/*****************************************************************************
levelmeters.c - Stereo level meters
Copyright (C) 2000 by Jaroslav Kysela <perex@perex.cz>
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);
}