From 18511f851e547861162cdd41516e7eb673c62cb1 Mon Sep 17 00:00:00 2001 From: Johannes Mueller Date: Sun, 17 Jun 2018 11:42:49 +0200 Subject: 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 --- libs/plugins/a-comp.lv2/a-comp.c | 173 ++-------------------------- libs/plugins/a-comp.lv2/wscript | 4 +- libs/plugins/a-exp.lv2/a-exp.c | 190 +++---------------------------- libs/plugins/a-exp.lv2/wscript | 2 +- libs/plugins/shared/dynamic_display.c | 205 ++++++++++++++++++++++++++++++++++ 5 files changed, 233 insertions(+), 341 deletions(-) create mode 100644 libs/plugins/shared/dynamic_display.c diff --git a/libs/plugins/a-comp.lv2/a-comp.c b/libs/plugins/a-comp.lv2/a-comp.c index 678ab95cd1..1c33ef77e5 100644 --- a/libs/plugins/a-comp.lv2/a-comp.c +++ b/libs/plugins/a-comp.lv2/a-comp.c @@ -521,6 +521,9 @@ comp_curve (const AComp* self, float xg) { return yg; } + +#include "dynamic_display.c" + static void render_inline_full (cairo_t* cr, const AComp* self) { @@ -529,76 +532,16 @@ render_inline_full (cairo_t* cr, const AComp* self) const float makeup_thres = self->v_thresdb + self->v_makeup; - // 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); + draw_grid (cr, w,h); - 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); if (self->v_thresdb < 0) { const float y = -.5 + floorf (h * ((makeup_thres - 10.f) / -70.f)); cairo_move_to (cr, 0, y); cairo_line_to (cr, w, y); cairo_stroke (cr); } - // 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); - } - - { // GR - 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 * self->v_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); - } + draw_GR_bar (cr, w,h, self->v_gainr); // draw state cairo_set_source_rgba (cr, .8, .8, .8, 1.0); @@ -659,108 +602,10 @@ render_inline_full (cairo_t* cr, const AComp* self) static void render_inline_only_bars (cairo_t* cr, const AComp* self) { - const float w = self->w; - const float h = self->h; - - 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 = (self->v_gainr > 60.f) ? wd : wd * self->v_gainr * (1.f/60.f); - cairo_rectangle (cr, x1+wd-w_gr, y2, w_gr, ht); - cairo_fill (cr); - - if (self->v_lvl_in > -60.f) { - if (self->v_lvl_out > 6.f) { - cairo_set_source_rgba (cr, 0.75, 0.0, 0.0, 1.0); - } else if (self->v_lvl_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 = (self->v_lvl_in > 10.f) ? wd : wd * (60.f+self->v_lvl_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+self->v_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 = self->v_thresdb * (1.f - 1.f/self->v_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 (self->v_peakdb > -60.f) { - cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0); - const float pk = (self->v_peakdb > 10.f) ? x1+wd : wd * (60.f+self->v_peakdb) / 70.f; - cairo_move_to (cr, pk, y1); - cairo_line_to (cr, pk, y1+ht); - cairo_stroke (cr); - } + draw_inline_bars (cr, self->w, self->h, + self->v_thresdb, self->v_ratio, + self->v_peakdb, self->v_gainr, + self->v_lvl_in, self->v_lvl_out); } static LV2_Inline_Display_Image_Surface * diff --git a/libs/plugins/a-comp.lv2/wscript b/libs/plugins/a-comp.lv2/wscript index f0ebb1d33d..e450e919f0 100644 --- a/libs/plugins/a-comp.lv2/wscript +++ b/libs/plugins/a-comp.lv2/wscript @@ -18,7 +18,7 @@ def configure(conf): if Options.options.lv2: autowaf.check_pkg(conf, 'lv2', atleast_version='1.0.0', uselib_store='LV2_1_0_0') - autowaf.check_pkg(conf, 'cairo', uselib_store='CAIRO', atleast_version='1.12.0') + autowaf.check_pkg(conf, 'cairo', uselib_store='CAIRO', atleast_version='1.12.0') def build(bld): bundle = 'a-comp.lv2' @@ -40,7 +40,7 @@ def build(bld): source = 'a-comp.c', name = 'a-comp', cflags = [ '-fPIC', bld.env['compiler_flags_dict']['c99'] ], - includes = [ '../../ardour' ], + includes = [ '../../ardour', '../shared' ], target = '../../LV2/%s/a-comp' % bundle, install_path = '${LV2DIR}/%s' % bundle, uselib = 'CAIRO', diff --git a/libs/plugins/a-exp.lv2/a-exp.c b/libs/plugins/a-exp.lv2/a-exp.c index 5f47656e25..9eca7b5d2f 100644 --- a/libs/plugins/a-exp.lv2/a-exp.c +++ b/libs/plugins/a-exp.lv2/a-exp.c @@ -515,6 +515,7 @@ exp_curve (const AExp* self, float xg) { return yg; } +#include "dynamic_display.c" static void render_inline_full (cairo_t* cr, const AExp* self) @@ -524,76 +525,26 @@ render_inline_full (cairo_t* cr, const AExp* self) const float makeup_thres = self->v_thresdb + self->v_makeup; - // 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)); + draw_grid (cr, w,h); - 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); if (self->v_thresdb < 0) { const float y = -.5 + floorf (h * ((makeup_thres - 10.f) / -70.f)); cairo_move_to (cr, 0, y); cairo_line_to (cr, w, y); cairo_stroke (cr); } - // 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); - } + draw_GR_bar (cr, w,h, self->v_gainr); - { // GR - 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 * self->v_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); - } + // draw peak input + cairo_set_source_rgba (cr, .8, .8, .8, 1.0); + cairo_set_line_width(cr, 1.0); + + const float peak_x = w * (1.f - (10.f-self->v_peakdb)/70.f); + const float peak_y = fminf (h * (exp_curve (self, self->v_peakdb) - 10.f) / -70.f, h); + + cairo_arc (cr, peak_x, peak_y, 3.f, 0.f, 2.f*M_PI); + cairo_fill (cr); // draw curve cairo_set_source_rgba (cr, .8, .8, .8, 1.0); @@ -639,125 +590,16 @@ render_inline_full (cairo_t* cr, const AExp* self) } cairo_fill (cr); - // draw peak input - cairo_set_source_rgba (cr, .0f, 1.f, 0.f, 1.0); - cairo_set_line_width(cr, 1.0); - - const float peak_x = w * (1.f - (10.f-self->v_peakdb)/70.f); - const float peak_y = h * (exp_curve (self, self->v_peakdb) - 10.f) / -70.f; - - cairo_move_to(cr, peak_x, h); - cairo_line_to(cr, peak_x, peak_y); - cairo_stroke (cr); - cairo_pattern_destroy (pat); // TODO cache pattern } static void render_inline_only_bars (cairo_t* cr, const AExp* self) { - const float w = self->w; - const float h = self->h; - - 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 = (self->v_gainr > 60.f) ? wd : wd * self->v_gainr * (1.f/60.f); - cairo_rectangle (cr, x1+wd-w_gr, y2, w_gr, ht); - cairo_fill (cr); - - if (self->v_lvl_in > -60.f) { - if (self->v_lvl_out > 10.f) { - cairo_set_source_rgba (cr, 0.75, 0.0, 0.0, 1.0); - } else if (self->v_lvl_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 = (self->v_lvl_in > 10.f) ? wd : wd * (60.f+self->v_lvl_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+self->v_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 = self->v_thresdb * (1.f - 1.f/self->v_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 (self->v_peakdb > -60.f) { - cairo_set_source_rgba (cr, 0.0, 1.0, 0.0, 1.0); - const float pk = (self->v_peakdb > 10.f) ? x1+wd : wd * (60.f+self->v_peakdb) / 70.f; - cairo_move_to (cr, pk, y1); - cairo_line_to (cr, pk, y1+ht); - cairo_stroke (cr); - } + draw_inline_bars (cr, self->w, self->h, + self->v_thresdb, self->v_ratio, + self->v_peakdb, self->v_gainr, + self->v_lvl_in, self->v_lvl_out); } diff --git a/libs/plugins/a-exp.lv2/wscript b/libs/plugins/a-exp.lv2/wscript index affd2675b7..27d2440086 100644 --- a/libs/plugins/a-exp.lv2/wscript +++ b/libs/plugins/a-exp.lv2/wscript @@ -40,7 +40,7 @@ def build(bld): source = 'a-exp.c', name = 'a-exp', cflags = [ '-fPIC', bld.env['compiler_flags_dict']['c99'] ], - includes = [ '../../ardour' ], + includes = [ '../../ardour', '../shared' ], target = '../../LV2/%s/a-exp' % bundle, install_path = '${LV2DIR}/%s' % bundle, uselib = 'CAIRO', 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 + * + * 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); + } +} -- cgit v1.2.3