HttpEngineDataSource

@RequiresExtension(extension = Build.VERSION_CODES.S, version = 7)
@UnstableApi
class HttpEngineDataSource : BaseDataSource, HttpDataSource

kotlin.Any
   ↳ androidx.media3.datasource.BaseDataSource
     ↳ androidx.media3.datasource.HttpEngineDataSource

DataSource without intermediate buffer based on HttpEngine set using UrlRequest.

Note: HTTP request headers will be set using all parameters passed via (in order of decreasing priority) the dataSpec, setRequestProperty and the default parameters used to construct the instance.

Summary

Nested types

DataSource.Factory for HttpEngineDataSource instances.

Thrown when an error is encountered when trying to open a HttpEngineDataSource.

Constants
const Int

The default connection timeout, in milliseconds.
const Int

The default read timeout, in milliseconds.

Public functions
Unit

Clears all request headers that were set by setRequestProperty.
Unit

Clears the value of a request header.
synchronized Unit

Closes the source.
Int

When the source is open, returns the HTTP response status code associated with the last open call.
(Mutable)Map<String!, (Mutable)List<String!>!>!

When the source is open, returns the response headers associated with the last open call.
Uri?

When the source is open, returns the Uri from which data is being read.
Long

Opens the source to read the specified data.
Int

Reads up to buffer.remaining() bytes of data and stores them into buffer, starting at buffer.position().
Int
@UnstableApi
read(buffer: ByteArray!, offset: Int, length: Int)

Reads up to length bytes of data from the input.
Unit

Sets the value of a request header.

Inherited Constants
From androidx.media3.datasource.HttpDataSource
const Predicate<String!>!

A Predicate that rejects content types often used for pay-walls.

Inherited functions
From androidx.media3.datasource.BaseDataSource
Unit

Adds a TransferListener to listen to data transfers.
Unit
bytesTransferred(bytesTransferred: Int)

Notifies listeners that bytes were transferred.
Unit

Notifies listeners that a transfer ended.
Unit

Notifies listeners that data transfer for the specified DataSpec is being initialized.
Unit

Notifies listeners that data transfer for the specified DataSpec started.

Constants

DEFAULT_CONNECT_TIMEOUT_MILLIS

@UnstableApi
const val DEFAULT_CONNECT_TIMEOUT_MILLIS = 8000: Int

The default connection timeout, in milliseconds.

DEFAULT_READ_TIMEOUT_MILLIS

@UnstableApi
const val DEFAULT_READ_TIMEOUT_MILLIS = 8000: Int

The default read timeout, in milliseconds.

Public functions

clearAllRequestProperties

@UnstableApi
fun clearAllRequestProperties(): Unit

Clears all request headers that were set by setRequestProperty.

clearRequestProperty

@UnstableApi
fun clearRequestProperty(name: String!): Unit

Clears the value of a request header. The change will apply to subsequent connections established by the source.

Parameters
name: String!

The name of the header field.

close

@UnstableApi
synchronized fun close(): Unit

Closes the source. This method must be called even if the corresponding call to open threw an IOException.

Throws
java.io.IOException

If an error occurs closing the source.

getResponseCode

@UnstableApi
fun getResponseCode(): Int

When the source is open, returns the HTTP response status code associated with the last open call. Otherwise, returns a negative value.

getResponseHeaders

@UnstableApi
fun getResponseHeaders(): (Mutable)Map<String!, (Mutable)List<String!>!>!

When the source is open, returns the response headers associated with the last open call. Otherwise, returns an empty map.

Key look-up in the returned map is case-insensitive.

getUri

@UnstableApi
fun getUri(): Uri?

When the source is open, returns the Uri from which data is being read. The returned Uri will be identical to the one passed open in the DataSpec unless redirection has occurred. If redirection has occurred, the Uri after redirection is returned.

Returns
Uri?

The Uri from which data is being read, or null if the source is not open.

open

@UnstableApi
fun open(dataSpec: DataSpec!): Long

Opens the source to read the specified data. If an IOException is thrown, callers must still call close to ensure that any partial effects of the invocation are cleaned up.

The following edge case behaviors apply:

Parameters
dataSpec: DataSpec!

Defines the data to be read.
Returns
Long

The number of bytes that can be read from the opened source. For unbounded requests (i.e., requests where length equals LENGTH_UNSET) this value is the resolved length of the request, or LENGTH_UNSET if the length is still unresolved. For all other requests, the value returned will be equal to the request's length.
Throws
java.io.IOException

If an error occurs opening the source. DataSourceException can be thrown or used as a cause of the thrown exception to specify the reason of the error.
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

read

@UnstableApi
fun read(buffer: ByteBuffer!): Int

Reads up to buffer.remaining() bytes of data and stores them into buffer, starting at buffer.position(). Advances the position of the buffer by the number of bytes read and returns this length.

If there is an error, a HttpDataSourceException is thrown and the contents of buffer should be ignored. If the exception has error code HttpDataSourceException.TYPE_READ, note that HttpEngine may continue writing into buffer after the method has returned. Thus the caller should not attempt to reuse the buffer.

If buffer.remaining() is zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, then RESULT_END_OF_INPUT is returned. Otherwise, the call will block until at least one byte of data has been read and the number of bytes read is returned.

Passed buffer must be direct ByteBuffer. If you have a non-direct ByteBuffer, consider the alternative read method with its backed array.

Parameters
buffer: ByteBuffer!

The ByteBuffer into which the read data should be stored. Must be a direct ByteBuffer.
Returns
Int

The number of bytes read, or RESULT_END_OF_INPUT if no data is available because the end of the opened range has been reached.
Throws
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

If an error occurs reading from the source.
java.lang.IllegalArgumentException

If buffer is not a direct ByteBuffer.

read

@UnstableApi
fun read(buffer: ByteArray!, offset: Int, length: Int): Int

Reads up to length bytes of data from the input.

If readLength is zero then 0 is returned. Otherwise, if no data is available because the end of the opened range has been reached, then RESULT_END_OF_INPUT is returned. Otherwise, the call will block until at least one byte of data has been read and the number of bytes read is returned.

Parameters
buffer: ByteArray!

A target array into which data should be written.
offset: Int

The offset into the target array at which to write.
length: Int

The maximum number of bytes to read from the input.
Returns
Int

The number of bytes read, or RESULT_END_OF_INPUT if the input has ended. This may be less than length because the end of the input (or available data) was reached, the method was interrupted, or the operation was aborted early for another reason.
Throws
java.io.IOException

If an error occurs reading from the input.
androidx.media3.datasource.HttpDataSource.HttpDataSourceException

setRequestProperty

@UnstableApi
fun setRequestProperty(name: String!, value: String!): Unit

Sets the value of a request header. The value will be used for subsequent connections established by the source.

Note: If the same header is set as a default parameter in the Factory, then the header value set with this method should be preferred when connecting with the data source. See open.

Parameters
name: String!

The name of the header field.
value: String!

The value of the field.