EncoderZlib/DecoderZlib for chromoting

remoting/base/compressor.h

Index: remoting/base/compressor.h
diff --git a/remoting/base/compressor.h b/remoting/base/compressor.h
index fd4c4122d892f1e5018f2152395bced605be086e..edb64f842b95a268ba3774f8d3c4ad5e72972af5 100644
--- a/remoting/base/compressor.h
+++ b/remoting/base/compressor.h
@@ -16,6 +16,13 @@ namespace remoting {
 // lifetime. This object should be destroyed after use.
 class Compressor {
  public:
+
+  // Defines the flush modes for a compressor.
+  enum CompressorFlush {
+    CompressorNoFlush,
+    CompressorSyncFlush,
+    CompressorFinish,
+  };
   virtual ~Compressor() {}
 
   // Compress |input_data| with |input_size| bytes.
@@ -23,7 +30,14 @@ class Compressor {
   // |output_data| is provided by the caller and |output_size| is the
   // size of |output_data|. |output_size| must be greater than 0.
   //
-  // |input_size| is set to 0 to indicate the end of input stream.
+  // |flush| is set to one of the three value:
+  // - CompressorNoFlush
+  //   No flushing is requested
+  // - CompressorSyncFlush
+  //   Write all pending output and write a synchronization point in the
+  //   output data stream.
+  // - CompressorFinish
+  //   Mark the end of stream.
   //
   // Compressed data is written to |output_data|. |consumed| will
   // contain the number of bytes consumed from the input. |written|
@@ -34,7 +48,7 @@ class Compressor {
   // useful for end of the compression stream.
   virtual bool Process(const uint8* input_data, int input_size,
                        uint8* output_data, int output_size,
-                       int* consumed, int* written) = 0;
+                       CompressorFlush flush, int* consumed, int* written) = 0;
 };
 
 }  // namespace remoting