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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
|
// Copyright (c) 2006-2008 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 "media/base/media_format.h"
namespace media {
namespace mime_type {
// Represents a URL, typically used to create a DataSourceInterface.
// Expected keys:
// kURL String The URL
const char kURL[] = "text/x-url";
// Represents a generic byte stream, typically from a DataSourceInterface.
// Expected keys:
// None
const char kApplicationOctetStream[] = "application/octet-stream";
// Represents encoded audio data, typically from an DemuxerStreamInterface.
// Expected keys:
// None
const char kMPEGAudio[] = "audio/mpeg";
const char kAACAudio[] = "audio/aac";
// Represents encoded video data, typically from a DemuxerStreamInterface.
// Expected keys:
// None
const char kH264AnnexB[] = "video/x-h264-annex-b";
// Represents decoded audio data, typically from an AudioDecoderInterface.
// Expected keys:
// kChannels Integer Number of audio channels
// kSampleRate Integer Audio sample rate (i.e., 44100)
// kSampleBits Integer Audio bits-per-sample (i.e., 16)
const char kUncompressedAudio[] = "audio/x-uncompressed";
// Represents decoded video data, typically from a VideoDecoderInterface.
// Other information, such as surface format (i.e., YV12), stride and planes are
// included with the buffer itself and is not part of the MediaFormat.
// Expected keys:
// kWidth Integer Display width of the surface
// kHeight Integer Display height of the surface
const char kUncompressedVideo[] = "video/x-uncompressed";
// Major types of media types begin with the prefix "audio/" or "video/".
const char kMajorTypeVideo[] = "video/";
const char kMajorTypeAudio[] = "audio/";
} // namespace mime_type
// Common keys.
const char MediaFormat::kMimeType[] = "MimeType";
const char MediaFormat::kURL[] = "URL";
const char MediaFormat::kSurfaceFormat[] = "SurfaceFormat";
const char MediaFormat::kSampleRate[] = "SampleRate";
const char MediaFormat::kSampleBits[] = "SampleBits";
const char MediaFormat::kChannels[] = "Channels";
const char MediaFormat::kWidth[] = "Width";
const char MediaFormat::kHeight[] = "Height";
MediaFormat::MediaFormat() {
}
MediaFormat::~MediaFormat() {
Clear();
}
bool MediaFormat::Contains(const std::string& key) const {
return value_map_.find(key) != value_map_.end();
}
void MediaFormat::Clear() {
for (ValueMap::iterator iter(value_map_.begin());
iter != value_map_.end(); ++iter)
delete iter->second;
value_map_.clear();
}
void MediaFormat::SetAsBoolean(const std::string& key, bool in_value) {
value_map_[key] = Value::CreateBooleanValue(in_value);
}
void MediaFormat::SetAsInteger(const std::string& key, int in_value) {
value_map_[key] = Value::CreateIntegerValue(in_value);
}
void MediaFormat::SetAsReal(const std::string& key, double in_value) {
value_map_[key] = Value::CreateRealValue(in_value);
}
void MediaFormat::SetAsString(const std::string& key,
const std::string& in_value) {
value_map_[key] = Value::CreateStringValue(in_value);
}
bool MediaFormat::GetAsBoolean(const std::string& key, bool* out_value) const {
Value* value = GetValue(key);
return value != NULL && value->GetAsBoolean(out_value);
}
bool MediaFormat::GetAsInteger(const std::string& key, int* out_value) const {
Value* value = GetValue(key);
return value != NULL && value->GetAsInteger(out_value);
}
bool MediaFormat::GetAsReal(const std::string& key, double* out_value) const {
Value* value = GetValue(key);
return value != NULL && value->GetAsReal(out_value);
}
bool MediaFormat::GetAsString(const std::string& key,
std::string* out_value) const {
Value* value = GetValue(key);
return value != NULL && value->GetAsString(out_value);
}
Value* MediaFormat::GetValue(const std::string& key) const {
ValueMap::const_iterator value_iter = value_map_.find(key);
return (value_iter == value_map_.end()) ? NULL : value_iter->second;
}
} // namespace media
|
