blob: d523db881621fc3e0fde3c1336f4346158b646e0 [file] [log] [blame]
// Copyright 2015 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 <string>
#include <vector>
#include "chromecast_export.h"
namespace chromecast {
namespace media {
class MediaPipelineBackend;
struct MediaPipelineDeviceParams;
class VideoPlane;
// Provides access to platform-specific media systems and hardware resources.
// In cast_shell, all usage is from the browser process. An implementation is
// assumed to be in an uninitialized state initially. When uninitialized, no
// API calls will be made except for Initialize, which brings the implementation
// into an initialized state. A call to Finalize returns the implementation to
// its uninitialized state. The implementation must support multiple
// transitions between these states, to support resource grant/revoke events and
// also to allow multiple unit tests to bring up the media systems in isolation
// from other tests.
class CHROMECAST_EXPORT CastMediaShlib {
// Initializes platform-specific media systems. Only called when in an
// uninitialized state.
static void Initialize(const std::vector<std::string>& argv);
// Tears down platform-specific media systems and returns to the uninitialized
// state. The implementation must release all media-related hardware
// resources.
static void Finalize();
// Gets the VideoPlane instance for managing the hardware video plane.
// While an implementation is in an initialized state, this function may be
// called at any time. The VideoPlane object must be destroyed in Finalize.
static VideoPlane* GetVideoPlane();
// Creates a factory object for a media pipeline backend. Called in the
// browser process, any number of times (once per media pipeline). Each call
// must instantiate a new factory object
static MediaPipelineBackend* CreateMediaPipelineBackend(
const MediaPipelineDeviceParams& params);
} // namespace media
} // namespace chromecast