Add image source plugin

A simple plugin that does nothing more than display an image file as a
source.

plugins/CMakeLists.txt

@@ -14,6 +14,7 @@ elseif("${CMAKE_SYSTEM_NAME}" MATCHES "Linux")
 	add_subdirectory(linux-v4l2)
 endif()
 
+add_subdirectory(image-source)
 add_subdirectory(obs-x264)
 add_subdirectory(obs-libfdk)
 add_subdirectory(obs-ffmpeg)

plugins/image-source/CMakeLists.txt

@@ -0,0 +1,11 @@
+project(image-source)
+
+set(image-source_SOURCES
+	image-source.c)
+
+add_library(image-source MODULE
+	${image-source_SOURCES})
+target_link_libraries(image-source
+	libobs)
+
+install_obs_plugin(image-source)

plugins/image-source/image-source.c

@@ -0,0 +1,131 @@
+#include <obs-module.h>
+
+#define warn(format, ...) \
+	blog(LOG_WARNING, "[image_source: '%s'] " format, \
+			obs_source_getname(context->source), ##__VA_ARGS__)
+
+struct image_source {
+	obs_source_t source;
+
+	texture_t    tex;
+	uint32_t     cx;
+	uint32_t     cy;
+};
+
+static const char *image_source_get_name(void)
+{
+	/* TODO: locale */
+	return "Image";
+}
+
+static void image_source_update(void *data, obs_data_t settings)
+{
+	struct image_source *context = data;
+	const char *file = obs_data_getstring(settings, "file");
+
+	gs_entercontext(obs_graphics());
+
+	if (context->tex) {
+		texture_destroy(context->tex);
+		context->tex = NULL;
+	}
+
+	if (file) {
+		context->tex = gs_create_texture_from_file(file);
+		if (context->tex) {
+			context->cx = texture_getwidth(context->tex);
+			context->cy = texture_getheight(context->tex);
+		} else {
+			warn("failed to load texture '%s'", file);
+			context->cx = 0;
+			context->cy = 0;
+		}
+	}
+
+	gs_leavecontext();
+}
+
+static void *image_source_create(obs_data_t settings, obs_source_t source)
+{
+	struct image_source *context = bzalloc(sizeof(struct image_source));
+	context->source = source;
+
+	image_source_update(context, settings);
+	return context;
+}
+
+static void image_source_destroy(void *data)
+{
+	struct image_source *context = data;
+
+	gs_entercontext(obs_graphics());
+	texture_destroy(context->tex);
+	gs_leavecontext();
+
+	bfree(context);
+}
+
+static uint32_t image_source_getwidth(void *data)
+{
+	struct image_source *context = data;
+	return context->cx;
+}
+
+static uint32_t image_source_getheight(void *data)
+{
+	struct image_source *context = data;
+	return context->cy;
+}
+
+static void image_source_render(void *data, effect_t effect)
+{
+	struct image_source *context = data;
+	if (!context->tex)
+		return;
+
+	effect_settexture(effect_getparambyname(effect, "image"), context->tex);
+	gs_draw_sprite(context->tex, 0, context->cx, context->cy);
+}
+
+static const char *image_filter =
+	"All formats (*.bmp *.tga *.png *.jpeg *.jpg *.gif);;"
+	"BMP Files (*.bmp);;"
+	"Targa Files (*.tga);;"
+	"PNG Files (*.png);;"
+	"JPEG Files (*.jpeg *.jpg);;"
+	"GIF Files (*.gif)";
+
+static obs_properties_t image_source_properties(void)
+{
+	obs_properties_t props = obs_properties_create();
+
+	/* TODO: locale */
+	obs_properties_add_path(props, "file", "Image file", OBS_PATH_FILE,
+			image_filter, NULL);
+
+	return props;
+}
+
+static struct obs_source_info image_source_info = {
+	.id           = "image_source",
+	.type         = OBS_SOURCE_TYPE_INPUT,
+	.output_flags = OBS_SOURCE_VIDEO,
+	.getname      = image_source_get_name,
+	.create       = image_source_create,
+	.destroy      = image_source_destroy,
+	.update       = image_source_update,
+	.getwidth     = image_source_getwidth,
+	.getheight    = image_source_getheight,
+	.video_render = image_source_render,
+	.properties   = image_source_properties
+};
+
+OBS_DECLARE_MODULE()
+
+bool obs_module_load(uint32_t libobs_version)
+{
+	obs_register_source(&image_source_info);
+
+	UNUSED_PARAMETER(libobs_version);
+	return true;
+}

vs/2013/OBS.sln

@@ -78,6 +78,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "win-dshow", "win-dshow\win-
 		{6F1AC2AE-6424-401A-AF9F-A771E6BEE026} = {6F1AC2AE-6424-401A-AF9F-A771E6BEE026}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "image-source", "image-source\image-source.vcxproj", "{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Mixed Platforms = Debug|Mixed Platforms
@@ -280,6 +282,18 @@ Global
 		{E733E9CB-EA71-4E77-BD28-2D06F4AA4677}.Release|Win32.Build.0 = Release|Win32
 		{E733E9CB-EA71-4E77-BD28-2D06F4AA4677}.Release|x64.ActiveCfg = Release|x64
 		{E733E9CB-EA71-4E77-BD28-2D06F4AA4677}.Release|x64.Build.0 = Release|x64
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|Mixed Platforms.ActiveCfg = Debug|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|Mixed Platforms.Build.0 = Debug|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|Win32.ActiveCfg = Debug|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|Win32.Build.0 = Debug|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|x64.ActiveCfg = Debug|x64
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Debug|x64.Build.0 = Debug|x64
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|Mixed Platforms.ActiveCfg = Release|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|Mixed Platforms.Build.0 = Release|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|Win32.ActiveCfg = Release|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|Win32.Build.0 = Release|Win32
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|x64.ActiveCfg = Release|x64
+		{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

vs/2013/image-source/image-source.vcxproj

@@ -0,0 +1,171 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{49B9AB5A-4CF2-4AC8-84EC-CD9E537C65DE}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>imagesource</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>DynamicLibrary</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;IMAGESOURCE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../../libobs</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>libobs.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(OutDir);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy "$(OutDir)$(TargetName)$(TargetExt)" "../../../build/obs-plugins/32bit/$(TargetName)$(TargetExt)"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;IMAGESOURCE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../../libobs</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies>libobs.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(OutDir);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy "$(OutDir)$(TargetName)$(TargetExt)" "../../../build/obs-plugins/64bit/$(TargetName)$(TargetExt)"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;IMAGESOURCE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../../libobs</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalDependencies>libobs.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(OutDir);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy "$(OutDir)$(TargetName)$(TargetExt)" "../../../build/obs-plugins/32bit/$(TargetName)$(TargetExt)"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;IMAGESOURCE_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <AdditionalIncludeDirectories>../../../libobs</AdditionalIncludeDirectories>
+    </ClCompile>
+    <Link>
+      <SubSystem>Windows</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+      <AdditionalDependencies>libobs.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalLibraryDirectories>$(OutDir);%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
+    </Link>
+    <PostBuildEvent>
+      <Command>copy "$(OutDir)$(TargetName)$(TargetExt)" "../../../build/obs-plugins/64bit/$(TargetName)$(TargetExt)"</Command>
+    </PostBuildEvent>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\plugins\image-source\image-source.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

vs/2013/image-source/image-source.vcxproj.filters

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="..\..\..\plugins\image-source\image-source.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>