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/*
**
** Copyright 2009, The Android Open Source Project
**
** 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 "StagefrightMetadataRetriever"
#include <utils/Log.h>
#include "StagefrightMetadataRetriever.h"
#include <media/stagefright/CachingDataSource.h>
#include <media/stagefright/ColorConverter.h>
#include <media/stagefright/DataSource.h>
#include <media/stagefright/HTTPDataSource.h>
#include <media/stagefright/MediaDebug.h>
#include <media/stagefright/MediaExtractor.h>
#include <media/stagefright/MetaData.h>
#include <media/stagefright/MmapSource.h>
#include <media/stagefright/OMXCodec.h>
namespace android {
StagefrightMetadataRetriever::StagefrightMetadataRetriever() {
LOGV("StagefrightMetadataRetriever()");
DataSource::RegisterDefaultSniffers();
CHECK_EQ(mClient.connect(), OK);
}
StagefrightMetadataRetriever::~StagefrightMetadataRetriever() {
LOGV("~StagefrightMetadataRetriever()");
mClient.disconnect();
}
status_t StagefrightMetadataRetriever::setDataSource(const char *uri) {
LOGV("setDataSource(%s)", uri);
sp<DataSource> source;
if (!strncasecmp("file://", uri, 7)) {
sp<MmapSource> mmapSource = new MmapSource(uri + 7);
if (mmapSource->InitCheck() != OK) {
return ERROR_IO;
}
source = mmapSource;
} else if (!strncasecmp("http://", uri, 7)) {
source = new HTTPDataSource(uri);
source = new CachingDataSource(source, 64 * 1024, 10);
} else {
// Assume it's a filename.
sp<MmapSource> mmapSource = new MmapSource(uri);
if (mmapSource->InitCheck() != OK) {
return ERROR_IO;
}
source = mmapSource;
}
mExtractor = MediaExtractor::Create(source);
return mExtractor.get() != NULL ? OK : UNKNOWN_ERROR;
}
status_t StagefrightMetadataRetriever::setDataSource(
int fd, int64_t offset, int64_t length) {
LOGV("setDataSource(%d, %lld, %lld)", fd, offset, length);
mExtractor = MediaExtractor::Create(
new MmapSource(fd, offset, length));
return OK;
}
VideoFrame *StagefrightMetadataRetriever::captureFrame() {
LOGV("captureFrame");
if (mExtractor.get() == NULL) {
LOGV("no extractor.");
return NULL;
}
size_t n = mExtractor->countTracks();
size_t i;
for (i = 0; i < n; ++i) {
sp<MetaData> meta = mExtractor->getTrackMetaData(i);
const char *mime;
CHECK(meta->findCString(kKeyMIMEType, &mime));
if (!strncasecmp(mime, "video/", 6)) {
break;
}
}
if (i == n) {
LOGV("no video track found.");
return NULL;
}
sp<MetaData> trackMeta = mExtractor->getTrackMetaData(
i, MediaExtractor::kIncludeExtensiveMetaData);
sp<MediaSource> source = mExtractor->getTrack(i);
if (source.get() == NULL) {
LOGV("unable to instantiate video track.");
return NULL;
}
sp<MetaData> meta = source->getFormat();
sp<MediaSource> decoder =
OMXCodec::Create(
mClient.interface(), meta, false, source,
NULL, OMXCodec::kPreferSoftwareCodecs);
if (decoder.get() == NULL) {
LOGV("unable to instantiate video decoder.");
return NULL;
}
decoder->start();
// Read one output buffer, ignore format change notifications
// and spurious empty buffers.
MediaSource::ReadOptions options;
int64_t thumbNailTime;
if (trackMeta->findInt64(kKeyThumbnailTime, &thumbNailTime)) {
options.setSeekTo(thumbNailTime);
}
MediaBuffer *buffer = NULL;
status_t err;
do {
if (buffer != NULL) {
buffer->release();
buffer = NULL;
}
err = decoder->read(&buffer, &options);
options.clearSeekTo();
} while (err == INFO_FORMAT_CHANGED
|| (buffer != NULL && buffer->range_length() == 0));
if (err != OK) {
CHECK_EQ(buffer, NULL);
LOGV("decoding frame failed.");
decoder->stop();
return NULL;
}
LOGV("successfully decoded video frame.");
meta = decoder->getFormat();
int32_t width, height;
CHECK(meta->findInt32(kKeyWidth, &width));
CHECK(meta->findInt32(kKeyHeight, &height));
VideoFrame *frame = new VideoFrame;
frame->mWidth = width;
frame->mHeight = height;
frame->mDisplayWidth = width;
frame->mDisplayHeight = height;
frame->mSize = width * height * 2;
frame->mData = new uint8_t[frame->mSize];
int32_t srcFormat;
CHECK(meta->findInt32(kKeyColorFormat, &srcFormat));
ColorConverter converter(
(OMX_COLOR_FORMATTYPE)srcFormat, OMX_COLOR_Format16bitRGB565);
CHECK(converter.isValid());
converter.convert(
width, height,
(const uint8_t *)buffer->data() + buffer->range_offset(),
0,
frame->mData, width * 2);
buffer->release();
buffer = NULL;
decoder->stop();
return frame;
}
MediaAlbumArt *StagefrightMetadataRetriever::extractAlbumArt() {
LOGV("extractAlbumArt (extractor: %s)", mExtractor.get() != NULL ? "YES" : "NO");
return NULL;
}
const char *StagefrightMetadataRetriever::extractMetadata(int keyCode) {
LOGV("extractMetadata %d (extractor: %s)",
keyCode, mExtractor.get() != NULL ? "YES" : "NO");
return NULL;
}
} // namespace android
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