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gst/deinterlace/gstdeinterlace.*: Provide 4:2:2 support

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Original commit message from CVS:
Patch by: Gabriel Bouvigne <bouvigne at mp3-tech dot org>
* gst/deinterlace/gstdeinterlace.c: (gst_deinterlace_class_init),
(gst_deinterlace_init), (gst_deinterlace_set_caps),
(gst_deinterlace_transform_ip), (gst_deinterlace_set_property),
(gst_deinterlace_get_property):
* gst/deinterlace/gstdeinterlace.h:
Provide 4:2:2 support
Also deinterlace chroma planes
Allow to turn on/off deinterlacing
Change of default thresholds, in order to provide acceptable results
with default params. Fixes #511001.
This commit is contained in:
Gabriel Bouvigne 2008-01-21 12:19:13 +00:00 committed by Wim Taymans
parent 48d5d5e6ee
commit 6b773560f6
3 changed files with 172 additions and 71 deletions
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15
ChangeLog
View file

@ -1,3 +1,18 @@
2008-01-21 Wim Taymans <wim.taymans@collabora.co.uk>
Patch by: Gabriel Bouvigne <bouvigne at mp3-tech dot org>
* gst/deinterlace/gstdeinterlace.c: (gst_deinterlace_class_init),
(gst_deinterlace_init), (gst_deinterlace_set_caps),
(gst_deinterlace_transform_ip), (gst_deinterlace_set_property),
(gst_deinterlace_get_property):
* gst/deinterlace/gstdeinterlace.h:
Provide 4:2:2 support
Also deinterlace chroma planes
Allow to turn on/off deinterlacing
Change of default thresholds, in order to provide acceptable results
with default params. Fixes #511001.
2008-01-21 Tim-Philipp Müller <tim at centricular dot net>
* docs/plugins/gst-plugins-bad-plugins-sections.txt:

217
gst/deinterlace/gstdeinterlace.c
View file

@ -28,16 +28,6 @@
#include "gstdeinterlace.h"
#include <gst/video/video.h>
/* these macros are adapted from videotestsrc, paint_setup_I420() */
#define GST_VIDEO_I420_Y_ROWSTRIDE(width) (GST_ROUND_UP_4(width))
#define GST_VIDEO_I420_U_ROWSTRIDE(width) (GST_ROUND_UP_8(width)/2)
#define GST_VIDEO_I420_V_ROWSTRIDE(width) ((GST_ROUND_UP_8(GST_VIDEO_I420_Y_ROWSTRIDE(width)))/2)
#define GST_VIDEO_I420_Y_OFFSET(w,h) (0)
#define GST_VIDEO_I420_U_OFFSET(w,h) (GST_VIDEO_I420_Y_OFFSET(w,h)+(GST_VIDEO_I420_Y_ROWSTRIDE(w)*GST_ROUND_UP_2(h)))
#define GST_VIDEO_I420_V_OFFSET(w,h) (GST_VIDEO_I420_U_OFFSET(w,h)+(GST_VIDEO_I420_U_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
#define GST_VIDEO_I420_SIZE(w,h) (GST_VIDEO_I420_V_OFFSET(w,h)+(GST_VIDEO_I420_V_ROWSTRIDE(w)*GST_ROUND_UP_2(h)/2))
/* elementfactory information */
static const GstElementDetails deinterlace_details =
@ -47,29 +37,33 @@ GST_ELEMENT_DETAILS ("Deinterlace",
"Wim Taymans <wim@fluendo.com>");
#define DEFAULT_DI_AREA_ONLY FALSE
#define DEFAULT_NI_AREA_ONLY FALSE
#define DEFAULT_BLEND FALSE
#define DEFAULT_THRESHOLD 50
#define DEFAULT_DEINTERLACE TRUE
#define DEFAULT_THRESHOLD 20
#define DEFAULT_EDGE_DETECT 25
enum
{
ARG_0,
ARG_DI_ONLY,
ARG_NI_ONLY,
ARG_BLEND,
ARG_THRESHOLD,
ARG_EDGE_DETECT
ARG_EDGE_DETECT,
ARG_DEINTERLACE
};
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, Y42B }"))
);
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420"))
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("{ I420, Y42B }"))
);
GST_BOILERPLATE (GstDeinterlace, gst_deinterlace, GstBaseTransform,
@ -112,9 +106,17 @@ gst_deinterlace_class_init (GstDeinterlaceClass * klass)
gobject_class->set_property = gst_deinterlace_set_property;
gobject_class->get_property = gst_deinterlace_get_property;
g_object_class_install_property (gobject_class, ARG_DEINTERLACE,
g_param_spec_boolean ("deinterlace", "deinterlace",
"turn deinterlacing on/off", DEFAULT_DEINTERLACE, G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_DI_ONLY,
g_param_spec_boolean ("di-area-only", "di-area-only", "di-area-only",
DEFAULT_DI_AREA_ONLY, G_PARAM_READWRITE));
g_param_spec_boolean ("di-area-only", "di-area-only",
"displays deinterlaced areas only", DEFAULT_DI_AREA_ONLY,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_NI_ONLY,
g_param_spec_boolean ("ni-area-only", "ni-area-only",
"displays non-interlaced areas only", DEFAULT_DI_AREA_ONLY,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, ARG_BLEND,
g_param_spec_boolean ("blend", "blend", "blend", DEFAULT_BLEND,
G_PARAM_READWRITE));
@ -137,7 +139,9 @@ static void
gst_deinterlace_init (GstDeinterlace * filter, GstDeinterlaceClass * klass)
{
filter->show_deinterlaced_area_only = DEFAULT_DI_AREA_ONLY;
filter->show_noninterlaced_area_only = DEFAULT_NI_AREA_ONLY;
filter->blend = DEFAULT_BLEND;
filter->deinterlace = DEFAULT_DEINTERLACE;
filter->threshold = DEFAULT_THRESHOLD;
filter->edge_detect = DEFAULT_EDGE_DETECT;
/*filter->threshold_blend = 0; */
@ -175,6 +179,7 @@ gst_deinterlace_set_caps (GstBaseTransform * trans, GstCaps * incaps,
{
GstDeinterlace *filter;
GstStructure *s;
gint picsize;
filter = GST_DEINTERLACE (trans);
@ -186,11 +191,45 @@ gst_deinterlace_set_caps (GstBaseTransform * trans, GstCaps * incaps,
return FALSE;
}
if (!gst_structure_get_fourcc (s, "format", &filter->fourcc))
return FALSE;
GST_LOG_OBJECT (filter, "width x height = %d x %d", filter->width,
filter->height);
if (filter->picsize != GST_VIDEO_I420_SIZE (filter->width, filter->height)) {
filter->picsize = GST_VIDEO_I420_SIZE (filter->width, filter->height);
/*4:2:0 */
filter->uv_height = filter->height / 2;
filter->y_stride = GST_ROUND_UP_4 (filter->width);
filter->u_stride = GST_ROUND_UP_8 (filter->width) / 2;
filter->v_stride = GST_ROUND_UP_8 (filter->width) / 2;
filter->y_off = 0;
filter->u_off = 0 + filter->y_stride * GST_ROUND_UP_2 (filter->height);
filter->v_off =
filter->u_off + filter->u_stride * (GST_ROUND_UP_2 (filter->height) / 2);
picsize =
(filter->v_off +
(filter->v_stride * GST_ROUND_UP_2 (filter->height) / 2));
/*4:2:2 */
if (filter->fourcc == GST_MAKE_FOURCC ('Y', '4', '2', 'B')) {
filter->uv_height = filter->height;
filter->y_stride = GST_ROUND_UP_4 (filter->width);
filter->u_stride = GST_ROUND_UP_8 (filter->width) / 2;
filter->v_stride = GST_ROUND_UP_8 (filter->width) / 2;
filter->y_off = 0;
filter->u_off = 0 + filter->y_stride * GST_ROUND_UP_2 (filter->height);
filter->v_off =
filter->u_off + filter->u_stride * (GST_ROUND_UP_2 (filter->height));
picsize =
(filter->v_off + (filter->v_stride * GST_ROUND_UP_2 (filter->height)));
}
if (filter->picsize != picsize) {
filter->picsize = picsize;
g_free (filter->src); /* free + alloc avoids memcpy */
filter->src = g_malloc0 (filter->picsize);
GST_LOG_OBJECT (filter, "temp buffer size %d", filter->picsize);
@ -204,13 +243,16 @@ gst_deinterlace_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
{
GstDeinterlace *filter;
gboolean bShowDeinterlacedAreaOnly;
gboolean bShowNoninterlacedAreaOnly;
gint y0, y1, y2, y3;
guchar *psrc1, *psrc2, *psrc3, *pdst1, *yuvptr, *src;
guchar *psrc1, *pdst1, *yuvptr, *src;
gint iInterlaceValue0, iInterlaceValue1, iInterlaceValue2;
gint x, y;
gint x, y, p;
gint y_line;
guchar *y_dst, *y_src;
guchar fill_value;
gboolean bBlend;
gboolean bDeinterlace;
gint iThreshold;
gint iEdgeDetect;
gint width, height;
@ -221,25 +263,18 @@ gst_deinterlace_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
GST_OBJECT_LOCK (filter);
bBlend = filter->blend;
bDeinterlace = filter->deinterlace;
iThreshold = filter->threshold;
iEdgeDetect = filter->edge_detect;
bShowDeinterlacedAreaOnly = filter->show_deinterlaced_area_only;
bShowNoninterlacedAreaOnly = filter->show_noninterlaced_area_only;
GST_OBJECT_UNLOCK (filter);
width = filter->width;
height = filter->height;
src = filter->src;
yuvptr = GST_BUFFER_DATA (buf);
memcpy (filter->src, yuvptr, filter->picsize);
y_dst = yuvptr; /* dst y pointer */
/* we should not change u,v because one u, v value stands for */
/* 2 pixels per 2 lines = 4 pixel and we don't want to change */
/* the color of */
y_line = GST_VIDEO_I420_Y_ROWSTRIDE (width);
y_src = src;
iThreshold = iThreshold * iThreshold * 4;
/* We don't want an integer overflow in the interlace calculation. */
@ -247,65 +282,93 @@ gst_deinterlace_transform_ip (GstBaseTransform * trans, GstBuffer * buf)
iEdgeDetect = 180;
iEdgeDetect = iEdgeDetect * iEdgeDetect;
y1 = 0; /* Avoid compiler warning. The value is not used. */
for (x = 0; x < width; x++) {
psrc3 = y_src + x;
y3 = *psrc3;
psrc2 = psrc3 + y_line;
y2 = *psrc2;
pdst1 = y_dst + x;
iInterlaceValue1 = iInterlaceValue2 = 0;
for (y = 0; y <= height; y++) {
psrc1 = psrc2;
psrc2 = psrc3;
psrc3 = psrc3 + y_line;
y0 = y1;
y1 = y2;
y2 = y3;
if (y < height - 1) {
y3 = *psrc3;
} else {
y3 = y1;
}
for (p = 0; p < 3; p++) {
switch (p) {
case 0:
y_dst = yuvptr + filter->y_off; /* dst y pointer */
y_line = filter->y_stride;
y_src = src + filter->y_off;
width = filter->width;
height = filter->height;
fill_value = 0;
break;
case 1:
y_dst = yuvptr + filter->u_off; /* dst U pointer */
y_line = filter->u_stride;
y_src = src + filter->u_off;
width = filter->width / 2;
height = filter->uv_height;
fill_value = 128;
break;
case 2:
y_dst = yuvptr + filter->v_off; /* dst V pointer */
y_line = filter->v_stride;
y_src = src + filter->v_off;
width = filter->width / 2;
height = filter->uv_height;
fill_value = 128;
break;
}
iInterlaceValue0 = iInterlaceValue1;
iInterlaceValue1 = iInterlaceValue2;
for (x = 0; x < width; x++) {
pdst1 = y_dst + x;
psrc1 = y_src + x;
iInterlaceValue1 = iInterlaceValue2 = 0;
if (y < height)
iInterlaceValue2 = ((y1 - y2) * (y3 - y2) -
((iEdgeDetect * (y1 - y3) * (y1 - y3)) >> 12)) * 10;
else
iInterlaceValue2 = 0;
for (y = 0; y < height; y++, psrc1 += y_line, pdst1 += y_line) {
/* current line is 1 */
y0 = y1 = y2 = y3 = *psrc1;
if (y > 0)
y0 = *(psrc1 - y_line);
if (y < (height - 1))
y2 = *(psrc1 + y_line);
if (y < (height - 2))
y3 = *(psrc1 + 2 * y_line);
if (y > 0) {
if (iInterlaceValue0 + 2 * iInterlaceValue1 + iInterlaceValue2 >
iThreshold) {
if (bBlend) {
*pdst1 = (unsigned char) ((y0 + 2 * y1 + y2) >> 2);
iInterlaceValue0 = iInterlaceValue1;
iInterlaceValue1 = iInterlaceValue2;
if (y < height - 1)
iInterlaceValue2 =
(ABS (y1 - y2) * ABS (y3 - y2) - ((iEdgeDetect * (y1 - y3) * (y1 -
y3)) >> 12)) * 10;
else
iInterlaceValue2 = 0;
if ((iInterlaceValue0 + 2 * iInterlaceValue1 + iInterlaceValue2 >
iThreshold) && (y > 0)) {
if (bShowNoninterlacedAreaOnly) {
*pdst1 = fill_value; /* blank the point and so the interlac area */
} else {
/* this method seems to work better than blending if the */
/* quality is pretty bad and the half pics don't fit together */
if ((y % 2) == 1) { /* if odd simply copy the value */
if (bDeinterlace) {
if (bBlend) {
*pdst1 = (unsigned char) ((y0 + 2 * y1 + y2) >> 2);
} else {
/* this method seems to work better than blending if the */
/* quality is pretty bad and the half pics don't fit together */
if ((y % 2) == 1) { /* if odd simply copy the value */
*pdst1 = *psrc1;
} else { /* if even interpolate the line (upper + lower)/2 */
*pdst1 = (unsigned char) ((y0 + y2) >> 1);
}
}
} else {
*pdst1 = *psrc1;
/**pdst1 = 0; // FIXME this is for adjusting an initial iThreshold */
} else { /* even interpolate the even line (upper + lower)/2 */
*pdst1 = (unsigned char) ((y0 + y2) >> 1);
/**pdst1 = 0; // FIXME this is for adjusting an initial iThreshold */
}
}
} else {
/* so we went below the treshold and therefore we don't have to */
/* change anything */
if (bShowDeinterlacedAreaOnly) {
/* this is for testing to see how we should tune the treshhold */
/* and shows as the things that haven't change because the */
/* threshhold was to low?? (or shows that everything is ok :-) */
*pdst1 = 0; /* blank the point and so the interlac area */
/* threshold was to low?? (or shows that everything is ok :-) */
*pdst1 = fill_value; /* blank the point and so the non-interlac area */
} else {
*pdst1 = *psrc1;
}
}
pdst1 = pdst1 + y_line;
}
}
}
@ -323,9 +386,15 @@ gst_deinterlace_set_property (GObject * object, guint prop_id,
GST_OBJECT_LOCK (filter);
switch (prop_id) {
case ARG_DEINTERLACE:
filter->deinterlace = g_value_get_boolean (value);
break;
case ARG_DI_ONLY:
filter->show_deinterlaced_area_only = g_value_get_boolean (value);
break;
case ARG_NI_ONLY:
filter->show_noninterlaced_area_only = g_value_get_boolean (value);
break;
case ARG_BLEND:
filter->blend = g_value_get_boolean (value);
break;
@ -352,9 +421,15 @@ gst_deinterlace_get_property (GObject * object, guint prop_id, GValue * value,
GST_OBJECT_LOCK (filter);
switch (prop_id) {
case ARG_DEINTERLACE:
g_value_set_boolean (value, filter->deinterlace);
break;
case ARG_DI_ONLY:
g_value_set_boolean (value, filter->show_deinterlaced_area_only);
break;
case ARG_NI_ONLY:
g_value_set_boolean (value, filter->show_noninterlaced_area_only);
break;
case ARG_BLEND:
g_value_set_boolean (value, filter->blend);
break;

11
gst/deinterlace/gstdeinterlace.h
View file

@ -40,14 +40,25 @@ struct _GstDeinterlace {
gint width;
gint height;
gint uv_height;
guint32 fourcc;
gboolean show_deinterlaced_area_only;
gboolean show_noninterlaced_area_only;
gboolean blend;
gboolean deinterlace;
gint threshold_blend; /* here we start blending */
gint threshold; /* here we start interpolating TODO FIXME */
gint edge_detect;
gint picsize;
gint y_stride;
gint u_stride;
gint v_stride;
gint y_off;
gint u_off;
gint v_off;
guchar *src;
};