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 25namespace android { 26 27static status_t ERROR_NOT_OPEN = -1; 28static status_t ERROR_OPEN_FAILED = -2; 29static status_t ERROR_EAS_FAILURE = -3; 30static status_t ERROR_ALLOCATE_FAILED = -4; 31 32void MidiMetadataRetriever::clearMetadataValues() 33{ 34 ALOGV("clearMetadataValues"); 35 mMetadataValues[0][0] = '\0'; 36} 37 38status_t MidiMetadataRetriever::setDataSource( 39 const char *url, const KeyedVector<String8, String8> *headers) 40{ 41 ALOGV("setDataSource: %s", url? url: "NULL pointer"); 42 Mutex::Autolock lock(mLock); 43 clearMetadataValues(); 44 if (mMidiPlayer == 0) { 45 mMidiPlayer = new MidiFile(); 46 } 47 return mMidiPlayer->setDataSource(url, headers); 48} 49 50status_t MidiMetadataRetriever::setDataSource(int fd, int64_t offset, int64_t length) 51{ 52 ALOGV("setDataSource: fd(%d), offset(%lld), and length(%lld)", fd, offset, length); 53 Mutex::Autolock lock(mLock); 54 clearMetadataValues(); 55 if (mMidiPlayer == 0) { 56 mMidiPlayer = new MidiFile(); 57 } 58 return mMidiPlayer->setDataSource(fd, offset, length);; 59} 60 61const char* MidiMetadataRetriever::extractMetadata(int keyCode) 62{ 63 ALOGV("extractMetdata: key(%d)", keyCode); 64 Mutex::Autolock lock(mLock); 65 if (mMidiPlayer == 0 || mMidiPlayer->initCheck() != NO_ERROR) { 66 ALOGE("Midi player is not initialized yet"); 67 return NULL; 68 } 69 switch (keyCode) { 70 case METADATA_KEY_DURATION: 71 { 72 if (mMetadataValues[0][0] == '\0') { 73 int duration = -1; 74 if (mMidiPlayer->getDuration(&duration) != NO_ERROR) { 75 ALOGE("failed to get duration"); 76 return NULL; 77 } 78 snprintf(mMetadataValues[0], MAX_METADATA_STRING_LENGTH, "%d", duration); 79 } 80 81 ALOGV("duration: %s ms", mMetadataValues[0]); 82 return mMetadataValues[0]; 83 } 84 default: 85 ALOGE("Unsupported key code (%d)", keyCode); 86 return NULL; 87 } 88 return NULL; 89} 90 91}; 92 93