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- // Copyright 2016 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.
- #ifndef MEDIA_BASE_RENDERER_CLIENT_H_
- #define MEDIA_BASE_RENDERER_CLIENT_H_
- #include "media/base/audio_decoder_config.h"
- #include "media/base/buffering_state.h"
- #include "media/base/media_status.h"
- #include "media/base/pipeline_status.h"
- #include "media/base/video_decoder_config.h"
- #include "media/base/waiting.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- #include "ui/gfx/geometry/size.h"
- namespace media {
- // Interface used by Renderer, AudioRenderer, VideoRenderer and
- // MediaPlayerRenderer implementations to notify their clients.
- class MEDIA_EXPORT RendererClient {
- public:
- // Executed if any error was encountered after Renderer initialization.
- virtual void OnError(PipelineStatus status) = 0;
- // Executed if there is a non-fatal fallback that should be reported
- virtual void OnFallback(PipelineStatus status) = 0;
- // Executed when rendering has reached the end of stream.
- virtual void OnEnded() = 0;
- // Executed periodically with rendering statistics. Fields *_decoded*,
- // *_dropped and *memory_usage should be the delta since the last
- // OnStatisticsUpdate() call.
- virtual void OnStatisticsUpdate(const PipelineStatistics& stats) = 0;
- // Executed when buffering state is changed. |reason| indicates the cause of
- // the state change, when known.
- virtual void OnBufferingStateChange(BufferingState state,
- BufferingStateChangeReason reason) = 0;
- // Executed whenever the Renderer is waiting because of |reason|.
- virtual void OnWaiting(WaitingReason reason) = 0;
- // Executed whenever DemuxerStream status returns kConfigChange. Initial
- // configs provided by OnMetadata.
- virtual void OnAudioConfigChange(const AudioDecoderConfig& config) = 0;
- virtual void OnVideoConfigChange(const VideoDecoderConfig& config) = 0;
- // Executed for the first video frame and whenever natural size changes.
- // Only used if media stream contains a video track.
- virtual void OnVideoNaturalSizeChange(const gfx::Size& size) = 0;
- // Executed for the first video frame and whenever opacity changes.
- // Only used if media stream contains a video track.
- virtual void OnVideoOpacityChange(bool opaque) = 0;
- // Returns true if video stream is available in the media resource.
- // TODO(crbug.com/988535): Used by AudioRendererImpl. This can be removed
- // when the bug is resolved.
- virtual bool IsVideoStreamAvailable();
- // Called when the bucketed frames per second has changed. |fps| will be
- // unset if the frame rate is unstable. The duration used for the frame rate
- // is based on the wall clock time, not the media time.
- virtual void OnVideoFrameRateChange(absl::optional<int> fps) = 0;
- };
- } // namespace media
- #endif // MEDIA_BASE_RENDERER_CLIENT_H_
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