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path: root/amavutils/ammodule.c (plain)
blob: d4348e1879f64f91cec404adbb9cd4aa9e921e1f
1/*
2 * Copyright (C) 2008 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 <ammodule.h>
18#include <dlfcn.h>
19#include <string.h>
20#include <pthread.h>
21#include <errno.h>
22#include <limits.h>
23#include <unistd.h>
24#define LOG_TAG "ammodule"
25#ifdef ANDROID
26#include <utils/Log.h>
27#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
28#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
29#define LOGV(...)
30#else
31#define LOGI printf
32#define LOGE printf
33#define LOGV printf
34#endif
35#include <amconfigutils.h>
36/** Base path of the hal modules */
37#define AM_LIBRARY_PATH1 "/system/lib/amplayer"
38#define AM_LIBRARY_PATH2 "/vendor/lib/amplayer"
39#define AM_LIBRARY_SETTING "media.libplayer.modulepath"
40
41static const char *defaut_path[] = {
42 AM_LIBRARY_PATH1,
43 AM_LIBRARY_PATH2,
44 ""/*real path.*/
45
46};
47
48static const int PATH_COUNT =
49 (sizeof(defaut_path) / sizeof(defaut_path[0]));
50
51/**
52 * Load the file defined by the variant and if successful
53 * return the dlopen handle and the hmi.
54 * @return 0 = success, !0 = failure.
55 */
56static int amload(const char *path,
57 const struct ammodule_t **pHmi)
58{
59 int status;
60 void *handle;
61 struct ammodule_t *hmi;
62
63 /*
64 * load the symbols resolving undefined symbols before
65 * dlopen returns. Since RTLD_GLOBAL is not or'd in with
66 * RTLD_NOW the external symbols will not be global
67 */
68 handle = dlopen(path, RTLD_NOW);
69 if (handle == NULL) {
70 char const *err_str = dlerror();
71 LOGE("amload: module=%s\n%s", path, err_str ? err_str : "unknown");
72 status = -EINVAL;
73 goto done;
74 }
75
76 /* Get the address of the struct hal_module_info. */
77 const char *sym = AMPLAYER_MODULE_INFO_SYM_AS_STR;
78 hmi = (struct ammodule_t *)dlsym(handle, sym);
79 if (hmi == NULL) {
80 LOGE("amload: couldn't find symbol %s", sym);
81 status = -EINVAL;
82 goto done;
83 }
84
85 hmi->dso = handle;
86
87 /* success */
88 status = 0;
89 if (hmi->tag != AMPLAYER_MODULE_TAG ||
90 hmi->version_major != AMPLAYER_API_MAIOR) {
91 status = -1;
92 LOGE("module tag,api unsupport tag=%d,expect=%d api=%d.%d,expect=%d.%d\n",
93 hmi->tag, AMPLAYER_MODULE_TAG,
94 hmi->version_major, hmi->version_minor,
95 AMPLAYER_API_MAIOR, AMPLAYER_API_MINOR);
96 }
97done:
98 if (status != 0) {
99 hmi = NULL;
100 if (handle != NULL) {
101 dlclose(handle);
102 handle = NULL;
103 }
104 } else {
105 LOGV("loaded module path=%s hmi=%p handle=%p",
106 path, *pHmi, handle);
107 }
108
109 *pHmi = hmi;
110
111 return status;
112}
113
114int ammodule_load_module(const char *modulename, const struct ammodule_t **module)
115{
116 int status = -ENOENT;;
117 int i;
118 const struct ammodule_t *hmi = NULL;
119 char prop[PATH_MAX];
120 char path[PATH_MAX];
121 char name[PATH_MAX];
122 const char *prepath = NULL;
123
124 snprintf(name, PATH_MAX, "%s", modulename);
125
126 for (i = -1 ; i < PATH_COUNT; i++) {
127 if (i >= 0) {
128 prepath = defaut_path[i];
129 } else {
130 if (am_getconfig(AM_LIBRARY_SETTING, prop, NULL) <= 0) {
131 continue;
132 }
133 prepath = prop;
134 }
135 snprintf(path, sizeof(path), "%s/lib%s.so",
136 prepath, name);
137 if (access(path, R_OK) == 0) {
138 break;
139 }
140 snprintf(path, sizeof(path), "%s/%s.so",
141 prepath, name);
142 if (access(path, R_OK) == 0) {
143 break;
144 }
145
146 snprintf(path, sizeof(path), "%s/%s",
147 prepath, name);
148 if (access(path, R_OK) == 0) {
149 break;
150 }
151 snprintf(path, sizeof(path), "%s",
152 name);
153 if (access(path, R_OK) == 0) {
154 break;
155 }
156 }
157
158 status = -ENOENT;
159 if (i < PATH_COUNT) {
160 /* load the module, if this fails, we're doomed, and we should not try
161 * to load a different variant. */
162 status = amload(path, module);
163 }
164 LOGI("load mode %s,on %s %d\n", modulename, path, status);
165 return status;
166}
167
168int ammodule_open_module(struct ammodule_t *module)
169{
170 int ret = -1000;
171
172 if (module->methods) {
173 ret = module->methods->init(module, 0);
174 }
175 if (ret != 0) {
176 LOGE("open module (%s) failed ret(%d)\n", module->name, ret);
177 } else {
178 LOGI("open module success,\n\tname:%s\n\t%s\n", module->name, module->descript);
179 }
180 return 0;
181}
182int ammodule_match_check(const char* filefmtstr, const char* fmtsetting)
183{
184 const char * psets = fmtsetting;
185 const char *psetend;
186 int psetlen = 0;
187 char codecstr[64] = "";
188 if (filefmtstr == NULL || fmtsetting == NULL) {
189 return 0;
190 }
191
192 while (psets && psets[0] != '\0') {
193 psetlen = 0;
194 psetend = strchr(psets, ',');
195 if (psetend != NULL && psetend > psets && psetend - psets < 64) {
196 psetlen = psetend - psets;
197 memcpy(codecstr, psets, psetlen);
198 codecstr[psetlen] = '\0';
199 psets = &psetend[1]; //skip ";"
200 } else {
201 strcpy(codecstr, psets);
202 psets = NULL;
203 }
204 if (strlen(codecstr) > 0) {
205 if (strstr(filefmtstr, codecstr) != NULL) {
206 return 1;
207 }
208 }
209 }
210 return 0;
211}
212
213int ammodule_simple_load_module(char* name)
214{
215 int ret;
216 struct ammodule_t *module;
217 ret = ammodule_load_module(name, &module);
218 if (ret == 0) {
219 ret = ammodule_open_module(module);
220 }
221 return ret;
222
223}
generated by cgit at 2024-05-18 11:48:37 (GMT)