restructure project

1 files changed, 0 insertions, 390 deletions

diff --git a/src/plug.c b/src/plug.c
deleted file mode 100644
index f67382d..0000000
--- a/src/plug.c
+++ /dev/null
@@ -1,390 +0,0 @@
-#include <stdio.h>
-#include <math.h>
-#include <assert.h>
-#include <string.h>
-#include <stdlib.h>
-#include <complex.h>
-#include <raylib.h>
-#include <rlgl.h>
-
-#include "plug.h"
-
-#define SAMPLE_SIZE (1<<13)
-#define FONT_SIZE 69
-#define SMOOTHNESS 8
-#define SMEARNESS 6
-
-typedef struct {
-    Music music;
-    float audio_volume;
-    bool error;
-    Font font;
-    Shader circle;
-    Shader smear;
-    char render_option;
-} Plug;
-
-Plug *plug = NULL;
-
-float in_raw[SAMPLE_SIZE];
-float in_win[SAMPLE_SIZE];
-float complex out_raw[SAMPLE_SIZE];
-float out_log[SAMPLE_SIZE];
-float out_smooth[SAMPLE_SIZE];
-float out_smear[SAMPLE_SIZE];
-
-// char render_option = 'b';
-
-void fft(float in[], size_t stride, float complex out[], size_t n)
-{
-    assert(n > 0);
-
-    if (n == 1) {
-        out[0] = in[0];
-        return;
-    }
-
-    fft(in,          stride*2, out,       n/2); // even
-    fft(in + stride, stride*2, out + n/2, n/2); // odd
-
-    // v = o*x
-    // out = e + o*x e + o*x e e | e - o*x e - o*x o o
-    for (size_t k = 0; k < n/2; ++k) {
-        float t = (float)k/n;
-        float complex v = cexp(-2*I*PI*t)*out[k + n/2];
-        float complex e = out[k];
-        out[k] = e + v;
-        out[k + n/2] = e - v;
-    }
-}
-
-float amp(float complex z)
-{
-    float a = cabsf(z);
-    return 2*log10f(a);
-}
-
-void callback(void *bufferData, unsigned int frames)
-{
-    float (*fs)[2] = bufferData;
-
-    for (size_t i = 0; i < frames; ++i) {
-        memmove(in_raw, in_raw + 1, (SAMPLE_SIZE - 1)*sizeof(in_raw[0]));
-        in_raw[SAMPLE_SIZE-1] = fs[i][0];
-    }
-}
-
-void PausePlayMusic(void)
-{
-    if (IsMusicStreamPlaying(plug->music)) {
-        PauseMusicStream(plug->music);
-        printf("Music paused\n");
-    } else {
-        ResumeMusicStream(plug->music);
-        printf("Music resumed\n");
-    }
-}
-
-void RaiseVolume(void)
-{
-    plug->audio_volume += 0.02;
-    if (plug->audio_volume > 1.0) {
-        plug->audio_volume = 1.0;
-    }
-    printf("Audio Level: %f\n", plug->audio_volume);
-    SetMusicVolume(plug->music, plug->audio_volume);
-}
-
-void LowerVolume(void)
-{
-    plug->audio_volume -= 0.02;
-    if (plug->audio_volume < 0.0) {
-        plug->audio_volume = 0.0;
-    }
-    printf("Audio Level: %f\n", plug->audio_volume);
-    SetMusicVolume(plug->music, plug->audio_volume);
-}
-
-void PrepareMusicStream(void)
-{
-    if (IsMusicValid(plug->music)) {
-        StopMusicStream(plug->music);
-        UnloadMusicStream(plug->music);
-    }
-}
-
-void StartMusicStream(void)
-{
-    if (IsMusicValid(plug->music)) {
-        plug->error = false;
-        printf("music.frameCount = %u\n", plug->music.frameCount);
-        printf("music.stream.sampleRate = %u\n", plug->music.stream.sampleRate);
-        printf("music.stream.sampleSize = %u\n", plug->music.stream.sampleSize);
-        printf("music.stream.channels = %u\n", plug->music.stream.channels);
-        SetMusicVolume(plug->music, plug->audio_volume);
-        AttachAudioStreamProcessor(plug->music.stream, callback);
-        PlayMusicStream(plug->music);
-    } else {
-        plug->error = true;
-    }
-}
-
-size_t fft_analyze(float dt)
-{
-    // Apply Hann Window on input - https://en.wikipedia.org/wiki/Hann_function
-    for (size_t i = 0; i < SAMPLE_SIZE; ++i) {
-        float t = (float)i/(SAMPLE_SIZE-1);
-        float hann = 0.5 - 0.5*cosf(2*PI*t);
-        in_win[i] = hann * in_raw[i];
-    }
-
-    // FFT
-    fft(in_win, 1, out_raw, SAMPLE_SIZE);
-
-    // Convert into logarithmic scale
-    float step = 1.06;
-    float lowf = 1.0f;
-    size_t m = 0;
-    float max_amp = 1.0f;
-    for (float f = lowf; (size_t) f < SAMPLE_SIZE/2; f = ceilf(f*step)) {
-        float f1 = ceilf(f*step);
-        float a = 0.0f;
-        for (size_t q = (size_t) f; q < SAMPLE_SIZE/2 && q < (size_t) f1; ++q) {
-            float b = amp(out_raw[q]);
-            if (b > a) a = b;
-        }
-        if (max_amp < a) max_amp = a;
-        out_log[m++] = a;
-    }
-
-    // Normalize frequencies 0..1 range
-    for (size_t i = 0; i < m; ++i) {
-        out_log[i] /= max_amp;
-    }
-
-    // Interpolate frequencies
-    for (size_t i = 0; i < m; ++i) {
-        out_smooth[i] += (out_log[i] - out_smooth[i])*dt*SMOOTHNESS;
-        out_smear[i] += (out_smooth[i] - out_smear[i])*dt*SMEARNESS;
-    }
-    return m;
-}
-
-void fft_render_bars(int w, int h, size_t m)
-{
-    // Display the frequencies
-    float cell_width = (float)w/m;
-    float saturation = 0.75f;
-    float value = 0.9f;
-
-    // Draw the bars
-    for (size_t i = 0; i < m; ++i) {
-        float t = out_smooth[i];
-        float hue = (float)i/m;
-        Color color = ColorFromHSV(hue*360, saturation, value);
-        float thickness = (cell_width/1.8)*sqrtf(t);
-        Vector2 start_pos = {
-            .x = i*cell_width + cell_width/2,
-            .y = h,
-        };
-        Vector2 end_pos = {
-            .x = start_pos.x,
-            .y = start_pos.y - h*2/3*t,
-        };
-        DrawLineEx(start_pos, end_pos, thickness, color);
-    }
-
-
-    // Construct a texture to be used in the shader
-    // since fragTexCoord doesn't work on shapes
-    Texture2D texture = { rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 };
-
-    // Draw smear frames
-    BeginShaderMode(plug->smear);
-    for (size_t i = 0; i < m; ++i) {
-        float start = out_smear[i];
-        float end = out_smooth[i];
-        float hue = (float)i/m;
-        Color color = ColorFromHSV(hue*360, saturation, value);
-        float radius = cell_width*3*sqrt(end);
-        Vector2 origin = {0};
-        Vector2 start_pos = {
-            .x = i*cell_width + cell_width/2,
-            .y = h - h*2/3*start,
-        };
-        Vector2 end_pos = {
-            .x = i*cell_width + cell_width/2,
-            .y = h - h*2/3*end,
-        };
-        if (end_pos.y >= start_pos.y) {
-            Rectangle dest = {
-                .x = start_pos.x - radius/2,
-                .y = start_pos.y,
-                .width = radius,
-                .height = end_pos.y - start_pos.y,
-            };
-            Rectangle source = {0, 0, 1, 0.5};
-            DrawTexturePro(texture, source, dest, origin, 0, color);
-        } else {
-            Rectangle dest = {
-                .x = end_pos.x - radius/2,
-                .y = end_pos.y,
-                .width = radius,
-                .height = start_pos.y - end_pos.y,
-            };
-            Rectangle source = {0, 0.5, 1, 0.5};
-            DrawTexturePro(texture, source, dest, origin, 0, color);
-        }
-    }
-    EndShaderMode();
-
-    // Draw the circles
-    BeginShaderMode(plug->circle);
-    for (size_t i = 0; i < m; ++i) {
-        float t = out_smooth[i];
-        float hue = (float)i/m;
-        Color color = ColorFromHSV(hue*360, saturation, value);
-        float radius = cell_width*4*sqrtf(t);
-        Vector2 position = {
-            .x = i*cell_width + cell_width/2 - radius,
-            .y = h - h*2/3*t - radius,
-        };
-        DrawTextureEx(texture, position, 0, 2*radius, color);
-    }
-    EndShaderMode();
-}
-
-void fft_render_circle(int w, int h, size_t m)
-{
-    // Display the frequencies
-    float cell_width = (float)720/m;
-    float saturation = 0.75f;
-    float value = 0.9f;
-
-    // Construct a texture to be used in the shader
-    // since fragTexCoord doesn't work on shapes
-    Texture2D texture = { rlGetTextureIdDefault(), 1, 1, 1, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8 };
-
-    // Draw the circles
-    BeginShaderMode(plug->circle);
-    for (size_t i = 0; i < m; ++i) {
-        float t = out_smooth[i];
-        float hue = (float)i/m;
-        Color color = ColorFromHSV(hue*360, saturation, value);
-        float radius = cell_width*4*sqrtf(t);
-        Vector2 position = {
-            .x = w/2 + (h/2.1 * cos(i * cell_width)) * sqrtf(t) - radius,
-            .y = h/2 + (h/2.1 * sin(i * cell_width)) * sqrtf(t) - radius,
-        };
-        DrawTextureEx(texture, position, 0, 2*radius, color);
-    }
-    EndShaderMode();
-}
-
-Plug *plug_pre_reload(void)
-{
-    if (IsMusicValid(plug->music)) {
-        DetachAudioStreamProcessor(plug->music.stream, callback);
-    }
-    return plug;
-}
-
-void plug_post_reload(Plug *prev)
-{
-    plug = prev;
-    if (IsMusicValid(plug->music)) {
-        AttachAudioStreamProcessor(plug->music.stream, callback);
-    }
-    UnloadShader(plug->circle);
-    UnloadShader(plug->smear);
-    plug->circle = LoadShader(NULL, "./shaders/circles.fs");
-    plug->smear = LoadShader(NULL, "./shaders/smear.fs");
-}
-
-void plug_init(void)
-{
-    plug = malloc(sizeof(*plug));
-    assert(plug != NULL && "Not enough RAM!");
-    memset(plug, 0, sizeof(*plug));
-
-    plug->font = LoadFontEx("./fonts/AlegreyaSans-Regular.ttf", FONT_SIZE, NULL, 0);
-    plug->circle = LoadShader(NULL, "./shaders/circles.fs");
-    plug->smear = LoadShader(NULL, "./shaders/smear.fs");
-    plug->audio_volume = 0.5f;
-    plug->render_option = 'b';
-}
-
-void plug_update(void)
-{
-    if (IsMusicValid(plug->music)) {
-        UpdateMusicStream(plug->music);
-    }
-
-    if (IsKeyPressed(KEY_SPACE) && IsMusicValid(plug->music)) {
-        PausePlayMusic();
-    }
-
-    if (IsKeyPressed(KEY_UP)) {
-        RaiseVolume();
-    }
-
-    if (IsKeyPressed(KEY_DOWN)) {
-        LowerVolume();
-    }
-
-    if (IsKeyPressed(KEY_N)) {
-        plug->render_option = 'b';
-    }
-
-    if (IsKeyPressed(KEY_I)) {
-        plug->render_option = 'c';
-    }
-
-    if (IsFileDropped()){
-        FilePathList droppedFiles = LoadDroppedFiles();
-        const char *file_path = droppedFiles.paths[0];
-
-        PrepareMusicStream();
-        plug->music = LoadMusicStream(file_path);
-        StartMusicStream();
-
-        UnloadDroppedFiles(droppedFiles);
-    }
-
-    float w = GetRenderWidth();
-    float h = GetRenderHeight();
-    float dt = GetFrameTime();
-
-    BeginDrawing();
-    ClearBackground(CLITERAL(Color) {
-        0x1, 0x1, 0x1, 0xFF
-    });
-
-    if (IsMusicValid(plug->music)) {
-        size_t m = fft_analyze(dt);
-        switch(plug->render_option)
-        {
-            case 'b': fft_render_bars(w, h, m); break;
-            case 'c': fft_render_circle(w, h, m); break;
-            default: break;
-        }
-
-    } else {
-        const char *label;
-        Color color;
-        if (plug->error) {
-            label = "Could not load file";
-            color = RED;
-        } else {
-            label = "Drag & Drop Music Here";
-            color = WHITE;
-        }
-        Vector2 size = MeasureTextEx(plug->font, label, plug->font.baseSize, 0);
-        Vector2 position = {
-            .x = w/2 - size.x/2,
-            .y = h/2 - size.y/2,
-        };
-        DrawTextEx(plug->font, label, position, plug->font.baseSize, 0, color);
-    }
-    EndDrawing();
-}