soarqin/DSP_Mods
1
0
Fork 0
mirror of https://github.com/soarqin/DSP_Mods.git synced 2025-12-09 14:53:30 +08:00
Code Activity

CompressSave: release 1.3.0

Browse Source
This commit is contained in:
Soar Qin
2023-07-12 00:02:45 +08:00
parent cb88f268f6
commit f7e1882fa3
14 changed files with 532 additions and 231 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
CompressSave/LZ4WrapC/lz4/lz4frame.h
View File

@@ -215,9 +215,19 @@ LZ4FLIB_API int LZ4F_compressionLevel_max(void); /* v1.8.0+ */
LZ4FLIB_API size_t LZ4F_compressFrameBound(size_t srcSize, const LZ4F_preferences_t* preferencesPtr);
/*! LZ4F_compressFrame() :
* Compress an entire srcBuffer into a valid LZ4 frame.
* dstCapacity MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
* The LZ4F_preferences_t structure is optional : you can provide NULL as argument. All preferences will be set to default.
* Compress srcBuffer content into an LZ4-compressed frame.
* It's a one shot operation, all input content is consumed, and all output is generated.
*
* Note : it's a stateless operation (no LZ4F_cctx state needed).
* In order to reduce load on the allocator, LZ4F_compressFrame(), by default,
* uses the stack to allocate space for the compression state and some table.
* If this usage of the stack is too much for your application,
* consider compiling `lz4frame.c` with compile-time macro LZ4F_HEAPMODE set to 1 instead.
* All state allocations will use the Heap.
* It also means each invocation of LZ4F_compressFrame() will trigger several internal alloc/free invocations.
*
* @dstCapacity MUST be >= LZ4F_compressFrameBound(srcSize, preferencesPtr).
* @preferencesPtr is optional : one can provide NULL, in which case all preferences are set to default.
* @return : number of bytes written into dstBuffer.
* or an error code if it fails (can be tested using LZ4F_isError())
*/
@@ -463,6 +473,11 @@ LZ4F_getFrameInfo(LZ4F_dctx* dctx,
* `dstBuffer` can freely change between each consecutive function invocation.
* `dstBuffer` content will be overwritten.
*
* Note: if `LZ4F_getFrameInfo()` is called before `LZ4F_decompress()`, srcBuffer must be updated to reflect
* the number of bytes consumed after reading the frame header. Failure to update srcBuffer before calling
* `LZ4F_decompress()` will cause decompression failure or, even worse, successful but incorrect decompression.
* See the `LZ4F_getFrameInfo()` docs for details.
*
* @return : an hint of how many `srcSize` bytes LZ4F_decompress() expects for next call.
* Schematically, it's the size of the current (or remaining) compressed block + header of next block.
* Respecting the hint provides some small speed benefit, because it skips intermediate buffers.
@@ -660,7 +675,7 @@ LZ4F_decompress_usingDict(LZ4F_dctx* dctxPtr,
const LZ4F_decompressOptions_t* decompressOptionsPtr);
/*! Custom memory allocation :
/*! Custom memory allocation : v1.9.4+
* These prototypes make it possible to pass custom allocation/free functions.
* LZ4F_customMem is provided at state creation time, using LZ4F_create*_advanced() listed below.
* All allocation/free operations will be completed using these custom variants instead of regular <stdlib.h> ones.