mirror of
https://github.com/CTCaer/RetroArch.git
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128 lines
4.9 KiB
C
128 lines
4.9 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef SOFTFILTER_API_H__
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#define SOFTFILTER_API_H__
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#include <stdint.h>
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SOFTFILTER_SIMD_SSE (1 << 0)
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#define SOFTFILTER_SIMD_SSE2 (1 << 1)
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#define SOFTFILTER_SIMD_VMX (1 << 2)
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#define SOFTFILTER_SIMD_VMX128 (1 << 3)
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#define SOFTFILTER_SIMD_AVX (1 << 4)
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#define SOFTFILTER_SIMD_NEON (1 << 5)
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#define SOFTFILTER_SIMD_SSE3 (1 << 6)
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#define SOFTFILTER_SIMD_SSSE3 (1 << 7)
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#define SOFTFILTER_SIMD_MMX (1 << 8)
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#define SOFTFILTER_SIMD_MMXEXT (1 << 9)
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#define SOFTFILTER_SIMD_SSE4 (1 << 10)
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#define SOFTFILTER_SIMD_SSE42 (1 << 11)
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#define SOFTFILTER_SIMD_AVX2 (1 << 12)
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#define SOFTFILTER_SIMD_VFPU (1 << 13)
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#define SOFTFILTER_SIMD_PS (1 << 14)
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// A bit-mask of all supported SIMD instruction sets.
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// Allows an implementation to pick different softfilter_implementation structs.
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typedef unsigned softfilter_simd_mask_t;
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// Dynamic library entrypoint.
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typedef const struct softfilter_implementation *(*softfilter_get_implementation_t)(softfilter_simd_mask_t);
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// The same SIMD mask argument is forwarded to create() callback as well to avoid having to keep lots of state around.
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const struct softfilter_implementation *softfilter_get_implementation(softfilter_simd_mask_t simd);
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#define SOFTFILTER_API_VERSION 1
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// Required base color formats
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#define SOFTFILTER_FMT_NONE 0
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#define SOFTFILTER_FMT_RGB565 (1 << 0)
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#define SOFTFILTER_FMT_XRGB8888 (1 << 1)
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// Optional color formats
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#define SOFTFILTER_FMT_RGB4444 (1 << 2)
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#define SOFTFILTER_BPP_RGB565 2
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#define SOFTFILTER_BPP_XRGB8888 4
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// Softfilter implementation.
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// Returns a bitmask of supported input formats.
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typedef unsigned (*softfilter_query_input_formats_t)(void);
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// Returns a bitmask of supported output formats for a given input format.
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typedef unsigned (*softfilter_query_output_formats_t)(unsigned input_format);
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// In softfilter_process_t, the softfilter implementation submits work units to a worker thread pool.
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typedef void (*softfilter_work_t)(void *data, void *thread_data);
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struct softfilter_work_packet
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{
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softfilter_work_t work;
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void *thread_data;
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};
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// Create a filter with given input and output formats as well as maximum possible input size.
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// Input sizes can very per call to softfilter_process_t, but they will never be larger than the maximum.
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typedef void *(*softfilter_create_t)(unsigned in_fmt, unsigned out_fmt,
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unsigned max_width, unsigned max_height,
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unsigned threads, softfilter_simd_mask_t simd);
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typedef void (*softfilter_destroy_t)(void *data);
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// Given an input size, query the output size of the filter.
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// If width and height == max_width/max_height, no other combination of width/height must return a larger size in any dimension.
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typedef void (*softfilter_query_output_size_t)(void *data,
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unsigned *out_width, unsigned *out_height,
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unsigned width, unsigned height);
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// First step of processing a frame. The filter submits work by filling in the packets array.
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// The number of elements in the array is as returned by query_num_threads.
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// The processing itself happens in worker threads after this returns.
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typedef void (*softfilter_get_work_packets_t)(void *data,
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struct softfilter_work_packet *packets,
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void *output, size_t output_stride,
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const void *input, unsigned width, unsigned height, size_t input_stride);
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// Returns the number of worker threads the filter will use.
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// This can differ from the value passed to create() instead the filter cannot be parallelized, etc. The number of threads must be less-or-equal compared to the value passed to create().
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typedef unsigned (*softfilter_query_num_threads_t)(void *data);
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/////
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struct softfilter_implementation
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{
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softfilter_query_input_formats_t query_input_formats;
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softfilter_query_output_formats_t query_output_formats;
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softfilter_create_t create;
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softfilter_destroy_t destroy;
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softfilter_query_num_threads_t query_num_threads;
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softfilter_query_output_size_t query_output_size;
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softfilter_get_work_packets_t get_work_packets;
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const char *ident; // Human readable identifier of implementation.
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unsigned api_version; // Must be SOFTFILTER_API_VERSION
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};
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#ifdef __cplusplus
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}
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#endif
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#endif
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