/***************************************************************************** levelmeters.c - Stereo level meters Copyright (C) 2000 by Jaroslav Kysela 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. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ******************************************************************************/ #include "envy24control.h" static GdkGC *penGreenShadow[21] = { NULL, }; static GdkGC *penGreenLight[21] = { NULL, }; static GdkGC *penOrangeShadow[21] = { NULL, }; static GdkGC *penOrangeLight[21] = { NULL, }; static GdkGC *penRedShadow[21] = { NULL, }; static GdkGC *penRedLight[21] = { NULL, }; static GdkPixmap *pixmap[21] = { NULL, }; static snd_ctl_elem_value_t *peaks; extern int input_channels, output_channels, pcm_output_channels, spdif_channels, view_spdif_playback; static void update_peak_switch(void) { int err; if ((err = snd_ctl_elem_read(ctl, peaks)) < 0) g_print("Unable to read peaks: %s\n", snd_strerror(err)); } static void get_levels(int idx, int *l1, int *l2) { *l1 = *l2 = 0; if (idx == 0) { *l1 = snd_ctl_elem_value_get_integer(peaks, 20); *l2 = snd_ctl_elem_value_get_integer(peaks, 21); } else { *l1 = *l2 = snd_ctl_elem_value_get_integer(peaks, idx - 1); } } static GdkGC *get_pen(int idx, int nRed, int nGreen, int nBlue) { GdkColor *c; GdkGC *gc; c = (GdkColor *)g_malloc(sizeof(GdkColor)); c->red = nRed; c->green = nGreen; c->blue = nBlue; gdk_color_alloc(gdk_colormap_get_system(), c); gc = gdk_gc_new(pixmap[idx]); gdk_gc_set_foreground(gc, c); return gc; } static int get_index(gchar *name) { int result; if (!strcmp(name, "DigitalMixer")) return 0; result = atoi(name + 5); if (result < 1 || result > 20) { g_print("Wrong drawing area ID: %s\n", name); gtk_main_quit(); } return result; } static void redraw_meters(int idx, int width, int height, int level1, int level2) { int stereo = idx == 0; int segment_width = stereo ? (width / 2) - 8 : width - 12; int segments = (height - 6) / 4; int green_segments = (segments / 4) * 3; int red_segments = 2; int orange_segments = segments - green_segments - red_segments; int seg; int segs_on1 = ((segments * level1) + 128) / 255; int segs_on2 = ((segments * level2) + 128) / 255; // g_print("segs_on1 = %i (%i), segs_on2 = %i (%i)\n", segs_on1, level1, segs_on2, level2); for (seg = 0; seg < green_segments; seg++) { gdk_draw_rectangle(pixmap[idx], segs_on1 > 0 ? penGreenLight[idx] : penGreenShadow[idx], TRUE, 6, 3 + ((segments - seg - 1) * 4), segment_width, 3); if (stereo) gdk_draw_rectangle(pixmap[idx], segs_on2 > 0 ? penGreenLight[idx] : penGreenShadow[idx], TRUE, 2 + (width / 2), 3 + ((segments - seg - 1) * 4), segment_width, 3); segs_on1--; segs_on2--; } for (seg = green_segments; seg < green_segments + orange_segments; seg++) { gdk_draw_rectangle(pixmap[idx], segs_on1 > 0 ? penOrangeLight[idx] : penOrangeShadow[idx], TRUE, 6, 3 + ((segments - seg - 1) * 4), segment_width, 3); if (stereo) gdk_draw_rectangle(pixmap[idx], segs_on2 > 0 ? penOrangeLight[idx] : penOrangeShadow[idx], TRUE, 2 + (width / 2), 3 + ((segments - seg - 1) * 4), segment_width, 3); segs_on1--; segs_on2--; } for (seg = green_segments + orange_segments; seg < segments; seg++) { gdk_draw_rectangle(pixmap[idx], segs_on1 > 0 ? penRedLight[idx] : penRedShadow[idx], TRUE, 6, 3 + ((segments - seg - 1) * 4), segment_width, 3); if (stereo) gdk_draw_rectangle(pixmap[idx], segs_on2 > 0 ? penRedLight[idx] : penRedShadow[idx], TRUE, 2 + (width / 2), 3 + ((segments - seg - 1) * 4), segment_width, 3); segs_on1--; segs_on2--; } } gint level_meters_configure_event(GtkWidget *widget, GdkEventConfigure *event) { int idx = get_index(gtk_widget_get_name(widget)); if (pixmap[idx] != NULL) gdk_pixmap_unref(pixmap[idx]); pixmap[idx] = gdk_pixmap_new(widget->window, widget->allocation.width, widget->allocation.height, -1); penGreenShadow[idx] = get_pen(idx, 0, 0x77ff, 0); penGreenLight[idx] = get_pen(idx, 0, 0xffff, 0); penOrangeShadow[idx] = get_pen(idx, 0xddff, 0x55ff, 0); penOrangeLight[idx] = get_pen(idx, 0xffff, 0x99ff, 0); penRedShadow[idx] = get_pen(idx, 0xaaff, 0, 0); penRedLight[idx] = get_pen(idx, 0xffff, 0, 0); gdk_draw_rectangle(pixmap[idx], widget->style->black_gc, TRUE, 0, 0, widget->allocation.width, widget->allocation.height); // g_print("configure: %i:%i\n", widget->allocation.width, widget->allocation.height); redraw_meters(idx, widget->allocation.width, widget->allocation.height, 0, 0); return TRUE; } gint level_meters_expose_event(GtkWidget *widget, GdkEventExpose *event) { int idx = get_index(gtk_widget_get_name(widget)); int l1, l2; get_levels(idx, &l1, &l2); redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2); gdk_draw_pixmap(widget->window, widget->style->black_gc, pixmap[idx], event->area.x, event->area.y, event->area.x, event->area.y, event->area.width, event->area.height); return FALSE; } gint level_meters_timeout_callback(gpointer data) { GtkWidget *widget; int idx, l1, l2; update_peak_switch(); for (idx = 0; idx <= pcm_output_channels; idx++) { get_levels(idx, &l1, &l2); widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1]; if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) { redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2); gdk_draw_pixmap(widget->window, widget->style->black_gc, pixmap[idx], 0, 0, 0, 0, widget->allocation.width, widget->allocation.height); } } if (view_spdif_playback) { for (idx = MAX_PCM_OUTPUT_CHANNELS + 1; idx <= MAX_OUTPUT_CHANNELS + spdif_channels; idx++) { get_levels(idx, &l1, &l2); widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1]; if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) { redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2); gdk_draw_pixmap(widget->window, widget->style->black_gc, pixmap[idx], 0, 0, 0, 0, widget->allocation.width, widget->allocation.height); } } } for (idx = MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + 1; idx <= input_channels + MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS; idx++) { get_levels(idx, &l1, &l2); widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1]; if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) { redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2); gdk_draw_pixmap(widget->window, widget->style->black_gc, pixmap[idx], 0, 0, 0, 0, widget->allocation.width, widget->allocation.height); } } for (idx = MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + MAX_INPUT_CHANNELS + 1; \ idx <= spdif_channels + MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + MAX_INPUT_CHANNELS; idx++) { get_levels(idx, &l1, &l2); widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1]; if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) { redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2); gdk_draw_pixmap(widget->window, widget->style->black_gc, pixmap[idx], 0, 0, 0, 0, widget->allocation.width, widget->allocation.height); } } return TRUE; } void level_meters_reset_peaks(GtkButton *button, gpointer data) { } void level_meters_init(void) { int err; snd_ctl_elem_value_malloc(&peaks); snd_ctl_elem_value_set_interface(peaks, SND_CTL_ELEM_IFACE_PCM); snd_ctl_elem_value_set_name(peaks, "Multi Track Peak"); if ((err = snd_ctl_elem_read(ctl, peaks)) < 0) /* older ALSA driver, using MIXER type */ snd_ctl_elem_value_set_interface(peaks, SND_CTL_ELEM_IFACE_MIXER); } void level_meters_postinit(void) { level_meters_timeout_callback(NULL); }