shithub: h264bsd

ref: 77d2f0d7571f5f830177189e8ac370f49db99256
dir: /js/Rakefile/

EMCC_FLAGS = ENV["EMCC_FLAGS"] || "-O3 -D_ERROR_PRINT"

EMCC_FLAGS = "-O0 -g4 -D_ASSERT_USED -D_ERROR_PRINT" if ENV["DEBUG"]

rule '.o' => ['.c'] do |t|
  sh "emcc #{t.source} -c #{EMCC_FLAGS} -o #{t.name}"
end

o_files = FileList["../src/*.c"].gsub(/c$/, 'o')

export_functions = [
	"_h264bsdAlloc",
	"_h264bsdFree",
	"_h264bsdInit",
	"_h264bsdDecode",
	"_h264bsdShutdown",
	"_h264bsdNextOutputPicture",
	"_h264bsdNextOutputPictureRGBA",
	"_h264bsdPicWidth",
	"_h264bsdPicHeight",
	"_h264bsdCroppingParams",
	"_h264bsdCheckValidParamSets",
	"_h264bsdConvertToRGBA",
]

file "h264bsd_asm.js" => o_files do                                     
	sh "emcc #{o_files.join(' ')} --memory-init-file 0 -s TOTAL_MEMORY=67108864 -s EXPORT_ALL=1 #{EMCC_FLAGS} -o h264bsd_asm.js"
end

source_files = [
	"h264bsd_canvas.js"
]

worker_source_files = [	
	"h264bsd_asm.js",
	"h264bsd_decoder.js"
]
file "h264bsd.min.js" => worker_source_files do
	sh "uglifyjs #{source_files.join(' ')} -c -m -o h264bsd.min.js"
end

file "h264bsd_decoder.min.js" => worker_source_files do
	sh "uglifyjs h264bsd_decoder.js -o _h264bsd_decoder.min.js"
	sh "cat h264bsd_asm.js > h264bsd_decoder.min.js"
	sh "cat _h264bsd_decoder.min.js >> h264bsd_decoder.min.js"
end

task :compress => ["h264bsd.min.js", "h264bsd_decoder.min.js"]

task :clean do
	o_files.each{|o| FileUtils.rm_f(o)}
	FileUtils.rm_f("h264bsd_asm.js")
	FileUtils.rm_f("h264bsd.min.js")
	FileUtils.rm_f("h264bsd_decoder.min.js")
	FileUtils.rm_f("_h264bsd_decoder.min.js")
end

desc "Check for prereq tools"
task :setup do
	sh("emcc --version") { |ok, res| fail("Can't find emscripten binaries.") unless ok }
	sh("uglifyjs --version") { |ok, res| fail("Can't find UglifyJS2 tool for minification.") unless ok }
	puts("Ready to go")
end

task :default => [:setup, "h264bsd.min.js", "h264bsd_decoder.min.js"]