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libretroadmin
cf9d102864
The libretro-common submodule pinned the standalone repository at 76a3d54. It is replaced by an in-tree copy of RetroArch master (b655a20) holding only what the core uses: the VFS, file, string, encoding, compat and time sources it already built, the headers they and the core include, the threading set - rthreads, retro_atomic, retro_spsc and retro_waitable_spsc, mpsc_stack, retro_triple_buffer, retro_eventcount, retro_asym_eventcount, retro_procbarrier and tpool, with features_cpu and rstrtod, which they need - and the codecs that replace the bundled zlib, zstd, libchdr, libzip and libpng: rinflate and rdeflate, rzstd, rchd with its LZMA and FLAC decoders, rzip_archive, rpng and crc32. stdstring.c, which nothing calls, is no longer built. The threading sources are always built, by both the static Makefile and CMake; the VFS set stays behind HAVE_LIBRETRO_VFS as before. The codecs are built by the change that switches the core over to them.
135 lines
5.1 KiB
C
135 lines
5.1 KiB
C
/* Copyright (C) 2010-2020 The RetroArch team
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*
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* ---------------------------------------------------------------------------------------
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* The following license statement only applies to this file (trans_stream.h).
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* ---------------------------------------------------------------------------------------
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*
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* Permission is hereby granted, free of charge,
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* to any person obtaining a copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be 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, EXPRESS OR IMPLIED,
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef LIBRETRO_SDK_TRANS_STREAM_H__
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#define LIBRETRO_SDK_TRANS_STREAM_H__
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#include <stdint.h>
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#include <stddef.h>
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#include <boolean.h>
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#ifdef _WIN32
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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#include <retro_miscellaneous.h>
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#include <retro_common_api.h>
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RETRO_BEGIN_DECLS
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enum trans_stream_error
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{
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TRANS_STREAM_ERROR_NONE = 0,
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TRANS_STREAM_ERROR_AGAIN, /* more work to do */
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TRANS_STREAM_ERROR_ALLOCATION_FAILURE, /* malloc failure */
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TRANS_STREAM_ERROR_INVALID, /* invalid state */
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TRANS_STREAM_ERROR_BUFFER_FULL, /* output buffer full */
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TRANS_STREAM_ERROR_OTHER
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};
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/* Values for the "strategy" property, which selects how a deflate
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* backend trades match searching against Huffman coding. Numerically
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* identical to zlib's Z_* constants, restated here so callers do not
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* have to include zlib.h to pick one. A backend that does not
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* implement strategies returns false from define() and keeps its
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* default behaviour. */
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#define TRANS_STREAM_STRATEGY_DEFAULT 0
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#define TRANS_STREAM_STRATEGY_FILTERED 1
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#define TRANS_STREAM_STRATEGY_HUFFMAN 2
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#define TRANS_STREAM_STRATEGY_RLE 3
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#define TRANS_STREAM_STRATEGY_FIXED 4
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struct trans_stream_backend
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{
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const char *ident;
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const struct trans_stream_backend *reverse;
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/* Create a stream data structure */
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void *(*stream_new)(void);
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/* Free it */
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void (*stream_free)(void *);
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/* (Optional) Set extra properties, defined per transcoder */
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bool (*define)(void *, const char *, uint32_t);
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/* Set our input source */
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void (*set_in)(void *, const uint8_t *, uint32_t);
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/* Set our output target */
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void (*set_out)(void *, uint8_t *, uint32_t);
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/* Perform a transcoding, flushing/finalizing if asked to. Writes out how
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* many bytes were read and written. Error target optional. */
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bool (*trans)(void *, bool, uint32_t *, uint32_t *, enum trans_stream_error *);
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};
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/**
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* trans_stream_trans_full:
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* @backend : transcoding backend
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* @data : (optional) existing stream data, or a target
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* for the new stream data to be saved
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* @in : input data
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* @in_size : input size
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* @out : output data
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* @out_size : output size
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* @error : (optional) output for error code
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*
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* Perform a full transcoding from a source to a destination.
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*/
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bool trans_stream_trans_full(
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struct trans_stream_backend *backend, void **data,
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const uint8_t *in, uint32_t in_size,
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uint8_t *out, uint32_t out_size,
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enum trans_stream_error *error);
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const struct trans_stream_backend* trans_stream_get_zlib_deflate_backend(void);
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const struct trans_stream_backend* trans_stream_get_zlib_inflate_backend(void);
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/* The built-in Zstandard codec, where it is compiled in: one frame per
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* flushed transform. */
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#ifdef HAVE_RZSTD
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const struct trans_stream_backend* trans_stream_get_rzstd_encode_backend(void);
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const struct trans_stream_backend* trans_stream_get_rzstd_decode_backend(void);
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#endif
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const struct trans_stream_backend* trans_stream_get_pipe_backend(void);
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extern const struct trans_stream_backend zlib_deflate_backend;
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extern const struct trans_stream_backend zlib_inflate_backend;
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extern const struct trans_stream_backend pipe_backend;
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/* Clean-room, zlib-free DEFLATE backend (encodings/deflate.c). Always
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* available; used as the fallback compression backend when zlib is not
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* compiled in. */
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const struct trans_stream_backend* trans_stream_get_deflate_deflate_backend(void);
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const struct trans_stream_backend* trans_stream_get_deflate_inflate_backend(void);
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extern const struct trans_stream_backend deflate_deflate_backend;
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extern const struct trans_stream_backend deflate_inflate_backend;
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RETRO_END_DECLS
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#endif
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