pulseaudio integration

inc/paper.h

@@ -20,6 +20,7 @@
 
 #include <stdint.h>
 
-void paper_init(char* monitor, char* frag_path, uint16_t fps, char* layer_name, uint16_t width, uint16_t height);
+void paper_init(char *monitor, char *frag_path, char *pa_src, uint16_t fps,
+                char *layer_name, uint16_t width, uint16_t height);
 
 #endif

inc/pulsefft.h

@@ -0,0 +1,72 @@
+#ifndef _PULSEFFT_H
+#define _PULSEFFT_H
+
+#include <complex.h>
+#include <errno.h>
+#include <pthread.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <tgmath.h>
+#include <unistd.h>
+
+#include <pulse/error.h>
+#include <pulse/pulseaudio.h>
+#include <pulse/simple.h>
+
+#include <fftw3.h>
+
+typedef struct pa_fft {
+  pthread_t thread;
+  int cont;
+
+  // Pulseaudio
+  pa_simple *s;
+  char *dev;
+  unsigned int rate;
+  int error;
+  pa_sample_spec ss;
+  pa_channel_map map;
+
+  // Buffers
+  unsigned int samples;
+
+  double *pa_buff_l;
+  double *pa_buff_r;
+  size_t pa_buff_size;
+  unsigned int pa_samples;
+
+  double *fft_buff;
+  double *fft_buff_l;
+  double *fft_buff_r;
+  size_t fft_buff_size;
+  unsigned int fft_samples;
+
+  // Output buffers
+  float *pa_output;
+  size_t pa_output_size;
+
+  float *fft_output;
+  size_t fft_output_size;
+
+  // FFTW
+  fftw_complex *output_l;
+  fftw_complex *output_r;
+  size_t output_size;
+  unsigned int output_samples;
+  fftw_plan plan_l;
+  fftw_plan plan_r;
+} pa_fft;
+
+void separate_freq_bands(double *out, fftw_complex *in, int n, int *lcf,
+                         int *hcf, float *k, double sensitivity,
+                         int in_samples);
+void *pa_fft_thread(void *arg);
+void get_pulse_default_sink(pa_fft *pa_fft);
+void init_pulse(pa_fft *pa_fft);
+void init_buffers(pa_fft *pa_fft);
+void init_fft(pa_fft *pa_fft);
+void deinit_fft(pa_fft *pa_fft);
+
+#endif // _PULSEFFT_H