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Diffstat (limited to 'mate-volume-control/gvc-utils.c')
| -rw-r--r-- | mate-volume-control/gvc-utils.c | 335 |
1 files changed, 335 insertions, 0 deletions
diff --git a/mate-volume-control/gvc-utils.c b/mate-volume-control/gvc-utils.c new file mode 100644 index 0000000..d45a217 --- /dev/null +++ b/mate-volume-control/gvc-utils.c @@ -0,0 +1,335 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright (C) 2014 Michal Ratajsky <[email protected]> + * + * 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 St, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "config.h" + +#include <glib.h> +#include <glib/gi18n.h> +#include <gtk/gtk.h> + +#include <libmatemixer/matemixer.h> + +#include "gvc-utils.h" + +/* libcanberra requires a PulseAudio channel name to be given to its + * CA_PROP_CANBERRA_FORCE_CHANNEL property. + * + * The strings here are copied from PulseAudio source code to avoid depending + * on libpulse. */ +static const gchar *pulse_position[MATE_MIXER_CHANNEL_MAX] = { + [MATE_MIXER_CHANNEL_MONO] = "mono", + [MATE_MIXER_CHANNEL_FRONT_LEFT] = "front-left", + [MATE_MIXER_CHANNEL_FRONT_RIGHT] = "front-right", + [MATE_MIXER_CHANNEL_FRONT_CENTER] = "front-center", + [MATE_MIXER_CHANNEL_LFE] = "lfe", + [MATE_MIXER_CHANNEL_BACK_LEFT] = "rear-left", + [MATE_MIXER_CHANNEL_BACK_RIGHT] = "rear-right", + [MATE_MIXER_CHANNEL_BACK_CENTER] = "rear-center", + [MATE_MIXER_CHANNEL_FRONT_LEFT_CENTER] = "front-left-of-center", + [MATE_MIXER_CHANNEL_FRONT_RIGHT_CENTER] = "front-right-of-center", + [MATE_MIXER_CHANNEL_SIDE_LEFT] = "side-left", + [MATE_MIXER_CHANNEL_SIDE_RIGHT] = "side-right", + [MATE_MIXER_CHANNEL_TOP_FRONT_LEFT] = "top-front-left", + [MATE_MIXER_CHANNEL_TOP_FRONT_RIGHT] = "top-front-right", + [MATE_MIXER_CHANNEL_TOP_FRONT_CENTER] = "top-front-center", + [MATE_MIXER_CHANNEL_TOP_CENTER] = "top-center", + [MATE_MIXER_CHANNEL_TOP_BACK_LEFT] = "top-rear-left", + [MATE_MIXER_CHANNEL_TOP_BACK_RIGHT] = "top-rear-right", + [MATE_MIXER_CHANNEL_TOP_BACK_CENTER] = "top-rear-center" +}; + +static const gchar *pretty_position[MATE_MIXER_CHANNEL_MAX] = { + [MATE_MIXER_CHANNEL_UNKNOWN] = N_("Unknown"), + /* Speaker channel names */ + [MATE_MIXER_CHANNEL_MONO] = N_("Mono"), + [MATE_MIXER_CHANNEL_FRONT_LEFT] = N_("Front Left"), + [MATE_MIXER_CHANNEL_FRONT_RIGHT] = N_("Front Right"), + [MATE_MIXER_CHANNEL_FRONT_CENTER] = N_("Front Center"), + [MATE_MIXER_CHANNEL_LFE] = N_("LFE"), + [MATE_MIXER_CHANNEL_BACK_LEFT] = N_("Rear Left"), + [MATE_MIXER_CHANNEL_BACK_RIGHT] = N_("Rear Right"), + [MATE_MIXER_CHANNEL_BACK_CENTER] = N_("Rear Center"), + [MATE_MIXER_CHANNEL_FRONT_LEFT_CENTER] = N_("Front Left of Center"), + [MATE_MIXER_CHANNEL_FRONT_RIGHT_CENTER] = N_("Front Right of Center"), + [MATE_MIXER_CHANNEL_SIDE_LEFT] = N_("Side Left"), + [MATE_MIXER_CHANNEL_SIDE_RIGHT] = N_("Side Right"), + [MATE_MIXER_CHANNEL_TOP_FRONT_LEFT] = N_("Top Front Left"), + [MATE_MIXER_CHANNEL_TOP_FRONT_RIGHT] = N_("Top Front Right"), + [MATE_MIXER_CHANNEL_TOP_FRONT_CENTER] = N_("Top Front Center"), + [MATE_MIXER_CHANNEL_TOP_CENTER] = N_("Top Center"), + [MATE_MIXER_CHANNEL_TOP_BACK_LEFT] = N_("Top Rear Left"), + [MATE_MIXER_CHANNEL_TOP_BACK_RIGHT] = N_("Top Rear Right"), + [MATE_MIXER_CHANNEL_TOP_BACK_CENTER] = N_("Top Rear Center") +}; + +const gchar * +gvc_channel_position_to_pulse_string (MateMixerChannelPosition position) +{ + g_return_val_if_fail (position >= 0 && position < MATE_MIXER_CHANNEL_MAX, NULL); + + return pulse_position[position]; +} + +const gchar * +gvc_channel_position_to_pretty_string (MateMixerChannelPosition position) +{ + g_return_val_if_fail (position >= 0 && position < MATE_MIXER_CHANNEL_MAX, NULL); + + return pretty_position[position]; +} + +const gchar * +gvc_channel_map_to_pretty_string (MateMixerStreamControl *control) +{ + g_return_val_if_fail (MATE_MIXER_IS_STREAM_CONTROL (control), NULL); + +#define HAS_POSITION(p) (mate_mixer_stream_control_has_channel_position (control, (p))) + + /* Modeled after PulseAudio 5.0, probably could be extended with other combinations */ + switch (mate_mixer_stream_control_get_num_channels (control)) { + case 1: + if (HAS_POSITION (MATE_MIXER_CHANNEL_MONO)) + return _("Mono"); + break; + case 2: + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_RIGHT)) + return _("Stereo"); + break; + case 4: + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_RIGHT)) + return _("Surround 4.0"); + break; + case 5: + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_RIGHT)) + if (HAS_POSITION (MATE_MIXER_CHANNEL_LFE)) + return _("Surround 4.1"); + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_CENTER)) + return _("Surround 5.0"); + break; + case 6: + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_CENTER) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_LFE)) + return _("Surround 5.1"); + break; + case 8: + if (HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_FRONT_CENTER) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_BACK_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_SIDE_LEFT) && + HAS_POSITION (MATE_MIXER_CHANNEL_SIDE_RIGHT) && + HAS_POSITION (MATE_MIXER_CHANNEL_LFE)) + return _("Surround 7.1"); + break; + } + +#undef HAS_POSITION + + return NULL; +} + +#if GTK_CHECK_VERSION (3, 0, 0) +/* Taken from gtkstyle.c */ +static void rgb_to_hls (gdouble *r, gdouble *g, gdouble *b); +static void hls_to_rgb (gdouble *h, gdouble *l, gdouble *s); + +void +gvc_color_shade (GdkRGBA *a, GdkRGBA *b, gdouble k) +{ + gdouble red; + gdouble green; + gdouble blue; + + red = (gdouble) a->red / 65535.0; + green = (gdouble) a->green / 65535.0; + blue = (gdouble) a->blue / 65535.0; + + rgb_to_hls (&red, &green, &blue); + + green *= k; + if (green > 1.0) + green = 1.0; + else if (green < 0.0) + green = 0.0; + + blue *= k; + if (blue > 1.0) + blue = 1.0; + else if (blue < 0.0) + blue = 0.0; + + hls_to_rgb (&red, &green, &blue); + + b->red = red * 65535.0; + b->green = green * 65535.0; + b->blue = blue * 65535.0; +} + +static void +rgb_to_hls (gdouble *r, gdouble *g, gdouble *b) +{ + gdouble min; + gdouble max; + gdouble red; + gdouble green; + gdouble blue; + gdouble h, l, s; + gdouble delta; + + red = *r; + green = *g; + blue = *b; + + if (red > green) { + if (red > blue) + max = red; + else + max = blue; + + if (green < blue) + min = green; + else + min = blue; + } else { + if (green > blue) + max = green; + else + max = blue; + + if (red < blue) + min = red; + else + min = blue; + } + + l = (max + min) / 2; + s = 0; + h = 0; + + if (max != min) { + if (l <= 0.5) + s = (max - min) / (max + min); + else + s = (max - min) / (2 - max - min); + + delta = max - min; + if (red == max) + h = (green - blue) / delta; + else if (green == max) + h = 2 + (blue - red) / delta; + else if (blue == max) + h = 4 + (red - green) / delta; + + h *= 60; + if (h < 0.0) + h += 360; + } + + *r = h; + *g = l; + *b = s; +} + +static void +hls_to_rgb (gdouble *h, gdouble *l, gdouble *s) +{ + gdouble hue; + gdouble lightness; + gdouble saturation; + gdouble m1, m2; + gdouble r, g, b; + + lightness = *l; + saturation = *s; + + if (lightness <= 0.5) + m2 = lightness * (1 + saturation); + else + m2 = lightness + saturation - lightness * saturation; + m1 = 2 * lightness - m2; + + if (saturation == 0) { + *h = lightness; + *l = lightness; + *s = lightness; + } else { + hue = *h + 120; + while (hue > 360) + hue -= 360; + while (hue < 0) + hue += 360; + + if (hue < 60) + r = m1 + (m2 - m1) * hue / 60; + else if (hue < 180) + r = m2; + else if (hue < 240) + r = m1 + (m2 - m1) * (240 - hue) / 60; + else + r = m1; + + hue = *h; + while (hue > 360) + hue -= 360; + while (hue < 0) + hue += 360; + + if (hue < 60) + g = m1 + (m2 - m1) * hue / 60; + else if (hue < 180) + g = m2; + else if (hue < 240) + g = m1 + (m2 - m1) * (240 - hue) / 60; + else + g = m1; + + hue = *h - 120; + while (hue > 360) + hue -= 360; + while (hue < 0) + hue += 360; + + if (hue < 60) + b = m1 + (m2 - m1) * hue / 60; + else if (hue < 180) + b = m2; + else if (hue < 240) + b = m1 + (m2 - m1) * (240 - hue) / 60; + else + b = m1; + + *h = r; + *l = g; + *s = b; + } +} +#endif |