From 41ab49da7dece2a57bef290734e67ba10eeee942 Mon Sep 17 00:00:00 2001
From: Oliver Schinagl <oliver@schinagl.nl>
Date: Thu, 20 Jan 2005 07:50:49 +0000
Subject: mouse coordinate stores are now 11 bits wide.

Added inline functions for volume and gain control.
---
 Graphic_Equalizer/src/events.hcc | 105 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 104 insertions(+), 1 deletion(-)

diff --git a/Graphic_Equalizer/src/events.hcc b/Graphic_Equalizer/src/events.hcc
index 2e8c272..275bc25 100644
--- a/Graphic_Equalizer/src/events.hcc
+++ b/Graphic_Equalizer/src/events.hcc
@@ -26,6 +26,7 @@
 
 /******** Application Includes ********/
 #include "configuration.hch"
+#include "display_shared.hch"
 #include "eventhandler_shared.hch"
 #include "events.hch"
 
@@ -40,6 +41,108 @@ ram unsigned 8 presets_default_values[768] = {
 
 
 
+/*! \fn		void set_preset(unsigned 10 *active_preset,
+ *			unsigned 10 *preset_offset, unsigned 8 new_preset,
+ *			unsigned 4 *equalizer_levels_ptr,
+ *			unsigned 4 *equalizer_levels)
+ * \brief	This function changes the active preset to the new_preset
+ *		received from the userinterface and updates internal pointers.
+ *
+ * \param	*active_preset		Local store that holds the current
+ *					active preset.
+ * \param	*preset_offset		Local store that holds the index to the
+ *					current active preset in the presets
+ *					array.
+ * \param	new_preset		The new preset.
+ * \param	*equalizer_levels_ptr	Pointer pointing to the current
+ *					equalizer settings.
+ * \param	*equalizer_levels	Local store with all presets.
+ */
+inline void set_preset(unsigned 10 *active_preset, unsigned 10 *preset_offset, unsigned 8 new_preset, unsigned 4 *equalizer_levels_ptr, unsigned 4 *equalizer_levels) {
+	/*
+	 * The active preset is determined by the mask minus an offset. Hence
+	 * ranging our active preset from 0 to 6.
+	 */
+	*active_preset = 0 @ new_preset;
+	/*
+	 * 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 = *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.
+	 */
+	equalizer_levels_ptr = &equalizer_levels[*preset_offset];
+}
+
+
+
+/*
+ */
+inline unsigned 5 change_volume_from_coordinate(unsigned 11 coordinate, events_t *events, skindata_t *skindata) {
+	unsigned 5 retval;
+	unsigned 5 volumeleft;
+
+	/*
+	 * Copy the current Y cursor position to the events struct. This we
+	 * need for drawing purposes.
+	 */
+	events->volume_position = coordinate;
+	/*
+	 * 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.
+	 */
+	volumeleft = volumecontrol_table[(coordinate -skindata->volume.top) <- 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(!volumeleft, (0x1f -volumeleft), (0x1f -volumeleft));
+	/*
+	 * Now that we have set the gain, we return it incase someone needs it.
+	 */
+	retval = volumeleft;
+
+	return retval;
+}
+
+
+
+/*
+ */
+inline unsigned 4 change_inputgain_from_coordinate(unsigned 11 coordinate, events_t *events, skindata_t *skindata) {
+	unsigned 4 retval;
+	unsigned 4 gainleft;
+
+	/*
+	 * Copy the current Y cursor position to the events struct. This we
+	 * then later use for drawing purposes.
+	 */
+	events->inputgain_position = coordinate;
+	/*
+	 * Look the relative y-coordinate up in the inputgain lookup table. We
+	 * make a local copy here because the RC200 call doesn't behave nicely
+	 * when passing anything else.
+	 */
+	gainleft = inputgain_table[(coordinate -skindata->inputgain.top) <- 6];
+	/*
+	 * Finally we set the gain as calculated.
+	 */
+	RC200AudioInSetGain(!gainleft, gainleft, gainleft);
+	/*
+	 * Now that we have set the gain, we return it incase someone needs it.
+	 */
+	retval = gainleft;
+
+	return retval;
+}
+
+
+
 /*! \fn		void load_preset(unsigned 10 preset, unsigned 4 *equalizer_levels_ptr);
  * \brief	This function loads 768 4bits presets into the equalizer_levels
  *		array pointed to by equalizer_levels.
@@ -73,4 +176,4 @@ void load_preset(unsigned 10 preset, unsigned 4 *equalizer_levels_ptr) {
  * should be dynamically loaded.
  */
 ram unsigned 4 equalizer_table[640] = {15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0};
-ram unsigned 10 equalizer_table_inv[16] = {446, 444, 440, 436, 432, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 384};
+ram unsigned 11 equalizer_table_inv[16] = {446, 444, 440, 436, 432, 428, 424, 420, 416, 412, 408, 404, 400, 396, 392, 384};
-- 
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