643 lines
22 KiB
C
643 lines
22 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <pthread.h>
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#include <sys/select.h>
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#include <sys/time.h>
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#include <json-c/json.h>
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#include <pulse/simple.h>
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#include <sndfile.h>
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#include <pulse/error.h>
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#include <libgen.h> // For dirname
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#define MAX_LINE_LENGTH 1024
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#define MAX_CONCURRENT_SOUNDS 10
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typedef struct {
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int start_ms;
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int duration_ms;
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} SoundMapping;
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typedef struct {
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char press_file[256]; // used in multi mode
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char release_file[256]; // used in multi mode
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char generic_press_files[5][256]; // max 5 files GENERIC_R0..R4
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int num_generic_press_files;
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char sound_file[256]; // used in single mode
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SoundMapping key_mappings[256]; // only for 'single' mode
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struct {
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char *press;
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char *release;
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} multi_key_mappings[256];
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int is_multi;
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SF_INFO sf_info;
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} SoundPack;
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typedef struct {
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int key_code;
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SoundPack *sound_pack;
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int thread_id;
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int is_pressed;
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} PlaybackData;
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// Global sound pack
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SoundPack g_sound_pack = {0};
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float g_volume = 1.0f;
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int g_verbose = 0;
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// Thread pool for sound playback
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pthread_t sound_threads[MAX_CONCURRENT_SOUNDS];
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volatile int thread_active[MAX_CONCURRENT_SOUNDS] = {0};
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pthread_mutex_t thread_mutex = PTHREAD_MUTEX_INITIALIZER;
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// Function to construct a full path
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static void get_full_path(char *buffer, size_t buffer_size, const char *base_dir, const char *filename) {
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if (filename == NULL || base_dir == NULL) {
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buffer[0] = '\0';
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return;
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}
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// Check if filename is already an absolute path
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if (filename[0] == '/') {
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strncpy(buffer, filename, buffer_size - 1);
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buffer[buffer_size - 1] = '\0';
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} else {
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snprintf(buffer, buffer_size, "%s/%s", base_dir, filename);
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}
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}
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int load_sound_config(const char *config_path) {
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FILE *file = fopen(config_path, "r");
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if (!file) {
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fprintf(stderr, "Error: Cannot open config file: %s\n", config_path);
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perror("fopen");
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return -1;
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}
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// Extract the directory of the config file
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char config_path_copy[MAX_LINE_LENGTH]; // Use a copy because dirname can modify its argument
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strncpy(config_path_copy, config_path, sizeof(config_path_copy) - 1);
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config_path_copy[sizeof(config_path_copy) - 1] = '\0';
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char *config_dir = dirname(config_path_copy);
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fseek(file, 0, SEEK_END);
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long size = ftell(file);
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rewind(file);
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char *json_string = malloc(size + 1);
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if (!json_string) {
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fclose(file);
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fprintf(stderr, "Error: Memory allocation failed\n");
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return -1;
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}
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fread(json_string, 1, size, file);
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json_string[size] = '\0';
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fclose(file);
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json_object *root = json_tokener_parse(json_string);
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free(json_string);
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if (!root) {
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fprintf(stderr, "Error: Invalid JSON in config file\n");
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return -1;
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}
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const char *key_type = "single";
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json_object *obj;
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if (json_object_object_get_ex(root, "key_define_type", &obj))
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key_type = json_object_get_string(obj);
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g_sound_pack.is_multi = strcmp(key_type, "multi") == 0;
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printf("Config loaded: Using %s mode\n", g_sound_pack.is_multi ? "multi" : "single");
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if (g_sound_pack.is_multi) {
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// Reset counter
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g_sound_pack.num_generic_press_files = 0;
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if (json_object_object_get_ex(root, "sound", &obj)) {
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const char *pattern = json_object_get_string(obj);
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printf("Sound pattern: %s\n", pattern);
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// Check if pattern contains format specifier
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if (strstr(pattern, "%d") || strstr(pattern, "{")) {
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// Handle patterns like "GENERIC_R%d.mp3" or "GENERIC_R{0-4}.mp3"
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for (int i = 0; i <= 4; i++) {
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char temp_filename[256];
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if (strstr(pattern, "{")) {
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// Replace {0-4} with actual number
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char temp_pattern[256];
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strncpy(temp_pattern, pattern, sizeof(temp_pattern) - 1);
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temp_pattern[sizeof(temp_pattern) - 1] = '\0';
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// Simple replacement of {0-4} with %d
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char *brace_start = strstr(temp_pattern, "{");
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char *brace_end = strstr(temp_pattern, "}");
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if (brace_start && brace_end) {
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*brace_start = '%';
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*(brace_start + 1) = 'd';
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memmove(brace_start + 2, brace_end + 1, strlen(brace_end + 1) + 1);
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}
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snprintf(temp_filename, sizeof(temp_filename), temp_pattern, i);
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} else {
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snprintf(temp_filename, sizeof(temp_filename), pattern, i);
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}
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// Construct the full path using the config directory
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get_full_path(g_sound_pack.generic_press_files[i], sizeof(g_sound_pack.generic_press_files[i]), config_dir, temp_filename);
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// Check if file exists before adding to count
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if (access(g_sound_pack.generic_press_files[i], R_OK) == 0) {
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g_sound_pack.num_generic_press_files = i + 1; // Keep track of highest valid index + 1
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// printf("Found generic sound file: %s\n", g_sound_pack.generic_press_files[i]);
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} else {
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printf("Generic sound file not found: %s\n", g_sound_pack.generic_press_files[i]);
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break; // Stop at first missing file
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}
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}
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} else {
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// Direct filename, no pattern
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get_full_path(g_sound_pack.generic_press_files[0], sizeof(g_sound_pack.generic_press_files[0]), config_dir, pattern);
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if (access(g_sound_pack.generic_press_files[0], R_OK) == 0) {
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g_sound_pack.num_generic_press_files = 1;
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printf("Found single generic sound file: %s\n", g_sound_pack.generic_press_files[0]);
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}
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}
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printf("Total generic press sound files: %d\n", g_sound_pack.num_generic_press_files);
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}
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if (json_object_object_get_ex(root, "soundup", &obj)) {
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char temp_release_file[256];
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strncpy(temp_release_file, json_object_get_string(obj), sizeof(temp_release_file) - 1);
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temp_release_file[sizeof(temp_release_file) - 1] = '\0';
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get_full_path(g_sound_pack.release_file, sizeof(g_sound_pack.release_file), config_dir, temp_release_file);
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printf("Release sound file: %s\n", g_sound_pack.release_file);
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}
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if (json_object_object_get_ex(root, "defines", &obj)) {
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// printf("Processing key definitions...\n");
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json_object_object_foreach(obj, key, val) {
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int key_code;
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int is_release = 0;
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char *dash = strstr(key, "-up");
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if (dash) {
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char key_copy[16];
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strncpy(key_copy, key, dash - key);
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key_copy[dash - key] = '\0';
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key_code = atoi(key_copy);
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is_release = 1;
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} else {
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key_code = atoi(key);
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}
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if (key_code >= 0 && key_code < 256) {
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const char *filename_relative = json_object_get_string(val);
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char full_filename[MAX_LINE_LENGTH];
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get_full_path(full_filename, sizeof(full_filename), config_dir, filename_relative);
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// printf("Key %d (%s): %s (full path: %s)\n", key_code, is_release ? "release" : "press", filename_relative, full_filename);
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if (is_release) {
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if (g_sound_pack.multi_key_mappings[key_code].release) {
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free(g_sound_pack.multi_key_mappings[key_code].release);
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}
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g_sound_pack.multi_key_mappings[key_code].release = strdup(full_filename);
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} else {
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if (g_sound_pack.multi_key_mappings[key_code].press) {
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free(g_sound_pack.multi_key_mappings[key_code].press);
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}
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g_sound_pack.multi_key_mappings[key_code].press = strdup(full_filename);
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}
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}
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}
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}
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} else { // Single mode
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if (json_object_object_get_ex(root, "sound", &obj)) {
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char temp_sound_file[256];
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strncpy(temp_sound_file, json_object_get_string(obj), sizeof(temp_sound_file) - 1);
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temp_sound_file[sizeof(temp_sound_file) - 1] = '\0';
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get_full_path(g_sound_pack.sound_file, sizeof(g_sound_pack.sound_file), config_dir, temp_sound_file);
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printf("Single mode sound file: %s\n", g_sound_pack.sound_file);
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}
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if (json_object_object_get_ex(root, "defines", &obj)) {
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json_object_object_foreach(obj, key, val) {
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int key_code = atoi(key);
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if (key_code >= 0 && key_code < 256 &&
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json_object_is_type(val, json_type_array) &&
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json_object_array_length(val) >= 2) {
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g_sound_pack.key_mappings[key_code].start_ms = json_object_get_int(json_object_array_get_idx(val, 0));
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g_sound_pack.key_mappings[key_code].duration_ms = json_object_get_int(json_object_array_get_idx(val, 1));
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}
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}
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}
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}
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json_object_put(root);
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return 0;
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}
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int init_audio() {
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// For multi mode, we don't need to check a single sound file
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if (g_sound_pack.is_multi) {
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// printf("Multi mode: Audio will be initialized per sound file\n");
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return 0;
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}
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// For single mode, check the main sound file
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if (strlen(g_sound_pack.sound_file) == 0) {
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fprintf(stderr, "Error: No sound file specified in config\n");
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return -1;
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}
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if (access(g_sound_pack.sound_file, R_OK) != 0) {
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fprintf(stderr, "Sound file not accessible: %s\n", g_sound_pack.sound_file);
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perror("access");
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return -1;
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}
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// Test open sound file to get info
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SNDFILE *test_sf = sf_open(g_sound_pack.sound_file, SFM_READ, &g_sound_pack.sf_info);
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if (!test_sf) {
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fprintf(stderr, "Could not open sound file: %s\n", g_sound_pack.sound_file);
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fprintf(stderr, "libsndfile error: %s\n", sf_strerror(NULL));
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return -1;
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}
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sf_close(test_sf);
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printf("Sound file info: %ld frames, %d channels, %d Hz\n",
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g_sound_pack.sf_info.frames, g_sound_pack.sf_info.channels, g_sound_pack.sf_info.samplerate);
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return 0;
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}
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void* play_sound_thread(void* arg) {
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PlaybackData *data = (PlaybackData*)arg;
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int key_code = data->key_code;
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int thread_id = data->thread_id;
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int is_pressed = data->is_pressed;
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const char *file_to_play = NULL;
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if (g_verbose) {
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printf("Thread %d: Playing sound for key %d (%s)\n",
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thread_id, key_code, is_pressed ? "press" : "release");
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}
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if (g_sound_pack.is_multi) {
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// First try exact match
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if (is_pressed && g_sound_pack.multi_key_mappings[key_code].press) {
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file_to_play = g_sound_pack.multi_key_mappings[key_code].press;
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} else if (!is_pressed && g_sound_pack.multi_key_mappings[key_code].release) {
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file_to_play = g_sound_pack.multi_key_mappings[key_code].release;
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} else if (is_pressed && g_sound_pack.num_generic_press_files > 0) {
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// Fallback: random generic press
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int idx = rand() % g_sound_pack.num_generic_press_files;
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file_to_play = g_sound_pack.generic_press_files[idx];
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} else if (!is_pressed && strlen(g_sound_pack.release_file) > 0) {
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file_to_play = g_sound_pack.release_file;
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}
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if (!file_to_play) {
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if (g_verbose) {
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printf("Thread %d: No sound file found for key %d (%s)\n",
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thread_id, key_code, is_pressed ? "press" : "release");
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}
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goto exit_cleanup;
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}
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if (g_verbose) {
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printf("Thread %d: Using sound file: %s\n", thread_id, file_to_play);
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}
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SF_INFO sf_info = {0};
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SNDFILE *sf = sf_open(file_to_play, SFM_READ, &sf_info);
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if (!sf) {
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fprintf(stderr, "Could not open sound file: %s (Error: %s)\n",
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file_to_play, sf_strerror(NULL));
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goto exit_cleanup;
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}
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pa_sample_spec ss = {
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.format = PA_SAMPLE_S16LE,
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.rate = sf_info.samplerate,
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.channels = sf_info.channels
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};
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int pa_error;
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pa_simple *pa_handle = pa_simple_new(NULL, "KeyboardSounds", PA_STREAM_PLAYBACK,
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NULL, "playback", &ss, NULL, NULL, &pa_error);
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if (!pa_handle) {
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fprintf(stderr, "Could not initialize PulseAudio: %s\n", pa_strerror(pa_error));
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sf_close(sf);
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goto exit_cleanup;
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}
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int frames = 2048;
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short *buffer = malloc(frames * sf_info.channels * sizeof(short));
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if (!buffer) {
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pa_simple_free(pa_handle);
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sf_close(sf);
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goto exit_cleanup;
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}
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sf_count_t read;
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while ((read = sf_readf_short(sf, buffer, frames)) > 0) {
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for (sf_count_t i = 0; i < read * sf_info.channels; i++) {
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buffer[i] = (short)(buffer[i] * g_volume);
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}
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int pa_write_error;
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if (pa_simple_write(pa_handle, buffer, read * sf_info.channels * sizeof(short), &pa_write_error) < 0) {
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fprintf(stderr, "PulseAudio write error: %s\n", pa_strerror(pa_write_error));
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break;
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}
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}
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int pa_drain_error;
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pa_simple_drain(pa_handle, &pa_drain_error);
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pa_simple_free(pa_handle);
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sf_close(sf);
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free(buffer);
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} else {
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if (key_code >= 256 || g_sound_pack.key_mappings[key_code].duration_ms == 0) {
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if (g_verbose) {
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printf("Thread %d: No mapping for key %d\n", thread_id, key_code);
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}
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goto exit_cleanup;
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}
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SoundMapping *mapping = &g_sound_pack.key_mappings[key_code];
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SF_INFO sf_info = g_sound_pack.sf_info;
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SNDFILE *sf = sf_open(g_sound_pack.sound_file, SFM_READ, &sf_info);
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if (!sf) {
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fprintf(stderr, "Thread: Could not open sound file\n");
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goto exit_cleanup;
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}
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pa_sample_spec ss = {
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.format = PA_SAMPLE_S16LE,
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.rate = sf_info.samplerate,
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.channels = sf_info.channels
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};
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int pa_error;
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pa_simple *pa_handle = pa_simple_new(NULL, "KeyboardSounds", PA_STREAM_PLAYBACK,
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NULL, "playback", &ss, NULL, NULL, &pa_error);
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if (!pa_handle) {
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sf_close(sf);
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fprintf(stderr, "Thread: Could not initialize PulseAudio: %s\n", pa_strerror(pa_error));
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goto exit_cleanup;
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}
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sf_count_t start_frame = (mapping->start_ms * sf_info.samplerate) / 1000;
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sf_count_t duration_frames = (mapping->duration_ms * sf_info.samplerate) / 1000;
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sf_seek(sf, start_frame, SEEK_SET);
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short *buffer = malloc(duration_frames * sf_info.channels * sizeof(short));
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if (!buffer) {
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pa_simple_free(pa_handle);
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sf_close(sf);
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goto exit_cleanup;
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}
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sf_count_t frames_read = sf_readf_short(sf, buffer, duration_frames);
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for (sf_count_t i = 0; i < frames_read * sf_info.channels; i++) {
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buffer[i] = (short)(buffer[i] * g_volume);
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}
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int pa_write_error, pa_drain_error;
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pa_simple_write(pa_handle, buffer, frames_read * sf_info.channels * sizeof(short), &pa_write_error);
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pa_simple_drain(pa_handle, &pa_drain_error);
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free(buffer);
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pa_simple_free(pa_handle);
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sf_close(sf);
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}
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exit_cleanup:
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pthread_mutex_lock(&thread_mutex);
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thread_active[thread_id] = 0;
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pthread_mutex_unlock(&thread_mutex);
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free(data);
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return NULL;
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}
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int find_available_thread_slot() {
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pthread_mutex_lock(&thread_mutex);
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// Find available slot
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for (int i = 0; i < MAX_CONCURRENT_SOUNDS; i++) {
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if (!thread_active[i]) {
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pthread_mutex_unlock(&thread_mutex);
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return i;
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}
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}
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pthread_mutex_unlock(&thread_mutex);
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return -1; // No available slots
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}
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void play_sound_segment(int key_code, int is_pressed) {
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// Only play sound on key press in single mode
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if (!g_sound_pack.is_multi && !is_pressed) {
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if (g_verbose) {
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printf("Single mode: Ignoring key release for key %d\n", key_code);
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}
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return;
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}
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int slot = find_available_thread_slot();
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if (slot == -1) {
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if (g_verbose) {
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printf("Warning: No available thread slots\n");
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}
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return;
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}
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|
PlaybackData *data = malloc(sizeof(PlaybackData));
|
|
if (!data) return;
|
|
|
|
data->key_code = key_code;
|
|
data->sound_pack = &g_sound_pack;
|
|
data->thread_id = slot;
|
|
data->is_pressed = is_pressed;
|
|
|
|
pthread_mutex_lock(&thread_mutex);
|
|
thread_active[slot] = 1;
|
|
|
|
if (pthread_create(&sound_threads[slot], NULL, play_sound_thread, data) != 0) {
|
|
thread_active[slot] = 0;
|
|
free(data);
|
|
fprintf(stderr, "Failed to create sound thread\n");
|
|
} else {
|
|
pthread_detach(sound_threads[slot]);
|
|
}
|
|
|
|
pthread_mutex_unlock(&thread_mutex);
|
|
}
|
|
|
|
int parse_keyboard_event(const char *json_line, int *key_code, int *is_pressed) {
|
|
// Strip newline if present
|
|
char *line_copy = strdup(json_line);
|
|
if (!line_copy) return -1;
|
|
|
|
char *newline = strchr(line_copy, '\n');
|
|
if (newline) *newline = '\0';
|
|
|
|
if (g_verbose) {
|
|
printf("Parsing JSON: %s\n", line_copy);
|
|
}
|
|
|
|
json_object *root = json_tokener_parse(line_copy);
|
|
free(line_copy);
|
|
|
|
if (!root) {
|
|
fprintf(stderr, "Failed to parse JSON: %s\n", json_line);
|
|
return -1;
|
|
}
|
|
|
|
json_object *key_code_obj, *state_code_obj;
|
|
|
|
if (json_object_object_get_ex(root, "key_code", &key_code_obj) &&
|
|
json_object_object_get_ex(root, "state_code", &state_code_obj)) {
|
|
|
|
*key_code = json_object_get_int(key_code_obj);
|
|
*is_pressed = json_object_get_int(state_code_obj);
|
|
|
|
if (g_verbose) {
|
|
printf("Parsed key event: key_code=%d, is_pressed=%d\n", *key_code, *is_pressed);
|
|
}
|
|
|
|
json_object_put(root);
|
|
return 0;
|
|
}
|
|
|
|
json_object_put(root);
|
|
return -1;
|
|
}
|
|
|
|
void cleanup() {
|
|
printf("Cleaning up...\n");
|
|
|
|
// Give threads a moment to finish naturally
|
|
usleep(500000); // 500ms
|
|
|
|
// Free dynamically allocated filenames in multi config
|
|
for (int i = 0; i < 256; i++) {
|
|
if (g_sound_pack.multi_key_mappings[i].press) {
|
|
free(g_sound_pack.multi_key_mappings[i].press);
|
|
g_sound_pack.multi_key_mappings[i].press = NULL;
|
|
}
|
|
if (g_sound_pack.multi_key_mappings[i].release) {
|
|
free(g_sound_pack.multi_key_mappings[i].release);
|
|
g_sound_pack.multi_key_mappings[i].release = NULL;
|
|
}
|
|
}
|
|
|
|
// Reset thread state
|
|
pthread_mutex_lock(&thread_mutex);
|
|
for (int i = 0; i < MAX_CONCURRENT_SOUNDS; i++) {
|
|
thread_active[i] = 0;
|
|
}
|
|
pthread_mutex_unlock(&thread_mutex);
|
|
}
|
|
|
|
int main(int argc, char *argv[]) {
|
|
if (argc < 2 || argc > 4) {
|
|
fprintf(stderr, "Usage: %s <config.json> [volume] [verbose]\n", argv[0]);
|
|
fprintf(stderr, " volume: 0-100 (default: 50)\n");
|
|
fprintf(stderr, " verbose: 1 to enable verbose output (default: 0)\n");
|
|
return 1;
|
|
}
|
|
|
|
// Set volume
|
|
if (argc >= 3) {
|
|
int volume_percent = atoi(argv[2]);
|
|
if (volume_percent < 0) volume_percent = 0;
|
|
if (volume_percent > 100) volume_percent = 100;
|
|
g_volume = volume_percent / 100.0f;
|
|
printf("Volume set to: %d%%\n", volume_percent);
|
|
} else {
|
|
printf("Volume set to: 50%% (default)\n");
|
|
}
|
|
|
|
// Set verbose mode
|
|
if (argc >= 4) {
|
|
g_verbose = atoi(argv[3]);
|
|
if (g_verbose) {
|
|
printf("Verbose mode enabled\n");
|
|
}
|
|
}
|
|
|
|
// Load sound configuration
|
|
if (load_sound_config(argv[1]) != 0) {
|
|
fprintf(stderr, "Failed to load sound configuration\n");
|
|
return 1;
|
|
}
|
|
|
|
// Initialize audio
|
|
if (init_audio() != 0) {
|
|
fprintf(stderr, "Failed to initialize audio\n");
|
|
return 1;
|
|
}
|
|
|
|
// printf("Keyboard sound player initialized. Listening for key events...\n");
|
|
// printf("Max concurrent sounds: %d\n", MAX_CONCURRENT_SOUNDS);
|
|
// printf("Waiting for input on stdin...\n");
|
|
// fflush(stdout);
|
|
|
|
// Add timeout for debugging
|
|
fd_set readfds;
|
|
struct timeval timeout;
|
|
|
|
// Read JSON lines from stdin with timeout
|
|
char line[MAX_LINE_LENGTH];
|
|
while (1) {
|
|
FD_ZERO(&readfds);
|
|
FD_SET(STDIN_FILENO, &readfds);
|
|
|
|
timeout.tv_sec = 1; // 1 second timeout
|
|
timeout.tv_usec = 0;
|
|
|
|
int ready = select(STDIN_FILENO + 1, &readfds, NULL, NULL, &timeout);
|
|
|
|
if (ready == -1) {
|
|
perror("select");
|
|
break;
|
|
} else if (ready == 0) {
|
|
// Timeout - continue waiting
|
|
if (g_verbose) {
|
|
printf("Waiting for input...\n");
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (FD_ISSET(STDIN_FILENO, &readfds)) {
|
|
if (fgets(line, sizeof(line), stdin) == NULL) {
|
|
if (feof(stdin)) {
|
|
printf("EOF reached on stdin\n");
|
|
} else {
|
|
perror("fgets");
|
|
}
|
|
break;
|
|
}
|
|
|
|
int key_code, is_pressed;
|
|
if (parse_keyboard_event(line, &key_code, &is_pressed) == 0) {
|
|
play_sound_segment(key_code, is_pressed);
|
|
}
|
|
}
|
|
}
|
|
|
|
cleanup();
|
|
return 0;
|
|
}
|