From 124666b9c55df0c2f4ccf77053651050c400248c Mon Sep 17 00:00:00 2001
From: skal <pascal.massimino@gmail.com>
Date: Thu, 5 Mar 2026 09:46:05 +0100
Subject: remove dead tool 'specview'

---
 tools/specview.cc | 104 ------------------------------------------------------
 1 file changed, 104 deletions(-)
 delete mode 100644 tools/specview.cc

diff --git a/tools/specview.cc b/tools/specview.cc
deleted file mode 100644
index 3cbfdc9..0000000
--- a/tools/specview.cc
+++ /dev/null
@@ -1,104 +0,0 @@
-// This file is part of the 64k demo project.
-// It implements the specview tool for visualizing spectrograms.
-// Renders spectral data as ASCII art in the console.
-
-#include <algorithm> // For std::max_element
-#include <math.h>
-#include <stdio.h>
-#include <string.h>
-#include <vector>
-
-// Redefine SpecHeader from spectool.cc
-struct SpecHeader {
-  char magic[4];
-  int32_t version;
-  int32_t dct_size;
-  int32_t num_frames;
-};
-
-void print_usage() {
-  printf("Usage: specview <input.spec>\n");
-  printf("Displays an ASCII representation of a spectrogram file.\n");
-}
-
-int main(int argc, char** argv) {
-  if (argc < 2) {
-    print_usage();
-    return 1;
-  }
-
-  const char* input_path = argv[1];
-
-  FILE* f_in = fopen(input_path, "rb");
-  if (!f_in) {
-    printf("Error: Failed to open input file: %s\n", input_path);
-    return 1;
-  }
-
-  SpecHeader header;
-  if (fread(&header, sizeof(SpecHeader), 1, f_in) != 1 ||
-      strncmp(header.magic, "SPEC", 4) != 0) {
-    printf("Error: Invalid spectrogram file format.\n");
-    fclose(f_in);
-    return 1;
-  }
-
-  if (header.version != 1) {
-    printf("Error: Unsupported spectrogram version %d.\n", header.version);
-    fclose(f_in);
-    return 1;
-  }
-
-  std::vector<float> spec_data(header.num_frames * header.dct_size);
-  if (fread(spec_data.data(), sizeof(float), spec_data.size(), f_in) !=
-      spec_data.size()) {
-    printf("Error: Failed to read all spectrogram data.\n");
-    fclose(f_in);
-    return 1;
-  }
-  fclose(f_in);
-
-  printf("Spectrogram: %s\n", input_path);
-  printf("  DCT Size: %d\n", header.dct_size);
-  printf("  Num Frames: %d\n", header.num_frames);
-
-  // Find max magnitude for normalization
-  float max_mag = 0.0f;
-  for (float val : spec_data) {
-    max_mag = std::max(max_mag, fabsf(val));
-  }
-  if (max_mag == 0.0f)
-    max_mag = 1.0f; // Avoid division by zero
-
-  // ASCII visualization
-  const char* gradient = " .:-=+*#%@";
-  int gradient_len = strlen(gradient);
-
-  printf("\nASCII Visualization:\n");
-  for (int frame = 0; frame < header.num_frames; ++frame) {
-    printf("%4d: ", frame);
-    const float* current_frame_data =
-        spec_data.data() + frame * header.dct_size;
-
-    // Average bins into fewer columns for better fit on console
-    const int display_cols = 80; // Max console width
-    const int bins_per_col =
-        header.dct_size / display_cols; // Divide into 80 bins
-
-    for (int col = 0; col < display_cols; ++col) {
-      float sum_mag = 0.0f;
-      for (int bin_idx = 0; bin_idx < bins_per_col; ++bin_idx) {
-        int current_bin = col * bins_per_col + bin_idx;
-        if (current_bin < header.dct_size) {
-          sum_mag += fabsf(current_frame_data[current_bin]);
-        }
-      }
-      float avg_mag = sum_mag / bins_per_col;
-      int char_idx = (int)((avg_mag / max_mag) * (gradient_len - 1));
-      printf("%c", gradient[char_idx]);
-    }
-    printf("\n");
-  }
-
-  return 0;
-}
-- 
cgit v1.2.3