Remove the files

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11719 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 0 insertions, 1181 deletions

diff --git a/apps/codecs/dumb/src/it/itread.c b/apps/codecs/dumb/src/it/itread.c
deleted file mode 100644
index 0e78943..0000000
--- a/apps/codecs/dumb/src/it/itread.c
+++ /dev/null
@@ -1,1181 +0,0 @@
-/*  _______         ____    __         ___    ___
- * \    _  \       \    /  \  /       \   \  /   /       '   '  '
- *  |  | \  \       |  |    ||         |   \/   |         .      .
- *  |  |  |  |      |  |    ||         ||\  /|  |
- *  |  |  |  |      |  |    ||         || \/ |  |         '  '  '
- *  |  |  |  |      |  |    ||         ||    |  |         .      .
- *  |  |_/  /        \  \__//          ||    |  |
- * /_______/ynamic    \____/niversal  /__\  /____\usic   /|  .  . ibliotheque
- *                                                      /  \
- *                                                     / .  \
- * itread.c - Code to read an Impulse Tracker         / / \  \
- *            module from an open file.              | <  /   \_
- *                                                   |  \/ /\   /
- * Based on the loader from an IT player by Bob.      \_  /  > /
- * Adapted for DUMB by entheh.                          | \ / /
- *                                                      |  ' /
- *                                                       \__/
- */
-
-#include <stdlib.h>
-#include <string.h>//might not be necessary later; required for memset
-
-#include "dumb.h"
-#include "internal/it.h"
-
-
-
-#define INVESTIGATE_OLD_INSTRUMENTS
-
-
-
-static int it_seek(DUMBFILE *f, long offset)
-{
-	long pos = dumbfile_pos(f);
-
-	if (pos > offset)
-		return -1;
-
-	if (pos < offset)
-		if (dumbfile_skip(f, offset - pos))
-			return -1;
-
-	return 0;
-}
-
-
-
-typedef unsigned char byte;
-typedef unsigned short word;
-typedef unsigned long dword;
-
-
-
-static unsigned char *sourcebuf = NULL;
-static unsigned char *sourcepos = NULL;
-static unsigned char *sourceend;
-static int rembits = 0;
-
-
-
-static int readblock(DUMBFILE *f)
-{
-	long size;
-	int c;
-
-	size = dumbfile_igetw(f);
-	if (size < 0)
-		return size;
-
-	sourcebuf = malloc(size);
-	if (!sourcebuf)
-		return -1;
-
-	c = dumbfile_getnc((char *)sourcebuf, size, f);
-	if (c < size) {
-		free(sourcebuf);
-		sourcebuf = NULL;
-		return -1;
-	}
-
-	sourcepos = sourcebuf;
-	sourceend = sourcebuf + size;
-	rembits = 8;
-	return 0;
-}
-
-
-
-static void freeblock(void)
-{
-	free(sourcebuf);
-	sourcebuf = NULL;
-}
-
-
-
-static int readbits(int bitwidth)
-{
-	int val = 0;
-	int b = 0;
-
-	if (sourcepos >= sourceend) return val;
-
-	while (bitwidth > rembits) {
-		val |= *sourcepos++ << b;
-		if (sourcepos >= sourceend) return val;
-		b += rembits;
-		bitwidth -= rembits;
-		rembits = 8;
-	}
-
-	val |= (*sourcepos & ((1 << bitwidth) - 1)) << b;
-	*sourcepos >>= bitwidth;
-	rembits -= bitwidth;
-
-	return val;
-}
-
-
-
-/** WARNING - do we even need to pass `right`? */
-/** WARNING - why bother memsetting at all? The whole array is written... */
-// if we do memset, dumb_silence() would be neater...
-static int decompress8(DUMBFILE *f, sample_t *left, sample_t *right, int len, int cmwt)
-{
-	int blocklen, blockpos;
-	byte bitwidth;
-	word val;
-	char d1, d2;
-
-	memset(left, 0, len * sizeof(*left));
-	if (right) {
-		memset(right, 0, len * sizeof(*right));
-		len <<= 1;
-	}
-
-	while (len > 0) {
-		//Read a block of compressed data:
-		if (readblock(f))
-			return -1;
-		//Set up a few variables
-		blocklen = (len < 0x8000) ? len : 0x8000; //Max block length is 0x8000 bytes
-		blockpos = 0;
-		bitwidth = 9;
-		d1 = d2 = 0;
-		//Start the decompression:
-		while (blockpos < blocklen) {
-			//Read a value:
-			val = (word)readbits(bitwidth);
-			//Check for bit width change:
-
-			if (bitwidth < 7) { //Method 1:
-				if (val == (1 << (bitwidth - 1))) {
-					val = (word)readbits(3) + 1;
-					bitwidth = (val < bitwidth) ? val : val + 1;
-					continue;
-				}
-			}
-			else if (bitwidth < 9) { //Method 2
-				byte border = (0xFF >> (9 - bitwidth)) - 4;
-
-				if (val > border && val <= (border + 8)) {
-					val -= border;
-					bitwidth = (val < bitwidth) ? val : val + 1;
-					continue;
-				}
-			}
-			else if (bitwidth == 9) { //Method 3
-				if (val & 0x100) {
-					bitwidth = (val + 1) & 0xFF;
-					continue;
-				}
-			}
-			else { //Illegal width, abort ?
-				freeblock();
-				return -1;
-			}
-
-			//Expand the value to signed byte:
-			{
-				char v; //The sample value:
-				if (bitwidth < 8) {
-					byte shift = 8 - bitwidth;
-					v = (val << shift);
-					v >>= shift;
-				}
-				else
-					v = (char)val;
-
-				//And integrate the sample value
-				//(It always has to end with integration doesn't it ? ;-)
-				d1 += v;
-				d2 += d1;
-			}
-
-			//Store !
-			/* Version 2.15 was an unofficial version with hacked compression
-			 * code. Yay, better compression :D
-			 */
-			if (right && (len & 1))
-				*right++ = (int)(signed char)(cmwt == 0x215 ? d2 : d1) << 16;
-			else
-				*left++ = (int)(signed char)(cmwt == 0x215 ? d2 : d1) << 16;
-			len--;
-			blockpos++;
-		}
-		freeblock();
-	}
-	return 0;
-}
-
-
-
-static int decompress16(DUMBFILE *f, sample_t *left, sample_t *right, int len, int cmwt)
-{
-	int blocklen, blockpos;
-	byte bitwidth;
-	long val;
-	short d1, d2;
-
-	memset(left, 0, len * sizeof(*left));
-	if (right) {
-		memset(right, 0, len * sizeof(*right));
-		len <<= 1;
-	}
-
-	while (len > 0) {
-		//Read a block of compressed data:
-		if (readblock(f))
-			return -1;
-		//Set up a few variables
-		blocklen = (len < 0x4000) ? len : 0x4000; // Max block length is 0x4000 bytes
-		blockpos = 0;
-		bitwidth = 17;
-		d1 = d2 = 0;
-		//Start the decompression:
-		while (blockpos < blocklen) {
-			val = readbits(bitwidth);
-			//Check for bit width change:
-
-			if (bitwidth < 7) { //Method 1:
-				if (val == (1 << (bitwidth - 1))) {
-					val = readbits(4) + 1;
-					bitwidth = (val < bitwidth) ? val : val + 1;
-					continue;
-				}
-			}
-			else if (bitwidth < 17) { //Method 2
-				word border = (0xFFFF >> (17 - bitwidth)) - 8;
-
-				if (val > border && val <= (border + 16)) {
-					val -= border;
-					bitwidth = val < bitwidth ? val : val + 1;
-					continue;
-				}
-			}
-			else if (bitwidth == 17) { //Method 3
-				if (val & 0x10000) {
-					bitwidth = (val + 1) & 0xFF;
-					continue;
-				}
-			}
-			else { //Illegal width, abort ?
-				freeblock();
-				return -1;
-			}
-
-			//Expand the value to signed byte:
-			{
-				short v; //The sample value:
-				if (bitwidth < 16) {
-					byte shift = 16 - bitwidth;
-					v = (short)(val << shift);
-					v >>= shift;
-				}
-				else
-					v = (short)val;
-
-				//And integrate the sample value
-				//(It always has to end with integration doesn't it ? ;-)
-				d1 += v;
-				d2 += d1;
-			}
-
-			//Store !
-			/* Version 2.15 was an unofficial version with hacked compression
-			 * code. Yay, better compression :D
-			 */
-			if (right && (len & 1))
-				*right++ = (int)(signed short)(cmwt == 0x215 ? d2 : d1) << 8;
-			else
-				*left++ = (int)(signed short)(cmwt == 0x215 ? d2 : d1) << 8;
-			len--;
-			blockpos++;
-		}
-		freeblock();
-	}
-	return 0;
-}
-
-
-
-static int it_read_envelope(IT_ENVELOPE *envelope, DUMBFILE *f)
-{
-	int n;
-
-	envelope->flags = dumbfile_getc(f);
-	envelope->n_nodes = dumbfile_getc(f);
-	envelope->loop_start = dumbfile_getc(f);
-	envelope->loop_end = dumbfile_getc(f);
-	envelope->sus_loop_start = dumbfile_getc(f);
-	envelope->sus_loop_end = dumbfile_getc(f);
-	for (n = 0; n < envelope->n_nodes; n++) {
-		envelope->node_y[n] = dumbfile_getc(f);
-		envelope->node_t[n] = dumbfile_igetw(f);
-	}
-	dumbfile_skip(f, 75 - envelope->n_nodes * 3 + 1);
-
-	return dumbfile_error(f);
-}
-
-
-
-static int it_read_old_instrument(IT_INSTRUMENT *instrument, DUMBFILE *f)
-{
-	int n;
-
-	if (dumbfile_mgetl(f) != IT_INSTRUMENT_SIGNATURE)
-		return -1;
-
-	/* Skip DOS Filename. */
-	dumbfile_skip(f, 13);
-
-	instrument->volume_envelope.flags = dumbfile_getc(f);
-	instrument->volume_envelope.loop_start = dumbfile_getc(f);
-	instrument->volume_envelope.loop_end = dumbfile_getc(f);
-	instrument->volume_envelope.sus_loop_start = dumbfile_getc(f);
-	instrument->volume_envelope.sus_loop_end = dumbfile_getc(f);
-
-	/* Skip two unused bytes. */
-	dumbfile_skip(f, 2);
-
-	/* In the old instrument format, fadeout ranges from 0 to 64, and is
-	 * subtracted at intervals from a value starting at 512. In the new
-	 * format, all these values are doubled. Therefore we double when loading
-	 * from the old instrument format - that way we don't have to think about
-	 * it later.
-	 */
-	instrument->fadeout = dumbfile_igetw(f) << 1;
-	instrument->new_note_action = dumbfile_getc(f);
-	instrument->dup_check_type = dumbfile_getc(f);
-	instrument->dup_check_action = DCA_NOTE_CUT; // This might be wrong!
-	/** WARNING - what is the duplicate check action for old-style instruments? */
-
-	/* Skip Tracker Version and Number of Samples. These are only used in
-	 * separate instrument files. Also skip unused bytes and Instrument Name.
-	 */
-	dumbfile_skip(f, 36);
-
-	instrument->pp_separation = 0;
-	instrument->pp_centre = 60;
-	instrument->global_volume = 128;
-	/** WARNING - should global_volume be 64 or something? */
-	instrument->default_pan = 32;
-	/** WARNING - should default_pan be 128, meaning don`t use? */
-	instrument->random_volume = 0;
-	instrument->random_pan = 0;
-
-	for (n = 0; n < 120; n++) {
-		instrument->map_note[n] = dumbfile_getc(f);
-		instrument->map_sample[n] = dumbfile_getc(f);
-	}
-
-	/* Skip "Volume envelope (200 bytes)". */
-	// - need to know better what this is for though.
-	dumbfile_skip(f, 200);
-
-#if defined(INVESTIGATE_OLD_INSTRUMENTS) && 0
-	fprintf(stderr, "Inst %02d Env:", n);
-#endif
-
-	for (n = 0; n < 25; n++)
-	{
-		instrument->volume_envelope.node_t[n] = dumbfile_getc(f);
-		instrument->volume_envelope.node_y[n] = dumbfile_getc(f);
-
-#if defined(INVESTIGATE_OLD_INSTRUMENTS) && 0
-		fprintf(stderr, " %d,%d",
-				instrument->volume_envelope.node_t[n],
-				instrument->volume_envelope.node_y[n]);
-#endif
-
-		// This loop is unfinished, as we can probably escape from it before
-		// the end if we want to. Hence the otherwise useless dumbfile_skip()
-		// call below.
-	}
-	dumbfile_skip(f, 50 - (n << 1));
-	instrument->volume_envelope.n_nodes = n;
-
-#if defined(INVESTIGATE_OLD_INSTRUMENTS) && 0
-	fprintf(stderr, "\n");
-#endif
-
-	if (dumbfile_error(f))
-		return -1;
-
-	instrument->filter_cutoff = 127;
-	instrument->filter_resonance = 0;
-
-	instrument->pan_envelope.flags = 0;
-	instrument->pitch_envelope.flags = 0;
-
-	return 0;
-}
-
-
-
-static int it_read_instrument(IT_INSTRUMENT *instrument, DUMBFILE *f)
-{
-	int n;
-
-	if (dumbfile_mgetl(f) != IT_INSTRUMENT_SIGNATURE)
-		return -1;
-
-	/* Skip DOS Filename. */
-	dumbfile_skip(f, 13);
-
-	instrument->new_note_action = dumbfile_getc(f);
-	instrument->dup_check_type = dumbfile_getc(f);
-	instrument->dup_check_action = dumbfile_getc(f);
-	instrument->fadeout = dumbfile_igetw(f);
-	instrument->pp_separation = dumbfile_getc(f);
-	instrument->pp_centre = dumbfile_getc(f);
-	instrument->global_volume = dumbfile_getc(f);
-	instrument->default_pan = dumbfile_getc(f);
-	instrument->random_volume = dumbfile_getc(f);
-	instrument->random_pan = dumbfile_getc(f);
-
-	/* Skip Tracker Version and Number of Samples. These are only used in
-	 * separate instrument files. Also skip unused byte and Instrument Name.
-	 */
-	dumbfile_skip(f, 30);
-
-	instrument->filter_cutoff = dumbfile_getc(f);
-	instrument->filter_resonance = dumbfile_getc(f);
-
-	/* Skip MIDI Channel, Program and Bank. */
-	dumbfile_skip(f, 4);
-
-	for (n = 0; n < 120; n++) {
-		instrument->map_note[n] = dumbfile_getc(f);
-		instrument->map_sample[n] = dumbfile_getc(f);
-	}
-
-	if (dumbfile_error(f))
-		return -1;
-
-	if (it_read_envelope(&instrument->volume_envelope, f)) return -1;
-	if (it_read_envelope(&instrument->pan_envelope, f)) return -1;
-	if (it_read_envelope(&instrument->pitch_envelope, f)) return -1;
-
-	return 0;
-}
-
-
-
-static int it_read_sample_header(IT_SAMPLE *sample, unsigned char *convert, long *offset, DUMBFILE *f)
-{
-	if (dumbfile_mgetl(f) != IT_SAMPLE_SIGNATURE)
-		return -1;
-
-	/* Skip DOS Filename. */
-	dumbfile_skip(f, 13);
-
-	sample->global_volume = dumbfile_getc(f);
-	sample->flags = dumbfile_getc(f);
-	sample->default_volume = dumbfile_getc(f);
-
-	/* Skip Sample Name. */
-	dumbfile_skip(f, 26);
-
-	*convert = dumbfile_getc(f);
-	sample->default_pan = dumbfile_getc(f);
-	sample->length = dumbfile_igetl(f);
-	sample->loop_start = dumbfile_igetl(f);
-	sample->loop_end = dumbfile_igetl(f);
-	sample->C5_speed = dumbfile_igetl(f);
-	sample->sus_loop_start = dumbfile_igetl(f);
-	sample->sus_loop_end = dumbfile_igetl(f);
-
-#ifdef STEREO_SAMPLES_COUNT_AS_TWO
-	if (sample->flags & IT_SAMPLE_STEREO) {
-		sample->length >>= 1;
-		sample->loop_start >>= 1;
-		sample->loop_end >>= 1;
-		sample->C5_speed >>= 1;
-		sample->sus_loop_start >>= 1;
-		sample->sus_loop_end >>= 1;
-	}
-#endif
-
-	if (sample->flags & IT_SAMPLE_EXISTS) {
-		if (sample->length <= 0)
-			sample->flags &= ~IT_SAMPLE_EXISTS;
-		else {
-			if ((unsigned int)sample->loop_end > (unsigned int)sample->length)
-				sample->flags &= ~IT_SAMPLE_LOOP;
-			else if ((unsigned int)sample->loop_start >= (unsigned int)sample->loop_end)
-				sample->flags &= ~IT_SAMPLE_LOOP;
-
-			if ((unsigned int)sample->sus_loop_end > (unsigned int)sample->length)
-				sample->flags &= ~IT_SAMPLE_SUS_LOOP;
-			else if ((unsigned int)sample->sus_loop_start >= (unsigned int)sample->sus_loop_end)
-				sample->flags &= ~IT_SAMPLE_SUS_LOOP;
-
-			/* We may be able to truncate the sample to save memory. */
-			if (sample->flags & IT_SAMPLE_LOOP) {
-				if ((sample->flags & IT_SAMPLE_SUS_LOOP) && sample->sus_loop_end >= sample->loop_end)
-					sample->length = sample->sus_loop_end;
-				else
-					sample->length = sample->loop_end;
-			}
-		}
-	}
-
-	*offset = dumbfile_igetl(f);
-
-	sample->vibrato_speed = dumbfile_getc(f);
-	sample->vibrato_depth = dumbfile_getc(f);
-	sample->vibrato_rate = dumbfile_getc(f);
-	sample->vibrato_waveform = dumbfile_getc(f);
-
-	return dumbfile_error(f);
-}
-
-
-
-static long it_read_sample_data(int cmwt, IT_SAMPLE *sample, unsigned char convert, DUMBFILE *f)
-{
-	long n;
-
-	sample->left = malloc(sample->length * sizeof(*sample->left));
-	if (!sample->left)
-		return -1;
-
-	if (sample->flags & IT_SAMPLE_STEREO) {
-		sample->right = malloc(sample->length * sizeof(*sample->right));
-		if (!sample->right)
-			return -1;
-	}
-
-	if (sample->flags & 8) {
-		/* If the sample is packed, then we must unpack it. */
-
-		/** WARNING - unresolved business here... test with ModPlug? */
-
-		if (sample->flags & IT_SAMPLE_STEREO)
-                    return -1;
-                
-/*
-//#ifndef STEREO_SAMPLES_COUNT_AS_TWO
-		ASSERT(!(sample->flags & IT_SAMPLE_STEREO));
-//#endif
-*/
-		if (sample->flags & IT_SAMPLE_16BIT)
-			decompress16(f, sample->left, sample->right, sample->length, cmwt);
-		else
-			decompress8(f, sample->left, sample->right, sample->length, cmwt);
-	} else if (sample->flags & IT_SAMPLE_STEREO) {
-		if (sample->flags & IT_SAMPLE_16BIT) {
-			if (convert & 2) {
-				for (n = 0; n < sample->length; n++) {
-					sample->left[n] = (int)(signed short)dumbfile_mgetw(f) << 8;
-					sample->right[n] = (int)(signed short)dumbfile_mgetw(f) << 8;
-				}
-			} else {
-				for (n = 0; n < sample->length; n++) {
-					sample->left[n] = (int)(signed short)dumbfile_igetw(f) << 8;
-					sample->right[n] = (int)(signed short)dumbfile_igetw(f) << 8;
-				}
-			}
-		} else {
-			for (n = 0; n < sample->length; n++) {
-				sample->left[n] = (int)(signed char)dumbfile_getc(f) << 16;
-				sample->right[n] = (int)(signed char)dumbfile_getc(f) << 16;
-			}
-		}
-	} else if (sample->flags & IT_SAMPLE_16BIT) {
-		if (convert & 2)
-			for (n = 0; n < sample->length; n++)
-				sample->left[n] = (int)(signed short)dumbfile_mgetw(f) << 8;
-		else
-			for (n = 0; n < sample->length; n++)
-				sample->left[n] = (int)(signed short)dumbfile_igetw(f) << 8;
-	} else
-		for (n = 0; n < sample->length; n++)
-			sample->left[n] = (int)(signed char)dumbfile_getc(f) << 16;
-
-	if (dumbfile_error(f))
-		return -1;
-
-	if (!(convert & 1)) {
-		/* Convert to signed. */
-		for (n = 0; n < sample->length; n++)
-			sample->left[n] ^= 0xFF800000;
-
-		if (sample->right)
-			for (n = 0; n < sample->length; n++)
-				sample->right[n] ^= 0xFF800000;
-	}
-
-	/* NOT SUPPORTED:
-	 *
-	 * convert &  4 - Samples stored as delta values
-	 * convert & 16 - Samples stored as TX-Wave 12-bit values
-	 * convert & 32 - Left/Right/All Stereo prompt
-	 */
-
-	return 0;
-}
-
-
-
-#define DETECT_DUPLICATE_CHANNELS
-#ifdef DETECT_DUPLICATE_CHANNELS
-#include <stdio.h>
-#endif
-static int it_read_pattern(IT_PATTERN *pattern, DUMBFILE *f, unsigned char *buffer)
-{
-	unsigned char cmask[DUMB_IT_N_CHANNELS];
-	unsigned char cnote[DUMB_IT_N_CHANNELS];
-	unsigned char cinstrument[DUMB_IT_N_CHANNELS];
-	unsigned char cvolpan[DUMB_IT_N_CHANNELS];
-	unsigned char ceffect[DUMB_IT_N_CHANNELS];
-	unsigned char ceffectvalue[DUMB_IT_N_CHANNELS];
-#ifdef DETECT_DUPLICATE_CHANNELS
-	IT_ENTRY *dupentry[DUMB_IT_N_CHANNELS];
-#endif
-
-	int n_entries = 0;
-	int buflen;
-	int bufpos = 0;
-
-	IT_ENTRY *entry;
-
-	unsigned char channel;
-	unsigned char mask;
-
-	memset(cmask, 0, sizeof(cmask));
-	memset(cnote, 0, sizeof(cnote));
-	memset(cinstrument, 0, sizeof(cinstrument));
-	memset(cvolpan, 0, sizeof(cvolpan));
-	memset(ceffect, 0, sizeof(ceffect));
-	memset(ceffectvalue, 0, sizeof(ceffectvalue));
-#ifdef DETECT_DUPLICATE_CHANNELS
-	{
-		int i;
-		for (i = 0; i < DUMB_IT_N_CHANNELS; i++) dupentry[i] = NULL;
-	}
-#endif
-
-	buflen = dumbfile_igetw(f);
-	pattern->n_rows = dumbfile_igetw(f);
-
-	/* Skip four unused bytes. */
-	dumbfile_skip(f, 4);
-
-	if (dumbfile_error(f))
-		return -1;
-
-	/* Read in the pattern data. */
-	dumbfile_getnc((char *)buffer, buflen, f);
-
-	if (dumbfile_error(f))
-		return -1;
-
-	/* Scan the pattern data, and work out how many entries we need room for. */
-	while (bufpos < buflen) {
-		unsigned char b = buffer[bufpos++];
-
-		if (b == 0) {
-			/* End of row */
-			n_entries++;
-			continue;
-		}
-
-		channel = (b - 1) & 63;
-
-		if (b & 128)
-			cmask[channel] = mask = buffer[bufpos++];
-		else
-			mask = cmask[channel];
-
-		{
-			static const unsigned char used[16] = {0, 1, 1, 2, 1, 2, 2, 3, 2, 3, 3, 4, 3, 4, 4, 5};
-			n_entries += (mask != 0);
-			bufpos += used[mask & 15];
-		}
-	}
-
-	pattern->n_entries = n_entries;
-
-	pattern->entry = malloc(n_entries * sizeof(*pattern->entry));
-
-	if (!pattern->entry)
-		return -1;
-
-	bufpos = 0;
-	memset(cmask, 0, sizeof(cmask));
-
-	entry = pattern->entry;
-
-	while (bufpos < buflen) {
-		unsigned char b = buffer[bufpos++];
-
-		if (b == 0) {
-			/* End of row */
-			IT_SET_END_ROW(entry);
-			entry++;
-#ifdef DETECT_DUPLICATE_CHANNELS
-			{
-				int i;
-				for (i = 0; i < DUMB_IT_N_CHANNELS; i++) dupentry[i] = NULL;
-			}
-#endif
-			continue;
-		}
-
-		channel = (b - 1) & 63;
-
-		if (b & 128)
-			cmask[channel] = mask = buffer[bufpos++];
-		else
-			mask = cmask[channel];
-
-		if (mask) {
-			entry->mask = (mask & 15) | (mask >> 4);
-			entry->channel = channel;
-
-			if (mask & IT_ENTRY_NOTE)
-				cnote[channel] = entry->note = buffer[bufpos++];
-			else if (mask & (IT_ENTRY_NOTE << 4))
-				entry->note = cnote[channel];
-
-			if (mask & IT_ENTRY_INSTRUMENT)
-				cinstrument[channel] = entry->instrument = buffer[bufpos++];
-			else if (mask & (IT_ENTRY_INSTRUMENT << 4))
-				entry->instrument = cinstrument[channel];
-
-			if (mask & IT_ENTRY_VOLPAN)
-				cvolpan[channel] = entry->volpan = buffer[bufpos++];
-			else if (mask & (IT_ENTRY_VOLPAN << 4))
-				entry->volpan = cvolpan[channel];
-
-			if (mask & IT_ENTRY_EFFECT) {
-				ceffect[channel] = entry->effect = buffer[bufpos++];
-				ceffectvalue[channel] = entry->effectvalue = buffer[bufpos++];
-			} else {
-				entry->effect = ceffect[channel];
-				entry->effectvalue = ceffectvalue[channel];
-			}
-
-#if defined( DETECT_DUPLICATE_CHANNELS) && 0
-			if (dupentry[channel]) {
-				FILE *f = fopen("dupentry.txt", "a");
-				if (!f) abort();
-				fprintf(f, "Two events on channel %d:", channel);
-				fprintf(f, "  Event #1:");
-				if (dupentry[channel]->mask & IT_ENTRY_NOTE      ) fprintf(f, " %03d", dupentry[channel]->note      ); else fprintf(f, " ...");
-				if (dupentry[channel]->mask & IT_ENTRY_INSTRUMENT) fprintf(f, " %03d", dupentry[channel]->instrument); else fprintf(f, " ...");
-				if (dupentry[channel]->mask & IT_ENTRY_VOLPAN    ) fprintf(f, " %03d", dupentry[channel]->volpan    ); else fprintf(f, " ...");
-				if (dupentry[channel]->mask & IT_ENTRY_EFFECT) fprintf(f, " %c%02X\n", 'A' - 1 + dupentry[channel]->effect, dupentry[channel]->effectvalue); else fprintf(f, " ...\n");
-				fprintf(f, "  Event #2:");
-				if (entry->mask & IT_ENTRY_NOTE      ) fprintf(f, " %03d", entry->note      ); else fprintf(f, " ...");
-				if (entry->mask & IT_ENTRY_INSTRUMENT) fprintf(f, " %03d", entry->instrument); else fprintf(f, " ...");
-				if (entry->mask & IT_ENTRY_VOLPAN    ) fprintf(f, " %03d", entry->volpan    ); else fprintf(f, " ...");
-				if (entry->mask & IT_ENTRY_EFFECT) fprintf(f, " %c%02X\n", 'A' - 1 + entry->effect, entry->effectvalue); else fprintf(f, " ...\n");
-				fclose(f);
-			}
-			dupentry[channel] = entry;
-#endif
-
-			entry++;
-		}
-	}
-
-	ASSERT(entry == pattern->entry + n_entries);
-
-	return 0;
-}
-
-
-
-/* Currently we assume the sample data are stored after the sample headers in
- * module files. This assumption may be unjustified; let me know if you have
- * trouble.
- */
-
-#define IT_COMPONENT_INSTRUMENT 1
-#define IT_COMPONENT_PATTERN    2
-#define IT_COMPONENT_SAMPLE     3
-
-typedef struct IT_COMPONENT
-{
-	unsigned char type;
-	unsigned char n;
-	long offset;
-	short sampfirst; /* component[sampfirst] = first sample data after this */
-	short sampnext; /* sampnext is used to create linked lists of sample data */
-}
-IT_COMPONENT;
-
-
-
-static int it_component_compare(const void *e1, const void *e2)
-{
-	return ((const IT_COMPONENT *)e1)->offset -
-	       ((const IT_COMPONENT *)e2)->offset;
-}
-
-
-
-static sigdata_t *it_load_sigdata(DUMBFILE *f)
-{
-	DUMB_IT_SIGDATA *sigdata;
-
-	int cwt, cmwt;
-	int special;
-
-	IT_COMPONENT *component;
-	int n_components = 0;
-
-	unsigned char sample_convert[256];
-
-	int n;
-
-	unsigned char *buffer;
-
-	if (dumbfile_mgetl(f) != IT_SIGNATURE)
-		return NULL;
-
-	sigdata = malloc(sizeof(*sigdata));
-
-	if (!sigdata)
-		return NULL;
-
-	sigdata->order = NULL;
-	sigdata->instrument = NULL;
-	sigdata->sample = NULL;
-	sigdata->pattern = NULL;
-	sigdata->midi = NULL;
-	sigdata->checkpoint = NULL;
-
-	/* Skip song name and pattern row highlight info. */
-	dumbfile_skip(f, 28);
-
-	sigdata->n_orders = dumbfile_igetw(f);
-	sigdata->n_instruments = dumbfile_igetw(f);
-	sigdata->n_samples = dumbfile_igetw(f);
-	sigdata->n_patterns = dumbfile_igetw(f);
-
-	cwt = dumbfile_igetw(f);
-	cmwt = dumbfile_igetw(f);
-
-	sigdata->flags = dumbfile_igetw(f);
-	special = dumbfile_igetw(f);
-
-	sigdata->global_volume = dumbfile_getc(f);
-	sigdata->mixing_volume = dumbfile_getc(f);
-	sigdata->speed = dumbfile_getc(f);
-	if (sigdata->speed == 0) sigdata->speed = 6; // Should we? What about tempo?
-	sigdata->tempo = dumbfile_getc(f);
-	sigdata->pan_separation = dumbfile_getc(f); /** WARNING: use this */
-
-	/* Skip Pitch Wheel Depth, Message Length, Message Offset and Reserved. */
-	dumbfile_skip(f, 11);
-
-	dumbfile_getnc((char *)sigdata->channel_pan, DUMB_IT_N_CHANNELS, f);
-	dumbfile_getnc((char *)sigdata->channel_volume, DUMB_IT_N_CHANNELS, f);
-
-	if (dumbfile_error(f) || sigdata->n_orders <= 0 || sigdata->n_instruments > 256 || sigdata->n_samples > 256 || sigdata->n_patterns > 256) {
-		_dumb_it_unload_sigdata(sigdata);
-		return NULL;
-	}
-
-	sigdata->order = malloc(sigdata->n_orders);
-	if (!sigdata->order) {
-		_dumb_it_unload_sigdata(sigdata);
-		return NULL;
-	}
-
-	if (sigdata->n_instruments) {
-		sigdata->instrument = malloc(sigdata->n_instruments * sizeof(*sigdata->instrument));
-		if (!sigdata->instrument) {
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-	}
-
-	if (sigdata->n_samples) {
-		sigdata->sample = malloc(sigdata->n_samples * sizeof(*sigdata->sample));
-		if (!sigdata->sample) {
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-		for (n = 0; n < sigdata->n_samples; n++)
-			sigdata->sample[n].right = sigdata->sample[n].left = NULL;
-	}
-
-	if (sigdata->n_patterns) {
-		sigdata->pattern = malloc(sigdata->n_patterns * sizeof(*sigdata->pattern));
-		if (!sigdata->pattern) {
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-		for (n = 0; n < sigdata->n_patterns; n++)
-			sigdata->pattern[n].entry = NULL;
-	}
-
-	dumbfile_getnc((char *)sigdata->order, sigdata->n_orders, f);
-	sigdata->restart_position = 0;
-
-	component = malloc(768 * sizeof(*component));
-	if (!component) {
-		_dumb_it_unload_sigdata(sigdata);
-		return NULL;
-	}
-
-	for (n = 0; n < sigdata->n_instruments; n++) {
-		component[n_components].type = IT_COMPONENT_INSTRUMENT;
-		component[n_components].n = n;
-		component[n_components].offset = dumbfile_igetl(f);
-		component[n_components].sampfirst = -1;
-		n_components++;
-	}
-
-	for (n = 0; n < sigdata->n_samples; n++) {
-		component[n_components].type = IT_COMPONENT_SAMPLE;
-		component[n_components].n = n;
-		component[n_components].offset = dumbfile_igetl(f);
-		component[n_components].sampfirst = -1;
-		n_components++;
-	}
-
-	for (n = 0; n < sigdata->n_patterns; n++) {
-		long offset = dumbfile_igetl(f);
-		if (offset) {
-			component[n_components].type = IT_COMPONENT_PATTERN;
-			component[n_components].n = n;
-			component[n_components].offset = offset;
-			component[n_components].sampfirst = -1;
-			n_components++;
-		} else {
-			/* Empty 64-row pattern */
-			sigdata->pattern[n].n_rows = 64;
-			sigdata->pattern[n].n_entries = 0;
-		}
-	}
-
-	if (dumbfile_error(f)) {
-		free(component);
-		_dumb_it_unload_sigdata(sigdata);
-		return NULL;
-	}
-
-	if (!(sigdata->flags & 128) != !(special & 8)) {
-#if 0
-		fprintf(stderr, "Flags   Bit 7 (\"Request embedded MIDI configuration\"): %s\n", sigdata->flags & 128 ? "=SET=" : "clear");
-		fprintf(stderr, "Special Bit 3     (\"MIDI configuration embedded\")    : %s\n", special        &   8 ? "=SET=" : "clear");
-		fprintf(stderr, "entheh would like to investigate this IT file.\n");
-		fprintf(stderr, "Please contact him! entheh@users.sf.net\n");
-#endif
-	}
-
-	if (special & 8) {
-		/* MIDI configuration is embedded. */
-		unsigned char mididata[32];
-		int i;
-		sigdata->midi = malloc(sizeof(*sigdata->midi));
-		if (!sigdata->midi) {
-			free(component);
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-			// Should we be happy with this outcome in some situations?
-		}
-		// What are we skipping?
-		i = dumbfile_igetw(f);
-		if (dumbfile_error(f) || dumbfile_skip(f, 8*i)) {
-			free(component);
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-		/* Read embedded MIDI configuration */
-		// What are the first 9 commands for?
-		if (dumbfile_skip(f, 32*9)) {
-			free(component);
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-		for (i = 0; i < 16; i++) {
-			unsigned char len = 0;
-			int j, leftdigit = -1;
-			if (dumbfile_getnc((char *)mididata, 32, f) < 32) {
-				free(component);
-				_dumb_it_unload_sigdata(sigdata);
-				return NULL;
-			}
-			sigdata->midi->SFmacroz[i] = 0;
-			for (j = 0; j < 32; j++) {
-				if (leftdigit >= 0) {
-					if (mididata[j] == 0) {
-						sigdata->midi->SFmacro[i][len++] = leftdigit;
-						break;
-					} else if (mididata[j] == ' ')
-						sigdata->midi->SFmacro[i][len++] = leftdigit;
-					else if (mididata[j] >= '0' && mididata[j] <= '9')
-						sigdata->midi->SFmacro[i][len++] = (leftdigit << 4) | (mididata[j] - '0');
-					else if (mididata[j] >= 'A' && mididata[j] <= 'F')
-						sigdata->midi->SFmacro[i][len++] = (leftdigit << 4) | (mididata[j] - 'A' + 0xA);
-					leftdigit = -1;
-				} else if (mididata[j] == 0)
-					break;
-				else if (mididata[j] == 'z')
-					sigdata->midi->SFmacroz[i] |= 1 << len++;
-				else if (mididata[j] >= '0' && mididata[j] <= '9')
-					leftdigit = mididata[j] - '0';
-				else if (mididata[j] >= 'A' && mididata[j] <= 'F')
-					leftdigit = mididata[j] - 'A' + 0xA;
-			}
-			sigdata->midi->SFmacrolen[i] = len;
-		}
-		for (i = 0; i < 128; i++) {
-			unsigned char len = 0;
-			int j, leftdigit = -1;
-			dumbfile_getnc((char *)mididata, 32, f);
-			for (j = 0; j < 32; j++) {
-				if (leftdigit >= 0) {
-					if (mididata[j] == 0) {
-						sigdata->midi->Zmacro[i][len++] = leftdigit;
-						break;
-					} else if (mididata[j] == ' ')
-						sigdata->midi->Zmacro[i][len++] = leftdigit;
-					else if (mididata[j] >= '0' && mididata[j] <= '9')
-						sigdata->midi->Zmacro[i][len++] = (leftdigit << 4) | (mididata[j] - '0');
-					else if (mididata[j] >= 'A' && mididata[j] <= 'F')
-						sigdata->midi->Zmacro[i][len++] = (leftdigit << 4) | (mididata[j] - 'A' + 0xA);
-					leftdigit = -1;
-				} else if (mididata[j] == 0)
-					break;
-				else if (mididata[j] >= '0' && mididata[j] <= '9')
-					leftdigit = mididata[j] - '0';
-				else if (mididata[j] >= 'A' && mididata[j] <= 'F')
-					leftdigit = mididata[j] - 'A' + 0xA;
-			}
-			sigdata->midi->Zmacrolen[i] = len;
-		}
-	}
-
-	sigdata->flags &= IT_REAL_FLAGS;
-
-	qsort(component, n_components, sizeof(IT_COMPONENT), &it_component_compare);
-
-	buffer = malloc(65536);
-	if (!buffer) {
-		free(component);
-		_dumb_it_unload_sigdata(sigdata);
-		return NULL;
-	}
-
-	for (n = 0; n < n_components; n++) {
-		long offset;
-		int m;
-
-		if (it_seek(f, component[n].offset)) {
-			free(buffer);
-			free(component);
-			_dumb_it_unload_sigdata(sigdata);
-			return NULL;
-		}
-
-		switch (component[n].type) {
-
-			case IT_COMPONENT_INSTRUMENT:
-				if (cmwt < 0x200)
-					m = it_read_old_instrument(&sigdata->instrument[component[n].n], f);
-				else
-					m = it_read_instrument(&sigdata->instrument[component[n].n], f);
-
-				if (m) {
-					free(buffer);
-					free(component);
-					_dumb_it_unload_sigdata(sigdata);
-					return NULL;
-				}
-				break;
-
-			case IT_COMPONENT_PATTERN:
-				if (it_read_pattern(&sigdata->pattern[component[n].n], f, buffer)) {
-					free(buffer);
-					free(component);
-					_dumb_it_unload_sigdata(sigdata);
-					return NULL;
-				}
-				break;
-
-			case IT_COMPONENT_SAMPLE:
-				if (it_read_sample_header(&sigdata->sample[component[n].n], &sample_convert[component[n].n], &offset, f)) {
-					free(buffer);
-					free(component);
-					_dumb_it_unload_sigdata(sigdata);
-					return NULL;
-				}
-
-				if (sigdata->sample[component[n].n].flags & IT_SAMPLE_EXISTS) {
-					short *sample;
-
-					for (m = n + 1; m < n_components; m++)
-						if (component[m].offset > offset)
-							break;
-					m--;
-
-					sample = &component[m].sampfirst;
-
-					while (*sample >= 0 && component[*sample].offset <= offset)
-						sample = &component[*sample].sampnext;
-
-					component[n].sampnext = *sample;
-					*sample = n;
-
-					component[n].offset = offset;
-				}
-		}
-
-		m = component[n].sampfirst;
-
-		while (m >= 0) {
-			if (it_seek(f, component[m].offset)) {
-				free(buffer);
-				free(component);
-				_dumb_it_unload_sigdata(sigdata);
-				return NULL;
-			}
-
-			if (it_read_sample_data(cmwt, &sigdata->sample[component[m].n], sample_convert[component[m].n], f)) {
-				free(buffer);
-				free(component);
-				_dumb_it_unload_sigdata(sigdata);
-				return NULL;
-			}
-
-			m = component[m].sampnext;
-		}
-	}
-
-	free(buffer);
-	free(component);
-
-	_dumb_it_fix_invalid_orders(sigdata);
-
-	return sigdata;
-}
-
-
-
-DUH *dumb_read_it(DUMBFILE *f)
-{
-	sigdata_t *sigdata;
-	long length;
-
-	DUH_SIGTYPE_DESC *descptr = &_dumb_sigtype_it;
-
-	sigdata = it_load_sigdata(f);
-
-	if (!sigdata)
-		return NULL;
-
-	length = _dumb_it_build_checkpoints(sigdata);
-
-	return make_duh(length, 1, &descptr, &sigdata);
-}
-