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; }