tor-browser

The Tor Browser
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WMFDecryptedBlock.h (2207B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      4 
      5 #ifndef DOM_MEDIA_PLATFORM_WMF_CLEARKEY_WMFDECRYPTEDBLOCK_H
      6 #define DOM_MEDIA_PLATFORM_WMF_CLEARKEY_WMFDECRYPTEDBLOCK_H
      7 
      8 #include <vector>
      9 
     10 #include "WMFClearKeyUtils.h"
     11 #include "content_decryption_module.h"
     12 
     13 namespace mozilla {
     14 
     15 // This class is used to store the decrypted data. It will be allocated by
     16 // `SessionManagerWrapper::Allocate`.
     17 class WMFDecryptedBuffer : public cdm::Buffer {
     18 public:
     19  explicit WMFDecryptedBuffer(size_t aSize) {
     20    SetSize(aSize);
     21    LOG("WMFDecryptedBuffer ctor %p, sz=%u", this, Size());
     22  }
     23  ~WMFDecryptedBuffer() override {
     24    LOG("WMFDecryptedBuffer dtor %p, sz=%u", this, Size());
     25  }
     26  WMFDecryptedBuffer(const WMFDecryptedBuffer&) = delete;
     27  WMFDecryptedBuffer& operator=(const WMFDecryptedBuffer&) = delete;
     28 
     29  // This is not good, but that is how cdm::buffer works.
     30  void Destroy() override { delete this; }
     31  uint32_t Capacity() const override { return mBuffer.size(); }
     32  uint8_t* Data() override { return mBuffer.data(); }
     33  void SetSize(uint32_t aSize) override { return mBuffer.resize(aSize); }
     34  uint32_t Size() const override { return mBuffer.size(); }
     35 
     36 private:
     37  std::vector<uint8_t> mBuffer;
     38 };
     39 
     40 class WMFDecryptedBlock : public cdm::DecryptedBlock {
     41 public:
     42  WMFDecryptedBlock() : mBuffer(nullptr), mTimestamp(0) {
     43    LOG("WMFDecryptedBlock ctor %p", this);
     44  }
     45  ~WMFDecryptedBlock() override {
     46    LOG("WMFDecryptedBlock dtor %p", this);
     47    if (mBuffer) {
     48      mBuffer->Destroy();
     49      mBuffer = nullptr;
     50    }
     51  }
     52  void SetDecryptedBuffer(cdm::Buffer* aBuffer) override {
     53    LOG("WMFDecryptedBlock(%p)::SetDecryptedBuffer, buffer=%p", this, aBuffer);
     54    mBuffer = aBuffer;
     55  }
     56  cdm::Buffer* DecryptedBuffer() override { return mBuffer; }
     57  void SetTimestamp(int64_t aTimestamp) override { mTimestamp = aTimestamp; }
     58  int64_t Timestamp() const override { return mTimestamp; }
     59 
     60 private:
     61  cdm::Buffer* mBuffer;
     62  int64_t mTimestamp;
     63 };
     64 
     65 }  // namespace mozilla
     66 
     67 #endif  // DOM_MEDIA_PLATFORM_WMF_CLEARKEY_WMFDECRYPTEDBLOCK_H