From c3cdc096cbe0ac178cc537e82208089020d75204 Mon Sep 17 00:00:00 2001
From: Damien Zammit <damien@zamaudio.com>
Date: Thu, 6 Aug 2015 17:25:51 +1000
Subject: Added target samplerate setting, and fixed bug with start offset

Signed-off-by: Damien Zammit <damien@zamaudio.com>
---
 ptfformat.cc | 35 +++++++++++++++++++++++------------
 ptfformat.h  |  7 +++++--
 ptftool.cc   |  4 ++--
 ptunxor.cc   |  2 +-
 4 files changed, 31 insertions(+), 17 deletions(-)

diff --git a/ptfformat.cc b/ptfformat.cc
index dde7367..0af15fc 100644
--- a/ptfformat.cc
+++ b/ptfformat.cc
@@ -102,7 +102,7 @@ PTFFormat::foundin(std::string haystack, std::string needle) {
 			-1           could not open file as ptf
 */
 int
-PTFFormat::load(std::string path) {
+PTFFormat::load(std::string path, int64_t targetsr) {
 	FILE *fp;
 	unsigned char xxor[256];
 	unsigned char ct;
@@ -254,6 +254,7 @@ PTFFormat::load(std::string path) {
 		break;
 	}
 	fclose(fp);
+	this->targetrate = targetsr;
 	parse();
 	return 0;
 }
@@ -264,15 +265,25 @@ PTFFormat::parse(void) {
 
 	if (this->version == 8) {
 		parse8header();
+		setrates();
 		parserest();
 	} else if (this->version == 9) {
 		parse9header();
+		setrates();
 		parserest();
 	} else {
 		// Should not occur
 	}	
 }
 
+void
+PTFFormat::setrates(void) {
+	this->ratefactor = 1.f;
+	if (sessionrate != 0) {
+		this->ratefactor = (float)this->targetrate / this->sessionrate;
+	}
+}
+
 void
 PTFFormat::parse8header(void) {
 	int k;
@@ -502,8 +513,8 @@ PTFFormat::parserest(void) {
 			wav_t f = { 
 				filename,
 				0,
-				(int64_t)start,
-				(int64_t)length,
+				(int64_t)(start*this->ratefactor),
+				(int64_t)(length*this->ratefactor),
 			};
 
 			f.index = findex;
@@ -519,9 +530,9 @@ PTFFormat::parserest(void) {
 				region_t r = {
 					name,
 					rindex,
-					start,
-					sampleoffset,
-					length,
+					(int64_t)(start*this->ratefactor),
+					(int64_t)(sampleoffset*this->ratefactor),
+					(int64_t)(length*this->ratefactor),
 					f
 				};
 				this->regions.push_back(r);
@@ -533,9 +544,9 @@ PTFFormat::parserest(void) {
 				region_t r = {
 					name,
 					rindex,
-					start,
-					sampleoffset,
-					length,
+					(int64_t)(start*this->ratefactor),
+					(int64_t)(sampleoffset*this->ratefactor),
+					(int64_t)(length*this->ratefactor),
 					f
 				};
 				this->regions.push_back(r);
@@ -612,8 +623,8 @@ PTFFormat::parserest(void) {
 					if ((found = std::find(begin, finish, tr.reg)) != finish) {
 						tr.reg = (*found);
 					}
-					startbytes = (ptfunxored[l+3] & 0xf0) >> 4;
-
+					//startbytes = (ptfunxored[l+3] & 0xf0) >> 4;
+					startbytes = 4;
 					i = l+16;
 					offset = 0;
 					switch (startbytes) {
@@ -628,7 +639,7 @@ PTFFormat::parserest(void) {
 					default:
 						break;
 					}
-					tr.reg.startpos = (int64_t)offset;
+					tr.reg.startpos = (int64_t)(offset*this->ratefactor);
 					if (tr.reg.length > 0) {
 						this->tracks.push_back(tr);
 					}
diff --git a/ptfformat.h b/ptfformat.h
index 0f60dc3..394b727 100644
--- a/ptfformat.h
+++ b/ptfformat.h
@@ -28,7 +28,7 @@ public:
 	/* Return values:	0            success
 				-1           could not open file as ptf
 	*/
-	int load(std::string path);
+	int load(std::string path, int64_t targetsr);
 
 	typedef struct wav {
 		std::string filename;
@@ -110,7 +110,8 @@ public:
 		return false;
 	}
 
-	uint32_t sessionrate;
+	int64_t sessionrate;
+	int64_t targetrate;
 	uint8_t version;
 
 	unsigned char c0;
@@ -121,10 +122,12 @@ public:
 private:
 	bool foundin(std::string haystack, std::string needle);
 	void parse(void);
+	void setrates(void);
 	void parse8header(void);
 	void parse9header(void);
 	void parserest(void);
 	std::vector<wav_t> actualwavs;
+	float ratefactor;
 };
 
 
diff --git a/ptftool.cc b/ptftool.cc
index b99a38a..55a19d8 100644
--- a/ptftool.cc
+++ b/ptftool.cc
@@ -28,7 +28,7 @@ int main (int argc, char **argv) {
 		exit(0);
 	}
 
-	ok = ptf.load(argv[1]);
+	ok = ptf.load(argv[1], 48000);
 
 	switch (ok) {
 	case -1:
@@ -36,7 +36,7 @@ int main (int argc, char **argv) {
 		exit(-1);
 		break;
 	case 0:
-		printf("ProTools %d Session: Samplerate = %dHz\n\n", ptf.version, ptf.sessionrate);
+		printf("ProTools %d Session: Samplerate = %ldHz\nTarget samplerate = 48000\n\n", ptf.version, ptf.sessionrate);
 		if (ptf.audiofiles.size() > 0) {
 			printf("%lu wavs, %lu regions, %lu active regions\n\n",
 				ptf.audiofiles.size(),
diff --git a/ptunxor.cc b/ptunxor.cc
index 584c04a..99a2b26 100644
--- a/ptunxor.cc
+++ b/ptunxor.cc
@@ -21,7 +21,7 @@ int main(int argc, char** argv) {
 	int i, li;
 	PTFFormat ptf;
 
-	if (argc < 2 || ptf.load(argv[1]) == -1) {
+	if (argc < 2 || ptf.load(argv[1], 48000) == -1) {
 		fprintf(stderr, "Can't open ptf file, quit\n");
 		exit(1);
 	}
-- 
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