_deinterlace_reset (self);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
default:
break;
}
return ret;
}
static gboolean
gst_deinterlace_src_event (GstPad * pad, GstEvent * event)
{
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
gboolean res;
GST_DEBUG_OBJECT (pad, "received %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:{
GstClockTimeDiff diff;
GstClockTime timestamp;
gdouble proportion;
gst_event_parse_qos (event, &proportion, &diff, &timestamp);
gst_deinterlace_update_qos (self, proportion, diff, timestamp);
}
/* fall through */
default:
res = gst_pad_push_event (self->sinkpad, event);
break;
}
gst_object_unref (self);
return res;
}
static gboolean
gst_deinterlace_src_query (GstPad * pad, GstQuery * query)
{
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
gboolean res = FALSE;
GST_LOG_OBJECT (pad, "%s query", GST_QUERY_TYPE_NAME (query));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED)
&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
GstClockTime min, max;
gboolean live;
GstPad *peer;
if ((peer = gst_pad_get_peer (self->sinkpad))) {
if ((res = gst_pad_query (peer, query))) {
GstClockTime latency;
gint fields_required = 0;
gint method_latency = 0;
if (self->method) {
fields_required =
gst_deinterlace_method_get_fields_required (self->method);
method_latency =
gst_deinterlace_method_get_latency (self->method);
}
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 */
latency = (fields_required + method_latency) * self->field_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);
}
gst_object_unref (peer);
} else {
res = FALSE;
}
break;
}
default:{
GstPad *peer = gst_pad_get_peer (self->sinkpad);
if (peer) {
res = gst_pad_query (peer, query);
gst_object_unref (peer);
} else {
res = FALSE;
}
break;
}
}
gst_object_unref (self);
return res;
}
static const GstQueryType *
gst_deinterlace_src_query_types (GstPad * pad)
{
static const GstQueryType types[] = {
GST_QUERY_LATENCY,
GST_QUERY_NONE
};
return types;
}
static GstFlowReturn
gst_deinterlace_alloc_buffer (GstPad * pad, guint64 offset, guint size,
GstCaps * caps, GstBuffer ** buf)
{
GstDeinterlace *self = GST_DEINTERLACE (gst_pad_get_parent (pad));
GstFlowReturn ret = GST_FLOW_OK;
*buf = NULL;
GST_DEBUG_OBJECT (pad, "alloc with caps %" GST_PTR_FORMAT ", size %u", caps,
size);
if (self->still_frame_mode ||
self->mode == GST_DEINTERLACE_MODE_DISABLED || (!self->interlaced
&& self->mode != GST_DEINTERLACE_MODE_INTERLACED)) {
ret = gst_pad_alloc_buffer (self->srcpad, offset, size, caps, buf);
} else if (G_LIKELY (!self->request_caps)) {
*buf = gst_buffer_try_new_and_alloc (size);
if (G_UNLIKELY (!*buf)) {
ret = GST_FLOW_ERROR;
} else {
gst_buffer_set_caps (*buf, caps);
GST_BUFFER_OFFSET (*buf) = offset;
}
} else {
gint width, height;
GstVideoFormat fmt;
guint new_frame_size;
GstCaps *new_caps = gst_caps_copy (self->request_caps);
if ((self->interlaced || self->mode == GST_DEINTERLACE_MODE_INTERLACED) &&
self->fields == GST_DEINTERLACE_ALL
&& self->mode != GST_DEINTERLACE_MODE_DISABLED) {
gint n, d;
GstStructure *s = gst_caps_get_structure (new_caps, 0);
gst_structure_get_fraction (s, "framerate", &n, &d);
if (!gst_fraction_double (&n, &d, TRUE)) {
gst_object_unref (self);
gst_caps_unref (new_caps);
return GST_FLOW_OK;
}
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, n, d, NULL);
}
if (G_UNLIKELY (!gst_video_format_parse_caps (new_caps, &fmt, &width,
&height))) {
gst_object_unref (self);
gst_caps_unref (new_caps);
return GST_FLOW_OK;
}
new_frame_size = gst_video_format_get_size (fmt, width, height);
*buf = gst_buffer_try_new_and_alloc (new_frame_size);
if (G_UNLIKELY (!*buf)) {
ret = GST_FLOW_ERROR;
} else {
gst_buffer_set_caps (*buf, new_caps);
gst_caps_unref (self->request_caps);
self->request_caps = NULL;
gst_caps_unref (new_caps);
}
}
gst_object_unref (self);
return ret;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (deinterlace_debug, "deinterlace", 0, "Deinterlacer");
oil_init ();
if (!gst_element_register (plugin, "deinterlace", GST_RANK_NONE,
GST_TYPE_DEINTERLACE)) {
return FALSE;
}
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"deinterlace",
"Deinterlacer", plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN);
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