1 /*
2 **
3 ** Copyright 2009, The Android Open Source Project
4 **
5 ** Licensed under the Apache License, Version 2.0 (the "License");
6 ** you may not use this file except in compliance with the License.
7 ** You may obtain a copy of the License at
8 **
9 ** http://www.apache.org/licenses/LICENSE-2.0
10 **
11 ** Unless required by applicable law or agreed to in writing, software
12 ** distributed under the License is distributed on an "AS IS" BASIS,
13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 ** See the License for the specific language governing permissions and
15 ** limitations under the License.
16 */
17
18 //#define LOG_NDEBUG 0
19 #define LOG_TAG "MidiMetadataRetriever"
20 #include <utils/Log.h>
21
22 #include "MidiMetadataRetriever.h"
23 #include <media/mediametadataretriever.h>
24
25 #include <media/IMediaHTTPService.h>
26
27 namespace android {
28
29 static status_t ERROR_NOT_OPEN = -1;
30 static status_t ERROR_OPEN_FAILED = -2;
31 static status_t ERROR_EAS_FAILURE = -3;
32 static status_t ERROR_ALLOCATE_FAILED = -4;
33
clearMetadataValues()34 void MidiMetadataRetriever::clearMetadataValues()
35 {
36 ALOGV("clearMetadataValues");
37 mMetadataValues[0][0] = '\0';
38 }
39
setDataSource(const sp<IMediaHTTPService> & httpService,const char * url,const KeyedVector<String8,String8> * headers)40 status_t MidiMetadataRetriever::setDataSource(
41 const sp<IMediaHTTPService> &httpService,
42 const char *url,
43 const KeyedVector<String8, String8> *headers)
44 {
45 ALOGV("setDataSource: %s", url? url: "NULL pointer");
46 Mutex::Autolock lock(mLock);
47 clearMetadataValues();
48 if (mMidiPlayer == 0) {
49 mMidiPlayer = new MidiFile();
50 }
51 return mMidiPlayer->setDataSource(httpService, url, headers);
52 }
53
setDataSource(int fd,int64_t offset,int64_t length)54 status_t MidiMetadataRetriever::setDataSource(int fd, int64_t offset, int64_t length)
55 {
56 ALOGV("setDataSource: fd(%d), offset(%lld), and length(%lld)", fd, offset, length);
57 Mutex::Autolock lock(mLock);
58 clearMetadataValues();
59 if (mMidiPlayer == 0) {
60 mMidiPlayer = new MidiFile();
61 }
62 return mMidiPlayer->setDataSource(fd, offset, length);;
63 }
64
extractMetadata(int keyCode)65 const char* MidiMetadataRetriever::extractMetadata(int keyCode)
66 {
67 ALOGV("extractMetdata: key(%d)", keyCode);
68 Mutex::Autolock lock(mLock);
69 if (mMidiPlayer == 0 || mMidiPlayer->initCheck() != NO_ERROR) {
70 ALOGE("Midi player is not initialized yet");
71 return NULL;
72 }
73 switch (keyCode) {
74 case METADATA_KEY_DURATION:
75 {
76 if (mMetadataValues[0][0] == '\0') {
77 int duration = -1;
78 if (mMidiPlayer->getDuration(&duration) != NO_ERROR) {
79 ALOGE("failed to get duration");
80 return NULL;
81 }
82 snprintf(mMetadataValues[0], MAX_METADATA_STRING_LENGTH, "%d", duration);
83 }
84
85 ALOGV("duration: %s ms", mMetadataValues[0]);
86 return mMetadataValues[0];
87 }
88 default:
89 ALOGE("Unsupported key code (%d)", keyCode);
90 return NULL;
91 }
92 return NULL;
93 }
94
95 };
96
97