mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-11-23 10:11:08 +00:00
Code Issues 1 Projects Releases Wiki Activity

effectv: port dice

Browse source
This commit is contained in:
Wim Taymans 2011-07-06 18:32:45 +02:00
parent 50b0751799
commit a1b4b089ec
2 changed files with 64 additions and 58 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

118
gst/effectv/gstdice.c
View file

@ -53,7 +53,6 @@
#include "gstdice.h"
#include "gsteffectv.h"
#include <gst/video/video.h>
#include <gst/controller/gstcontroller.h>
#define DEFAULT_CUBE_BITS 4
@ -68,24 +67,23 @@ typedef enum _dice_dir
DICE_LEFT = 3
} DiceDir;
GST_BOILERPLATE (GstDiceTV, gst_dicetv, GstVideoFilter, GST_TYPE_VIDEO_FILTER);
#define gst_dicetv_parent_class parent_class
G_DEFINE_TYPE (GstDiceTV, gst_dicetv, GST_TYPE_VIDEO_FILTER);
static void gst_dicetv_create_map (GstDiceTV * filter);
static GstStaticPadTemplate gst_dicetv_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_xRGB ";"
GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR)
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ RGBx, xRGB, BGRx, xBGR }"))
);
static GstStaticPadTemplate gst_dicetv_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx ";" GST_VIDEO_CAPS_xRGB ";"
GST_VIDEO_CAPS_BGRx ";" GST_VIDEO_CAPS_xBGR)
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ RGBx, xRGB, BGRx, xBGR }"))
);
enum
@ -99,39 +97,39 @@ gst_dicetv_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstDiceTV *filter = GST_DICETV (btrans);
GstStructure *structure;
gboolean ret = FALSE;
GstVideoInfo info;
structure = gst_caps_get_structure (incaps, 0);
if (!gst_video_info_from_caps (&info, incaps))
goto invalid_caps;
GST_OBJECT_LOCK (filter);
if (gst_structure_get_int (structure, "width", &filter->width) &&
gst_structure_get_int (structure, "height", &filter->height)) {
g_free (filter->dicemap);
filter->dicemap = (guint8 *) g_malloc (filter->height * filter->width);
gst_dicetv_create_map (filter);
ret = TRUE;
g_free (filter->dicemap);
filter->dicemap =
(guint8 *) g_malloc (GST_VIDEO_INFO_WIDTH (&info) *
GST_VIDEO_INFO_WIDTH (&info));
gst_dicetv_create_map (filter);
return TRUE;
/* ERRORS */
invalid_caps:
{
GST_DEBUG_OBJECT (filter, "invalid caps");
return FALSE;
}
GST_OBJECT_UNLOCK (filter);
return ret;
}
static GstFlowReturn
gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
{
GstDiceTV *filter = GST_DICETV (trans);
GstVideoFrame in_frame, out_frame;
guint32 *src, *dest;
gint i, map_x, map_y, map_i, base, dx, dy, di;
gint video_width, g_cube_bits, g_cube_size;
gint video_stride, g_cube_bits, g_cube_size;
gint g_map_height, g_map_width;
GstFlowReturn ret = GST_FLOW_OK;
GstClockTime timestamp, stream_time;
const guint8 *dicemap;
src = (guint32 *) GST_BUFFER_DATA (in);
dest = (guint32 *) GST_BUFFER_DATA (out);
timestamp = GST_BUFFER_TIMESTAMP (in);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
@ -142,8 +140,14 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (G_OBJECT (filter), stream_time);
gst_video_frame_map (&in_frame, &filter->info, in, GST_MAP_READ);
gst_video_frame_map (&out_frame, &filter->info, out, GST_MAP_WRITE);
src = (guint32 *) GST_VIDEO_FRAME_PLANE_DATA (&in_frame, 0);
dest = (guint32 *) GST_VIDEO_FRAME_PLANE_DATA (&out_frame, 0);
video_stride = GST_VIDEO_FRAME_PLANE_STRIDE (&in_frame, 0);
GST_OBJECT_LOCK (filter);
video_width = filter->width;
g_cube_bits = filter->g_cube_bits;
g_cube_size = filter->g_cube_size;
g_map_height = filter->g_map_height;
@ -154,12 +158,12 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
map_i = 0;
for (map_y = 0; map_y < g_map_height; map_y++) {
for (map_x = 0; map_x < g_map_width; map_x++) {
base = (map_y << g_cube_bits) * video_width + (map_x << g_cube_bits);
base = (map_y << g_cube_bits) * video_stride + (map_x << g_cube_bits);
switch (dicemap[map_i]) {
case DICE_UP:
for (dy = 0; dy < g_cube_size; dy++) {
i = base + dy * video_width;
i = base + dy * video_stride;
for (dx = 0; dx < g_cube_size; dx++) {
dest[i] = src[i];
i++;
@ -168,10 +172,10 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
break;
case DICE_LEFT:
for (dy = 0; dy < g_cube_size; dy++) {
i = base + dy * video_width;
i = base + dy * video_stride;
for (dx = 0; dx < g_cube_size; dx++) {
di = base + (dx * video_width) + (g_cube_size - dy - 1);
di = base + (dx * video_stride) + (g_cube_size - dy - 1);
dest[di] = src[i];
i++;
}
@ -179,8 +183,8 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
break;
case DICE_DOWN:
for (dy = 0; dy < g_cube_size; dy++) {
di = base + dy * video_width;
i = base + (g_cube_size - dy - 1) * video_width + g_cube_size;
di = base + dy * video_stride;
i = base + (g_cube_size - dy - 1) * video_stride + g_cube_size;
for (dx = 0; dx < g_cube_size; dx++) {
i--;
dest[di] = src[i];
@ -190,9 +194,9 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
break;
case DICE_RIGHT:
for (dy = 0; dy < g_cube_size; dy++) {
i = base + (dy * video_width);
i = base + (dy * video_stride);
for (dx = 0; dx < g_cube_size; dx++) {
di = base + dy + (g_cube_size - dx - 1) * video_width;
di = base + dy + (g_cube_size - dx - 1) * video_stride;
dest[di] = src[i];
i++;
}
@ -207,19 +211,26 @@ gst_dicetv_transform (GstBaseTransform * trans, GstBuffer * in, GstBuffer * out)
}
GST_OBJECT_UNLOCK (filter);
return ret;
gst_video_frame_unmap (&in_frame);
gst_video_frame_unmap (&out_frame);
return GST_FLOW_OK;
}
static void
gst_dicetv_create_map (GstDiceTV * filter)
{
gint x, y, i;
gint width, height;
if (filter->height <= 0 || filter->width <= 0)
width = GST_VIDEO_INFO_WIDTH (&filter->info);
height = GST_VIDEO_INFO_HEIGHT (&filter->info);
if (width <= 0 || height <= 0)
return;
filter->g_map_height = filter->height >> filter->g_cube_bits;
filter->g_map_width = filter->width >> filter->g_cube_bits;
filter->g_map_height = height >> filter->g_cube_bits;
filter->g_map_width = width >> filter->g_cube_bits;
filter->g_cube_size = 1 << filter->g_cube_bits;
i = 0;
@ -279,26 +290,11 @@ gst_dicetv_finalize (GObject * object)
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_dicetv_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class, "DiceTV effect",
"Filter/Effect/Video",
"'Dices' the screen up into many small squares",
"Wim Taymans <wim.taymans@chello.be>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_dicetv_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_dicetv_src_template));
}
static void
gst_dicetv_class_init (GstDiceTVClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
gobject_class->set_property = gst_dicetv_set_property;
@ -310,12 +306,22 @@ gst_dicetv_class_init (GstDiceTVClass * klass)
MIN_CUBE_BITS, MAX_CUBE_BITS, DEFAULT_CUBE_BITS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_CONTROLLABLE));
gst_element_class_set_details_simple (gstelement_class, "DiceTV effect",
"Filter/Effect/Video",
"'Dices' the screen up into many small squares",
"Wim Taymans <wim.taymans@gmail.be>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_dicetv_sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_dicetv_src_template));
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_dicetv_set_caps);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_dicetv_transform);
}
static void
gst_dicetv_init (GstDiceTV * filter, GstDiceTVClass * klass)
gst_dicetv_init (GstDiceTV * filter)
{
filter->dicemap = NULL;
filter->g_cube_bits = DEFAULT_CUBE_BITS;

4
gst/effectv/gstdice.h
View file

@ -31,6 +31,7 @@
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/video/gstvideofilter.h>
G_BEGIN_DECLS
@ -54,8 +55,7 @@ struct _GstDiceTV
GstVideoFilter videofilter;
/* < private > */
gint width, height;
GstVideoInfo info;
guint8 *dicemap;
gint g_cube_bits;