void make_loop(int n, int* last_pipe, char* grammar) {
/* last_pipe[0] = input of the recently created pipe *
* last_pipe[1] = output of the first pipe */
pid_t pid;
if (n == 1) {
prepare_input(last_pipe);
prepare_output(last_pipe);
close_pipe(last_pipe);
return;
}
int next_pipe[2];
create_pipe(next_pipe);
switch (pid = fork()) {
case -1:
syserr("Error in fork()\n");
case 0:
prepare_input(last_pipe);
close_pipe(last_pipe);
prepare_output(next_pipe);
close_pipe(next_pipe);
execl("./worker", "./worker", grammar, NULL);
syserr("Error in execl()\n");
default:
last_pipe[0] = next_pipe[0];
make_loop(n - 1, last_pipe, grammar);
return;
}
}
/*===========================================================================*
* output_done *
*===========================================================================*/
static void output_done()
{
/* Previous chunk of printing is finished. Continue if OK and more.
* Otherwise, reply to caller (FS).
*/
int status;
if (!writing) return; /* probably leftover interrupt */
if (done_status != OK) { /* printer error occurred */
status = EIO;
if ((done_status & ON_LINE) == 0) {
printf("Printer is not on line\n");
} else if ((done_status & NO_PAPER)) {
printf("Printer is out of paper\n");
status = EAGAIN;
} else {
printf("Printer error, status is 0x%02X\n", done_status);
}
/* Some characters have been printed, tell how many. */
if (status == EAGAIN && user_left < orig_count) {
status = orig_count - user_left;
}
oleft = 0; /* cancel further output */
} else if (user_left != 0) { /* not yet done, continue! */
prepare_output();
return;
} else { /* done! report back to FS */
status = orig_count;
}
chardriver_reply_task(caller, write_id, status);
writing = FALSE; /* unmark event */
}
static gboolean
read_light (gpointer user_data)
{
DrvData *data = user_data;
prepare_output (data, data->buffer_data->dev_dir_name, data->buffer_data->trigger_name);
return G_SOURCE_CONTINUE;
}
// ------------------------------------------------------------------ process --
void SpectacleBase::process(const float *buf, const int)
{
DPRINT("SpectacleBase::process");
if (_reading_input) {
prepare_input(buf);
_fft->r2c();
}
modify_analysis(_reading_input);
_fft->c2r();
prepare_output();
}
// ------------------------------------------------------------------ process --
void SPECTACLE2_BASE::process(const float *buf, const int)
{
DPRINT("SPECTACLE2_BASE::process\n");
const bool reading_input = (currentFrame() < _input_end_frame);
if (reading_input) {
DPRINT1("taking input...currentFrame()=%d\n", currentFrame());
prepare_input(buf);
_fft->r2c();
cartesian_to_polar();
}
modify_analysis(reading_input);
polar_to_cartesian();
_fft->c2r();
prepare_output();
}
/*===========================================================================*
* do_write *
*===========================================================================*/
static ssize_t printer_write(devminor_t UNUSED(minor), u64_t UNUSED(position),
endpoint_t endpt, cp_grant_id_t grant, size_t size, int flags,
cdev_id_t id)
{
/* The printer is used by sending write requests to it. Process one. */
int retries;
u32_t status;
/* Reject command if last write is not yet finished, the count is not
* positive, or we're asked not to block.
*/
if (writing) return EIO;
if (size <= 0) return EINVAL;
if (flags & CDEV_NONBLOCK) return EAGAIN; /* not supported */
/* If no errors occurred, continue printing with the caller.
* First wait until the printer is online to prevent stupid errors.
*/
caller = endpt;
user_left = size;
orig_count = size;
user_vir_d = 0; /* Offset. */
writing = TRUE;
grant_nr = grant;
write_id = id;
retries = MAX_ONLINE_RETRIES + 1;
while (--retries > 0) {
if (sys_inb(port_base + 1, &status) != OK) {
printf("printer: sys_inb of %x failed\n", port_base+1);
panic("sys_inb failed");
}
if (status & ON_LINE) { /* printer online! */
prepare_output();
printer_intr(0);
return EDONTREPLY; /* we may already have sent a reply */
}
micro_delay(500000); /* wait before retry */
}
/* If we reach this point, the printer was not online in time. */
done_status = status;
output_done();
return EDONTREPLY;
}
int
mxc_v4l_tvin_test(void)
{
struct v4l2_buffer capture_buf, output_buf;
v4l2_std_id id;
int i, j;
enum v4l2_buf_type type;
int total_time;
struct timeval tv_start, tv_current;
unsigned char *buf_test;
buf_test = (unsigned char *) malloc (g_frame_size);
if (prepare_output() < 0)
{
printf("prepare_output failed\n");
return TFAIL;
}
if (start_capturing() < 0)
{
printf("start_capturing failed\n");
return TFAIL;
}
for (i = 0; ; i++) {
memset(&capture_buf, 0, sizeof(capture_buf));
capture_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
capture_buf.memory = V4L2_MEMORY_MMAP;
if (ioctl(fd_capture_v4l, VIDIOC_DQBUF, &capture_buf) < 0) {
printf("VIDIOC_DQBUF failed.\n");
return TFAIL;
}
memset(&output_buf, 0, sizeof(output_buf));
output_buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
output_buf.memory = V4L2_MEMORY_MMAP;
if (i < g_output_num_buffers) {
output_buf.index = i;
if (ioctl(fd_output_v4l, VIDIOC_QUERYBUF, &output_buf) < 0)
{
printf("VIDIOC_QUERYBUF failed\n");
return TFAIL;
}
} else {
output_buf.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
output_buf.memory = V4L2_MEMORY_MMAP;
if (ioctl(fd_output_v4l, VIDIOC_DQBUF, &output_buf) < 0)
{
printf("VIDIOC_DQBUF failed !!!\n");
return TFAIL;
}
}
memcpy(buf_test, capture_buffers[capture_buf.index].start, g_frame_size);
memcpy(output_buffers[output_buf.index].start, buf_test, g_frame_size);
if (ioctl(fd_capture_v4l, VIDIOC_QBUF, &capture_buf) < 0) {
printf("VIDIOC_QBUF failed\n");
return TFAIL;
}
output_buf.timestamp.tv_sec = tv_start.tv_sec;
output_buf.timestamp.tv_usec = tv_start.tv_usec + (g_frame_period * i);
if (ioctl(fd_output_v4l, VIDIOC_QBUF, &output_buf) < 0)
{
printf("VIDIOC_QBUF failed\n");
return TFAIL;
}
if (i == 1) {
type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
if (ioctl(fd_output_v4l, VIDIOC_STREAMON, &type) < 0) {
printf("Could not start stream\n");
return TFAIL;
}
}
}
gettimeofday(&tv_current, 0);
total_time = (tv_current.tv_sec - tv_start.tv_sec) * 1000000L;
total_time += tv_current.tv_usec - tv_start.tv_usec;
printf("total time for %u frames = %u us = %lld fps\n", i, total_time, (i * 1000000ULL) / total_time);
free (buf_test);
return 0;
}
int main(int argc, char **argv)
{
int c;
int option_index = 0;
struct config *config = NULL;
config = prepare_default_config();
if (config == NULL)
return EXIT_FAILURE;
while (1) {
c = getopt_long (argc, argv, "hg:o:s:l:vc:p:f:n:r:x:y:",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'o':
if (config->output != NULL)
fclose(config->output);
config->output = prepare_output(optarg);
if (config->output == NULL)
return EXIT_FAILURE;
dprintf("user output path -> %s\n", optarg);
break;
case 's':
sscanf(optarg, "%li", &config->sleep);
dprintf("user sleep time -> %s\n", optarg);
break;
case 'l':
sscanf(optarg, "%li", &config->load);
dprintf("user load time -> %s\n", optarg);
break;
case 'c':
sscanf(optarg, "%u", &config->cpu);
dprintf("user cpu -> %s\n", optarg);
break;
case 'g':
strncpy(config->governor, optarg, 14);
dprintf("user governor -> %s\n", optarg);
break;
case 'p':
if (string_to_prio(optarg) != SCHED_ERR) {
config->prio = string_to_prio(optarg);
dprintf("user prio -> %s\n", optarg);
} else {
if (config != NULL) {
if (config->output != NULL)
fclose(config->output);
free(config);
}
usage();
}
break;
case 'n':
sscanf(optarg, "%u", &config->cycles);
dprintf("user cycles -> %s\n", optarg);
break;
case 'r':
sscanf(optarg, "%u", &config->rounds);
dprintf("user rounds -> %s\n", optarg);
break;
case 'x':
sscanf(optarg, "%li", &config->load_step);
dprintf("user load_step -> %s\n", optarg);
break;
case 'y':
sscanf(optarg, "%li", &config->sleep_step);
dprintf("user sleep_step -> %s\n", optarg);
break;
case 'f':
if (prepare_config(optarg, config))
return EXIT_FAILURE;
break;
case 'v':
config->verbose = 1;
dprintf("verbose output enabled\n");
break;
case 'h':
case '?':
default:
if (config != NULL) {
if (config->output != NULL)
fclose(config->output);
free(config);
}
usage();
}
}
if (config->verbose) {
printf("starting benchmark with parameters:\n");
printf("config:\n\t"
"sleep=%li\n\t"
"load=%li\n\t"
"sleep_step=%li\n\t"
"load_step=%li\n\t"
"cpu=%u\n\t"
"cycles=%u\n\t"
"rounds=%u\n\t"
"governor=%s\n\n",
config->sleep,
config->load,
config->sleep_step,
config->load_step,
config->cpu,
config->cycles,
config->rounds,
config->governor);
}
prepare_user(config);
prepare_system(config);
start_benchmark(config);
if (config->output != stdout)
fclose(config->output);
free(config);
return EXIT_SUCCESS;
}
void streamClose(struct stream *s) {
prepare_output(s);
output(s);
json_object_put(s->json);
}
