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interlace: new element

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This commit is contained in:
David Schleef 2010-08-22 21:43:20 -07:00
parent 135908dfe1
commit 7ce0ca6c89
3 changed files with 476 additions and 0 deletions
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2
configure.ac
View file

@ -284,6 +284,7 @@ AG_GST_CHECK_PLUGIN(geometrictransform)
AG_GST_CHECK_PLUGIN(h264parse)
AG_GST_CHECK_PLUGIN(hdvparse)
AG_GST_CHECK_PLUGIN(id3tag)
AG_GST_CHECK_PLUGIN(interlace)
AG_GST_CHECK_PLUGIN(invtelecine)
AG_GST_CHECK_PLUGIN(ivfparse)
AG_GST_CHECK_PLUGIN(jpegformat)
@ -1698,6 +1699,7 @@ gst/geometrictransform/Makefile
gst/h264parse/Makefile
gst/hdvparse/Makefile
gst/id3tag/Makefile
gst/interlace/Makefile
gst/invtelecine/Makefile
gst/ivfparse/Makefile
gst/jpegformat/Makefile

17
gst/interlace/Makefile.am Normal file
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@ -0,0 +1,17 @@
plugin_LTLIBRARIES = libgstinterlace.la
libgstinterlace_la_SOURCES = \
gstinterlace.c
libgstinterlace_la_CFLAGS = \
$(GST_CFLAGS) \
$(GST_PLUGINS_BASE_CFLAGS)
libgstinterlace_la_LIBADD = \
$(GST_LIBS) \
$(GST_PLUGINS_BASE_LIBS) -lgstvideo-@GST_MAJORMINOR@ \
$(LIBM)
libgstinterlace_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstinterlace_la_LIBTOOLFLAGS = --tag=disable-static

457
gst/interlace/gstinterlace.c Normal file
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@ -0,0 +1,457 @@
/* GStreamer
* Copyright (C) 2010 David A. Schleef <ds@schleef.org>
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
GST_DEBUG_CATEGORY (gst_interlace_debug);
#define GST_CAT_DEFAULT gst_interlace_debug
#define GST_TYPE_INTERLACE \
(gst_interlace_get_type())
#define GST_INTERLACE(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_INTERLACE,GstInterlace))
#define GST_INTERLACE_DEC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_INTERLACE,GstInterlaceClass))
#define GST_IS_GST_INTERLACE(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_INTERLACE))
#define GST_IS_GST_INTERLACE_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_INTERLACE))
typedef struct _GstInterlace GstInterlace;
typedef struct _GstInterlaceClass GstInterlaceClass;
struct _GstInterlace
{
GstElement element;
GstPad *srcpad;
GstPad *sinkpad;
GstCaps *srccaps;
/* properties */
gboolean top_field_first;
/* state */
int width;
int height;
GstVideoFormat format;
GstBuffer *stored_frame;
};
struct _GstInterlaceClass
{
GstElementClass element_class;
};
enum
{
ARG_0,
PROP_TOP_FIELD_FIRST
};
static GstStaticPadTemplate gst_interlace_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{YUY2,UYVY,I420,YV12}")
",interlaced=TRUE")
);
static GstStaticPadTemplate gst_interlace_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{YUY2,UYVY,I420,YV12}")
",interlaced=FALSE")
);
static void gst_interlace_base_init (gpointer g_class);
static void gst_interlace_class_init (GstInterlaceClass * klass);
static void gst_interlace_init (GstInterlace * interlace);
static GstFlowReturn gst_interlace_chain (GstPad * pad, GstBuffer * buffer);
static void gst_interlace_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_interlace_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_interlace_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_interlace_getcaps (GstPad * pad);
static GstStateChangeReturn gst_interlace_change_state (GstElement * element,
GstStateChange transition);
static GstElementClass *parent_class = NULL;
static GType
gst_interlace_get_type (void)
{
static GType interlace_type = 0;
if (!interlace_type) {
static const GTypeInfo interlace_info = {
sizeof (GstInterlaceClass),
gst_interlace_base_init,
NULL,
(GClassInitFunc) gst_interlace_class_init,
NULL,
NULL,
sizeof (GstInterlace),
0,
(GInstanceInitFunc) gst_interlace_init,
};
interlace_type = g_type_register_static (GST_TYPE_ELEMENT,
"GstInterlace", &interlace_info, 0);
}
return interlace_type;
}
static void
gst_interlace_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class,
"Inverse Telecine filter", "Filter/Video",
"Detects and reconstructs progressive content from telecine video",
"Entropy Wave <ds@entropywave.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_interlace_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_interlace_src_template));
}
static void
gst_interlace_class_init (GstInterlaceClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->set_property = gst_interlace_set_property;
object_class->get_property = gst_interlace_get_property;
element_class->change_state = gst_interlace_change_state;
g_object_class_install_property (object_class, PROP_TOP_FIELD_FIRST,
g_param_spec_boolean ("top-field-first", "top field first",
"Interlaced stream should be top field first", FALSE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_interlace_init (GstInterlace * interlace)
{
GST_DEBUG ("gst_interlace_init");
interlace->sinkpad =
gst_pad_new_from_static_template (&gst_interlace_sink_template, "sink");
gst_element_add_pad (GST_ELEMENT (interlace), interlace->sinkpad);
gst_pad_set_chain_function (interlace->sinkpad, gst_interlace_chain);
gst_pad_set_setcaps_function (interlace->sinkpad, gst_interlace_setcaps);
gst_pad_set_getcaps_function (interlace->sinkpad, gst_interlace_getcaps);
interlace->srcpad =
gst_pad_new_from_static_template (&gst_interlace_src_template, "src");
gst_element_add_pad (GST_ELEMENT (interlace), interlace->srcpad);
gst_pad_set_setcaps_function (interlace->srcpad, gst_interlace_setcaps);
gst_pad_set_getcaps_function (interlace->srcpad, gst_interlace_getcaps);
interlace->top_field_first = FALSE;
}
static GstCaps *
gst_interlace_getcaps (GstPad * pad)
{
GstInterlace *interlace;
GstPad *otherpad;
GstCaps *othercaps;
GstCaps *icaps;
GstStructure *structure;
int i;
interlace = GST_INTERLACE (gst_pad_get_parent (pad));
otherpad =
(pad == interlace->srcpad) ? interlace->sinkpad : interlace->srcpad;
othercaps = gst_pad_peer_get_caps (otherpad);
if (othercaps == NULL) {
icaps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
} else {
icaps = gst_caps_intersect (othercaps,
gst_pad_get_pad_template_caps (otherpad));
}
for (i = 0; i < gst_caps_get_size (icaps); i++) {
structure = gst_caps_get_structure (icaps, i);
if (pad == interlace->srcpad) {
gst_structure_set (structure, "interlaced", G_TYPE_BOOLEAN, TRUE, NULL);
} else {
gst_structure_set (structure, "interlaced", G_TYPE_BOOLEAN, FALSE, NULL);
}
}
return icaps;
}
static gboolean
gst_interlace_setcaps (GstPad * pad, GstCaps * caps)
{
GstInterlace *interlace;
gboolean ret;
int width, height;
GstVideoFormat format;
gboolean interlaced = TRUE;
int fps_n, fps_d;
GstPad *otherpad;
GstCaps *othercaps;
GstStructure *structure;
interlace = GST_INTERLACE (gst_pad_get_parent (pad));
otherpad =
(pad == interlace->srcpad) ? interlace->sinkpad : interlace->srcpad;
ret = gst_video_format_parse_caps (caps, &format, &width, &height);
gst_video_format_parse_caps_interlaced (caps, &interlaced);
ret &= gst_video_parse_caps_framerate (caps, &fps_n, &fps_d);
if (!ret)
goto error;
othercaps = gst_caps_copy (caps);
structure = gst_caps_get_structure (othercaps, 0);
if (pad == interlace->srcpad) {
gst_structure_set (structure,
"interlaced", G_TYPE_BOOLEAN, FALSE,
"framerate", GST_TYPE_FRACTION, fps_n * 2, fps_d, NULL);
} else {
gst_structure_set (structure,
"interlaced", G_TYPE_BOOLEAN, TRUE,
"framerate", GST_TYPE_FRACTION, fps_n, fps_d * 2, NULL);
}
ret = gst_pad_set_caps (otherpad, othercaps);
if (!ret)
goto error;
interlace->format = format;
interlace->width = width;
interlace->height = height;
if (pad == interlace->sinkpad) {
interlace->srccaps = gst_caps_ref (othercaps);
} else {
interlace->srccaps = gst_caps_ref (caps);
}
error:
g_object_unref (interlace);
return ret;
}
static void
copy_field (GstInterlace * interlace, GstBuffer * d, GstBuffer * s,
int field_index)
{
int j;
guint8 *dest;
guint8 *src;
int width = interlace->width;
int height = interlace->height;
if (interlace->format == GST_VIDEO_FORMAT_I420 ||
interlace->format == GST_VIDEO_FORMAT_YV12) {
/* planar 4:2:0 */
for (j = field_index; j < height; j += 2) {
dest = GST_BUFFER_DATA (d) + j * width;
src = GST_BUFFER_DATA (s) + j * width;
memcpy (dest, src, width);
}
for (j = field_index; j < height / 2; j += 2) {
dest = GST_BUFFER_DATA (d) + width * height + j * width / 2;
src = GST_BUFFER_DATA (s) + width * height + j * width / 2;
memcpy (dest, src, width / 2);
}
for (j = field_index; j < height / 2; j += 2) {
dest =
GST_BUFFER_DATA (d) + width * height + width / 2 * height / 2 +
j * width / 2;
src =
GST_BUFFER_DATA (s) + width * height + width / 2 * height / 2 +
j * width / 2;
memcpy (dest, src, width / 2);
}
} else {
/* packed 4:2:2 */
for (j = field_index; j < height; j += 2) {
dest = GST_BUFFER_DATA (d) + j * width * 2;
src = GST_BUFFER_DATA (s) + j * width * 2;
memcpy (dest, src, width * 2);
}
}
}
static GstFlowReturn
gst_interlace_chain (GstPad * pad, GstBuffer * buffer)
{
GstInterlace *interlace = GST_INTERLACE (gst_pad_get_parent (pad));
GstFlowReturn ret;
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));
GST_DEBUG ("duration %" GST_TIME_FORMAT " flags %04x %s %s %s",
GST_TIME_ARGS (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_ERROR ("discont");
}
if (interlace->stored_frame == NULL) {
interlace->stored_frame = buffer;
ret = GST_FLOW_OK;
} else {
GstBuffer *output_buffer;
output_buffer = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer));
copy_field (interlace, output_buffer, interlace->stored_frame,
!interlace->top_field_first);
copy_field (interlace, output_buffer, buffer, interlace->top_field_first);
GST_BUFFER_TIMESTAMP (output_buffer) =
GST_BUFFER_TIMESTAMP (interlace->stored_frame);
GST_BUFFER_DURATION (output_buffer) =
GST_BUFFER_DURATION (interlace->stored_frame) +
GST_BUFFER_DURATION (buffer);
gst_buffer_set_caps (output_buffer, interlace->srccaps);
if (interlace->top_field_first) {
GST_BUFFER_FLAG_SET (output_buffer, GST_VIDEO_BUFFER_TFF);
}
ret = gst_pad_push (interlace->srcpad, output_buffer);
gst_buffer_unref (buffer);
gst_buffer_unref (interlace->stored_frame);
interlace->stored_frame = NULL;
}
gst_object_unref (interlace);
return ret;
}
static void
gst_interlace_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstInterlace *interlace = GST_INTERLACE (object);
switch (prop_id) {
case PROP_TOP_FIELD_FIRST:
interlace->top_field_first = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_interlace_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstInterlace *interlace = GST_INTERLACE (object);
switch (prop_id) {
case PROP_TOP_FIELD_FIRST:
g_value_set_boolean (value, interlace->top_field_first);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_interlace_change_state (GstElement * element, GstStateChange transition)
{
//GstInterlace *interlace = GST_INTERLACE (element);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
//gst_interlace_reset (interlace);
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_interlace_debug, "interlace", 0,
"interlace element");
return gst_element_register (plugin, "interlace", GST_RANK_NONE,
GST_TYPE_INTERLACE);
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"interlace",
"Create an interlaced video stream",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)