blob: 0271668c92e4400ef0cb2e7bf8035c456ca36fa0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
// 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"
namespace media {
enum class DecodeStatus {
OK = 0, // Everything went as planned.
ABORTED, // Read aborted due to Reset() during pending read.
DECODE_ERROR, // Decoder returned decode error. Note: Prefixed by DECODE_
// since ERROR is a reserved name (special macro) on Windows.
DECODE_STATUS_MAX = DECODE_ERROR
};
MEDIA_EXPORT const char* GetDecodeStatusString(DecodeStatus status);
// Helper function so that DecodeStatus can be printed easily.
MEDIA_EXPORT std::ostream& operator<<(std::ostream& os,
const 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(DecodeStatus status);
private:
const char* trace_name_;
bool closed_ = false;
DISALLOW_COPY_AND_ASSIGN(ScopedDecodeTrace);
};
} // namespace media
#endif // MEDIA_BASE_DECODE_STATUS_H_
|
