3c1e9ca558
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18441 a1c6a512-1295-4272-9138-f99709370657
289 lines
8.5 KiB
C
289 lines
8.5 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Björn Stenberg
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*
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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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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include <string.h>
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#include <stdio.h>
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#include "config.h"
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#include "sprintf.h"
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#include "settings.h"
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#include "action.h"
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#include "system.h"
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#include "font.h"
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#include "misc.h"
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#include "dsp.h"
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#include "sound.h"
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#include "pcmbuf.h"
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#include "lang.h"
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#include "icons.h"
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#include "screen_access.h"
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#include "screens.h"
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#define PITCH_MAX 2000
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#define PITCH_MIN 500
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#define PITCH_SMALL_DELTA 1
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#define PITCH_BIG_DELTA 10
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#define PITCH_NUDGE_DELTA 20
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#define PITCH_MODE_ABSOLUTE 1
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#define PITCH_MODE_SEMITONE -PITCH_MODE_ABSOLUTE
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static int pitch_mode = PITCH_MODE_ABSOLUTE; /* 1 - absolute, -1 - semitone */
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/* returns:
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0 if no key was pressed
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1 if USB was connected */
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static void pitch_screen_draw(struct screen *display, int pitch, int pitch_mode)
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{
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unsigned char* ptr;
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unsigned char buf[32];
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int w, h;
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display->clear_display();
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if (display->getnblines() < 4) /* very small screen, just show pitch value*/
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{
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w = snprintf((char *)buf, sizeof(buf), "%s: %d.%d%%",str(LANG_PITCH),
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pitch / 10, pitch % 10 );
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display->putsxy((display->lcdwidth-(w*display->getcharwidth()))/2,
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display->getnblines()/2,buf);
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}
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else /* bigger screen, show everything... */
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{
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/* UP: Pitch Up */
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if (pitch_mode == PITCH_MODE_ABSOLUTE) {
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ptr = str(LANG_PITCH_UP);
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} else {
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ptr = str(LANG_PITCH_UP_SEMITONE);
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}
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display->getstringsize(ptr,&w,&h);
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display->putsxy((display->lcdwidth-w)/2, 0, ptr);
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display->mono_bitmap(bitmap_icons_7x8[Icon_UpArrow],
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display->lcdwidth/2 - 3, h, 7, 8);
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/* DOWN: Pitch Down */
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if (pitch_mode == PITCH_MODE_ABSOLUTE) {
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ptr = str(LANG_PITCH_DOWN);
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} else {
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ptr = str(LANG_PITCH_DOWN_SEMITONE);
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}
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display->getstringsize(ptr,&w,&h);
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display->putsxy((display->lcdwidth-w)/2, display->lcdheight - h, ptr);
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display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow],
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display->lcdwidth/2 - 3,
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display->lcdheight - h*2, 7, 8);
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/* RIGHT: +2% */
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ptr = "+2%";
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display->getstringsize(ptr,&w,&h);
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display->putsxy(display->lcdwidth-w, (display->lcdheight-h)/2, ptr);
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display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
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display->lcdwidth-w-8,
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(display->lcdheight-h)/2, 7, 8);
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/* LEFT: -2% */
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ptr = "-2%";
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display->getstringsize(ptr,&w,&h);
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display->putsxy(0, (display->lcdheight-h)/2, ptr);
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display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward],
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w+1, (display->lcdheight-h)/2, 7, 8);
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/* "Pitch" */
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snprintf((char *)buf, sizeof(buf), "%s", str(LANG_PITCH));
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display->getstringsize(buf,&w,&h);
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display->putsxy((display->lcdwidth-w)/2, (display->lcdheight/2)-h, buf);
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/* "XX.X%" */
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snprintf((char *)buf, sizeof(buf), "%d.%d%%",
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pitch / 10, pitch % 10 );
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display->getstringsize(buf,&w,&h);
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display->putsxy((display->lcdwidth-w)/2, display->lcdheight/2, buf);
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}
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display->update();
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}
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static int pitch_increase(int pitch, int delta, bool allow_cutoff)
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{
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int new_pitch;
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if (delta < 0) {
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if (pitch + delta >= PITCH_MIN) {
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new_pitch = pitch + delta;
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} else {
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if (!allow_cutoff) {
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return pitch;
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}
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new_pitch = PITCH_MIN;
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}
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} else if (delta > 0) {
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if (pitch + delta <= PITCH_MAX) {
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new_pitch = pitch + delta;
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} else {
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if (!allow_cutoff) {
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return pitch;
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}
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new_pitch = PITCH_MAX;
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}
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} else {
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/* delta == 0 -> no real change */
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return pitch;
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}
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sound_set_pitch(new_pitch);
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return new_pitch;
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}
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/* Factor for changing the pitch one half tone up.
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The exact value is 2^(1/12) = 1.05946309436
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But we use only integer arithmetics, so take
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rounded factor multiplied by 10^5=100,000. This is
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enough to get the same promille values as if we
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had used floating point (checked with a spread
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sheet).
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*/
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#define PITCH_SEMITONE_FACTOR 105946L
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/* Some helpful constants. K is the scaling factor for SEMITONE.
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N is for more accurate rounding
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KN is K * N
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*/
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#define PITCH_K_FCT 100000UL
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#define PITCH_N_FCT 10
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#define PITCH_KN_FCT 1000000UL
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static int pitch_increase_semitone(int pitch, bool up)
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{
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uint32_t tmp;
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uint32_t round_fct; /* How much to scale down at the end */
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tmp = pitch;
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if (up) {
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tmp = tmp * PITCH_SEMITONE_FACTOR;
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round_fct = PITCH_K_FCT;
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} else {
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tmp = (tmp * PITCH_KN_FCT) / PITCH_SEMITONE_FACTOR;
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round_fct = PITCH_N_FCT;
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}
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/* Scaling down with rounding */
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tmp = (tmp + round_fct / 2) / round_fct;
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return pitch_increase(pitch, tmp - pitch, false);
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}
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bool pitch_screen(void)
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{
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int button;
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int pitch = sound_get_pitch();
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int new_pitch, delta = 0;
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bool nudged = false;
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bool exit = false;
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int i;
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#if CONFIG_CODEC == SWCODEC
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pcmbuf_set_low_latency(true);
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#endif
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while (!exit)
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{
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FOR_NB_SCREENS(i)
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pitch_screen_draw(&screens[i], pitch, pitch_mode);
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button = get_action(CONTEXT_PITCHSCREEN,TIMEOUT_BLOCK);
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switch (button) {
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case ACTION_PS_INC_SMALL:
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delta = PITCH_SMALL_DELTA;
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break;
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case ACTION_PS_INC_BIG:
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delta = PITCH_BIG_DELTA;
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break;
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case ACTION_PS_DEC_SMALL:
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delta = -PITCH_SMALL_DELTA;
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break;
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case ACTION_PS_DEC_BIG:
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delta = -PITCH_BIG_DELTA;
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break;
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case ACTION_PS_NUDGE_RIGHT:
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new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false);
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nudged = (new_pitch != pitch);
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pitch = new_pitch;
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break;
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case ACTION_PS_NUDGE_RIGHTOFF:
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if (nudged) {
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pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false);
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}
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nudged = false;
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break;
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case ACTION_PS_NUDGE_LEFT:
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new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false);
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nudged = (new_pitch != pitch);
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pitch = new_pitch;
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break;
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case ACTION_PS_NUDGE_LEFTOFF:
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if (nudged) {
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pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false);
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}
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nudged = false;
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break;
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case ACTION_PS_RESET:
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pitch = 1000;
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sound_set_pitch( pitch );
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break;
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case ACTION_PS_TOGGLE_MODE:
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pitch_mode = -pitch_mode;
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break;
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case ACTION_PS_EXIT:
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exit = true;
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break;
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default:
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if(default_event_handler(button) == SYS_USB_CONNECTED)
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return 1;
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break;
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}
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if(delta)
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{
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if (pitch_mode == PITCH_MODE_ABSOLUTE) {
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pitch = pitch_increase(pitch, delta, true);
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} else {
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pitch = pitch_increase_semitone(pitch, delta > 0 ? true:false);
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}
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delta = 0;
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}
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}
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#if CONFIG_CODEC == SWCODEC
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pcmbuf_set_low_latency(false);
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#endif
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lcd_setfont(FONT_UI);
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return 0;
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}
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