Module: STBIMAGE

Extended by:
Fiddle::Importer
Defined in:
lib/stbimage.rb

Constant Summary collapse

STBIMAGE_FUNCTIONS_MAP = 
{}
@@stbi_image_import_done = 
false
@@lib_signature = 
[
  'void stbi_convert_iphone_png_to_rgb(int)',
  'const char* stbi_failure_reason(void)',
  'void stbi_hdr_to_ldr_gamma(float)',
  'void stbi_hdr_to_ldr_scale(float)',
  'void stbi_image_free(void*)',
  'int stbi_info(char const* , int*, int*, int*)', 
  # 'stbi_info_from_callbacks'
  # 'stbi_info_from_file'
  # 'stbi_info_from_memory'
  'int stbi_is_16_bit(char const*)',
  # 'stbi_is_16_bit_from_callbacks'
  # 'stbi_is_16_bit_from_file'
  # 'stbi_is_16_bit_from_memory'
  'int stbi_is_hdr(char const*)',
  # 'stbi_is_hdr_from_callbacks'
  # 'stbi_is_hdr_from_file'
  # 'stbi_is_hdr_from_memory'
  'void stbi_ldr_to_hdr_gamma(float)',
  'void stbi_ldr_to_hdr_scale(float)',
  'stbi_uc* stbi_load(char const*, int*, int*, int*, int)', 
  'stbi_us* stbi_load_16(char const*, int*, int*, int*, int)',
  # 'stbi_load_16_from_callbacks'
  # 'stbi_load_16_from_memory' 
  # 'stbi_load_from_callbacks' 
  # 'stbi_load_from_file'  
  # 'stbi_load_from_file_16'
  # 'stbi_load_from_memory' 
  # 'stbi_load_gif_from_memory'
  'float* stbi_loadf(char const*, int*, int*, int*, int)',
  # 'stbi_loadf_from_callbacks'
  # 'stbi_loadf_from_file' 
  # 'stbi_loadf_from_memory'
  'void stbi_set_flip_vertically_on_load(int)',
  'void stbi_set_flip_vertically_on_load_thread(int)',
  'void stbi_set_unpremultiply_on_load(int)',
  'int stbi_zlib_decode_buffer(char*, int, const char*, int)', 
  'char* stbi_zlib_decode_malloc(const char*, int, int*)', 
  'char* stbi_zlib_decode_malloc_guesssize(const char*, int, int, int*)',
  'char* stbi_zlib_decode_malloc_guesssize_headerflag(const char*, int, int, int*, int)',
  'int stbi_zlib_decode_noheader_buffer(char*, int, const char*, int)', 
  'char* stbi_zlib_decode_noheader_malloc(const char*, int, int*)'
]

Class Method Summary collapse

Class Method Details

.extern(signature, *opts) ⇒ Object 



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# File 'lib/stbimage.rb', line 9

def self.extern(signature, *opts)
  symname, ctype, argtype = parse_signature(signature, @type_alias)
  opt = parse_bind_options(opts)
  f = import_function(symname, ctype, argtype, opt[:call_type])
  name = symname.gsub(/@.+/,'')
  STBIMAGE_FUNCTIONS_MAP[name] = f
  begin
    /^(.+?):(\d+)/ =~ caller.first
    file, line = $1, $2.to_i
  rescue
    file, line = __FILE__, __LINE__+3
  end
  args_str="*args"
  module_eval(<<-EOS, file, line)
    def #{name}(*args, &block)
      STBIMAGE_FUNCTIONS_MAP['#{name}'].call(*args,&block)
    end
  EOS
  module_function(name)
  f
end

.import_symbols(output_error = false) ⇒ Object 



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# File 'lib/stbimage.rb', line 134

def self.import_symbols(output_error = false)
  typealias 'stbi_uc', 'unsigned char'
  typealias 'stbi_us', 'unsigned short'

  # function
  @@lib_signature.each do |sig|

    begin
      extern sig
    rescue
      $stderr.puts("[Warning] Failed to import #{sig}.") if output_error
    end

  end

      @@stbi_image_import_done = true
      
end

.load_lib(lib = nil, path = nil, output_error = false) ⇒ Object

Load native dll libary



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# File 'lib/stbimage.rb', line 35

def self.load_lib(lib = nil, path = nil, output_error = false)
  if lib == nil && path == nil

    if RUBY_PLATFORM =~ /64/

      # puts "You have a 64-bit Architecture ruby"
      if RUBY_PLATFORM =~ /mswin/ || RUBY_PLATFORM =~ /mingw/
        # puts "With Windows"
        lib, path = 'stbDLL_x64.dll', "#{__dir__}/dlls"
      elsif RUBY_PLATFORM =~ /linux/ || RUBY_PLATFORM =~ /cygwin/
        # puts "With Linux"
        lib, path = 'libstb_x64.so', "#{__dir__}/dlls"
      elsif RUBY_PLATFORM =~ /darwin/
        # puts "With macOS"
      else
        # puts "I have no idea what os are you using, so it's possible that stbimage wont't work"
      end
    
    elsif RUBY_PLATFORM =~ /arm/
    
      # puts "You have a arm architecture"
      lib, path = 'libstb_arm.so', "#{__dir__}/dlls"
    
    elsif RUBY_PLATFORM =~ /java/
    
      # puts "You have jruby!"
    
    else 
    
      # puts "You have a 32-bit Architecture ruby"
      if RUBY_PLATFORM =~ /mswin/ || RUBY_PLATFORM =~ /mingw/
        # puts "With Windows"
        lib, path = 'stbDLL_x86.dll', "#{__dir__}/dlls"
      elsif RUBY_PLATFORM =~ /linux/ || RUBY_PLATFORM =~ /cygwin/
        # puts "With Linux"
        lib, path = 'libstb_x86.so', "#{__dir__}/dlls"
      elsif RUBY_PLATFORM =~ /darwin/
        # puts "With macOS"
      else
        # puts "I have no idea what os are you using, so it's possible that stbimage wont't work"
      end
    
    end

  end

  if path
    dlload (path + '/' + lib)
  else
    dlload ("#{__dir__}/#{lib}")
  end
  import_symbols(output_error) unless @@stbi_image_import_done
end