components/cdm/renderer/android_key_systems.cc

   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 #include "components/cdm/renderer/android_key_systems.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/logging.h"
  11 #include "components/cdm/common/cdm_messages_android.h"
  12 #include "components/cdm/renderer/widevine_key_systems.h"
  13 #include "content/public/renderer/render_thread.h"
  14
  15 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
  16
  17 using content::KeySystemInfo;
  18 using content::SupportedCodecs;
  19
  20 namespace cdm {
  21
  22 static SupportedKeySystemResponse QueryKeySystemSupport(
  23     const std::string& key_system) {
  24   SupportedKeySystemRequest request;
  25   SupportedKeySystemResponse response;
  26
  27   request.key_system = key_system;
  28   request.codecs = content::EME_CODEC_ALL;
  29   content::RenderThread::Get()->Send(
  30       new ChromeViewHostMsg_QueryKeySystemSupport(request, &response));
  31   DCHECK(!(response.compositing_codecs & ~content::EME_CODEC_ALL))
  32       << "unrecognized codec";
  33   DCHECK(!(response.non_compositing_codecs & ~content::EME_CODEC_ALL))
  34       << "unrecognized codec";
  35   return response;
  36 }
  37
  38 void AddAndroidWidevine(std::vector<KeySystemInfo>* concrete_key_systems) {
  39   SupportedKeySystemResponse response = QueryKeySystemSupport(
  40       kWidevineKeySystem);
  41   if (response.compositing_codecs != content::EME_CODEC_NONE) {
  42     AddWidevineWithCodecs(
  43         WIDEVINE,
  44         static_cast<SupportedCodecs>(response.compositing_codecs),
  45         concrete_key_systems);
  46   }
  47
  48   if (response.non_compositing_codecs != content::EME_CODEC_NONE) {
  49     AddWidevineWithCodecs(
  50         WIDEVINE_HR_NON_COMPOSITING,
  51         static_cast<SupportedCodecs>(response.non_compositing_codecs),
  52         concrete_key_systems);
  53   }
  54 }
  55
  56 void AddAndroidPlatformKeySystems(
  57     std::vector<KeySystemInfo>* concrete_key_systems) {
  58   std::vector<std::string> key_system_names;
  59   content::RenderThread::Get()->Send(
  60       new ChromeViewHostMsg_GetPlatformKeySystemNames(&key_system_names));
  61
  62   for (std::vector<std::string>::const_iterator it = key_system_names.begin();
  63        it != key_system_names.end(); ++it) {
  64     SupportedKeySystemResponse response = QueryKeySystemSupport(*it);
  65     if (response.compositing_codecs != content::EME_CODEC_NONE) {
  66       KeySystemInfo info(*it);
  67       info.supported_codecs = response.compositing_codecs;
  68       concrete_key_systems->push_back(info);
  69     }
  70   }
  71 }
  72
  73 }  // namespace cdm