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
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "WVMExtractor"
#include <utils/Log.h>
#include "include/WVMExtractor.h"
#include <arpa/inet.h>
#include <utils/String8.h>
#include <media/stagefright/foundation/ADebug.h>
#include <media/stagefright/Utils.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/MediaSource.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/MediaErrors.h>
#include <media/stagefright/MediaBuffer.h>
#include <dlfcn.h>
#include <utils/Errors.h>
/* The extractor lifetime is short - just long enough to get
* the media sources constructed - so the shared lib needs to remain open
* beyond the lifetime of the extractor. So keep the handle as a global
* rather than a member of the extractor
*/
void *gVendorLibHandle = NULL;
namespace android {
static Mutex gWVMutex;
WVMExtractor::WVMExtractor(const sp<DataSource> &source)
: mDataSource(source)
{
Mutex::Autolock autoLock(gWVMutex);
if (!getVendorLibHandle()) {
return;
}
typedef WVMLoadableExtractor *(*GetInstanceFunc)(sp<DataSource>);
GetInstanceFunc getInstanceFunc =
(GetInstanceFunc) dlsym(gVendorLibHandle,
"_ZN7android11GetInstanceENS_2spINS_10DataSourceEEE");
if (getInstanceFunc) {
if (source->DrmInitialization(
MEDIA_MIMETYPE_CONTAINER_WVM) != NULL) {
mImpl = (*getInstanceFunc)(source);
CHECK(mImpl != NULL);
setDrmFlag(true);
} else {
ALOGE("Drm manager failed to initialize.");
}
} else {
ALOGE("Failed to locate GetInstance in libwvm.so");
}
}
static void init_routine()
{
gVendorLibHandle = dlopen("libwvm.so", RTLD_NOW);
if (gVendorLibHandle == NULL) {
ALOGE("Failed to open libwvm.so: %s", dlerror());
}
}
bool WVMExtractor::getVendorLibHandle()
{
static pthread_once_t sOnceControl = PTHREAD_ONCE_INIT;
pthread_once(&sOnceControl, init_routine);
return gVendorLibHandle != NULL;
}
WVMExtractor::~WVMExtractor() {
}
size_t WVMExtractor::countTracks() {
return (mImpl != NULL) ? mImpl->countTracks() : 0;
}
sp<MediaSource> WVMExtractor::getTrack(size_t index) {
if (mImpl == NULL) {
return NULL;
}
return mImpl->getTrack(index);
}
sp<MetaData> WVMExtractor::getTrackMetaData(size_t index, uint32_t flags) {
if (mImpl == NULL) {
return NULL;
}
return mImpl->getTrackMetaData(index, flags);
}
sp<MetaData> WVMExtractor::getMetaData() {
if (mImpl == NULL) {
return NULL;
}
return mImpl->getMetaData();
}
int64_t WVMExtractor::getCachedDurationUs(status_t *finalStatus) {
if (mImpl == NULL) {
return 0;
}
return mImpl->getCachedDurationUs(finalStatus);
}
status_t WVMExtractor::getEstimatedBandwidthKbps(int32_t *kbps) {
if (mImpl == NULL) {
return UNKNOWN_ERROR;
}
return mImpl->getEstimatedBandwidthKbps(kbps);
}
void WVMExtractor::setAdaptiveStreamingMode(bool adaptive) {
if (mImpl != NULL) {
mImpl->setAdaptiveStreamingMode(adaptive);
}
}
void WVMExtractor::setCryptoPluginMode(bool cryptoPluginMode) {
if (mImpl != NULL) {
mImpl->setCryptoPluginMode(cryptoPluginMode);
}
}
void WVMExtractor::setUID(uid_t uid) {
if (mImpl != NULL) {
mImpl->setUID(uid);
}
}
status_t WVMExtractor::getError() {
if (mImpl == NULL) {
return UNKNOWN_ERROR;
}
return mImpl->getError();
}
void WVMExtractor::setError(status_t err) {
if (mImpl != NULL) {
mImpl->setError(err);
}
}
bool SniffWVM(
const sp<DataSource> &source, String8 *mimeType, float *confidence,
sp<AMessage> *) {
Mutex::Autolock autoLock(gWVMutex);
if (!WVMExtractor::getVendorLibHandle()) {
return false;
}
typedef WVMLoadableExtractor *(*SnifferFunc)(const sp<DataSource>&);
SnifferFunc snifferFunc =
(SnifferFunc) dlsym(gVendorLibHandle,
"_ZN7android15IsWidevineMediaERKNS_2spINS_10DataSourceEEE");
if (snifferFunc) {
if ((*snifferFunc)(source)) {
*mimeType = MEDIA_MIMETYPE_CONTAINER_WVM;
*confidence = 10.0f;
return true;
}
} else {
ALOGE("IsWidevineMedia not found in libwvm.so");
}
return false;
}
} //namespace android
|
