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Putting data results in writing the compressed/decompressed output into a RingBuffer. You can retrieve the content of the RingBuffer via get_data. Support both gzip and deflate.
76 lines
3.4 KiB
C++
76 lines
3.4 KiB
C++
/*************************************************************************/
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/* stream_peer_gzip.h */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifndef STREAM_PEER_GZIP_H
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#define STREAM_PEER_GZIP_H
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#include "core/io/stream_peer.h"
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#include "core/core_bind.h"
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#include "core/io/compression.h"
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#include "core/templates/ring_buffer.h"
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class StreamPeerGZIP : public StreamPeer {
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GDCLASS(StreamPeerGZIP, StreamPeer);
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private:
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void *ctx = nullptr; // Will hold our z_stream instance.
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bool compressing = true;
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RingBuffer<uint8_t> rb;
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Vector<uint8_t> buffer;
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Error _process(uint8_t *p_dst, int p_dst_size, const uint8_t *p_src, int p_src_size, int &r_consumed, int &r_out, bool p_close = false);
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void _close();
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Error _start(bool p_compress, bool p_is_deflate, int buffer_size = 65535);
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protected:
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static void _bind_methods();
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public:
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Error start_compression(bool p_is_deflate, int buffer_size = 65535);
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Error start_decompression(bool p_is_deflate, int buffer_size = 65535);
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Error finish();
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void clear();
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virtual Error put_data(const uint8_t *p_data, int p_bytes) override;
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virtual Error put_partial_data(const uint8_t *p_data, int p_bytes, int &r_sent) override;
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virtual Error get_data(uint8_t *p_buffer, int p_bytes) override;
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virtual Error get_partial_data(uint8_t *p_buffer, int p_bytes, int &r_received) override;
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virtual int get_available_bytes() const override;
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StreamPeerGZIP();
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~StreamPeerGZIP();
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};
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#endif // STREAM_PEER_GZIP_H
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