From 422a758cb2cd4b6645b51e798651f8098f9b90ce Mon Sep 17 00:00:00 2001
From: Armin <armin@raumschiff>
Date: Fri, 3 Jul 2026 20:52:11 +0200
Subject: [PATCH] Remove outer frames

---
 tcd.c | 187 ++++++++++++++++++++--------------------------------------
 1 file changed, 63 insertions(+), 124 deletions(-)

diff --git a/tcd.c b/tcd.c
index dc5691b..9b3666c 100644
--- a/tcd.c
+++ b/tcd.c
@@ -435,9 +435,7 @@ static void repeat_str(const char *s, int n)
 
 static void draw_hline(int width)
 {
-    printf(ANSI_BLUE "│" ANSI_RESET);
     printf(ANSI_BLUE); repeat_str("─", width); printf(ANSI_RESET);
-    printf(ANSI_BLUE "│" ANSI_RESET);
     printf("\n");
 }
 
@@ -468,7 +466,6 @@ static void freq_label_row(int chart_w, double nyquist)
         }
     }
 
-    printf(ANSI_BLUE "│" ANSI_RESET);
     int p = 0;
     for (int i = 0; i < chart_w; i++) {
         if (p < n_keep && i == pos[keep[p]]) {
@@ -478,10 +475,8 @@ static void freq_label_row(int chart_w, double nyquist)
             putchar(' ');
         }
     }
-    printf(ANSI_BLUE "│" ANSI_RESET);
     printf("\n");
 
-    printf(ANSI_BLUE "│" ANSI_RESET);
     p = 0;
     for (int i = 0; i < chart_w; i++) {
         if (p < n_keep && i == pos[keep[p]]) {
@@ -494,7 +489,6 @@ static void freq_label_row(int chart_w, double nyquist)
             putchar(' ');
         }
     }
-    printf(ANSI_BLUE "│" ANSI_RESET);
     printf("\n");
 }
 
@@ -517,7 +511,7 @@ static void render_visual_spectrum(
     double nyquist = sample_rate / 2.0;
 
     int label_w = 7;
-    int chart_w = term_w - label_w - 2;
+    int chart_w = term_w - label_w;
     if (chart_w < 20) chart_w = 20;
 
     double *spec = malloc(n_bins * sizeof(double));
@@ -555,20 +549,13 @@ static void render_visual_spectrum(
     int n_rows = 8;
     double db_step = (db_max - db_min) / n_rows;
 
-    /* ============================ */
-    /*         TOP BORDER           */
-    /* ============================ */
-    printf(ANSI_BLUE "╭" ANSI_RESET);
-    printf(ANSI_BLUE); repeat_str("─", chart_w + label_w); printf(ANSI_RESET);
-    printf(ANSI_BLUE "╮" ANSI_RESET "\n");
-
     /* --- Title bar --- */
     char title[256];
     const char *short_name = strrchr(filename, '/');
     short_name = short_name ? short_name + 1 : filename;
     int info_len = snprintf(title, sizeof(title), "  %s  |  %s  |  %d Hz  |  %d ch",
                             short_name, fmt_name, sample_rate, channels);
-    int total_w = term_w - 2;
+    int total_w = term_w;
     if (info_len > total_w) {
         char truncated[256];
         snprintf(truncated, sizeof(truncated), "  %s  |  %d Hz  |  %d ch",
@@ -582,15 +569,11 @@ static void render_visual_spectrum(
                 }
             }
         }
-        printf(ANSI_BLUE "│" ANSI_RESET);
         printf(ANSI_BOLD ANSI_CYAN "%s" ANSI_RESET, truncated);
-        repeat_char(' ', total_w - (int)strlen(truncated));
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("\n");
     } else {
-        printf(ANSI_BLUE "│" ANSI_RESET);
         printf(ANSI_BOLD ANSI_CYAN "%s" ANSI_RESET, title);
-        repeat_char(' ', total_w - info_len);
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("\n");
     }
 
     draw_hline(chart_w + label_w);
@@ -600,7 +583,6 @@ static void render_visual_spectrum(
     /* ============================ */
     for (int row = 0; row < n_rows; row++) {
         double db_val = db_max - row * db_step;
-        printf(ANSI_BLUE "│" ANSI_RESET);
         printf(ANSI_DIM "%6.0f " ANSI_RESET, db_val);
 
         for (int c = 0; c < chart_w; c++) {
@@ -619,11 +601,10 @@ static void render_visual_spectrum(
                 printf("░");
             }
         }
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("\n");
     }
 
     /* --- Cutoff arrow row --- */
-    printf(ANSI_BLUE "│" ANSI_RESET);
     repeat_char(' ', label_w);
     for (int c = 0; c < chart_w; c++) {
         if (c == cutoff_col) {
@@ -632,7 +613,7 @@ static void render_visual_spectrum(
             putchar(' ');
         }
     }
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     /* --- Cutoff label --- */
     char cutoff_label[64];
@@ -648,13 +629,12 @@ static void render_visual_spectrum(
     if (label_start < 0) label_start = 0;
     if (label_start + clen > chart_w) label_start = chart_w - clen;
 
-    printf(ANSI_BLUE "│" ANSI_RESET);
     repeat_char(' ', label_w);
     repeat_char(' ', label_start);
     printf(ANSI_YELLOW ANSI_BOLD "%s" ANSI_RESET, cutoff_label);
     int remain = chart_w - label_start - clen;
     if (remain > 0) repeat_char(' ', remain);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     /* --- Tick marks --- */
     freq_label_row(chart_w, nyquist);
@@ -667,23 +647,23 @@ static void render_visual_spectrum(
     char peak_dbfs_str[32];
     snprintf(peak_dbfs_str, sizeof(peak_dbfs_str), "%.1f", 20.0 * log10(peak));
 
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Peak:" ANSI_RESET " %7s dBFS  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Windows:" ANSI_RESET " %d  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "FFT:" ANSI_RESET " %d",
+    printf("  " ANSI_BOLD "Peak:" ANSI_RESET " %7s dBFS  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Windows:" ANSI_RESET " %d  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "FFT:" ANSI_RESET " %d",
            peak_dbfs_str, analyzer_count, fft_size);
     int used_metrics = 30 + 14 + 10 + 14;
     repeat_char(' ', term_w - 2 - used_metrics);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     draw_hline(chart_w + label_w);
 
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Cutoff:" ANSI_RESET " %7.0f Hz  (%5.1f%%)  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Steepness:" ANSI_RESET " %6.0f Hz  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Noise:" ANSI_RESET " %6.1f dB",
+    printf("  " ANSI_BOLD "Cutoff:" ANSI_RESET " %7.0f Hz  (%5.1f%%)  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Steepness:" ANSI_RESET " %6.0f Hz  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Noise:" ANSI_RESET " %6.1f dB",
            cutoff_hz, 100.0 * cutoff_hz / nyquist, steepness, noise_db);
     repeat_char(' ', term_w - 2 - 62);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Roughness:" ANSI_RESET " %6.3f  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Band ratio:" ANSI_RESET " %6.3f",
+    printf("  " ANSI_BOLD "Roughness:" ANSI_RESET " %6.3f  " ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Band ratio:" ANSI_RESET " %6.3f",
            roughness, band_ratio);
     repeat_char(' ', term_w - 2 - 36);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     /* ============================ */
     /*    DECISION / VALIDITY       */
@@ -694,7 +674,7 @@ static void render_visual_spectrum(
     double confidence = compute_confidence(
         cutoff_ratio, steepness, roughness, band_ratio, is_native_lossy);
 
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Decision:" ANSI_RESET " ");
+    printf("  " ANSI_BOLD "Decision:" ANSI_RESET " ");
     if (peak_db < -90.0) {
         printf(ANSI_RED "SILENT" ANSI_RESET " (no detectable audio content)");
     } else if (is_native_lossy) {
@@ -708,9 +688,7 @@ static void render_visual_spectrum(
         else
             printf(ANSI_GREEN "GENUINE" ANSI_RESET " (likely native lossless)");
     }
-    int dlen = (int)strlen("  Decision: ") + 50;
-    repeat_char(' ', term_w - 2 - dlen);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     /* Validity bar */
     int bar_w = 20;
@@ -725,25 +703,20 @@ static void render_visual_spectrum(
     else if (confidence >= 30) conf_label = "Weak evidence";
     else conf_label = "Borderline / inconclusive";
 
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Validity:" ANSI_RESET " ");
+    printf("  " ANSI_BOLD "Validity:" ANSI_RESET " ");
     for (int i = 0; i < bar_w; i++) {
         if (i < filled) printf(ANSI_GREEN "█" ANSI_RESET);
         else printf(ANSI_DIM "░" ANSI_RESET);
     }
     printf(ANSI_BOLD " %3.0f%%" ANSI_RESET, confidence);
     printf("  \xe2\x80\x94 %s", conf_label);
-    int vlen = 12 + bar_w + 5 + 2 + (int)strlen(conf_label);
-    repeat_char(' ', term_w - 2 - vlen);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
-    printf(ANSI_BLUE "│" ANSI_RESET);
-    repeat_char(' ', term_w - 2);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 
     /* --- Factor breakdown --- */
-    printf(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Factors:" ANSI_RESET);
-    repeat_char(' ', term_w - 12);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("  " ANSI_BOLD "Factors:" ANSI_RESET);
+    printf("\n");
 
     if (is_native_lossy) {
         if (upscaled) {
@@ -751,22 +724,18 @@ static void render_visual_spectrum(
             snprintf(line, sizeof(line),
                      "    cutoff_ratio=%.3f < expected for bitrate (%lld kbps)",
                      cutoff_ratio, (long long)(bitrate / 1000));
-            printf(ANSI_BLUE "│" ANSI_RESET "  %s  " ANSI_GREEN "✓" ANSI_RESET, line);
-            int remain = term_w - 4 - (int)strlen(line) - 2;
-            if (remain > 0) repeat_char(' ', remain);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("  %s  " ANSI_GREEN "✓" ANSI_RESET, line);
+            printf("\n");
 
             const char *src_hint = "";
             if (cutoff_ratio < 0.70) src_hint = "≤ 64 kbps source";
             else if (cutoff_ratio < 0.80) src_hint = "96–128 kbps source";
             else if (cutoff_ratio < 0.88) src_hint = "128–192 kbps source";
-            printf(ANSI_BLUE "│" ANSI_RESET "    → " ANSI_BOLD "Suggest %s" ANSI_RESET, src_hint);
-            repeat_char(' ', term_w - 4 - (int)strlen(src_hint) - 14);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("    → " ANSI_BOLD "Suggest %s" ANSI_RESET, src_hint);
+            printf("\n");
         } else {
-            printf(ANSI_BLUE "│" ANSI_RESET "    cutoff_ratio=%.3f within expected range for this bitrate  " ANSI_GREEN "✓" ANSI_RESET, cutoff_ratio);
-            repeat_char(' ', term_w - 2 - 68);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("    cutoff_ratio=%.3f within expected range for this bitrate  " ANSI_GREEN "✓" ANSI_RESET, cutoff_ratio);
+            printf("\n");
         }
     } else {
         double max_bw_display;
@@ -786,81 +755,63 @@ static void render_visual_spectrum(
         int secondary_applies = (cutoff_ratio > 0.80);
 
         if (cutoff_ratio >= 0.99) {
-            printf(ANSI_BLUE "│" ANSI_RESET "    ① cutoff_ratio=%.3f ≥ 0.99  " ANSI_RED "✗" ANSI_RESET "  (full spectrum, no cutoff)", cutoff_ratio);
-            repeat_char(' ', term_w - 2 - 62);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("    ① cutoff_ratio=%.3f ≥ 0.99  " ANSI_RED "✗" ANSI_RESET "  (full spectrum, no cutoff)", cutoff_ratio);
+            printf("\n");
         } else {
             char bw_label[64];
             snprintf(bw_label, sizeof(bw_label), "transition_bw=%.0fHz < %.0fHz threshold",
                      steepness, max_bw_display);
 
             if (primary_hit) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ① cutoff_ratio=%.3f, %s  " ANSI_GREEN "✓" ANSI_RESET,
+                printf("    ① cutoff_ratio=%.3f, %s  " ANSI_GREEN "✓" ANSI_RESET,
                        cutoff_ratio, bw_label);
-                repeat_char(' ', term_w - 2 - (int)strlen(bw_label) - 24);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("\n");
             } else {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ① cutoff_ratio=%.3f, transition_bw=%.0fHz ≥ %.0fHz threshold  " ANSI_RED "✗" ANSI_RESET,
+                printf("    ① cutoff_ratio=%.3f, transition_bw=%.0fHz ≥ %.0fHz threshold  " ANSI_RED "✗" ANSI_RESET,
                        cutoff_ratio, steepness, max_bw_display);
-                repeat_char(' ', term_w - 2 - 71);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("\n");
             }
         }
 
         if (primary_hit) {
-            printf(ANSI_BLUE "│" ANSI_RESET "    → " ANSI_YELLOW "Transition bandwidth indicates transcode" ANSI_RESET);
-            repeat_char(' ', term_w - 2 - 44);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("    → " ANSI_YELLOW "Transition bandwidth indicates transcode" ANSI_RESET);
+            printf("\n");
         }
 
         if (secondary_applies) {
             int sec_hit = 0;
             if (roughness > 0.40) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ② roughness=%.3f > 0.40  " ANSI_GREEN "✓" ANSI_RESET "  (high roughness → transcode)", roughness);
-                repeat_char(' ', term_w - 2 - 60);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("    ② roughness=%.3f > 0.40  " ANSI_GREEN "✓" ANSI_RESET "  (high roughness → transcode)", roughness);
+                printf("\n");
                 sec_hit = 1;
             } else if (roughness > 0.30 && band_ratio < 0.90) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ② roughness=%.3f > 0.30  " ANSI_GREEN "✓" ANSI_RESET "  band_ratio=%.3f < 0.90  " ANSI_GREEN "✓" ANSI_RESET,
+                printf("    ② roughness=%.3f > 0.30  " ANSI_GREEN "✓" ANSI_RESET "  band_ratio=%.3f < 0.90  " ANSI_GREEN "✓" ANSI_RESET,
                        roughness, band_ratio);
-                repeat_char(' ', term_w - 2 - 62);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("\n");
                 sec_hit = 1;
             } else if (roughness > 0.20 && band_ratio < 0.85) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ② roughness=%.3f > 0.20  " ANSI_GREEN "✓" ANSI_RESET "  band_ratio=%.3f < 0.85  " ANSI_GREEN "✓" ANSI_RESET,
+                printf("    ② roughness=%.3f > 0.20  " ANSI_GREEN "✓" ANSI_RESET "  band_ratio=%.3f < 0.85  " ANSI_GREEN "✓" ANSI_RESET,
                        roughness, band_ratio);
-                repeat_char(' ', term_w - 2 - 62);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("\n");
                 sec_hit = 1;
             }
 
             if (sec_hit) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    → " ANSI_YELLOW "Secondary criteria triggered: transcode confirmed" ANSI_RESET);
-                repeat_char(' ', term_w - 2 - 52);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("    → " ANSI_YELLOW "Secondary criteria triggered: transcode confirmed" ANSI_RESET);
+                printf("\n");
             } else if (!primary_hit) {
-                printf(ANSI_BLUE "│" ANSI_RESET "    ② Secondary: roughness=%.3f, band_ratio=%.3f  " ANSI_RED "✗" ANSI_RESET,
+                printf("    ② Secondary: roughness=%.3f, band_ratio=%.3f  " ANSI_RED "✗" ANSI_RESET,
                        roughness, band_ratio);
-                repeat_char(' ', term_w - 2 - 56);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
-                printf(ANSI_BLUE "│" ANSI_RESET "    → " ANSI_GREEN "No transcode criteria met: genuine lossless" ANSI_RESET);
-                repeat_char(' ', term_w - 2 - 46);
-                printf(ANSI_BLUE "│" ANSI_RESET "\n");
+                printf("\n");
+                printf("    → " ANSI_GREEN "No transcode criteria met: genuine lossless" ANSI_RESET);
+                printf("\n");
             }
         } else if (!primary_hit) {
-            printf(ANSI_BLUE "│" ANSI_RESET "    → " ANSI_GREEN "No transcode criteria met: genuine lossless" ANSI_RESET);
-            repeat_char(' ', term_w - 2 - 46);
-            printf(ANSI_BLUE "│" ANSI_RESET "\n");
+            printf("    → " ANSI_GREEN "No transcode criteria met: genuine lossless" ANSI_RESET);
+            printf("\n");
         }
     }
 
-    /* ============================ */
-    /*        BOTTOM BORDER         */
-    /* ============================ */
-    printf(ANSI_BLUE "╰" ANSI_RESET);
-    printf(ANSI_BLUE); repeat_str("─", chart_w + label_w); printf(ANSI_RESET);
-    printf(ANSI_BLUE "╯" ANSI_RESET "\n");
-
     free(spec);
     free(col_max);
 }
@@ -883,14 +834,13 @@ static int vis_len(const char *s)
     return len;
 }
 
-static void pn(const char *s)    { printf("%s", s); }
 static void pl(const char *s, int w)
 {
     int sl = vis_len(s);
-    printf(ANSI_BLUE "│" ANSI_RESET "  %s", s);
-    int pad = w - 4 - sl;
+    printf("  %s", s);
+    int pad = w - 2 - sl;
     if (pad > 0) repeat_char(' ', pad);
-    printf(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("\n");
 }
 
 static void print_help(const char *prog)
@@ -898,8 +848,6 @@ static void print_help(const char *prog)
     int tw = get_term_width();
     if (tw < 60) tw = 80;
 
-    pn(ANSI_BLUE "╭"); repeat_str("─", tw - 2); pn(ANSI_BLUE "╮" ANSI_RESET "\n");
-
     pl("", tw);
     {
         char buf[256];
@@ -907,10 +855,10 @@ static void print_help(const char *prog)
                  " \xe2\x80\x94 Transcode Detector   "
                  "Psychoacoustic audio authenticity analysis");
         int v = vis_len(buf);
-        printf(ANSI_BLUE "│" ANSI_RESET "  %s", buf);
-        int pad = tw - 4 - v;
+        printf("  %s", buf);
+        int pad = tw - 2 - v;
         if (pad > 0) repeat_char(' ', pad);
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("\n");
     }
     pl("", tw);
 
@@ -922,23 +870,19 @@ static void print_help(const char *prog)
         snprintf(buf, sizeof(buf),
                  ANSI_BOLD "Usage:" ANSI_RESET "  %s [options] [<audio-file> ...]", prog);
         int v = vis_len(buf);
-        printf(ANSI_BLUE "│" ANSI_RESET "  %s", buf);
-        int pad = tw - 4 - v;
+        printf("  %s", buf);
+        int pad = tw - 2 - v;
         if (pad > 0) repeat_char(' ', pad);
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("\n");
     }
     pl("", tw);
 
-    pn(ANSI_BLUE "│" ANSI_RESET "  " ANSI_BOLD "Options:" ANSI_RESET);
-    repeat_char(' ', tw - 12);
-    pn(ANSI_BLUE "│" ANSI_RESET "\n");
+    printf("  " ANSI_BOLD "Options:" ANSI_RESET);
+    printf("\n");
 
 #define OPT(fmt, desc) do { \
-    printf(ANSI_BLUE "│" ANSI_RESET "    " ANSI_GREEN fmt ANSI_RESET "  %s", desc); \
-    int v = 1 + 4 + (int)strlen(fmt) + 2 + vis_len(desc); \
-    int pad = tw - 1 - v; \
-    if (pad > 0) repeat_char(' ', pad); \
-    printf(ANSI_BLUE "│" ANSI_RESET "\n"); \
+    printf("    " ANSI_GREEN fmt ANSI_RESET "  %s", desc); \
+    printf("\n"); \
 } while (0)
 
     {
@@ -949,11 +893,8 @@ static void print_help(const char *prog)
     {
         char buf[80];
         snprintf(buf, sizeof(buf), ANSI_DIM "  Lower = fewer, higher = more" ANSI_RESET);
-        int v = 1 + 4 + vis_len(buf);
-        printf(ANSI_BLUE "│" ANSI_RESET "    %s", buf);
-        int pad = tw - 1 - v;
-        if (pad > 0) repeat_char(' ', pad);
-        printf(ANSI_BLUE "│" ANSI_RESET "\n");
+        printf("    %s", buf);
+        printf("\n");
     }
     {
         char buf[80];
@@ -974,8 +915,6 @@ static void print_help(const char *prog)
     OPT("-h, --help",         "Show this help screen");
 
 #undef OPT
-
-    pn(ANSI_BLUE "╰"); repeat_str("─", tw - 2); pn(ANSI_BLUE "╯" ANSI_RESET "\n");
 }
 
 static void maybe_remove(const char *filename, int peak_db_neg90,