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path: root/modules/chibi/cp_loader_it_samples.cpp
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Diffstat (limited to 'modules/chibi/cp_loader_it_samples.cpp')
-rw-r--r--modules/chibi/cp_loader_it_samples.cpp509
1 files changed, 237 insertions, 272 deletions
diff --git a/modules/chibi/cp_loader_it_samples.cpp b/modules/chibi/cp_loader_it_samples.cpp
index 60db9b7f7..414424f27 100644
--- a/modules/chibi/cp_loader_it_samples.cpp
+++ b/modules/chibi/cp_loader_it_samples.cpp
@@ -31,7 +31,6 @@
struct AuxSampleData {
-
uint32_t fileofs;
uint32_t c5spd;
uint32_t length;
@@ -43,168 +42,159 @@ struct AuxSampleData {
bool stereo;
bool exists;
bool compressed;
-
};
-
enum IT_Sample_Flags {
- IT_SAMPLE_EXISTS=1,
- IT_SAMPLE_16BITS=2,
- IT_SAMPLE_STEREO=4,
- IT_SAMPLE_COMPRESSED=8,
- IT_SAMPLE_LOOPED=16,
- IT_SAMPLE_SUSTAIN_LOOPED=32,
- IT_SAMPLE_LOOP_IS_PINGPONG=64,
- IT_SAMPLE_SUSTAIN_LOOP_IS_PINGPONG=128
+ IT_SAMPLE_EXISTS = 1,
+ IT_SAMPLE_16BITS = 2,
+ IT_SAMPLE_STEREO = 4,
+ IT_SAMPLE_COMPRESSED = 8,
+ IT_SAMPLE_LOOPED = 16,
+ IT_SAMPLE_SUSTAIN_LOOPED = 32,
+ IT_SAMPLE_LOOP_IS_PINGPONG = 64,
+ IT_SAMPLE_SUSTAIN_LOOP_IS_PINGPONG = 128
};
-
CPLoader::Error CPLoader_IT::load_sample(CPSample *p_sample) {
-
AuxSampleData aux_sample_data;
char aux_header[4];
- file->get_byte_array((uint8_t*)aux_header,4);
-
- if ( aux_header[0]!='I' ||
- aux_header[1]!='M' ||
- aux_header[2]!='P' ||
- aux_header[3]!='S') {
-
+ file->get_byte_array((uint8_t *)aux_header, 4);
+
+ if (aux_header[0] != 'I' ||
+ aux_header[1] != 'M' ||
+ aux_header[2] != 'P' ||
+ aux_header[3] != 'S') {
+
//CP_PRINTERR("IT CPLoader CPSample: Failed Identifier");
return FILE_UNRECOGNIZED;
}
-
// Ignore deprecated 8.3 filename
- for (int i=0;i<12;i++) file->get_byte();
-
+ for (int i = 0; i < 12; i++)
+ file->get_byte();
+
file->get_byte(); //ignore zerobyte
-
- p_sample->set_global_volume( file->get_byte() );
-
+
+ p_sample->set_global_volume(file->get_byte());
+
/* SAMPLE FLAGS */
- uint8_t flags=file->get_byte();
- aux_sample_data.loop_enabled=flags&IT_SAMPLE_LOOPED;
- aux_sample_data.pingpong_enabled=flags&IT_SAMPLE_LOOP_IS_PINGPONG;
- aux_sample_data.is16bit=flags&IT_SAMPLE_16BITS;
- aux_sample_data.exists=flags&IT_SAMPLE_EXISTS;
- aux_sample_data.stereo=flags&IT_SAMPLE_STEREO;
- aux_sample_data.compressed=flags&IT_SAMPLE_COMPRESSED;
-
+ uint8_t flags = file->get_byte();
+ aux_sample_data.loop_enabled = flags & IT_SAMPLE_LOOPED;
+ aux_sample_data.pingpong_enabled = flags & IT_SAMPLE_LOOP_IS_PINGPONG;
+ aux_sample_data.is16bit = flags & IT_SAMPLE_16BITS;
+ aux_sample_data.exists = flags & IT_SAMPLE_EXISTS;
+ aux_sample_data.stereo = flags & IT_SAMPLE_STEREO;
+ aux_sample_data.compressed = flags & IT_SAMPLE_COMPRESSED;
+
p_sample->set_default_volume(file->get_byte());
/* SAMPLE NAME */
char aux_name[26];
- file->get_byte_array((uint8_t*)aux_name,26);
+ file->get_byte_array((uint8_t *)aux_name, 26);
p_sample->set_name(aux_name);
-
+
// ??
- uint8_t convert_flag=file->get_byte();
+ uint8_t convert_flag = file->get_byte();
// PAN
- uint8_t pan=file->get_byte();
- p_sample->set_pan( pan&0x7F );
- p_sample->set_pan_enabled( pan & 0x80 );
+ uint8_t pan = file->get_byte();
+ p_sample->set_pan(pan & 0x7F);
+ p_sample->set_pan_enabled(pan & 0x80);
- aux_sample_data.length=file->get_dword();
+ aux_sample_data.length = file->get_dword();
-
- aux_sample_data.loop_begin= file->get_dword();
- aux_sample_data.loop_end= file->get_dword();
- aux_sample_data.c5spd=file->get_dword();
+ aux_sample_data.loop_begin = file->get_dword();
+ aux_sample_data.loop_end = file->get_dword();
+ aux_sample_data.c5spd = file->get_dword();
/*p_sample->data.set_sustain_loop_begin=*/file->get_dword();
/*p_sample->data.sustain_loop_end=*/file->get_dword();
- aux_sample_data.fileofs=file->get_dword();
- p_sample->set_vibrato_speed( file->get_byte() );
- p_sample->set_vibrato_depth( file->get_byte() );
- p_sample->set_vibrato_rate( file->get_byte() );
- switch( file->get_byte() ) {
+ aux_sample_data.fileofs = file->get_dword();
+ p_sample->set_vibrato_speed(file->get_byte());
+ p_sample->set_vibrato_depth(file->get_byte());
+ p_sample->set_vibrato_rate(file->get_byte());
+ switch (file->get_byte()) {
/* Vibrato Wave: 0=sine, 1=rampdown, 2=square, 3=random */
- case 0: p_sample->set_vibrato_type( CPSample::VIBRATO_SINE ); break;
- case 1: p_sample->set_vibrato_type( CPSample::VIBRATO_SAW ); break;
- case 2: p_sample->set_vibrato_type( CPSample::VIBRATO_SQUARE ); break;
- case 3: p_sample->set_vibrato_type( CPSample::VIBRATO_RANDOM ); break;
- default: p_sample->set_vibrato_type( CPSample::VIBRATO_SINE ); break;
+ case 0: p_sample->set_vibrato_type(CPSample::VIBRATO_SINE); break;
+ case 1: p_sample->set_vibrato_type(CPSample::VIBRATO_SAW); break;
+ case 2: p_sample->set_vibrato_type(CPSample::VIBRATO_SQUARE); break;
+ case 3: p_sample->set_vibrato_type(CPSample::VIBRATO_RANDOM); break;
+ default: p_sample->set_vibrato_type(CPSample::VIBRATO_SINE); break;
}
-
+
//printf("Name %s - Flags: fileofs :%i - c5spd %i - len %i 16b %i - data?: %i\n",p_sample->get_name(),aux_sample_data.fileofs,aux_sample_data.c5spd, aux_sample_data.length, aux_sample_data.is16bit,aux_sample_data.exists);
CPSample_ID samp_id;
-
+
if (aux_sample_data.exists) {
- samp_id=load_sample_data(aux_sample_data);
- CPSampleManager::get_singleton()->set_c5_freq(samp_id,aux_sample_data.c5spd);
- CPSampleManager::get_singleton()->set_loop_begin( samp_id,aux_sample_data.loop_begin );
- CPSampleManager::get_singleton()->set_loop_end( samp_id,aux_sample_data.loop_end );
- CPSample_Loop_Type loop_type=aux_sample_data.loop_enabled?( aux_sample_data.pingpong_enabled? CP_LOOP_BIDI: CP_LOOP_FORWARD):CP_LOOP_NONE;
- CPSampleManager::get_singleton()->set_loop_end( samp_id,aux_sample_data.loop_end );
- CPSampleManager::get_singleton()->set_loop_type( samp_id, loop_type);
-
+ samp_id = load_sample_data(aux_sample_data);
+ CPSampleManager::get_singleton()->set_c5_freq(samp_id, aux_sample_data.c5spd);
+ CPSampleManager::get_singleton()->set_loop_begin(samp_id, aux_sample_data.loop_begin);
+ CPSampleManager::get_singleton()->set_loop_end(samp_id, aux_sample_data.loop_end);
+ CPSample_Loop_Type loop_type = aux_sample_data.loop_enabled ? (aux_sample_data.pingpong_enabled ? CP_LOOP_BIDI : CP_LOOP_FORWARD) : CP_LOOP_NONE;
+ CPSampleManager::get_singleton()->set_loop_end(samp_id, aux_sample_data.loop_end);
+ CPSampleManager::get_singleton()->set_loop_type(samp_id, loop_type);
}
-
+
//printf("Loaded id is null?: %i\n",samp_id.is_null());
p_sample->set_sample_data(samp_id);
if (!samp_id.is_null()) {
-
- // printf("Loaded ID: stereo: %i len %i 16bit %i\n",CPSampleManager::get_singleton()->is_stereo(samp_id), CPSampleManager::get_singleton()->get_size( samp_id), CPSampleManager::get_singleton()->is_16bits( samp_id) );
+
+ // printf("Loaded ID: stereo: %i len %i 16bit %i\n",CPSampleManager::get_singleton()->is_stereo(samp_id), CPSampleManager::get_singleton()->get_size( samp_id), CPSampleManager::get_singleton()->is_16bits( samp_id) );
}
-
- CP_ERR_COND_V( file->eof_reached(),FILE_CORRUPTED );
- CP_ERR_COND_V( file->get_error(),FILE_CORRUPTED );
-
- return FILE_OK;
-}
+ CP_ERR_COND_V(file->eof_reached(), FILE_CORRUPTED);
+ CP_ERR_COND_V(file->get_error(), FILE_CORRUPTED);
-CPSample_ID CPLoader_IT::load_sample_data(AuxSampleData& p_sample_data) {
+ return FILE_OK;
+}
+CPSample_ID CPLoader_IT::load_sample_data(AuxSampleData &p_sample_data) {
- int aux_sample_properties = (p_sample_data.is16bit?IT_SAMPLE_16BITS:0)|(p_sample_data.compressed?IT_SAMPLE_COMPRESSED:0)|(p_sample_data.stereo?IT_SAMPLE_STEREO:0);
+ int aux_sample_properties = (p_sample_data.is16bit ? IT_SAMPLE_16BITS : 0) | (p_sample_data.compressed ? IT_SAMPLE_COMPRESSED : 0) | (p_sample_data.stereo ? IT_SAMPLE_STEREO : 0);
file->seek(p_sample_data.fileofs);
-
- CPSampleManager *sm=CPSampleManager::get_singleton();
+
+ CPSampleManager *sm = CPSampleManager::get_singleton();
CPSample_ID id;
-
+
switch (aux_sample_properties) {
- case (0): // 8 bits, mono
- case (IT_SAMPLE_16BITS): // 16 bits mono
- case (IT_SAMPLE_STEREO): // 8 bits stereo
- case (IT_SAMPLE_16BITS|IT_SAMPLE_STEREO): { // 16 bits mono
+ case (0): // 8 bits, mono
+ case (IT_SAMPLE_16BITS): // 16 bits mono
+ case (IT_SAMPLE_STEREO): // 8 bits stereo
+ case (IT_SAMPLE_16BITS | IT_SAMPLE_STEREO): { // 16 bits mono
- id=sm->create(p_sample_data.is16bit,p_sample_data.stereo,p_sample_data.length);
+ id = sm->create(p_sample_data.is16bit, p_sample_data.stereo, p_sample_data.length);
if (id.is_null())
break;
sm->lock_data(id);
- int16_t *ptr16 = (int16_t*)sm->get_data(id);
- int8_t *ptr8=(int8_t*)ptr16;
+ int16_t *ptr16 = (int16_t *)sm->get_data(id);
+ int8_t *ptr8 = (int8_t *)ptr16;
- int chans=p_sample_data.stereo?2:1;
+ int chans = p_sample_data.stereo ? 2 : 1;
if (p_sample_data.is16bit) {
- for (int c=0;c<chans;c++) {
+ for (int c = 0; c < chans; c++) {
- for (int i=0;i<p_sample_data.length;i++) {
+ for (int i = 0; i < p_sample_data.length; i++) {
- ptr16[i*chans+c]=file->get_word();
+ ptr16[i * chans + c] = file->get_word();
}
}
} else {
- for (int c=0;c<chans;c++) {
+ for (int c = 0; c < chans; c++) {
- for (int i=0;i<p_sample_data.length;i++) {
+ for (int i = 0; i < p_sample_data.length; i++) {
- ptr8[i*chans+c]=file->get_byte();
+ ptr8[i * chans + c] = file->get_byte();
}
}
-
}
sm->unlock_data(id);
@@ -212,33 +202,30 @@ CPSample_ID CPLoader_IT::load_sample_data(AuxSampleData& p_sample_data) {
} break;
case (IT_SAMPLE_COMPRESSED): { // 8 bits compressed
-
- id=sm->create(false,false,p_sample_data.length);
+ id = sm->create(false, false, p_sample_data.length);
if (id.is_null())
break;
sm->lock_data(id);
-
- if ( load_sample_8bits_IT_compressed((void*)sm->get_data( id),p_sample_data.length) ) {
+
+ if (load_sample_8bits_IT_compressed((void *)sm->get_data(id), p_sample_data.length)) {
sm->unlock_data(id);
sm->destroy(id);
-
+
break;
}
sm->unlock_data(id);
-
} break;
- case (IT_SAMPLE_16BITS|IT_SAMPLE_COMPRESSED): { // 16 bits compressed
-
+ case (IT_SAMPLE_16BITS | IT_SAMPLE_COMPRESSED): { // 16 bits compressed
- id=sm->create(true,false,p_sample_data.length);
+ id = sm->create(true, false, p_sample_data.length);
if (id.is_null())
break;
sm->lock_data(id);
-
- if ( load_sample_16bits_IT_compressed((void*)sm->get_data(id),p_sample_data.length) ) {
+
+ if (load_sample_16bits_IT_compressed((void *)sm->get_data(id), p_sample_data.length)) {
sm->unlock_data(id);
sm->destroy(id);
@@ -249,31 +236,26 @@ CPSample_ID CPLoader_IT::load_sample_data(AuxSampleData& p_sample_data) {
} break;
default: {
-
+
// I dont know how to handle stereo compressed, does that exist?
} break;
-
}
-
return id;
}
-
CPLoader::Error CPLoader_IT::load_samples() {
- for (int i=0;i<header.smpnum;i++) {
+ for (int i = 0; i < header.smpnum; i++) {
- //seek to sample
- file->seek(0xC0+header.ordnum+header.insnum*4+i*4);
-
- uint32_t final_location=file->get_dword();
- file->seek( final_location );
-
+ //seek to sample
+ file->seek(0xC0 + header.ordnum + header.insnum * 4 + i * 4);
- Error err=load_sample(song->get_sample(i));
- CP_ERR_COND_V(err,err);
+ uint32_t final_location = file->get_dword();
+ file->seek(final_location);
+ Error err = load_sample(song->get_sample(i));
+ CP_ERR_COND_V(err, err);
}
if (file->eof_reached() || file->get_error())
@@ -287,208 +269,200 @@ CPLoader::Error CPLoader_IT::load_samples() {
* NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE * NOTICE */
-uint32_t CPLoader_IT::read_n_bits_from_IT_compressed_block (uint8_t p_bits_to_read) {
+uint32_t CPLoader_IT::read_n_bits_from_IT_compressed_block(uint8_t p_bits_to_read) {
- uint32_t aux_return_value;
- uint32_t val;
+ uint32_t aux_return_value;
+ uint32_t val;
- uint8_t *buffer=(uint8_t*)source_position;
- if ( p_bits_to_read <= source_remaining_bits ) {
+ uint8_t *buffer = (uint8_t *)source_position;
+ if (p_bits_to_read <= source_remaining_bits) {
- val=buffer[3];
- val<<=8;
- val|=buffer[2];
- val<<=8;
- val|=buffer[1];
- val<<=8;
- val|=buffer[0];
+ val = buffer[3];
+ val <<= 8;
+ val |= buffer[2];
+ val <<= 8;
+ val |= buffer[1];
+ val <<= 8;
+ val |= buffer[0];
- aux_return_value = val & ((1 << p_bits_to_read) - 1);
- val >>= p_bits_to_read;
- source_remaining_bits -= p_bits_to_read;
+ aux_return_value = val & ((1 << p_bits_to_read) - 1);
+ val >>= p_bits_to_read;
+ source_remaining_bits -= p_bits_to_read;
- buffer[3]=val>>24;
- buffer[2]=(val>>16)&0xFF;
- buffer[1]=(val>>8)&0xFF;
- buffer[0]=(val)&0xFF;
+ buffer[3] = val >> 24;
+ buffer[2] = (val >> 16) & 0xFF;
+ buffer[1] = (val >> 8) & 0xFF;
+ buffer[0] = (val)&0xFF;
- } else {
- aux_return_value=buffer[3];
- aux_return_value<<=8;
- aux_return_value|=buffer[2];
- aux_return_value<<=8;
- aux_return_value|=buffer[1];
- aux_return_value<<=8;
- aux_return_value|=buffer[0];
+ } else {
+ aux_return_value = buffer[3];
+ aux_return_value <<= 8;
+ aux_return_value |= buffer[2];
+ aux_return_value <<= 8;
+ aux_return_value |= buffer[1];
+ aux_return_value <<= 8;
+ aux_return_value |= buffer[0];
- uint32_t nbits = p_bits_to_read - source_remaining_bits;
- source_position++;
+ uint32_t nbits = p_bits_to_read - source_remaining_bits;
+ source_position++;
- buffer+=4;
- val=buffer[3];
- val<<=8;
- val|=buffer[2];
- val<<=8;
- val|=buffer[1];
- val<<=8;
- val|=buffer[0];
- aux_return_value |= ((val & ((1 << nbits) - 1)) << source_remaining_bits);
- val >>= nbits;
- source_remaining_bits = 32 - nbits;
- buffer[3]=val>>24;
- buffer[2]=(val>>16)&0xFF;
- buffer[1]=(val>>8)&0xFF;
- buffer[0]=(val)&0xFF;
-
- }
+ buffer += 4;
+ val = buffer[3];
+ val <<= 8;
+ val |= buffer[2];
+ val <<= 8;
+ val |= buffer[1];
+ val <<= 8;
+ val |= buffer[0];
+ aux_return_value |= ((val & ((1 << nbits) - 1)) << source_remaining_bits);
+ val >>= nbits;
+ source_remaining_bits = 32 - nbits;
+ buffer[3] = val >> 24;
+ buffer[2] = (val >> 16) & 0xFF;
+ buffer[1] = (val >> 8) & 0xFF;
+ buffer[0] = (val)&0xFF;
+ }
- return aux_return_value;
+ return aux_return_value;
}
-bool CPLoader_IT::read_IT_compressed_block (bool p_16bits) {
+bool CPLoader_IT::read_IT_compressed_block(bool p_16bits) {
uint16_t size;
- size=file->get_word();
+ size = file->get_word();
if (file->eof_reached() || file->get_error()) return true;
- pat_data = (uint8_t*)CP_ALLOC( 4* ((size >> 2) + 2) );
+ pat_data = (uint8_t *)CP_ALLOC(4 * ((size >> 2) + 2));
if (!pat_data)
return true;
-
- source_buffer=(uint32_t*)pat_data;
- file->get_byte_array((uint8_t*)source_buffer,size);
-
+ source_buffer = (uint32_t *)pat_data;
+ file->get_byte_array((uint8_t *)source_buffer, size);
+
if (file->eof_reached() || file->get_error()) {
-
+
free_IT_compressed_block();
return true;
}
-
+
source_position = source_buffer;
source_remaining_bits = 32;
return false;
}
-void CPLoader_IT::free_IT_compressed_block () {
-
+void CPLoader_IT::free_IT_compressed_block() {
if (pat_data) {
CP_FREE(pat_data);
- pat_data=NULL;
+ pat_data = NULL;
}
-
}
-bool CPLoader_IT::load_sample_8bits_IT_compressed(void *p_dest_buffer,int p_buffsize) {
+bool CPLoader_IT::load_sample_8bits_IT_compressed(void *p_dest_buffer, int p_buffsize) {
- int8_t *dest_buffer; /* destination buffer which will be returned */
- uint16_t block_length; /* length of compressed data block in samples */
- uint16_t block_position; /* position in block */
- uint8_t bit_width; /* actual "bit width" */
- uint16_t aux_value; /* value read from file to be processed */
- int8_t d1, d2; /* integrator buffers (d2 for it2.15) */
- int8_t *dest_position; /* position in output buffer */
- int8_t v; /* sample value */
+ int8_t *dest_buffer; /* destination buffer which will be returned */
+ uint16_t block_length; /* length of compressed data block in samples */
+ uint16_t block_position; /* position in block */
+ uint8_t bit_width; /* actual "bit width" */
+ uint16_t aux_value; /* value read from file to be processed */
+ int8_t d1, d2; /* integrator buffers (d2 for it2.15) */
+ int8_t *dest_position; /* position in output buffer */
+ int8_t v; /* sample value */
bool it215; // is this an it215 module?
- dest_buffer = (int8_t *) p_dest_buffer;
+ dest_buffer = (int8_t *)p_dest_buffer;
- if (dest_buffer==NULL)
+ if (dest_buffer == NULL)
return true;
- for (int i=0;i<p_buffsize;i++)
- dest_buffer[i]=0;
-
+ for (int i = 0; i < p_buffsize; i++)
+ dest_buffer[i] = 0;
dest_position = dest_buffer;
- it215=(header.cmwt==0x215);
+ it215 = (header.cmwt == 0x215);
/* now unpack data till the dest buffer is full */
while (p_buffsize) {
- /* read a new block of compressed data and reset variables */
- if ( read_IT_compressed_block(false) ) {
+ /* read a new block of compressed data and reset variables */
+ if (read_IT_compressed_block(false)) {
CP_PRINTERR("Out of memory decompressing IT CPSample");
return true;
}
-
block_length = (p_buffsize < 0x8000) ? p_buffsize : 0x8000;
block_position = 0;
- bit_width = 9; /* start with width of 9 bits */
+ bit_width = 9; /* start with width of 9 bits */
- d1 = d2 = 0; /* reset integrator buffers */
+ d1 = d2 = 0; /* reset integrator buffers */
- /* now uncompress the data block */
- while ( block_position < block_length ) {
+ /* now uncompress the data block */
+ while (block_position < block_length) {
- aux_value = read_n_bits_from_IT_compressed_block(bit_width); /* read bits */
+ aux_value = read_n_bits_from_IT_compressed_block(bit_width); /* read bits */
- if ( bit_width < 7 ) { /* method 1 (1-6 bits) */
+ if (bit_width < 7) { /* method 1 (1-6 bits) */
- if ( aux_value == (1 << (bit_width - 1)) ) { /* check for "100..." */
+ if (aux_value == (1 << (bit_width - 1))) { /* check for "100..." */
aux_value = read_n_bits_from_IT_compressed_block(3) + 1; /* yes -> read new width; */
- bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
- /* and expand it */
- continue; /* ... next value */
+ bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
+ /* and expand it */
+ continue; /* ... next value */
}
- } else if ( bit_width < 9 ) { /* method 2 (7-8 bits) */
+ } else if (bit_width < 9) { /* method 2 (7-8 bits) */
uint8_t border = (0xFF >> (9 - bit_width)) - 4;
- /* lower border for width chg */
+ /* lower border for width chg */
- if ( aux_value > border && aux_value <= (border + 8) ) {
+ if (aux_value > border && aux_value <= (border + 8)) {
aux_value -= border; /* convert width to 1-8 */
bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
- /* and expand it */
- continue; /* ... next value */
+ /* and expand it */
+ continue; /* ... next value */
}
+ } else if (bit_width == 9) { /* method 3 (9 bits) */
- } else if ( bit_width == 9 ) { /* method 3 (9 bits) */
+ if (aux_value & 0x100) { /* bit 8 set? */
- if ( aux_value & 0x100 ) { /* bit 8 set? */
-
- bit_width = (aux_value + 1) & 0xff; /* new width... */
- continue; /* ... and next value */
+ bit_width = (aux_value + 1) & 0xff; /* new width... */
+ continue; /* ... and next value */
}
} else { /* illegal width, abort */
-
free_IT_compressed_block();
CP_PRINTERR("CPSample has illegal BitWidth ");
return true;
}
/* now expand value to signed byte */
- if ( bit_width < 8 ) {
+ if (bit_width < 8) {
uint8_t tmp_shift = 8 - bit_width;
- v=(aux_value << tmp_shift);
- v>>=tmp_shift;
+ v = (aux_value << tmp_shift);
+ v >>= tmp_shift;
- } else v = (int8_t) aux_value;
+ } else
+ v = (int8_t)aux_value;
/* integrate upon the sample values */
d1 += v;
- d2 += d1;
+ d2 += d1;
/* ... and store it into the buffer */
*(dest_position++) = it215 ? d2 : d1;
block_position++;
-
}
/* now subtract block lenght from total length and go on */
@@ -496,85 +470,81 @@ bool CPLoader_IT::load_sample_8bits_IT_compressed(void *p_dest_buffer,int p_buff
p_buffsize -= block_length;
}
-
return false;
}
-bool CPLoader_IT::load_sample_16bits_IT_compressed(void *p_dest_buffer,int p_buffsize) {
+bool CPLoader_IT::load_sample_16bits_IT_compressed(void *p_dest_buffer, int p_buffsize) {
- int16_t *dest_buffer; /* destination buffer which will be returned */
- uint16_t block_length; /* length of compressed data block in samples */
- uint16_t block_position; /* position in block */
- uint8_t bit_width; /* actual "bit width" */
- uint32_t aux_value; /* value read from file to be processed */
- int16_t d1, d2; /* integrator buffers (d2 for it2.15) */
- int16_t *dest_position; /* position in output buffer */
- int16_t v; /* sample value */
+ int16_t *dest_buffer; /* destination buffer which will be returned */
+ uint16_t block_length; /* length of compressed data block in samples */
+ uint16_t block_position; /* position in block */
+ uint8_t bit_width; /* actual "bit width" */
+ uint32_t aux_value; /* value read from file to be processed */
+ int16_t d1, d2; /* integrator buffers (d2 for it2.15) */
+ int16_t *dest_position; /* position in output buffer */
+ int16_t v; /* sample value */
bool it215; // is this an it215 module?
- dest_buffer = (int16_t *) p_dest_buffer;
+ dest_buffer = (int16_t *)p_dest_buffer;
- if (dest_buffer==NULL)
+ if (dest_buffer == NULL)
return true;
- for (int i=0;i<p_buffsize;i++)
- dest_buffer[i]=0;
+ for (int i = 0; i < p_buffsize; i++)
+ dest_buffer[i] = 0;
dest_position = dest_buffer;
- it215=(header.cmwt==0x215);
-
+ it215 = (header.cmwt == 0x215);
while (p_buffsize) {
- /* read a new block of compressed data and reset variables */
- if ( read_IT_compressed_block(true) ) {
+ /* read a new block of compressed data and reset variables */
+ if (read_IT_compressed_block(true)) {
return true;
}
-
block_length = (p_buffsize < 0x4000) ? p_buffsize : 0x4000;
block_position = 0;
- bit_width = 17; /* start with width of 9 bits */
+ bit_width = 17; /* start with width of 9 bits */
- d1 = d2 = 0; /* reset integrator buffers */
+ d1 = d2 = 0; /* reset integrator buffers */
- while ( block_position < block_length ) {
+ while (block_position < block_length) {
- aux_value = read_n_bits_from_IT_compressed_block(bit_width); /* read bits */
+ aux_value = read_n_bits_from_IT_compressed_block(bit_width); /* read bits */
- if ( bit_width < 7 ) { /* method 1 (1-6 bits) */
+ if (bit_width < 7) { /* method 1 (1-6 bits) */
- if ( (signed)aux_value == (1 << (bit_width - 1)) ) { /* check for "100..." */
+ if ((signed)aux_value == (1 << (bit_width - 1))) { /* check for "100..." */
aux_value = read_n_bits_from_IT_compressed_block(4) + 1; /* yes -> read new width; */
- bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
- /* and expand it */
- continue; /* ... next value */
+ bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
+ /* and expand it */
+ continue; /* ... next value */
}
- } else if ( bit_width < 17 ) {
+ } else if (bit_width < 17) {
uint16_t border = (0xFFFF >> (17 - bit_width)) - 8;
- if ( (int)aux_value > (int)border && (int)aux_value <= ((int)border + 16) ) {
+ if ((int)aux_value > (int)border && (int)aux_value <= ((int)border + 16)) {
aux_value -= border; /* convert width to 1-8 */
bit_width = (aux_value < bit_width) ? aux_value : aux_value + 1;
- /* and expand it */
- continue; /* ... next value */
+ /* and expand it */
+ continue; /* ... next value */
}
+ } else if (bit_width == 17) {
- } else if ( bit_width == 17 ) {
-
- if ( aux_value & 0x10000 ) { /* bit 8 set? */
+ if (aux_value & 0x10000) { /* bit 8 set? */
- bit_width = (aux_value + 1) & 0xff; /* new width... */
- continue; /* ... and next value */
+ bit_width = (aux_value + 1) & 0xff; /* new width... */
+ continue; /* ... and next value */
}
} else { /* illegal width, abort */
@@ -582,28 +552,28 @@ bool CPLoader_IT::load_sample_16bits_IT_compressed(void *p_dest_buffer,int p_buf
CP_PRINTERR("CPSample has illegal BitWidth ");
free_IT_compressed_block();
-
+
return true;
}
/* now expand value to signed byte */
- if ( bit_width < 16 ) {
+ if (bit_width < 16) {
uint8_t tmp_shift = 16 - bit_width;
- v=(aux_value << tmp_shift);
- v>>=tmp_shift;
+ v = (aux_value << tmp_shift);
+ v >>= tmp_shift;
- } else v = (int16_t) aux_value;
+ } else
+ v = (int16_t)aux_value;
/* integrate upon the sample values */
d1 += v;
- d2 += d1;
+ d2 += d1;
/* ... and store it into the buffer */
*(dest_position++) = it215 ? d2 : d1;
block_position++;
-
}
/* now subtract block lenght from total length and go on */
@@ -611,10 +581,5 @@ bool CPLoader_IT::load_sample_16bits_IT_compressed(void *p_dest_buffer,int p_buf
p_buffsize -= block_length;
}
-
return false;
-
}
-
-
-
generated by cgit v1.2.3-70-g09d2 (git 2.52.0) at 2026-01-01 14:19:30 +0000