chromecast/media/cma/pipeline/decrypt_util.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROMECAST_MEDIA_CMA_PIPELINE_DECRYPT_UTIL_H_
   6 #define CHROMECAST_MEDIA_CMA_PIPELINE_DECRYPT_UTIL_H_
   7
   8 #include "base/memory/ref_counted.h"
   9
  10 namespace crypto {
  11 class SymmetricKey;
  12 }
  13
  14 namespace chromecast {
  15 namespace media {
  16
  17 class DecoderBufferBase;
  18
  19 // Create a new buffer which corresponds to the clear version of |buffer|.
  20 // Note: the memory area corresponding to the ES data of the new buffer
  21 // is the same as the ES data of |buffer| (for efficiency).
  22 // After the function is called, |buffer| is left in a inconsistent state
  23 // in the sense it has some decryption info but the ES data is now in clear.
  24 scoped_refptr<DecoderBufferBase> DecryptDecoderBuffer(
  25     const scoped_refptr<DecoderBufferBase>& buffer,
  26     crypto::SymmetricKey* key);
  27
  28 }  // namespace media
  29 }  // namespace chromecast
  30
  31 #endif  // CHROMECAST_MEDIA_CMA_PIPELINE_DECRYPT_UTIL_H_