Add prototype for CH3 parameter drawing

2 files changed, 139 insertions, 19 deletions

diff --git a/src/sequencer.c b/src/sequencer.c
index d31475e..0c2f2a5 100644
--- a/src/sequencer.c
+++ b/src/sequencer.c
@@ -105,30 +105,27 @@ static const u32 channel_buttons[] = {
     0x0f080808, 0x0808080f,
 };
 
+static const u32 default_wave_buttons[] = {
+    0xff013149, 0x850101ff, 0x3f202028, 0x2423203f,
+    0xff016151, 0x49c501ff, 0x3f202c2a, 0x2928203f,
+    0xff017d45, 0x45c501ff, 0x3f202828, 0x282f203f,
+    0xff014911, 0x812501ff, 0x3f202128, 0x2420203f,
+};
+
 //
 // Wave data.
 //
 
-// TODO: Make them u32.
-static const u8 sine_wave[16] = {
-    0x89, 0xBC, 0xDE, 0xEF,
-    0xFE, 0xED, 0xCB, 0x98,
-    0x76, 0x43, 0x21, 0x10,
-    0x01, 0x12, 0x34, 0x67,
+static const u32 sine_wave[16] = {
+    0xefdebc89, 0x98cbedfe, 0x10214376, 0x67341201,
 };
 
-static const u8 saw_wave[16] = {
-    0x01, 0x23, 0x45, 0x67,
-    0x89, 0xab, 0xcd, 0xef,
-    0x01, 0x23, 0x45, 0x67,
-    0x89, 0xab, 0xcd, 0xef,
+static const u32 saw_wave[16] = {
+    0x67452301, 0xefcdab89, 0x67452301, 0xefcdab89,
 };
 
-static const u8 square_wave[16] = {
-    0xff, 0xff, 0xff, 0xff,
-    0xff, 0xff, 0xff, 0xff,
-    0x00, 0x00, 0x00, 0x00,
-    0x00, 0x00, 0x00, 0x00,
+static const u32 square_wave[16] = {
+    0xffffffff, 0xffffffff, 0x00000000, 0x00000000,
 };
 
 //
@@ -276,10 +273,10 @@ static ChannelWave ch3 = {
     },
     .params = {
         {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
+        {3, 0, {0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
         {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
-        {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
-        {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
-        {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
+        {3, 0, {0x00000000, 0xFFFFFFFF, 0x00000000, 0xFFFFFFFF},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
+        {3, 0, {0x00000000, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
         {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
         {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
         {3, 0, {0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000},{0xFFFFFFFF, 0x00000000, 0xFFFFFFFF, 0x00000000}},
@@ -558,6 +555,103 @@ draw_piano(void) {
     }
 }
 
+#define PARAMS_W 170
+#define PARAMS_H 48
+#define PARAMS_START_X 35
+#define PARAMS_START_Y 12
+
+IWRAM_CODE
+void
+draw_wave_pattern(u8 *pattern, int x, int y, u8 clr) {
+    for (size_t i = 0; i < 16; ++i) {
+        u8 byte = pattern[i];
+        u8 first = (byte >> 4) & 0xF;
+        u8 second = byte & 0xF;
+        u8 a = x + i * 4;
+        u8 b = y + 16;
+        draw_pixel(a, b - first, clr);
+        draw_pixel(a + 1, b - first, clr);
+        draw_pixel(a + 2, b - second, clr);
+        draw_pixel(a + 3, b - second, clr);
+    }
+}
+
+IWRAM_CODE
+void
+clear_parameters(void) {
+    size_t x0 = PARAMS_START_X;
+    size_t y0 = PARAMS_START_Y;
+    size_t x1 = PARAMS_START_X + PARAMS_W;
+    size_t y1 = PARAMS_START_Y + PARAMS_H;
+    draw_filled_rect(x0, y0, x1, y1, COL_BG);
+}
+
+IWRAM_CODE
+void
+draw_parameters(void) {
+    // Clear until the default parameters, since those don't change.
+    {
+        size_t x0 = PARAMS_START_X;
+        size_t y0 = PARAMS_START_Y;
+        size_t x1 = PARAMS_START_X + PARAMS_W;
+        size_t y1 = PARAMS_START_Y + PARAMS_H - 8;
+        draw_filled_rect(x0, y0, x1, y1, COL_BG);
+    }
+
+    // TODO: Move to VRAM and decompress at the beginning.
+    Tile wave_tiles[4 * 2] = {0};
+    unpack_tiles(default_wave_buttons, wave_tiles, 4 * 2);
+
+    // Draw current wave data.
+    {
+        u8 *wave_a = ch3.params[trig_selection_loc].wave_a;
+        u8 *wave_b = ch3.params[trig_selection_loc].wave_b;
+
+        size_t x = PARAMS_START_X;
+        size_t y = PARAMS_START_Y + 2;
+
+        // Wave Patterns.
+        draw_wave_pattern(wave_a, x, y, COL_RED);
+        draw_wave_pattern(wave_b, x + 70, y, COL_CYAN);
+
+        // Wave text.
+        x -= 2;
+        txt_drawf_small("%02x%02x%02x%02x", x, y + 20, 4, COL_FG,
+                wave_a[0], wave_a[1], wave_a[2], wave_a[3]);
+        txt_drawf_small("%02x%02x%02x%02x", x + 34, y + 20, 4, COL_FG,
+                wave_a[4], wave_a[5], wave_a[6], wave_a[7]);
+        txt_drawf_small("%02x%02x%02x%02x", x, y + 28, 4, COL_FG,
+                wave_a[8], wave_a[9], wave_a[10], wave_a[11]);
+        txt_drawf_small("%02x%02x%02x%02x", x + 34, y + 28, 4, COL_FG,
+                wave_a[12], wave_a[13], wave_a[14], wave_a[15]);
+
+        x += 70;
+        txt_drawf_small("%02x%02x%02x%02x", x, y + 20, 4, COL_FG,
+                wave_b[0], wave_b[1], wave_b[2], wave_b[3]);
+        txt_drawf_small("%02x%02x%02x%02x", x + 34, y + 20, 4, COL_FG,
+                wave_b[4], wave_b[5], wave_b[6], wave_b[7]);
+        txt_drawf_small("%02x%02x%02x%02x", x, y + 28, 4, COL_FG,
+                wave_b[8], wave_b[9], wave_b[10], wave_b[11]);
+        txt_drawf_small("%02x%02x%02x%02x", x + 34, y + 28, 4, COL_FG,
+                wave_b[12], wave_b[13], wave_b[14], wave_b[15]);
+    }
+
+    // Draw default wave buttons.
+    {
+        size_t x = PARAMS_START_X;
+        size_t y = PARAMS_START_Y + PARAMS_H - 7;
+        for (size_t i = 0, k = 0; i < 4 * 2; i += 2, k++) {
+            draw_tile(x + 17 * k,     y, wave_tiles + i, COL_FG, true);
+            draw_tile(x + 17 * k + 8, y, wave_tiles + i + 1, COL_FG, true);
+        }
+        for (size_t i = 0, k = 0; i < 4 * 2; i += 2, k++) {
+            draw_tile(x + 17 * k + 70, y, wave_tiles + i, COL_FG, true);
+            draw_tile(x + 17 * k + 8 + 70, y, wave_tiles + i + 1, COL_FG, true);
+        }
+    }
+
+}
+
 void
 irq_timer(void) {
     if (ch1.active) {
@@ -721,6 +815,7 @@ handle_channel_selection(void) {
         draw_trig_cursor(trig_selection_loc, COL_BLUE);
         TriggerNote *trig = get_current_trig();
         draw_note(trig->note, COL_BLUE);
+        draw_parameters();
     } else if (key_tap(KEY_UP)) {
         draw_channel_cursor(channel_selection_loc, COL_BG);
         if (channel_selection_loc == 0) {
@@ -1043,6 +1138,7 @@ handle_trigger_selection(void) {
             draw_note(trig->note, COL_FG);
             input_handler = handle_channel_selection;
             draw_channel_cursor(channel_selection_loc, COL_BLUE);
+            clear_parameters();
         } else {
             draw_trig_cursor(trig_selection_loc, COL_BG);
             draw_note(trig->note, COL_FG);
@@ -1050,6 +1146,7 @@ handle_trigger_selection(void) {
             trig = get_current_trig();
             draw_trig_cursor(trig_selection_loc, COL_BLUE);
             draw_note(trig->note, COL_BLUE);
+            draw_parameters();
         }
     } else if (key_tap(KEY_RIGHT)) {
         if (trig_selection_loc != 7) {
@@ -1059,6 +1156,7 @@ handle_trigger_selection(void) {
             trig = get_current_trig();
             draw_trig_cursor(trig_selection_loc, COL_BLUE);
             draw_note(trig->note, COL_BLUE);
+            draw_parameters();
         }
     } else if (key_tap(KEY_UP) || key_tap(KEY_DOWN)) {
         draw_trig_cursor(trig_selection_loc, COL_BG);
@@ -1067,6 +1165,7 @@ handle_trigger_selection(void) {
         trig = get_current_trig();
         draw_trig_cursor(trig_selection_loc, COL_BLUE);
         draw_note(trig->note, COL_BLUE);
+        draw_parameters();
     } else if (key_tap(KEY_A)) {
         // Switch to parameter selection.
         switch (channel_selection_loc) {
@@ -1126,6 +1225,7 @@ sequencer_init(void) {
     draw_piano();
     TriggerNote *trig = get_current_trig();
     draw_note(trig->note, COL_BLUE);
+    draw_parameters();
 
     // Initialize input handler.
     channel_selection_loc = 2; // DEBUG: Starting on CH3
diff --git a/src/text/text.h b/src/text/text.h
index 931227c..647a021 100644
--- a/src/text/text.h
+++ b/src/text/text.h
@@ -136,4 +136,24 @@ txt_draws(char *msg, size_t x, size_t y, size_t spacing, u8 clr) {
                 txt_draws(buf, x, y, s, c); \
         }
 
+// Small font is located after the initial ASCII characters, and only supports
+// lowercase characters.
+// NOTE: Slow, we should do this with a LUT.
+#define txt_drawf_small(msg, x, y, s, c, ...) \
+        { \
+                char buf[256] = {0}; \
+                posprintf(buf, msg, ##__VA_ARGS__); \
+                for (size_t i = 0; i < 256; i++) { \
+                    if (buf[i] == 0) { \
+                        break; \
+                    } \
+                    if (buf[i] < 'a') { \
+                buf[i] += 16 * 6; \
+                    } else { \
+                buf[i] += 16 * 4; \
+                    }\
+                } \
+                txt_draws(buf, x, y, s, c); \
+        }
+
 #endif // TEXT_H