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/*
* Copyright (C) 2009 The Android Open Source Project
* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//#define LOG_NDEBUG 0
#define LOG_TAG "MediaExtractor"
#include <utils/Log.h>
#include <cutils/properties.h>
#include "include/AMRExtractor.h"
#include "include/MP3Extractor.h"
#include "include/MPEG4Extractor.h"
#include "include/FragmentedMP4Extractor.h"
#include "include/WAVExtractor.h"
#include "include/OggExtractor.h"
#include "include/PCMExtractor.h"
#include "include/MPEG2PSExtractor.h"
#include "include/MPEG2TSExtractor.h"
#include "include/DRMExtractor.h"
#include "include/WVMExtractor.h"
#include "include/FLACExtractor.h"
#include "include/AACExtractor.h"
#ifdef QCOM_HARDWARE
#include "include/ExtendedExtractor.h"
#endif
#include "matroska/MatroskaExtractor.h"
#include <media/stagefright/foundation/AMessage.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/MediaDefs.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MetaData.h>
#include <utils/String8.h>
namespace android {
sp<MetaData> MediaExtractor::getMetaData() {
return new MetaData;
}
uint32_t MediaExtractor::flags() const {
return CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_PAUSE | CAN_SEEK;
}
// static
sp<MediaExtractor> MediaExtractor::Create(
const sp<DataSource> &source, const char *mime) {
sp<AMessage> meta;
bool bCheckExtendedExtractor = false;
String8 tmp;
if (mime == NULL) {
float confidence;
if (!source->sniff(&tmp, &confidence, &meta)) {
ALOGV("FAILED to autodetect media content.");
return NULL;
}
mime = tmp.string();
ALOGV("Autodetected media content as '%s' with confidence %.2f",
mime, confidence);
}
bool isDrm = false;
// DRM MIME type syntax is "drm+type+original" where
// type is "es_based" or "container_based" and
// original is the content's cleartext MIME type
if (!strncmp(mime, "drm+", 4)) {
const char *originalMime = strchr(mime+4, '+');
if (originalMime == NULL) {
// second + not found
return NULL;
}
++originalMime;
if (!strncmp(mime, "drm+es_based+", 13)) {
// DRMExtractor sets container metadata kKeyIsDRM to 1
return new DRMExtractor(source, originalMime);
} else if (!strncmp(mime, "drm+container_based+", 20)) {
mime = originalMime;
isDrm = true;
} else {
return NULL;
}
}
MediaExtractor *ret = NULL;
if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MPEG4)
|| !strcasecmp(mime, "audio/mp4")) {
int fragmented = 0;
if (meta != NULL && meta->findInt32("fragmented", &fragmented) && fragmented) {
ret = new FragmentedMP4Extractor(source);
} else {
ret = new MPEG4Extractor(source);
}
#ifdef QCOM_ENHANCED_AUDIO
bCheckExtendedExtractor = true;
#endif
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_MPEG)) {
ret = new MP3Extractor(source, meta);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AMR_NB)
|| !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AMR_WB)) {
ret = new AMRExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_FLAC)) {
ret = new FLACExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_WAV)) {
ret = new WAVExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_OGG)) {
ret = new OggExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MATROSKA)) {
ret = new MatroskaExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MPEG2TS)) {
ret = new MPEG2TSExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_WVM)) {
// Return now. WVExtractor should not have the DrmFlag set in the block below.
return new WVMExtractor(source);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AAC_ADTS)) {
ret = new AACExtractor(source, meta);
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_CONTAINER_MPEG2PS)) {
ret = new MPEG2PSExtractor(source);
#ifdef STE_FM
} else if (!strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_RAW)) {
ret = new PCMExtractor(source);
#endif
}
if (ret != NULL) {
if (isDrm) {
ret->setDrmFlag(true);
} else {
ret->setDrmFlag(false);
}
}
#ifdef QCOM_HARDWARE
//If default extractor created and flag is not set to check extended extractor,
// then pass default extractor.
if (ret && (!bCheckExtendedExtractor) ) {
ALOGD("returning default extractor");
return ret;
}
//Create Extended Extractor only if default extractor are not selected
ALOGV("Using ExtendedExtractor");
sp<MediaExtractor> retextParser = ExtendedExtractor::CreateExtractor(source, mime);
//if we came here, it means we do not have to use the default extractor, if created above.
bool bUseDefaultExtractor = false;
if(bCheckExtendedExtractor) {
ALOGV("bCheckExtendedExtractor is true");
//bCheckExtendedExtractor is true which means default extractor was found
// but we want to give preference to extended extractor based on certain
// codec type.Set bUseDefaultExtractor to true if extended extractor
//does not return specific codec type that we are looking for.
bUseDefaultExtractor = true;
ALOGV(" bCheckExtendedExtractor is true..checking extended extractor");
for (size_t i = 0; (retextParser!=NULL) && (i < retextParser->countTracks()); ++i) {
sp<MetaData> meta = retextParser->getTrackMetaData(i);
const char *mime;
bool success = meta->findCString(kKeyMIMEType, &mime);
if( (success == true) && !strcasecmp(mime, MEDIA_MIMETYPE_AUDIO_AMR_WB_PLUS)) {
ALOGV("Discarding default extractor and using the extended one");
//We found what we were looking for, set bUseDefaultExtractor to false;
bUseDefaultExtractor = false;
if(ret) {
//delete the default extractor as we will be using extended extractor..
delete ret;
}
break;
}
}
}
if( (retextParser != NULL) && (!bUseDefaultExtractor) ) {
ALOGV("returning retextParser");
return retextParser;
}
#endif
return ret;
}
} // namespace android
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