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https://github.com/alsa-project/alsa-tools.git
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4c11a92555
* The "Multi Track Peak" control is now of PCM type, to avoid confusing users in other alsa mixers. Signed-off-by: Pavel Hofman <pavel.hofman@ivitera.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
278 lines
8.5 KiB
C
278 lines
8.5 KiB
C
/*****************************************************************************
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levelmeters.c - Stereo level meters
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Copyright (C) 2000 by Jaroslav Kysela <perex@perex.cz>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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******************************************************************************/
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#include "envy24control.h"
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static GdkGC *penGreenShadow[21] = { NULL, };
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static GdkGC *penGreenLight[21] = { NULL, };
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static GdkGC *penOrangeShadow[21] = { NULL, };
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static GdkGC *penOrangeLight[21] = { NULL, };
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static GdkGC *penRedShadow[21] = { NULL, };
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static GdkGC *penRedLight[21] = { NULL, };
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static GdkPixmap *pixmap[21] = { NULL, };
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static snd_ctl_elem_value_t *peaks;
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extern int input_channels, output_channels, pcm_output_channels, spdif_channels, view_spdif_playback;
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static void update_peak_switch(void)
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{
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int err;
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if ((err = snd_ctl_elem_read(ctl, peaks)) < 0)
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g_print("Unable to read peaks: %s\n", snd_strerror(err));
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}
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static void get_levels(int idx, int *l1, int *l2)
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{
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*l1 = *l2 = 0;
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if (idx == 0) {
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*l1 = snd_ctl_elem_value_get_integer(peaks, 20);
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*l2 = snd_ctl_elem_value_get_integer(peaks, 21);
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} else {
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*l1 = *l2 = snd_ctl_elem_value_get_integer(peaks, idx - 1);
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}
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}
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static GdkGC *get_pen(int idx, int nRed, int nGreen, int nBlue)
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{
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GdkColor *c;
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GdkGC *gc;
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c = (GdkColor *)g_malloc(sizeof(GdkColor));
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c->red = nRed;
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c->green = nGreen;
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c->blue = nBlue;
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gdk_color_alloc(gdk_colormap_get_system(), c);
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gc = gdk_gc_new(pixmap[idx]);
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gdk_gc_set_foreground(gc, c);
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return gc;
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}
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static int get_index(gchar *name)
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{
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int result;
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if (!strcmp(name, "DigitalMixer"))
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return 0;
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result = atoi(name + 5);
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if (result < 1 || result > 20) {
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g_print("Wrong drawing area ID: %s\n", name);
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gtk_main_quit();
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}
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return result;
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}
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static void redraw_meters(int idx, int width, int height, int level1, int level2)
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{
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int stereo = idx == 0;
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int segment_width = stereo ? (width / 2) - 8 : width - 12;
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int segments = (height - 6) / 4;
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int green_segments = (segments / 4) * 3;
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int red_segments = 2;
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int orange_segments = segments - green_segments - red_segments;
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int seg;
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int segs_on1 = ((segments * level1) + 128) / 255;
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int segs_on2 = ((segments * level2) + 128) / 255;
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// g_print("segs_on1 = %i (%i), segs_on2 = %i (%i)\n", segs_on1, level1, segs_on2, level2);
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for (seg = 0; seg < green_segments; seg++) {
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gdk_draw_rectangle(pixmap[idx],
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segs_on1 > 0 ? penGreenLight[idx] : penGreenShadow[idx],
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TRUE,
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6, 3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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if (stereo)
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gdk_draw_rectangle(pixmap[idx],
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segs_on2 > 0 ? penGreenLight[idx] : penGreenShadow[idx],
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TRUE,
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2 + (width / 2),
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3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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segs_on1--;
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segs_on2--;
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}
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for (seg = green_segments; seg < green_segments + orange_segments; seg++) {
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gdk_draw_rectangle(pixmap[idx],
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segs_on1 > 0 ? penOrangeLight[idx] : penOrangeShadow[idx],
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TRUE,
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6, 3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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if (stereo)
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gdk_draw_rectangle(pixmap[idx],
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segs_on2 > 0 ? penOrangeLight[idx] : penOrangeShadow[idx],
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TRUE,
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2 + (width / 2),
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3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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segs_on1--;
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segs_on2--;
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}
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for (seg = green_segments + orange_segments; seg < segments; seg++) {
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gdk_draw_rectangle(pixmap[idx],
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segs_on1 > 0 ? penRedLight[idx] : penRedShadow[idx],
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TRUE,
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6, 3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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if (stereo)
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gdk_draw_rectangle(pixmap[idx],
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segs_on2 > 0 ? penRedLight[idx] : penRedShadow[idx],
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TRUE,
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2 + (width / 2),
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3 + ((segments - seg - 1) * 4),
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segment_width,
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3);
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segs_on1--;
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segs_on2--;
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}
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}
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gint level_meters_configure_event(GtkWidget *widget, GdkEventConfigure *event)
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{
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int idx = get_index(gtk_widget_get_name(widget));
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if (pixmap[idx] != NULL)
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gdk_pixmap_unref(pixmap[idx]);
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pixmap[idx] = gdk_pixmap_new(widget->window,
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widget->allocation.width,
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widget->allocation.height,
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-1);
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penGreenShadow[idx] = get_pen(idx, 0, 0x77ff, 0);
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penGreenLight[idx] = get_pen(idx, 0, 0xffff, 0);
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penOrangeShadow[idx] = get_pen(idx, 0xddff, 0x55ff, 0);
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penOrangeLight[idx] = get_pen(idx, 0xffff, 0x99ff, 0);
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penRedShadow[idx] = get_pen(idx, 0xaaff, 0, 0);
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penRedLight[idx] = get_pen(idx, 0xffff, 0, 0);
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gdk_draw_rectangle(pixmap[idx],
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widget->style->black_gc,
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TRUE,
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0, 0,
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widget->allocation.width,
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widget->allocation.height);
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// g_print("configure: %i:%i\n", widget->allocation.width, widget->allocation.height);
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, 0, 0);
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return TRUE;
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}
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gint level_meters_expose_event(GtkWidget *widget, GdkEventExpose *event)
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{
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int idx = get_index(gtk_widget_get_name(widget));
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int l1, l2;
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get_levels(idx, &l1, &l2);
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2);
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gdk_draw_pixmap(widget->window,
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widget->style->black_gc,
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pixmap[idx],
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event->area.x, event->area.y,
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event->area.x, event->area.y,
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event->area.width, event->area.height);
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return FALSE;
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}
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gint level_meters_timeout_callback(gpointer data)
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{
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GtkWidget *widget;
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int idx, l1, l2;
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update_peak_switch();
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for (idx = 0; idx <= pcm_output_channels; idx++) {
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get_levels(idx, &l1, &l2);
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widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1];
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if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) {
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2);
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gdk_draw_pixmap(widget->window,
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widget->style->black_gc,
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pixmap[idx],
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0, 0,
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0, 0,
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widget->allocation.width, widget->allocation.height);
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}
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}
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if (view_spdif_playback) {
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for (idx = MAX_PCM_OUTPUT_CHANNELS + 1; idx <= MAX_OUTPUT_CHANNELS + spdif_channels; idx++) {
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get_levels(idx, &l1, &l2);
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widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1];
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if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) {
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2);
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gdk_draw_pixmap(widget->window,
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widget->style->black_gc,
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pixmap[idx],
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0, 0,
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0, 0,
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widget->allocation.width, widget->allocation.height);
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}
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}
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}
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for (idx = MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + 1; idx <= input_channels + MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS; idx++) {
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get_levels(idx, &l1, &l2);
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widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1];
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if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) {
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2);
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gdk_draw_pixmap(widget->window,
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widget->style->black_gc,
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pixmap[idx],
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0, 0,
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0, 0,
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widget->allocation.width, widget->allocation.height);
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}
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}
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for (idx = MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + MAX_INPUT_CHANNELS + 1; \
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idx <= spdif_channels + MAX_PCM_OUTPUT_CHANNELS + MAX_SPDIF_CHANNELS + MAX_INPUT_CHANNELS; idx++) {
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get_levels(idx, &l1, &l2);
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widget = idx == 0 ? mixer_mix_drawing : mixer_drawing[idx-1];
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if (GTK_WIDGET_VISIBLE(widget) && (pixmap[idx] != NULL)) {
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redraw_meters(idx, widget->allocation.width, widget->allocation.height, l1, l2);
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gdk_draw_pixmap(widget->window,
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widget->style->black_gc,
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pixmap[idx],
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0, 0,
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0, 0,
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widget->allocation.width, widget->allocation.height);
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}
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}
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return TRUE;
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}
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void level_meters_reset_peaks(GtkButton *button, gpointer data)
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{
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}
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void level_meters_init(void)
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{
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int err;
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snd_ctl_elem_value_malloc(&peaks);
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snd_ctl_elem_value_set_interface(peaks, SND_CTL_ELEM_IFACE_PCM);
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snd_ctl_elem_value_set_name(peaks, "Multi Track Peak");
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if ((err = snd_ctl_elem_read(ctl, peaks)) < 0)
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/* older ALSA driver, using MIXER type */
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snd_ctl_elem_value_set_interface(peaks,
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SND_CTL_ELEM_IFACE_MIXER);
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}
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void level_meters_postinit(void)
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{
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level_meters_timeout_callback(NULL);
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}
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