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invtelecine: Add invtelecine element
Automatic inverse telecine element. Right now, it clumsily attempts to rearrange video fields into frames that don't have combing effects, and only works with 60i/24p content at 720x480. Later, it will handle other pulldown variations, change caps and smooth timestamps appropriately.
This commit is contained in:
David Schleef
parent
6da643e072
commit
e98fc783c8
3 changed files with 580 additions and 0 deletions
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@ -269,6 +269,7 @@ AG_GST_CHECK_PLUGIN(frei0r)
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AG_GST_CHECK_PLUGIN(h264parse)
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AG_GST_CHECK_PLUGIN(hdvparse)
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AG_GST_CHECK_PLUGIN(id3tag)
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AG_GST_CHECK_PLUGIN(invtelecine)
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AG_GST_CHECK_PLUGIN(jpegformat)
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AG_GST_CHECK_PLUGIN(librfb)
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AG_GST_CHECK_PLUGIN(liveadder)
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@ -1637,6 +1638,7 @@ gst/frei0r/Makefile
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gst/h264parse/Makefile
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gst/hdvparse/Makefile
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gst/id3tag/Makefile
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gst/invtelecine/Makefile
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gst/jpegformat/Makefile
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gst/legacyresample/Makefile
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gst/librfb/Makefile
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16
gst/invtelecine/Makefile.am
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16
gst/invtelecine/Makefile.am
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@ -0,0 +1,16 @@
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plugin_LTLIBRARIES = libgstinvtelecine.la
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libgstinvtelecine_la_SOURCES = \
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gstinvtelecine.c
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libgstinvtelecine_la_CFLAGS = \
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$(GST_CFLAGS) \
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$(GST_PLUGINS_BASE_CFLAGS)
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libgstinvtelecine_la_LIBADD = \
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$(GST_LIBS) \
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$(GST_PLUGINS_BASE_LIBS)
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libgstinvtelecine_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstinvtelecine_la_LIBTOOLFLAGS = --tag=disable-static
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562
gst/invtelecine/gstinvtelecine.c
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562
gst/invtelecine/gstinvtelecine.c
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@ -0,0 +1,562 @@
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/* GStreamer
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* Copyright (C) 2010 David A. Schleef <ds@schleef.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <string.h>
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GST_DEBUG_CATEGORY (gst_invtelecine_debug);
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#define GST_CAT_DEFAULT gst_invtelecine_debug
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#define GST_TYPE_INVTELECINE \
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(gst_invtelecine_get_type())
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#define GST_INVTELECINE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_INVTELECINE,GstInvtelecine))
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#define GST_INVTELECINE_DEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_INVTELECINE,GstInvtelecineClass))
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#define GST_IS_GST_INVTELECINE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_INVTELECINE))
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#define GST_IS_GST_INVTELECINE_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_INVTELECINE))
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typedef struct _GstInvtelecine GstInvtelecine;
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typedef struct _GstInvtelecineClass GstInvtelecineClass;
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typedef struct _Field Field;
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#define FIFO_SIZE 20
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struct _Field
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{
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GstBuffer *buffer;
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int field_index;
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double prev;
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};
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struct _GstInvtelecine
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{
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GstElement element;
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GstPad *srcpad;
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GstPad *sinkpad;
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int next_field;
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int num_fields;
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int field;
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gboolean locked;
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int phase;
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Field fifo[FIFO_SIZE];
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};
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struct _GstInvtelecineClass
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{
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GstElementClass element_class;
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};
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enum
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{
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ARG_0
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};
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static GstStaticPadTemplate gst_invtelecine_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")
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)
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);
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static GstStaticPadTemplate gst_invtelecine_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")
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)
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);
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static void gst_invtelecine_base_init (gpointer g_class);
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static void gst_invtelecine_class_init (GstInvtelecineClass * klass);
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static void gst_invtelecine_init (GstInvtelecine * invtelecine);
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static GstFlowReturn gst_invtelecine_chain (GstPad * pad, GstBuffer * buffer);
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static void gst_invtelecine_set_property (GObject * object,
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guint prop_id, const GValue * value, GParamSpec * pspec);
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static void gst_invtelecine_get_property (GObject * object,
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guint prop_id, GValue * value, GParamSpec * pspec);
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static GstStateChangeReturn gst_invtelecine_change_state (GstElement * element,
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GstStateChange transition);
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static GstElementClass *parent_class = NULL;
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static GstFlowReturn
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gst_invtelecine_output_fields (GstInvtelecine * invtelecine, int num_fields);
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GType
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gst_invtelecine_get_type (void)
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{
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static GType invtelecine_type = 0;
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if (!invtelecine_type) {
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static const GTypeInfo invtelecine_info = {
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sizeof (GstInvtelecineClass),
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gst_invtelecine_base_init,
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NULL,
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(GClassInitFunc) gst_invtelecine_class_init,
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NULL,
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NULL,
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sizeof (GstInvtelecine),
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0,
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(GInstanceInitFunc) gst_invtelecine_init,
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};
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invtelecine_type = g_type_register_static (GST_TYPE_ELEMENT,
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"GstInvtelecine", &invtelecine_info, 0);
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}
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return invtelecine_type;
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}
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static void
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gst_invtelecine_base_init (gpointer g_class)
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{
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static const GstElementDetails invtelecine_details =
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GST_ELEMENT_DETAILS ("H.264 Decoder",
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"Codec/Decoder/Video",
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"Decode H.264/MPEG-4 AVC video streams",
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"Entropy Wave <ds@entropywave.com>");
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_set_details (element_class, &invtelecine_details);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_invtelecine_sink_template));
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_invtelecine_src_template));
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}
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static void
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gst_invtelecine_class_init (GstInvtelecineClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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parent_class = g_type_class_peek_parent (klass);
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object_class->set_property = gst_invtelecine_set_property;
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object_class->get_property = gst_invtelecine_get_property;
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element_class->change_state = gst_invtelecine_change_state;
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}
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static void
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gst_invtelecine_init (GstInvtelecine * invtelecine)
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{
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GST_DEBUG ("gst_invtelecine_init");
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invtelecine->sinkpad =
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gst_pad_new_from_static_template (&gst_invtelecine_sink_template, "sink");
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gst_element_add_pad (GST_ELEMENT (invtelecine), invtelecine->sinkpad);
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gst_pad_set_chain_function (invtelecine->sinkpad, gst_invtelecine_chain);
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invtelecine->srcpad =
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gst_pad_new_from_static_template (&gst_invtelecine_src_template, "src");
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gst_element_add_pad (GST_ELEMENT (invtelecine), invtelecine->srcpad);
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}
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#define MAX_FIELD_SCORE 100
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static double
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gst_invtelecine_compare_fields (GstInvtelecine * invtelecine, int field1,
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int field2)
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{
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int i;
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int j;
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guint8 *data1;
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guint8 *data2_1;
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guint8 *data2_2;
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int field_index;
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int have;
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int vave;
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int hdiff;
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int vdiff;
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double sum;
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double linesum;
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double den;
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if (field1 < 0 || field2 < 0)
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return MAX_FIELD_SCORE;
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if (invtelecine->fifo[field1].buffer == NULL ||
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invtelecine->fifo[field2].buffer == NULL)
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return MAX_FIELD_SCORE;
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if (invtelecine->fifo[field1].buffer == invtelecine->fifo[field2].buffer &&
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invtelecine->fifo[field1].field_index ==
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invtelecine->fifo[field2].field_index) {
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return 0;
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}
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sum = 0;
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field_index = invtelecine->fifo[field1].field_index;
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for (j = field_index; j < 480; j += 2) {
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if (j == 0 || j == 479)
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continue;
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data1 = GST_BUFFER_DATA (invtelecine->fifo[field1].buffer) + 720 * j;
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data2_1 =
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GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) + 720 * (j - 1);
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data2_2 =
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GST_BUFFER_DATA (invtelecine->fifo[field2].buffer) + 720 * (j + 1);
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linesum = 0;
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for (i = 1; i < 719; i++) {
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have = data1[i - 1] + data1[i + 1];
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hdiff = abs (data1[i - 1] - data1[i + 1]);
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vave = data2_1[i] + data2_2[i];
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vdiff = abs (data2_1[i] - data2_2[i]);
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den = MAX (1, MAX (hdiff, vdiff));
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linesum += (have - vave) * (have - vave) / (den * den);
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}
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sum += linesum;
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}
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sum /= 720 * 240;
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return MIN (sum, MAX_FIELD_SCORE);
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}
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static void
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gst_invtelecine_push_field (GstInvtelecine * invtelecine, GstBuffer * buffer,
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int field_index)
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{
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int i;
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g_assert (invtelecine->num_fields < FIFO_SIZE - 1);
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i = invtelecine->num_fields;
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invtelecine->num_fields++;
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GST_DEBUG ("ref %p", buffer);
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invtelecine->fifo[i].buffer = gst_buffer_ref (buffer);
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invtelecine->fifo[i].field_index = field_index;
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invtelecine->fifo[i].prev =
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gst_invtelecine_compare_fields (invtelecine, i, i - 1);
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//g_print("compare %f\n", invtelecine->fifo[i].prev);
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}
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int pulldown_2_3[] = { 2, 3 };
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static int
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get_score (GstInvtelecine * invtelecine, int phase)
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{
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int i;
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int score = 0;
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int field_index = 0;
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GST_DEBUG ("scoring for phase %d", phase);
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for (i = 0; i < 15; i++) {
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if (field_index == 0) {
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if (invtelecine->fifo[i].prev > 50) {
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/* Strong picture change signal */
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score++;
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} else if (i < 14 &&
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pulldown_2_3[phase] >= 2 &&
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(invtelecine->fifo[i].prev < invtelecine->fifo[i + 1].prev * 0.5)) {
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score--;
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} else if (i < 13 &&
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pulldown_2_3[phase] >= 3 &&
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(invtelecine->fifo[i].prev < invtelecine->fifo[i + 2].prev * 0.5)) {
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score--;
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} else {
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}
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} else {
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if (invtelecine->fifo[i].prev > 50) {
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/* A secondary field with visible combing */
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return -10;
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} else if (invtelecine->fifo[i].prev > 5) {
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score--;
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} else if (invtelecine->fifo[i].prev < 3) {
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/* In the noise */
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score++;
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} else {
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}
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}
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GST_DEBUG ("i=%d phase=%d fi=%d prev=%g score=%d", i, phase, field_index,
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invtelecine->fifo[i].prev, score);
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field_index++;
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if (field_index == pulldown_2_3[phase]) {
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field_index = 0;
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phase++;
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if (phase == 2)
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phase = 0;
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}
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}
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return score;
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}
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static void
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gst_invtelecine_process (GstInvtelecine * invtelecine, gboolean flush)
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{
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int score;
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int num_fields;
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GST_DEBUG ("process %d", invtelecine->num_fields);
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while (invtelecine->num_fields > 15) {
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if (invtelecine->locked) {
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score = get_score (invtelecine, invtelecine->phase);
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if (score < 4) {
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GST_WARNING ("unlocked field=%d (phase = %d, score = %d)",
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invtelecine->field, invtelecine->phase, score);
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invtelecine->locked = FALSE;
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}
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}
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if (!invtelecine->locked) {
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int p;
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int a[2];
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for (p = 0; p < 2; p++) {
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a[p] = get_score (invtelecine, p);
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}
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if (a[0] >= 8 && a[1] < 4) {
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GST_WARNING ("locked field=%d (phase = %d, score = %d)",
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invtelecine->field, 0, a[0]);
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invtelecine->locked = TRUE;
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invtelecine->phase = 0;
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} else if (a[1] >= 8 && a[0] < 4) {
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GST_WARNING ("locked field=%d (phase = %d, score = %d)",
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invtelecine->field, 1, a[1]);
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invtelecine->locked = TRUE;
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invtelecine->phase = 1;
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}
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}
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//g_print ("score %d %d\n", a[0], a[1]);
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if (invtelecine->locked) {
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num_fields = pulldown_2_3[invtelecine->phase];
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g_print ("frame %d %g %g %g\n",
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invtelecine->field,
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invtelecine->fifo[0].prev,
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invtelecine->fifo[1].prev,
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(num_fields == 3) ? invtelecine->fifo[2].prev : 0);
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} else {
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num_fields = 2;
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}
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gst_invtelecine_output_fields (invtelecine, num_fields);
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while (num_fields > 0) {
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GST_DEBUG ("unref %p", invtelecine->fifo[0].buffer);
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gst_buffer_unref (invtelecine->fifo[0].buffer);
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invtelecine->num_fields--;
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memmove (invtelecine->fifo, invtelecine->fifo + 1,
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invtelecine->num_fields * sizeof (Field));
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num_fields--;
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invtelecine->field++;
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}
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invtelecine->phase++;
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if (invtelecine->phase == 2) {
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invtelecine->phase = 0;
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}
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}
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}
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static void
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copy_field (GstBuffer * d, GstBuffer * s, int field_index)
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{
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int j;
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guint8 *dest;
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guint8 *src;
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for (j = field_index; j < 480; j += 2) {
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dest = GST_BUFFER_DATA (d) + j * 720;
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src = GST_BUFFER_DATA (s) + j * 720;
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memcpy (dest, src, 720);
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}
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for (j = field_index; j < 240; j += 2) {
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dest = GST_BUFFER_DATA (d) + 720 * 480 + j * 360;
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src = GST_BUFFER_DATA (s) + 720 * 480 + j * 360;
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memcpy (dest, src, 360);
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}
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for (j = field_index; j < 240; j += 2) {
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dest = GST_BUFFER_DATA (d) + 720 * 480 + 360 * 240 + j * 360;
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src = GST_BUFFER_DATA (s) + 720 * 480 + 360 * 240 + j * 360;
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memcpy (dest, src, 360);
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}
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}
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static GstFlowReturn
|
||||
gst_invtelecine_output_fields (GstInvtelecine * invtelecine, int num_fields)
|
||||
{
|
||||
GstBuffer *buffer;
|
||||
int field_index;
|
||||
|
||||
field_index = invtelecine->fifo[0].field_index;
|
||||
|
||||
buffer = gst_buffer_new_and_alloc (720 * 480 + 360 * 240 + 360 * 240);
|
||||
|
||||
copy_field (buffer, invtelecine->fifo[0].buffer, field_index);
|
||||
copy_field (buffer, invtelecine->fifo[1].buffer, field_index ^ 1);
|
||||
|
||||
gst_buffer_set_caps (buffer, GST_BUFFER_CAPS (invtelecine->fifo[0].buffer));
|
||||
|
||||
GST_BUFFER_TIMESTAMP (buffer) =
|
||||
GST_BUFFER_TIMESTAMP (invtelecine->fifo[0].buffer);
|
||||
GST_BUFFER_DURATION (buffer) =
|
||||
gst_util_uint64_scale (GST_SECOND, num_fields * 1001, 60000);
|
||||
if (num_fields == 3) {
|
||||
GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_RFF);
|
||||
}
|
||||
if (num_fields == 1) {
|
||||
GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_ONEFIELD);
|
||||
}
|
||||
if (field_index == 0) {
|
||||
GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_TFF);
|
||||
}
|
||||
|
||||
return gst_pad_push (invtelecine->srcpad, buffer);
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_invtelecine_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstInvtelecine *invtelecine = GST_INVTELECINE (gst_pad_get_parent (pad));
|
||||
int field_index;
|
||||
|
||||
GST_DEBUG ("Received buffer at %u:%02u:%02u:%09u",
|
||||
(guint) (GST_BUFFER_TIMESTAMP (buffer) / (GST_SECOND * 60 * 60)),
|
||||
(guint) ((GST_BUFFER_TIMESTAMP (buffer) / (GST_SECOND * 60)) % 60),
|
||||
(guint) ((GST_BUFFER_TIMESTAMP (buffer) / GST_SECOND) % 60),
|
||||
(guint) (GST_BUFFER_TIMESTAMP (buffer) % GST_SECOND));
|
||||
|
||||
field_index = (GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_TFF) ? 0 : 1;
|
||||
|
||||
GST_DEBUG ("duration %lld flags %04x %s %s %s",
|
||||
GST_BUFFER_DURATION (buffer),
|
||||
GST_BUFFER_FLAGS (buffer),
|
||||
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_TFF) ? "tff" : "",
|
||||
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_RFF) ? "rff" : "",
|
||||
(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_ONEFIELD) ? "onefield" :
|
||||
"");
|
||||
|
||||
if (GST_BUFFER_FLAGS (buffer) & GST_BUFFER_FLAG_DISCONT) {
|
||||
GST_DEBUG ("discont");
|
||||
|
||||
invtelecine->next_field = field_index;
|
||||
}
|
||||
|
||||
if (invtelecine->next_field != field_index) {
|
||||
GST_DEBUG ("wrong field first, expecting %d got %d",
|
||||
invtelecine->next_field, field_index);
|
||||
invtelecine->next_field = field_index;
|
||||
}
|
||||
|
||||
gst_invtelecine_push_field (invtelecine, buffer, invtelecine->next_field);
|
||||
invtelecine->next_field ^= 1;
|
||||
|
||||
if (!(GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_ONEFIELD)) {
|
||||
gst_invtelecine_push_field (invtelecine, buffer, invtelecine->next_field);
|
||||
invtelecine->next_field ^= 1;
|
||||
|
||||
if ((GST_BUFFER_FLAGS (buffer) & GST_VIDEO_BUFFER_RFF)) {
|
||||
gst_invtelecine_push_field (invtelecine, buffer, invtelecine->next_field);
|
||||
invtelecine->next_field ^= 1;
|
||||
}
|
||||
}
|
||||
|
||||
gst_invtelecine_process (invtelecine, FALSE);
|
||||
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
gst_object_unref (invtelecine);
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
static void
|
||||
gst_invtelecine_set_property (GObject * object,
|
||||
guint prop_id, const GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
//GstInvtelecine *invtelecine = GST_INVTELECINE (object);
|
||||
|
||||
switch (prop_id) {
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_invtelecine_get_property (GObject * object,
|
||||
guint prop_id, GValue * value, GParamSpec * pspec)
|
||||
{
|
||||
//GstInvtelecine *invtelecine = GST_INVTELECINE (object);
|
||||
|
||||
switch (prop_id) {
|
||||
default:
|
||||
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
static GstStateChangeReturn
|
||||
gst_invtelecine_change_state (GstElement * element, GstStateChange transition)
|
||||
{
|
||||
//GstInvtelecine *invtelecine = GST_INVTELECINE (element);
|
||||
|
||||
switch (transition) {
|
||||
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
||||
//gst_invtelecine_reset (invtelecine);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
if (parent_class->change_state)
|
||||
return parent_class->change_state (element, transition);
|
||||
|
||||
return GST_STATE_CHANGE_SUCCESS;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
GST_DEBUG_CATEGORY_INIT (gst_invtelecine_debug, "invtelecine", 0,
|
||||
"Inverse telecine element");
|
||||
|
||||
return gst_element_register (plugin, "invtelecine", GST_RANK_NONE,
|
||||
GST_TYPE_INVTELECINE);
|
||||
}
|
||||
|
||||
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
"invtelecine",
|
||||
"Inverse Telecine",
|
||||
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|
||||
Loading…
Reference in a new issue