From d85f07f25c1047afbfcdd5c0857587bcd8eed39e Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Tue, 28 Feb 2012 03:14:52 +0100
Subject: add (broken) isochronous support...

---
 usb-benchmark-project/host/Makefile    |  2 +-
 usb-benchmark-project/host/benchmark.c | 45 +++++++++++++++++++++++++++-------
 2 files changed, 37 insertions(+), 10 deletions(-)

diff --git a/usb-benchmark-project/host/Makefile b/usb-benchmark-project/host/Makefile
index 76f9bfd..d488672 100644
--- a/usb-benchmark-project/host/Makefile
+++ b/usb-benchmark-project/host/Makefile
@@ -1,3 +1,3 @@
 
 benchmark: benchmark.o
-	$(CC) $(LDLAGS) -lusb-1.0 -o $@ $^
+	$(CC) $(LDLAGS) -losmocore -lusb-1.0 -o $@ $^
diff --git a/usb-benchmark-project/host/benchmark.c b/usb-benchmark-project/host/benchmark.c
index 6a1060a..74959f7 100644
--- a/usb-benchmark-project/host/benchmark.c
+++ b/usb-benchmark-project/host/benchmark.c
@@ -7,12 +7,15 @@
 #include <signal.h>
 
 #include <libusb-1.0/libusb.h>
+#include <osmocom/core/utils.h>
+
 
 #define EP_DATA_IN	0x82
+#define EP_ISO_IN	0x86
 
 static struct libusb_device_handle *devh = NULL;
 
-static unsigned int num_bytes = 0, num_xfer = 0;
+static unsigned long num_bytes = 0, num_xfer = 0;
 static struct timeval tv_start;
 
 static void cb_xfr(struct libusb_transfer *xfr)
@@ -23,8 +26,23 @@ static void cb_xfr(struct libusb_transfer *xfr)
 		exit(3);
 	}
 
-	//printf("length:%u, actual_length:%u\n", xfr->length, xfr->actual_length);
-	num_bytes += xfr->length;
+	if (xfr->type == LIBUSB_TRANSFER_TYPE_ISOCHRONOUS) {
+		int i;
+		for (i = 0; i < xfr->num_iso_packets; i++) {
+			struct libusb_iso_packet_descriptor *pack = &xfr->iso_packet_desc[i];
+
+			if (pack->status != LIBUSB_TRANSFER_COMPLETED) {
+				fprintf(stderr, "Error: pack %u status %d\n", i, pack->status);
+				exit(5);
+			}
+
+			printf("pack%u length:%u, actual_length:%u\n", i, pack->length, pack->actual_length);
+		}
+	}
+
+	printf("length:%u, actual_length:%u\n", xfr->length, xfr->actual_length);
+	printf("%s\n", osmo_hexdump(xfr->buffer, xfr->actual_length));
+	num_bytes += xfr->actual_length;
 	num_xfer++;
 
 	if (libusb_submit_transfer(xfr) < 0) {
@@ -34,16 +52,25 @@ static void cb_xfr(struct libusb_transfer *xfr)
 
 }
 
-static int benchmark_in(void)
+static int benchmark_in(uint8_t ep)
 {
 	static uint8_t buf[2048];
 	static struct libusb_transfer *xfr;
+	int num_iso_pack = 0;
+
+	if (ep == EP_ISO_IN)
+		num_iso_pack = 16;
 
-	xfr = libusb_alloc_transfer(0);
+	xfr = libusb_alloc_transfer(num_iso_pack);
 	if (!xfr)
 		return -ENOMEM;
 
-	libusb_fill_bulk_transfer(xfr, devh, EP_DATA_IN, buf,
+	if (ep == EP_ISO_IN) {
+		libusb_fill_iso_transfer(xfr, devh, ep, buf,
+				sizeof(buf), num_iso_pack, cb_xfr, NULL, 0);
+		libusb_set_iso_packet_lengths(xfr, sizeof(buf)/num_iso_pack);
+	} else
+		libusb_fill_bulk_transfer(xfr, devh, ep, buf,
 				sizeof(buf), cb_xfr, NULL, 0);
 
 	gettimeofday(&tv_start, NULL);
@@ -60,7 +87,7 @@ static void measure(void)
 	diff_msec = (tv_stop.tv_sec - tv_start.tv_sec)*1000;
 	diff_msec += (tv_stop.tv_usec - tv_start.tv_usec)/1000;
 
-	printf("%u transfers (total %u bytes) in %u miliseconds => %u bytes/sec\n",
+	printf("%u transfers (total %u bytes) in %u miliseconds => %lu bytes/sec\n",
 		num_xfer, num_bytes, diff_msec, (num_bytes*1000)/diff_msec);
 }
 
@@ -92,13 +119,13 @@ int main(int argc, char **argv)
 		exit(1);
 	}
 
-	rc = libusb_claim_interface(devh, 0);
+	rc = libusb_claim_interface(devh, 2);
 	if (rc < 0) {
 		fprintf(stderr, "Error claiming interface\n");
 		exit(1);
 	}
 
-	benchmark_in();
+	benchmark_in(EP_ISO_IN);
 
 	while (1) {
 		libusb_handle_events(NULL);
-- 
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