+++ /dev/null
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- * Copyright (C) <2004> Jan Schmidt <thaytan@mad.scientist.com>
- * Copyright (C) <2004> Tim-Philipp Mueller <t.i.m@orange.net>
- *
- * 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., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-#include <pixbufscale.h>
-#include <gst/video/video.h>
-#include <gdk-pixbuf/gdk-pixbuf.h>
-
-#define ROUND_UP_2(x) (((x)+1)&~1)
-#define ROUND_UP_4(x) (((x)+3)&~3)
-#define ROUND_UP_8(x) (((x)+7)&~7)
-
-/* These match the ones gstvideoconvert uses (Tim) */
-#define GST_RGB24_ROWSTRIDE(width) (ROUND_UP_4 ((width)*3))
-#define GST_RGB24_SIZE(width,height) ((height)*GST_RGB24_ROWSTRIDE(width))
-
-
-GST_DEBUG_CATEGORY_STATIC (pixbufscale_debug);
-#define GST_CAT_DEFAULT pixbufscale_debug
-
-/* GstPixbufScale signals and args */
-enum
-{
- /* FILL ME */
- LAST_SIGNAL
-};
-
-enum
-{
- ARG_0,
- ARG_METHOD
- /* FILL ME */
-};
-
-static GstStaticPadTemplate gst_pixbufscale_src_template =
-GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
- );
-
-static GstStaticPadTemplate gst_pixbufscale_sink_template =
-GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("RGB"))
- );
-
-#define GST_TYPE_PIXBUFSCALE_METHOD (gst_pixbufscale_method_get_type())
-static GType
-gst_pixbufscale_method_get_type (void)
-{
- static GType pixbufscale_method_type = 0;
- static const GEnumValue pixbufscale_methods[] = {
- {GST_PIXBUFSCALE_NEAREST, "0", "Nearest Neighbour"},
- {GST_PIXBUFSCALE_TILES, "1", "Tiles"},
- {GST_PIXBUFSCALE_BILINEAR, "2", "Bilinear"},
- {GST_PIXBUFSCALE_HYPER, "3", "Hyper"},
- {0, NULL, NULL},
- };
-
- if (!pixbufscale_method_type) {
- pixbufscale_method_type =
- g_enum_register_static ("GstPixbufScaleMethod", pixbufscale_methods);
- }
- return pixbufscale_method_type;
-}
-
-static void gst_pixbufscale_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_pixbufscale_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-
-static GstCaps *gst_pixbufscale_transform_caps (GstBaseTransform * trans,
- GstPadDirection direction, GstCaps * caps, GstCaps * filter);
-static gboolean gst_pixbufscale_set_info (GstVideoFilter * filter,
- GstCaps * in, GstVideoInfo * in_info, GstCaps * out,
- GstVideoInfo * out_info);
-static GstCaps *gst_pixbufscale_fixate_caps (GstBaseTransform * base,
- GstPadDirection direction, GstCaps * caps, GstCaps * othercaps);
-static GstFlowReturn gst_pixbufscale_transform_frame (GstVideoFilter * filter,
- GstVideoFrame * in, GstVideoFrame * out);
-static gboolean gst_pixbufscale_handle_src_event (GstBaseTransform * trans,
- GstEvent * event);
-
-#define gst_pixbufscale_parent_class parent_class
-G_DEFINE_TYPE (GstPixbufScale, gst_pixbufscale, GST_TYPE_VIDEO_FILTER);
-
-static void
-gst_pixbufscale_class_init (GstPixbufScaleClass * klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *element_class;
- GstBaseTransformClass *trans_class;
- GstVideoFilterClass *filter_class;
-
- gobject_class = (GObjectClass *) klass;
- element_class = (GstElementClass *) klass;
- trans_class = (GstBaseTransformClass *) klass;
- filter_class = (GstVideoFilterClass *) klass;
-
- gst_element_class_set_static_metadata (element_class,
- "GdkPixbuf image scaler", "Filter/Effect/Video", "Resizes video",
- "Jan Schmidt <thaytan@mad.scientist.com>, "
- "Wim Taymans <wim.taymans@chello.be>, "
- "Renato Filho <renato.filho@indt.org.br>");
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_pixbufscale_src_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&gst_pixbufscale_sink_template));
-
- gobject_class->set_property = gst_pixbufscale_set_property;
- gobject_class->get_property = gst_pixbufscale_get_property;
-
- g_object_class_install_property (gobject_class,
- ARG_METHOD,
- g_param_spec_enum ("method", "method", "method",
- GST_TYPE_PIXBUFSCALE_METHOD, GST_PIXBUFSCALE_BILINEAR,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- trans_class->transform_caps =
- GST_DEBUG_FUNCPTR (gst_pixbufscale_transform_caps);
- trans_class->fixate_caps = GST_DEBUG_FUNCPTR (gst_pixbufscale_fixate_caps);
- trans_class->src_event = GST_DEBUG_FUNCPTR (gst_pixbufscale_handle_src_event);
- trans_class->passthrough_on_same_caps = TRUE;
-
- filter_class->set_info = GST_DEBUG_FUNCPTR (gst_pixbufscale_set_info);
- filter_class->transform_frame =
- GST_DEBUG_FUNCPTR (gst_pixbufscale_transform_frame);
-
- parent_class = g_type_class_peek_parent (klass);
-}
-
-static void
-gst_pixbufscale_init (GstPixbufScale * pixbufscale)
-{
- GST_DEBUG_OBJECT (pixbufscale, "_init");
-
- pixbufscale->method = GST_PIXBUFSCALE_TILES;
- pixbufscale->gdk_method = GDK_INTERP_TILES;
-}
-
-static void
-gst_pixbufscale_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstPixbufScale *src;
-
- g_return_if_fail (GST_IS_PIXBUFSCALE (object));
- src = GST_PIXBUFSCALE (object);
-
- switch (prop_id) {
- case ARG_METHOD:
- src->method = g_value_get_enum (value);
- switch (src->method) {
- case GST_PIXBUFSCALE_NEAREST:
- src->gdk_method = GDK_INTERP_NEAREST;
- break;
- case GST_PIXBUFSCALE_TILES:
- src->gdk_method = GDK_INTERP_TILES;
- break;
- case GST_PIXBUFSCALE_BILINEAR:
- src->gdk_method = GDK_INTERP_BILINEAR;
- break;
- case GST_PIXBUFSCALE_HYPER:
- src->gdk_method = GDK_INTERP_HYPER;
- break;
- }
- break;
- default:
- break;
- }
-}
-
-static void
-gst_pixbufscale_get_property (GObject * object, guint prop_id, GValue * value,
- GParamSpec * pspec)
-{
- GstPixbufScale *src;
-
- g_return_if_fail (GST_IS_PIXBUFSCALE (object));
- src = GST_PIXBUFSCALE (object);
-
- switch (prop_id) {
- case ARG_METHOD:
- g_value_set_enum (value, src->method);
- break;
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-
-static GstCaps *
-gst_pixbufscale_transform_caps (GstBaseTransform * trans,
- GstPadDirection direction, GstCaps * caps, GstCaps * filter)
-{
- GstCaps *ret;
- int i;
-
- 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");
- }
-
- if (filter) {
- GstCaps *intersection;
-
- intersection =
- gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
- gst_caps_unref (ret);
- ret = intersection;
- }
-
- GST_DEBUG_OBJECT (trans, "returning caps: %" GST_PTR_FORMAT, ret);
- return ret;
-}
-
-static gboolean
-gst_pixbufscale_set_info (GstVideoFilter * filter, GstCaps * in,
- GstVideoInfo * in_info, GstCaps * out, GstVideoInfo * out_info)
-{
- if (in_info->width == out_info->width && in_info->height == out_info->height) {
- gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), TRUE);
- } else {
- gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (filter), FALSE);
- }
-
- GST_DEBUG_OBJECT (filter, "from=%dx%d, size %" G_GSIZE_FORMAT
- " -> to=%dx%d, size %" G_GSIZE_FORMAT,
- in_info->width, in_info->height, in_info->size,
- out_info->width, out_info->height, out_info->size);
-
- return TRUE;
-}
-
-static GstCaps *
-gst_pixbufscale_fixate_caps (GstBaseTransform * base, GstPadDirection direction,
- GstCaps * caps, GstCaps * othercaps)
-{
- GstStructure *ins, *outs;
- const GValue *from_par, *to_par;
-
- othercaps = gst_caps_truncate (othercaps);
- othercaps = gst_caps_make_writable (othercaps);
-
- GST_DEBUG_OBJECT (base, "trying to fixate othercaps %" GST_PTR_FORMAT
- " based on caps %" GST_PTR_FORMAT, othercaps, caps);
-
- ins = gst_caps_get_structure (caps, 0);
- outs = gst_caps_get_structure (othercaps, 0);
-
- from_par = gst_structure_get_value (ins, "pixel-aspect-ratio");
- to_par = gst_structure_get_value (outs, "pixel-aspect-ratio");
-
- if (from_par && to_par) {
- GValue to_ratio = { 0, }; /* w/h of output video */
- int from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d;
- int count = 0, w = 0, h = 0, num, den;
-
- /* if both width and height are already fixed, we can't do anything
- * * about it anymore */
- if (gst_structure_get_int (outs, "width", &w))
- ++count;
- if (gst_structure_get_int (outs, "height", &h))
- ++count;
- if (count == 2) {
- GST_DEBUG_OBJECT (base, "dimensions already set to %dx%d, not fixating",
- w, h);
- goto done;
- }
-
- gst_structure_get_int (ins, "width", &from_w);
- gst_structure_get_int (ins, "height", &from_h);
- from_par_n = gst_value_get_fraction_numerator (from_par);
- from_par_d = gst_value_get_fraction_denominator (from_par);
- to_par_n = gst_value_get_fraction_numerator (to_par);
- to_par_d = gst_value_get_fraction_denominator (to_par);
-
- g_value_init (&to_ratio, GST_TYPE_FRACTION);
- gst_value_set_fraction (&to_ratio, from_w * from_par_n * to_par_d,
- from_h * from_par_d * to_par_n);
- num = gst_value_get_fraction_numerator (&to_ratio);
- den = gst_value_get_fraction_denominator (&to_ratio);
- GST_DEBUG_OBJECT (base,
- "scaling input with %dx%d and PAR %d/%d to output PAR %d/%d",
- from_w, from_h, from_par_n, from_par_d, to_par_n, to_par_d);
- GST_DEBUG_OBJECT (base,
- "resulting output should respect ratio of %d/%d", num, den);
-
- /* now find a width x height that respects this display ratio.
- * * prefer those that have one of w/h the same as the incoming video
- * * using wd / hd = num / den */
-
- /* start with same height, because of interlaced video */
- /* check hd / den is an integer scale factor, and scale wd with the PAR */
- if (from_h % den == 0) {
- GST_DEBUG_OBJECT (base, "keeping video height");
- h = from_h;
- w = h * num / den;
- } else if (from_w % num == 0) {
- GST_DEBUG_OBJECT (base, "keeping video width");
- w = from_w;
- h = w * den / num;
- } else {
- GST_DEBUG_OBJECT (base, "approximating but keeping video height");
- h = from_h;
- w = h * num / den;
- }
- GST_DEBUG_OBJECT (base, "scaling to %dx%d", w, h);
- /* now fixate */
- gst_structure_fixate_field_nearest_int (outs, "width", w);
- gst_structure_fixate_field_nearest_int (outs, "height", h);
- } else {
- gint width, height;
-
- if (gst_structure_get_int (ins, "width", &width)) {
- if (gst_structure_has_field (outs, "width")) {
- gst_structure_fixate_field_nearest_int (outs, "width", width);
- }
- }
- if (gst_structure_get_int (ins, "height", &height)) {
- if (gst_structure_has_field (outs, "height")) {
- gst_structure_fixate_field_nearest_int (outs, "height", height);
- }
- }
- }
-
-done:
- GST_DEBUG_OBJECT (base, "fixated othercaps to %" GST_PTR_FORMAT, othercaps);
-
- return othercaps;
-}
-
-static GstFlowReturn
-gst_pixbufscale_transform_frame (GstVideoFilter * filter,
- GstVideoFrame * in, GstVideoFrame * out)
-{
- GstPixbufScale *scale;
- GdkPixbuf *src_pixbuf, *dest_pixbuf;
-
- scale = GST_PIXBUFSCALE (filter);
-
- src_pixbuf =
- gdk_pixbuf_new_from_data (GST_VIDEO_FRAME_COMP_DATA (in, 0),
- GDK_COLORSPACE_RGB, FALSE, 8, GST_VIDEO_FRAME_WIDTH (in),
- GST_VIDEO_FRAME_HEIGHT (in),
- GST_VIDEO_FRAME_COMP_STRIDE (in, 0), NULL, NULL);
-
- dest_pixbuf =
- gdk_pixbuf_new_from_data (GST_VIDEO_FRAME_COMP_DATA (out, 0),
- GDK_COLORSPACE_RGB, FALSE, 8, GST_VIDEO_FRAME_WIDTH (out),
- GST_VIDEO_FRAME_HEIGHT (out),
- GST_VIDEO_FRAME_COMP_STRIDE (out, 0), NULL, NULL);
-
- gdk_pixbuf_scale (src_pixbuf, dest_pixbuf, 0, 0,
- GST_VIDEO_FRAME_WIDTH (out),
- GST_VIDEO_FRAME_HEIGHT (out), 0, 0,
- (double) GST_VIDEO_FRAME_WIDTH (out) / GST_VIDEO_FRAME_WIDTH (in),
- (double) GST_VIDEO_FRAME_HEIGHT (out) / GST_VIDEO_FRAME_HEIGHT (in),
- scale->gdk_method);
-
- g_object_unref (src_pixbuf);
- g_object_unref (dest_pixbuf);
-
- return GST_FLOW_OK;
-}
-
-static gboolean
-gst_pixbufscale_handle_src_event (GstBaseTransform * trans, GstEvent * event)
-{
- GstPixbufScale *pixbufscale;
- gboolean ret;
- double a;
- GstStructure *structure;
-
- pixbufscale = GST_PIXBUFSCALE (trans);
-
- GST_DEBUG_OBJECT (pixbufscale, "handling %s event",
- GST_EVENT_TYPE_NAME (event));
-
- switch (GST_EVENT_TYPE (event)) {
- case GST_EVENT_NAVIGATION:
- event =
- GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
-
- 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 * pixbufscale->from_width / pixbufscale->to_width, NULL);
- }
- if (gst_structure_get_double (structure, "pointer_y", &a)) {
- gst_structure_set (structure, "pointer_y", G_TYPE_DOUBLE,
- a * pixbufscale->from_height / pixbufscale->to_height, NULL);
- }
- break;
- default:
- break;
- }
-
- ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
-
- return ret;
-}
-
-gboolean
-pixbufscale_init (GstPlugin * plugin)
-{
- if (!gst_element_register (plugin, "gdkpixbufscale", GST_RANK_NONE,
- GST_TYPE_PIXBUFSCALE))
- return FALSE;
-
- GST_DEBUG_CATEGORY_INIT (pixbufscale_debug, "gdkpixbufscale", 0,
- "pixbufscale element");
-
- return TRUE;
-}
projects / platform / upstream / gstreamer.git / commitdiff