-
Notifications
You must be signed in to change notification settings - Fork 90
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Loading status checks…
simple piano roll view
Showing
11 changed files
with
305 additions
and
33 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,169 @@ | ||
| // | ||
| // Created by jonne on 9/8/24. | ||
| // | ||
|
|
||
| #include "fx_piano.h" | ||
| #include "render.h" | ||
| #include "inline_font.h" | ||
| #include <SDL2/SDL.h> | ||
|
|
||
| struct active_notes { | ||
| uint8_t note; | ||
| uint8_t sharp; | ||
| uint8_t octave; | ||
| }; | ||
|
|
||
| static int width = 320; | ||
| static int height = 240; | ||
| static SDL_Texture *fx_texture; | ||
| static uint32_t *framebuffer; | ||
| struct active_notes active_notes[8] = {0}; | ||
| static int is_initialized = 0; | ||
|
|
||
| static const uint32_t bgcolor = 0xA0000000; | ||
|
|
||
| // Pastel Rainbow from https://colorkit.co/palettes/8-colors/ | ||
| uint32_t palette[8] = {0xEFFFADAD, 0xEFFFD6A5, 0xEFFDFFB6, 0xEFCAFFBF, | ||
| 0xEF9BF6FF, 0xEFA0C4FF, 0xEFBDB2FF, 0xEFFFC6FF}; | ||
|
|
||
| static int get_active_note_from_channel(int ch) { | ||
| if (ch >= 0 && ch < 8) | ||
| return active_notes[ch].note + active_notes[ch].sharp + active_notes[ch].octave; | ||
| else | ||
| return 0; | ||
| } | ||
|
|
||
| void fx_piano_init(SDL_Texture *output_texture) { | ||
| fx_texture = output_texture; | ||
| SDL_QueryTexture(fx_texture, NULL, NULL, &width, &height); | ||
| framebuffer = SDL_malloc(sizeof(uint32_t) * width * height); | ||
| SDL_memset4(framebuffer, bgcolor, width * height); | ||
| is_initialized = 1; | ||
| } | ||
|
|
||
| void fx_piano_update() { | ||
| //Shift everything up by one row and clear bottom row | ||
| for (int y = 1; y < height; y++) { | ||
| for (int x = 0; x < width; x++) { | ||
| int buffer_pos = x + (y * width); | ||
| // Top rows have a fading alpha value | ||
| if (y<60 && (framebuffer[buffer_pos] >> 24) > 0x04){ | ||
| framebuffer[buffer_pos-width] = framebuffer[buffer_pos]-((0x05 << 24)); | ||
| } else { | ||
| framebuffer[buffer_pos-width] = framebuffer[buffer_pos]; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for (int x = 0; x < width; x++) { | ||
| framebuffer[width*(height-1)+x] = bgcolor; | ||
| framebuffer[x] = bgcolor; | ||
| } | ||
|
|
||
| int notes[8]; | ||
| for (int i = 0; i < 8; i++) { | ||
| notes[i] = get_active_note_from_channel(i); | ||
|
|
||
| int last_row = (height-1)*width; | ||
| int spacing = width / 128; | ||
| if (notes[i]>0) { | ||
| int pos = last_row + (notes[i] * spacing); | ||
| uint32_t color = (framebuffer[pos] + palette[i]) | (0xCF <<24); | ||
| for (int bar_width = 0; bar_width < spacing; bar_width++) { | ||
| framebuffer[pos++] = color; | ||
| } | ||
| framebuffer[pos] = color | (0x20 << 24); | ||
| } | ||
| } | ||
|
|
||
| SDL_UpdateTexture(fx_texture, NULL, framebuffer, | ||
| width * sizeof(framebuffer[0])); | ||
| }; | ||
|
|
||
| void fx_piano_destroy() { | ||
| if (is_initialized) { | ||
| SDL_free(framebuffer); | ||
| is_initialized = 0; | ||
| } | ||
| } | ||
|
|
||
| /* Converts the note characters displayed on M8 screen to hex values for use in | ||
| * visualizers */ | ||
| int note_to_hex(int note_char) { | ||
| switch (note_char) { | ||
| case 45: // - = note off | ||
| return 0x00; | ||
| case 67: // C | ||
| return 0x01; | ||
| case 68: // D | ||
| return 0x03; | ||
| case 69: // E | ||
| return 0x05; | ||
| case 70: // F | ||
| return 0x06; | ||
| case 71: // G | ||
| return 0x08; | ||
| case 65: // A | ||
| return 0x0A; | ||
| case 66: // B | ||
| return 0x0C; | ||
| default: | ||
| return 0x00; | ||
| } | ||
| } | ||
|
|
||
| // Updates the active notes information array with the current command's data | ||
| void update_active_notes_data(struct draw_character_command *command, int font_mode) { | ||
|
|
||
| int line_spacing; | ||
| int character_spacing; | ||
| int playback_info_offset_x; | ||
|
|
||
| switch (font_mode) { | ||
| case 1: | ||
| case 4: | ||
| // Note name sidebar not visible all the time on MK1 / MK2 | ||
| return; | ||
| case 2: | ||
| case 3: | ||
| line_spacing = 14; | ||
| character_spacing = 12; | ||
| playback_info_offset_x = 432; | ||
| break; | ||
| default: | ||
| line_spacing = 10; | ||
| character_spacing = 8; | ||
| playback_info_offset_x = 288; | ||
| break; | ||
| } | ||
|
|
||
| // Channels are 10 pixels apart, starting from y=70 | ||
| int channel_number = command->pos.y / line_spacing - 7; | ||
|
|
||
|
|
||
| // Note playback information starts from X=288 | ||
| if (command->pos.x == playback_info_offset_x) { | ||
| active_notes[channel_number].note = note_to_hex(command->c); | ||
| } | ||
|
|
||
| // Sharp notes live at x = 296 | ||
| if (command->pos.x == playback_info_offset_x + character_spacing && !strcmp((char *)&command->c, "#")) | ||
| active_notes[channel_number].sharp = 1; | ||
| else | ||
| active_notes[channel_number].sharp = 0; | ||
|
|
||
| // Note octave, x = 304 | ||
| if (command->pos.x == playback_info_offset_x + 2*character_spacing) { | ||
| int8_t octave = command->c - 48; | ||
|
|
||
| // Octaves A-B | ||
| if (octave == 17 || octave == 18) | ||
| octave -= 7; | ||
|
|
||
| // If octave hasn't been applied to the note yet, do it | ||
| if (octave > 0) | ||
| active_notes[channel_number].octave = octave * 0x0C; | ||
| else | ||
| active_notes[channel_number].octave = 0; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| // | ||
| // Created by jonne on 9/8/24. | ||
| // | ||
|
|
||
| #ifndef FX_PIANO_H | ||
| #define FX_PIANO_H | ||
|
|
||
| #include "SDL_render.h" | ||
| #include "command.h" | ||
|
|
||
| void fx_piano_init(SDL_Texture *output_texture); | ||
| void fx_piano_update(); | ||
| void fx_piano_destroy(); | ||
|
|
||
| void update_active_notes_data(struct draw_character_command *command, int font_mode); | ||
|
|
||
| #endif //FX_PIANO_H |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters