shithub: zuke

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lower playlist size, separate common stuff into plist.h

--- a/LICENSE

+++ b/LICENSE

@@ -1,1 +1,1 @@

-Everything here is in the public domain.

+Public domain.

--- a/mkplist.c

+++ b/mkplist.c

@@ -1,33 +1,14 @@

 #include <u.h>

 #include <libc.h>

 #include <tags.h>

+#include "plist.h"

 enum

 {

-	Maxartist = 16, /* max artists for a track */

 	Maxname = 256+2, /* seems enough? */

 	Maxdepth = 16, /* max recursion depth */

 };

-typedef struct Meta Meta;

-

-struct Meta

-{

-	char *artist[Maxartist];

-	char *album;

-	char *title;

-	char *date;

-	char *track;

-	char *path;

-	int numartist;

-	int duration;

-	int samplerate;

-	int channels;

-	int imageoffset;

-	int imagesize;

-	int imagereader; /* non-zero if a special reader required */

-};

-

 static int fd;

 static Meta *curr;

 static Meta *all;

@@ -216,29 +197,29 @@

 	s = buf;

 	for(i = 0; i < m->numartist; i++)

-		s = seprint(s, buf+sizeof(buf), "artist %ld %s\n", strlen(m->artist[i]), m->artist[i]);

+		s = seprint(s, buf+sizeof(buf), "%c%ld %s\n", Partist, strlen(m->artist[i]), m->artist[i]);

 	if(m->album != nil)

-		s = seprint(s, buf+sizeof(buf), "album %ld %s\n", strlen(m->album), m->album);

+		s = seprint(s, buf+sizeof(buf), "%c%ld %s\n", Palbum, strlen(m->album), m->album);

 	if(m->title != nil)

-		s = seprint(s, buf+sizeof(buf), "title %ld %s\n", strlen(m->title), m->title);

+		s = seprint(s, buf+sizeof(buf), "%c%ld %s\n", Ptitle, strlen(m->title), m->title);

 	if(m->date != nil)

-		s = seprint(s, buf+sizeof(buf), "date %ld %s\n", strlen(m->date), m->date);

+		s = seprint(s, buf+sizeof(buf), "%c%ld %s\n", Pdate, strlen(m->date), m->date);

 	if(m->track != nil)

-		s = seprint(s, buf+sizeof(buf), "track %ld %s\n", strlen(m->track), m->track);

+		s = seprint(s, buf+sizeof(buf), "%c%ld %s\n", Ptrack, strlen(m->track), m->track);

 	if(m->duration > 0)

-		s = seprint(s, buf+sizeof(buf), "duration %d\n", m->duration);

+		s = seprint(s, buf+sizeof(buf), "%c %d\n", Pduration, m->duration);

 	if(m->samplerate > 0)

-		s = seprint(s, buf+sizeof(buf), "samplerate %d\n", m->samplerate);

+		s = seprint(s, buf+sizeof(buf), "%c %d\n", Psamplerate, m->samplerate);

 	if(m->channels > 0)

-		s = seprint(s, buf+sizeof(buf), "channels %d\n", m->channels);

+		s = seprint(s, buf+sizeof(buf), "%c %d\n", Pchannels, m->channels);

 	if(m->imagesize > 0)

-		s = seprint(s, buf+sizeof(buf), "image %d %d %d\n", m->imageoffset, m->imagesize, m->imagereader);

-	s = seprint(s, buf+sizeof(buf), "path %s\n", m->path);

+		s = seprint(s, buf+sizeof(buf), "%c %d %d %d\n", Pimage, m->imageoffset, m->imagesize, m->imagereader);

+	s = seprint(s, buf+sizeof(buf), "%c %s\n", Ppath, m->path);

 	if(buf[sizeof(buf)-2] != 0)

 		sysfatal("buffer size of %d bytes was a bad choice", sizeof(buf));

-	print("# %d %d\n%s", index, (int)(s-buf), buf);

+	print("%c %d %d\n%s", Precord, index, (int)(s-buf), buf);

 }

 static int

@@ -289,10 +270,14 @@

 		dir = strdup(argv[i]);

 		scan(&dir, 0);

 	}

-	if(numall > 0){

-		qsort(all, numall, sizeof(Meta), cmpmeta);

-		for(i = 0; i < numall; i++)

-			printmeta(&all[i], i);

+	qsort(all, numall, sizeof(Meta), cmpmeta);

+	print("# %d\n", numall);

+	for(i = 0; i < numall; i++){

+		if(all[i].numartist < 1)

+			fprint(2, "no artists: %s\n", all[i].path);

+		if(all[i].title == nil)

+			fprint(2, "no title: %s\n", all[i].path);

+		printmeta(&all[i], i);

 	}

 	fprint(2, "found %d tagged tracks\n", numall);

 }

--- /dev/null

+++ b/plist.h

@@ -1,0 +1,45 @@

+/* Playlist begins with "# x\n" where x is the total number of records.

+ * Each record begins with "# x y\n" where x is record index, y is its size in bytes.

+ * Records are sorted according to mkplist.c:/^cmpmeta function.

+ * This makes it somewhat easy to just load the whole playlist into memory once,

+ * map all (Meta*)->... fields to it, saving on memory allocations, and using the same

+ * data to provide poor's man full text searching.

+ * Encoding: mkplist.c:/^printmeta/.

+ * Decoding: zuke.c:/^readplist/.

+ */

+enum

+{

+	Precord='#',

+

+	Palbum=			'a',

+	Partist=		'A',

+	Pchannels=		'c',

+	Pdate=			'd',

+	Pduration=		'D',

+	Pimage=			'i',

+	Ptitle=			't',

+	Ptrack=			'T',

+	Ppath=			'p',

+	Psamplerate=	's',

+

+	Maxartist=16, /* max artists for a track */

+};

+

+typedef struct Meta Meta;

+

+struct Meta

+{

+	char *artist[Maxartist];

+	char *album;

+	char *title;

+	char *date;

+	char *track;

+	char *path;

+	int numartist;

+	int duration;

+	int samplerate;

+	int channels;

+	int imageoffset;

+	int imagesize;

+	int imagereader; /* non-zero if a special reader required */

+};