gstreamer/gst/videoscale/gstvideoscale.c

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) 2005 David 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 <string.h>
#include <gst/video/video.h>
#include "gstvideoscale.h"
#include "vs_image.h"
/* debug variable definition */
GST_DEBUG_CATEGORY (videoscale_debug);
/* elementfactory information */
static GstElementDetails videoscale_details =
GST_ELEMENT_DETAILS ("Video scaler",
"Filter/Effect/Video",
"Resizes video",
"Wim Taymans <wim.taymans@chello.be>");
enum
{
PROP_0,
PROP_METHOD
/* FILL ME */
};
static GstStaticCaps gst_videoscale_format_caps[] = {
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBx),
GST_STATIC_CAPS (GST_VIDEO_CAPS_xRGB),
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGRx),
GST_STATIC_CAPS (GST_VIDEO_CAPS_xBGR),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB),
GST_STATIC_CAPS (GST_VIDEO_CAPS_BGR),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YUY2")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YVYU")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("UYVY")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("Y800")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("I420")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("YV12")),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB_16),
GST_STATIC_CAPS (GST_VIDEO_CAPS_RGB_15)
};
enum
{
GST_VIDEOSCALE_RGBx = 0,
GST_VIDEOSCALE_xRGB,
GST_VIDEOSCALE_BGRx,
GST_VIDEOSCALE_xBGR,
GST_VIDEOSCALE_RGB,
GST_VIDEOSCALE_BGR,
GST_VIDEOSCALE_AYUV,
GST_VIDEOSCALE_YUY2,
GST_VIDEOSCALE_YVYU,
GST_VIDEOSCALE_UYVY,
GST_VIDEOSCALE_Y,
GST_VIDEOSCALE_I420,
GST_VIDEOSCALE_YV12,
GST_VIDEOSCALE_RGB565,
GST_VIDEOSCALE_RGB555
};
#define GST_TYPE_VIDEOSCALE_METHOD (gst_videoscale_method_get_type())
static GType
gst_videoscale_method_get_type (void)
{
static GType videoscale_method_type = 0;
static GEnumValue videoscale_methods[] = {
{GST_VIDEOSCALE_POINT_SAMPLE, "0", "Point Sample (not implemented)"},
{GST_VIDEOSCALE_NEAREST, "1", "Nearest"},
{GST_VIDEOSCALE_BILINEAR, "2", "Bilinear"},
{GST_VIDEOSCALE_BICUBIC, "3", "Bicubic (not implemented)"},
{0, NULL, NULL},
};
if (!videoscale_method_type) {
videoscale_method_type =
g_enum_register_static ("GstVideoscaleMethod", videoscale_methods);
}
return videoscale_method_type;
}
static GstCaps *
gst_videoscale_get_capslist (void)
{
static GstCaps *caps;
if (caps == NULL) {
int i;
caps = gst_caps_new_empty ();
for (i = 0; i < G_N_ELEMENTS (gst_videoscale_format_caps); i++)
gst_caps_append (caps,
gst_caps_make_writable
(gst_static_caps_get (&gst_videoscale_format_caps[i])));
}
return caps;
}
static GstPadTemplate *
gst_videoscale_src_template_factory (void)
{
return gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
gst_caps_ref (gst_videoscale_get_capslist ()));
}
static GstPadTemplate *
gst_videoscale_sink_template_factory (void)
{
return gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
gst_caps_ref (gst_videoscale_get_capslist ()));
}
static void gst_videoscale_base_init (gpointer g_class);
static void gst_videoscale_class_init (GstVideoscaleClass * klass);
static void gst_videoscale_init (GstVideoscale * videoscale);
static gboolean gst_videoscale_handle_src_event (GstPad * pad,
GstEvent * event);
/* base transform vmethods */
static GstCaps *gst_videoscale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps);
static gboolean gst_videoscale_set_caps (GstBaseTransform * trans,
GstCaps * in, GstCaps * out);
static gboolean gst_videoscale_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, guint * size);
static GstFlowReturn gst_videoscale_transform (GstBaseTransform * trans,
GstBuffer * in, GstBuffer * out);
static void gst_videoscale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_videoscale_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstElementClass *parent_class = NULL;
GType
gst_videoscale_get_type (void)
{
static GType videoscale_type = 0;
if (!videoscale_type) {
static const GTypeInfo videoscale_info = {
sizeof (GstVideoscaleClass),
gst_videoscale_base_init,
NULL,
(GClassInitFunc) gst_videoscale_class_init,
NULL,
NULL,
sizeof (GstVideoscale),
0,
(GInstanceInitFunc) gst_videoscale_init,
};
videoscale_type =
g_type_register_static (GST_TYPE_BASE_TRANSFORM, "GstVideoscale",
&videoscale_info, 0);
}
return videoscale_type;
}
static void
gst_videoscale_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details (element_class, &videoscale_details);
gst_element_class_add_pad_template (element_class,
gst_videoscale_sink_template_factory ());
gst_element_class_add_pad_template (element_class,
gst_videoscale_src_template_factory ());
}
static void
gst_videoscale_class_init (GstVideoscaleClass * klass)
{
GObjectClass *gobject_class;
GstBaseTransformClass *trans_class;
gobject_class = (GObjectClass *) klass;
trans_class = (GstBaseTransformClass *) klass;
gobject_class->set_property = gst_videoscale_set_property;
gobject_class->get_property = gst_videoscale_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_METHOD,
g_param_spec_enum ("method", "method", "method",
GST_TYPE_VIDEOSCALE_METHOD, 0, G_PARAM_READWRITE));
trans_class->transform_caps = gst_videoscale_transform_caps;
trans_class->set_caps = gst_videoscale_set_caps;
trans_class->get_unit_size = gst_videoscale_get_unit_size;
trans_class->transform = gst_videoscale_transform;
trans_class->passthrough_on_same_caps = TRUE;
parent_class = g_type_class_peek_parent (klass);
}
static void
gst_videoscale_init (GstVideoscale * videoscale)
{
GstBaseTransform *trans = GST_BASE_TRANSFORM (videoscale);
gst_pad_set_event_function (trans->srcpad, gst_videoscale_handle_src_event);
videoscale->tmp_buf = NULL;
videoscale->method = GST_VIDEOSCALE_NEAREST;
/*videoscale->method = GST_VIDEOSCALE_BILINEAR; */
/*videoscale->method = GST_VIDEOSCALE_POINT_SAMPLE; */
}
static void
gst_videoscale_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoscale *src = GST_VIDEOSCALE (object);
switch (prop_id) {
case PROP_METHOD:
src->method = g_value_get_enum (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_videoscale_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstVideoscale *src = GST_VIDEOSCALE (object);
switch (prop_id) {
case PROP_METHOD:
g_value_set_enum (value, src->method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_videoscale_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
GstVideoscale *videoscale;
GstCaps *ret;
int i;
videoscale = GST_VIDEOSCALE (trans);
ret = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *structure = gst_caps_get_structure (ret, i);
gst_structure_set (structure,
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096, NULL);
gst_structure_remove_field (structure, "pixel-aspect-ratio");
}
GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
return ret;
}
static int
gst_videoscale_get_format (GstCaps * caps)
{
int i;
GstCaps *icaps, *scaps;
for (i = 0; i < G_N_ELEMENTS (gst_videoscale_format_caps); i++) {
scaps = gst_static_caps_get (&gst_videoscale_format_caps[i]);
icaps = gst_caps_intersect (caps, scaps);
if (!gst_caps_is_empty (icaps)) {
gst_caps_unref (icaps);
return i;
}
gst_caps_unref (icaps);
}
return -1;
}
/* calculate the size of a buffer */
static gboolean
gst_videoscale_prepare_size (gint format,
VSImage * img, gint width, gint height, guint * size)
{
gboolean res = TRUE;
img->width = width;
img->height = height;
switch (format) {
case GST_VIDEOSCALE_RGBx:
case GST_VIDEOSCALE_xRGB:
case GST_VIDEOSCALE_BGRx:
case GST_VIDEOSCALE_xBGR:
case GST_VIDEOSCALE_AYUV:
img->stride = img->width * 4;
*size = img->stride * img->height;
break;
case GST_VIDEOSCALE_RGB:
case GST_VIDEOSCALE_BGR:
img->stride = GST_ROUND_UP_4 (img->width * 3);
*size = img->stride * img->height;
break;
case GST_VIDEOSCALE_YUY2:
case GST_VIDEOSCALE_YVYU:
case GST_VIDEOSCALE_UYVY:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
case GST_VIDEOSCALE_Y:
img->stride = GST_ROUND_UP_4 (img->width);
*size = img->stride * img->height;
break;
case GST_VIDEOSCALE_I420:
case GST_VIDEOSCALE_YV12:
{
gulong img_u_stride, img_u_height;
img->stride = GST_ROUND_UP_4 (img->width);
img_u_height = GST_ROUND_UP_2 (img->height) / 2;
img_u_stride = GST_ROUND_UP_4 (img->stride / 2);
*size = img->stride * GST_ROUND_UP_2 (img->height) +
2 * img_u_stride * img_u_height;
break;
}
case GST_VIDEOSCALE_RGB565:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
case GST_VIDEOSCALE_RGB555:
img->stride = GST_ROUND_UP_4 (img->width * 2);
*size = img->stride * img->height;
break;
default:
g_warning ("don't know how to scale");
res = FALSE;
break;
}
return res;
}
static gboolean
parse_caps (GstCaps * caps, gint * format, gint * width, gint * height)
{
gboolean ret;
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", width);
ret &= gst_structure_get_int (structure, "height", height);
if (format)
*format = gst_videoscale_get_format (caps);
return ret;
}
static gboolean
gst_videoscale_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
{
GstVideoscale *videoscale;
gboolean ret;
videoscale = GST_VIDEOSCALE (trans);
ret = parse_caps (in, &videoscale->format, &videoscale->from_width,
&videoscale->from_height);
ret &= parse_caps (out, NULL, &videoscale->to_width, &videoscale->to_height);
if (!ret)
goto done;
ret = gst_videoscale_prepare_size (videoscale->format,
&videoscale->src, videoscale->from_width, videoscale->from_height,
&videoscale->src_size);
ret &= gst_videoscale_prepare_size (videoscale->format,
&videoscale->dest, videoscale->to_width, videoscale->to_height,
&videoscale->dest_size);
if (!ret)
goto done;
if (videoscale->tmp_buf)
g_free (videoscale->tmp_buf);
videoscale->tmp_buf = g_malloc (videoscale->dest.stride * 2);
/* FIXME: par */
GST_DEBUG_OBJECT (videoscale, "from=%dx%d, size %d -> to=%dx%d, size %d",
videoscale->from_width, videoscale->from_height, videoscale->src_size,
videoscale->to_width, videoscale->to_height, videoscale->dest_size);
done:
return ret;
}
static gboolean
gst_videoscale_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
guint * size)
{
GstVideoscale *videoscale;
gint format, width, height;
VSImage img;
g_return_val_if_fail (size, FALSE);
videoscale = GST_VIDEOSCALE (trans);
if (!parse_caps (caps, &format, &width, &height))
return FALSE;
if (!gst_videoscale_prepare_size (format, &img, width, height, size))
return FALSE;
return TRUE;
}
static gboolean
gst_videoscale_prepare_image (gint format, GstBuffer * buf,
VSImage * img, VSImage * img_u, VSImage * img_v)
{
gboolean res = TRUE;
img->pixels = GST_BUFFER_DATA (buf);
switch (format) {
case GST_VIDEOSCALE_I420:
case GST_VIDEOSCALE_YV12:
img_u->pixels = img->pixels + GST_ROUND_UP_2 (img->height) * img->stride;
img_u->height = GST_ROUND_UP_2 (img->height) / 2;
img_u->width = GST_ROUND_UP_2 (img->width) / 2;
img_u->stride = GST_ROUND_UP_4 (img->stride / 2);
memcpy (img_v, img_u, sizeof (*img_v));
img_v->pixels = img_u->pixels + img_u->height * img_u->stride;
break;
default:
break;
}
return res;
}
static GstFlowReturn
gst_videoscale_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
{
GstVideoscale *videoscale;
GstFlowReturn ret = GST_FLOW_OK;
VSImage *dest;
VSImage *src;
VSImage dest_u;
VSImage dest_v;
VSImage src_u;
VSImage src_v;
videoscale = GST_VIDEOSCALE (trans);
gst_buffer_stamp (out, in);
src = &videoscale->src;
dest = &videoscale->dest;
gst_videoscale_prepare_image (videoscale->format, in, src, &src_u, &src_v);
gst_videoscale_prepare_image (videoscale->format, out, dest, &dest_u,
&dest_v);
switch (videoscale->method) {
case GST_VIDEOSCALE_NEAREST:
switch (videoscale->format) {
case GST_VIDEOSCALE_RGBx:
case GST_VIDEOSCALE_xRGB:
case GST_VIDEOSCALE_BGRx:
case GST_VIDEOSCALE_xBGR:
case GST_VIDEOSCALE_AYUV:
vs_image_scale_nearest_RGBA (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB:
case GST_VIDEOSCALE_BGR:
vs_image_scale_nearest_RGB (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_YUY2:
case GST_VIDEOSCALE_YVYU:
vs_image_scale_nearest_YUYV (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_UYVY:
vs_image_scale_nearest_UYVY (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_Y:
vs_image_scale_nearest_Y (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_I420:
case GST_VIDEOSCALE_YV12:
vs_image_scale_nearest_Y (dest, src, videoscale->tmp_buf);
vs_image_scale_nearest_Y (&dest_u, &src_u, videoscale->tmp_buf);
vs_image_scale_nearest_Y (&dest_v, &src_v, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB565:
vs_image_scale_nearest_RGB565 (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB555:
vs_image_scale_nearest_RGB555 (dest, src, videoscale->tmp_buf);
break;
default:
g_warning ("don't know how to scale");
}
break;
case GST_VIDEOSCALE_BILINEAR:
case GST_VIDEOSCALE_BICUBIC:
switch (videoscale->format) {
case GST_VIDEOSCALE_RGBx:
case GST_VIDEOSCALE_xRGB:
case GST_VIDEOSCALE_BGRx:
case GST_VIDEOSCALE_xBGR:
case GST_VIDEOSCALE_AYUV:
vs_image_scale_linear_RGBA (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB:
case GST_VIDEOSCALE_BGR:
vs_image_scale_linear_RGB (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_YUY2:
case GST_VIDEOSCALE_YVYU:
vs_image_scale_linear_YUYV (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_UYVY:
vs_image_scale_linear_UYVY (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_Y:
vs_image_scale_linear_Y (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_I420:
case GST_VIDEOSCALE_YV12:
vs_image_scale_linear_Y (dest, src, videoscale->tmp_buf);
//memset (dest_u.pixels, 128, dest_u.stride * dest_u.height);
//memset (dest_v.pixels, 128, dest_v.stride * dest_v.height);
vs_image_scale_linear_Y (&dest_u, &src_u, videoscale->tmp_buf);
vs_image_scale_linear_Y (&dest_v, &src_v, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB565:
vs_image_scale_linear_RGB565 (dest, src, videoscale->tmp_buf);
break;
case GST_VIDEOSCALE_RGB555:
vs_image_scale_linear_RGB555 (dest, src, videoscale->tmp_buf);
break;
default:
g_warning ("don't know how to scale");
}
break;
default:
ret = GST_FLOW_ERROR;
break;
}
GST_LOG_OBJECT (videoscale, "pushing buffer of %d bytes",
GST_BUFFER_SIZE (out));
return ret;
}
static gboolean
gst_videoscale_handle_src_event (GstPad * pad, GstEvent * event)
{
GstVideoscale *videoscale;
double a;
GstStructure *structure;
videoscale = GST_VIDEOSCALE (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
event =
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
examples/seeking/seek.c: Update seek example. Original commit message from CVS: * examples/seeking/seek.c: (setup_dynamic_link), (make_dv_pipeline), (make_vorbis_theora_pipeline), (query_rates), (query_positions_elems), (query_positions_pads), (do_seek): Update seek example. * ext/ogg/gstoggdemux.c: (gst_ogg_pad_event), (gst_ogg_pad_typefind), (gst_ogg_demux_chain_elem_pad), (gst_ogg_demux_queue_data), (gst_ogg_demux_chain_peer), (gst_ogg_pad_submit_packet), (gst_ogg_pad_submit_page), (gst_ogg_demux_handle_event), (gst_ogg_demux_deactivate_current_chain), (gst_ogg_demux_activate_chain), (gst_ogg_demux_perform_seek), (gst_ogg_demux_collect_chain_info), (gst_ogg_demux_collect_info), (gst_ogg_demux_chain), (gst_ogg_demux_send_event), (gst_ogg_demux_loop): * ext/ogg/gstoggmux.c: (gst_ogg_mux_collected): * ext/theora/theoradec.c: (theora_dec_src_event), (theora_dec_src_getcaps), (theora_dec_sink_event), (theora_dec_push), (theora_dec_chain): * ext/vorbis/Makefile.am: * ext/vorbis/vorbisdec.c: (vorbis_dec_src_event), (vorbis_dec_sink_event), (vorbis_dec_push), (vorbis_handle_data_packet): * ext/vorbis/vorbisenc.c: (gst_vorbisenc_sink_event), (gst_vorbisenc_chain): * gst/playback/gststreaminfo.c: (cb_probe): * gst/subparse/gstsubparse.c: (gst_subparse_src_event): * gst/videorate/gstvideorate.c: (gst_videorate_event): * gst/videoscale/gstvideoscale.c: (gst_videoscale_handle_src_event): * gst/videotestsrc/gstvideotestsrc.c: (gst_videotestsrc_event): * sys/ximage/ximagesink.c: (gst_ximagesink_show_frame), (gst_ximagesink_navigation_send_event): * sys/xvimage/xvimagesink.c: (gst_xvimagesink_navigation_send_event): Various event updates and cleanups
2005-07-27 18:34:29 +00:00
structure = (GstStructure *) gst_event_get_structure (event);
if (gst_structure_get_double (structure, "pointer_x", &a)) {
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE,
a * videoscale->from_width / videoscale->to_width, NULL);
}
if (gst_structure_get_double (structure, "pointer_y", &a)) {
gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
a * videoscale->from_height / videoscale->to_height, NULL);
}
return gst_pad_event_default (pad, event);
default:
GST_DEBUG_OBJECT (videoscale, "passing on non-NAVIGATION event %p",
event);
return gst_pad_event_default (pad, event);
}
}
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "videoscale", GST_RANK_NONE,
GST_TYPE_VIDEOSCALE))
return FALSE;
GST_DEBUG_CATEGORY_INIT (videoscale_debug, "videoscale", 0,
"videoscale element");
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"videoscale",
"Resizes video", plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)