11320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Copyright 2014 The Chromium Authors. All rights reserved. 21320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// Use of this source code is governed by a BSD-style license that can be 31320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// found in the LICENSE file. 41320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 51320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "chromecast/media/cma/ipc_streamer/decrypt_config_marshaller.h" 61320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 71320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "base/logging.h" 81320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "chromecast/media/cma/ipc/media_message.h" 91320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci#include "media/base/decrypt_config.h" 101320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 111320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccinamespace chromecast { 121320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccinamespace media { 131320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 141320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccinamespace { 151320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciconst size_t kMaxKeyIdSize = 256; 161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciconst size_t kMaxIvSize = 256; 171320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciconst size_t kMaxSubsampleCount = 1024; 181320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} 191320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 201320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// static 211320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tuccivoid DecryptConfigMarshaller::Write( 221320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci const ::media::DecryptConfig& config, MediaMessage* msg) { 231320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(config.key_id().size(), 0); 241320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(config.iv().size(), 0); 251320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(config.subsamples().size(), 0); 261320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 271320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WritePod(config.key_id().size())); 281320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WriteBuffer(config.key_id().data(), config.key_id().size())); 291320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WritePod(config.iv().size())); 301320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WriteBuffer(config.iv().data(), config.iv().size())); 311320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WritePod(config.subsamples().size())); 321320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci for (size_t k = 0; k < config.subsamples().size(); k++) { 331320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WritePod(config.subsamples()[k].clear_bytes)); 341320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->WritePod(config.subsamples()[k].cypher_bytes)); 351320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 361320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} 371320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 381320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci// static 391320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucciscoped_ptr< ::media::DecryptConfig> DecryptConfigMarshaller::Read( 401320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci MediaMessage* msg) { 411320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci size_t key_id_size = 0; 421320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadPod(&key_id_size)); 431320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(key_id_size, 0); 441320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_LT(key_id_size, kMaxKeyIdSize); 451320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci scoped_ptr<char[]> key_id(new char[key_id_size]); 461320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadBuffer(key_id.get(), key_id_size)); 471320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 481320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci size_t iv_size = 0; 491320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadPod(&iv_size)); 501320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(iv_size, 0); 511320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_LT(iv_size, kMaxIvSize); 521320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci scoped_ptr<char[]> iv(new char[iv_size]); 531320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadBuffer(iv.get(), iv_size)); 541320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 551320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci size_t subsample_count = 0; 561320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadPod(&subsample_count)); 571320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_GT(subsample_count, 0); 581320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK_LT(subsample_count, kMaxSubsampleCount); 591320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci std::vector< ::media::SubsampleEntry> subsamples(subsample_count); 601320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci for (size_t k = 0; k < subsample_count; k++) { 611320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci subsamples[k].clear_bytes = 0; 621320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci subsamples[k].cypher_bytes = 0; 631320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadPod(&subsamples[k].clear_bytes)); 641320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci CHECK(msg->ReadPod(&subsamples[k].cypher_bytes)); 651320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci } 661320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 671320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci return scoped_ptr< ::media::DecryptConfig>( 681320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci new ::media::DecryptConfig( 691320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci std::string(key_id.get(), key_id_size), 701320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci std::string(iv.get(), iv_size), 711320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci subsamples)); 721320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} 731320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci 741320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} // namespace media 751320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci} // namespace chromecast 76