/**
* Read a log mask from a configuration object.
*
* @param conf Log mask JSON configuration object.
* @param pmask Location for the read mask.
*
* @return Global return code.
*/
static tlog_grc
get_log_mask(struct json_object *conf, unsigned int *pmask)
{
unsigned int mask = 0;
struct json_object *obj;
assert(conf != NULL);
assert(pmask != NULL);
#define READ_ITEM(_NAME, _Name, _name) \
do { \
if (!json_object_object_get_ex(conf, #_name, &obj)) { \
fprintf(stderr, #_Name " logging flag is not specified\n"); \
return TLOG_RC_FAILURE; \
} \
mask |= json_object_get_boolean(obj) << TLOG_LOG_ITEM_##_NAME; \
} while (0)
READ_ITEM(INPUT, Input, input);
READ_ITEM(OUTPUT, Output, output);
READ_ITEM(WINDOW, Window, window);
#undef READ_ITEM
*pmask = mask;
return TLOG_RC_OK;
}
/* Reads the appropriate size of block from input. */
static bool read_timestamp_block(FILE *stream)
{
struct extended_timestamp_id0 *block = get_timestamp_block();
if (save_id0)
return READ_ITEM(stream, *block);
else
return READ_ITEM(stream, *(struct extended_timestamp *) block);
}
/* Captures open data stream to configured output file. */
static bool capture_and_save(FILE *stream)
{
return
IF_(!continuous_capture,
TEST_OK(READ_ITEM(stream, sample_count))) &&
IF_ELSE(matlab_format,
capture_matlab_data(stream),
capture_raw_data(stream));
}
/* Coordination of matlab data capture. */
static bool capture_matlab_data(FILE *stream)
{
uint64_t frames_written;
time_t local_offset = offset_matlab_times ? local_time_offset() : 0;
return
TEST_OK(READ_ITEM(stream, timestamp_header)) &&
TEST_OK_(timestamp_header.offset < timestamp_header.block_size,
"Invalid response from server") &&
write_header((uint32_t) sample_count) &&
capture_data(stream, &frames_written) &&
write_footer((uint32_t) frames_written, local_offset) &&
IF_(frames_written != sample_count,
/* For an incomplete capture, probably an interrupted continuous
* capture, we need to rewrite the header with the correct
* capture count. */
TEST_IO_(fseek(output_file, 0, SEEK_SET),
"Cannot update matlab file, file not seekable") &&
write_header((uint32_t) frames_written));
}
