mirror of
https://github.com/libretro/RetroArch.git
synced 2024-12-11 18:23:45 +00:00
308 lines
8.1 KiB
C
308 lines
8.1 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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#include "../performance.h"
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#include "dsp_filter.h"
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#include "../dynamic.h"
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#include <file/config_file_userdata.h>
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#include "audio_filters/dspfilter.h"
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#include <file/file_path.h>
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#include "../file_ext.h"
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#include <file/dir_list.h>
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#include <compat/posix_string.h>
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#include <stdlib.h>
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struct rarch_dsp_plug
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{
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#ifdef HAVE_DYLIB
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dylib_t lib;
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#endif
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const struct dspfilter_implementation *impl;
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};
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struct rarch_dsp_instance
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{
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const struct dspfilter_implementation *impl;
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void *impl_data;
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};
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struct rarch_dsp_filter
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{
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config_file_t *conf;
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struct rarch_dsp_plug *plugs;
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unsigned num_plugs;
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struct rarch_dsp_instance *instances;
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unsigned num_instances;
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};
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static const struct dspfilter_implementation *find_implementation(
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rarch_dsp_filter_t *dsp, const char *ident)
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{
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unsigned i;
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for (i = 0; i < dsp->num_plugs; i++)
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{
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if (!strcmp(dsp->plugs[i].impl->short_ident, ident))
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return dsp->plugs[i].impl;
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}
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return NULL;
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}
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static const struct dspfilter_config dspfilter_config = {
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config_userdata_get_float,
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config_userdata_get_int,
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config_userdata_get_float_array,
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config_userdata_get_int_array,
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config_userdata_get_string,
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config_userdata_free,
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};
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static bool create_filter_graph(rarch_dsp_filter_t *dsp, float sample_rate)
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{
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unsigned i;
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unsigned filters = 0;
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if (!config_get_uint(dsp->conf, "filters", &filters))
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return false;
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dsp->instances = (struct rarch_dsp_instance*)
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calloc(filters, sizeof(*dsp->instances));
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if (!dsp->instances)
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return false;
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dsp->num_instances = filters;
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for (i = 0; i < filters; i++)
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{
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char key[64];
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snprintf(key, sizeof(key), "filter%u", i);
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char name[64];
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if (!config_get_array(dsp->conf, key, name, sizeof(name)))
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return false;
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dsp->instances[i].impl = find_implementation(dsp, name);
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if (!dsp->instances[i].impl)
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return false;
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struct config_file_userdata userdata;
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userdata.conf = dsp->conf;
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/* Index-specific configs take priority over ident-specific. */
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userdata.prefix[0] = key;
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userdata.prefix[1] = dsp->instances[i].impl->short_ident;
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struct dspfilter_info info = { sample_rate };
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dsp->instances[i].impl_data = dsp->instances[i].impl->init(&info, &dspfilter_config, &userdata);
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if (!dsp->instances[i].impl_data)
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return false;
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}
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return true;
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}
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#if defined(HAVE_FILTERS_BUILTIN)
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extern const struct dspfilter_implementation *panning_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *iir_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *echo_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *phaser_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *wahwah_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *eq_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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extern const struct dspfilter_implementation *chorus_dspfilter_get_implementation(dspfilter_simd_mask_t mask);
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static const dspfilter_get_implementation_t dsp_plugs_builtin[] = {
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panning_dspfilter_get_implementation,
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iir_dspfilter_get_implementation,
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echo_dspfilter_get_implementation,
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phaser_dspfilter_get_implementation,
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wahwah_dspfilter_get_implementation,
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eq_dspfilter_get_implementation,
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chorus_dspfilter_get_implementation,
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};
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static bool append_plugs(rarch_dsp_filter_t *dsp)
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{
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unsigned i;
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dspfilter_simd_mask_t mask = rarch_get_cpu_features();
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dsp->plugs = (struct rarch_dsp_plug*)
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calloc(ARRAY_SIZE(dsp_plugs_builtin), sizeof(*dsp->plugs));
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if (!dsp->plugs)
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return false;
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dsp->num_plugs = ARRAY_SIZE(dsp_plugs_builtin);
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for (i = 0; i < ARRAY_SIZE(dsp_plugs_builtin); i++)
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{
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dsp->plugs[i].impl = dsp_plugs_builtin[i](mask);
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if (!dsp->plugs[i].impl)
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return false;
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}
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return true;
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}
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#elif defined(HAVE_DYLIB)
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static bool append_plugs(rarch_dsp_filter_t *dsp, struct string_list *list)
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{
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unsigned i;
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dspfilter_simd_mask_t mask = rarch_get_cpu_features();
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for (i = 0; i < list->size; i++)
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{
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dylib_t lib = dylib_load(list->elems[i].data);
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if (!lib)
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continue;
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dspfilter_get_implementation_t cb = (dspfilter_get_implementation_t)
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dylib_proc(lib, "dspfilter_get_implementation");
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if (!cb)
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{
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dylib_close(lib);
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continue;
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}
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const struct dspfilter_implementation *impl = cb(mask);
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if (!impl)
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{
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dylib_close(lib);
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continue;
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}
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if (impl->api_version != DSPFILTER_API_VERSION)
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{
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dylib_close(lib);
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continue;
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}
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struct rarch_dsp_plug *new_plugs = (struct rarch_dsp_plug*)
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realloc(dsp->plugs, sizeof(*dsp->plugs) * (dsp->num_plugs + 1));
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if (!new_plugs)
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{
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dylib_close(lib);
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return false;
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}
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RARCH_LOG("[DSP]: Found plug: %s (%s).\n", impl->ident, impl->short_ident);
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dsp->plugs = new_plugs;
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dsp->plugs[dsp->num_plugs].lib = lib;
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dsp->plugs[dsp->num_plugs].impl = impl;
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dsp->num_plugs++;
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}
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return true;
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}
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#endif
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rarch_dsp_filter_t *rarch_dsp_filter_new(
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const char *filter_config, float sample_rate)
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{
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#if !defined(HAVE_FILTERS_BUILTIN) && defined(HAVE_DYLIB)
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char basedir[PATH_MAX];
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#endif
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struct string_list *plugs = NULL;
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rarch_dsp_filter_t *dsp = (rarch_dsp_filter_t*)calloc(1, sizeof(*dsp));
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if (!dsp)
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return NULL;
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dsp->conf = config_file_new(filter_config);
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if (!dsp->conf)
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{
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RARCH_ERR("[DSP]: Did not find config: %s\n", filter_config);
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goto error;
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}
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#if defined(HAVE_FILTERS_BUILTIN)
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if (!append_plugs(dsp))
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goto error;
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#elif defined(HAVE_DYLIB)
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fill_pathname_basedir(basedir, filter_config, sizeof(basedir));
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plugs = dir_list_new(basedir, EXT_EXECUTABLES, false);
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if (!plugs)
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goto error;
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if (!append_plugs(dsp, plugs))
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goto error;
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string_list_free(plugs);
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plugs = NULL;
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#endif
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if (!create_filter_graph(dsp, sample_rate))
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goto error;
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return dsp;
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error:
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string_list_free(plugs);
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rarch_dsp_filter_free(dsp);
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return NULL;
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}
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void rarch_dsp_filter_free(rarch_dsp_filter_t *dsp)
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{
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unsigned i;
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if (!dsp)
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return;
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for (i = 0; i < dsp->num_instances; i++)
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{
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if (dsp->instances[i].impl_data && dsp->instances[i].impl)
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dsp->instances[i].impl->free(dsp->instances[i].impl_data);
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}
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free(dsp->instances);
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#ifdef HAVE_DYLIB
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for (i = 0; i < dsp->num_plugs; i++)
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{
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if (dsp->plugs[i].lib)
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dylib_close(dsp->plugs[i].lib);
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}
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free(dsp->plugs);
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#endif
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if (dsp->conf)
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config_file_free(dsp->conf);
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free(dsp);
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}
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void rarch_dsp_filter_process(rarch_dsp_filter_t *dsp,
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struct rarch_dsp_data *data)
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{
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unsigned i;
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struct dspfilter_output output = {0};
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struct dspfilter_input input = {0};
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output.samples = data->input;
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output.frames = data->input_frames;
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for (i = 0; i < dsp->num_instances; i++)
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{
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input.samples = output.samples;
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input.frames = output.frames;
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dsp->instances[i].impl->process(
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dsp->instances[i].impl_data, &output, &input);
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}
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data->output = output.samples;
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data->output_frames = output.frames;
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}
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