Load CMA backend from shared library

chromecast/media/cma/base/decoder_buffer_adapter.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/base/decoder_buffer_adapter.h"
 
+#include "chromecast/base/time_conversions.h"
+#include "chromecast/media/cma/base/decrypt_config_impl.h"
+#include "chromecast/public/media/decrypt_config.h"
 #include "media/base/decoder_buffer.h"
 
 namespace chromecast {
 namespace media {
 
 DecoderBufferAdapter::DecoderBufferAdapter(
     const scoped_refptr<::media::DecoderBuffer>& buffer)
     : DecoderBufferAdapter(kPrimary, buffer) {
 }
 
 DecoderBufferAdapter::DecoderBufferAdapter(
     StreamId stream_id, const scoped_refptr<::media::DecoderBuffer>& buffer)
     : stream_id_(stream_id),
       buffer_(buffer) {
 }
 
 DecoderBufferAdapter::~DecoderBufferAdapter() {
 }
 
 StreamId DecoderBufferAdapter::stream_id() const {
   return stream_id_;
 }
 
-base::TimeDelta DecoderBufferAdapter::timestamp() const {
-  return buffer_->timestamp();
+TimeDelta DecoderBufferAdapter::timestamp() const {
+  return FromBaseTimeDelta(buffer_->timestamp());
 }
 
-void DecoderBufferAdapter::set_timestamp(const base::TimeDelta& timestamp) {
-  buffer_->set_timestamp(timestamp);
+void DecoderBufferAdapter::set_timestamp(TimeDelta timestamp) {
+  buffer_->set_timestamp(ToBaseTimeDelta(timestamp));
 }
 
 const uint8* DecoderBufferAdapter::data() const {
   return buffer_->data();
 }
 
 uint8* DecoderBufferAdapter::writable_data() const {
   return buffer_->writable_data();
 }
 
 size_t DecoderBufferAdapter::data_size() const {
   return buffer_->data_size();
 }
 
-const ::media::DecryptConfig* DecoderBufferAdapter::decrypt_config() const {
-  return buffer_->decrypt_config();
+const DecryptConfig* DecoderBufferAdapter::decrypt_config() const {
+  if (buffer_->decrypt_config() && !decrypt_config_) {
+    const ::media::DecryptConfig* config = buffer_->decrypt_config();

[servolk, 2015/07/27 21:25:47]

Nit: this conversion code should probably be in DecryptConfigImpl instead of
inlined here. I.e. I'd introduce something like
DecryptConfigImpl::CreateFromDecryptConfig.

[halliwell, 2015/07/28 02:19:35]

Indeed.  Originally I was trying to not have DecryptConfigImpl and put
everything in public headers, but it was too much inlining for Chromium rules :)
 Moved into DecryptConfigImpl now.

+    std::vector<SubsampleEntry> subsamples;
+    for (const auto& sample : config->subsamples()) {
+      subsamples.push_back(
+          SubsampleEntry(sample.clear_bytes, sample.cypher_bytes));
+    }
+    decrypt_config_.reset(
+        new DecryptConfigImpl(config->key_id(), config->iv(), subsamples));
+  }
+
+  return decrypt_config_.get();
 }
 
 bool DecoderBufferAdapter::end_of_stream() const {
   return buffer_->end_of_stream();
 }
 
 }  // namespace media
 }  // namespace chromecast