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
|
/*
* Copyright (C) 2024 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "MediaResourceSniffer.h"
#if ENABLE(VIDEO)
#include "MIMESniffer.h"
#include "ResourceRequest.h"
#include <limits.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/text/MakeString.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(MediaResourceSniffer);
Ref<MediaResourceSniffer> MediaResourceSniffer::create(PlatformMediaResourceLoader& loader, ResourceRequest&& request, std::optional<size_t> maxSize)
{
if (maxSize)
request.addHTTPHeaderField(HTTPHeaderName::Range, makeString("bytes="_s, 0, '-', *maxSize));
auto resource = loader.requestResource(WTFMove(request), PlatformMediaResourceLoader::LoadOption::DisallowCaching);
if (!resource)
return adoptRef(*new MediaResourceSniffer());
Ref sniffer = adoptRef(*new MediaResourceSniffer(*resource , maxSize.value_or(SIZE_MAX)));
resource->setClient(sniffer.copyRef());
return sniffer;
}
MediaResourceSniffer::MediaResourceSniffer()
: m_maxSize(0)
{
m_producer.reject(PlatformMediaError::NetworkError);
}
MediaResourceSniffer::MediaResourceSniffer(Ref<PlatformMediaResource>&& resource, size_t maxSize)
: m_resource(WTFMove(resource))
, m_maxSize(maxSize)
{
}
MediaResourceSniffer::~MediaResourceSniffer()
{
cancel();
}
void MediaResourceSniffer::cancel()
{
if (auto resource = std::exchange(m_resource, { }))
resource->shutdown();
if (!m_producer.isSettled())
m_producer.reject(PlatformMediaError::Cancelled);
m_content.reset();
}
MediaResourceSniffer::Promise& MediaResourceSniffer::promise() const
{
return m_producer.promise().get();
}
void MediaResourceSniffer::dataReceived(PlatformMediaResource&, const SharedBuffer& buffer)
{
m_received += buffer.size();
m_content.append(buffer);
auto contiguousBuffer = m_content.get()->makeContiguous();
auto mimeType = MIMESniffer::getMIMETypeFromContent(contiguousBuffer->span());
if (mimeType.isEmpty() && m_received < m_maxSize)
return;
if (!m_producer.isSettled())
m_producer.resolve(ContentType { WTFMove(mimeType) });
cancel();
}
void MediaResourceSniffer::loadFailed(PlatformMediaResource&, const ResourceError&)
{
if (!m_producer.isSettled())
m_producer.reject(PlatformMediaError::NetworkError);
cancel();
}
void MediaResourceSniffer::loadFinished(PlatformMediaResource&, const NetworkLoadMetrics&)
{
if (m_producer.isSettled())
return;
Ref contiguousBuffer = m_content.takeAsContiguous();
auto mimeType = MIMESniffer::getMIMETypeFromContent(contiguousBuffer->span());
m_producer.resolve(ContentType { WTFMove(mimeType) });
cancel();
}
} // namespace WebCore
#endif // ENABLE(VIDEO)
|
