1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <dlfcn.h>
18
19#include <media/stagefright/DataSource.h>
20
21#include "include/chromium_http_stub.h"
22#include "include/HTTPBase.h"
23
24namespace android {
25
26static bool gFirst = true;
27static void *gHandle;
28static Mutex gLibMutex;
29
30HTTPBase *(*gLib_createChromiumHTTPDataSource)(uint32_t flags);
31DataSource *(*gLib_createDataUriSource)(const char *uri);
32
33status_t (*gLib_UpdateChromiumHTTPDataSourceProxyConfig)(
34        const char *host, int32_t port, const char *exclusionList);
35
36static bool load_libstagefright_chromium_http() {
37    Mutex::Autolock autoLock(gLibMutex);
38    void *sym;
39
40    if (!gFirst) {
41        return (gHandle != NULL);
42    }
43
44    gFirst = false;
45
46    gHandle = dlopen("libstagefright_chromium_http.so", RTLD_NOW);
47    if (gHandle == NULL) {
48        return false;
49    }
50
51    sym = dlsym(gHandle, "createChromiumHTTPDataSource");
52    if (sym == NULL) {
53        gHandle = NULL;
54        return false;
55    }
56    gLib_createChromiumHTTPDataSource = (HTTPBase *(*)(uint32_t))sym;
57
58    sym = dlsym(gHandle, "createDataUriSource");
59    if (sym == NULL) {
60        gHandle = NULL;
61        return false;
62    }
63    gLib_createDataUriSource = (DataSource *(*)(const char *))sym;
64
65    sym = dlsym(gHandle, "UpdateChromiumHTTPDataSourceProxyConfig");
66    if (sym == NULL) {
67        gHandle = NULL;
68        return false;
69    }
70    gLib_UpdateChromiumHTTPDataSourceProxyConfig =
71        (status_t (*)(const char *, int32_t, const char *))sym;
72
73    return true;
74}
75
76HTTPBase *createChromiumHTTPDataSource(uint32_t flags) {
77    if (!load_libstagefright_chromium_http()) {
78        return NULL;
79    }
80
81    return gLib_createChromiumHTTPDataSource(flags);
82}
83
84status_t UpdateChromiumHTTPDataSourceProxyConfig(
85        const char *host, int32_t port, const char *exclusionList) {
86    if (!load_libstagefright_chromium_http()) {
87        return INVALID_OPERATION;
88    }
89
90    return gLib_UpdateChromiumHTTPDataSourceProxyConfig(
91            host, port, exclusionList);
92}
93
94DataSource *createDataUriSource(const char *uri) {
95    if (!load_libstagefright_chromium_http()) {
96        return NULL;
97    }
98
99    return gLib_createDataUriSource(uri);
100}
101
102}
103