| // Copyright 2019 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/modules/compression/decompression_stream.h" |
| |
| #include "base/metrics/histogram_macros.h" |
| #include "third_party/blink/renderer/modules/compression/compression_format.h" |
| #include "third_party/blink/renderer/modules/compression/inflate_transformer.h" |
| #include "third_party/blink/renderer/platform/bindings/exception_state.h" |
| |
| namespace blink { |
| |
| DecompressionStream* DecompressionStream::Create( |
| ScriptState* script_state, |
| const AtomicString& format, |
| ExceptionState& exception_state) { |
| return MakeGarbageCollected<DecompressionStream>(script_state, format, |
| exception_state); |
| } |
| |
| ReadableStream* DecompressionStream::readable() const { |
| return transform_->Readable(); |
| } |
| |
| WritableStream* DecompressionStream::writable() const { |
| return transform_->Writable(); |
| } |
| |
| void DecompressionStream::Trace(Visitor* visitor) const { |
| visitor->Trace(transform_); |
| ScriptWrappable::Trace(visitor); |
| } |
| |
| DecompressionStream::DecompressionStream(ScriptState* script_state, |
| const AtomicString& format, |
| ExceptionState& exception_state) { |
| CompressionFormat inflate_format = |
| LookupCompressionFormat(format, exception_state); |
| if (exception_state.HadException()) |
| return; |
| |
| UMA_HISTOGRAM_ENUMERATION("Blink.Compression.DecompressionStream.Format", |
| inflate_format); |
| |
| transform_ = TransformStream::Create( |
| script_state, |
| MakeGarbageCollected<InflateTransformer>(script_state, inflate_format), |
| exception_state); |
| } |
| |
| } // namespace blink |
