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authorJonathan Gordon <rockbox@jdgordon.info>2008-05-05 07:07:19 +0000
committerJonathan Gordon <rockbox@jdgordon.info>2008-05-05 07:07:19 +0000
commit8e57ede59f5c84e4f97ef6e1e9d3e1a3965dca1c (patch)
tree9fc16798887fe603064c222a2e83c610447a2909 /apps/gui/pitchscreen.c
parent5641995027be6651a8b6eb6b557e7e6531fcc014 (diff)
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move the pitchscreen out of screens.c.. no functional changes
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17365 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'apps/gui/pitchscreen.c')
-rw-r--r--apps/gui/pitchscreen.c284
1 files changed, 284 insertions, 0 deletions
diff --git a/apps/gui/pitchscreen.c b/apps/gui/pitchscreen.c
new file mode 100644
index 0000000000..b790835fcb
--- /dev/null
+++ b/apps/gui/pitchscreen.c
@@ -0,0 +1,284 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Björn Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdbool.h>
+#include <string.h>
+#include <stdio.h>
+#include "config.h"
+#include "sprintf.h"
+#include "settings.h"
+#include "action.h"
+#include "system.h"
+#include "font.h"
+#include "misc.h"
+#include "dsp.h"
+#include "sound.h"
+#include "pcmbuf.h"
+#include "lang.h"
+#include "icons.h"
+#include "screen_access.h"
+
+#define PITCH_MAX 2000
+#define PITCH_MIN 500
+#define PITCH_SMALL_DELTA 1
+#define PITCH_BIG_DELTA 10
+#define PITCH_NUDGE_DELTA 20
+
+#define PITCH_MODE_ABSOLUTE 1
+#define PITCH_MODE_SEMITONE -PITCH_MODE_ABSOLUTE
+
+static int pitch_mode = PITCH_MODE_ABSOLUTE; /* 1 - absolute, -1 - semitone */
+
+/* returns:
+ 0 if no key was pressed
+ 1 if USB was connected */
+
+static void pitch_screen_draw(struct screen *display, int pitch, int pitch_mode)
+{
+ unsigned char* ptr;
+ unsigned char buf[32];
+ int w, h;
+
+ display->clear_display();
+
+ if (display->nb_lines < 4) /* very small screen, just show the pitch value */
+ {
+ w = snprintf((char *)buf, sizeof(buf), "%s: %d.%d%%",str(LANG_PITCH),
+ pitch / 10, pitch % 10 );
+ display->putsxy((display->width-(w*display->char_width))/2,
+ display->nb_lines/2,buf);
+ }
+ else /* bigger screen, show everything... */
+ {
+
+ /* UP: Pitch Up */
+ if (pitch_mode == PITCH_MODE_ABSOLUTE) {
+ ptr = str(LANG_PITCH_UP);
+ } else {
+ ptr = str(LANG_PITCH_UP_SEMITONE);
+ }
+ display->getstringsize(ptr,&w,&h);
+ display->putsxy((display->width-w)/2, 0, ptr);
+ display->mono_bitmap(bitmap_icons_7x8[Icon_UpArrow],
+ display->width/2 - 3, h, 7, 8);
+
+ /* DOWN: Pitch Down */
+ if (pitch_mode == PITCH_MODE_ABSOLUTE) {
+ ptr = str(LANG_PITCH_DOWN);
+ } else {
+ ptr = str(LANG_PITCH_DOWN_SEMITONE);
+ }
+ display->getstringsize(ptr,&w,&h);
+ display->putsxy((display->width-w)/2, display->height - h, ptr);
+ display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow],
+ display->width/2 - 3, display->height - h*2, 7, 8);
+
+ /* RIGHT: +2% */
+ ptr = "+2%";
+ display->getstringsize(ptr,&w,&h);
+ display->putsxy(display->width-w, (display->height-h)/2, ptr);
+ display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
+ display->width-w-8, (display->height-h)/2, 7, 8);
+
+ /* LEFT: -2% */
+ ptr = "-2%";
+ display->getstringsize(ptr,&w,&h);
+ display->putsxy(0, (display->height-h)/2, ptr);
+ display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward],
+ w+1, (display->height-h)/2, 7, 8);
+
+ /* "Pitch" */
+ snprintf((char *)buf, sizeof(buf), str(LANG_PITCH));
+ display->getstringsize(buf,&w,&h);
+ display->putsxy((display->width-w)/2, (display->height/2)-h, buf);
+ /* "XX.X%" */
+ snprintf((char *)buf, sizeof(buf), "%d.%d%%",
+ pitch / 10, pitch % 10 );
+ display->getstringsize(buf,&w,&h);
+ display->putsxy((display->width-w)/2, display->height/2, buf);
+ }
+
+ display->update();
+}
+
+static int pitch_increase(int pitch, int delta, bool allow_cutoff)
+{
+ int new_pitch;
+
+ if (delta < 0) {
+ if (pitch + delta >= PITCH_MIN) {
+ new_pitch = pitch + delta;
+ } else {
+ if (!allow_cutoff) {
+ return pitch;
+ }
+ new_pitch = PITCH_MIN;
+ }
+ } else if (delta > 0) {
+ if (pitch + delta <= PITCH_MAX) {
+ new_pitch = pitch + delta;
+ } else {
+ if (!allow_cutoff) {
+ return pitch;
+ }
+ new_pitch = PITCH_MAX;
+ }
+ } else {
+ /* delta == 0 -> no real change */
+ return pitch;
+ }
+ sound_set_pitch(new_pitch);
+
+ return new_pitch;
+}
+
+/* Factor for changing the pitch one half tone up.
+ The exact value is 2^(1/12) = 1.05946309436
+ But we use only integer arithmetics, so take
+ rounded factor multiplied by 10^5=100,000. This is
+ enough to get the same promille values as if we
+ had used floating point (checked with a spread
+ sheet).
+ */
+#define PITCH_SEMITONE_FACTOR 105946L
+
+/* Some helpful constants. K is the scaling factor for SEMITONE.
+ N is for more accurate rounding
+ KN is K * N
+ */
+#define PITCH_K_FCT 100000UL
+#define PITCH_N_FCT 10
+#define PITCH_KN_FCT 1000000UL
+
+static int pitch_increase_semitone(int pitch, bool up)
+{
+ uint32_t tmp;
+ uint32_t round_fct; /* How much to scale down at the end */
+ tmp = pitch;
+ if (up) {
+ tmp = tmp * PITCH_SEMITONE_FACTOR;
+ round_fct = PITCH_K_FCT;
+ } else {
+ tmp = (tmp * PITCH_KN_FCT) / PITCH_SEMITONE_FACTOR;
+ round_fct = PITCH_N_FCT;
+ }
+ /* Scaling down with rounding */
+ tmp = (tmp + round_fct / 2) / round_fct;
+ return pitch_increase(pitch, tmp - pitch, false);
+}
+
+bool pitch_screen(void)
+{
+ int button;
+ int pitch = sound_get_pitch();
+ int new_pitch, delta = 0;
+ bool nudged = false;
+ bool exit = false;
+ int i;
+
+#if CONFIG_CODEC == SWCODEC
+ pcmbuf_set_low_latency(true);
+#endif
+
+ while (!exit)
+ {
+ FOR_NB_SCREENS(i)
+ pitch_screen_draw(&screens[i], pitch, pitch_mode);
+
+ button = get_action(CONTEXT_PITCHSCREEN,TIMEOUT_BLOCK);
+ switch (button) {
+ case ACTION_PS_INC_SMALL:
+ delta = PITCH_SMALL_DELTA;
+ break;
+
+ case ACTION_PS_INC_BIG:
+ delta = PITCH_BIG_DELTA;
+ break;
+
+ case ACTION_PS_DEC_SMALL:
+ delta = -PITCH_SMALL_DELTA;
+ break;
+
+ case ACTION_PS_DEC_BIG:
+ delta = -PITCH_BIG_DELTA;
+ break;
+
+ case ACTION_PS_NUDGE_RIGHT:
+ new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false);
+ nudged = (new_pitch != pitch);
+ pitch = new_pitch;
+ break;
+
+ case ACTION_PS_NUDGE_RIGHTOFF:
+ if (nudged) {
+ pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false);
+ }
+ nudged = false;
+ break;
+
+ case ACTION_PS_NUDGE_LEFT:
+ new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false);
+ nudged = (new_pitch != pitch);
+ pitch = new_pitch;
+ break;
+
+ case ACTION_PS_NUDGE_LEFTOFF:
+ if (nudged) {
+ pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false);
+ }
+ nudged = false;
+ break;
+
+ case ACTION_PS_RESET:
+ pitch = 1000;
+ sound_set_pitch( pitch );
+ break;
+
+ case ACTION_PS_TOGGLE_MODE:
+ pitch_mode = -pitch_mode;
+ break;
+
+ case ACTION_PS_EXIT:
+ exit = true;
+ break;
+
+ default:
+ if(default_event_handler(button) == SYS_USB_CONNECTED)
+ return 1;
+ break;
+ }
+
+ if(delta)
+ {
+ if (pitch_mode == PITCH_MODE_ABSOLUTE) {
+ pitch = pitch_increase(pitch, delta, true);
+ } else {
+ pitch = pitch_increase_semitone(pitch, delta > 0 ? true:false);
+ }
+
+ delta = 0;
+ }
+
+ }
+#if CONFIG_CODEC == SWCODEC
+ pcmbuf_set_low_latency(false);
+#endif
+ lcd_setfont(FONT_UI);
+ return 0;
+}