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-rw-r--r--src/DabMod.cpp50
1 files changed, 36 insertions, 14 deletions
diff --git a/src/DabMod.cpp b/src/DabMod.cpp
index 06d1254..82f03e5 100644
--- a/src/DabMod.cpp
+++ b/src/DabMod.cpp
@@ -35,6 +35,7 @@
#include "DabModulator.h"
#include "InputMemory.h"
#include "OutputFile.h"
+#include "FormatConverter.h"
#if defined(HAVE_OUTPUT_UHD)
# include "OutputUHD.h"
#endif
@@ -176,6 +177,7 @@ int main(int argc, char* argv[])
std::string outputName;
int useZeroMQOutput = 0;
int useFileOutput = 0;
+ std::string fileOutputFormat = "complexf";
int useUHDOutput = 0;
uint64_t frame = 0;
@@ -187,6 +189,17 @@ int main(int argc, char* argv[])
GainMode gainMode = GAIN_VAR;
Buffer data;
+
+ /* UHD requires the input I and Q samples to be in the interval
+ * [-1.0,1.0], otherwise they get truncated, which creates very
+ * wide-spectrum spikes. Depending on the Transmission Mode, the
+ * Gain Mode and the sample rate (and maybe other parameters), the
+ * samples can have peaks up to about 48000. The value of 50000
+ * should guarantee that with a digital gain of 1.0, UHD never clips
+ * our samples.
+ */
+ const float normalise_factor = 50000.0f;
+
std::string filterTapsFilename = "";
// Two configuration sources exist: command line and (new) INI file
@@ -207,6 +220,7 @@ int main(int argc, char* argv[])
Flowgraph* flowgraph = NULL;
DabModulator* modulator = NULL;
InputMemory* input = NULL;
+ FormatConverter* format_converter = NULL;
ModOutput* output = NULL;
RemoteControllers rcs;
@@ -498,6 +512,8 @@ int main(int argc, char* argv[])
goto END_MAIN;
}
useFileOutput = 1;
+
+ fileOutputFormat = pt.get("fileoutput.format", fileOutputFormat);
}
#if defined(HAVE_OUTPUT_UHD)
else if (output_selected == "uhd") {
@@ -761,23 +777,23 @@ int main(int argc, char* argv[])
goto END_MAIN;
}
-
if (useFileOutput) {
- // Opening COFDM output file
- output = new OutputFile(outputName);
+ if (fileOutputFormat == "complexf") {
+ output = new OutputFile(outputName);
+ }
+ else if (fileOutputFormat == "s8") {
+ // We must normalise the samples to the interval [-127.0; 127.0]
+ normalise = 127.0f / normalise_factor;
+
+ format_converter = new FormatConverter();
+
+ output = new OutputFile(outputName);
+ }
}
#if defined(HAVE_OUTPUT_UHD)
else if (useUHDOutput) {
- /* UHD requires the input I and Q samples to be in the interval
- * [-1.0,1.0], otherwise they get truncated, which creates very
- * wide-spectrum spikes. Depending on the Transmission Mode, the
- * Gain Mode and the sample rate (and maybe other parameters), the
- * samples can have peaks up to about 48000. The value of 50000
- * should guarantee that with a digital gain of 1.0, UHD never clips
- * our samples.
- */
- normalise = 1.0f/50000.0f;
+ normalise = 1.0f / normalise_factor;
outputuhd_conf.sampleRate = outputRate;
try {
@@ -793,7 +809,7 @@ int main(int argc, char* argv[])
#if defined(HAVE_ZEROMQ)
else if (useZeroMQOutput) {
/* We normalise the same way as for the UHD output */
- normalise = 1.0f/50000.0f;
+ normalise = 1.0f / normalise_factor;
output = new OutputZeroMQ(outputName);
}
@@ -805,7 +821,13 @@ int main(int argc, char* argv[])
modulator = new DabModulator(modconf, &rcs, logger, outputRate, clockRate,
dabMode, gainMode, digitalgain, normalise, filterTapsFilename);
flowgraph->connect(input, modulator);
- flowgraph->connect(modulator, output);
+ if (format_converter) {
+ flowgraph->connect(modulator, format_converter);
+ flowgraph->connect(format_converter, output);
+ }
+ else {
+ flowgraph->connect(modulator, output);
+ }
#if defined(HAVE_OUTPUT_UHD)
if (useUHDOutput) {