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-rw-r--r--src/global_objects.c72
-rwxr-xr-xsrc/main.c107
-rwxr-xr-xsrc/objects.c122
-rwxr-xr-xsrc/objects.h52
-rw-r--r--src/pipe.c239
5 files changed, 592 insertions, 0 deletions
diff --git a/src/global_objects.c b/src/global_objects.c
new file mode 100644
index 0000000..2e3f2fd
--- /dev/null
+++ b/src/global_objects.c
@@ -0,0 +1,72 @@
+#ifndef global_objects
+#define global_objects
+
+#include <math.h>
+#include <stdlib.h>
+
+#define flaot float
+
+typedef struct {
+ float x;
+ float y;
+} Point;
+
+void point_add(Point *A, Point *B){
+ A->x = A->x + B->x;
+ A->y = A->y + B->y;
+}
+
+void point_sub(Point *A, Point *B){
+ A->x = A->x - B->x;
+ A->y = A->y - B->y;
+}
+
+void point_mul(Point *A, Point *B){
+ A->x = A->x * B->x;
+ A->y = A->y * B->y;
+}
+
+void point_div(Point *A, Point *B){
+ A->x = A->x / B->x;
+ A->y = A->y / B->y;
+}
+
+float magnitude(flaot x, flaot y) {
+ return sqrt((pow(x,2) + pow(y,2)));
+}
+
+void point_set_mag(Point *point, float mag){
+ flaot getmag = magnitude(point->x, point->y);
+ flaot rx = (point->x / getmag) * mag;
+ flaot ry = (point->y / getmag) * mag;
+
+ point->x = rx;
+ point->y = ry;
+}
+
+void point_limit(Point *point, float mag){
+ flaot getmag = magnitude(point->x, point->y);
+ flaot rx, ry;
+ if (getmag > mag){
+ rx = (point->x / getmag) * mag;
+ ry = (point->y / getmag) * mag;
+ } else {
+ rx = point->x;
+ ry = point->y;
+ }
+
+ point->x = rx;
+ point->y = ry;
+}
+
+float RandomFloat(float min, float max){
+ return ((max - min) * ((float)rand() / (double)RAND_MAX)) + min;
+}
+
+float constrain(float val, float min, float max){
+ if(val > max) val=max;
+ else if(val < min) val=min;
+ return val;
+}
+
+#endif
diff --git a/src/main.c b/src/main.c
new file mode 100755
index 0000000..6e3dd89
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,107 @@
+#include <SDL2/SDL_timer.h>
+#include <stdio.h>
+#include <stdbool.h>
+#include <time.h>
+#include <pthread.h>
+#include <SDL2/SDL.h>
+#include <pipewire-0.3/pipewire/pipewire.h>
+#include <spa/param/audio/format-utils.h>
+
+bool running=true;
+
+#include "objects.h"
+#include "objects.c"
+#include "pipe.c"
+
+#define PROJECT_NAME "audio reactive"
+
+
+int main(int argc, char *argv[])
+{
+ if (SDL_InitSubSystem(SDL_INIT_VIDEO) < 0)
+ SDL_Log("SDL fails to initialize! %s\n", SDL_GetError());
+
+ int startw=600;
+ int starth=600;
+
+ SDL_Window *window = SDL_CreateWindow(PROJECT_NAME, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, startw, starth, SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL);
+ if (!window) {
+ printf("Failed to create window: %s\n", SDL_GetError());
+ }
+ SDL_Renderer *renderer = SDL_CreateRenderer(window,-1,SDL_RENDERER_SOFTWARE);
+ if (!renderer) {
+ printf("Failed to create renderer: %s\n", SDL_GetError());
+ }
+
+ VOL_ARG volargs={ argc, argv, };
+ pthread_t vol_thread;
+ int thread_err=pthread_create(&vol_thread, NULL, volume_input, (void *)&volargs);
+
+ pthread_t peak_reduc;
+ int thread_err2=pthread_create(&peak_reduc, NULL, avg_peak, NULL);
+
+ srand(time(NULL));
+ OBJECT_INER obj_storage[obj_n];
+
+ STUFFS stuff = {
+ startw,
+ starth,
+ window,
+ renderer,
+ false,
+ 0,
+ 0,
+ (OBJECT){},
+ 0,
+ 0,
+ };
+
+ init_stuffs(startw,starth,obj_storage,&stuff);
+
+
+ for (int i = 0; i < obj_n; i++)
+ stuff.obj.objs[i] = &obj_storage[i];
+
+ SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_BLEND);
+
+ bool quit = false;
+ SDL_Event e;
+ while (!quit) {
+ while (SDL_PollEvent(&e)) {
+ if (e.type == SDL_QUIT) {
+ quit = true;
+ }
+ else if(e.type == SDL_MOUSEBUTTONDOWN){
+ if(e.button.button==SDL_BUTTON_LEFT){
+ stuff.mousedown=true;
+ } else if(e.button.button==SDL_BUTTON_RIGHT){
+ }
+ } else if(e.type==SDL_MOUSEBUTTONUP){
+ stuff.mousedown=false;
+ }
+ stuff.mx=e.button.x;
+ stuff.my=e.button.y;
+ }
+ if(mutVolume.locked==false){
+ mutVolume.locked=true;
+ stuff.volume=mutVolume.volume;
+ stuff.avg_peak=mutVolume.avg_peak;
+ mutVolume.locked=false;
+ }
+ //SDL_Log("vol: %f avg: %f",stuff.volume,stuff.avg_peak);
+ draw(&stuff);
+ SDL_Delay(5);
+ }
+
+ running=false;
+ pw_main_loop_quit(GPipe.d->loop);
+ pthread_join(vol_thread,NULL);
+ pthread_join(peak_reduc,NULL);
+
+ SDL_DestroyRenderer(renderer);
+ SDL_DestroyWindow(window);
+ SDL_QuitSubSystem(SDL_INIT_VIDEO);
+ SDL_Quit();
+
+ return 0;
+}
diff --git a/src/objects.c b/src/objects.c
new file mode 100755
index 0000000..1107c1d
--- /dev/null
+++ b/src/objects.c
@@ -0,0 +1,122 @@
+#include <stdbool.h>
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_video.h>
+#include <SDL2/SDL2_gfxPrimitives.h>
+
+#include "global_objects.c"
+#include "objects.h"
+
+void constructor(int w, int h, OBJECT_INER *obj, float x, float y, float mass){
+ obj->pos.x = x;
+ obj->pos.y = y;
+ obj->vel = (Point){RandomFloat(-1, 1),RandomFloat(-1, 1)};
+ point_mul(&obj->vel,&(Point){5,5});
+ obj->acc = (Point){0,0};
+ obj->mass = mass;
+ obj->r = sqrt(obj->mass) * 2;
+ obj->retur=false;
+}
+
+void attractor_constructor(int w, int h, ATTRACTOR *attractor, float x, float y, float mass){
+ attractor->pos.x = x;
+ attractor->pos.y = y;
+ attractor->mass = mass;
+ attractor->r = sqrt(attractor->mass) * 2;
+}
+
+void init_stuffs(int w, int h, OBJECT_INER *objs,STUFFS *stuff){
+ for (int i=0; i<obj_n; i++){
+ constructor(w, h, &objs[i], RandomFloat(0, w), RandomFloat(0, h), RandomFloat(50, 150));
+ }
+ attractor_constructor(w,h,&stuff->obj.attractor,(float)w/2,(float)h/2,100);
+}
+
+void applyForce(OBJECT_INER *obj, Point force){
+ point_div(&force, &(Point){obj->mass,obj->mass});
+ point_add(&obj->acc, &force);
+}
+
+void update(STUFFS *stuff, OBJECT_INER *obj){
+ point_add(&obj->vel,&obj->acc);
+ point_limit(&obj->vel,10);
+ point_add(&obj->pos, &obj->vel);
+ obj->acc = (Point){0,0};
+}
+
+void show(STUFFS *stuff,OBJECT_INER *obj){
+ Sint16 x = (Sint16)obj->pos.x;
+ Sint16 y = (Sint16)obj->pos.y;
+
+ circleRGBA(stuff->renderer, x, y, obj->r, 190, 90, 255, 255);
+ filledCircleRGBA(stuff->renderer, x, y, obj->r, 150, 50, 255, 80);
+}
+
+float calcG(ATTRACTOR *attractor, OBJECT_INER *obj,STUFFS *stuff){
+ float G=0;
+ float dis=0;
+ Point pointA=attractor->pos;
+ point_sub(&pointA,&obj->pos);
+ dis=magnitude(pointA.x, pointA.y);
+
+ if (dis>(float)stuff->width/3){
+ obj->retur=true;
+ }
+ else if (dis<(float)stuff->width/3){
+ obj->retur=false;
+ }
+
+ G=1-(stuff->volume)*15;
+
+ if(obj->retur==true)
+ G=stuff->volume*20;
+
+ if(stuff->volume<0.01){
+ G=5;
+ }
+
+ if(G!=G) G=1;
+ return G;
+}
+
+void attract(ATTRACTOR *attractor, OBJECT_INER *obj,STUFFS *stuff){
+ Point force = {attractor->pos.x - obj->pos.x, attractor->pos.y - obj->pos.y};
+ float dist = magnitude(force.x, force.y);
+ dist = dist * dist;
+ dist = constrain(dist,100,1000);
+
+ float G = calcG(attractor,obj,stuff);
+ float strength = G * (attractor->mass * obj->mass) / dist;
+
+ point_set_mag(&force, strength);
+ applyForce(obj,force);
+}
+
+void atr_show(STUFFS *stuff,ATTRACTOR *attr){
+ SDL_RenderFillRect(stuff->renderer, &(SDL_Rect){attr->pos.x - attr->r, attr->pos.y - attr->r, attr->r*2, attr->r*2});
+}
+
+void draw(STUFFS *stuff){
+ SDL_SetRenderDrawColor(stuff->renderer,0,0,0,30);
+ //SDL_RenderClear(renderer);
+ SDL_RenderFillRect(stuff->renderer, &(SDL_Rect){0,0,stuff->width,stuff->height});
+ static int frame_i1=0;
+
+ for (int i=0; i<obj_n; i++){
+ update(stuff,stuff->obj.objs[i]);
+ show(stuff,stuff->obj.objs[i]);
+
+ attract(&stuff->obj.attractor, stuff->obj.objs[i], stuff);
+ float vol=stuff->volume;
+ if(vol==vol && frame_i1>200){
+ Point rand_p={RandomFloat(-1, 1),RandomFloat(-1, 1)};
+ point_set_mag(&rand_p, stuff->volume*100);
+ point_add(&stuff->obj.objs[i]->vel,&rand_p);
+ }
+ }
+ SDL_SetRenderDrawColor(stuff->renderer, 100,20,20,180);
+ atr_show(stuff,&stuff->obj.attractor);
+
+ if(frame_i1>200) frame_i1=0;
+ frame_i1++;
+ SDL_RenderPresent(stuff->renderer);
+}
diff --git a/src/objects.h b/src/objects.h
new file mode 100755
index 0000000..d1faa02
--- /dev/null
+++ b/src/objects.h
@@ -0,0 +1,52 @@
+#ifndef objects
+#define objects
+
+#include <stdio.h>
+#include <stdbool.h>
+#include <SDL2/SDL.h>
+#include "global_objects.c"
+
+#define flaot float
+
+#define obj_n 30
+
+typedef struct ATTRACTOR {
+ Point pos;
+ float r;
+ float mass;
+} ATTRACTOR;
+
+typedef struct OBJECT_INER {
+ Point pos;
+ Point vel;
+ Point acc;
+ float r;
+ float mass;
+ bool retur;
+} OBJECT_INER;
+
+typedef struct OBJECT {
+ ATTRACTOR attractor;
+ OBJECT_INER *objs[obj_n];
+} OBJECT;
+
+typedef struct{
+ bool locked;
+ flaot volume;
+ flaot avg_peak;
+} MUTEX_FLOAT;
+
+typedef struct{
+ int width;
+ int height;
+ SDL_Window* window;
+ SDL_Renderer* renderer;
+ bool mousedown;
+ int mx;
+ int my;
+ OBJECT obj;
+ flaot volume;
+ flaot avg_peak;
+} STUFFS;
+
+#endif
diff --git a/src/pipe.c b/src/pipe.c
new file mode 100644
index 0000000..60824ea
--- /dev/null
+++ b/src/pipe.c
@@ -0,0 +1,239 @@
+#ifndef pipec
+#define pipec
+#include <pipewire-0.3/pipewire/pipewire.h>
+#include <spa/param/audio/format-utils.h>
+#include <pthread.h>
+#include "objects.h"
+
+MUTEX_FLOAT mutVolume = { false, 0, };
+
+/* PipeWire */
+/* SPDX-FileCopyrightText: Copyright © 2022 Wim Taymans */
+/* SPDX-License-Identifier: MIT */
+
+/*
+ [title]
+ Audio capture using \ref pw_stream "pw_stream".
+ [title]
+ */
+
+struct data {
+ struct pw_main_loop *loop;
+ struct pw_stream *stream;
+
+ struct spa_audio_info format;
+ unsigned move:1;
+};
+
+/* our data processing function is in general:
+ *
+ * struct pw_buffer *b;
+ * b = pw_stream_dequeue_buffer(stream);
+ *
+ * .. consume stuff in the buffer ...
+ *
+ * pw_stream_queue_buffer(stream, b);
+ */
+static void on_process(void *userdata)
+{
+ struct data *data = userdata;
+ struct pw_buffer *b;
+ struct spa_buffer *buf;
+ float *samples, max;
+ uint32_t c, n, n_channels, n_samples, peak;
+
+ if ((b = pw_stream_dequeue_buffer(data->stream)) == NULL) {
+ pw_log_warn("out of buffers: %m");
+ return;
+ }
+
+ buf = b->buffer;
+ if ((samples = buf->datas[0].data) == NULL)
+ return;
+
+ n_channels = data->format.info.raw.channels;
+ n_samples = buf->datas[0].chunk->size / sizeof(float);
+
+ /* move cursor up */
+ //if (data->move)
+ // fprintf(stdout, "%c[%dA", 0x1b, n_channels + 1);
+ //fprintf(stdout, "captured %d samples\n", n_samples / n_channels);
+
+ for (c = 0; c < data->format.info.raw.channels; c++) {
+ max = 0.0f;
+ for (n = c; n < n_samples; n += n_channels)
+ max = fmaxf(max, fabsf(samples[n]));
+
+ peak = (uint32_t)SPA_CLAMPF(max * 30, 0.f, 39.f);
+
+ mutVolume.locked=true;
+ if(mutVolume.avg_peak<peak){
+ mutVolume.avg_peak=peak;
+ }
+ mutVolume.volume=(float)peak/mutVolume.avg_peak;
+ mutVolume.locked=false;
+
+ //fprintf(stdout, "channel %d: |%*s%*s| peak:%f\n",
+ // c, peak+1, "*", 40 - peak, "", max);
+ }
+
+ data->move = true;
+ fflush(stdout);
+
+ pw_stream_queue_buffer(data->stream, b);
+}
+
+/* Be notified when the stream param changes. We're only looking at the
+ * format changes.
+ */
+static void
+on_stream_param_changed(void *_data, uint32_t id, const struct spa_pod *param)
+{
+ struct data *data = _data;
+
+ /* NULL means to clear the format */
+ if (param == NULL || id != SPA_PARAM_Format)
+ return;
+
+ if (spa_format_parse(param, &data->format.media_type, &data->format.media_subtype) < 0)
+ return;
+
+ /* only accept raw audio */
+ if (data->format.media_type != SPA_MEDIA_TYPE_audio ||
+ data->format.media_subtype != SPA_MEDIA_SUBTYPE_raw)
+ return;
+
+ /* call a helper function to parse the format for us. */
+ spa_format_audio_raw_parse(param, &data->format.info.raw);
+
+ //fprintf(stdout, "capturing rate:%d channels:%d\n",
+ // data->format.info.raw.rate, data->format.info.raw.channels);
+
+}
+
+static const struct pw_stream_events stream_events = {
+ PW_VERSION_STREAM_EVENTS,
+ .param_changed = on_stream_param_changed,
+ .process = on_process,
+};
+
+static void do_quit(void *userdata, int signal_number)
+{
+ struct data *data = userdata;
+ pw_main_loop_quit(data->loop);
+}
+
+typedef struct VOL_ARG{
+ int argc;
+ char **argv;
+} VOL_ARG;
+
+struct pipe_control{
+ struct data* d;
+};
+
+struct pipe_control GPipe;
+
+void *volume_input(void* threadarg){
+ struct VOL_ARG *volargs;
+ volargs=(struct VOL_ARG *) threadarg;
+
+ int argc=volargs->argc;
+
+ struct data data = { 0, };
+ GPipe.d=&data;
+ const struct spa_pod *params[1];
+ uint8_t buffer[1024];
+ struct pw_properties *props;
+ struct spa_pod_builder b = SPA_POD_BUILDER_INIT(buffer, sizeof(buffer));
+
+ pw_init(&argc, &volargs->argv);
+
+ /* make a main loop. If you already have another main loop, you can add
+ * the fd of this pipewire mainloop to it. */
+ data.loop = pw_main_loop_new(NULL);
+
+ pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGINT, do_quit, &data);
+ pw_loop_add_signal(pw_main_loop_get_loop(data.loop), SIGTERM, do_quit, &data);
+
+ /* Create a simple stream, the simple stream manages the core and remote
+ * objects for you if you don't need to deal with them.
+ *
+ * If you plan to autoconnect your stream, you need to provide at least
+ * media, category and role properties.
+ *
+ * Pass your events and a user_data pointer as the last arguments. This
+ * will inform you about the stream state. The most important event
+ * you need to listen to is the process event where you need to produce
+ * the data.
+ */
+ props = pw_properties_new(PW_KEY_MEDIA_TYPE, "Audio",
+ PW_KEY_MEDIA_CATEGORY, "Capture",
+ PW_KEY_MEDIA_ROLE, "Music",
+ NULL);
+ if (argc > 1)
+ /* Set stream target if given on command line */
+ pw_properties_set(props, PW_KEY_TARGET_OBJECT, volargs->argv[1]);
+
+ /* uncomment if you want to capture from the sink monitor ports */
+ /* pw_properties_set(props, PW_KEY_STREAM_CAPTURE_SINK, "true"); */
+
+ data.stream = pw_stream_new_simple(
+ pw_main_loop_get_loop(data.loop),
+ "audio-capture",
+ props,
+ &stream_events,
+ &data);
+
+ /* Make one parameter with the supported formats. The SPA_PARAM_EnumFormat
+ * id means that this is a format enumeration (of 1 value).
+ * We leave the channels and rate empty to accept the native graph
+ * rate and channels. */
+ params[0] = spa_format_audio_raw_build(&b, SPA_PARAM_EnumFormat,
+ &SPA_AUDIO_INFO_RAW_INIT(
+ .format = SPA_AUDIO_FORMAT_F32));
+
+ /* Now connect this stream. We ask that our process function is
+ * called in a realtime thread. */
+ pw_stream_connect(data.stream,
+ PW_DIRECTION_INPUT,
+ PW_ID_ANY,
+ PW_STREAM_FLAG_AUTOCONNECT |
+ PW_STREAM_FLAG_MAP_BUFFERS |
+ PW_STREAM_FLAG_RT_PROCESS,
+ params, 1);
+
+ /* and wait while we let things run */
+ pw_main_loop_run(data.loop);
+
+ pw_stream_destroy(data.stream);
+ pw_main_loop_destroy(data.loop);
+ pw_deinit();
+
+ pthread_exit(NULL);
+}
+
+void delay(int milli_seconds)
+{
+ // Storing start time
+ clock_t start_time = clock();
+
+ // looping till required time is not achieved
+ while (clock() < start_time + milli_seconds);
+}
+
+void *avg_peak(){
+ while (running){
+ if(mutVolume.locked==false){
+ mutVolume.locked=true;
+ if(mutVolume.avg_peak>0){
+ mutVolume.avg_peak=mutVolume.avg_peak-0.0001;
+ }
+ mutVolume.locked=false;
+ }
+ delay(100);
+ }
+ pthread_exit(NULL);
+}
+
+#endif
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