diff options
Diffstat (limited to 'demo/freedv_700d_tx.c')
| -rw-r--r-- | demo/freedv_700d_tx.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/demo/freedv_700d_tx.c b/demo/freedv_700d_tx.c index d678905..4c22594 100644 --- a/demo/freedv_700d_tx.c +++ b/demo/freedv_700d_tx.c @@ -5,16 +5,17 @@ DATE CREATED: April 2021 Demo transmit program using the FreeDV API (700D mode). - + usage: - + cd ~/codec2/build_linux - cat ../raw/ve9qrp_10s.raw | ./demo/freedv_700d_tx | ./demo/freedv_700d_rx | aplay -f S16_LE + cat ../raw/ve9qrp_10s.raw | ./demo/freedv_700d_tx | ./demo/freedv_700d_rx | +aplay -f S16_LE Listen to the modulated Tx signal: - + cat ../raw/ve9qrp_10s.raw | ./demo/freedv_700d_tx | aplay -f S16_LE - + \*---------------------------------------------------------------------------*/ /* @@ -35,32 +36,33 @@ */ #include <assert.h> -#include <stdlib.h> #include <stdio.h> +#include <stdlib.h> #include <string.h> #include "freedv_api.h" int main(int argc, char *argv[]) { - struct freedv *freedv; + struct freedv *freedv; - freedv = freedv_open(FREEDV_MODE_700D); - assert(freedv != NULL); + freedv = freedv_open(FREEDV_MODE_700D); + assert(freedv != NULL); - /* handy functions to set buffer sizes */ - int n_speech_samples = freedv_get_n_speech_samples(freedv); - short speech_in[n_speech_samples]; - int n_nom_modem_samples = freedv_get_n_nom_modem_samples(freedv); - short mod_out[n_nom_modem_samples]; + /* handy functions to set buffer sizes */ + int n_speech_samples = freedv_get_n_speech_samples(freedv); + short speech_in[n_speech_samples]; + int n_nom_modem_samples = freedv_get_n_nom_modem_samples(freedv); + short mod_out[n_nom_modem_samples]; - /* OK main loop --------------------------------------- */ + /* OK main loop --------------------------------------- */ - while(fread(speech_in, sizeof(short), n_speech_samples, stdin) == n_speech_samples) { - freedv_tx(freedv, mod_out, speech_in); - fwrite(mod_out, sizeof(short), n_nom_modem_samples, stdout); - } + while (fread(speech_in, sizeof(short), n_speech_samples, stdin) == + n_speech_samples) { + freedv_tx(freedv, mod_out, speech_in); + fwrite(mod_out, sizeof(short), n_nom_modem_samples, stdout); + } - freedv_close(freedv); + freedv_close(freedv); - return 0; + return 0; } |