Added PT .ptf session audio import functionality

Signed-off-by: Damien Zammit <damien@zamaudio.com>

3 files changed, 814 insertions, 0 deletions

diff --git a/libs/ptformat/ptfformat.cc b/libs/ptformat/ptfformat.cc
new file mode 100644
index 0000000000..dde7367c6c
--- /dev/null
+++ b/libs/ptformat/ptfformat.cc
@@ -0,0 +1,640 @@
+/*
+    Copyright (C) 2015  Damien Zammit
+    Copyright (C) 2015  Robin Gareus
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+*/
+
+#include "ptfformat.h"
+
+#include <stdio.h>
+#include <string>
+#include <assert.h>
+
+using namespace std;
+
+static const uint32_t baselut[16] = {
+	0xaaaaaaaa, 0xaa955555, 0xa9554aaa, 0xa552a955,
+	0xb56ad5aa, 0x95a95a95, 0x94a5294a, 0x9696b4b5,
+	0xd2d25a5a, 0xd24b6d25, 0xdb6db6da, 0xd9249b6d,
+	0xc9b64d92, 0xcd93264d, 0xccd99b32, 0xcccccccd
+};
+
+static const uint32_t xorlut[16] = {
+	0x00000000, 0x00000b00, 0x000100b0, 0x00b0b010,
+	0x010b0b01, 0x0b10b10b, 0x01bb101b, 0x0111bbbb,
+	0x1111bbbb, 0x1bbb10bb, 0x1bb0bb0b, 0xbb0b0bab,
+	0xbab0b0ba, 0xb0abaaba, 0xba0aabaa, 0xbaaaaaaa
+};
+
+static const uint32_t swapbytes32 (const uint32_t v) {
+	uint32_t rv = 0;
+	rv |= ((v >>  0) & 0xf) << 28;
+	rv |= ((v >>  4) & 0xf) << 24;
+	rv |= ((v >>  8) & 0xf) << 20;
+	rv |= ((v >> 12) & 0xf) << 16;
+	rv |= ((v >> 16) & 0xf) << 12;
+	rv |= ((v >> 20) & 0xf) <<  8;
+	rv |= ((v >> 24) & 0xf) <<  4;
+	rv |= ((v >> 28) & 0xf) <<  0;
+	return rv;
+}
+
+static const uint64_t gen_secret (int i) {
+	assert (i > 0 && i < 256);
+	int iwrap = i & 0x7f; // wrap at 0x80;
+	uint32_t xor_lo = 0;  // 0x40 flag
+	int idx;              // mirror at 0x40;
+
+	if (iwrap & 0x40) {
+		xor_lo = 0x1;
+		idx    = 0x80 - iwrap;
+	} else {
+		idx    = iwrap;
+	}
+
+	int i16 = (idx >> 1) & 0xf;
+	if (idx & 0x20) {
+		i16 = 15 - i16;
+	}
+
+	uint32_t lo = baselut [i16];
+	uint32_t xk = xorlut  [i16];
+
+	if (idx & 0x20) {
+		lo ^= 0xaaaaaaab;
+		xk ^= 0x10000000; 
+	}
+	uint32_t hi = swapbytes32 (lo) ^ xk;
+	return  ((uint64_t)hi << 32) | (lo ^ xor_lo);
+}
+
+PTFFormat::PTFFormat() {
+}
+
+PTFFormat::~PTFFormat() {
+	if (ptfunxored) {
+		free(ptfunxored);
+	}
+}
+
+bool
+PTFFormat::foundin(std::string haystack, std::string needle) {
+	size_t found = haystack.find(needle);
+	if (found != std::string::npos) {
+		return true;
+	} else {
+		return false;
+	}
+}
+
+/* Return values:	0            success
+			0x01 to 0xff value of missing lut
+			-1           could not open file as ptf
+*/
+int
+PTFFormat::load(std::string path) {
+	FILE *fp;
+	unsigned char xxor[256];
+	unsigned char ct;
+	unsigned char px;
+	uint64_t key;
+	uint16_t i;
+	int j;
+	int inv;
+	unsigned char message;
+
+	if (! (fp = fopen(path.c_str(), "rb"))) {
+		return -1;
+	}
+
+	fseek(fp, 0, SEEK_END);
+	len = ftell(fp);
+	if (len < 0x40) {
+		fclose(fp);
+		return -1;
+	}
+	fseek(fp, 0x40, SEEK_SET);
+	fread(&c0, 1, 1, fp);
+	fread(&c1, 1, 1, fp);
+
+	if (! (ptfunxored = (unsigned char*) malloc(len * sizeof(unsigned char)))) {
+		/* Silently fail -- out of memory*/
+		fclose(fp);
+		ptfunxored = 0;
+		return -1;
+	}
+
+	i = 2;
+
+	fseek(fp, 0x0, SEEK_SET);
+
+	switch (c0) {
+	case 0x00:
+		// Success! easy one
+		xxor[0] = c0;
+		xxor[1] = c1;
+		for (i = 2; i < 64; i++) {
+			xxor[i] = (xxor[i-1] + c1 - c0) & 0xff;
+		}
+		px = xxor[0];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[0] = message;
+		px  = xxor[1];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[1] = message;
+		i = 2;
+		j = 2;
+		while (fread(&ct, 1, 1, fp) != 0) {
+			if (i%64 == 0) {
+				i = 0;
+			}
+			message = xxor[i] ^ ct;
+			ptfunxored[j] = message;
+			i++;
+			j++;
+		}
+		break;
+	case 0x80:
+		//Success! easy two
+		xxor[0] = c0;
+		xxor[1] = c1;
+		for (i = 2; i < 256; i++) {
+			if (i%64 == 0) {
+				xxor[i] = c0;
+			} else {
+				xxor[i] = ((xxor[i-1] + c1 - c0) & 0xff);
+			}
+		}
+		for (i = 0; i < 64; i++) {
+			xxor[i] ^= 0x80;
+		}
+		for (i = 128; i < 192; i++) {
+			xxor[i] ^= 0x80;
+		}
+		px = xxor[0];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[0] = message;
+		px  = xxor[1];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[1] = message;
+		i = 2;
+		j = 2;
+		while (fread(&ct, 1, 1, fp) != 0) {
+			if (i%256 == 0) {
+				i = 0;
+			}
+			message = xxor[i] ^ ct;
+			ptfunxored[j] = message;
+			i++;
+			j++;
+		}
+		break;
+	case 0x40:
+	case 0xc0:
+		xxor[0] = c0;
+		xxor[1] = c1;
+		for (i = 2; i < 256; i++) {
+			if (i%64 == 0) {
+				xxor[i] = c0;
+			} else {
+				xxor[i] = ((xxor[i-1] + c1 - c0) & 0xff);
+			}
+		}
+
+		key = gen_secret(c1);
+		for (i = 0; i < 64; i++) {
+			xxor[i] ^= (((key >> i) & 1) * 2 * 0x40) + 0x40;
+		}
+		for (i = 128; i < 192; i++) {
+			inv = (((key >> (i-128)) & 1) == 1) ? 1 : 3;
+			xxor[i] ^= (inv * 0x40);
+		}
+		
+		for (i = 192; i < 256; i++) {
+			xxor[i] ^= 0x80;
+		}
+		px = xxor[0];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[0] = message;
+		px  = xxor[1];
+		fread(&ct, 1, 1, fp);
+		message = px ^ ct;
+		ptfunxored[1] = message;
+		i = 2;
+		j = 2;
+		while (fread(&ct, 1, 1, fp) != 0) {
+			if (i%256 == 0) {
+				i = 0;
+			}
+			message = xxor[i] ^ ct;
+			ptfunxored[j] = message;
+			i++;
+			j++;
+		}
+		break;
+		break;
+	default:
+		//Should not happen, failed c[0] c[1]
+		return -1;
+		break;
+	}
+	fclose(fp);
+	parse();
+	return 0;
+}
+
+void
+PTFFormat::parse(void) {
+	this->version = ptfunxored[61];
+
+	if (this->version == 8) {
+		parse8header();
+		parserest();
+	} else if (this->version == 9) {
+		parse9header();
+		parserest();
+	} else {
+		// Should not occur
+	}	
+}
+
+void
+PTFFormat::parse8header(void) {
+	int k;
+
+	// Find session sample rate
+	k = 0;
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 0x5a) &&
+				(ptfunxored[k+1] == 0x05)) {
+			break;
+		}
+		k++;
+	}
+
+	this->sessionrate = 0;
+	this->sessionrate |= ptfunxored[k+11];
+	this->sessionrate |= ptfunxored[k+12] << 8;
+	this->sessionrate |= ptfunxored[k+13] << 16;
+}
+
+void
+PTFFormat::parse9header(void) {
+	int k;
+
+	// Find session sample rate
+	k = 0x100;
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 0x5a) &&
+				(ptfunxored[k+1] == 0x06)) {
+			break;
+		}
+		k++;
+	}
+
+	this->sessionrate = 0;
+	this->sessionrate |= ptfunxored[k+11];
+	this->sessionrate |= ptfunxored[k+12] << 8;
+	this->sessionrate |= ptfunxored[k+13] << 16;
+}
+
+void
+PTFFormat::parserest(void) {
+	int i,j,k,l;
+	
+	// Find end of wav file list
+	k = 0;
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 0xff) &&
+				(ptfunxored[k+1] == 0xff) &&
+				(ptfunxored[k+2] == 0xff) &&
+				(ptfunxored[k+3] == 0xff)) {
+			break;
+		}
+		k++;
+	}
+
+	j = 0;
+	l = 0;
+
+	// Find actual wav names
+	bool first = true;
+	uint16_t numberofwavs;
+	char wavname[256];
+	for (i = k; i > 4; i--) {
+		if (		(ptfunxored[i  ] == 'W') &&
+				(ptfunxored[i-1] == 'A') &&
+				(ptfunxored[i-2] == 'V') &&
+				(ptfunxored[i-3] == 'E')) {
+			j = i-4;
+			l = 0;
+			while (ptfunxored[j] != '\0') {
+				wavname[l] = ptfunxored[j];
+				l++;
+				j--;
+			}
+			wavname[l] = 0;
+			//uint8_t playlist = ptfunxored[j-8];
+
+			if (first) {
+				first = false;
+				for (j = k; j > 4; j--) {
+					if (	(ptfunxored[j  ] == 0x01) &&
+						(ptfunxored[j-1] == 0x5a)) {
+
+						numberofwavs = 0;
+						numberofwavs |= (uint32_t)(ptfunxored[j-2] << 24);
+						numberofwavs |= (uint32_t)(ptfunxored[j-3] << 16);
+						numberofwavs |= (uint32_t)(ptfunxored[j-4] << 8);
+						numberofwavs |= (uint32_t)(ptfunxored[j-5]);
+						//printf("%d wavs\n", numberofwavs);
+						break;
+					}
+				k--;
+				}
+			}
+
+			std::string wave = string(wavname);
+			std::reverse(wave.begin(), wave.end());
+			wav_t f = { wave, (uint16_t)(numberofwavs - 1), 0 };
+
+			if (foundin(wave, string(".grp"))) {
+				continue;
+			}
+
+			actualwavs.push_back(f);
+
+			numberofwavs--;
+			if (numberofwavs <= 0)
+				break;
+		}
+	}
+
+	// Find Regions
+	uint8_t startbytes = 0;
+	uint8_t lengthbytes = 0;
+	uint8_t offsetbytes = 0;
+	uint8_t somethingbytes = 0;
+	uint8_t skipbytes = 0;
+
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 'S') &&
+				(ptfunxored[k+1] == 'n') &&
+				(ptfunxored[k+2] == 'a') &&
+				(ptfunxored[k+3] == 'p')) {
+			break;
+		}
+		k++;
+	}
+	first = true;
+	uint16_t rindex = 0;
+	uint32_t findex = 0;
+	for (i = k; i < len-70; i++) {
+		if (		(ptfunxored[i  ] == 0x5a) &&
+				(ptfunxored[i+1] == 0x0a)) {
+				break;
+		}
+		if (		(ptfunxored[i  ] == 0x5a) &&
+				(ptfunxored[i+1] == 0x0c)) {
+
+			uint8_t lengthofname = ptfunxored[i+9];
+
+			char name[256] = {0};
+			for (j = 0; j < lengthofname; j++) {
+				name[j] = ptfunxored[i+13+j];
+			}
+			name[j] = '\0';
+			j += i+13;
+			//uint8_t disabled = ptfunxored[j];
+
+			offsetbytes = (ptfunxored[j+1] & 0xf0) >> 4;
+			lengthbytes = (ptfunxored[j+2] & 0xf0) >> 4;
+			startbytes = (ptfunxored[j+3] & 0xf0) >> 4;
+			somethingbytes = (ptfunxored[j+3] & 0xf);
+			skipbytes = ptfunxored[j+4];
+			findex = ptfunxored[j+5
+					+startbytes
+					+lengthbytes
+					+offsetbytes
+					+somethingbytes
+					+skipbytes
+					+40];
+			/*rindex = ptfunxored[j+5
+					+startbytes
+					+lengthbytes
+					+offsetbytes
+					+somethingbytes
+					+skipbytes
+					+24];
+			*/
+			uint32_t sampleoffset = 0;
+			switch (offsetbytes) {
+			case 4:
+				sampleoffset |= (uint32_t)(ptfunxored[j+8] << 24);
+			case 3:
+				sampleoffset |= (uint32_t)(ptfunxored[j+7] << 16);
+			case 2:
+				sampleoffset |= (uint32_t)(ptfunxored[j+6] << 8);
+			case 1:
+				sampleoffset |= (uint32_t)(ptfunxored[j+5]);
+			default:
+				break;
+			}
+			j+=offsetbytes;
+			uint32_t length = 0;
+			switch (lengthbytes) {
+			case 4:
+				length |= (uint32_t)(ptfunxored[j+8] << 24);
+			case 3:
+				length |= (uint32_t)(ptfunxored[j+7] << 16);
+			case 2:
+				length |= (uint32_t)(ptfunxored[j+6] << 8);
+			case 1:
+				length |= (uint32_t)(ptfunxored[j+5]);
+			default:
+				break;
+			}
+			j+=lengthbytes;
+			uint32_t start = 0;
+			switch (startbytes) {
+			case 4:
+				start |= (uint32_t)(ptfunxored[j+8] << 24);
+			case 3:
+				start |= (uint32_t)(ptfunxored[j+7] << 16);
+			case 2:
+				start |= (uint32_t)(ptfunxored[j+6] << 8);
+			case 1:
+				start |= (uint32_t)(ptfunxored[j+5]);
+			default:
+				break;
+			}
+			j+=startbytes;
+			uint32_t something = 0;
+			switch (somethingbytes) {
+			case 4:
+				something |= (uint32_t)(ptfunxored[j+8] << 24);
+			case 3:
+				something |= (uint32_t)(ptfunxored[j+7] << 16);
+			case 2:
+				something |= (uint32_t)(ptfunxored[j+6] << 8);
+			case 1:
+				something |= (uint32_t)(ptfunxored[j+5]);
+			default:
+				break;
+			}
+			j+=somethingbytes;
+			std::string filename = string(name) + ".wav";
+			wav_t f = { 
+				filename,
+				0,
+				(int64_t)start,
+				(int64_t)length,
+			};
+
+			f.index = findex;
+			//printf("something=%d\n", something);
+
+			vector<wav_t>::iterator begin = this->actualwavs.begin();
+			vector<wav_t>::iterator finish = this->actualwavs.end();
+			vector<wav_t>::iterator found;
+			// Add file to list only if it is an actual wav
+			if ((found = std::find(begin, finish, f)) != finish) {
+				this->audiofiles.push_back(f);
+				// Also add plain wav as region
+				region_t r = {
+					name,
+					rindex,
+					start,
+					sampleoffset,
+					length,
+					f
+				};
+				this->regions.push_back(r);
+			// Region only
+			} else {
+				if (foundin(filename, string(".grp"))) {
+					continue;
+				}
+				region_t r = {
+					name,
+					rindex,
+					start,
+					sampleoffset,
+					length,
+					f
+				};
+				this->regions.push_back(r);
+			}
+			rindex++;
+		}
+	}
+
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 0x5a) &&
+				(ptfunxored[k+1] == 0x03)) {
+				break;
+		}
+		k++;
+	}
+	while (k < len) {
+		if (		(ptfunxored[k  ] == 0x5a) &&
+				(ptfunxored[k+1] == 0x02)) {
+				break;
+		}
+		k++;
+	}
+	k++;
+
+	//  Tracks
+	uint32_t offset;
+	uint32_t tracknumber = 0;
+	uint32_t regionspertrack = 0;
+	for (;k < len; k++) {
+		if (	(ptfunxored[k  ] == 0x5a) &&
+			(ptfunxored[k+1] == 0x04)) {
+			break;
+		}
+		if (	(ptfunxored[k  ] == 0x5a) &&
+			(ptfunxored[k+1] == 0x02)) {
+
+			uint8_t lengthofname = 0;
+			lengthofname = ptfunxored[k+9];
+			if (lengthofname == 0x5a) {
+				continue;
+			}
+			track_t tr;
+
+			regionspertrack = (uint8_t)(ptfunxored[k+13+lengthofname]);
+
+			//printf("regions/track=%d\n", regionspertrack);
+			char name[256] = {0};
+			for (j = 0; j < lengthofname; j++) {
+				name[j] = ptfunxored[j+k+13];
+			}
+			name[j] = '\0';
+			tr.name = string(name);
+			tr.index = tracknumber++;
+
+			for (j = k; regionspertrack > 0 && j < len; j++) {
+				for (l = j; l < len; l++) {
+					if (	(ptfunxored[l  ] == 0x5a) &&
+						(ptfunxored[l+1] == 0x07)) {
+						j = l;
+						break;
+					}
+				}
+
+
+				if (regionspertrack == 0) {
+				//	tr.reg.index = (uint8_t)ptfunxored[j+13+lengthofname+5];
+					break;
+				} else {
+
+					tr.reg.index = (uint8_t)(ptfunxored[l+11]);
+					vector<region_t>::iterator begin = this->regions.begin();
+					vector<region_t>::iterator finish = this->regions.end();
+					vector<region_t>::iterator found;
+					if ((found = std::find(begin, finish, tr.reg)) != finish) {
+						tr.reg = (*found);
+					}
+					startbytes = (ptfunxored[l+3] & 0xf0) >> 4;
+
+					i = l+16;
+					offset = 0;
+					switch (startbytes) {
+					case 4:
+						offset |= (uint32_t)(ptfunxored[i+3] << 24);
+					case 3:
+						offset |= (uint32_t)(ptfunxored[i+2] << 16);
+					case 2:
+						offset |= (uint32_t)(ptfunxored[i+1] << 8);
+					case 1:
+						offset |= (uint32_t)(ptfunxored[i]);
+					default:
+						break;
+					}
+					tr.reg.startpos = (int64_t)offset;
+					if (tr.reg.length > 0) {
+						this->tracks.push_back(tr);
+					}
+					regionspertrack--;
+				}
+			}
+		}
+	}
+}
diff --git a/libs/ptformat/ptfformat.h b/libs/ptformat/ptfformat.h
new file mode 100644
index 0000000000..0f60dc3335
--- /dev/null
+++ b/libs/ptformat/ptfformat.h
@@ -0,0 +1,131 @@
+/*
+    Copyright (C) 2015  Damien Zammit
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+*/
+#ifndef PTFFORMAT_H
+#define PTFFORMAT_H
+
+#include <string>
+#include <algorithm>
+#include <vector>
+#include <stdint.h>
+
+class PTFFormat {
+public:
+	PTFFormat();
+	~PTFFormat();
+
+	/* Return values:	0            success
+				-1           could not open file as ptf
+	*/
+	int load(std::string path);
+
+	typedef struct wav {
+		std::string filename;
+		uint16_t    index;
+
+		int64_t     posabsolute;
+		int64_t     length;
+
+		bool operator ==(const struct wav& other) {
+			return (this->index == other.index);
+		}
+
+	} wav_t;
+
+	typedef struct region {
+		std::string name;
+		uint16_t    index;
+		int64_t     startpos;
+		int64_t     sampleoffset;
+		int64_t     length;
+		wav_t       wave;
+
+		bool operator ==(const struct region& other) {
+			return (this->index == other.index);
+		}
+	} region_t;
+
+	typedef struct track {
+		std::string name;
+		uint16_t    index;
+		uint8_t     playlist;
+		region_t    reg;
+
+		bool operator ==(const struct track& other) {
+			return (this->index == other.index);
+		}
+	} track_t;
+
+	std::vector<wav_t> audiofiles;
+	std::vector<region_t> regions;
+	std::vector<track_t> tracks;
+
+	static bool trackexistsin(std::vector<track_t> tr, uint16_t index) {
+		std::vector<track_t>::iterator begin = tr.begin();
+		std::vector<track_t>::iterator finish = tr.end();
+		std::vector<track_t>::iterator found;
+
+		track_t f = { std::string(""), index };
+
+		if ((found = std::find(begin, finish, f)) != finish) {
+			return true;
+		}
+		return false;
+	}
+
+	static bool regionexistsin(std::vector<region_t> reg, uint16_t index) {
+		std::vector<region_t>::iterator begin = reg.begin();
+		std::vector<region_t>::iterator finish = reg.end();
+		std::vector<region_t>::iterator found;
+
+		region_t r = { std::string(""), index };
+
+		if ((found = std::find(begin, finish, r)) != finish) {
+			return true;
+		}
+		return false;
+	}
+
+	static bool wavexistsin(std::vector<wav_t> wv, uint16_t index) {
+		std::vector<wav_t>::iterator begin = wv.begin();
+		std::vector<wav_t>::iterator finish = wv.end();
+		std::vector<wav_t>::iterator found;
+
+		wav_t w = { std::string(""), index };
+
+		if ((found = std::find(begin, finish, w)) != finish) {
+			return true;
+		}
+		return false;
+	}
+
+	uint32_t sessionrate;
+	uint8_t version;
+
+	unsigned char c0;
+	unsigned char c1;
+	unsigned char *ptfunxored;
+	int len;
+
+private:
+	bool foundin(std::string haystack, std::string needle);
+	void parse(void);
+	void parse8header(void);
+	void parse9header(void);
+	void parserest(void);
+	std::vector<wav_t> actualwavs;
+};
+
+
+#endif
diff --git a/libs/ptformat/wscript b/libs/ptformat/wscript
new file mode 100644
index 0000000000..3b191d3c75
--- /dev/null
+++ b/libs/ptformat/wscript
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+from waflib.extras import autowaf as autowaf
+import os
+
+# Version of this package (even if built as a child)
+LIBPTFORMAT_VERSION = '0.0.0'
+
+# Library version (UNIX style major, minor, micro)
+# major increment <=> incompatible changes
+# minor increment <=> compatible changes (additions)
+# micro increment <=> no interface changes
+LIBPTFORMAT_LIB_VERSION = '0.0.0'
+
+# Variables for 'waf dist'
+APPNAME = 'libptformat'
+VERSION = LIBPTFORMAT_VERSION
+
+# Mandatory variables
+top = '.'
+out = 'build'
+
+def options(opt):
+    autowaf.set_options(opt)
+
+def configure(conf):
+    conf.load('compiler_cxx')
+    autowaf.configure(conf)
+
+def build(bld):
+    # Library
+    obj = bld(features = 'cxx cxxshlib')
+    obj.source = 'ptfformat.cc'
+    obj.export_includes = ['.']
+    obj.includes     = ['.']
+    obj.name         = 'libptformat'
+    obj.target       = 'ptformat'
+    obj.use          = 'libardour'
+    autowaf.ensure_visible_symbols (obj, True)
+    obj.vnum         = LIBPTFORMAT_LIB_VERSION
+    obj.install_path = os.path.join(bld.env['LIBDIR'], 'ptformat')
+
+def shutdown():
+    autowaf.shutdown()