public final class AmrInputStream extends InputStream
Constructor and Description |
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AmrInputStream(InputStream inputStream)
Create a new AmrInputStream, which converts 16 bit PCM to AMR
|
Modifier and Type | Method and Description |
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void |
close()
Closes this input stream and releases any system resources associated
with the stream.
|
protected void |
finalize()
Called by the garbage collector on an object when garbage collection
determines that there are no more references to the object.
|
int |
read()
Reads the next byte of data from the input stream.
|
int |
read(byte[] b)
Reads some number of bytes from the input stream and stores them into
the buffer array
b . |
int |
read(byte[] b,
int offset,
int length)
Reads up to
len bytes of data from the input stream into
an array of bytes. |
available, mark, markSupported, reset, skip
public AmrInputStream(InputStream inputStream)
inputStream
- InputStream containing 16 bit PCM.public int read() throws IOException
InputStream
int
in the range 0
to
255
. If no byte is available because the end of the stream
has been reached, the value -1
is returned. This method
blocks until input data is available, the end of the stream is detected,
or an exception is thrown.
A subclass must provide an implementation of this method.
read
in class InputStream
-1
if the end of the
stream is reached.IOException
- if an I/O error occurs.public int read(byte[] b) throws IOException
InputStream
b
. The number of bytes actually read is
returned as an integer. This method blocks until input data is
available, end of file is detected, or an exception is thrown.
If the length of b
is zero, then no bytes are read and
0
is returned; otherwise, there is an attempt to read at
least one byte. If no byte is available because the stream is at the
end of the file, the value -1
is returned; otherwise, at
least one byte is read and stored into b
.
The first byte read is stored into element b[0]
, the
next one into b[1]
, and so on. The number of bytes read is,
at most, equal to the length of b
. Let k be the
number of bytes actually read; these bytes will be stored in elements
b[0]
through b[
k-1]
,
leaving elements b[
k]
through
b[b.length-1]
unaffected.
The read(b)
method for class InputStream
has the same effect as:
read(b, 0, b.length)
read
in class InputStream
b
- the buffer into which the data is read.-1
if there is no more data because the end of
the stream has been reached.IOException
- If the first byte cannot be read for any reason
other than the end of the file, if the input stream has been closed, or
if some other I/O error occurs.InputStream.read(byte[], int, int)
public int read(byte[] b, int offset, int length) throws IOException
InputStream
len
bytes of data from the input stream into
an array of bytes. An attempt is made to read as many as
len
bytes, but a smaller number may be read.
The number of bytes actually read is returned as an integer.
This method blocks until input data is available, end of file is detected, or an exception is thrown.
If len
is zero, then no bytes are read and
0
is returned; otherwise, there is an attempt to read at
least one byte. If no byte is available because the stream is at end of
file, the value -1
is returned; otherwise, at least one
byte is read and stored into b
.
The first byte read is stored into element b[off]
, the
next one into b[off+1]
, and so on. The number of bytes read
is, at most, equal to len
. Let k be the number of
bytes actually read; these bytes will be stored in elements
b[off]
through b[off+
k-1]
,
leaving elements b[off+
k]
through
b[off+len-1]
unaffected.
In every case, elements b[0]
through
b[off]
and elements b[off+len]
through
b[b.length-1]
are unaffected.
The read(b,
off,
len)
method
for class InputStream
simply calls the method
read()
repeatedly. If the first such call results in an
IOException
, that exception is returned from the call to
the read(b,
off,
len)
method. If
any subsequent call to read()
results in a
IOException
, the exception is caught and treated as if it
were end of file; the bytes read up to that point are stored into
b
and the number of bytes read before the exception
occurred is returned. The default implementation of this method blocks
until the requested amount of input data len
has been read,
end of file is detected, or an exception is thrown. Subclasses are encouraged
to provide a more efficient implementation of this method.
read
in class InputStream
b
- the buffer into which the data is read.offset
- the start offset in array b
at which the data is written.length
- the maximum number of bytes to read.-1
if there is no more data because the end of
the stream has been reached.IOException
- If the first byte cannot be read for any reason
other than end of file, or if the input stream has been closed, or if
some other I/O error occurs.InputStream.read()
public void close() throws IOException
InputStream
The close
method of InputStream
does
nothing.
close
in interface Closeable
close
in interface AutoCloseable
close
in class InputStream
IOException
- if an I/O error occurs.protected void finalize() throws Throwable
Object
finalize
method to dispose of
system resources or to perform other cleanup.
The general contract of finalize
is that it is invoked
if and when the JavaTM virtual
machine has determined that there is no longer any
means by which this object can be accessed by any thread that has
not yet died, except as a result of an action taken by the
finalization of some other object or class which is ready to be
finalized. The finalize
method may take any action, including
making this object available again to other threads; the usual purpose
of finalize
, however, is to perform cleanup actions before
the object is irrevocably discarded. For example, the finalize method
for an object that represents an input/output connection might perform
explicit I/O transactions to break the connection before the object is
permanently discarded.
The finalize
method of class Object
performs no
special action; it simply returns normally. Subclasses of
Object
may override this definition.
The Java programming language does not guarantee which thread will
invoke the finalize
method for any given object. It is
guaranteed, however, that the thread that invokes finalize will not
be holding any user-visible synchronization locks when finalize is
invoked. If an uncaught exception is thrown by the finalize method,
the exception is ignored and finalization of that object terminates.
After the finalize
method has been invoked for an object, no
further action is taken until the Java virtual machine has again
determined that there is no longer any means by which this object can
be accessed by any thread that has not yet died, including possible
actions by other objects or classes which are ready to be finalized,
at which point the object may be discarded.
The finalize
method is never invoked more than once by a Java
virtual machine for any given object.
Any exception thrown by the finalize
method causes
the finalization of this object to be halted, but is otherwise
ignored.