ffmpeg.rb in vcs_ruby-1.1.9

- old
+ new
@@ -1,121 +1,121 @@
-#
-# FFmpeg Abstraction
-#
-
-require 'capturer'
-require 'command'
-
-module VCSRuby
-  class FFmpeg < Capturer
-
-    HEADER = 10
-    ENCODING_SUPPORT = 2
-    VIDEO_CODEC = 3
-    NAME = 8
-
-    attr_reader :info, :video_streams, :audio_streams
-
-    def initialize video
-      @video = video
-      @ffmpeg = Command.new :ffmpeg, 'ffmpeg'
-      @ffprobe = Command.new :ffmpeg, 'ffprobe'
-
-      detect_version if available?
-    end
-
-    def file_valid?
-      return probe_meta_information
-    end
-
-    def name
-      :ffmpeg
-    end
-
-    def available?
-      @ffmpeg.available? && !libav?
-    end
-
-    def libav?
-      @libav
-    end
-
-    def detect_version
-      info = @ffmpeg.execute('-version')
-      match = /avconv ([\d|.|-|:]*)/.match(info)
-      @libav = !!match
-      match = /ffmpeg version ([\d|.]*)/.match(info)
-      if match
-        @version = match[1]
-      end
-    end
-
-    def grab time, image_path
-      @ffmpeg.execute "-y -ss #{time.total_seconds} -i \"#{@video.full_path}\" -an -dframes 1 -vframes 1 -vcodec #{format} -f rawvideo \"#{image_path}\""
-    end
-
-    def available_formats
-      # Ordered by priority
-      image_formats = ['png', 'tiff', 'bmp', 'mjpeg']
-      formats = []
-
-      list = @ffprobe.execute "-codecs"
-      list.lines.drop(HEADER).each do |codec|
-        name, e, v = format_split(codec)
-        formats << name if image_formats.include?(name) && e && v
-      end
-
-      image_formats.select{ |format| formats.include?(format) }.map(&:to_sym)
-    end
-
-    def to_s
-      "FFmpeg #{@version}"
-    end
-
-private
-    def format_split line
-      e = line[ENCODING_SUPPORT] == 'E'
-      v = line[VIDEO_CODEC] == 'V'
-
-      name = line[NAME..-1].split(' ', 2).first
-      return name, e, v
-    rescue
-      return nil, false, false
-    end
-
-    def check_cache
-      unless @cache
-        @cache = @ffprobe.execute("\"#{@video.full_path}\"  -show_format -show_streams", "2>&1")
-      end
-    end
-
-    def parse_format
-      @cache.scan(/\[FORMAT\](.*?)\[\/FORMAT\]/m) do |format|
-        @info = FFmpegMetaInfo.new(get_hash(format[0]))
-        return true
-      end
-      false
-    end
-
-    def parse_audio_streams
-      @audio_streams = []
-      @cache.scan(/\[STREAM\](.*?)\[\/STREAM\]/m) do |stream|
-        info = get_hash(stream[0])
-        if info['codec_type'] == 'audio'
-          @audio_streams << FFmpegAudioStream.new(info)
-        end
-      end
-      true
-    end
-
-    def parse_video_streams
-      @video_streams = []
-      @cache.scan(/\[STREAM\](.*?)\[\/STREAM\]/m) do |stream|
-        info = get_hash(stream[0])
-        if info['codec_type'] == 'video'
-          @video_streams << FFmpegVideoStream.new(info)
-        end
-      end
-      true
-    end
-  end
-end
+#
+# FFmpeg Abstraction
+#
+
+require 'capturer'
+require 'command'
+
+module VCSRuby
+  class FFmpeg < Capturer
+
+    HEADER = 10
+    ENCODING_SUPPORT = 2
+    VIDEO_CODEC = 3
+    NAME = 8
+
+    attr_reader :info, :video_streams, :audio_streams
+
+    def initialize video
+      @video = video
+      @ffmpeg = Command.new :ffmpeg, 'ffmpeg'
+      @ffprobe = Command.new :ffmpeg, 'ffprobe'
+
+      detect_version if available?
+    end
+
+    def file_valid?
+      return probe_meta_information
+    end
+
+    def name
+      :ffmpeg
+    end
+
+    def available?
+      @ffmpeg.available? && @ffprobe.available? && !libav?
+    end
+
+    def libav?
+      @libav
+    end
+
+    def detect_version
+      info = @ffmpeg.execute('-version')
+      match = /avconv ([\d|.|-|:]*)/.match(info)
+      @libav = !!match
+      match = /ffmpeg version ([\d|.]*)/.match(info)
+      if match
+        @version = match[1]
+      end
+    end
+
+    def grab time, image_path
+      @ffmpeg.execute "-y -ss #{time.total_seconds} -i \"#{@video.full_path}\" -an -dframes 1 -vframes 1 -vcodec #{format} -f rawvideo \"#{image_path}\""
+    end
+
+    def available_formats
+      # Ordered by priority
+      image_formats = ['png', 'tiff', 'bmp', 'mjpeg']
+      formats = []
+
+      list = @ffprobe.execute "-codecs"
+      list.lines.drop(HEADER).each do |codec|
+        name, e, v = format_split(codec)
+        formats << name if image_formats.include?(name) && e && v
+      end
+
+      image_formats.select{ |format| formats.include?(format) }.map(&:to_sym)
+    end
+
+    def to_s
+      "FFmpeg #{@version}"
+    end
+
+private
+    def format_split line
+      e = line[ENCODING_SUPPORT] == 'E'
+      v = line[VIDEO_CODEC] == 'V'
+
+      name = line[NAME..-1].split(' ', 2).first
+      return name, e, v
+    rescue
+      return nil, false, false
+    end
+
+    def check_cache
+      unless @cache
+        @cache = @ffprobe.execute("\"#{@video.full_path}\"  -show_format -show_streams", "2>&1")
+      end
+    end
+
+    def parse_format
+      @cache.scan(/\[FORMAT\](.*?)\[\/FORMAT\]/m) do |format|
+        @info = FFmpegMetaInfo.new(get_hash(format[0]))
+        return true
+      end
+      false
+    end
+
+    def parse_audio_streams
+      @audio_streams = []
+      @cache.scan(/\[STREAM\](.*?)\[\/STREAM\]/m) do |stream|
+        info = get_hash(stream[0])
+        if info['codec_type'] == 'audio'
+          @audio_streams << FFmpegAudioStream.new(info)
+        end
+      end
+      true
+    end
+
+    def parse_video_streams
+      @video_streams = []
+      @cache.scan(/\[STREAM\](.*?)\[\/STREAM\]/m) do |stream|
+        info = get_hash(stream[0])
+        if info['codec_type'] == 'video'
+          @video_streams << FFmpegVideoStream.new(info)
+        end
+      end
+      true
+    end
+  end
+end