freetdm: apply gain before dumping to file

libs/freetdm/src/ftdm_io.c

@@ -3565,6 +3565,14 @@ static FIO_READ_FUNCTION(ftdm_raw_read)
 	ftdm_status_t  status = ftdmchan->fio->read(ftdmchan, data, datalen);
 	if (status == FTDM_SUCCESS && ftdmchan->fds[FTDM_READ_TRACE_INDEX] > -1) {
 		ftdm_size_t dlen = *datalen;
+		if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_USE_RX_GAIN) 
+			&& (ftdmchan->native_codec == FTDM_CODEC_ALAW || ftdmchan->native_codec == FTDM_CODEC_ULAW)) {
+			int i = 0;
+			unsigned char *rdata = data;
+			for (i = 0; i < *datalen; i++) {
+				rdata[i] = ftdmchan->rxgain_table[rdata[i]];
+			}
+		}
 		if ((ftdm_size_t)write(ftdmchan->fds[FTDM_READ_TRACE_INDEX], data, (int)dlen) != dlen) {
 			ftdm_log(FTDM_LOG_WARNING, "Raw input trace failed to write all of the %"FTDM_SIZE_FMT" bytes\n", dlen);
 		}
@@ -3730,7 +3738,6 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_read(ftdm_channel_t *ftdmchan, void *data
 	ftdm_status_t status = FTDM_FAIL;
 	fio_codec_t codec_func = NULL;
 	ftdm_size_t max = *datalen;
-	unsigned i = 0;
 
 	ftdm_assert_return(ftdmchan != NULL, FTDM_FAIL, "ftdmchan is null\n");
 	ftdm_assert_return(ftdmchan->fio != NULL, FTDM_FAIL, "No I/O module attached to ftdmchan\n");
@@ -3769,13 +3776,6 @@ FT_DECLARE(ftdm_status_t) ftdm_channel_read(ftdm_channel_t *ftdmchan, void *data
 		goto done;
 	}
 
-	if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_USE_RX_GAIN) 
-		&& (ftdmchan->native_codec == FTDM_CODEC_ALAW || ftdmchan->native_codec == FTDM_CODEC_ULAW)) {
-		unsigned char *rdata = data;
-		for (i = 0; i < *datalen; i++) {
-			rdata[i] = ftdmchan->rxgain_table[rdata[i]];
-		}
-	}
 	handle_tone_generation(ftdmchan);
 
 	if (ftdm_test_flag(ftdmchan, FTDM_CHANNEL_TRANSCODE) && ftdmchan->effective_codec != ftdmchan->native_codec) {