1 /*
2 * Copyright (c) 2014 Intel Corporation. All rights reserved.
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 #define LOG_TAG "drm_vendor_api"
18
19 #include <log/log.h>
20 #include <dlfcn.h>
21 #include <string.h>
22
23 #include "drm_vendor_api.h"
24
25 #define LIB_DRM_VENDOR "libsepdrm_cc54.so"
26
drm_vendor_api_init(struct drm_vendor_api * api)27 uint32_t drm_vendor_api_init(struct drm_vendor_api *api)
28 {
29 uint32_t got_error = 0;
30
31 if (api == NULL) {
32 ALOGE("%s: NULL parameter provided", __func__);
33 return 1;
34 }
35
36 api->handle = dlopen(LIB_DRM_VENDOR, RTLD_NOW);
37 if (api->handle == NULL) {
38 ALOGE("%s: couldn't dlopen %s : %s", __func__, LIB_DRM_VENDOR, dlerror());
39 drm_vendor_api_deinit(api);
40 return 1;
41 } else {
42 api->drm_keep_alive = (drm_keep_alive_t) dlsym(api->handle, "drm_keep_alive");
43 if (api->drm_keep_alive == NULL) {
44 ALOGE("%s: couldn't dlsym drm_keep_alive in %s : %s",
45 __func__, LIB_DRM_VENDOR, dlerror());
46 got_error = 1;
47 }
48 api->drm_start_playback = (drm_start_playback_t) dlsym(api->handle, "drm_start_playback");
49 if (api->drm_start_playback == NULL) {
50 ALOGE("%s: couldn't dlsym drm_start_playback in %s : %s",
51 __func__, LIB_DRM_VENDOR, dlerror());
52 got_error = 1;
53 }
54 api->drm_stop_playback = (drm_stop_playback_t) dlsym(api->handle, "drm_stop_playback");
55 if (api->drm_stop_playback == NULL) {
56 ALOGE("%s: couldn't dlsym drm_stop_playback in %s : %s",
57 __func__, LIB_DRM_VENDOR, dlerror());
58 got_error = 1;
59 }
60 api->drm_pr_return_naluheaders = (drm_pr_return_naluheaders_t) dlsym(api->handle,
61 "drm_pr_return_naluheaders");
62 if (api->drm_pr_return_naluheaders == NULL) {
63 ALOGE("%s: couldn't dlsym drm_pr_return_naluheaders in %s : %s",
64 __func__, LIB_DRM_VENDOR, dlerror());
65 got_error = 1;
66 }
67 api->drm_wv_return_naluheaders =
68 (drm_wv_return_naluheaders_t) dlsym(api->handle, "drm_wv_return_naluheaders");
69 if (api->drm_wv_return_naluheaders == NULL) {
70 ALOGE("%s: couldn't dlsym drm_wv_return_naluheaders in %s : %s",
71 __func__, LIB_DRM_VENDOR, dlerror());
72 got_error = 1;
73 }
74 if (got_error) {
75 drm_vendor_api_deinit(api);
76 return 1;
77 }
78 }
79 return 0;
80 }
81
drm_vendor_api_deinit(struct drm_vendor_api * api)82 uint32_t drm_vendor_api_deinit(struct drm_vendor_api *api)
83 {
84 if (api == NULL) {
85 ALOGE("%s: NULL parameter provided", __func__);
86 return 1;
87 }
88 if(api->handle) {
89 if (dlclose(api->handle)) {
90 ALOGE("%s: couldn't dlcose %s : %s", __func__, LIB_DRM_VENDOR, dlerror());
91 return 1;
92 }
93 }
94 memset(api, 0, sizeof(struct drm_vendor_api));
95 return 0;
96 }
97