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write unsigned chars to .wav file instead of signed chars

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This commit is contained in:
Michael Ossmann
2014-03-16 10:31:17 -06:00
parent a50ecd7128
commit f61e9d2bd7
1 changed files with 7 additions and 0 deletions
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7
host/hackrf-tools/src/hackrf_transfer.c
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@ -334,6 +334,7 @@ uint32_t baseband_filter_bw_hz = 0;
int rx_callback(hackrf_transfer* transfer) { int rx_callback(hackrf_transfer* transfer) {
size_t bytes_to_write; size_t bytes_to_write;
int i;
if( fd != NULL ) if( fd != NULL )
{ {
@ -346,6 +347,12 @@ int rx_callback(hackrf_transfer* transfer) {
} }
bytes_to_xfer -= bytes_to_write; bytes_to_xfer -= bytes_to_write;
} }
if (receive_wav) {
/* convert .wav contents from signed to unsigned */
for (i = 0; i < bytes_to_write; i++) {
*(transfer->buffer + i) ^= (uint8_t)0x80;
}
}
bytes_written = fwrite(transfer->buffer, 1, bytes_to_write, fd); bytes_written = fwrite(transfer->buffer, 1, bytes_to_write, fd);
if ((bytes_written != bytes_to_write) if ((bytes_written != bytes_to_write)
|| (limit_num_samples && (bytes_to_xfer == 0))) { || (limit_num_samples && (bytes_to_xfer == 0))) {