AviExtractor
@UnstableApi
public final class AviExtractor implements Extractor
Extracts data from the AVI container format.
Spec: https://docs.microsoft.com/en-us/windows/win32/directshow/avi-riff-file-reference.
Summary
Nested types |
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@DocumentedFlags controlling the behavior of the extractor. |
Constants |
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static final int |
Flag to use the source subtitle formats without modification. |
static final int |
FOURCC_AVI_ = 541677121 |
static final int |
FOURCC_JUNK = 1263424842 |
static final int |
FOURCC_LIST = 1414744396 |
static final int |
FOURCC_RIFF = 1179011410 |
static final int |
FOURCC_auds = 1935963489 |
static final int |
FOURCC_avih = 1751742049 |
static final int |
FOURCC_hdrl = 1819436136 |
static final int |
FOURCC_idx1 = 829973609 |
static final int |
FOURCC_movi = 1769369453 |
static final int |
FOURCC_strf = 1718776947 |
static final int |
FOURCC_strh = 1752331379 |
static final int |
FOURCC_strl = 1819440243 |
static final int |
FOURCC_strn = 1852994675 |
static final int |
FOURCC_txts = 1937012852 |
static final int |
FOURCC_vids = 1935960438 |
Public constructors |
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This method is deprecated. Use |
AviExtractor(Constructs an instance. |
Public methods |
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void |
init(ExtractorOutput output)Initializes the extractor with an |
int |
read(ExtractorInput input, PositionHolder seekPosition)Extracts data read from a provided |
void |
release()Releases all kept resources. |
void |
seek(long position, long timeUs)Notifies the extractor that a seek has occurred. |
boolean |
sniff(ExtractorInput input)Returns whether this extractor can extract samples from the |
Inherited Constants |
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Inherited methods |
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Constants
FLAG_EMIT_RAW_SUBTITLE_DATA
public static final int FLAG_EMIT_RAW_SUBTITLE_DATA = 1
Flag to use the source subtitle formats without modification. If unset, subtitles will be transcoded to APPLICATION_MEDIA3_CUES during extraction.
Public constructors
AviExtractor
public AviExtractor(
@AviExtractor.Flags int extractorFlags,
SubtitleParser.Factory subtitleParserFactory
)
Constructs an instance.
| Parameters | |
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@AviExtractor.Flags int extractorFlags |
Flags that control the extractor's behavior. |
SubtitleParser.Factory subtitleParserFactory |
The |
Public methods
init
public void init(ExtractorOutput output)
Initializes the extractor with an ExtractorOutput. Called at most once.
| Parameters | |
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ExtractorOutput output |
An |
read
public int read(ExtractorInput input, PositionHolder seekPosition)
Extracts data read from a provided ExtractorInput. Must not be called before init.
A single call to this method will block until some progress has been made, but will not block for longer than this. Hence each call will consume only a small amount of input data.
In the common case, RESULT_CONTINUE is returned to indicate that the ExtractorInput passed to the next read is required to provide data continuing from the position in the stream reached by the returning call. If the extractor requires data to be provided from a different position, then that position is set in seekPosition and RESULT_SEEK is returned. If the extractor reached the end of the data provided by the ExtractorInput, then RESULT_END_OF_INPUT is returned.
When this method throws an IOException, extraction may continue by providing an ExtractorInput with an unchanged read position to a subsequent call to this method.
| Parameters | |
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ExtractorInput input |
The |
PositionHolder seekPosition |
If |
| Returns | |
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int |
One of the |
| Throws | |
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java.io.IOException |
If an error occurred reading from or parsing the input. |
seek
public void seek(long position, long timeUs)
Notifies the extractor that a seek has occurred.
Following a call to this method, the ExtractorInput passed to the next invocation of read is required to provide data starting from
position in the stream. Valid random access positions are the start of the stream and positions that can be obtained from any SeekMap passed to the ExtractorOutput.
| Parameters | |
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long position |
The byte offset in the stream from which data will be provided. |
long timeUs |
The seek time in microseconds. |
sniff
public boolean sniff(ExtractorInput input)
Returns whether this extractor can extract samples from the ExtractorInput, which must provide data from the start of the stream.
If true is returned, the input's reading position may have been modified. Otherwise, only its peek position may have been modified.
| Parameters | |
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ExtractorInput input |
The |
| Returns | |
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boolean |
Whether this extractor can read the provided input. |
| Throws | |
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java.io.IOException |
If an error occurred reading from the input. |