Stdin read ready

README.md

@@ -13,17 +13,16 @@ Then you can use it by typing:
 sudo ./fm_transmitter [filename] [frequency]
 ```
 
-Like:
+You can open WAVE files or read audio data from stdin, i.e.:
 ```
-sudo ./fm_transmitter star_wars.wav 100.0
+sox star_wars.wav -r 8000 -c 1 -b 8 -t wav - | sudo ./fm_transmitter - 100.0
 ```
 
-You can open WAVE files.
-
 Please keep in mind that transmitting on certain frequencies without special permissions may be illegal in your country.
 
 ## New features
 
 * works both on RPi 1 and RPi 2
 * reads mono and stereo files
+* reads data from stdin
 * based on threads

fm_transmitter.depend

@@ -4,12 +4,12 @@
 	"transmitter.h"
 	<cstdlib>
 
-1438126479 /home/pi/Projects/fm_transmitter/transmitter.h
+1438126951 /home/pi/Projects/fm_transmitter/transmitter.h
 	"wave_reader.h"
 	"stdin_reader.h"
 	"error_reporter.h"
 
-1437599898 source:/home/pi/Projects/fm_transmitter/transmitter.cpp
+1438244712 source:/home/pi/Projects/fm_transmitter/transmitter.cpp
 	"transmitter.h"
 	<exception>
 	<sstream>
@@ -256,13 +256,13 @@
 	<sstream>
 	<unistd.h>
 
-1438122736 /home/pi/Projects/fm_transmitter/stdin_reader.h
+1438246503 /home/pi/Projects/fm_transmitter/stdin_reader.h
 	<vector>
 	<fcntl.h>
 	"audio_format.h"
 	"error_reporter.h"
 
-1438122736 source:/home/pi/Projects/fm_transmitter/stdin_reader.cpp
+1438245689 source:/home/pi/Projects/fm_transmitter/stdin_reader.cpp
 	"stdin_reader.h"
 	<exception>
 	<sstream>

fm_transmitter.layout

@@ -10,10 +10,10 @@
 	<File name="stdin_reader.cpp" open="1" top="0" tabpos="2">
 		<Cursor position="1771" topLine="33" />
 	</File>
-	<File name="stdin_reader.h" open="1" top="0" tabpos="3">
-		<Cursor position="1902" topLine="35" />
+	<File name="stdin_reader.h" open="1" top="1" tabpos="3">
+		<Cursor position="1902" topLine="31" />
 	</File>
-	<File name="transmitter.cpp" open="1" top="1" tabpos="4">
+	<File name="transmitter.cpp" open="1" top="0" tabpos="4">
 		<Cursor position="4471" topLine="23" />
 	</File>
 	<File name="transmitter.h" open="0" top="0" tabpos="3">

stdin_reader.cpp

@@ -36,8 +36,6 @@
 #include <sstream>
 #include <unistd.h>
 
-#include <iostream>
-
 using std::exception;
 using std::ostringstream;
 

stdin_reader.h

@@ -39,9 +39,9 @@
 #include "audio_format.h"
 #include "error_reporter.h"
 
-#define BUFFER_SIZE 128
-#define SAMPLE_RATE 22050
-#define BITS_PER_SAMPLE 16
+#define BUFFER_SIZE 1024
+#define SAMPLE_RATE 8000
+#define BITS_PER_SAMPLE 8
 #define CHANNELS 1
 
 using std::vector;