diff options
author | Johannes Mueller <github@johannes-mueller.org> | 2018-06-17 11:42:49 +0200 |
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committer | Johannes Mueller <github@johannes-mueller.org> | 2018-06-20 22:57:41 +0200 |
commit | 18511f851e547861162cdd41516e7eb673c62cb1 (patch) | |
tree | 014802bf6000dfd9725f53866f17a9be3114508c /libs/plugins/shared | |
parent | 0c64eacef5a9d6484e80a4dbbb726319049d6926 (diff) |
Put duplicate code of a-comp and a-expander into one file ...
... for better maintainability
consolidated duplicate code:
* drawing the dB-grid of a-comp's and a-expander's full display
* drawing the gain reduction bar of a-comp's and a-expander's full display
* the entire only-bars display
Diffstat (limited to 'libs/plugins/shared')
-rw-r--r-- | libs/plugins/shared/dynamic_display.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/libs/plugins/shared/dynamic_display.c b/libs/plugins/shared/dynamic_display.c new file mode 100644 index 0000000000..d274aa9d91 --- /dev/null +++ b/libs/plugins/shared/dynamic_display.c @@ -0,0 +1,205 @@ +/* dynamic_screen.c + * Copyright (C) 2018 Johannes Mueller <github@johannes-mueller.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + + +/* Shared code for a-comp.c and a-exp.c + * + * This file contains some code that draws the basic layout of for the inline + * rendering of a-comp.c and a-exp.c. It is put into a shared file for better + * maintainability. It is not meant to be compiled as a individual compilation + * unit but to be included like + * + * #include "dynamic_screen.c" + * + */ + + +static inline void +draw_grid (cairo_t* cr, const float w, const float h) +{ + // clear background + cairo_rectangle (cr, 0, 0, w, h); + cairo_set_source_rgba (cr, .2, .2, .2, 1.0); + cairo_fill (cr); + + cairo_set_line_width(cr, 1.0); + + // draw grid 10dB steps + const double dash1[] = {1, 2}; + const double dash2[] = {1, 3}; + cairo_save (cr); + cairo_set_line_cap(cr, CAIRO_LINE_CAP_ROUND); + cairo_set_dash(cr, dash2, 2, 2); + cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 0.5); + + for (uint32_t d = 1; d < 7; ++d) { + const float x = -.5 + floorf (w * (d * 10.f / 70.f)); + const float y = -.5 + floorf (h * (d * 10.f / 70.f)); + + cairo_move_to (cr, x, 0); + cairo_line_to (cr, x, h); + cairo_stroke (cr); + + cairo_move_to (cr, 0, y); + cairo_line_to (cr, w, y); + cairo_stroke (cr); + } + cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 1.0); + cairo_set_dash(cr, dash1, 2, 2); + + // diagonal unity + cairo_move_to (cr, 0, h); + cairo_line_to (cr, w, 0); + cairo_stroke (cr); + cairo_restore (cr); + + { // 0, 0 + cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 0.5); + const float x = -.5 + floorf (w * (60.f / 70.f)); + const float y = -.5 + floorf (h * (10.f / 70.f)); + cairo_move_to (cr, x, 0); + cairo_line_to (cr, x, h); + cairo_stroke (cr); + cairo_move_to (cr, 0, y); + cairo_line_to (cr, w, y); + cairo_stroke (cr); + } +} + +static inline void +draw_GR_bar (cairo_t* cr, const float w, const float h, const float gainr) +{ + const float x = -.5 + floorf (w * (62.5f / 70.f)); + const float y = -.5 + floorf (h * (10.0f / 70.f)); + const float wd = floorf (w * (5.f / 70.f)); + const float ht = floorf (h * (55.f / 70.f)); + cairo_rectangle (cr, x, y, wd, ht); + cairo_fill (cr); + + const float h_gr = fminf (ht, floorf (h * gainr / 70.f)); + cairo_set_source_rgba (cr, 0.95, 0.0, 0.0, 1.0); + cairo_rectangle (cr, x, y, wd, h_gr); + cairo_fill (cr); + cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 0.5); + cairo_rectangle (cr, x, y, wd, ht); + cairo_set_source_rgba (cr, 0.75, 0.75, 0.75, 1.0); + cairo_stroke (cr); +} + +static inline void +draw_inline_bars (cairo_t* cr, const float w, const float h, + const float thresdb, const float ratio, + const float peakdb, const float gainr, + const float level_in, const float level_out) +{ + cairo_rectangle (cr, 0, 0, w, h); + cairo_set_source_rgba (cr, .2, .2, .2, 1.0); + cairo_fill (cr); + + + cairo_save (cr); + + const float ht = 0.25f * h; + + const float x1 = w*0.05; + const float wd = w - 2.0f*x1; + + const float y1 = 0.17*h; + const float y2 = h - y1 - ht; + + cairo_set_source_rgba (cr, 0.5, 0.5, 0.5, 0.5); + + cairo_rectangle (cr, x1, y1, wd, ht); + cairo_fill (cr); + + cairo_rectangle (cr, x1, y2, wd, ht); + cairo_fill (cr); + + cairo_set_source_rgba (cr, 0.75, 0.0, 0.0, 1.0); + const float w_gr = (gainr > 60.f) ? wd : wd * gainr * (1.f/60.f); + cairo_rectangle (cr, x1+wd-w_gr, y2, w_gr, ht); + cairo_fill (cr); + + if (level_in > -60.f) { + if (level_out > 6.f) { + cairo_set_source_rgba (cr, 0.75, 0.0, 0.0, 1.0); + } else if (level_out > 0.f) { + cairo_set_source_rgba (cr, 0.66, 0.66, 0.0, 1.0); + } else { + cairo_set_source_rgba (cr, 0.0, 0.66, 0.0, 1.0); + } + const float w_g = (level_in > 10.f) ? wd : wd * (60.f+level_in) / 70.f; + cairo_rectangle (cr, x1, y1, w_g, ht); + cairo_fill (cr); + } + + cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 1.0); + + const float tck = 0.33*ht; + + cairo_set_line_width (cr, .5); + + for (uint32_t d = 1; d < 7; ++d) { + const float x = x1 + (d * wd * (10.f / 70.f)); + + cairo_move_to (cr, x, y1); + cairo_line_to (cr, x, y1+tck); + + cairo_move_to (cr, x, y1+ht); + cairo_line_to (cr, x, y1+ht-tck); + + cairo_move_to (cr, x, y2); + cairo_line_to (cr, x, y2+tck); + + cairo_move_to (cr, x, y2+ht); + cairo_line_to (cr, x, y2+ht-tck); + } + + cairo_stroke (cr); + + const float x_0dB = x1 + wd*(60.f/70.f); + + cairo_move_to (cr, x_0dB, y1); + cairo_line_to (cr, x_0dB, y1+ht); + + cairo_rectangle (cr, x1, y1, wd, ht); + cairo_rectangle (cr, x1, y2, wd, ht); + cairo_stroke (cr); + + cairo_set_line_width (cr, 2.0); + + // visualize threshold + const float tr = x1 + wd * (60.f+thresdb) / 70.f; + cairo_set_source_rgba (cr, 0.95, 0.95, 0.0, 1.0); + cairo_move_to (cr, tr, y1); + cairo_line_to (cr, tr, y1+ht); + cairo_stroke (cr); + + // visualize ratio + const float reduced_0dB = thresdb * (1.f - 1.f/ratio); + const float rt = x1 + wd * (60.f+reduced_0dB) / 70.f; + cairo_set_source_rgba (cr, 0.95, 0.0, 0.0, 1.0); + cairo_move_to (cr, rt, y1); + cairo_line_to (cr, rt, y1+ht); + cairo_stroke (cr); + + // visualize in peak + if (peakdb > -60.f) { + cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0); + const float pk = (peakdb > 10.f) ? x1+wd : wd * (60.f+peakdb) / 70.f; + cairo_move_to (cr, pk, y1); + cairo_line_to (cr, pk, y1+ht); + cairo_stroke (cr); + } +} |