93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
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/*
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**
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** Copyright 2009, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "MidiMetadataRetriever"
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#include <utils/Log.h>
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#include "MidiMetadataRetriever.h"
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#include <media/mediametadataretriever.h>
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namespace android {
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static status_t ERROR_NOT_OPEN = -1;
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static status_t ERROR_OPEN_FAILED = -2;
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static status_t ERROR_EAS_FAILURE = -3;
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static status_t ERROR_ALLOCATE_FAILED = -4;
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void MidiMetadataRetriever::clearMetadataValues()
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{
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LOGV("clearMetadataValues");
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mMetadataValues[0][0] = '\0';
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}
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status_t MidiMetadataRetriever::setDataSource(const char *url)
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{
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LOGV("setDataSource: %s", url? url: "NULL pointer");
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Mutex::Autolock lock(mLock);
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clearMetadataValues();
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if (mMidiPlayer == 0) {
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mMidiPlayer = new MidiFile();
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}
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// TODO: support headers in MetadataRetriever interface!
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return mMidiPlayer->setDataSource(url, NULL /* headers */);
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}
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status_t MidiMetadataRetriever::setDataSource(int fd, int64_t offset, int64_t length)
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{
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LOGV("setDataSource: fd(%d), offset(%lld), and length(%lld)", fd, offset, length);
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Mutex::Autolock lock(mLock);
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clearMetadataValues();
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if (mMidiPlayer == 0) {
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mMidiPlayer = new MidiFile();
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}
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return mMidiPlayer->setDataSource(fd, offset, length);;
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}
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const char* MidiMetadataRetriever::extractMetadata(int keyCode)
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{
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LOGV("extractMetdata: key(%d)", keyCode);
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Mutex::Autolock lock(mLock);
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if (mMidiPlayer == 0 || mMidiPlayer->initCheck() != NO_ERROR) {
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LOGE("Midi player is not initialized yet");
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return NULL;
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}
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switch (keyCode) {
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case METADATA_KEY_DURATION:
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{
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if (mMetadataValues[0][0] == '\0') {
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int duration = -1;
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if (mMidiPlayer->getDuration(&duration) != NO_ERROR) {
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LOGE("failed to get duration");
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return NULL;
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}
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snprintf(mMetadataValues[0], MAX_METADATA_STRING_LENGTH, "%d", duration);
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}
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LOGV("duration: %s ms", mMetadataValues[0]);
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return mMetadataValues[0];
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}
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default:
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LOGE("Unsupported key code (%d)", keyCode);
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return NULL;
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}
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return NULL;
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}
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};
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