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Ported alpha, remove alphacolor as functionality is in ffmpegcolorspace.

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Original commit message from CVS:
* configure.ac:
* gst/alpha/Makefile.am:
* gst/alpha/gstalpha.c: (gst_alpha_class_init), (gst_alpha_init),
(gst_alpha_sink_setcaps), (gst_alpha_chain):
Ported alpha,  remove alphacolor as functionality is in
ffmpegcolorspace.
This commit is contained in:
Wim Taymans 2005-05-17 18:13:19 +00:00
parent d564e75b34
commit 97f9bab6e8
5 changed files with 36 additions and 567 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
ChangeLog
View file

@ -1,3 +1,12 @@
2005-05-17 Wim Taymans <wim@fluendo.com>
* configure.ac:
* gst/alpha/Makefile.am:
* gst/alpha/gstalpha.c: (gst_alpha_class_init), (gst_alpha_init),
(gst_alpha_sink_setcaps), (gst_alpha_chain):
Ported alpha, remove alphacolor as functionality is in
ffmpegcolorspace.
2005-05-17 Wim Taymans <wim@fluendo.com> 2005-05-17 Wim Taymans <wim@fluendo.com>
* ext/libcaca/gstcacasink.c: (gst_cacasink_setcaps), * ext/libcaca/gstcacasink.c: (gst_cacasink_setcaps),

9
gst/alpha/Makefile.am
View file

@ -1,14 +1,9 @@
plugin_LTLIBRARIES = libgstalpha.la libgstalphacolor.la plugin_LTLIBRARIES = libgstalpha.la
libgstalpha_la_SOURCES = gstalpha.c libgstalpha_la_SOURCES = gstalpha.c
libgstalpha_la_CFLAGS = $(GST_CFLAGS) libgstalpha_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_LIBS_CFLAGS)
libgstalpha_la_LIBADD = libgstalpha_la_LIBADD =
libgstalpha_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) libgstalpha_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
libgstalphacolor_la_SOURCES = gstalphacolor.c
libgstalphacolor_la_CFLAGS = $(GST_CFLAGS)
libgstalphacolor_la_LIBADD =
libgstalphacolor_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = noinst_HEADERS =

145
gst/alpha/alphacolor.vcproj
View file

@ -1,145 +0,0 @@
<?xml version="1.0" encoding="Windows-1252"?>
<VisualStudioProject
ProjectType="Visual C++"
Version="7.10"
Name="alphacolor"
ProjectGUID="{979C216F-0ACF-4956-AE00-055A42D678A2}"
Keyword="Win32Proj">
<Platforms>
<Platform
Name="Win32"/>
</Platforms>
<Configurations>
<Configuration
Name="Debug|Win32"
OutputDirectory="../../win32/Debug"
IntermediateDirectory="../../win32/Debug"
ConfigurationType="2"
CharacterSet="2">
<Tool
Name="VCCLCompilerTool"
Optimization="0"
AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;&quot;../../gst-libs&quot;;../../../popt/include;../../../libxml2/include/libxml2"
PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;alphacolor_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
MinimalRebuild="TRUE"
BasicRuntimeChecks="3"
RuntimeLibrary="3"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="TRUE"
DebugInformationFormat="4"/>
<Tool
Name="VCCustomBuildTool"/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="glib-2.0.lib gmodule-2.0.lib gthread-2.0.lib gobject-2.0.lib libgstreamer.lib gstbytestream.lib iconv.lib intl.lib"
OutputFile="$(OutDir)/gstalphacolor.dll"
LinkIncremental="2"
AdditionalLibraryDirectories="../../../gstreamer/win32/Debug;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
ModuleDefinitionFile=""
GenerateDebugInformation="TRUE"
ProgramDatabaseFile="$(OutDir)/alphacolor.pdb"
SubSystem="2"
OptimizeReferences="2"
ImportLibrary="$(OutDir)/gstalphacolor.lib"
TargetMachine="1"/>
<Tool
Name="VCMIDLTool"/>
<Tool
Name="VCPostBuildEventTool"
CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
<Tool
Name="VCPreBuildEventTool"/>
<Tool
Name="VCPreLinkEventTool"/>
<Tool
Name="VCResourceCompilerTool"/>
<Tool
Name="VCWebServiceProxyGeneratorTool"/>
<Tool
Name="VCXMLDataGeneratorTool"/>
<Tool
Name="VCWebDeploymentTool"/>
<Tool
Name="VCManagedWrapperGeneratorTool"/>
<Tool
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
</Configuration>
<Configuration
Name="Release|Win32"
OutputDirectory="../../win32/Release"
IntermediateDirectory="../../win32/Release"
ConfigurationType="2"
CharacterSet="2">
<Tool
Name="VCCLCompilerTool"
AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;&quot;../../gst-libs&quot;;../../../popt/include;../../../libxml2/include/libxml2"
PreprocessorDefinitions="WIN32;NDEBUG;GST_DISABLE_GST_DEBUG;_WINDOWS;_USRDLL;alphacolor_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
RuntimeLibrary="2"
UsePrecompiledHeader="0"
WarningLevel="3"
Detect64BitPortabilityProblems="TRUE"
DebugInformationFormat="3"/>
<Tool
Name="VCCustomBuildTool"/>
<Tool
Name="VCLinkerTool"
AdditionalDependencies="glib-2.0.lib gmodule-2.0.lib gthread-2.0.lib gobject-2.0.lib libgstreamer.lib gstbytestream.lib iconv.lib intl.lib"
OutputFile="$(OutDir)/gstalphacolor.dll"
LinkIncremental="1"
AdditionalLibraryDirectories="../../../gstreamer/win32/Release;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
ModuleDefinitionFile=""
GenerateDebugInformation="TRUE"
SubSystem="2"
OptimizeReferences="2"
EnableCOMDATFolding="2"
ImportLibrary="$(OutDir)/gstalphacolor.lib"
TargetMachine="1"/>
<Tool
Name="VCMIDLTool"/>
<Tool
Name="VCPostBuildEventTool"
CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
<Tool
Name="VCPreBuildEventTool"/>
<Tool
Name="VCPreLinkEventTool"/>
<Tool
Name="VCResourceCompilerTool"/>
<Tool
Name="VCWebServiceProxyGeneratorTool"/>
<Tool
Name="VCXMLDataGeneratorTool"/>
<Tool
Name="VCWebDeploymentTool"/>
<Tool
Name="VCManagedWrapperGeneratorTool"/>
<Tool
Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
</Configuration>
</Configurations>
<References>
</References>
<Files>
<Filter
Name="Source Files"
Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
<File
RelativePath=".\gstalphacolor.c">
</File>
</Filter>
<Filter
Name="Header Files"
Filter="h;hpp;hxx;hm;inl;inc;xsd"
UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
</Filter>
<Filter
Name="Resource Files"
Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx"
UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
</Filter>
</Files>
<Globals>
</Globals>
</VisualStudioProject>

62
gst/alpha/gstalpha.c
View file

@ -156,9 +156,8 @@ static void gst_alpha_set_property (GObject * object, guint prop_id,
static void gst_alpha_get_property (GObject * object, guint prop_id, static void gst_alpha_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec); GValue * value, GParamSpec * pspec);
static GstPadLinkReturn static gboolean gst_alpha_sink_setcaps (GstPad * pad, GstCaps * caps);
gst_alpha_sink_link (GstPad * pad, const GstCaps * caps); static GstFlowReturn gst_alpha_chain (GstPad * pad, GstBuffer * buffer);
static void gst_alpha_chain (GstPad * pad, GstData * _data);
static GstElementStateReturn gst_alpha_change_state (GstElement * element); static GstElementStateReturn gst_alpha_change_state (GstElement * element);
@ -233,6 +232,9 @@ gst_alpha_class_init (GstAlphaClass * klass)
parent_class = g_type_class_ref (GST_TYPE_ELEMENT); parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_alpha_set_property;
gobject_class->get_property = gst_alpha_get_property;
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD, g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD,
g_param_spec_enum ("method", "Method", g_param_spec_enum ("method", "Method",
"How the alpha channels should be created", GST_TYPE_ALPHA_METHOD, "How the alpha channels should be created", GST_TYPE_ALPHA_METHOD,
@ -256,9 +258,6 @@ gst_alpha_class_init (GstAlphaClass * klass)
g_param_spec_float ("noise_level", "Noise Level", "Size of noise radius", g_param_spec_float ("noise_level", "Noise Level", "Size of noise radius",
0.0, 64.0, DEFAULT_NOISE_LEVEL, (GParamFlags) G_PARAM_READWRITE)); 0.0, 64.0, DEFAULT_NOISE_LEVEL, (GParamFlags) G_PARAM_READWRITE));
gobject_class->set_property = gst_alpha_set_property;
gobject_class->get_property = gst_alpha_get_property;
gstelement_class->change_state = gst_alpha_change_state; gstelement_class->change_state = gst_alpha_change_state;
} }
@ -271,7 +270,7 @@ gst_alpha_init (GstAlpha * alpha)
(&gst_alpha_sink_template), "sink"); (&gst_alpha_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (alpha), alpha->sinkpad); gst_element_add_pad (GST_ELEMENT (alpha), alpha->sinkpad);
gst_pad_set_chain_function (alpha->sinkpad, gst_alpha_chain); gst_pad_set_chain_function (alpha->sinkpad, gst_alpha_chain);
gst_pad_set_link_function (alpha->sinkpad, gst_alpha_sink_link); gst_pad_set_setcaps_function (alpha->sinkpad, gst_alpha_sink_setcaps);
alpha->srcpad = alpha->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get gst_pad_new_from_template (gst_static_pad_template_get
@ -285,8 +284,6 @@ gst_alpha_init (GstAlpha * alpha)
alpha->target_b = DEFAULT_TARGET_B; alpha->target_b = DEFAULT_TARGET_B;
alpha->angle = DEFAULT_ANGLE; alpha->angle = DEFAULT_ANGLE;
alpha->noise_level = DEFAULT_NOISE_LEVEL; alpha->noise_level = DEFAULT_NOISE_LEVEL;
GST_FLAG_SET (alpha, GST_ELEMENT_EVENT_AWARE);
} }
/* do we need this function? */ /* do we need this function? */
@ -387,15 +384,15 @@ gst_alpha_get_property (GObject * object, guint prop_id, GValue * value,
} }
} }
static GstPadLinkReturn static gboolean
gst_alpha_sink_link (GstPad * pad, const GstCaps * caps) gst_alpha_sink_setcaps (GstPad * pad, GstCaps * caps)
{ {
GstAlpha *alpha; GstAlpha *alpha;
GstStructure *structure; GstStructure *structure;
gboolean ret; gboolean ret;
guint32 fourcc; guint32 fourcc;
alpha = GST_ALPHA (gst_pad_get_parent (pad)); alpha = GST_ALPHA (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0); structure = gst_caps_get_structure (caps, 0);
if (gst_structure_get_fourcc (structure, "format", &fourcc)) { if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
@ -407,16 +404,16 @@ gst_alpha_sink_link (GstPad * pad, const GstCaps * caps)
alpha->ayuv = TRUE; alpha->ayuv = TRUE;
break; break;
default: default:
return GST_PAD_LINK_REFUSED; return FALSE;
} }
} else { } else {
return GST_PAD_LINK_REFUSED; return FALSE;
} }
ret = gst_structure_get_int (structure, "width", &alpha->in_width); ret = gst_structure_get_int (structure, "width", &alpha->in_width);
ret &= gst_structure_get_int (structure, "height", &alpha->in_height); ret &= gst_structure_get_int (structure, "height", &alpha->in_height);
return GST_PAD_LINK_OK; return TRUE;
} }
static void static void
@ -791,34 +788,23 @@ gst_alpha_init_params (GstAlpha * alpha)
alpha->kg = MIN (kgl, 127); alpha->kg = MIN (kgl, 127);
} }
static void static GstFlowReturn
gst_alpha_chain (GstPad * pad, GstData * _data) gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
{ {
GstBuffer *buffer;
GstAlpha *alpha; GstAlpha *alpha;
GstBuffer *outbuf; GstBuffer *outbuf;
gint new_width, new_height; gint new_width, new_height;
GstFlowReturn ret;
alpha = GST_ALPHA (gst_pad_get_parent (pad)); alpha = GST_ALPHA (GST_PAD_PARENT (pad));
if (GST_IS_EVENT (_data)) { GST_STREAM_LOCK (pad);
GstEvent *event = GST_EVENT (_data);
switch (GST_EVENT_TYPE (event)) {
default:
gst_pad_event_default (pad, event);
break;
}
return;
}
buffer = GST_BUFFER (_data);
new_width = alpha->in_width; new_width = alpha->in_width;
new_height = alpha->in_height; new_height = alpha->in_height;
if (new_width != alpha->out_width || if (new_width != alpha->out_width ||
new_height != alpha->out_height || !GST_PAD_CAPS (alpha->srcpad)) { new_height != alpha->out_height || !GST_RPAD_CAPS (alpha->srcpad)) {
GstCaps *newcaps; GstCaps *newcaps;
newcaps = gst_caps_copy (gst_pad_get_negotiated_caps (alpha->sinkpad)); newcaps = gst_caps_copy (gst_pad_get_negotiated_caps (alpha->sinkpad));
@ -826,10 +812,7 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
"format", GST_TYPE_FOURCC, GST_STR_FOURCC ("AYUV"), "format", GST_TYPE_FOURCC, GST_STR_FOURCC ("AYUV"),
"width", G_TYPE_INT, new_width, "height", G_TYPE_INT, new_height, NULL); "width", G_TYPE_INT, new_width, "height", G_TYPE_INT, new_height, NULL);
if (!gst_pad_try_set_caps (alpha->srcpad, newcaps)) { gst_pad_set_caps (alpha->srcpad, newcaps);
GST_ELEMENT_ERROR (alpha, CORE, NEGOTIATION, (NULL), (NULL));
return;
}
alpha->out_width = new_width; alpha->out_width = new_width;
alpha->out_height = new_height; alpha->out_height = new_height;
@ -838,6 +821,7 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
outbuf = outbuf =
gst_buffer_new_and_alloc (ROUND_UP_2 (new_width) * gst_buffer_new_and_alloc (ROUND_UP_2 (new_width) *
ROUND_UP_2 (new_height) * 4); ROUND_UP_2 (new_height) * 4);
gst_buffer_set_caps (outbuf, GST_RPAD_CAPS (alpha->srcpad));
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer); GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer); GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
@ -868,7 +852,11 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
gst_buffer_unref (buffer); gst_buffer_unref (buffer);
gst_pad_push (alpha->srcpad, GST_DATA (outbuf)); ret = gst_pad_push (alpha->srcpad, outbuf);
GST_STREAM_UNLOCK (pad);
return ret;
} }
static GstElementStateReturn static GstElementStateReturn

378
gst/alpha/gstalphacolor.c
View file

@ -1,378 +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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/video/video.h>
#include <string.h>
#define GST_TYPE_ALPHA_COLOR \
(gst_alpha_color_get_type())
#define GST_ALPHA_COLOR(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALPHA_COLOR,GstAlphaColor))
#define GST_ALPHA_COLOR_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALPHA_COLOR,GstAlphaColorClass))
#define GST_IS_ALPHA_COLOR(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALPHA_COLOR))
#define GST_IS_ALPHA_COLOR_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALPHA_COLOR))
typedef struct _GstAlphaColor GstAlphaColor;
typedef struct _GstAlphaColorClass GstAlphaColorClass;
struct _GstAlphaColor
{
GstElement element;
/* pads */
GstPad *sinkpad;
GstPad *srcpad;
/* caps */
gint in_width, in_height;
gboolean in_rgba;
gint out_width, out_height;
};
struct _GstAlphaColorClass
{
GstElementClass parent_class;
};
/* elementfactory information */
static GstElementDetails gst_alpha_color_details =
GST_ELEMENT_DETAILS ("alpha color filter",
"Filter/Effect/Video",
"converts rgb to yuv with alpha",
"Wim Taymans <wim@fluendo.com>");
/* AlphaColor signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0,
/* FILL ME */
};
static GstStaticPadTemplate gst_alpha_color_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 gst_alpha_color_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV"))
);
static void gst_alpha_color_base_init (gpointer g_class);
static void gst_alpha_color_class_init (GstAlphaColorClass * klass);
static void gst_alpha_color_init (GstAlphaColor * alpha);
static void gst_alpha_color_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_alpha_color_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstPadLinkReturn
gst_alpha_color_sink_link (GstPad * pad, const GstCaps * caps);
static void gst_alpha_color_chain (GstPad * pad, GstData * _data);
static GstElementStateReturn gst_alpha_color_change_state (GstElement *
element);
static GstElementClass *parent_class = NULL;
/* static guint gst_alpha_color_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_alpha_color_get_type (void)
{
static GType alpha_type = 0;
if (!alpha_type) {
static const GTypeInfo alpha_info = {
sizeof (GstAlphaColorClass),
gst_alpha_color_base_init,
NULL,
(GClassInitFunc) gst_alpha_color_class_init,
NULL,
NULL,
sizeof (GstAlphaColor),
0,
(GInstanceInitFunc) gst_alpha_color_init,
};
alpha_type =
g_type_register_static (GST_TYPE_ELEMENT, "GstAlphaColor", &alpha_info,
0);
}
return alpha_type;
}
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 (&gst_alpha_color_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_alpha_color_src_template));
}
static void
gst_alpha_color_class_init (GstAlphaColorClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
gobject_class->set_property = gst_alpha_color_set_property;
gobject_class->get_property = gst_alpha_color_get_property;
gstelement_class->change_state = gst_alpha_color_change_state;
}
static void
gst_alpha_color_init (GstAlphaColor * alpha)
{
/* create the sink and src pads */
alpha->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_alpha_color_sink_template), "sink");
gst_element_add_pad (GST_ELEMENT (alpha), alpha->sinkpad);
gst_pad_set_chain_function (alpha->sinkpad, gst_alpha_color_chain);
gst_pad_set_link_function (alpha->sinkpad, gst_alpha_color_sink_link);
alpha->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_alpha_color_src_template), "src");
gst_element_add_pad (GST_ELEMENT (alpha), alpha->srcpad);
GST_FLAG_SET (alpha, GST_ELEMENT_EVENT_AWARE);
}
/* do we need this function? */
static void
gst_alpha_color_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAlphaColor *alpha;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_ALPHA_COLOR (object));
alpha = GST_ALPHA_COLOR (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_alpha_color_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstAlphaColor *alpha;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail (GST_IS_ALPHA_COLOR (object));
alpha = GST_ALPHA_COLOR (object);
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstPadLinkReturn
gst_alpha_color_sink_link (GstPad * pad, const GstCaps * caps)
{
GstAlphaColor *alpha;
GstStructure *structure;
gboolean ret;
gdouble fps;
gint red_mask;
alpha = GST_ALPHA_COLOR (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
ret = gst_structure_get_int (structure, "width", &alpha->in_width);
ret &= gst_structure_get_int (structure, "height", &alpha->in_height);
ret &= gst_structure_get_double (structure, "framerate", &fps);
ret &= gst_structure_get_int (structure, "red_mask", &red_mask);
if (!ret)
return GST_PAD_LINK_REFUSED;
alpha->in_rgba = TRUE;
#if (G_BYTE_ORDER == G_BIG_ENDIAN)
if (red_mask != 0x000000ff)
#else
if (red_mask != 0x00ff0000)
#endif
alpha->in_rgba = FALSE;
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_STR_FOURCC ("AYUV"),
"framerate", G_TYPE_DOUBLE, fps,
"width", G_TYPE_INT, alpha->in_width,
"height", G_TYPE_INT, alpha->in_height, NULL);
return gst_pad_try_set_caps (alpha->srcpad, caps);
}
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 void
gst_alpha_color_chain (GstPad * pad, GstData * _data)
{
GstBuffer *buffer;
GstAlphaColor *alpha;
GstBuffer *outbuf;
gint width, height;
alpha = GST_ALPHA_COLOR (gst_pad_get_parent (pad));
if (GST_IS_EVENT (_data)) {
GstEvent *event = GST_EVENT (_data);
switch (GST_EVENT_TYPE (event)) {
default:
gst_pad_event_default (pad, event);
break;
}
return;
}
buffer = GST_BUFFER (_data);
width = alpha->in_width;
height = alpha->in_height;
outbuf = gst_buffer_copy_on_write (buffer);
if (alpha->in_rgba)
transform_rgb (GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
else
transform_bgr (GST_BUFFER_DATA (outbuf), GST_BUFFER_SIZE (outbuf));
gst_pad_push (alpha->srcpad, GST_DATA (outbuf));
}
static GstElementStateReturn
gst_alpha_color_change_state (GstElement * element)
{
GstAlphaColor *alpha;
alpha = GST_ALPHA_COLOR (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
break;
case GST_STATE_READY_TO_NULL:
break;
}
parent_class->change_state (element);
return GST_STATE_SUCCESS;
}
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",
"colorspace conversion preserving the alpha channels",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE, GST_ORIGIN)