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warp: add stride support

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This commit is contained in:
Wim Taymans 2011-07-27 12:42:21 +01:00
parent 443e9f7c1d
commit 13d0ad188f
2 changed files with 29 additions and 19 deletions
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47
gst/effectv/gstwarp.c
View file

@ -54,6 +54,7 @@
#include <math.h>
#include "gstwarp.h"
#include <gst/video/gstmetavideo.h>
#ifndef M_PI
#define M_PI 3.14159265358979323846
@ -63,7 +64,6 @@
G_DEFINE_TYPE (GstWarpTV, gst_warptv, GST_TYPE_VIDEO_FILTER);
static void initSinTable ();
static void initOffsTable (GstWarpTV * filter, gint width, gint height);
static void initDistTable (GstWarpTV * filter, gint width, gint height);
static GstStaticPadTemplate gst_warptv_src_template =
@ -97,10 +97,7 @@ gst_warptv_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
height = GST_VIDEO_INFO_HEIGHT (&info);
g_free (filter->disttable);
g_free (filter->offstable);
filter->offstable = g_malloc (height * sizeof (guint32));
filter->disttable = g_malloc (width * height * sizeof (guint32));
initOffsTable (filter, width, height);
initDistTable (filter, width, height);
return TRUE;
@ -130,16 +127,6 @@ initSinTable (void)
*tptr++ = *tsinptr++;
}
static void
initOffsTable (GstWarpTV * filter, gint width, gint height)
{
gint y;
for (y = 0; y < height; y++) {
filter->offstable[y] = y * width;
}
}
static void
initDistTable (GstWarpTV * filter, gint width, gint height)
{
@ -177,6 +164,7 @@ gst_warptv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
gint32 skip, *ctptr, *distptr;
gint32 *ctable;
guint32 *src, *dest;
gint sstride, dstride;
GstVideoFrame in_frame, out_frame;
gst_video_frame_map (&in_frame, &warptv->info, in, GST_MAP_READ);
@ -185,6 +173,9 @@ gst_warptv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
src = GST_VIDEO_FRAME_PLANE_DATA (&in_frame, 0);
dest = GST_VIDEO_FRAME_PLANE_DATA (&out_frame, 0);
sstride = GST_VIDEO_FRAME_PLANE_STRIDE (&in_frame, 0) / 4;
dstride = GST_VIDEO_FRAME_PLANE_STRIDE (&out_frame, 0) / 4;
width = GST_VIDEO_FRAME_WIDTH (&in_frame);
height = GST_VIDEO_FRAME_HEIGHT (&in_frame);
@ -226,9 +217,10 @@ gst_warptv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
dy = 0;
else if (dy > maxy)
dy = maxy;
*dest++ = src[warptv->offstable[dy] + dx];
dest[x] = src[dy * sstride + dx];
}
dest += skip;
dest += dstride;
}
warptv->tval = (warptv->tval + 1) & 511;
@ -250,13 +242,30 @@ gst_warptv_start (GstBaseTransform * trans)
return TRUE;
}
static gboolean
gst_wraptv_setup_allocation (GstBaseTransform * trans, GstQuery * query)
{
GstBufferPool *pool = NULL;
guint size, min, max, prefix, alignment;
gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
&alignment, &pool);
if (pool) {
GstStructure *config;
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_meta (config, GST_META_API_VIDEO);
gst_buffer_pool_set_config (pool, config);
}
return TRUE;
}
static void
gst_warptv_finalize (GObject * object)
{
GstWarpTV *warptv = GST_WARPTV (object);
g_free (warptv->offstable);
warptv->offstable = NULL;
g_free (warptv->disttable);
warptv->disttable = NULL;
@ -284,6 +293,8 @@ gst_warptv_class_init (GstWarpTVClass * klass)
trans_class->start = GST_DEBUG_FUNCPTR (gst_warptv_start);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_warptv_set_caps);
trans_class->setup_allocation =
GST_DEBUG_FUNCPTR (gst_wraptv_setup_allocation);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_warptv_transform);
initSinTable ();

1
gst/effectv/gstwarp.h
View file

@ -52,7 +52,6 @@ struct _GstWarpTV
/* < private > */
GstVideoInfo info;
gint *offstable;
gint32 *disttable;
gint32 ctable[1024];
gint tval;