本文整理汇总了Java中android.media.MediaExtractor.getSampleTime方法的典型用法代码示例。如果您正苦于以下问题：Java MediaExtractor.getSampleTime方法的具体用法？Java MediaExtractor.getSampleTime怎么用？Java MediaExtractor.getSampleTime使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类android.media.MediaExtractor的用法示例。
在下文中一共展示了MediaExtractor.getSampleTime方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: readAndWriteTrack
import android.media.MediaExtractor; //导入方法依赖的package包/类
@TargetApi(16)
private long readAndWriteTrack(final MessageObject messageObject, MediaExtractor extractor, MP4Builder mediaMuxer, MediaCodec.BufferInfo info, long start, long end, File file, boolean isAudio) throws Exception {
int trackIndex = selectTrack(extractor, isAudio);
if (trackIndex >= 0) {
extractor.selectTrack(trackIndex);
MediaFormat trackFormat = extractor.getTrackFormat(trackIndex);
int muxerTrackIndex = mediaMuxer.addTrack(trackFormat, isAudio);
int maxBufferSize = trackFormat.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
boolean inputDone = false;
if (start > 0) {
extractor.seekTo(start, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
} else {
extractor.seekTo(0, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
}
ByteBuffer buffer = ByteBuffer.allocateDirect(maxBufferSize);
long startTime = -1;
checkConversionCanceled();
long lastTimestamp = -100;
while (!inputDone) {
checkConversionCanceled();
boolean eof = false;
int index = extractor.getSampleTrackIndex();
if (index == trackIndex) {
info.size = extractor.readSampleData(buffer, 0);
if (info.size >= 0) {
info.presentationTimeUs = extractor.getSampleTime();
} else {
info.size = 0;
eof = true;
}
if (info.size > 0 && !eof) {
if (start > 0 && startTime == -1) {
startTime = info.presentationTimeUs;
}
if (end < 0 || info.presentationTimeUs < end) {
if (info.presentationTimeUs > lastTimestamp) {
info.offset = 0;
info.flags = extractor.getSampleFlags();
if (mediaMuxer.writeSampleData(muxerTrackIndex, buffer, info, isAudio)) {
didWriteData(messageObject, file, false, false);
}
}
lastTimestamp = info.presentationTimeUs;
} else {
eof = true;
}
}
if (!eof) {
extractor.advance();
}
} else if (index == -1) {
eof = true;
} else {
extractor.advance();
}
if (eof) {
inputDone = true;
}
}
extractor.unselectTrack(trackIndex);
return startTime;
}
return -1;
}
示例2: readAndWriteTrack
import android.media.MediaExtractor; //导入方法依赖的package包/类
@TargetApi(16)
private long readAndWriteTrack(MediaExtractor extractor, MP4Builder mediaMuxer, MediaCodec.BufferInfo info, long start, long end, File file, boolean isAudio) throws Exception {
int trackIndex = selectTrack(extractor, isAudio);
if (trackIndex >= 0) {
extractor.selectTrack(trackIndex);
MediaFormat trackFormat = extractor.getTrackFormat(trackIndex);
int muxerTrackIndex = mediaMuxer.addTrack(trackFormat, isAudio);
int maxBufferSize = trackFormat.getInteger(MediaFormat.KEY_MAX_INPUT_SIZE);
boolean inputDone = false;
if (start > 0) {
extractor.seekTo(start, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
} else {
extractor.seekTo(0, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
}
ByteBuffer buffer = ByteBuffer.allocateDirect(maxBufferSize);
long startTime = -1;
while (!inputDone) {
boolean eof = false;
int index = extractor.getSampleTrackIndex();
if (index == trackIndex) {
info.size = extractor.readSampleData(buffer, 0);
if (info.size < 0) {
info.size = 0;
eof = true;
} else {
info.presentationTimeUs = extractor.getSampleTime();
if (start > 0 && startTime == -1) {
startTime = info.presentationTimeUs;
}
if (end < 0 || info.presentationTimeUs < end) {
info.offset = 0;
info.flags = extractor.getSampleFlags();
if (mediaMuxer.writeSampleData(muxerTrackIndex, buffer, info, isAudio)) {
// didWriteData(messageObject, file, false, false);
}
extractor.advance();
} else {
eof = true;
}
}
} else if (index == -1) {
eof = true;
}
if (eof) {
inputDone = true;
}
}
extractor.unselectTrack(trackIndex);
return startTime;
}
return -1;
}
示例3: extractAndFeedDecoder
import android.media.MediaExtractor; //导入方法依赖的package包/类
/**
* Extract and feed to decoder.
*
* @return Finished. True when it extracts the last frame.
*/
private boolean extractAndFeedDecoder(MediaCodec decoder, ByteBuffer[] buffers, Component component) {
String type = component.getType() == Component.COMPONENT_TYPE_VIDEO ? "video" : "audio";
int decoderInputBufferIndex = decoder.dequeueInputBuffer(TIMEOUT_USEC);
if (decoderInputBufferIndex == MediaCodec.INFO_TRY_AGAIN_LATER) {
mLogger.d(String.format("no %s decoder input buffer", type));
return false;
}
mLogger.d(String.format("%s decoder: returned input buffer: %d", type, decoderInputBufferIndex));
MediaExtractor extractor = component.getMediaExtractor();
int size = extractor.readSampleData(buffers[decoderInputBufferIndex], 0);
long presentationTime = extractor.getSampleTime();
mLogger.d(String.format("%s extractor: returned buffer of size %d", type, size));
mLogger.d(String.format("%s extractor: returned buffer for time %d", type, presentationTime));
if (mTrimEndTime > 0 && presentationTime > (mTrimEndTime * 1000)) {
mLogger.d("The current sample is over the trim time. Lets stop.");
decoder.queueInputBuffer(
decoderInputBufferIndex,
0,
0,
0,
MediaCodec.BUFFER_FLAG_END_OF_STREAM);
return true;
}
if (size >= 0) {
decoder.queueInputBuffer(
decoderInputBufferIndex,
0,
size,
presentationTime,
extractor.getSampleFlags());
mStats.incrementExtractedFrameCount(component);
}
if (!extractor.advance()) {
mLogger.d(String.format("%s extractor: EOS", type));
decoder.queueInputBuffer(
decoderInputBufferIndex,
0,
0,
0,
MediaCodec.BUFFER_FLAG_END_OF_STREAM);
return true;
}
return false;
}