mirror of
https://github.com/libretro/RetroArch.git
synced 2024-10-11 08:34:23 +00:00
398 lines
10 KiB
C
398 lines
10 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 "../general.h"
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#include "dsp_filter.h"
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#include "../dynamic.h"
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#include "../conf/config_file.h"
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#include "filters/dspfilter.h"
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#include "../file_path.h"
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#include "../file_ext.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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const struct dspfilter_implementation *find_implementation(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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struct dsp_userdata
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{
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config_file_t *conf;
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const char *prefix[2];
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};
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static int get_float(void *userdata, const char *key_str, float *value, float default_value)
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{
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struct dsp_userdata *dsp = (struct dsp_userdata*)userdata;
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char key[2][256];
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snprintf(key[0], sizeof(key[0]), "%s_%s", dsp->prefix[0], key_str);
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snprintf(key[1], sizeof(key[1]), "%s_%s", dsp->prefix[1], key_str);
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bool got = config_get_float(dsp->conf, key[0], value);
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got = got || config_get_float(dsp->conf, key[1], value);
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if (!got)
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*value = default_value;
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return got;
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}
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static int get_int(void *userdata, const char *key_str, int *value, int default_value)
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{
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struct dsp_userdata *dsp = (struct dsp_userdata*)userdata;
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char key[2][256];
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snprintf(key[0], sizeof(key[0]), "%s_%s", dsp->prefix[0], key_str);
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snprintf(key[1], sizeof(key[1]), "%s_%s", dsp->prefix[1], key_str);
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bool got = config_get_int(dsp->conf, key[0], value);
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got = got || config_get_int(dsp->conf, key[1], value);
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if (!got)
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*value = default_value;
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return got;
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}
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// Yup, still C >__<
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#define get_array_setup() \
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struct dsp_userdata *dsp = (struct dsp_userdata*)userdata; \
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\
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char key[2][256]; \
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snprintf(key[0], sizeof(key[0]), "%s_%s", dsp->prefix[0], key_str); \
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snprintf(key[1], sizeof(key[1]), "%s_%s", dsp->prefix[1], key_str); \
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\
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char *str = NULL; \
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bool got = config_get_string(dsp->conf, key[0], &str); \
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got = got || config_get_string(dsp->conf, key[1], &str);
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#define get_array_body(T) \
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if (got) \
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{ \
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unsigned i; \
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struct string_list *list = string_split(str, " "); \
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*values = (T*)calloc(list->size, sizeof(T)); \
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for (i = 0; i < list->size; i++) \
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(*values)[i] = (T)strtod(list->elems[i].data, NULL); \
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*out_num_values = list->size; \
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string_list_free(list); \
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return true; \
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} \
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else \
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{ \
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*values = (T*)calloc(num_default_values, sizeof(T)); \
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memcpy(*values, default_values, sizeof(T) * num_default_values); \
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*out_num_values = num_default_values; \
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return false; \
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}
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static int get_float_array(void *userdata, const char *key_str,
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float **values, unsigned *out_num_values,
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const float *default_values, unsigned num_default_values)
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{
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get_array_setup()
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get_array_body(float)
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}
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static int get_int_array(void *userdata, const char *key_str,
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int **values, unsigned *out_num_values,
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const int *default_values, unsigned num_default_values)
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{
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get_array_setup()
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get_array_body(int)
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}
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static int get_string(void *userdata, const char *key_str,
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char **output, const char *default_output)
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{
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get_array_setup()
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if (got)
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{
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*output = str;
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return true;
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}
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else
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{
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*output = strdup(default_output);
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return false;
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}
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}
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static void dspfilter_free(void *ptr)
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{
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free(ptr);
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}
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static const struct dspfilter_config dspfilter_config = {
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get_float,
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get_int,
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get_float_array,
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get_int_array,
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get_string,
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dspfilter_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*)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 dsp_userdata userdata;
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userdata.conf = dsp->conf;
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userdata.prefix[0] = key; // Index-specific configs take priority over ident-specific.
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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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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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};
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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*)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)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*)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(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, 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(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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