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
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
|
// Copyright (c) 2010 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 "base/message_loop.h"
#include "base/process_util.h"
#include "media/base/filter_host.h"
#include "net/base/load_flags.h"
#include "net/base/data_url.h"
#include "net/http/http_response_headers.h"
#include "net/url_request/url_request_status.h"
#include "webkit/glue/media/simple_data_source.h"
#include "webkit/glue/resource_loader_bridge.h"
#include "webkit/glue/webkit_glue.h"
namespace {
const char kHttpScheme[] = "http";
const char kHttpsScheme[] = "https";
const char kDataScheme[] = "data";
// A helper method that accepts only HTTP, HTTPS and FILE protocol.
bool IsDataProtocol(const GURL& url) {
return url.SchemeIs(kDataScheme);
}
} // namespace
namespace webkit_glue {
bool SimpleDataSource::IsMediaFormatSupported(
const media::MediaFormat& media_format) {
std::string mime_type;
std::string url;
if (media_format.GetAsString(media::MediaFormat::kMimeType, &mime_type) &&
media_format.GetAsString(media::MediaFormat::kURL, &url)) {
GURL gurl(url);
if (IsProtocolSupportedForMedia(gurl))
return true;
}
return false;
}
SimpleDataSource::SimpleDataSource(
MessageLoop* render_loop,
webkit_glue::MediaResourceLoaderBridgeFactory* bridge_factory)
: render_loop_(render_loop),
bridge_factory_(bridge_factory),
size_(-1),
state_(UNINITIALIZED) {
DCHECK(render_loop);
}
SimpleDataSource::~SimpleDataSource() {
AutoLock auto_lock(lock_);
DCHECK(state_ == UNINITIALIZED || state_ == STOPPED);
}
void SimpleDataSource::Stop(media::FilterCallback* callback) {
AutoLock auto_lock(lock_);
state_ = STOPPED;
if (callback) {
callback->Run();
delete callback;
}
// Post a task to the render thread to cancel loading the resource.
render_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this, &SimpleDataSource::CancelTask));
}
void SimpleDataSource::Initialize(const std::string& url,
media::FilterCallback* callback) {
AutoLock auto_lock(lock_);
DCHECK_EQ(state_, UNINITIALIZED);
DCHECK(callback);
state_ = INITIALIZING;
initialize_callback_.reset(callback);
// Validate the URL.
SetURL(GURL(url));
if (!url_.is_valid() || !IsProtocolSupportedForMedia(url_)) {
host()->SetError(media::PIPELINE_ERROR_NETWORK);
initialize_callback_->Run();
initialize_callback_.reset();
return;
}
// Post a task to the render thread to start loading the resource.
render_loop_->PostTask(FROM_HERE,
NewRunnableMethod(this, &SimpleDataSource::StartTask));
}
const media::MediaFormat& SimpleDataSource::media_format() {
return media_format_;
}
void SimpleDataSource::Read(int64 position,
size_t size,
uint8* data,
ReadCallback* read_callback) {
DCHECK_GE(size_, 0);
if (position >= size_) {
read_callback->RunWithParams(Tuple1<size_t>(0));
delete read_callback;
} else {
size_t copied = std::min(size, static_cast<size_t>(size_ - position));
memcpy(data, data_.c_str() + position, copied);
read_callback->RunWithParams(Tuple1<size_t>(copied));
delete read_callback;
}
}
bool SimpleDataSource::GetSize(int64* size_out) {
*size_out = size_;
return true;
}
bool SimpleDataSource::IsStreaming() {
return false;
}
bool SimpleDataSource::OnReceivedRedirect(
const GURL& new_url,
const webkit_glue::ResourceResponseInfo& info,
bool* has_new_first_party_for_cookies,
GURL* new_first_party_for_cookies) {
SetURL(new_url);
// TODO(wtc): should we return a new first party for cookies URL?
*has_new_first_party_for_cookies = false;
return true;
}
void SimpleDataSource::OnReceivedResponse(
const webkit_glue::ResourceResponseInfo& info,
bool content_filtered) {
size_ = info.content_length;
}
void SimpleDataSource::OnReceivedData(const char* data, int len) {
data_.append(data, len);
}
void SimpleDataSource::OnCompletedRequest(const URLRequestStatus& status,
const std::string& security_info,
const base::Time& completion_time) {
AutoLock auto_lock(lock_);
// It's possible this gets called after Stop(), in which case |host_| is no
// longer valid.
if (state_ == STOPPED) {
return;
}
// Otherwise we should be initializing and have created a bridge.
DCHECK_EQ(state_, INITIALIZING);
DCHECK(bridge_.get());
bridge_.reset();
// If we don't get a content length or the request has failed, report it
// as a network error.
DCHECK(size_ == -1 || static_cast<size_t>(size_) == data_.length());
if (size_ == -1) {
size_ = data_.length();
}
DoneInitialization_Locked(status.is_success());
}
GURL SimpleDataSource::GetURLForDebugging() const {
return url_;
}
void SimpleDataSource::SetURL(const GURL& url) {
url_ = url;
media_format_.Clear();
media_format_.SetAsString(media::MediaFormat::kMimeType,
media::mime_type::kApplicationOctetStream);
media_format_.SetAsString(media::MediaFormat::kURL, url.spec());
}
void SimpleDataSource::StartTask() {
AutoLock auto_lock(lock_);
DCHECK(MessageLoop::current() == render_loop_);
// We may have stopped.
if (state_ == STOPPED)
return;
DCHECK_EQ(state_, INITIALIZING);
if (IsDataProtocol(url_)) {
// If this using data protocol, we just need to decode it.
std::string mime_type, charset;
bool success = net::DataURL::Parse(url_, &mime_type, &charset, &data_);
// Don't care about the mime-type just proceed if decoding was successful.
size_ = data_.length();
DoneInitialization_Locked(success);
} else {
// Create our bridge and start loading the resource.
bridge_.reset(bridge_factory_->CreateBridge(
url_, net::LOAD_BYPASS_CACHE, -1, -1));
bridge_->Start(this);
}
}
void SimpleDataSource::CancelTask() {
AutoLock auto_lock(lock_);
DCHECK_EQ(state_, STOPPED);
// Cancel any pending requests.
if (bridge_.get()) {
bridge_->Cancel();
bridge_.reset();
}
}
void SimpleDataSource::DoneInitialization_Locked(bool success) {
lock_.AssertAcquired();
if (success) {
state_ = INITIALIZED;
host()->SetTotalBytes(size_);
host()->SetBufferedBytes(size_);
// If scheme is file or data, say we are loaded.
host()->SetLoaded(url_.SchemeIsFile() || IsDataProtocol(url_));
} else {
host()->SetError(media::PIPELINE_ERROR_NETWORK);
}
initialize_callback_->Run();
initialize_callback_.reset();
}
} // namespace webkit_glue
|
