From 2c70ffa4e72d678fa5653e6d014abc6cbc5b9989 Mon Sep 17 00:00:00 2001
From: "B. Watson" <yalhcru@gmail.com>
Date: Wed, 6 May 2020 23:57:38 -0400
Subject: initial commit

---
 Makefile       |  19 ++++++++
 miragextract.c | 134 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 153 insertions(+)
 create mode 100644 Makefile
 create mode 100644 miragextract.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..6e9e402
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,19 @@
+PROJ=miragextract
+
+# Packagers: override these on make command line as needed.
+OPTFLAGS=-O2
+LDEXTRA=
+
+SNDFILE_CFLAGS:=$(shell pkg-config --cflags sndfile)
+SNDFILE_LIBS:=$(shell pkg-config --libs sndfile)
+
+MIRAGE_CFLAGS:=$(shell pkg-config --cflags libmirage)
+MIRAGE_LIBS:=$(shell pkg-config --libs libmirage)
+
+CFLAGS=-Wall $(OPTFLAGS) $(MIRAGE_CFLAGS) $(SNDFILE_CFLAGS)
+LDFLAGS=$(LDEXTRA) $(MIRAGE_LIBS) $(SNDFILE_LIBS)
+
+all: $(PROJ)
+
+test: all
+	./$(PROJ)
diff --git a/miragextract.c b/miragextract.c
new file mode 100644
index 0000000..2c16132
--- /dev/null
+++ b/miragextract.c
@@ -0,0 +1,134 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sndfile.h>
+#include <mirage/mirage.h>
+
+const char *self;
+
+static MirageContext *mirage = NULL;
+static MirageDisc *disc = NULL;
+static MirageSession *session = NULL;
+static int output_track_number = 0;
+// static int tracks;
+
+void die(char *msg) {
+	fprintf(stderr, "%s: %s\n", self, msg);
+	exit(1);
+}
+
+void extract_audio(MirageTrack *track) {
+}
+
+void extract_track(int t) {
+	MirageTrack *track;
+	MirageSector *sector;
+	int sector_type, sec = 0;
+	gint len;
+	const guint8 *buf;
+	char *ext;
+	char outfile[4096];
+	FILE *out;
+	SNDFILE *sfout;
+	struct SF_INFO sfi;
+	double quality = 0.7l;
+
+	output_track_number++;
+
+	if(!(track = mirage_session_get_track_by_index(session, t, NULL)))
+		die("can't read track");
+
+	sector_type = mirage_track_get_sector_type(track);
+
+	switch(sector_type) {
+		case MIRAGE_SECTOR_MODE1:
+		case MIRAGE_SECTOR_MODE2_FORM1:
+			// printf("Track %d is data, extracting\n", output_track_number);
+			ext = "iso";
+			break;
+		case MIRAGE_SECTOR_AUDIO:
+			// printf("Track %d is audio, extracting\n", output_track_number);
+			ext = "ogg";
+			break;
+		default:
+			// printf("Track %d is unsupported type, dumping raw\n", output_track_number);
+			ext = "raw";
+			break;
+	}
+
+	sector = mirage_track_get_sector(track, 0, 0, NULL);
+
+	/*
+	mirage_sector_get_data(sector, &buf, &len, NULL);
+	printf("got %d bytes per sector\n", len);
+	*/
+
+	sprintf(outfile, "track%02d.%s", output_track_number, ext);
+
+	if(sector_type == MIRAGE_SECTOR_AUDIO) {
+		sfi.samplerate = 44100;
+		sfi.channels = 2;
+		sfi.format = SF_FORMAT_OGG | SF_FORMAT_VORBIS;
+		if(!(sfout = sf_open(outfile, SFM_WRITE, &sfi)))
+			die("can't open output audio file");
+		sf_command(sfout, SFC_SET_VBR_ENCODING_QUALITY, &quality, sizeof(double));
+	} else {
+		if(!(out = fopen(outfile, "wb"))) {
+			die("can't open output file");
+		}
+	}
+
+	sec = mirage_track_get_track_start(track);
+	while((sector = mirage_track_get_sector(track, sec++, 0, NULL))) {
+		mirage_sector_get_data(sector, &buf, &len, NULL);
+		if(sector_type == MIRAGE_SECTOR_AUDIO) {
+			/* TODO: find out what happens on big-endian platform! */
+			sf_write_short(sfout, (const short *)buf, len / 2);
+		} else {
+			fwrite(buf, len, 1, out);
+		}
+		g_object_unref(sector);
+	}
+
+	if(sector_type == MIRAGE_SECTOR_AUDIO) {
+		sf_close(sfout);
+	} else {
+		fclose(out);
+	}
+
+	printf("read %d sectors\n", sec);
+
+	return;
+}
+
+int main(int argc, char **argv) {
+	self = argv[0];
+	gchar *fn[2];
+	int s, t;
+
+	if(!((mirage = g_object_new(MIRAGE_TYPE_CONTEXT, NULL))))
+		die("couldn't get mirage context");
+
+	if(!mirage_initialize(NULL))
+		die("couldn't initialize libmirage");
+
+	fn[0] = "test.cue";
+	fn[1] = NULL;
+
+	if(!(disc = mirage_context_load_image(mirage, fn, NULL)))
+		die("couldn't load image");
+
+	for(s = 0; s < mirage_disc_get_number_of_sessions(disc); s++) {
+		if(!(session = mirage_disc_get_session_by_index(disc, s, NULL)))
+			die("couldn't read session");
+
+		for(t = 0; t < mirage_session_get_number_of_tracks(session); t++) {
+			printf("session %d, track %d\n", s, t);
+			extract_track(t);
+		}
+	}
+
+	mirage_shutdown(NULL);
+	return 0;
+}
-- 
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