Chromecast: Add stream id interface in DecoderBufferBase class

chromecast/media/cma/pipeline/decrypt_util.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chromecast/media/cma/pipeline/decrypt_util.h"
 
 #include <openssl/aes.h>
 #include <string>
 
 #include "base/logging.h"
 #include "chromecast/media/cma/base/decoder_buffer_base.h"
 #include "crypto/symmetric_key.h"
 #include "media/base/decrypt_config.h"
 
 namespace chromecast {
 namespace media {
 
 namespace {
 
 class DecoderBufferClear : public DecoderBufferBase {
  public:
   explicit DecoderBufferClear(const scoped_refptr<DecoderBufferBase>& buffer);
 
   // DecoderBufferBase implementation.
+  StreamId stream_id() const override;
   base::TimeDelta timestamp() const override;
   const uint8* data() const override;
   uint8* writable_data() const override;
   size_t data_size() const override;
   const ::media::DecryptConfig* decrypt_config() const override;
   bool end_of_stream() const override;
 
  private:
   ~DecoderBufferClear() override;
 
   scoped_refptr<DecoderBufferBase> const buffer_;
 
   DISALLOW_COPY_AND_ASSIGN(DecoderBufferClear);
 };
 
 DecoderBufferClear::DecoderBufferClear(
     const scoped_refptr<DecoderBufferBase>& buffer)
     : buffer_(buffer) {
 }
 
 DecoderBufferClear::~DecoderBufferClear() {
 }
 
+StreamId DecoderBufferClear::stream_id() const {
+  return buffer_->stream_id();
+}
+
 base::TimeDelta DecoderBufferClear::timestamp() const {
   return buffer_->timestamp();
 }
 
 const uint8* DecoderBufferClear::data() const {
   return buffer_->data();
 }
 
 uint8* DecoderBufferClear::writable_data() const {
   return buffer_->writable_data();
@@ skipping 61 matching lines @@
         data + offset, data + offset, cypher_bytes, &aes_key,
         aes_iv, ecount_buf, &encrypted_byte_offset);
     offset += cypher_bytes;
   }
 
   return scoped_refptr<DecoderBufferBase>(new DecoderBufferClear(buffer));
 }
 
 }  // namespace media
 }  // namespace chromecast