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fx2lafw: Moved num_samples into context struct

This commit is contained in:
Joel Holdsworth 2012-03-03 15:22:51 +00:00
parent 266784d594
commit 2e526f4a6a
2 changed files with 28 additions and 20 deletions
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46
hardware/fx2lafw/fx2lafw.c
View File

@ -506,26 +506,33 @@ static int receive_data(int fd, int revents, void *cb_data)
return TRUE; return TRUE;
} }
static void abort_acquisition(struct context *ctx)
{
struct sr_datafeed_packet packet;
packet.type = SR_DF_END;
sr_session_send(ctx->session_dev_id, &packet);
ctx->num_samples = -1;
/* TODO: Need to cancel and free any queued up transfers. */
}
static void receive_transfer(struct libusb_transfer *transfer) static void receive_transfer(struct libusb_transfer *transfer)
{ {
/* TODO: These statics have to move to the ctx struct. */ /* TODO: These statics have to move to the ctx struct. */
static int num_samples = 0;
static int empty_transfer_count = 0; static int empty_transfer_count = 0;
struct sr_datafeed_packet packet; struct sr_datafeed_packet packet;
struct sr_datafeed_logic logic; struct sr_datafeed_logic logic;
struct context *ctx; struct context *ctx = transfer->user_data;
int cur_buflen; int cur_buflen;
unsigned char *cur_buf, *new_buf; unsigned char *cur_buf, *new_buf;
/* hw_dev_acquisition_stop() is telling us to stop. */
if (transfer == NULL)
num_samples = -1;
/* /*
* If acquisition has already ended, just free any queued up * If acquisition has already ended, just free any queued up
* transfer that come in. * transfer that come in.
*/ */
if (num_samples == -1) { if (ctx->num_samples == -1) {
if (transfer) if (transfer)
libusb_free_transfer(transfer); libusb_free_transfer(transfer);
return; return;
@ -560,7 +567,7 @@ static void receive_transfer(struct libusb_transfer *transfer)
* The FX2 gave up. End the acquisition, the frontend * The FX2 gave up. End the acquisition, the frontend
* will work out that the samplecount is short. * will work out that the samplecount is short.
*/ */
hw_dev_acquisition_stop(-1, ctx->session_dev_id); abort_acquisition(ctx);
} }
return; return;
} else { } else {
@ -576,10 +583,10 @@ static void receive_transfer(struct libusb_transfer *transfer)
sr_session_send(ctx->session_dev_id, &packet); sr_session_send(ctx->session_dev_id, &packet);
g_free(cur_buf); g_free(cur_buf);
num_samples += cur_buflen; ctx->num_samples += cur_buflen;
if (ctx->limit_samples && if (ctx->limit_samples &&
(unsigned int) num_samples > ctx->limit_samples) { (unsigned int) ctx->num_samples > ctx->limit_samples) {
hw_dev_acquisition_stop(-1, ctx->session_dev_id); abort_acquisition(ctx);
} }
} }
@ -598,6 +605,7 @@ static int hw_dev_acquisition_start(int dev_index, void *cb_data)
return SR_ERR; return SR_ERR;
ctx = sdi->priv; ctx = sdi->priv;
ctx->session_dev_id = cb_data; ctx->session_dev_id = cb_data;
ctx->num_samples = 0;
if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) { if (!(packet = g_try_malloc(sizeof(struct sr_datafeed_packet)))) {
sr_err("fx2lafw: %s: packet malloc failed", __func__); sr_err("fx2lafw: %s: packet malloc failed", __func__);
@ -655,17 +663,15 @@ static int hw_dev_acquisition_start(int dev_index, void *cb_data)
/* TODO: This stops acquisition on ALL devices, ignoring dev_index. */ /* TODO: This stops acquisition on ALL devices, ignoring dev_index. */
static int hw_dev_acquisition_stop(int dev_index, void *cb_data) static int hw_dev_acquisition_stop(int dev_index, void *cb_data)
{ {
struct sr_datafeed_packet packet; struct sr_dev_inst *sdi;
/* Avoid compiler warnings. */ /* unused parameter */
(void)dev_index; (void)cb_data;
packet.type = SR_DF_END; if (!(sdi = sr_dev_inst_get(dev_insts, dev_index)))
sr_session_send(cb_data, &packet); return SR_ERR;
receive_transfer(NULL); abort_acquisition(sdi->priv);
/* TODO: Need to cancel and free any queued up transfers. */
return SR_OK; return SR_OK;
} }

2
hardware/fx2lafw/fx2lafw.h
View File

@ -55,6 +55,8 @@ struct context {
uint64_t cur_samplerate; uint64_t cur_samplerate;
uint64_t limit_samples; uint64_t limit_samples;
int num_samples;
void *session_dev_id; void *session_dev_id;
struct sr_usb_dev_inst *usb; struct sr_usb_dev_inst *usb;