pitchscreen make it a plugin

full commandline parsing
    -has pitch, speed, time_stretch
 /* pitch_screen
 *  accepts args -q, -g, -p=, -s=, -k=; (= sign is optional)
 * -q silences output splash
 * -g runs the gui (Runs immediately)
 * -p100 would set pitch to 100%
 * -s=90 sets speed to 90% if timestrech is enabled
 * -k=true -k1 enables time stretch -k0 -kf-kn disables
*/

Change-Id: I900c4b5d184e12ddbe47509f66fdf3e55193a520

1 files changed, 2 insertions, 1053 deletions

diff --git a/apps/gui/pitchscreen.c b/apps/gui/pitchscreen.c
index 871921a10f..9f42aedb5d 100644
--- a/apps/gui/pitchscreen.c
+++ b/apps/gui/pitchscreen.c
@@ -18,1059 +18,8 @@
  * KIND, either express or implied.
  *
  ****************************************************************************/
-
-#include <stdbool.h>
-#include <string.h>
-#include <stdio.h>
-#include <math.h>
-#include <stdlib.h> /* for abs() */
-#include "config.h"
-#include "action.h"
-#include "sound.h"
-#include "pcmbuf.h"
-#include "lang.h"
-#include "icons.h"
-#include "screens.h"
-#include "talk.h"
-#include "viewport.h"
-#include "font.h"
-#include "system.h"
-#include "misc.h"
-#include "pitchscreen.h"
-#include "settings.h"
-#include "tdspeed.h"
-
-#define ICON_BORDER 12 /* icons are currently 7x8, so add ~2 pixels  */
-                       /*   on both sides when drawing */
-
-#define PITCH_MAX         (200 * PITCH_SPEED_PRECISION)
-#define PITCH_MIN         (50 * PITCH_SPEED_PRECISION)
-#define PITCH_SMALL_DELTA (PITCH_SPEED_PRECISION / 10)      /* .1% */
-#define PITCH_BIG_DELTA   (PITCH_SPEED_PRECISION)           /*  1% */
-#define PITCH_NUDGE_DELTA (2 * PITCH_SPEED_PRECISION)       /*  2% */
-
-#define SPEED_SMALL_DELTA (PITCH_SPEED_PRECISION / 10)      /* .1% */
-#define SPEED_BIG_DELTA   (PITCH_SPEED_PRECISION)           /*  1% */
-
-#define SEMITONE_SMALL_DELTA (PITCH_SPEED_PRECISION / 10)  /* 10 cents   */
-#define SEMITONE_BIG_DELTA   PITCH_SPEED_PRECISION         /* 1 semitone */
-
-enum
-{
-    PITCH_TOP = 0,
-    PITCH_MID,
-    PITCH_BOTTOM,
-    PITCH_ITEM_COUNT,
-};
-
-
-/* This is a table of semitone percentage values of the appropriate
-   precision (based on PITCH_SPEED_PRECISION).  Note that these are
-   all constant expressions, which will be evaluated at compile time,
-   so no need to worry about how complex the expressions look.
-   That's just to get the precision right.
-
-   I calculated these values, starting from 50, as
-
-   x(n) = 50 * 2^(n/12)
-
-   All that math in each entry simply converts the float constant
-   to an integer equal to PITCH_SPEED_PRECISION times the float value,
-   with as little precision loss as possible (i.e. correctly rounding
-   the last digit).
-*/
-#define TO_INT_WITH_PRECISION(x) \
-    ( (unsigned short)(((x) * PITCH_SPEED_PRECISION * 10 + 5) / 10) )
-
-static const unsigned short semitone_table[] =
-{
-    TO_INT_WITH_PRECISION(50.00000000), /* Octave lower */
-    TO_INT_WITH_PRECISION(52.97315472),
-    TO_INT_WITH_PRECISION(56.12310242),
-    TO_INT_WITH_PRECISION(59.46035575),
-    TO_INT_WITH_PRECISION(62.99605249),
-    TO_INT_WITH_PRECISION(66.74199271),
-    TO_INT_WITH_PRECISION(70.71067812),
-    TO_INT_WITH_PRECISION(74.91535384),
-    TO_INT_WITH_PRECISION(79.37005260),
-    TO_INT_WITH_PRECISION(84.08964153),
-    TO_INT_WITH_PRECISION(89.08987181),
-    TO_INT_WITH_PRECISION(94.38743127),
-    TO_INT_WITH_PRECISION(100.0000000), /* Normal sound */
-    TO_INT_WITH_PRECISION(105.9463094),
-    TO_INT_WITH_PRECISION(112.2462048),
-    TO_INT_WITH_PRECISION(118.9207115),
-    TO_INT_WITH_PRECISION(125.9921049),
-    TO_INT_WITH_PRECISION(133.4839854),
-    TO_INT_WITH_PRECISION(141.4213562),
-    TO_INT_WITH_PRECISION(149.8307077),
-    TO_INT_WITH_PRECISION(158.7401052),
-    TO_INT_WITH_PRECISION(168.1792831),
-    TO_INT_WITH_PRECISION(178.1797436),
-    TO_INT_WITH_PRECISION(188.7748625),
-    TO_INT_WITH_PRECISION(200.0000000)  /* Octave higher */
-};
-
-#define NUM_SEMITONES   ((int)(sizeof(semitone_table)/sizeof(semitone_table[0])))
-#define SEMITONE_END    (NUM_SEMITONES/2)
-#define SEMITONE_START  (-SEMITONE_END)
-
-/* A table of values for approximating the cent curve with
-   linear interpolation.  Multipy the next lowest semitone
-   by this much to find the corresponding cent percentage.
-
-   These values were calculated as
-   x(n) = 100 * 2^(n * 20/1200)
-*/
-
-static const unsigned short cent_interp[] =
-{
-    TO_INT_WITH_PRECISION(100.0000000),
-    TO_INT_WITH_PRECISION(101.1619440),
-    TO_INT_WITH_PRECISION(102.3373892),
-    TO_INT_WITH_PRECISION(103.5264924),
-    TO_INT_WITH_PRECISION(104.7294123),
-    /* this one's the next semitone but we have it here for convenience */
-    TO_INT_WITH_PRECISION(105.9463094),
-};
-
-/* Number of cents between entries in the cent_interp table */
-#define CENT_INTERP_INTERVAL 20
-#define CENT_INTERP_NUM      ((int)(sizeof(cent_interp)/sizeof(cent_interp[0])))
-
-/* This stores whether the pitch and speed are at their own limits */
-/* or that of the timestretching algorithm                         */
-static bool at_limit = false;
-
-/*
- *
- * The pitchscreen is divided into 3 viewports (each row is a viewport)
- * Then each viewport is again divided into 3 colums, each showsing some infos
- * Additionally, on touchscreen, each cell represents a button
- *
- * Below a sketch describing what each cell will show (what's drawn on it)
- * --------------------------
- * |      |        |        | <-- pitch up in the middle (text and button)
- * |      |        |        | <-- arrows for mode toggling on the sides for touchscreen
- * |------------------------|
- * |      |        |        | <-- semitone/speed up/down on the sides
- * |      |        |        | <-- reset pitch&speed in the middle
- * |------------------------|
- * |      |        |        | <-- pitch down in the middle
- * |      |        |        | <-- Two "OK" for exit on the sides for touchscreen
- * |------------------------|
- *
- *
- */
-
-static void speak_pitch_mode(bool enqueue)
-{
-    bool timestretch_mode = global_settings.pitch_mode_timestretch && dsp_timestretch_available();
-    if (timestretch_mode)
-        talk_id(VOICE_PITCH_TIMESTRETCH_MODE, enqueue);
-    if (global_settings.pitch_mode_semitone)
-        talk_id(VOICE_PITCH_SEMITONE_MODE, timestretch_mode ? true : enqueue);
-    else
-        talk_id(VOICE_PITCH_ABSOLUTE_MODE, timestretch_mode ? true : enqueue);
-    return;
-}
-
-/*
- * Fixes the viewports so they represent the 3 rows, and adds a little margin
- * on all sides for the icons (which are drawn outside of the grid
- *
- * The modified viewports need to be passed to the touchscreen handling function
- **/
-static void pitchscreen_fix_viewports(struct viewport *parent,
-        struct viewport pitch_viewports[PITCH_ITEM_COUNT])
-{
-    int i, font_height;
-    font_height = font_get(parent->font)->height;
-    for (i = 0; i < PITCH_ITEM_COUNT; i++)
-    {
-        pitch_viewports[i] = *parent;
-        pitch_viewports[i].height = parent->height / PITCH_ITEM_COUNT;
-        pitch_viewports[i].x += ICON_BORDER;
-        pitch_viewports[i].width -= 2*ICON_BORDER;
-    }
-    pitch_viewports[PITCH_TOP].y      += ICON_BORDER;
-    pitch_viewports[PITCH_TOP].height -= ICON_BORDER;
-
-    if(pitch_viewports[PITCH_MID].height < font_height * 2)
-        pitch_viewports[PITCH_MID].height = font_height * 2;
-
-    pitch_viewports[PITCH_MID].y = pitch_viewports[PITCH_TOP].y
-                                 + pitch_viewports[PITCH_TOP].height;
-
-    pitch_viewports[PITCH_BOTTOM].y = pitch_viewports[PITCH_MID].y
-                                    + pitch_viewports[PITCH_MID].height;
-
-    pitch_viewports[PITCH_BOTTOM].height -= ICON_BORDER;
-}
-
-/* must be called before pitchscreen_draw, or within
- * since it neither clears nor updates the display */
-static void pitchscreen_draw_icons(struct screen *display,
-                                   struct viewport *parent)
-{
-    display->set_viewport(parent);
-    display->mono_bitmap(bitmap_icons_7x8[Icon_UpArrow],
-            parent->width/2 - 3,
-            2, 7, 8);
-    display->mono_bitmap(bitmap_icons_7x8[Icon_DownArrow],
-            parent->width /2 - 3,
-            parent->height - 10, 7, 8);
-    display->mono_bitmap(bitmap_icons_7x8[Icon_FastForward],
-            parent->width - 10,
-            parent->height /2 - 4, 7, 8);
-    display->mono_bitmap(bitmap_icons_7x8[Icon_FastBackward],
-            2,
-            parent->height /2 - 4, 7, 8);
-    display->update_viewport();
-}
-
-static void pitchscreen_draw(struct screen *display, int max_lines,
-                             struct viewport pitch_viewports[PITCH_ITEM_COUNT],
-                             int32_t pitch, int32_t semitone
-                             ,int32_t speed
-                             )
-{
-    const char* ptr;
-    char buf[32];
-    int w, h;
-    bool show_lang_pitch;
-    struct viewport *last_vp = NULL;
-
-     /* "Pitch up/Pitch down" - hide for a small screen,
-      * the text is drawn centered automatically
-      *
-      * note: this assumes 5 lines always fit on a touchscreen (should be
-      * reasonable) */
-    if (max_lines >= 5)
-    {
-        int w, h;
-        struct viewport *vp = &pitch_viewports[PITCH_TOP];
-        last_vp = display->set_viewport(vp);
-        display->clear_viewport();
-#ifdef HAVE_TOUCHSCREEN
-        /* two arrows in the top row, left and right column */
-        char *arrows[] = { "<", ">"};
-        display->getstringsize(arrows[0], &w, &h);
-        display->putsxy(0, vp->height/2 - h/2, arrows[0]);
-        display->putsxy(vp->width - w, vp->height/2 - h/2, arrows[1]);
-#endif
-        /* UP: Pitch Up */
-        if (global_settings.pitch_mode_semitone)
-            ptr = str(LANG_PITCH_UP_SEMITONE);
-        else
-            ptr = str(LANG_PITCH_UP);
-
-        display->getstringsize(ptr, &w, NULL);
-        /* draw text */
-        display->putsxy(vp->width/2 - w/2, 0, ptr);
-        display->update_viewport();
-
-        /* DOWN: Pitch Down */
-        vp = &pitch_viewports[PITCH_BOTTOM];
-        display->set_viewport(vp);
-        display->clear_viewport();
-
-#ifdef HAVE_TOUCHSCREEN
-        ptr = str(LANG_KBD_OK);
-        display->getstringsize(ptr, &w, &h);
-        /* one OK in the middle first column of the vp (at half height) */
-        display->putsxy(vp->width/6 - w/2, vp->height/2 - h/2, ptr);
-        /* one OK in the middle of the last column of the vp (at half height) */
-        display->putsxy(5*vp->width/6 - w/2, vp->height/2 - h/2, ptr);
-#endif
-        if (global_settings.pitch_mode_semitone)
-            ptr = str(LANG_PITCH_DOWN_SEMITONE);
-        else
-            ptr = str(LANG_PITCH_DOWN);
-        display->getstringsize(ptr, &w, &h);
-        /* draw text */
-        display->putsxy(vp->width/2 - w/2, vp->height - h, ptr);
-        display->update_viewport();
-    }
-
-    /* Middle section */
-    display->set_viewport(&pitch_viewports[PITCH_MID]);
-    display->clear_viewport();
-    int width_used = 0;
-
-    /* Middle section upper line - hide for a small screen */
-    if ((show_lang_pitch = (max_lines >= 3)))
-    {
-        if(global_settings.pitch_mode_timestretch)
-        {
-            /* Pitch:XXX.X% */
-            if(global_settings.pitch_mode_semitone)
-            {
-                snprintf(buf, sizeof(buf), "%s: %s%d.%02d", str(LANG_PITCH),
-                         semitone >= 0 ? "+" : "-",
-                         abs(semitone / PITCH_SPEED_PRECISION),
-                         abs((semitone % PITCH_SPEED_PRECISION) /
-                                         (PITCH_SPEED_PRECISION / 100))
-                        );
-            }
-            else
-            {
-                snprintf(buf, sizeof(buf), "%s: %ld.%ld%%", str(LANG_PITCH),
-                         pitch / PITCH_SPEED_PRECISION,
-                         (pitch % PITCH_SPEED_PRECISION) /
-                         (PITCH_SPEED_PRECISION / 10));
-            }
-        }
-        else
-        {
-            /* Rate */
-            snprintf(buf, sizeof(buf), "%s:", str(LANG_PLAYBACK_RATE));
-        }
-        display->getstringsize(buf, &w, &h);
-        display->putsxy((pitch_viewports[PITCH_MID].width  / 2) - (w / 2),
-                        (pitch_viewports[PITCH_MID].height / 2) - h, buf);
-        if (w > width_used)
-            width_used = w;
-    }
-
-    /* Middle section lower line */
-    /* "Speed:XXX%" */
-    if(global_settings.pitch_mode_timestretch)
-    {
-        snprintf(buf, sizeof(buf), "%s: %ld.%ld%%", str(LANG_SPEED),
-                 speed / PITCH_SPEED_PRECISION,
-                 (speed % PITCH_SPEED_PRECISION) / (PITCH_SPEED_PRECISION / 10));
-    }
-    else
-    {
-        if(global_settings.pitch_mode_semitone)
-        {
-            snprintf(buf, sizeof(buf), "%s%d.%02d",
-                     semitone >= 0 ? "+" : "-",
-                     abs(semitone / PITCH_SPEED_PRECISION),
-                     abs((semitone % PITCH_SPEED_PRECISION) /
-                                     (PITCH_SPEED_PRECISION / 100))
-                    );
-        }
-        else
-        {
-            snprintf(buf, sizeof(buf), "%ld.%ld%%",
-                     pitch / PITCH_SPEED_PRECISION,
-                     (pitch  % PITCH_SPEED_PRECISION) / (PITCH_SPEED_PRECISION / 10));
-        }
-    }
-
-    display->getstringsize(buf, &w, &h);
-    display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2),
-        show_lang_pitch ? (pitch_viewports[PITCH_MID].height / 2) :
-                          (pitch_viewports[PITCH_MID].height / 2) - (h / 2),
-        buf);
-    if (w > width_used)
-        width_used = w;
-
-    /* "limit" and "timestretch" labels */
-    if (max_lines >= 7)
-    {
-        if(at_limit)
-        {
-            const char * const p = str(LANG_STRETCH_LIMIT);
-            display->getstringsize(p, &w, &h);
-            display->putsxy((pitch_viewports[PITCH_MID].width / 2) - (w / 2),
-                            (pitch_viewports[PITCH_MID].height / 2) + h, p);
-            if (w > width_used)
-                width_used = w;
-        }
-    }
-
-    /* Middle section left/right labels */
-    const char *leftlabel = "-2%";
-    const char *rightlabel = "+2%";
-    if (global_settings.pitch_mode_timestretch)
-    {
-        leftlabel = "<<";
-        rightlabel = ">>";
-    }
-
-    /* Only display if they fit */
-    display->getstringsize(leftlabel, &w, &h);
-    width_used += w;
-    display->getstringsize(rightlabel, &w, &h);
-    width_used += w;
-
-    if (width_used <= pitch_viewports[PITCH_MID].width)
-    {
-        display->putsxy(0, (pitch_viewports[PITCH_MID].height / 2) - (h / 2),
-                        leftlabel);
-        display->putsxy((pitch_viewports[PITCH_MID].width - w),
-                        (pitch_viewports[PITCH_MID].height / 2) - (h / 2),
-                        rightlabel);
-    }
-    display->update_viewport();
-    display->set_viewport(last_vp);
-}
-
-static int32_t pitch_increase(int32_t pitch, int32_t pitch_delta, bool allow_cutoff
-                          /* need this to maintain correct pitch/speed caps */
-                          , int32_t speed
-                          )
-{
-    int32_t new_pitch;
-    int32_t new_stretch;
-    at_limit = false;
-
-    if (pitch_delta < 0)
-    {
-        /* for large jumps, snap up to whole numbers */
-        if(allow_cutoff && pitch_delta <= -PITCH_SPEED_PRECISION &&
-           (pitch + pitch_delta) % PITCH_SPEED_PRECISION != 0)
-        {
-            pitch_delta += PITCH_SPEED_PRECISION - ((pitch + pitch_delta) % PITCH_SPEED_PRECISION);
-        }
-
-        new_pitch = pitch + pitch_delta;
-
-        if (new_pitch < PITCH_MIN)
-        {
-            if (!allow_cutoff)
-            {
-                return pitch;
-            }
-            new_pitch = PITCH_MIN;
-            at_limit = true;
-        }
-    }
-    else if (pitch_delta > 0)
-    {
-        /* for large jumps, snap down to whole numbers */
-        if(allow_cutoff && pitch_delta >= PITCH_SPEED_PRECISION &&
-           (pitch + pitch_delta) % PITCH_SPEED_PRECISION != 0)
-        {
-            pitch_delta -= (pitch + pitch_delta) % PITCH_SPEED_PRECISION;
-        }
-
-        new_pitch = pitch + pitch_delta;
-
-        if (new_pitch > PITCH_MAX)
-        {
-            if (!allow_cutoff)
-                return pitch;
-            new_pitch = PITCH_MAX;
-            at_limit = true;
-        }
-    }
-    else
-    {
-        /* pitch_delta == 0 -> no real change */
-        return pitch;
-    }
-    if (dsp_timestretch_available())
-    {
-        /* increase the multiple to increase precision of this calculation */
-        new_stretch = GET_STRETCH(new_pitch, speed);
-        if(new_stretch < STRETCH_MIN)
-        {
-            /* we have to ignore allow_cutoff, because we can't have the */
-            /* stretch go higher than STRETCH_MAX                        */
-            new_pitch = GET_PITCH(speed, STRETCH_MIN);
-        }
-        else if(new_stretch > STRETCH_MAX)
-        {
-            /* we have to ignore allow_cutoff, because we can't have the */
-            /* stretch go higher than STRETCH_MAX                        */
-            new_pitch = GET_PITCH(speed, STRETCH_MAX);
-        }
-
-        if(new_stretch >= STRETCH_MAX ||
-           new_stretch <= STRETCH_MIN)
-        {
-            at_limit = true;
-        }
-    }
-
-    sound_set_pitch(new_pitch);
-
-    return new_pitch;
-}
-
-static int32_t get_semitone_from_pitch(int32_t pitch)
-{
-    int semitone = 0;
-    int32_t fractional_index = 0;
-
-    while(semitone < NUM_SEMITONES - 1 &&
-          pitch >= semitone_table[semitone + 1])
-    {
-        semitone++;
-    }
-
-
-    /* now find the fractional part */
-    while(pitch > (cent_interp[fractional_index + 1] *
-                   semitone_table[semitone] / PITCH_SPEED_100))
-    {
-        /* Check to make sure fractional_index isn't too big */
-        /* This should never happen. */
-        if(fractional_index >= CENT_INTERP_NUM - 1)
-        {
-            break;
-        }
-        fractional_index++;
-    }
-
-    int32_t semitone_pitch_a = cent_interp[fractional_index] *
-                               semitone_table[semitone] /
-                               PITCH_SPEED_100;
-    int32_t semitone_pitch_b = cent_interp[fractional_index + 1] *
-                               semitone_table[semitone] /
-                               PITCH_SPEED_100;
-    /* this will be the integer offset from the cent_interp entry */
-    int32_t semitone_frac_ofs = (pitch - semitone_pitch_a) * CENT_INTERP_INTERVAL /
-                            (semitone_pitch_b - semitone_pitch_a);
-    semitone = (semitone + SEMITONE_START) * PITCH_SPEED_PRECISION +
-                     fractional_index * CENT_INTERP_INTERVAL +
-                     semitone_frac_ofs;
-
-    return semitone;
-}
-
-static int32_t get_pitch_from_semitone(int32_t semitone)
-{
-    int32_t adjusted_semitone = semitone - SEMITONE_START * PITCH_SPEED_PRECISION;
-
-    /* Find the index into the semitone table */
-    int32_t semitone_index = (adjusted_semitone / PITCH_SPEED_PRECISION);
-
-    /* set pitch to the semitone's integer part value */
-    int32_t pitch = semitone_table[semitone_index];
-    /* get the range of the cent modification for future calculation */
-    int32_t pitch_mod_a =
-        cent_interp[(adjusted_semitone % PITCH_SPEED_PRECISION) /
-                    CENT_INTERP_INTERVAL];
-    int32_t pitch_mod_b =
-        cent_interp[(adjusted_semitone % PITCH_SPEED_PRECISION) /
-                    CENT_INTERP_INTERVAL + 1];
-    /* figure out the cent mod amount based on the semitone fractional value */
-    int32_t pitch_mod = pitch_mod_a + (pitch_mod_b - pitch_mod_a) *
-                   (adjusted_semitone % CENT_INTERP_INTERVAL) / CENT_INTERP_INTERVAL;
-
-    /* modify pitch based on the mod amount we just calculated */
-    return (pitch * pitch_mod  + PITCH_SPEED_100 / 2) / PITCH_SPEED_100;
-}
-
-static int32_t pitch_increase_semitone(int32_t pitch,
-                                       int32_t current_semitone,
-                                       int32_t semitone_delta
-                                       , int32_t speed
-                                      )
-{
-    int32_t new_semitone = current_semitone;
-
-    /* snap to the delta interval */
-    if(current_semitone % semitone_delta != 0)
-    {
-        if(current_semitone > 0 && semitone_delta > 0)
-            new_semitone += semitone_delta;
-        else if(current_semitone < 0 && semitone_delta < 0)
-            new_semitone += semitone_delta;
-
-        new_semitone -= new_semitone % semitone_delta;
-    }
-    else
-        new_semitone += semitone_delta;
-
-    /* clamp the pitch so it doesn't go beyond the pitch limits */
-    if(new_semitone < (SEMITONE_START * PITCH_SPEED_PRECISION))
-    {
-        new_semitone = SEMITONE_START * PITCH_SPEED_PRECISION;
-        at_limit = true;
-    }
-    else if(new_semitone > (SEMITONE_END * PITCH_SPEED_PRECISION))
-    {
-        new_semitone = SEMITONE_END * PITCH_SPEED_PRECISION;
-        at_limit = true;
-    }
-
-    int32_t new_pitch = get_pitch_from_semitone(new_semitone);
-
-    int32_t new_stretch = GET_STRETCH(new_pitch, speed);
-
-    /* clamp the pitch so it doesn't go beyond the stretch limits */
-    if( new_stretch > STRETCH_MAX)
-    {
-        new_pitch = GET_PITCH(speed, STRETCH_MAX);
-        new_semitone = get_semitone_from_pitch(new_pitch);
-        at_limit = true;
-    }
-    else if (new_stretch < STRETCH_MIN)
-    {
-        new_pitch = GET_PITCH(speed, STRETCH_MIN);
-        new_semitone = get_semitone_from_pitch(new_pitch);
-        at_limit = true;
-    }
-
-    pitch_increase(pitch, new_pitch - pitch, false
-                   , speed
-                   );
-
-    return new_semitone;
-}
-
-#ifdef HAVE_TOUCHSCREEN
-/*
- * Check for touchscreen presses as per sketch above in this file
- *
- * goes through each row of the, checks whether the touchscreen
- * was pressed in it. Then it looks the columns of each row for specific actions
- */
-static int pitchscreen_do_touchscreen(struct viewport vps[])
-{
-    short x, y;
-    struct viewport *this_vp = &vps[PITCH_TOP];
-    int ret;
-    static bool wait_for_release = false;
-    ret = action_get_touchscreen_press_in_vp(&x, &y, this_vp);
-
-    /* top row */
-    if (ret > ACTION_UNKNOWN)
-    {   /* press on top row, left or right column
-         * only toggle mode if released */
-        int column = this_vp->width / 3;
-        if ((x < column || x > (2*column)) && (ret == BUTTON_REL))
-            return ACTION_PS_TOGGLE_MODE;
-
-
-        else if (x >= column && x <= (2*column))
-        {   /* center column pressed */
-            if (ret == BUTTON_REPEAT)
-                return ACTION_PS_INC_BIG;
-            else if (ret & BUTTON_REL)
-                return ACTION_PS_INC_SMALL;
-        }
-        return ACTION_NONE;
-    }
-
-    /* now the center row */
-    this_vp = &vps[PITCH_MID];
-    ret = action_get_touchscreen_press_in_vp(&x, &y, this_vp);
-
-    if (ret > ACTION_UNKNOWN)
-    {
-        int column = this_vp->width / 3;
-
-        if (x < column)
-        {   /* left column */
-            if (ret & BUTTON_REL)
-            {
-                wait_for_release = false;
-                return ACTION_PS_NUDGE_LEFTOFF;
-            }
-            else if (ret & BUTTON_REPEAT)
-                return ACTION_PS_SLOWER;
-            if (!wait_for_release)
-            {
-                wait_for_release = true;
-                return ACTION_PS_NUDGE_LEFT;
-            }
-        }
-        else if (x > (2*column))
-        {   /* right column */
-            if (ret & BUTTON_REL)
-            {
-                wait_for_release = false;
-                return ACTION_PS_NUDGE_RIGHTOFF;
-            }
-            else if (ret & BUTTON_REPEAT)
-                return ACTION_PS_FASTER;
-            if (!wait_for_release)
-            {
-                wait_for_release = true;
-                return ACTION_PS_NUDGE_RIGHT;
-            }
-        }
-        else
-            /* center column was pressed */
-            return ACTION_PS_RESET;
-    }
-
-    /* now the bottom row */
-    this_vp = &vps[PITCH_BOTTOM];
-    ret = action_get_touchscreen_press_in_vp(&x, &y, this_vp);
-
-    if (ret > ACTION_UNKNOWN)
-    {
-        int column = this_vp->width / 3;
-
-        /* left or right column is exit */
-        if ((x < column || x > (2*column)) && (ret == BUTTON_REL))
-            return ACTION_PS_EXIT;
-        else if (x >= column && x <= (2*column))
-        {   /* center column was pressed */
-            if (ret & BUTTON_REPEAT)
-                return ACTION_PS_DEC_BIG;
-            else if (ret & BUTTON_REL)
-                return ACTION_PS_DEC_SMALL;
-        }
-        return ACTION_NONE;
-    }
-    return ACTION_NONE;
-}
-
-#endif
-/*
-    returns:
-    0 on exit
-    1 if USB was connected
-*/
-
+#include "plugin.h"
 int gui_syncpitchscreen_run(void)
 {
-    int button;
-    int32_t pitch = sound_get_pitch();
-    int32_t semitone;
-
-    int32_t new_pitch;
-    int32_t pitch_delta;
-    bool nudged = false;
-    int i, updated = 4, decimals = 0;
-    bool exit = false;
-    /* should maybe be passed per parameter later, not needed for now */
-    struct viewport parent[NB_SCREENS];
-    struct viewport pitch_viewports[NB_SCREENS][PITCH_ITEM_COUNT];
-    int max_lines[NB_SCREENS];
-
-    push_current_activity(ACTIVITY_PITCHSCREEN);
-
-    int32_t new_speed = 0, new_stretch;
-
-    /* the speed variable holds the apparent speed of the playback */
-    int32_t speed;
-    if (dsp_timestretch_available())
-    {
-        speed = GET_SPEED(pitch, dsp_get_timestretch());
-    }
-    else
-    {
-        speed = pitch;
-    }
-
-    /* Figure out whether to be in timestretch mode */
-    if (global_settings.pitch_mode_timestretch && !dsp_timestretch_available())
-    {
-        global_settings.pitch_mode_timestretch = false;
-        settings_save();
-    }
-
-    /* Count decimals for speaking */
-    for (i = PITCH_SPEED_PRECISION; i >= 10; i /= 10)
-        decimals++;
-
-    /* set the semitone index based on the current pitch */
-    semitone = get_semitone_from_pitch(pitch);
-
-    /* initialize pitchscreen vps */
-    FOR_NB_SCREENS(i)
-    {
-        viewport_set_defaults(&parent[i], i);
-        max_lines[i] = viewport_get_nb_lines(&parent[i]);
-        pitchscreen_fix_viewports(&parent[i], pitch_viewports[i]);
-        screens[i].set_viewport(&parent[i]);
-        screens[i].clear_viewport();
-
-        /* also, draw the icons now, it's only needed once */
-        pitchscreen_draw_icons(&screens[i], &parent[i]);
-    }
-    pcmbuf_set_low_latency(true);
-
-    while (!exit)
-    {
-        FOR_NB_SCREENS(i)
-            pitchscreen_draw(&screens[i], max_lines[i],
-                              pitch_viewports[i], pitch, semitone
-                              , speed
-                              );
-        pitch_delta = 0;
-        new_speed = 0;
-
-        if (global_settings.talk_menu && updated)
-        {
-            talk_shutup();
-            switch (updated)
-            {
-            case 1:
-                if (global_settings.pitch_mode_semitone)
-                    talk_value_decimal(semitone, UNIT_SIGNED, decimals, false);
-                else
-                    talk_value_decimal(pitch, UNIT_PERCENT, decimals, false);
-                break;
-            case 2:
-                talk_value_decimal(speed, UNIT_PERCENT, decimals, false);
-                break;
-            case 3:
-                speak_pitch_mode(false);
-                break;
-            case 4:
-                if (global_settings.pitch_mode_timestretch && dsp_timestretch_available())
-                    talk_id(LANG_PITCH, false);
-                else
-                    talk_id(LANG_PLAYBACK_RATE, false);
-                talk_value_decimal(pitch, UNIT_PERCENT, decimals, true);
-                if (global_settings.pitch_mode_timestretch && dsp_timestretch_available())
-                {
-                    talk_id(LANG_SPEED, true);
-                    talk_value_decimal(speed, UNIT_PERCENT, decimals, true);
-                }
-                speak_pitch_mode(true);
-                break;
-            default:
-                break;
-            }
-        }
-        updated = 0;
-
-        button = get_action(CONTEXT_PITCHSCREEN, HZ);
-
-#ifdef HAVE_TOUCHSCREEN
-        if (button == ACTION_TOUCHSCREEN)
-        {
-            FOR_NB_SCREENS(i)
-                button = pitchscreen_do_touchscreen(pitch_viewports[i]);
-        }
-#endif
-        switch (button)
-        {
-            case ACTION_PS_INC_SMALL:
-                if(global_settings.pitch_mode_semitone)
-                    pitch_delta = SEMITONE_SMALL_DELTA;
-                else
-                    pitch_delta = PITCH_SMALL_DELTA;
-                updated = 1;
-                break;
-
-            case ACTION_PS_INC_BIG:
-                if(global_settings.pitch_mode_semitone)
-                    pitch_delta = SEMITONE_BIG_DELTA;
-                else
-                    pitch_delta = PITCH_BIG_DELTA;
-                updated = 1;
-                break;
-
-            case ACTION_PS_DEC_SMALL:
-                if(global_settings.pitch_mode_semitone)
-                    pitch_delta = -SEMITONE_SMALL_DELTA;
-                else
-                    pitch_delta = -PITCH_SMALL_DELTA;
-                updated = 1;
-                break;
-
-            case ACTION_PS_DEC_BIG:
-                if(global_settings.pitch_mode_semitone)
-                    pitch_delta = -SEMITONE_BIG_DELTA;
-                else
-                    pitch_delta = -PITCH_BIG_DELTA;
-                updated = 1;
-                break;
-
-            case ACTION_PS_NUDGE_RIGHT:
-                if (!global_settings.pitch_mode_timestretch)
-                {
-                    new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false
-                                               , speed
-                        );
-                    nudged = (new_pitch != pitch);
-                    pitch = new_pitch;
-                    semitone = get_semitone_from_pitch(pitch);
-                    speed = pitch;
-                    updated = nudged ? 1 : 0;
-                    break;
-                }
-                else
-                {
-                    new_speed = speed + SPEED_SMALL_DELTA;
-                    at_limit = false;
-                    updated = 2;
-                }
-                break;
-
-            case ACTION_PS_FASTER:
-                if (global_settings.pitch_mode_timestretch)
-                {
-                    new_speed = speed + SPEED_BIG_DELTA;
-                    /* snap to whole numbers */
-                    if(new_speed % PITCH_SPEED_PRECISION != 0)
-                        new_speed -= new_speed % PITCH_SPEED_PRECISION;
-                    at_limit = false;
-                    updated = 2;
-                }
-                break;
-
-            case ACTION_PS_NUDGE_RIGHTOFF:
-                if (nudged)
-                {
-                    pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false
-                                           , speed
-                        );
-                    speed = pitch;
-                    semitone = get_semitone_from_pitch(pitch);
-                    nudged = false;
-                    updated = 1;
-                }
-                break;
-
-            case ACTION_PS_NUDGE_LEFT:
-                if (!global_settings.pitch_mode_timestretch)
-                {
-                    new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false
-                                               , speed
-                        );
-                    nudged = (new_pitch != pitch);
-                    pitch = new_pitch;
-                    semitone = get_semitone_from_pitch(pitch);
-                    speed = pitch;
-                    updated = nudged ? 1 : 0;
-                    break;
-                }
-                else
-                {
-                    new_speed = speed - SPEED_SMALL_DELTA;
-                    at_limit = false;
-                    updated = 2;
-                }
-                break;
-
-            case ACTION_PS_SLOWER:
-                if (global_settings.pitch_mode_timestretch)
-                {
-                    new_speed = speed - SPEED_BIG_DELTA;
-                    /* snap to whole numbers */
-                    if(new_speed % PITCH_SPEED_PRECISION != 0)
-                        new_speed += PITCH_SPEED_PRECISION - speed % PITCH_SPEED_PRECISION;
-                    at_limit = false;
-                    updated = 2;
-                }
-                break;
-
-            case ACTION_PS_NUDGE_LEFTOFF:
-                if (nudged)
-                {
-                    pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false
-                                           , speed
-                        );
-                    speed = pitch;
-                    semitone = get_semitone_from_pitch(pitch);
-                    nudged = false;
-                    updated = 1;
-                }
-                break;
-
-            case ACTION_PS_RESET:
-                pitch = PITCH_SPEED_100;
-                sound_set_pitch(pitch);
-                speed = PITCH_SPEED_100;
-                if (dsp_timestretch_available())
-                {
-                    dsp_set_timestretch(PITCH_SPEED_100);
-                    at_limit = false;
-                }
-                semitone = get_semitone_from_pitch(pitch);
-                updated = 4;
-                break;
-
-            case ACTION_PS_TOGGLE_MODE:
-                global_settings.pitch_mode_semitone = !global_settings.pitch_mode_semitone;
-
-                if (dsp_timestretch_available() && !global_settings.pitch_mode_semitone)
-                {
-                    global_settings.pitch_mode_timestretch = !global_settings.pitch_mode_timestretch;
-                    if(!global_settings.pitch_mode_timestretch)
-                    {
-                        /* no longer in timestretch mode.  Reset speed */
-                        speed = pitch;
-                        dsp_set_timestretch(PITCH_SPEED_100);
-                    }
-                }
-                settings_save();
-                updated = 3;
-                break;
-
-            case ACTION_PS_EXIT:
-                exit = true;
-                break;
-
-            default:
-                if (default_event_handler(button) == SYS_USB_CONNECTED)
-                    return 1;
-                break;
-        }
-        if (pitch_delta)
-        {
-            if (global_settings.pitch_mode_semitone)
-            {
-                semitone = pitch_increase_semitone(pitch, semitone, pitch_delta
-                                                , speed
-                );
-                pitch = get_pitch_from_semitone(semitone);
-            }
-            else
-            {
-                pitch = pitch_increase(pitch, pitch_delta, true
-                                       , speed
-                );
-                semitone = get_semitone_from_pitch(pitch);
-            }
-            if (global_settings.pitch_mode_timestretch)
-            {
-                /* do this to make sure we properly obey the stretch limits */
-                new_speed = speed;
-            }
-            else
-            {
-                speed = pitch;
-            }
-        }
-
-        if(new_speed)
-        {
-            new_stretch = GET_STRETCH(pitch, new_speed);
-
-            /* limit the amount of stretch */
-            if(new_stretch > STRETCH_MAX)
-            {
-                new_stretch = STRETCH_MAX;
-                new_speed = GET_SPEED(pitch, new_stretch);
-            }
-            else if(new_stretch < STRETCH_MIN)
-            {
-                new_stretch = STRETCH_MIN;
-                new_speed = GET_SPEED(pitch, new_stretch);
-            }
-
-            new_stretch = GET_STRETCH(pitch, new_speed);
-            if(new_stretch >= STRETCH_MAX ||
-               new_stretch <= STRETCH_MIN)
-            {
-                at_limit = true;
-            }
-
-            /* set the amount of stretch */
-            dsp_set_timestretch(new_stretch);
-
-            /* update the speed variable with the new speed */
-            speed = new_speed;
-
-            /* Reset new_speed so we only call dsp_set_timestretch */
-            /* when needed                                         */
-            new_speed = 0;
-        }
-    }
-
-    pcmbuf_set_low_latency(false);
-    pop_current_activity();
-
-    /* Clean up */
-    FOR_NB_SCREENS(i)
-    {
-        screens[i].set_viewport(NULL);
-    }
-
-    return 0;
+    return (plugin_load(VIEWERS_DIR"/pitch_screen.rock", NULL) == PLUGIN_USB_CONNECTED);
 }