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vgmstream/src/meta/txtp.c

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#include "meta.h"
#include "../coding/coding.h"
#include "../layout/layout.h"
#include "../mixing.h"
#define TXTP_LINE_MAX 1024
#define TXTP_MIXING_MAX 128
#define TXTP_GROUP_MODE_SEGMENTED 'S'
#define TXTP_GROUP_MODE_LAYERED 'L'
#define TXTP_GROUP_REPEAT 'R'
/* mixing info */
typedef enum {
MIX_SWAP,
MIX_ADD,
MIX_ADD_VOLUME,
MIX_VOLUME,
MIX_LIMIT,
MIX_DOWNMIX,
MIX_KILLMIX,
MIX_UPMIX,
MIX_FADE,
MACRO_VOLUME,
MACRO_TRACK,
MACRO_LAYER,
MACRO_CROSSTRACK,
MACRO_CROSSLAYER,
} txtp_mix_t;
typedef struct {
txtp_mix_t command;
/* common */
int ch_dst;
int ch_src;
double vol;
/* fade envelope */
double vol_start;
double vol_end;
char shape;
int32_t sample_pre;
int32_t sample_start;
int32_t sample_end;
int32_t sample_post;
double time_pre;
double time_start;
double time_end;
double time_post;
/* macros */
int max;
uint32_t mask;
char mode;
} txtp_mix_data;
typedef struct {
char filename[TXTP_LINE_MAX];
int range_start;
int range_end;
int subsong;
uint32_t channel_mask;
int mixing_count;
txtp_mix_data mixing[TXTP_MIXING_MAX];
double config_loop_count;
double config_fade_time;
double config_fade_delay;
int config_ignore_loop;
int config_force_loop;
int config_ignore_fade;
int sample_rate;
int loop_install;
int loop_end_max;
double loop_start_second;
int32_t loop_start_sample;
double loop_end_second;
int32_t loop_end_sample;
} txtp_entry;
typedef struct {
int position;
char type;
int count;
char repeat;
txtp_entry group_config;
} txtp_group;
typedef struct {
txtp_entry *entry;
size_t entry_count;
size_t entry_max;
txtp_group *group;
size_t group_count;
size_t group_max;
VGMSTREAM* *vgmstream;
size_t vgmstream_count;
uint32_t loop_start_segment;
uint32_t loop_end_segment;
int is_loop_keep;
txtp_entry default_entry;
int default_entry_set;
int is_segmented;
int is_layered;
int is_single;
} txtp_header;
static txtp_header* parse_txtp(STREAMFILE* streamFile);
static void clean_txtp(txtp_header* txtp, int fail);
static void apply_config(VGMSTREAM *vgmstream, txtp_entry *current);
void add_mixing(txtp_entry* cfg, txtp_mix_data* mix, txtp_mix_t command);
static int make_group_segment(txtp_header* txtp, int from, int count);
static int make_group_layer(txtp_header* txtp, int from, int count);
/* TXTP - an artificial playlist-like format to play files with segments/layers/config */
VGMSTREAM * init_vgmstream_txtp(STREAMFILE *streamFile) {
VGMSTREAM *vgmstream = NULL;
txtp_header* txtp = NULL;
int i;
/* checks */
if (!check_extensions(streamFile, "txtp"))
goto fail;
/* read .txtp with all files and config */
txtp = parse_txtp(streamFile);
if (!txtp) goto fail;
/* post-process */
{
if (txtp->entry_count == 0)
goto fail;
txtp->vgmstream = calloc(txtp->entry_count, sizeof(VGMSTREAM*));
if (!txtp->vgmstream) goto fail;
txtp->vgmstream_count = txtp->entry_count;
}
/* detect single files before grouping */
if (txtp->group_count == 0 && txtp->vgmstream_count == 1) {
txtp->is_single = 1;
txtp->is_segmented = 0;
txtp->is_layered = 0;
}
/* open all entry files first as they'll be modified by modes */
for (i = 0; i < txtp->vgmstream_count; i++) {
STREAMFILE* temp_streamFile = open_streamfile_by_filename(streamFile, txtp->entry[i].filename);
if (!temp_streamFile) {
VGM_LOG("TXTP: cannot open streamfile for %s\n", txtp->entry[i].filename);
goto fail;
}
temp_streamFile->stream_index = txtp->entry[i].subsong;
txtp->vgmstream[i] = init_vgmstream_from_STREAMFILE(temp_streamFile);
close_streamfile(temp_streamFile);
if (!txtp->vgmstream[i]) {
VGM_LOG("TXTP: cannot open vgmstream for %s\n", txtp->entry[i].filename);
goto fail;
}
apply_config(txtp->vgmstream[i], &txtp->entry[i]);
}
/* group files as needed */
for (i = 0; i < txtp->group_count; i++) {
txtp_group *grp = &txtp->group[i];
int pos, groups;
//;VGM_LOG("TXTP: apply group %i%c%i%c\n",txtp->group[i].position,txtp->group[i].type,txtp->group[i].count,txtp->group[i].repeat);
/* special meaning of "all files" */
if (grp->position < 0 || grp->position >= txtp->vgmstream_count)
grp->position = 0;
if (grp->count <= 0)
grp->count = txtp->vgmstream_count - grp->position;
/* repeats N groups (trailing files are not grouped) */
if (grp->repeat == TXTP_GROUP_REPEAT) {
groups = ((txtp->vgmstream_count - grp->position) / grp->count);
}
else {
groups = 1;
}
/* as groups are compacted position goes 1 by 1 */
for (pos = grp->position; pos < grp->position + groups; pos++) {
//;VGM_LOG("TXTP: group=%i, count=%i, groups=%i\n", pos, grp->count, groups);
switch(grp->type) {
case TXTP_GROUP_MODE_LAYERED:
if (!make_group_layer(txtp, pos, grp->count))
goto fail;
break;
case TXTP_GROUP_MODE_SEGMENTED:
if (!make_group_segment(txtp, pos, grp->count))
goto fail;
break;
default:
goto fail;
}
}
/* group may also have config (like downmixing) */
apply_config(txtp->vgmstream[grp->position], &grp->group_config);
}
/* final tweaks (should be integrated with the above?) */
if (txtp->is_layered) {
if (!make_group_layer(txtp, 0, txtp->vgmstream_count))
goto fail;
}
if (txtp->is_segmented) {
if (!make_group_segment(txtp, 0, txtp->vgmstream_count))
goto fail;
}
if (txtp->is_single) {
/* special case of setting start_segment to force/overwrite looping
* (better to use #E but left for compatibility with older TXTPs) */
if (txtp->loop_start_segment == 1 && !txtp->loop_end_segment) {
vgmstream_force_loop(txtp->vgmstream[0], 1, txtp->vgmstream[0]->loop_start_sample, txtp->vgmstream[0]->num_samples);
}
}
/* may happen if using mixed mode but some files weren't grouped */
if (txtp->vgmstream_count != 1) {
VGM_LOG("TXTP: wrong final vgmstream count %i\n", txtp->vgmstream_count);
goto fail;
}
/* apply default config to the resulting file */
if (txtp->default_entry_set) {
apply_config(txtp->vgmstream[0], &txtp->default_entry);
}
vgmstream = txtp->vgmstream[0];
clean_txtp(txtp, 0);
return vgmstream;
fail:
clean_txtp(txtp, 1);
return NULL;
}
static void update_vgmstream_list(VGMSTREAM* vgmstream, txtp_header* txtp, int position, int count) {
int i;
//;VGM_LOG("TXTP: compact position=%i count=%i, vgmstreams=%i\n", position, count, txtp->vgmstream_count);
/* sets and compacts vgmstream list pulling back all following entries */
txtp->vgmstream[position] = vgmstream;
for (i = position + count; i < txtp->vgmstream_count; i++) {
//;VGM_LOG("TXTP: copy %i to %i\n", i, i + 1 - count);
txtp->vgmstream[i + 1 - count] = txtp->vgmstream[i];
}
/* list can only become smaller, no need to alloc/free/etc */
txtp->vgmstream_count = txtp->vgmstream_count + 1 - count;
//;VGM_LOG("TXTP: compact vgmstreams=%i\n", txtp->vgmstream_count);
}
static int make_group_segment(txtp_header* txtp, int position, int count) {
VGMSTREAM * vgmstream = NULL;
segmented_layout_data *data_s = NULL;
int i, loop_flag = 0;
if (count == 1) { /* nothing to do */
//;VGM_LOG("TXTP: ignored segments of 1\n");
return 1;
}
if (position + count > txtp->vgmstream_count || position < 0 || count < 0) {
VGM_LOG("TXTP: ignored segment position=%i, count=%i, entries=%i\n", position, count, txtp->vgmstream_count);
return 1;
}
/* loop settings only make sense if this group becomes final vgmstream */
if (position == 0 && txtp->vgmstream_count == count) {
if (txtp->loop_start_segment && !txtp->loop_end_segment)
txtp->loop_end_segment = count;
loop_flag = (txtp->loop_start_segment > 0 && txtp->loop_start_segment <= count);
}
/* init layout */
data_s = init_layout_segmented(count);
if (!data_s) goto fail;
/* copy each subfile */
for (i = 0; i < count; i++) {
data_s->segments[i] = txtp->vgmstream[i + position];
txtp->vgmstream[i + position] = NULL; /* will be freed by layout */
}
/* setup VGMSTREAMs */
if (!setup_layout_segmented(data_s))
goto fail;
/* build the layout VGMSTREAM */
vgmstream = allocate_segmented_vgmstream(data_s,loop_flag, txtp->loop_start_segment - 1, txtp->loop_end_segment - 1);
if (!vgmstream) goto fail;
/* custom meta name if all parts don't match */
for (i = 0; i < data_s->segment_count; i++) {
if (vgmstream->meta_type != data_s->segments[i]->meta_type) {
vgmstream->meta_type = meta_TXTP;
break;
}
}
/* fix loop keep */
if (loop_flag && txtp->is_loop_keep) {
int32_t current_samples = 0;
for (i = 0; i < data_s->segment_count; i++) {
if (txtp->loop_start_segment == i+1 /*&& data_s->segments[i]->loop_start_sample*/) {
vgmstream->loop_start_sample = current_samples + data_s->segments[i]->loop_start_sample;
}
current_samples += data_s->segments[i]->num_samples;
if (txtp->loop_end_segment == i+1 && data_s->segments[i]->loop_end_sample) {
vgmstream->loop_end_sample = current_samples - data_s->segments[i]->num_samples + data_s->segments[i]->loop_end_sample;
}
}
}
/* set new vgmstream and reorder positions */
update_vgmstream_list(vgmstream, txtp, position, count);
return 1;
fail:
close_vgmstream(vgmstream);
if (!vgmstream)
free_layout_segmented(data_s);
return 0;
}
static int make_group_layer(txtp_header* txtp, int position, int count) {
VGMSTREAM * vgmstream = NULL;
layered_layout_data * data_l = NULL;
int i;
if (count == 1) { /* nothing to do */
//;VGM_LOG("TXTP: ignored layer of 1\n");
return 1;
}
if (position + count > txtp->vgmstream_count || position < 0 || count < 0) {
VGM_LOG("TXTP: ignored layer position=%i, count=%i, entries=%i\n", position, count, txtp->vgmstream_count);
return 1;
}
/* init layout */
data_l = init_layout_layered(count);
if (!data_l) goto fail;
/* copy each subfile */
for (i = 0; i < count; i++) {
data_l->layers[i] = txtp->vgmstream[i + position];
txtp->vgmstream[i + position] = NULL; /* will be freed by layout */
}
/* setup VGMSTREAMs */
if (!setup_layout_layered(data_l))
goto fail;
/* build the layout VGMSTREAM */
vgmstream = allocate_layered_vgmstream(data_l);
if (!vgmstream) goto fail;
/* custom meta name if all parts don't match */
for (i = 0; i < count; i++) {
if (vgmstream->meta_type != data_l->layers[i]->meta_type) {
vgmstream->meta_type = meta_TXTP;
break;
}
}
/* set new vgmstream and reorder positions */
update_vgmstream_list(vgmstream, txtp, position, count);
return 1;
fail:
close_vgmstream(vgmstream);
if (!vgmstream)
free_layout_layered(data_l);
return 0;
}
static void apply_config(VGMSTREAM *vgmstream, txtp_entry *current) {
vgmstream->config_loop_count = current->config_loop_count;
vgmstream->config_fade_time = current->config_fade_time;
vgmstream->config_fade_delay = current->config_fade_delay;
vgmstream->config_ignore_loop = current->config_ignore_loop;
vgmstream->config_force_loop = current->config_force_loop;
vgmstream->config_ignore_fade = current->config_ignore_fade;
if (current->sample_rate > 0) {
vgmstream->sample_rate = current->sample_rate;
}
if (current->loop_install) {
if (current->loop_start_second > 0 || current->loop_end_second > 0) {
current->loop_start_sample = current->loop_start_second * vgmstream->sample_rate;
current->loop_end_sample = current->loop_end_second * vgmstream->sample_rate;
if (current->loop_end_sample > vgmstream->num_samples &&
current->loop_end_sample - vgmstream->num_samples <= 0.1 * vgmstream->sample_rate)
current->loop_end_sample = vgmstream->num_samples; /* allow some rounding leeway */
}
if (current->loop_end_max) {
current->loop_end_sample = vgmstream->num_samples;
}
vgmstream_force_loop(vgmstream, current->loop_install, current->loop_start_sample, current->loop_end_sample);
}
/* add macro to mixing list */
if (current->channel_mask) {
int ch;
for (ch = 0; ch < vgmstream->channels; ch++) {
if (!((current->channel_mask >> ch) & 1)) {
txtp_mix_data mix = {0};
mix.ch_dst = ch + 1;
mix.vol = 0.0f;
add_mixing(current, &mix, MIX_VOLUME);
}
}
}
/* copy mixing list (should be done last as some mixes depend on config) */
if (current->mixing_count > 0) {
int m;
for (m = 0; m < current->mixing_count; m++) {
txtp_mix_data mix = current->mixing[m];
switch(mix.command) {
/* base mixes */
case MIX_SWAP: mixing_push_swap(vgmstream, mix.ch_dst, mix.ch_src); break;
case MIX_ADD: mixing_push_add(vgmstream, mix.ch_dst, mix.ch_src, 1.0); break;
case MIX_ADD_VOLUME: mixing_push_add(vgmstream, mix.ch_dst, mix.ch_src, mix.vol); break;
case MIX_VOLUME: mixing_push_volume(vgmstream, mix.ch_dst, mix.vol); break;
case MIX_LIMIT: mixing_push_limit(vgmstream, mix.ch_dst, mix.vol); break;
case MIX_UPMIX: mixing_push_upmix(vgmstream, mix.ch_dst); break;
case MIX_DOWNMIX: mixing_push_downmix(vgmstream, mix.ch_dst); break;
case MIX_KILLMIX: mixing_push_killmix(vgmstream, mix.ch_dst); break;
case MIX_FADE:
/* Convert from time to samples now that sample rate is final.
* Samples and time values may be mixed though, so it's done for every
* value (if one is 0 the other will be too, though) */
if (mix.time_pre > 0.0) mix.sample_pre = mix.time_pre * vgmstream->sample_rate;
if (mix.time_start > 0.0) mix.sample_start = mix.time_start * vgmstream->sample_rate;
if (mix.time_end > 0.0) mix.sample_end = mix.time_end * vgmstream->sample_rate;
if (mix.time_post > 0.0) mix.sample_post = mix.time_post * vgmstream->sample_rate;
/* convert special meaning too */
if (mix.time_pre < 0.0) mix.sample_pre = -1;
if (mix.time_post < 0.0) mix.sample_post = -1;
mixing_push_fade(vgmstream, mix.ch_dst, mix.vol_start, mix.vol_end, mix.shape,
mix.sample_pre, mix.sample_start, mix.sample_end, mix.sample_post);
break;
/* macro mixes */
case MACRO_VOLUME: mixing_macro_volume(vgmstream, mix.vol, mix.mask); break;
case MACRO_TRACK: mixing_macro_track(vgmstream, mix.mask); break;
case MACRO_LAYER: mixing_macro_layer(vgmstream, mix.max, mix.mask, mix.mode); break;
case MACRO_CROSSTRACK: mixing_macro_crosstrack(vgmstream, mix.max); break;
case MACRO_CROSSLAYER: mixing_macro_crosslayer(vgmstream, mix.max, mix.mode); break;
default:
break;
}
}
}
}
/* ********************************** */
static void clean_filename(char * filename) {
int i;
size_t len;
if (filename[0] == '\0')
return;
/* normalize paths */
fix_dir_separators(filename);
/* remove trailing spaces */
len = strlen(filename);
for (i = len-1; i > 0; i--) {
if (filename[i] != ' ')
break;
filename[i] = '\0';
}
}
/* sscanf 101: "matches = sscanf(string-from, string-commands, parameters...)"
* - reads linearly and matches "%" commands to input parameters as found
* - reads until string end (NULL) or not being able to match current parameter
* - returns number of matched % parameters until stop, or -1 if no matches and reached string end
* - must supply pointer param for every "%" in the string
* - %d/f: match number until end or *non-number* (so "%d" reads "5t" as "5")
* - %s: reads string (dangerous due to overflows and surprising as %s%d can't match numbers since string eats all chars)
* - %[^(chars)] match string with chars not in the list (stop reading at those chars)
* - %*(command) read but don't match (no need to supply parameterr)
* - " ": ignore all spaces until next non-space
* - other chars in string must exist: ("%dt t%dt" reads "5t t5t" as "5" and "5", while "t5t 5t" matches only first "5")
* - %n: special match (not counted in return value), chars consumed until that point (can appear and be set multiple times)
*/
static int get_double(const char * config, double *value) {
int n, m;
double temp;
m = sscanf(config, " %lf%n", &temp,&n);
if (m != 1 || temp < 0)
return 0;
*value = temp;
return n;
}
static int get_int(const char * config, int *value) {
int n,m;
int temp;
m = sscanf(config, " %i%n", &temp,&n);
if (m != 1 || temp < 0)
return 0;
*value = temp;
return n;
}
static int get_time(const char * config, double *value_f, int32_t *value_i) {
int n,m;
int temp_i1, temp_i2;
double temp_f1, temp_f2;
char temp_c;
/* test if format is hour: N:N(.n) or N_N(.n) */
m = sscanf(config, " %i%c%i%n", &temp_i1,&temp_c,&temp_i2,&n);
if (m == 3 && (temp_c == ':' || temp_c == '_')) {
m = sscanf(config, " %lf%c%lf%n", &temp_f1,&temp_c,&temp_f2,&n);
if (m != 3 || temp_f1 < 0.0 || temp_f1 >= 60.0 || temp_f2 < 0.0 || temp_f2 >= 60.0)
return 0;
*value_f = temp_f1 * 60.0 + temp_f2;
return n;
}
/* test if format is seconds: N.n */
m = sscanf(config, " %i.%i%n", &temp_i1,&temp_i2,&n);
if (m == 2) {
m = sscanf(config, " %lf%n", &temp_f1,&n);
if (m != 1 || temp_f1 < 0.0)
return 0;
*value_f = temp_f1;
return n;
}
/* test is format is hex samples: 0xN */
m = sscanf(config, " 0x%x%n", &temp_i1,&n);
if (m == 1) {
/* allow negative samples for special meanings */
//if (temp_i1 < 0)
// return 0;
*value_i = temp_i1;
return n;
}
/* assume format is samples: N */
m = sscanf(config, " %i%n", &temp_i1,&n);
if (m == 1) {
/* allow negative samples for special meanings */
//if (temp_i1 < 0)
// return 0;
*value_i = temp_i1;
return n;
}
return 0;
}
static int get_bool(const char * config, int *value) {
int n,m;
char temp;
n = 0; /* init as it's not matched if c isn't */
m = sscanf(config, " %c%n", &temp, &n);
if (m >= 1 && !(temp == '#' || temp == '\r' || temp == '\n'))
return 0; /* ignore if anything non-space/comment matched */
if (m >= 1 && temp == '#')
n--; /* don't consume separator when returning totals */
*value = 1;
return n;
}
static int get_mask(const char * config, uint32_t *value) {
int n, m, total_n = 0;
int temp1,temp2, r1, r2;
int i;
char cmd;
uint32_t mask = *value;
while (config[0] != '\0') {
m = sscanf(config, " %c%n", &cmd,&n); /* consume comma */
if (m == 1 && (cmd == ',' || cmd == '-')) { /* '-' is alt separator (space is ok too, implicitly) */
config += n;
continue;
}
m = sscanf(config, " %d%n ~ %d%n", &temp1,&n, &temp2,&n);
if (m == 1) { /* single values */
r1 = temp1 - 1;
r2 = temp1 - 1;
}
else if (m == 2) { /* range */
r1 = temp1 - 1;
r2 = temp2 - 1;
}
else { /* no more matches */
break;
}
if (n == 0 || r1 < 0 || r1 > 31 || r2 < 0 || r2 > 31)
break;
for (i = r1; i < r2 + 1; i++) {
mask |= (1 << i);
}
config += n;
total_n += n;
if (config[0]== ',' || config[0]== '-')
config++;
}
*value = mask;
return total_n;
}
static int get_fade(const char * config, txtp_mix_data *mix, int *out_n) {
int n, m, tn = 0;
char type, separator;
m = sscanf(config, " %d %c%n", &mix->ch_dst, &type, &n);
if (n == 0 || m != 2) goto fail;
config += n;
tn += n;
if (type == '^') {
/* full definition */
m = sscanf(config, " %lf ~ %lf = %c @%n", &mix->vol_start, &mix->vol_end, &mix->shape, &n);
if (n == 0 || m != 3) goto fail;
config += n;
tn += n;
n = get_time(config, &mix->time_pre, &mix->sample_pre);
if (n == 0) goto fail;
config += n;
tn += n;
m = sscanf(config, " %c%n", &separator, &n);
if (n == 0 || m != 1 || separator != '~') goto fail;
config += n;
tn += n;
n = get_time(config, &mix->time_start, &mix->sample_start);
if (n == 0) goto fail;
config += n;
tn += n;
m = sscanf(config, " %c%n", &separator, &n);
if (n == 0 || m != 1 || separator != '+') goto fail;
config += n;
tn += n;
n = get_time(config, &mix->time_end, &mix->sample_end);
if (n == 0) goto fail;
config += n;
tn += n;
m = sscanf(config, " %c%n", &separator, &n);
if (n == 0 || m != 1 || separator != '~') goto fail;
config += n;
tn += n;
n = get_time(config, &mix->time_post, &mix->sample_post);
if (n == 0) goto fail;
config += n;
tn += n;
}
else {
/* simplified definition */
if (type == '{' || type == '(') {
mix->vol_start = 0.0;
mix->vol_end = 1.0;
}
else if (type == '}' || type == ')') {
mix->vol_start = 1.0;
mix->vol_end = 0.0;
}
else {
goto fail;
}
mix->shape = type; /* internally converted */
mix->time_pre = -1.0;
mix->sample_pre = -1;
n = get_time(config, &mix->time_start, &mix->sample_start);
if (n == 0) goto fail;
config += n;
tn += n;
m = sscanf(config, " %c%n", &separator, &n);
if (n == 0 || m != 1 || separator != '+') goto fail;
config += n;
tn += n;
n = get_time(config, &mix->time_end, &mix->sample_end);
if (n == 0) goto fail;
config += n;
tn += n;
mix->time_post = -1.0;
mix->sample_post = -1;
}
mix->time_end = mix->time_start + mix->time_end; /* defined as length */
*out_n = tn;
return 1;
fail:
return 0;
}
void add_mixing(txtp_entry* cfg, txtp_mix_data* mix, txtp_mix_t command) {
if (cfg->mixing_count + 1 > TXTP_MIXING_MAX) {
VGM_LOG("TXTP: too many mixes\n");
return;
}
/* parsers reads ch1 = first, but for mixing code ch0 = first
* (if parser reads ch0 here it'll become -1 with special meaning in code) */
mix->ch_dst--;
mix->ch_src--;
mix->command = command;
cfg->mixing[cfg->mixing_count] = *mix; /* memcpy'ed */
cfg->mixing_count++;
}
static void add_config(txtp_entry* current, txtp_entry* cfg, const char* filename) {
if (filename)
strcpy(current->filename, filename);
current->subsong = cfg->subsong;
current->channel_mask = cfg->channel_mask;
//*current = *cfg; /* don't memcopy to allow list additions */ //todo save list first then memcpy
if (cfg->mixing_count > 0) {
int i;
for (i = 0; i < cfg->mixing_count; i++) {
current->mixing[current->mixing_count] = cfg->mixing[i];
current->mixing_count++;
}
}
current->config_loop_count = cfg->config_loop_count;
current->config_fade_time = cfg->config_fade_time;
current->config_fade_delay = cfg->config_fade_delay;
current->config_ignore_loop = cfg->config_ignore_loop;
current->config_force_loop = cfg->config_force_loop;
current->config_ignore_fade = cfg->config_ignore_fade;
current->sample_rate = cfg->sample_rate;
current->loop_install = cfg->loop_install;
current->loop_end_max = cfg->loop_end_max;
current->loop_start_sample = cfg->loop_start_sample;
current->loop_start_second = cfg->loop_start_second;
current->loop_end_sample = cfg->loop_end_sample;
current->loop_end_second = cfg->loop_end_second;
}
static void parse_config(txtp_entry *cfg, char *config) {
/* parse config: #(commands) */
int n, nc, nm, mc;
char command[TXTP_LINE_MAX] = {0};
cfg->range_start = 0;
cfg->range_end = 1;
while (config != NULL) {
/* position in next #(command) */
config = strchr(config, '#');
if (!config) break;
//;VGM_LOG("TXTP: config='%s'\n", config);
/* get command until next space/number/comment/end */
command[0] = '\0';
mc = sscanf(config, "#%n%[^ #0-9\r\n]%n", &nc, command, &nc);
//;VGM_LOG("TXTP: command='%s', nc=%i, mc=%i\n", command, nc, mc);
if (mc <= 0 && nc == 0) break;
config[0] = '\0'; //todo don't modify input string and properly calculate filename end
config += nc; /* skip '#' and command */
/* check command string (though at the moment we only use single letters) */
if (strcmp(command,"c") == 0) {
/* channel mask: file.ext#c1,2 = play channels 1,2 and mutes rest */
config += get_mask(config, &cfg->channel_mask);
//;VGM_LOG("TXTP: channel_mask ");{int i; for (i=0;i<16;i++)VGM_LOG("%i ",(cfg->channel_mask>>i)&1);}VGM_LOG("\n");
}
else if (strcmp(command,"m") == 0) {
/* channel mixing: file.ext#m(sub-command),(sub-command),etc */
char cmd;
while (config[0] != '\0') {
txtp_mix_data mix = {0};
//;VGM_LOG("TXTP: subcommand='%s'\n", config);
//todo use strchr instead?
if (sscanf(config, " %c%n", &cmd, &n) == 1 && n != 0 && cmd == ',') {
config += n;
continue;
}
if (sscanf(config, " %d - %d%n", &mix.ch_dst, &mix.ch_src, &n) == 2 && n != 0) {
//;VGM_LOG("TXTP: mix %i-%i\n", mix.ch_dst, mix.ch_src);
add_mixing(cfg, &mix, MIX_SWAP); /* N-M: swaps M with N */
config += n;
continue;
}
if ((sscanf(config, " %d + %d * %lf%n", &mix.ch_dst, &mix.ch_src, &mix.vol, &n) == 3 && n != 0) ||
(sscanf(config, " %d + %d x %lf%n", &mix.ch_dst, &mix.ch_src, &mix.vol, &n) == 3 && n != 0)) {
//;VGM_LOG("TXTP: mix %i+%i*%f\n", mix.ch_dst, mix.ch_src, mix.vol);
add_mixing(cfg, &mix, MIX_ADD_VOLUME); /* N+M*V: mixes M*volume to N */
config += n;
continue;
}
if (sscanf(config, " %d + %d%n", &mix.ch_dst, &mix.ch_src, &n) == 2 && n != 0) {
//;VGM_LOG("TXTP: mix %i+%i\n", mix.ch_dst, mix.ch_src);
add_mixing(cfg, &mix, MIX_ADD); /* N+M: mixes M to N */
config += n;
continue;
}
if ((sscanf(config, " %d * %lf%n", &mix.ch_dst, &mix.vol, &n) == 2 && n != 0) ||
(sscanf(config, " %d x %lf%n", &mix.ch_dst, &mix.vol, &n) == 2 && n != 0)) {
//;VGM_LOG("TXTP: mix %i*%f\n", mix.ch_dst, mix.vol);
add_mixing(cfg, &mix, MIX_VOLUME); /* N*V: changes volume of N */
config += n;
continue;
}
if ((sscanf(config, " %d = %lf%n", &mix.ch_dst, &mix.vol, &n) == 2 && n != 0)) {
//;VGM_LOG("TXTP: mix %i=%f\n", mix.ch_dst, mix.vol);
add_mixing(cfg, &mix, MIX_LIMIT); /* N=V: limits volume of N */
config += n;
continue;
}
if (sscanf(config, " %d%c%n", &mix.ch_dst, &cmd, &n) == 2 && n != 0 && cmd == 'D') {
//;VGM_LOG("TXTP: mix %iD\n", mix.ch_dst);
add_mixing(cfg, &mix, MIX_KILLMIX); /* ND: downmix N and all following channels */
config += n;
continue;
}
if (sscanf(config, " %d%c%n", &mix.ch_dst, &cmd, &n) == 2 && n != 0 && cmd == 'd') {
//;VGM_LOG("TXTP: mix %id\n", mix.ch_dst);
add_mixing(cfg, &mix, MIX_DOWNMIX);/* Nd: downmix N only */
config += n;
continue;
}
if (sscanf(config, " %d%c%n", &mix.ch_dst, &cmd, &n) == 2 && n != 0 && cmd == 'u') {
//;VGM_LOG("TXTP: mix %iu\n", mix.ch_dst);
add_mixing(cfg, &mix, MIX_UPMIX); /* Nu: upmix N */
config += n;
continue;
}
if (get_fade(config, &mix, &n) != 0) {
//;VGM_LOG("TXTP: fade %d^%f~%f=%c@%f~%f+%f~%f\n",
// mix.ch_dst, mix.vol_start, mix.vol_end, mix.shape,
// mix.time_pre, mix.time_start, mix.time_end, mix.time_post);
add_mixing(cfg, &mix, MIX_FADE); /* N^V1~V2@T1~T2+T3~T4: fades volumes between positions */
config += n;
continue;
}
break; /* unknown mix/new command/end */
}
}
else if (strcmp(command,"s") == 0 || (nc == 1 && config[0] >= '0' && config[0] <= '9')) {
/* subsongs: file.ext#s2 = play subsong 2, file.ext#2~10 = play subsong range */
int subsong_start = 0, subsong_end = 0;
//todo also advance config?
if (sscanf(config, " %d ~ %d", &subsong_start, &subsong_end) == 2) {
if (subsong_start > 0 && subsong_end > 0) {
cfg->range_start = subsong_start-1;
cfg->range_end = subsong_end;
}
//;VGM_LOG("TXTP: subsong range %i~%i\n", range_start, range_end);
}
else if (sscanf(config, " %d", &subsong_start) == 1) {
if (subsong_start > 0) {
cfg->range_start = subsong_start-1;
cfg->range_end = subsong_start;
}
//;VGM_LOG("TXTP: subsong single %i-%i\n", range_start, range_end);
}
else { /* wrong config, ignore */
//;VGM_LOG("TXTP: subsong none\n");
}
}
else if (strcmp(command,"i") == 0) {
config += get_bool(config, &cfg->config_ignore_loop);
//;VGM_LOG("TXTP: ignore_loop=%i\n", cfg->config_ignore_loop);
}
else if (strcmp(command,"E") == 0) {
config += get_bool(config, &cfg->config_force_loop);
//;VGM_LOG("TXTP: force_loop=%i\n", cfg->config_force_loop);
}
else if (strcmp(command,"F") == 0) {
config += get_bool(config, &cfg->config_ignore_fade);
//;VGM_LOG("TXTP: ignore_fade=%i\n", cfg->config_ignore_fade);
}
else if (strcmp(command,"l") == 0) {
config += get_double(config, &cfg->config_loop_count);
//;VGM_LOG("TXTP: loop_count=%f\n", cfg->config_loop_count);
}
else if (strcmp(command,"f") == 0) {
config += get_double(config, &cfg->config_fade_time);
//;VGM_LOG("TXTP: fade_time=%f\n", cfg->config_fade_time);
}
else if (strcmp(command,"d") == 0) {
config += get_double(config, &cfg->config_fade_delay);
//;VGM_LOG("TXTP: fade_delay %f\n", cfg->config_fade_delay);
}
else if (strcmp(command,"h") == 0) {
config += get_int(config, &cfg->sample_rate);
//;VGM_LOG("TXTP: sample_rate %i\n", cfg->sample_rate);
}
else if (strcmp(command,"I") == 0) {
n = get_time(config, &cfg->loop_start_second, &cfg->loop_start_sample);
if (n > 0) { /* first value must exist */
config += n;
n = get_time(config, &cfg->loop_end_second, &cfg->loop_end_sample);
if (n == 0) { /* second value is optional */
cfg->loop_end_max = 1;
}
config += n;
cfg->loop_install = 1;
}
//;VGM_LOG("TXTP: loop_install %i (max=%i): %i %i / %f %f\n", cfg->loop_install, cfg->loop_end_max,
// cfg->loop_start_sample, cfg->loop_end_sample, cfg->loop_start_second, cfg->loop_end_second);
}
//todo cleanup
else if (strcmp(command,"@volume") == 0) {
txtp_mix_data mix = {0};
nm = get_double(config, &mix.vol);
config += nm;
if (nm == 0) continue;
nm = get_mask(config, &mix.mask);
config += nm;
add_mixing(cfg, &mix, MACRO_VOLUME);
}
else if (strcmp(command,"@track") == 0 ||
strcmp(command,"C") == 0 ) {
txtp_mix_data mix = {0};
nm = get_mask(config, &mix.mask);
config += nm;
if (nm == 0) continue;
add_mixing(cfg, &mix, MACRO_TRACK);
}
else if (strcmp(command,"@layer-v") == 0 ||
strcmp(command,"@layer-b") == 0 ||
strcmp(command,"@layer-e") == 0) {
txtp_mix_data mix = {0};
nm = get_int(config, &mix.max);
config += nm;
if (nm == 0) continue;
nm = get_mask(config, &mix.mask);
config += nm;
mix.mode = command[7]; /* pass letter */
add_mixing(cfg, &mix, MACRO_LAYER);
}
else if (strcmp(command,"@crosslayer-v") == 0 ||
strcmp(command,"@crosslayer-b") == 0 ||
strcmp(command,"@crosslayer-e") == 0 ||
strcmp(command,"@crosstrack") == 0) {
txtp_mix_data mix = {0};
txtp_mix_t type;
if (strcmp(command,"@crosstrack") == 0) {
type = MACRO_CROSSTRACK;
}
else {
type = MACRO_CROSSLAYER;
mix.mode = command[12]; /* pass letter */
}
nm = get_int(config, &mix.max);
config += nm;
if (nm == 0) continue;
add_mixing(cfg, &mix, type);
}
else if (config[nc] == ' ') {
//;VGM_LOG("TXTP: comment\n");
break; /* comment, ignore rest */
}
else {
//;VGM_LOG("TXTP: unknown command\n");
/* end, incorrect command, or possibly a comment or double ## comment too
* (shouldn't fail for forward compatibility) */
break;
}
}
}
static int add_group(txtp_header * txtp, char *line) {
int n, m;
txtp_group cfg = {0};
/* parse group: (position)(type)(count)(repeat) #(commands) */
//;VGM_LOG("TXTP: parse group '%s'\n", line);
m = sscanf(line, " %d%n", &cfg.position, &n);
if (m == 1) {
cfg.position--; /* externally 1=first but internally 0=first */
line += n;
}
m = sscanf(line, " %c%n", &cfg.type, &n);
if (m == 1) {
line += n;
}
m = sscanf(line, " %d%n", &cfg.count, &n);
if (m == 1) {
line += n;
}
m = sscanf(line, " %c%n", &cfg.repeat, &n);
if (m == 1 && cfg.repeat == TXTP_GROUP_REPEAT) {
line += n;
}
parse_config(&cfg.group_config, line);
//;VGM_LOG("TXTP: parsed group %i%c%i%c\n",cfg.position+1,cfg.type,cfg.count,cfg.repeat);
/* add final group */
{
/* resize in steps if not enough */
if (txtp->group_count+1 > txtp->group_max) {
txtp_group *temp_group;
txtp->group_max += 5;
temp_group = realloc(txtp->group, sizeof(txtp_group) * txtp->group_max);
if (!temp_group) goto fail;
txtp->group = temp_group;
}
/* new group */
txtp->group[txtp->group_count] = cfg; /* memcpy */
txtp->group_count++;
}
return 1;
fail:
return 0;
}
static int add_entry(txtp_header * txtp, char *filename, int is_default) {
int i;
txtp_entry cfg = {0};
//;VGM_LOG("TXTP: filename=%s\n", filename);
/* parse filename: file.ext#(commands) */
{
char *config;
if (is_default) {
config = filename; /* multiple commands without filename */
}
else {
/* find config start (filenames and config can contain multiple dots and #,
* so this may be fooled by certain patterns of . and #) */
config = strchr(filename, '.'); /* first dot (may be a false positive) */
if (!config) /* extensionless */
config = filename;
config = strchr(config, '#'); /* next should be config */
if (!config) /* no config */
config = NULL;
}
parse_config(&cfg, config);
}
clean_filename(filename);
//;VGM_LOG("TXTP: clean filename='%s'\n", filename);
/* config that applies to all files */
if (is_default) {
txtp->default_entry_set = 1;
add_config(&txtp->default_entry, &cfg, NULL);
return 1;
}
/* add final entry */
for (i = cfg.range_start; i < cfg.range_end; i++){
txtp_entry *current;
/* resize in steps if not enough */
if (txtp->entry_count+1 > txtp->entry_max) {
txtp_entry *temp_entry;
txtp->entry_max += 5;
temp_entry = realloc(txtp->entry, sizeof(txtp_entry) * txtp->entry_max);
if (!temp_entry) goto fail;
txtp->entry = temp_entry;
}
/* new entry */
current = &txtp->entry[txtp->entry_count];
memset(current,0, sizeof(txtp_entry));
cfg.subsong = (i+1);
add_config(current, &cfg, filename);
txtp->entry_count++;
}
return 1;
fail:
return 0;
}
/* ************************************************************************ */
static int is_substring(const char * val, const char * cmp) {
int n;
char subval[TXTP_LINE_MAX] = {0};
/* read string without trailing spaces or comments/commands */
if (sscanf(val, " %s%n[^ #\t\r\n]%n", subval, &n, &n) != 1)
return 0;
if (0 != strcmp(subval,cmp))
return 0;
return n;
}
static int parse_num(const char * val, uint32_t * out_value) {
int hex = (val[0]=='0' && val[1]=='x');
if (sscanf(val, hex ? "%x" : "%u", out_value) != 1)
goto fail;
return 1;
fail:
return 0;
}
static int parse_keyval(txtp_header * txtp, const char * key, const char * val) {
//;VGM_LOG("TXTP: key=val '%s'='%s'\n", key,val);
if (0==strcmp(key,"loop_start_segment")) {
if (!parse_num(val, &txtp->loop_start_segment)) goto fail;
}
else if (0==strcmp(key,"loop_end_segment")) {
if (!parse_num(val, &txtp->loop_end_segment)) goto fail;
}
else if (0==strcmp(key,"mode")) {
if (is_substring(val,"layers")) {
txtp->is_segmented = 0;
txtp->is_layered = 1;
}
else if (is_substring(val,"segments")) {
txtp->is_segmented = 1;
txtp->is_layered = 0;
}
else if (is_substring(val,"mixed")) {
txtp->is_segmented = 0;
txtp->is_layered = 0;
}
else {
goto fail;
}
}
else if (0==strcmp(key,"loop_mode")) {
if (is_substring(val,"keep")) {
txtp->is_loop_keep = 1;
}
else {
goto fail;
}
}
else if (0==strcmp(key,"commands")) {
char val2[TXTP_LINE_MAX];
strcpy(val2, val); /* copy since val is modified here but probably not important */
if (!add_entry(txtp, val2, 1)) goto fail;
}
else if (0==strcmp(key,"group")) {
char val2[TXTP_LINE_MAX];
strcpy(val2, val); /* copy since val is modified here but probably not important */
if (!add_group(txtp, val2)) goto fail;
}
else {
goto fail;
}
return 1;
fail:
VGM_LOG("TXTP: error while parsing key=val '%s'='%s'\n", key,val);
return 0;
}
static txtp_header* parse_txtp(STREAMFILE* streamFile) {
txtp_header* txtp = NULL;
off_t txt_offset = 0x00;
off_t file_size = get_streamfile_size(streamFile);
txtp = calloc(1,sizeof(txtp_header));
if (!txtp) goto fail;
/* defaults */
txtp->is_segmented = 1;
/* empty file: use filename with config (ex. "song.ext#3.txtp") */
if (get_streamfile_size(streamFile) == 0) {
char filename[PATH_LIMIT] = {0};
char* ext;
get_streamfile_filename(streamFile, filename,PATH_LIMIT);
/* remove ".txtp" */
ext = strrchr(filename,'.');
if (!ext) goto fail; /* ??? */
ext[0] = '\0';
if (!add_entry(txtp, filename, 0))
goto fail;
return txtp;
}
/* skip BOM if needed */
if ((uint16_t)read_16bitLE(0x00, streamFile) == 0xFFFE || (uint16_t)read_16bitLE(0x00, streamFile) == 0xFEFF)
txt_offset = 0x02;
/* normal file: read and parse lines */
while (txt_offset < file_size) {
char line[TXTP_LINE_MAX] = {0};
char key[TXTP_LINE_MAX] = {0}, val[TXTP_LINE_MAX] = {0}; /* at least as big as a line to avoid overflows (I hope) */
char filename[TXTP_LINE_MAX] = {0};
int ok, bytes_read, line_done;
bytes_read = get_streamfile_text_line(TXTP_LINE_MAX,line, txt_offset,streamFile, &line_done);
if (!line_done) goto fail;
txt_offset += bytes_read;
/* get key/val (ignores lead/trail spaces, # may be commands or comments) */
ok = sscanf(line, " %[^ \t#=] = %[^\t\r\n] ", key,val);
if (ok == 2) { /* key=val */
if (!parse_keyval(txtp, key, val)) /* read key/val */
goto fail;
continue;
}
/* must be a filename (only remove spaces from start/end, as filenames con contain mid spaces/#/etc) */
ok = sscanf(line, " %[^\t\r\n] ", filename);
if (ok != 1) /* not a filename either */
continue;
if (filename[0] == '#')
continue; /* simple comment */
/* filename with config */
if (!add_entry(txtp, filename, 0))
goto fail;
}
return txtp;
fail:
clean_txtp(txtp, 1);
return NULL;
}
static void clean_txtp(txtp_header* txtp, int fail) {
int i, start;
if (!txtp)
return;
/* returns first vgmstream on success so it's not closed */
start = fail ? 0 : 1;
for (i = start; i < txtp->vgmstream_count; i++) {
close_vgmstream(txtp->vgmstream[i]);
}
free(txtp->vgmstream);
free(txtp->group);
free(txtp->entry);
free(txtp);
}
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