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 27namespace android { 28 29static status_t ERROR_NOT_OPEN = -1; 30static status_t ERROR_OPEN_FAILED = -2; 31static status_t ERROR_EAS_FAILURE = -3; 32static status_t ERROR_ALLOCATE_FAILED = -4; 33 34void MidiMetadataRetriever::clearMetadataValues() 35{ 36 ALOGV("clearMetadataValues"); 37 mMetadataValues[0][0] = '\0'; 38} 39 40status_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 54status_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 65const 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