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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_DECODE_STATUS_H_
#define MEDIA_BASE_DECODE_STATUS_H_
#include <iosfwd>
#include "media/base/decoder_buffer.h"
#include "media/base/media_export.h"
#include "media/base/status_codes.h"
namespace media {
class Status;
// TODO(crbug.com/1129662): This is temporary, to allow DecodeStatus::OK to
// work, while we replace DecodeStatus with actual status codes.
using DecodeStatus = StatusCode;
MEDIA_EXPORT const char* GetDecodeStatusString(DecodeStatus status);
// Helper class for ensuring that Decode() traces are properly unique and closed
// if the Decode is aborted via a WeakPtr invalidation. We use the |this|
// pointer of the ScopedDecodeTrace object itself as the id. Since the callback
// owns the class it's guaranteed to be unique.
class MEDIA_EXPORT ScopedDecodeTrace {
public:
// Returns true if tracing is enabled for the media category. If false,
// clients should avoid creating ScopedDecodeTrace objects.
static bool IsEnabled();
// Begins an asynchronous trace with the given name and properties. Providing
// the DecoderBuffer itself yields the most information in the trace.
ScopedDecodeTrace(const char* trace_name, const DecoderBuffer& buffer);
ScopedDecodeTrace(const char* trace_name,
bool is_key_frame,
base::TimeDelta timestamp);
~ScopedDecodeTrace();
// Completes the Decode() trace with the given status.
void EndTrace(const Status& status);
private:
const char* trace_name_;
bool closed_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopedDecodeTrace);
};
} // namespace media
#endif // MEDIA_BASE_DECODE_STATUS_H_
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