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| author | Rémi Verschelde <rverschelde@gmail.com> | 2017-07-17 22:40:47 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-07-17 22:40:47 +0200 |
| commit | 869135515818550093a10f896df3cb3434c527de (patch) | |
| tree | fc9d00a476cc918cdfc10fc619093d0a494d8daa /core/io | |
| parent | 4680effcb3a204c94cdf84e074d1852f94e25ace (diff) | |
| parent | 0f765c86e5b7fc771f5559b9e46999bd8e6239aa (diff) | |
Merge pull request #9634 from vnen/gzip-compression
Add GZIP compression support
Diffstat (limited to 'core/io')
| -rw-r--r-- | core/io/compression.cpp | 27 | ||||
| -rw-r--r-- | core/io/compression.h | 3 |
2 files changed, 18 insertions, 12 deletions
diff --git a/core/io/compression.cpp b/core/io/compression.cpp index f806c4da6d..8c8f0b3655 100644 --- a/core/io/compression.cpp +++ b/core/io/compression.cpp @@ -52,23 +52,22 @@ int Compression::compress(uint8_t *p_dst, const uint8_t *p_src, int p_src_size, } } break; - case MODE_DEFLATE: { + case MODE_DEFLATE: + case MODE_GZIP: { + + int window_bits = p_mode == MODE_DEFLATE ? 15 : 15 + 16; z_stream strm; strm.zalloc = zipio_alloc; strm.zfree = zipio_free; strm.opaque = Z_NULL; - int level = GLOBAL_GET("compression/zlib/compression_level"); - int err = deflateInit(&strm, level); + int level = p_mode == MODE_DEFLATE ? GLOBAL_GET("compression/zlib/compression_level") : GLOBAL_GET("compression/gzip/compression_level"); + int err = deflateInit2(&strm, level, Z_DEFLATED, window_bits, 8, Z_DEFAULT_STRATEGY); if (err != Z_OK) return -1; strm.avail_in = p_src_size; int aout = deflateBound(&strm, p_src_size); - /*if (aout>p_src_size) { - deflateEnd(&strm); - return -1; - }*/ strm.avail_out = aout; strm.next_in = (Bytef *)p_src; strm.next_out = p_dst; @@ -100,13 +99,16 @@ int Compression::get_max_compressed_buffer_size(int p_src_size, Mode p_mode) { return ss; } break; - case MODE_DEFLATE: { + case MODE_DEFLATE: + case MODE_GZIP: { + + int window_bits = p_mode == MODE_DEFLATE ? 15 : 15 + 16; z_stream strm; strm.zalloc = zipio_alloc; strm.zfree = zipio_free; strm.opaque = Z_NULL; - int err = deflateInit(&strm, Z_DEFAULT_COMPRESSION); + int err = deflateInit2(&strm, Z_DEFAULT_COMPRESSION, Z_DEFLATED, window_bits, 8, Z_DEFAULT_STRATEGY); if (err != Z_OK) return -1; int aout = deflateBound(&strm, p_src_size); @@ -138,7 +140,10 @@ int Compression::decompress(uint8_t *p_dst, int p_dst_max_size, const uint8_t *p } return ret_size; } break; - case MODE_DEFLATE: { + case MODE_DEFLATE: + case MODE_GZIP: { + + int window_bits = p_mode == MODE_DEFLATE ? 15 : 15 + 16; z_stream strm; strm.zalloc = zipio_alloc; @@ -146,7 +151,7 @@ int Compression::decompress(uint8_t *p_dst, int p_dst_max_size, const uint8_t *p strm.opaque = Z_NULL; strm.avail_in = 0; strm.next_in = Z_NULL; - int err = inflateInit(&strm); + int err = inflateInit2(&strm, window_bits); ERR_FAIL_COND_V(err != Z_OK, -1); strm.avail_in = p_src_size; diff --git a/core/io/compression.h b/core/io/compression.h index 742f0f4d68..bc39fc4185 100644 --- a/core/io/compression.h +++ b/core/io/compression.h @@ -37,7 +37,8 @@ public: enum Mode { MODE_FASTLZ, MODE_DEFLATE, - MODE_ZSTD + MODE_ZSTD, + MODE_GZIP }; static int compress(uint8_t *p_dst, const uint8_t *p_src, int p_src_size, Mode p_mode = MODE_ZSTD); |