static int timestretch_callback(int action,const struct menu_item_ex *this_item)
{
switch (action)
{
case ACTION_EXIT_MENUITEM: /* on exit */
if (global_settings.timestretch_enabled && !dsp_timestretch_available())
splash(HZ*2, ID2P(LANG_PLEASE_REBOOT));
break;
}
lowlatency_callback(action, this_item);
return action;
}
int gui_syncpitchscreen_run(void)
{
int button, i;
int32_t pitch = sound_get_pitch();
int32_t semitone;
int32_t new_pitch;
int32_t pitch_delta;
bool nudged = false;
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];
#if CONFIG_CODEC == SWCODEC
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();
}
#endif
/* 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]);
}
#if CONFIG_CODEC == SWCODEC
pcmbuf_set_low_latency(true);
#endif
while (!exit)
{
FOR_NB_SCREENS(i)
pitchscreen_draw(&screens[i], max_lines[i],
pitch_viewports[i], pitch, semitone
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
pitch_delta = 0;
#if CONFIG_CODEC == SWCODEC
new_speed = 0;
#endif
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;
break;
case ACTION_PS_INC_BIG:
if(global_settings.pitch_mode_semitone)
pitch_delta = SEMITONE_BIG_DELTA;
else
pitch_delta = PITCH_BIG_DELTA;
break;
case ACTION_PS_DEC_SMALL:
if(global_settings.pitch_mode_semitone)
pitch_delta = -SEMITONE_SMALL_DELTA;
else
pitch_delta = -PITCH_SMALL_DELTA;
break;
case ACTION_PS_DEC_BIG:
if(global_settings.pitch_mode_semitone)
pitch_delta = -SEMITONE_BIG_DELTA;
else
pitch_delta = -PITCH_BIG_DELTA;
break;
case ACTION_PS_NUDGE_RIGHT:
#if CONFIG_CODEC == SWCODEC
if (!global_settings.pitch_mode_timestretch)
{
#endif
new_pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
nudged = (new_pitch != pitch);
pitch = new_pitch;
semitone = get_semitone_from_pitch(pitch);
#if CONFIG_CODEC == SWCODEC
speed = pitch;
#endif
break;
#if CONFIG_CODEC == SWCODEC
}
else
{
new_speed = speed + SPEED_SMALL_DELTA;
at_limit = false;
}
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;
}
break;
#endif
case ACTION_PS_NUDGE_RIGHTOFF:
if (nudged)
{
pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
#if CONFIG_CODEC == SWCODEC
speed = pitch;
#endif
semitone = get_semitone_from_pitch(pitch);
nudged = false;
}
break;
case ACTION_PS_NUDGE_LEFT:
#if CONFIG_CODEC == SWCODEC
if (!global_settings.pitch_mode_timestretch)
{
#endif
new_pitch = pitch_increase(pitch, -PITCH_NUDGE_DELTA, false
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
nudged = (new_pitch != pitch);
pitch = new_pitch;
semitone = get_semitone_from_pitch(pitch);
#if CONFIG_CODEC == SWCODEC
speed = pitch;
#endif
break;
#if CONFIG_CODEC == SWCODEC
}
else
{
new_speed = speed - SPEED_SMALL_DELTA;
at_limit = false;
}
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;
}
break;
#endif
case ACTION_PS_NUDGE_LEFTOFF:
if (nudged)
{
pitch = pitch_increase(pitch, PITCH_NUDGE_DELTA, false
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
#if CONFIG_CODEC == SWCODEC
speed = pitch;
#endif
semitone = get_semitone_from_pitch(pitch);
nudged = false;
}
break;
case ACTION_PS_RESET:
pitch = PITCH_SPEED_100;
sound_set_pitch(pitch);
#if CONFIG_CODEC == SWCODEC
speed = PITCH_SPEED_100;
if (dsp_timestretch_available())
{
dsp_set_timestretch(PITCH_SPEED_100);
at_limit = false;
}
#endif
semitone = get_semitone_from_pitch(pitch);
break;
case ACTION_PS_TOGGLE_MODE:
global_settings.pitch_mode_semitone = !global_settings.pitch_mode_semitone;
#if CONFIG_CODEC == SWCODEC
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();
#endif
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
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
pitch = get_pitch_from_semitone(semitone);
}
else
{
pitch = pitch_increase(pitch, pitch_delta, true
#if CONFIG_CODEC == SWCODEC
, speed
#endif
);
semitone = get_semitone_from_pitch(pitch);
}
#if CONFIG_CODEC == SWCODEC
if (global_settings.pitch_mode_timestretch)
{
/* do this to make sure we properly obey the stretch limits */
new_speed = speed;
}
else
{
speed = pitch;
}
#endif
}
#if CONFIG_CODEC == SWCODEC
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;
}
#endif
}
#if CONFIG_CODEC == SWCODEC
pcmbuf_set_low_latency(false);
#endif
return 0;
}
static int32_t pitch_increase(int32_t pitch, int32_t pitch_delta, bool allow_cutoff
#if CONFIG_CODEC == SWCODEC
/* need this to maintain correct pitch/speed caps */
, int32_t speed
#endif
)
{
int32_t new_pitch;
#if CONFIG_CODEC == SWCODEC
int32_t new_stretch;
#endif
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 CONFIG_CODEC == SWCODEC
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;
}
}
#endif
sound_set_pitch(new_pitch);
return new_pitch;
}