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authorOliver Schinagl <oliver@schinagl.nl>2004-12-09 14:03:54 (GMT)
committerOliver Schinagl <oliver@schinagl.nl>2004-12-09 14:03:54 (GMT)
commit460b179c5c7700c8c19e2f4906ed4c99681b6227 (patch)
tree7eab5caaf9175fa2a8f60fa455ba3e2ff82aa26b /Graphic_Equalizer/src/eventhandler.hcc
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+/*! \file eventhandler.hcc
+ *
+ * \section generic This modules coordinates all events. Thus for example
+ * when the mousehandler registers a 'click' we coordinate
+ * the actions that follow that click.
+ *
+ * \section project Project information.
+ * Project Graphic Equalizer\n
+ * \author O.M. Schinagl
+ * \date 20041110
+ * \version 0.1
+ *
+ * \section copyright Copyright
+ * Copyright ©2004 Koninklijke Philips Electronics N.V. All rights reserved
+ *
+ * \section history Change history
+ * 20041110: O.M. Schinagl\n Initial version
+ *
+ ********************************************************************/
+
+/******** System Includes *************/
+#include <stdlib.hch>
+
+#include "pal_master.hch"
+
+/******** Application Includes ********/
+#include "configuration.hch"
+#include "audio.hch"
+#include "mouse_shared.hch"
+#include "eventhandler_shared.hch"
+#include "eventhandler.hch"
+#include "events.hch"
+#include "display_shared.hch"
+#include "display.hch"
+
+#if HAVE_DEBUG
+ #include "debug.hch"
+#endif
+
+
+
+/*
+ */
+extern chan unsigned 1 maskupdate_notification;
+
+
+
+/*! \fn void eventhandler_main(audiodata_t *audiodata, events_t *events, mousedata_t *mousedata);
+ * \brief
+ *
+ * \param *audiodata pointer to struct for setting equalizer levels.
+ * \param *events pointer to struct with all events for display states.
+ * \param *mousedata pointer to struct with mouse data for X and Y
+ * coordinates.
+ *
+ * \return Never Returns.
+ * \retval void
+ */
+void eventhandler_main(audiodata_t *audiodata, events_t *events, mousedata_t *mousedata) {
+ mpram {
+ ram unsigned 4 write[768];
+ rom unsigned 4 read[768];
+ } equalizer_levels with { block = "BlockRAM"};
+
+ unsigned 10 preset_offset;
+ unsigned 10 reference_point, reference_point_right;
+ unsigned 5 volume_left;
+ unsigned 4 index_offset, index_end;
+ unsigned 4 equalizer_mode_local;
+ unsigned 1 newmaskupdate;
+
+ load_preset(LOAD_PRESET_RESET, equalizer_levels.write);
+ reload_equalizer(events, &equalizer_levels.write[preset_offset]);
+
+ while (TRUE) {
+ maskupdate_notification ? newmaskupdate;
+
+ /*
+ * First we determine what mousestate we currently have. Then
+ * we check where we are to decide what to do.
+ */
+ switch (mousedata->state) {
+ case MOUSE_STATE_ON_PRESS:
+ /*
+ * If we are displaying the graphic visual,
+ * any press returns to the application.
+ */
+ if (MODE_GRAPH == events->mode) {
+ events->mode = MODE_SKIN;
+ events->mask = 0;
+ } else {
+ delay;
+ }
+
+ /*
+ */
+ if (BUTTON_MODE == events->mask) {
+ if (MODE_GRAPH == events->mode) {
+ events->mode = MODE_SKIN;
+ } else {
+ events->mode = MODE_GRAPH;
+ }
+ } else {
+ delay;
+ }
+
+ /*
+ * If the current mask equals the help button
+ * we set display mode to help.
+ */
+ if (BUTTON_HELP == events->mask) {
+ /*
+ * Change the mode to help if it's
+ * currently not set, otherwise go back
+ * to skin mode.
+ */
+ if (MODE_HELP == events->mode) {
+ events->mode = MODE_SKIN;
+ } else {
+ events->mode = MODE_HELP;
+ }
+ } else {
+ delay;
+ }
+
+ /*
+ * The Preset buttons span from 1 to 6 so if
+ * the mask one of those, we'll change the
+ * pointer to point to the current preset.
+ */
+ if ((BUTTON_PRESET_1 <= events->mask) && (events->mask <= BUTTON_PRESET_6)) {
+ /*
+ * The active preset is determined by
+ * the mask minus an offset. Hence
+ * ranging our active preset from 0 to
+ * 6.
+ */
+ events->active_preset = 0 @ (events->mask -BUTTON_PRESET_1);
+ /*
+ * Each equalizer is 128 bands wide,
+ * thus we need to add 128 * the preset
+ * for each different preset. This
+ * offset is calculated here.
+ */
+ preset_offset = events->active_preset << 7;
+ /*
+ * We set the pointer to the active
+ * part of the array by using the
+ * preset offset as our index. Hence
+ * depending on the selected preset
+ * we point to 0, 128, 256, 384, 512
+ * or 640.
+ */
+ audiodata->equalizer_levels_ptr = &equalizer_levels.read[preset_offset];
+ /*
+ * Finally update the equalizer bars
+ * that are drawn by the display.
+ */
+ reload_equalizer(events, &equalizer_levels.write[preset_offset]);
+ } else {
+ delay;
+ }
+
+ if ((BUTTON_PRECISE <= events->mask) && (events->mask <= BUTTON_CONVEX_FULL)) {
+ events->equalizer_mode = (events->mask -BUTTON_PRECISE) <-4;
+ } else {
+ delay;
+ }
+
+ /*
+ * If the demo button was pressed load the
+ * demo preset values into the presets.
+ */
+ if (BUTTON_DEMO == events->mask) {
+ load_preset(LOAD_PRESET_DEMO, equalizer_levels.write);
+ reload_equalizer(events, &equalizer_levels.write[preset_offset]);
+ }
+
+ /*
+ * If the reset button was pressed load the
+ * reset values into the presets.
+ */
+ if (BUTTON_RESET == events->mask) {
+ load_preset(LOAD_PRESET_RESET, equalizer_levels.write);
+ reload_equalizer(events, &equalizer_levels.write[preset_offset]);
+ }
+
+ /*
+ * If the current mask equals the log button,
+ * we flip the display_log bit.
+ */
+ if (BUTTON_LOG == events->mask) {
+ audiodata->display_log = !audiodata->display_log;
+ } else {
+ delay;
+ }
+
+ break;
+
+ case MOUSE_STATE_DOWN:
+ /*
+ * If we are in the volume area we update the
+ * volume level for both channels.
+ */
+ if (AREA_VOLUME_YAXIS == events->mask) {
+ /*
+ * Copy the current Y cursor position
+ * to the events struct. This we then
+ * later use for drawing purposes.
+ */
+ events->volume_position = 0 @ mousedata->y;
+ /*
+ * Look the relative y-coordinate up in
+ * the volumecontrol lookup table. We
+ * make a local copy here because the
+ * RC200 call doesn't behave nicely
+ * when passing anything else.
+ */
+ volume_left = volumecontrol_table[((mousedata->y) -65) <- 6];
+ /*
+ * We feel that volume gets softer the
+ * closer it gets to the 0, and louder
+ * as it approaches 0x1f. The SetVolume
+ * RC200 call does this in an unnatural
+ * reverse way. Therefor we fix it.
+ */
+ RC200AudioOutSetVolume(!volume_left, 0x1f -volume_left, 0x1f -volume_left);
+ } else {
+ delay;
+ }
+
+ if ((AREA_EQUALIZER_MIN <= events->mask) && (events->mask <= AREA_EQUALIZER_MAX)) {
+
+ if (EQUALIZERMODE_PRECISE == events->equalizer_mode) {
+ events->locked_display = TRUE;
+ equalizer_levels.write[preset_offset +(0 @ events->mask) -AREA_EQUALIZER_MIN] = equalizer_table[mousedata->y -382];
+ events->equalizer_display[(events->mask -AREA_EQUALIZER_MIN) <- 7] = mousedata->y;
+ events->locked_display = FALSE;
+ } else {
+
+ equalizer_mode_local = events->equalizer_mode +1;
+
+ events->locked_display = TRUE;
+ index_offset = ((equalizer_mode_local << 1)); /* delay; */
+
+ if (events->mask < (AREA_EQUALIZER_MIN +(0 @ equalizer_mode_local))) {
+ reference_point = events->equalizer_display[AREA_EQUALIZER_MIN -AREA_EQUALIZER_MIN];
+ index_offset -= (((0 @ equalizer_mode_local) -(events->mask -AREA_EQUALIZER_MIN)) <- 4);
+ } else {
+ reference_point = events->equalizer_display[(events->mask - (0 @ equalizer_mode_local) -AREA_EQUALIZER_MIN) <- 7];
+ index_offset -= 1;
+ }
+
+ if (events->mask > (AREA_EQUALIZER_MAX -(0 @ equalizer_mode_local))) {
+ reference_point_right = events->equalizer_display[AREA_EQUALIZER_MAX -AREA_EQUALIZER_MIN];
+ index_end = (((0 @ equalizer_mode_local) -(AREA_EQUALIZER_MAX -events->mask)) <- 4) -1;
+ } else {
+ reference_point_right = events->equalizer_display[(events->mask + (0 @ equalizer_mode_local) -AREA_EQUALIZER_MIN) <- 7];
+ index_end = 0;
+ }
+ events->locked_display = FALSE;
+
+ for (; index_offset != index_end; index_offset--) {
+ unsigned 10 average_bar;
+ unsigned 7 equalizer_index;
+ unsigned 4 bar_index;
+
+ if (index_offset == equalizer_mode_local) {
+ reference_point = reference_point_right;
+ } else {
+ delay;
+ }
+
+ if (index_offset > equalizer_mode_local)
+ {
+ bar_index = (index_offset -equalizer_mode_local);
+ equalizer_index = ((events->mask -(0 @ bar_index) -AREA_EQUALIZER_MIN) <- 7);
+ } else
+ {
+ bar_index = (equalizer_mode_local -index_offset);
+ equalizer_index = ((events->mask +(0 @ bar_index) -AREA_EQUALIZER_MIN) <- 7);
+ }
+
+ if (reference_point > mousedata->y) {
+ average_bar = mousedata->y +((reference_point -mousedata->y) >> (equalizer_mode_local -bar_index));
+ } else {
+ average_bar = mousedata->y -((mousedata->y -reference_point) >> (equalizer_mode_local -bar_index));
+ }
+
+ events->locked_display = TRUE;
+ equalizer_levels.write[preset_offset +(0 @ equalizer_index)] = equalizer_table[average_bar -382];
+ events->equalizer_display[equalizer_index] = average_bar;
+ events->locked_display = FALSE;
+ }
+ }
+ } else {
+ delay;
+ }
+
+ break;
+
+ default:
+ break;
+ }
+ }
+} /* --- eventhandler_main() --- */
+
+
+
+/*
+ * Volume Control lookuptable.
+ * TODO: This table is now hardcoded. To ensure full skinability this table
+ * should be dynamically loaded.
+ */
+rom unsigned 5 volumecontrol_table[46] = {31, 31, 30, 30, 29, 29, 28, 28, 27, 27, 26, 26, 25, 25, 24, 24, 23, 23, 22, 22, 21, 21, 20, 20, 19, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0};