/*  _______         ____    __         ___    ___ * \    _  \       \    /  \  /       \   \  /   /       '   '  ' *  |  | \  \       |  |    ||         |   \/   |         .      . *  |  |  |  |      |  |    ||         ||\  /|  | *  |  |  |  |      |  |    ||         || \/ |  |         '  '  ' *  |  |  |  |      |  |    ||         ||    |  |         .      . *  |  |_/  /        \  \__//          ||    |  | * /_______/ynamic    \____/niversal  /__\  /____\usic   /|  .  . ibliotheque *                                                      /  \ *                                                     / .  \ * itrender.c - Code to render an Impulse Tracker     / / \  \ *              module.                              | <  /   \_ *                                                   |  \/ /\   / * Written - painstakingly - by entheh.               \_  /  > / *                                                      | \ / / *                                                      |  ' / *                                                       \__/ */ #include <math.h>#include <stdlib.h>#include <string.h> #include "dumb.h"#include "internal/dumb.h"#include "internal/it.h"#include "internal/lpc.h" #include "internal/resampler.h" // Keep this disabled, as it's actually slower than the original C/integer// version////#ifdef __APPLE__//#include <TargetConditionals.h>//#if TARGET_CPU_ARM || TARGET_CPU_ARM64//#include <arm_neon.h>//#define FILTER_NEON//#endif//#endif // #define BIT_ARRAY_BULLSHIT static IT_PLAYING *new_playing(void) {    IT_PLAYING *r = (IT_PLAYING *)malloc(sizeof(*r));    if (r) {        r->resampler.fir_resampler_ratio = 0.0;        r->resampler.fir_resampler[0] = resampler_create();        if (!r->resampler.fir_resampler[0]) {            free(r);            return NULL;        }        r->resampler.fir_resampler[1] = resampler_create();        if (!r->resampler.fir_resampler[1]) {            resampler_delete(r->resampler.fir_resampler[0]);            free(r);            return NULL;        }    }    return r;} static void free_playing(IT_PLAYING *r) {    resampler_delete(r->resampler.fir_resampler[1]);    resampler_delete(r->resampler.fir_resampler[0]);    free(r);} static IT_PLAYING *dup_playing(IT_PLAYING *src, IT_CHANNEL *dstchannel,                               IT_CHANNEL *srcchannel) {    IT_PLAYING *dst;     if (!src)        return NULL;     dst = malloc(sizeof(*dst));    if (!dst)        return NULL;     dst->flags = src->flags;    dst->resampling_quality = src->resampling_quality;     ASSERT(src->channel);    dst->channel = &dstchannel[src->channel - srcchannel];    dst->sample = src->sample;    dst->instrument = src->instrument;    dst->env_instrument = src->env_instrument;     dst->sampnum = src->sampnum;    dst->instnum = src->instnum;     dst->declick_stage = src->declick_stage;     dst->float_volume[0] = src->float_volume[0];    dst->float_volume[1] = src->float_volume[1];     dst->ramp_volume[0] = src->ramp_volume[0];    dst->ramp_volume[1] = src->ramp_volume[1];     dst->ramp_delta[0] = src->ramp_delta[0];    dst->ramp_delta[1] = src->ramp_delta[1];     dst->channel_volume = src->channel_volume;     dst->volume = src->volume;    dst->pan = src->pan;     dst->volume_offset = src->volume_offset;    dst->panning_offset = src->panning_offset;     dst->note = src->note;     dst->enabled_envelopes = src->enabled_envelopes;     dst->filter_cutoff = src->filter_cutoff;    dst->filter_resonance = src->filter_resonance;     dst->true_filter_cutoff = src->true_filter_cutoff;    dst->true_filter_resonance = src->true_filter_resonance;     dst->vibrato_speed = src->vibrato_speed;    dst->vibrato_depth = src->vibrato_depth;    dst->vibrato_n = src->vibrato_n;    dst->vibrato_time = src->vibrato_time;    dst->vibrato_waveform = src->vibrato_waveform;     dst->tremolo_speed = src->tremolo_speed;    dst->tremolo_depth = src->tremolo_depth;    dst->tremolo_time = src->tremolo_time;    dst->tremolo_waveform = src->tremolo_waveform;     dst->panbrello_speed = src->panbrello_speed;    dst->panbrello_depth = src->panbrello_depth;    dst->panbrello_time = src->panbrello_time;    dst->panbrello_waveform = src->panbrello_waveform;    dst->panbrello_random = src->panbrello_random;     dst->sample_vibrato_time = src->sample_vibrato_time;    dst->sample_vibrato_waveform = src->sample_vibrato_waveform;    dst->sample_vibrato_depth = src->sample_vibrato_depth;     dst->slide = src->slide;    dst->delta = src->delta;    dst->finetune = src->finetune;     dst->volume_envelope = src->volume_envelope;    dst->pan_envelope = src->pan_envelope;    dst->pitch_envelope = src->pitch_envelope;     dst->fadeoutcount = src->fadeoutcount;     dst->filter_state[0] = src->filter_state[0];    dst->filter_state[1] = src->filter_state[1];     dst->resampler = src->resampler;    dst->resampler.pickup_data = dst;    dst->resampler.fir_resampler_ratio = src->resampler.fir_resampler_ratio;    dst->resampler.fir_resampler[0] =        resampler_dup(src->resampler.fir_resampler[0]);    if (!dst->resampler.fir_resampler[0]) {        free(dst);        return NULL;    }    dst->resampler.fir_resampler[1] =        resampler_dup(src->resampler.fir_resampler[1]);    if (!dst->resampler.fir_resampler[1]) {        resampler_delete(dst->resampler.fir_resampler[0]);        free(dst);        return NULL;    }    dst->time_lost = src->time_lost;     // dst->output = src->output;     return dst;} static void dup_channel(IT_CHANNEL *dst, IT_CHANNEL *src) {    dst->flags = src->flags;     dst->volume = src->volume;    dst->volslide = src->volslide;    dst->xm_volslide = src->xm_volslide;    dst->panslide = src->panslide;     dst->pan = src->pan;    dst->truepan = src->truepan;     dst->channelvolume = src->channelvolume;    dst->channelvolslide = src->channelvolslide;     dst->instrument = src->instrument;    dst->note = src->note;     dst->SFmacro = src->SFmacro;     dst->filter_cutoff = src->filter_cutoff;    dst->filter_resonance = src->filter_resonance;     dst->key_off_count = src->key_off_count;    dst->note_cut_count = src->note_cut_count;    dst->note_delay_count = src->note_delay_count;    dst->note_delay_entry = src->note_delay_entry;     dst->new_note_action = src->new_note_action;     dst->arpeggio_table = src->arpeggio_table;    memcpy(dst->arpeggio_offsets, src->arpeggio_offsets,           sizeof(dst->arpeggio_offsets));    dst->retrig = src->retrig;    dst->xm_retrig = src->xm_retrig;    dst->retrig_tick = src->retrig_tick;     dst->tremor_time = src->tremor_time;     dst->vibrato_waveform = src->vibrato_waveform;    dst->tremolo_waveform = src->tremolo_waveform;    dst->panbrello_waveform = src->panbrello_waveform;     dst->portamento = src->portamento;    dst->toneporta = src->toneporta;    dst->toneslide = src->toneslide;    dst->toneslide_tick = src->toneslide_tick;    dst->last_toneslide_tick = src->last_toneslide_tick;    dst->ptm_toneslide = src->ptm_toneslide;    dst->ptm_last_toneslide = src->ptm_last_toneslide;    dst->okt_toneslide = src->okt_toneslide;    dst->destnote = src->destnote;     dst->glissando = src->glissando;     dst->sample = src->sample;    dst->truenote = src->truenote;     dst->midi_state = src->midi_state;     dst->lastvolslide = src->lastvolslide;    dst->lastDKL = src->lastDKL;    dst->lastEF = src->lastEF;    dst->lastG = src->lastG;    dst->lastHspeed = src->lastHspeed;    dst->lastHdepth = src->lastHdepth;    dst->lastRspeed = src->lastRspeed;    dst->lastRdepth = src->lastRdepth;    dst->lastYspeed = src->lastYspeed;    dst->lastYdepth = src->lastYdepth;    dst->lastI = src->lastI;    dst->lastJ = src->lastJ;    dst->lastN = src->lastN;    dst->lastO = src->lastO;    dst->high_offset = src->high_offset;    dst->lastP = src->lastP;    dst->lastQ = src->lastQ;    dst->lastS = src->lastS;    dst->pat_loop_row = src->pat_loop_row;    dst->pat_loop_count = src->pat_loop_count;    dst->pat_loop_end_row = src->pat_loop_end_row;    dst->lastW = src->lastW;     dst->xm_lastE1 = src->xm_lastE1;    dst->xm_lastE2 = src->xm_lastE2;    dst->xm_lastEA = src->xm_lastEA;    dst->xm_lastEB = src->xm_lastEB;    dst->xm_lastX1 = src->xm_lastX1;    dst->xm_lastX2 = src->xm_lastX2;     dst->inv_loop_delay = src->inv_loop_delay;    dst->inv_loop_speed = src->inv_loop_speed;    dst->inv_loop_offset = src->inv_loop_offset;     dst->playing = dup_playing(src->playing, dst, src); #ifdef BIT_ARRAY_BULLSHIT    dst->played_patjump = bit_array_dup(src->played_patjump);    dst->played_patjump_order = src->played_patjump_order;#endif     // dst->output = src->output;} /* Allocate the new callbacks first, then pass them to this function! * It will free them on failure. */static DUMB_IT_SIGRENDERER *dup_sigrenderer(DUMB_IT_SIGRENDERER *src,                                            int n_channels,                                            IT_CALLBACKS *callbacks) {    DUMB_IT_SIGRENDERER *dst;    int i;     if (!src) {        if (callbacks)            free(callbacks);        return NULL;    }     dst = malloc(sizeof(*dst));    if (!dst) {        if (callbacks)            free(callbacks);        return NULL;    }     dst->sigdata = src->sigdata;     dst->n_channels = n_channels;     dst->resampling_quality = src->resampling_quality;     dst->globalvolume = src->globalvolume;    dst->globalvolslide = src->globalvolslide;     dst->tempo = src->tempo;    dst->temposlide = src->temposlide;     for (i = 0; i < DUMB_IT_N_CHANNELS; i++)        dup_channel(&dst->channel[i], &src->channel[i]);     for (i = 0; i < DUMB_IT_N_NNA_CHANNELS; i++)        dst->playing[i] =            dup_playing(src->playing[i], dst->channel, src->channel);     dst->tick = src->tick;    dst->speed = src->speed;    dst->rowcount = src->rowcount;     dst->order = src->order;    dst->row = src->row;    dst->processorder = src->processorder;    dst->processrow = src->processrow;    dst->breakrow = src->breakrow;     dst->restart_position = src->restart_position;     dst->n_rows = src->n_rows;     dst->entry_start = src->entry_start;    dst->entry = src->entry;    dst->entry_end = src->entry_end;     dst->time_left = src->time_left;    dst->sub_time_left = src->sub_time_left;     dst->ramp_style = src->ramp_style;     dst->click_remover = NULL;     dst->callbacks = callbacks; #ifdef BIT_ARRAY_BULLSHIT    dst->played = bit_array_dup(src->played);     dst->looped = src->looped;    dst->time_played = src->time_played;    dst->row_timekeeper = timekeeping_array_dup(src->row_timekeeper);#endif     dst->gvz_time = src->gvz_time;    dst->gvz_sub_time = src->gvz_sub_time;     // dst->max_output = src->max_output;     return dst;} static const IT_MIDI default_midi = {    /* unsigned char SFmacro[16][16]; */    {{0xF0, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00}},    /* unsigned char SFmacrolen[16]; */    {4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0},    /* unsigned short SFmacroz[16]; */    /* Bitfield; bit 0 set = z in first position */    {0x0008, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,     0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000},    /* unsigned char Zmacro[128][16]; */    {{0xF0, 0xF0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x38, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x48, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x50, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x58, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x68, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0xF0, 0xF0, 0x01, 0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},      {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},      {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,      0x00, 0x00, 0x00, 0x00},     {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,

Lines 1–500 of 6594. Load more