// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

module media.mojom;

import "media/mojo/mojom/media_types.mojom";
import "ui/gfx/geometry/mojom/geometry.mojom";

[EnableIf=allow_oop_video_decoder]
enum DecryptStatus {
  kSuccess,
  kNoKey,
  kFailure,
};

[EnableIf=allow_oop_video_decoder]
enum CdmContextEvent {
  kHasAdditionalUsableKey,
  kHardwareContextReset,
};

// Interface for handling callbacks from the CdmContextForOOPVD interface below.
[EnableIf=allow_oop_video_decoder]
interface CdmContextEventCallback {
  // Sends the event back to the registrar.
  EventCallback(CdmContextEvent event);
};

// Maps to the media::CdmContext interface for remoting it to another process.
[EnableIf=allow_oop_video_decoder]
interface CdmContextForOOPVD {
  // Proxies to media::CdmContext::GetChromeOsCdmContext()->GetHwKeyData.
  GetHwKeyData(DecryptConfig decrypt_config, array<uint8> hw_identifier) =>
      (DecryptStatus status, array<uint8> key_data);

  // Registers an interface for receiving event callbacks. This maps to
  // media::CdmContext::RegisterEventCB.
  RegisterEventCallback(pending_remote<CdmContextEventCallback> callback);

  // Proxies to media::CdmContext::GetChromeOsCdmContext()->GetHwConfigData.
  GetHwConfigData() => (bool success, array<uint8> config_data);

  // Proxies to media::CdmContext::GetChromeOsCdmContext()->
  // GetScreenResolutions.
  GetScreenResolutions() => (array<gfx.mojom.Size> resolutions);

  // Proxies to
  // media::CdmContext::GetChromeOsCdmContext()->AllocateSecureBuffer.
  AllocateSecureBuffer(uint32 size) => (handle<platform>? secure_buffer);

  // Proxies to
  // media::CdmContext::GetChromeOsCdmContext()->ParseEncryptedSliceHeader.
  ParseEncryptedSliceHeader(uint64 secure_handle, uint32 offset,
                              array<uint8> stream_data)
      => (bool success, array<uint8> slice_header);

  // Proxies to
  // media::CdmContext::GetDecryptor()->Decrypt for video data.
  DecryptVideoBuffer(DecoderBuffer buffer, array<uint8> bytes)
      => (DecryptStatus status, DecoderBuffer? decoder_buffer,
          array<uint8> bytes);
};