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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "BaseMediaResource.h"
#include "ChannelMediaResource.h"
#include "CloneableWithRangeMediaResource.h"
#include "FileMediaResource.h"
#include "MediaContainerType.h"
#include "mozilla/dom/BlobImpl.h"
#include "mozilla/dom/BlobURLProtocolHandler.h"
#include "mozilla/dom/HTMLMediaElement.h"
#include "mozilla/InputStreamLengthHelper.h"
#include "nsDebug.h"
#include "nsError.h"
#include "nsICloneableInputStream.h"
#include "nsIFile.h"
#include "nsIFileChannel.h"
#include "nsIInputStream.h"
#include "nsNetUtil.h"
namespace mozilla {
already_AddRefed<BaseMediaResource> BaseMediaResource::Create(
MediaResourceCallback* aCallback, nsIChannel* aChannel,
bool aIsPrivateBrowsing) {
NS_ASSERTION(NS_IsMainThread(),
"MediaResource::Open called on non-main thread");
// If the channel was redirected, we want the post-redirect URI;
// but if the URI scheme was expanded, say from chrome: to jar:file:,
// we want the original URI.
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_GetFinalChannelURI(aChannel, getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, nullptr);
nsAutoCString contentTypeString;
aChannel->GetContentType(contentTypeString);
Maybe<MediaContainerType> containerType =
MakeMediaContainerType(contentTypeString);
if (!containerType) {
return nullptr;
}
// Let's try to create a FileMediaResource in case the channel is a nsIFile
nsCOMPtr<nsIFileChannel> fc = do_QueryInterface(aChannel);
if (fc) {
RefPtr<BaseMediaResource> resource =
new FileMediaResource(aCallback, aChannel, uri);
return resource.forget();
}
int64_t streamLength = -1;
RefPtr<mozilla::dom::BlobImpl> blobImpl;
if (dom::IsBlobURI(uri) &&
NS_SUCCEEDED(NS_GetBlobForBlobURI(uri, getter_AddRefs(blobImpl))) &&
blobImpl) {
IgnoredErrorResult rv;
nsCOMPtr<nsIInputStream> stream;
blobImpl->CreateInputStream(getter_AddRefs(stream), rv);
if (NS_WARN_IF(rv.Failed())) {
return nullptr;
}
// If this stream knows its own size synchronously, we can still use
// FileMediaResource. If the size is known, it means that the reading
// doesn't require any async operation. This is required because
// FileMediaResource doesn't work with nsIAsyncInputStreams.
int64_t length;
if (InputStreamLengthHelper::GetSyncLength(stream, &length) &&
length >= 0) {
RefPtr<BaseMediaResource> resource =
new FileMediaResource(aCallback, aChannel, uri, length);
return resource.forget();
}
// Also if the stream doesn't know its own size synchronously, we can still
// read the length from the blob.
uint64_t size = blobImpl->GetSize(rv);
if (NS_WARN_IF(rv.Failed())) {
return nullptr;
}
// Maybe this blob URL can be cloned with a range.
nsCOMPtr<nsICloneableInputStreamWithRange> cloneableWithRange =
do_QueryInterface(stream);
if (cloneableWithRange) {
RefPtr<BaseMediaResource> resource = new CloneableWithRangeMediaResource(
aCallback, aChannel, uri, stream, size);
return resource.forget();
}
// We know the size of the stream for blobURLs, let's use it.
streamLength = size;
}
RefPtr<BaseMediaResource> resource = new ChannelMediaResource(
aCallback, aChannel, uri, streamLength, aIsPrivateBrowsing);
return resource.forget();
}
void BaseMediaResource::SetLoadInBackground(bool aLoadInBackground) {
if (aLoadInBackground == mLoadInBackground) {
return;
}
mLoadInBackground = aLoadInBackground;
if (!mChannel) {
// No channel, resource is probably already loaded.
return;
}
MediaDecoderOwner* owner = mCallback->GetMediaOwner();
if (!owner) {
NS_WARNING("Null owner in MediaResource::SetLoadInBackground()");
return;
}
RefPtr<dom::HTMLMediaElement> element = owner->GetMediaElement();
if (!element) {
NS_WARNING("Null element in MediaResource::SetLoadInBackground()");
return;
}
bool isPending = false;
if (NS_SUCCEEDED(mChannel->IsPending(&isPending)) && isPending) {
nsLoadFlags loadFlags;
DebugOnly<nsresult> rv = mChannel->GetLoadFlags(&loadFlags);
NS_ASSERTION(NS_SUCCEEDED(rv), "GetLoadFlags() failed!");
if (aLoadInBackground) {
loadFlags |= nsIRequest::LOAD_BACKGROUND;
} else {
loadFlags &= ~nsIRequest::LOAD_BACKGROUND;
}
Unused << NS_WARN_IF(NS_FAILED(ModifyLoadFlags(loadFlags)));
}
}
nsresult BaseMediaResource::ModifyLoadFlags(nsLoadFlags aFlags) {
nsCOMPtr<nsILoadGroup> loadGroup;
nsresult rv = mChannel->GetLoadGroup(getter_AddRefs(loadGroup));
MOZ_ASSERT(NS_SUCCEEDED(rv), "GetLoadGroup() failed!");
bool inLoadGroup = false;
if (loadGroup) {
nsresult status;
mChannel->GetStatus(&status);
rv = loadGroup->RemoveRequest(mChannel, nullptr, status);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
inLoadGroup = true;
}
rv = mChannel->SetLoadFlags(aFlags);
MOZ_ASSERT(NS_SUCCEEDED(rv), "SetLoadFlags() failed!");
if (inLoadGroup) {
rv = loadGroup->AddRequest(mChannel, nullptr);
MOZ_ASSERT(NS_SUCCEEDED(rv), "AddRequest() failed!");
}
return NS_OK;
}
} // namespace mozilla
|
