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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Ported alpha, remove alphacolor as functionality is in ffmpegcolorspace.
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
parent
d564e75b34
commit
97f9bab6e8
5 changed files with 36 additions and 567 deletions
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@ -1,3 +1,12 @@
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2005-05-17 Wim Taymans <wim@fluendo.com>
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* configure.ac:
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* gst/alpha/Makefile.am:
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* gst/alpha/gstalpha.c: (gst_alpha_class_init), (gst_alpha_init),
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(gst_alpha_sink_setcaps), (gst_alpha_chain):
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Ported alpha, remove alphacolor as functionality is in
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ffmpegcolorspace.
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2005-05-17 Wim Taymans <wim@fluendo.com>
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* ext/libcaca/gstcacasink.c: (gst_cacasink_setcaps),
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@ -1,14 +1,9 @@
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plugin_LTLIBRARIES = libgstalpha.la libgstalphacolor.la
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plugin_LTLIBRARIES = libgstalpha.la
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libgstalpha_la_SOURCES = gstalpha.c
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libgstalpha_la_CFLAGS = $(GST_CFLAGS)
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libgstalpha_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGINS_LIBS_CFLAGS)
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libgstalpha_la_LIBADD =
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libgstalpha_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstalphacolor_la_SOURCES = gstalphacolor.c
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libgstalphacolor_la_CFLAGS = $(GST_CFLAGS)
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libgstalphacolor_la_LIBADD =
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libgstalphacolor_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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noinst_HEADERS =
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@ -1,145 +0,0 @@
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<?xml version="1.0" encoding="Windows-1252"?>
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<VisualStudioProject
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ProjectType="Visual C++"
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Version="7.10"
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Name="alphacolor"
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ProjectGUID="{979C216F-0ACF-4956-AE00-055A42D678A2}"
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Keyword="Win32Proj">
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<Platforms>
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<Platform
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Name="Win32"/>
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</Platforms>
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<Configurations>
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<Configuration
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Name="Debug|Win32"
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OutputDirectory="../../win32/Debug"
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IntermediateDirectory="../../win32/Debug"
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ConfigurationType="2"
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CharacterSet="2">
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<Tool
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Name="VCCLCompilerTool"
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Optimization="0"
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AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;"../../gst-libs";../../../popt/include;../../../libxml2/include/libxml2"
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PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_USRDLL;alphacolor_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
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MinimalRebuild="TRUE"
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BasicRuntimeChecks="3"
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RuntimeLibrary="3"
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UsePrecompiledHeader="0"
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WarningLevel="3"
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Detect64BitPortabilityProblems="TRUE"
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DebugInformationFormat="4"/>
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<Tool
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Name="VCCustomBuildTool"/>
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<Tool
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Name="VCLinkerTool"
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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"
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OutputFile="$(OutDir)/gstalphacolor.dll"
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LinkIncremental="2"
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AdditionalLibraryDirectories="../../../gstreamer/win32/Debug;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
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ModuleDefinitionFile=""
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GenerateDebugInformation="TRUE"
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ProgramDatabaseFile="$(OutDir)/alphacolor.pdb"
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SubSystem="2"
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OptimizeReferences="2"
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ImportLibrary="$(OutDir)/gstalphacolor.lib"
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TargetMachine="1"/>
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<Tool
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Name="VCMIDLTool"/>
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<Tool
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Name="VCPostBuildEventTool"
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CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
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<Tool
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Name="VCPreBuildEventTool"/>
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<Tool
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Name="VCPreLinkEventTool"/>
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<Tool
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Name="VCResourceCompilerTool"/>
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<Tool
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Name="VCWebServiceProxyGeneratorTool"/>
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<Tool
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Name="VCXMLDataGeneratorTool"/>
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<Tool
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Name="VCWebDeploymentTool"/>
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<Tool
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Name="VCManagedWrapperGeneratorTool"/>
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<Tool
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Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
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</Configuration>
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<Configuration
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Name="Release|Win32"
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OutputDirectory="../../win32/Release"
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IntermediateDirectory="../../win32/Release"
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ConfigurationType="2"
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CharacterSet="2">
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<Tool
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Name="VCCLCompilerTool"
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AdditionalIncludeDirectories="../../../gstreamer/win32;../../../gstreamer;../../../gstreamer/libs;../../../glib;../../../glib/glib;../../../glib/gmodule;"../../gst-libs";../../../popt/include;../../../libxml2/include/libxml2"
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PreprocessorDefinitions="WIN32;NDEBUG;GST_DISABLE_GST_DEBUG;_WINDOWS;_USRDLL;alphacolor_EXPORTS;HAVE_CONFIG_H;_USE_MATH_DEFINES"
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RuntimeLibrary="2"
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UsePrecompiledHeader="0"
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WarningLevel="3"
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Detect64BitPortabilityProblems="TRUE"
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DebugInformationFormat="3"/>
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<Tool
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Name="VCCustomBuildTool"/>
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<Tool
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Name="VCLinkerTool"
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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"
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OutputFile="$(OutDir)/gstalphacolor.dll"
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LinkIncremental="1"
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AdditionalLibraryDirectories="../../../gstreamer/win32/Release;../../../glib/glib;../../../glib/gmodule;../../../glib/gthread;../../../glib/gobject;../../../gettext/lib;../../../libiconv/lib"
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ModuleDefinitionFile=""
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GenerateDebugInformation="TRUE"
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SubSystem="2"
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OptimizeReferences="2"
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EnableCOMDATFolding="2"
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ImportLibrary="$(OutDir)/gstalphacolor.lib"
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TargetMachine="1"/>
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<Tool
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Name="VCMIDLTool"/>
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<Tool
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Name="VCPostBuildEventTool"
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CommandLine="copy /Y $(TargetPath) c:\gstreamer\plugins"/>
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<Tool
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Name="VCPreBuildEventTool"/>
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<Tool
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Name="VCPreLinkEventTool"/>
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<Tool
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Name="VCResourceCompilerTool"/>
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<Tool
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Name="VCWebServiceProxyGeneratorTool"/>
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<Tool
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Name="VCXMLDataGeneratorTool"/>
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<Tool
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Name="VCWebDeploymentTool"/>
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<Tool
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Name="VCManagedWrapperGeneratorTool"/>
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<Tool
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Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
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</Configuration>
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</Configurations>
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<References>
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</References>
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<Files>
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<Filter
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Name="Source Files"
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Filter="cpp;c;cxx;def;odl;idl;hpj;bat;asm;asmx"
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UniqueIdentifier="{4FC737F1-C7A5-4376-A066-2A32D752A2FF}">
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<File
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RelativePath=".\gstalphacolor.c">
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</File>
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</Filter>
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<Filter
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Name="Header Files"
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Filter="h;hpp;hxx;hm;inl;inc;xsd"
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UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}">
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</Filter>
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<Filter
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Name="Resource Files"
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Filter="rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx"
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UniqueIdentifier="{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}">
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</Filter>
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</Files>
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<Globals>
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</Globals>
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</VisualStudioProject>
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@ -156,9 +156,8 @@ static void gst_alpha_set_property (GObject * object, guint prop_id,
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static void gst_alpha_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static GstPadLinkReturn
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gst_alpha_sink_link (GstPad * pad, const GstCaps * caps);
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static void gst_alpha_chain (GstPad * pad, GstData * _data);
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static gboolean gst_alpha_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_alpha_chain (GstPad * pad, GstBuffer * buffer);
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static GstElementStateReturn gst_alpha_change_state (GstElement * element);
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@ -233,6 +232,9 @@ gst_alpha_class_init (GstAlphaClass * klass)
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parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
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gobject_class->set_property = gst_alpha_set_property;
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gobject_class->get_property = gst_alpha_get_property;
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g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_METHOD,
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g_param_spec_enum ("method", "Method",
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"How the alpha channels should be created", GST_TYPE_ALPHA_METHOD,
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@ -256,9 +258,6 @@ gst_alpha_class_init (GstAlphaClass * klass)
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g_param_spec_float ("noise_level", "Noise Level", "Size of noise radius",
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0.0, 64.0, DEFAULT_NOISE_LEVEL, (GParamFlags) G_PARAM_READWRITE));
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gobject_class->set_property = gst_alpha_set_property;
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gobject_class->get_property = gst_alpha_get_property;
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gstelement_class->change_state = gst_alpha_change_state;
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}
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@ -271,7 +270,7 @@ gst_alpha_init (GstAlpha * alpha)
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(&gst_alpha_sink_template), "sink");
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gst_element_add_pad (GST_ELEMENT (alpha), alpha->sinkpad);
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gst_pad_set_chain_function (alpha->sinkpad, gst_alpha_chain);
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gst_pad_set_link_function (alpha->sinkpad, gst_alpha_sink_link);
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gst_pad_set_setcaps_function (alpha->sinkpad, gst_alpha_sink_setcaps);
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alpha->srcpad =
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gst_pad_new_from_template (gst_static_pad_template_get
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@ -285,8 +284,6 @@ gst_alpha_init (GstAlpha * alpha)
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alpha->target_b = DEFAULT_TARGET_B;
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alpha->angle = DEFAULT_ANGLE;
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alpha->noise_level = DEFAULT_NOISE_LEVEL;
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GST_FLAG_SET (alpha, GST_ELEMENT_EVENT_AWARE);
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}
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/* do we need this function? */
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@ -387,15 +384,15 @@ gst_alpha_get_property (GObject * object, guint prop_id, GValue * value,
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}
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}
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static GstPadLinkReturn
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gst_alpha_sink_link (GstPad * pad, const GstCaps * caps)
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static gboolean
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gst_alpha_sink_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstAlpha *alpha;
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GstStructure *structure;
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gboolean ret;
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guint32 fourcc;
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alpha = GST_ALPHA (gst_pad_get_parent (pad));
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alpha = GST_ALPHA (GST_PAD_PARENT (pad));
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structure = gst_caps_get_structure (caps, 0);
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if (gst_structure_get_fourcc (structure, "format", &fourcc)) {
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@ -407,16 +404,16 @@ gst_alpha_sink_link (GstPad * pad, const GstCaps * caps)
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alpha->ayuv = TRUE;
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break;
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default:
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return GST_PAD_LINK_REFUSED;
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return FALSE;
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}
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} else {
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return GST_PAD_LINK_REFUSED;
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return FALSE;
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}
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ret = gst_structure_get_int (structure, "width", &alpha->in_width);
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ret &= gst_structure_get_int (structure, "height", &alpha->in_height);
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return GST_PAD_LINK_OK;
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return TRUE;
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}
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static void
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@ -791,34 +788,23 @@ gst_alpha_init_params (GstAlpha * alpha)
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alpha->kg = MIN (kgl, 127);
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}
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static void
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gst_alpha_chain (GstPad * pad, GstData * _data)
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static GstFlowReturn
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gst_alpha_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstBuffer *buffer;
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GstAlpha *alpha;
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GstBuffer *outbuf;
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gint new_width, new_height;
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GstFlowReturn ret;
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alpha = GST_ALPHA (gst_pad_get_parent (pad));
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alpha = GST_ALPHA (GST_PAD_PARENT (pad));
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if (GST_IS_EVENT (_data)) {
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GstEvent *event = GST_EVENT (_data);
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switch (GST_EVENT_TYPE (event)) {
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default:
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gst_pad_event_default (pad, event);
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break;
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}
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return;
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}
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buffer = GST_BUFFER (_data);
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GST_STREAM_LOCK (pad);
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new_width = alpha->in_width;
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new_height = alpha->in_height;
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if (new_width != alpha->out_width ||
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new_height != alpha->out_height || !GST_PAD_CAPS (alpha->srcpad)) {
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new_height != alpha->out_height || !GST_RPAD_CAPS (alpha->srcpad)) {
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GstCaps *newcaps;
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newcaps = gst_caps_copy (gst_pad_get_negotiated_caps (alpha->sinkpad));
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@ -826,10 +812,7 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
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"format", GST_TYPE_FOURCC, GST_STR_FOURCC ("AYUV"),
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"width", G_TYPE_INT, new_width, "height", G_TYPE_INT, new_height, NULL);
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if (!gst_pad_try_set_caps (alpha->srcpad, newcaps)) {
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GST_ELEMENT_ERROR (alpha, CORE, NEGOTIATION, (NULL), (NULL));
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return;
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}
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gst_pad_set_caps (alpha->srcpad, newcaps);
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alpha->out_width = new_width;
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alpha->out_height = new_height;
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@ -838,6 +821,7 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
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outbuf =
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gst_buffer_new_and_alloc (ROUND_UP_2 (new_width) *
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ROUND_UP_2 (new_height) * 4);
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gst_buffer_set_caps (outbuf, GST_RPAD_CAPS (alpha->srcpad));
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
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@ -868,7 +852,11 @@ gst_alpha_chain (GstPad * pad, GstData * _data)
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gst_buffer_unref (buffer);
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gst_pad_push (alpha->srcpad, GST_DATA (outbuf));
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ret = gst_pad_push (alpha->srcpad, outbuf);
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GST_STREAM_UNLOCK (pad);
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return ret;
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}
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static GstElementStateReturn
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@ -1,378 +0,0 @@
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/* GStreamer
|
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2 of the License, or (at your option) any later version.
|
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*
|
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* 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,
|
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <string.h>
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#define GST_TYPE_ALPHA_COLOR \
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(gst_alpha_color_get_type())
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#define GST_ALPHA_COLOR(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_ALPHA_COLOR,GstAlphaColor))
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#define GST_ALPHA_COLOR_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_ALPHA_COLOR,GstAlphaColorClass))
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#define GST_IS_ALPHA_COLOR(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_ALPHA_COLOR))
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#define GST_IS_ALPHA_COLOR_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_ALPHA_COLOR))
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typedef struct _GstAlphaColor GstAlphaColor;
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typedef struct _GstAlphaColorClass GstAlphaColorClass;
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|
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struct _GstAlphaColor
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{
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GstElement element;
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/* pads */
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GstPad *sinkpad;
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GstPad *srcpad;
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|
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/* caps */
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gint in_width, in_height;
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gboolean in_rgba;
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gint out_width, out_height;
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};
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struct _GstAlphaColorClass
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{
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GstElementClass parent_class;
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};
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|
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/* elementfactory information */
|
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static GstElementDetails gst_alpha_color_details =
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GST_ELEMENT_DETAILS ("alpha color filter",
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"Filter/Effect/Video",
|
||||
"converts rgb to yuv with alpha",
|
||||
"Wim Taymans <wim@fluendo.com>");
|
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|
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|
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/* AlphaColor signals and args */
|
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enum
|
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{
|
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/* FILL ME */
|
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LAST_SIGNAL
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};
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|
||||
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)
|
||||
Loading…
Reference in a new issue