--- a/gst_plugins_good/gst/alpha/gstalphacolor.c Fri Jul 09 16:26:45 2010 -0500
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,279 +0,0 @@
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- *
- * 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.
- */
-
-/**
- * SECTION:element-alphacolor
- *
- * The alphacolor element does memory-efficient (in-place) colourspace
- * conversion from RGBA to AYUV, preserving the alpha channel.
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "gstalphacolor.h"
-
-#include <gst/gst.h>
-#include <gst/video/video.h>
-
-#include <string.h>
-
-GST_DEBUG_CATEGORY_STATIC (alpha_color_debug);
-#define GST_CAT_DEFAULT alpha_color_debug
-
-/* elementfactory information */
-static const GstElementDetails gst_alpha_color_details =
-GST_ELEMENT_DETAILS ("Alpha color filter",
- "Filter/Effect/Video",
- "RGBA to AYUV colorspace conversion preserving the alpha channel",
- "Wim Taymans <wim@fluendo.com>");
-
-static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_RGBA ";" GST_VIDEO_CAPS_BGRA)
- );
-
-static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
- GST_PAD_SRC,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV"))
- );
-
-GST_BOILERPLATE (GstAlphaColor, gst_alpha_color, GstBaseTransform,
- GST_TYPE_BASE_TRANSFORM);
-
-static GstCaps *gst_alpha_color_transform_caps (GstBaseTransform * btrans,
- GstPadDirection direction, GstCaps * caps);
-static gboolean gst_alpha_color_set_caps (GstBaseTransform * btrans,
- GstCaps * incaps, GstCaps * outcaps);
-static GstFlowReturn gst_alpha_color_transform_ip (GstBaseTransform * btrans,
- GstBuffer * inbuf);
-
-static void
-gst_alpha_color_base_init (gpointer g_class)
-{
- GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
-
- gst_element_class_set_details (element_class, &gst_alpha_color_details);
-
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&sink_template));
- gst_element_class_add_pad_template (element_class,
- gst_static_pad_template_get (&src_template));
-}
-
-static void
-gst_alpha_color_class_init (GstAlphaColorClass * klass)
-{
- GstBaseTransformClass *gstbasetransform_class;
-
- gstbasetransform_class = (GstBaseTransformClass *) klass;
-
- gstbasetransform_class->transform_caps =
- GST_DEBUG_FUNCPTR (gst_alpha_color_transform_caps);
- gstbasetransform_class->set_caps =
- GST_DEBUG_FUNCPTR (gst_alpha_color_set_caps);
- gstbasetransform_class->transform_ip =
- GST_DEBUG_FUNCPTR (gst_alpha_color_transform_ip);
-
- GST_DEBUG_CATEGORY_INIT (alpha_color_debug, "alphacolor", 0,
- "RGB->YUV colorspace conversion preserving the alpha channels");
-}
-
-static void
-gst_alpha_color_init (GstAlphaColor * alpha, GstAlphaColorClass * g_class)
-{
- GstBaseTransform *btrans = NULL;
-
- btrans = GST_BASE_TRANSFORM (alpha);
-
- btrans->always_in_place = TRUE;
-}
-
-static GstCaps *
-gst_alpha_color_transform_caps (GstBaseTransform * btrans,
- GstPadDirection direction, GstCaps * caps)
-{
- const GstCaps *tmpl_caps = NULL;
- GstCaps *result = NULL, *local_caps = NULL;
- guint i;
-
- local_caps = gst_caps_copy (caps);
-
- for (i = 0; i < gst_caps_get_size (local_caps); i++) {
- GstStructure *structure = gst_caps_get_structure (local_caps, i);
-
- /* Throw away the structure name and set it to transformed format */
- if (direction == GST_PAD_SINK) {
- gst_structure_set_name (structure, "video/x-raw-yuv");
- } else if (direction == GST_PAD_SRC) {
- gst_structure_set_name (structure, "video/x-raw-rgb");
- }
- /* Remove any specific parameter from the structure */
- gst_structure_remove_field (structure, "format");
- gst_structure_remove_field (structure, "endianness");
- gst_structure_remove_field (structure, "depth");
- gst_structure_remove_field (structure, "bpp");
- gst_structure_remove_field (structure, "red_mask");
- gst_structure_remove_field (structure, "green_mask");
- gst_structure_remove_field (structure, "blue_mask");
- gst_structure_remove_field (structure, "alpha_mask");
- }
-
- /* Get the appropriate template */
- if (direction == GST_PAD_SINK) {
- tmpl_caps = gst_static_pad_template_get_caps (&src_template);
- } else if (direction == GST_PAD_SRC) {
- tmpl_caps = gst_static_pad_template_get_caps (&sink_template);
- }
-
- /* Intersect with our template caps */
- result = gst_caps_intersect (local_caps, tmpl_caps);
-
- gst_caps_unref (local_caps);
- gst_caps_do_simplify (result);
-
- GST_LOG ("transformed %" GST_PTR_FORMAT " to %" GST_PTR_FORMAT, caps, result);
-
- return result;
-}
-
-static gboolean
-gst_alpha_color_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
- GstCaps * outcaps)
-{
- GstAlphaColor *alpha;
- GstStructure *structure;
- gboolean ret;
- const GValue *fps;
- gint red_mask, alpha_mask;
- gint w, h, depth, bpp;
-
- alpha = GST_ALPHA_COLOR (btrans);
- structure = gst_caps_get_structure (incaps, 0);
-
- ret = gst_structure_get_int (structure, "width", &w);
- ret &= gst_structure_get_int (structure, "height", &h);
- fps = gst_structure_get_value (structure, "framerate");
- ret &= (fps != NULL && GST_VALUE_HOLDS_FRACTION (fps));
- ret &= gst_structure_get_int (structure, "red_mask", &red_mask);
-
- /* make sure these are really full RGBA caps */
- ret &= gst_structure_get_int (structure, "alpha_mask", &alpha_mask);
- ret &= gst_structure_get_int (structure, "depth", &depth);
- ret &= gst_structure_get_int (structure, "bpp", &bpp);
-
- if (!ret || alpha_mask == 0 || red_mask == 0 || depth != 32 || bpp != 32) {
- GST_DEBUG_OBJECT (alpha, "incomplete or non-RGBA input caps!");
- return FALSE;
- }
-
- alpha->in_width = w;
- alpha->in_height = h;
- alpha->in_rgba = TRUE;
-#if (G_BYTE_ORDER == G_BIG_ENDIAN)
- if (red_mask != 0x000000ff)
-#else
- if (red_mask != 0xff000000)
-#endif
- alpha->in_rgba = FALSE;
-
- return TRUE;
-}
-
-static void
-transform_rgb (guint8 * data, gint size)
-{
- guint8 y, u, v;
-
- while (size > 0) {
- y = data[0] * 0.299 + data[1] * 0.587 + data[2] * 0.114 + 0;
- u = data[0] * -0.169 + data[1] * -0.332 + data[2] * 0.500 + 128;
- v = data[0] * 0.500 + data[1] * -0.419 + data[2] * -0.0813 + 128;
-
- data[0] = data[3];
- data[1] = y;
- data[2] = u;
- data[3] = v;
-
- data += 4;
- size -= 4;
- }
-}
-
-static void
-transform_bgr (guint8 * data, gint size)
-{
- guint8 y, u, v;
-
- while (size > 0) {
- y = data[2] * 0.299 + data[1] * 0.587 + data[0] * 0.114 + 0;
- u = data[2] * -0.169 + data[1] * -0.332 + data[0] * 0.500 + 128;
- v = data[2] * 0.500 + data[1] * -0.419 + data[0] * -0.0813 + 128;
-
- data[0] = data[3];
- data[1] = y;
- data[2] = u;
- data[3] = v;
-
- data += 4;
- size -= 4;
- }
-}
-
-static GstFlowReturn
-gst_alpha_color_transform_ip (GstBaseTransform * btrans, GstBuffer * inbuf)
-{
- GstFlowReturn ret = GST_FLOW_OK;
- GstAlphaColor *alpha;
-
- alpha = GST_ALPHA_COLOR (btrans);
-
- /* Transform in place */
- if (alpha->in_rgba)
- transform_rgb (GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
- else
- transform_bgr (GST_BUFFER_DATA (inbuf), GST_BUFFER_SIZE (inbuf));
-
- return ret;
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- return gst_element_register (plugin, "alphacolor", GST_RANK_NONE,
- GST_TYPE_ALPHA_COLOR);
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "alphacolor",
- "RGBA to AYUV colorspace conversion preserving the alpha channel",
- plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
-
-
-#ifdef __SYMBIAN32__
-EXPORT_C GstPluginDesc* _GST_PLUGIN_DESC()
-{
- return &gst_plugin_desc;
-}
-
-#endif