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-rw-r--r--Makefile.am4
-rw-r--r--configure.ac6
-rw-r--r--src/AlsaDabplus.cpp126
-rw-r--r--src/AlsaInput.cpp8
-rw-r--r--src/AlsaInput.h3
-rw-r--r--src/SampleQueue.h6
6 files changed, 141 insertions, 12 deletions
diff --git a/Makefile.am b/Makefile.am
index 8914d87..1691a47 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -48,7 +48,9 @@ aac_enc_dabplus_zmq_SOURCES = aac-enc-dabplus-zmq.c wavreader.c
alsa_dabplus_zmq_LDADD = libfdk-aac.la -lfec -lzmq -lasound
alsa_dabplus_zmq_SOURCES = alsa-dabplus-zmq.c
-dabplus_zmq_LDADD = libfdk-aac.la -lfec -lzmq -lasound
+dabplus_zmq_LDADD = libfdk-aac.la -lfec -lzmq -lasound \
+ -lrt -lboost_thread
+
dabplus_zmq_SOURCES = src/AlsaDabplus.cpp \
src/AlsaInput.cpp \
src/AlsaInput.h \
diff --git a/configure.ac b/configure.ac
index 04252ce..39704d6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -24,6 +24,12 @@ LT_INIT
AC_CHECK_LIB([m], [sin])
+AX_BOOST_BASE([1.41.0], [], AC_MSG_ERROR([BOOST 1.41 or later is required]))
+AC_CHECK_LIB([boost_system], [main], [], [AC_MSG_ERROR([library boost_system is missing])])
+AC_CHECK_LIB([boost_thread], [main], [], [AC_MSG_ERROR([library boost_thread is missing])])
+
+AC_CHECK_LIB([rt], [clock_gettime], [], [AC_MSG_ERROR([library rt is missing])])
+
# fdk-aac-dabplus-zmq needs ZeroMQ
AC_ARG_ENABLE([zmq],
[AS_HELP_STRING([--enable-zmq], [Enable fdk-aac-dabplus-zmq with ZeroMQ output])]
diff --git a/src/AlsaDabplus.cpp b/src/AlsaDabplus.cpp
index e94f00a..758d96e 100644
--- a/src/AlsaDabplus.cpp
+++ b/src/AlsaDabplus.cpp
@@ -25,9 +25,15 @@
#include <getopt.h>
#include <cstdio>
#include <stdint.h>
+#include <time.h>
+#include <unistd.h>
#include "libAACenc/include/aacenc_lib.h"
+extern "C" {
+#include <fec.h>
+}
+
using namespace std;
void usage(const char* name) {
@@ -160,7 +166,6 @@ int main(int argc, char *argv[]) {
const int bytes_per_sample = 2;
void *rs_handler = NULL;
int afterburner = 0;
- HANDLE_AACENCODER handle;
AACENC_InfoStruct info = { 0 };
const struct option longopts[] = {
@@ -227,7 +232,7 @@ int main(int argc, char *argv[]) {
return 2;
}
- if (aacEncInfo(handle, &info) != AACENC_OK) {
+ if (aacEncInfo(encoder, &info) != AACENC_OK) {
fprintf(stderr, "Unable to get the encoder info\n");
return 1;
}
@@ -249,4 +254,121 @@ int main(int argc, char *argv[]) {
return 1;
}
+ fprintf(stderr, "Start ALSA capture thread\n");
+ alsa_in.start();
+
+ fprintf(stderr, "Starting queue preroll\n");
+ // Preroll until queue full
+ while (queue.size() < input_size) {
+ usleep(1000);
+ }
+
+ int outbuf_size = subchannel_index*120;
+ uint8_t outbuf[20480];
+
+ if(outbuf_size % 5 != 0) {
+ fprintf(stderr, "(outbuf_size mod 5) = %d\n", outbuf_size % 5);
+ }
+
+ fprintf(stderr, "Starting encoding\n");
+
+ int send_error_count = 0;
+ struct timespec tp;
+ clock_gettime(CLOCK_MONOTONIC, &tp);
+
+ while (1) {
+ int in_identifier = IN_AUDIO_DATA;
+ int out_identifier = OUT_BITSTREAM_DATA;
+
+ AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
+ AACENC_InArgs in_args = { 0 };
+ AACENC_OutArgs out_args = { 0 };
+ void *in_ptr, *out_ptr;
+ int in_size, in_elem_size;
+ int out_size, out_elem_size;
+
+ memset(outbuf, 0x00, outbuf_size);
+
+ int read = queue.pop(input_buf, input_size);
+
+ if (read != input_size) {
+ fprintf(stderr, "Short read\n");
+ }
+
+ // -------------- AAC Encoding
+
+ in_ptr = input_buf;
+ in_size = input_size;
+ in_elem_size = BYTES_PER_SAMPLE;
+ in_args.numInSamples = input_size;
+ in_buf.numBufs = 1;
+ in_buf.bufs = &in_ptr;
+ in_buf.bufferIdentifiers = &in_identifier;
+ in_buf.bufSizes = &in_size;
+ in_buf.bufElSizes = &in_elem_size;
+
+ out_ptr = outbuf;
+ out_size = sizeof(outbuf);
+ out_elem_size = 1;
+ out_buf.numBufs = 1;
+ out_buf.bufs = &out_ptr;
+ out_buf.bufferIdentifiers = &out_identifier;
+ out_buf.bufSizes = &out_size;
+ out_buf.bufElSizes = &out_elem_size;
+
+ if ((err = aacEncEncode(encoder, &in_buf, &out_buf, &in_args, &out_args))
+ != AACENC_OK) {
+ if (err == AACENC_ENCODE_EOF)
+ break;
+ fprintf(stderr, "Encoding failed\n");
+ break;
+ }
+ if (out_args.numOutBytes == 0)
+ continue;
+
+ // ----------- RS encoding
+ int row, col;
+ unsigned char buf_to_rs_enc[110];
+ unsigned char rs_enc[10];
+ for(row=0; row < subchannel_index; row++) {
+ for(col=0;col < 110; col++) {
+ buf_to_rs_enc[col] = outbuf[subchannel_index * col + row];
+ }
+
+ encode_rs_char(rs_handler, buf_to_rs_enc, rs_enc);
+
+ for(col=110; col<120; col++) {
+ outbuf[subchannel_index * col + row] = rs_enc[col-110];
+ assert(subchannel_index * col + row < outbuf_size);
+ }
+ }
+
+ // ------------ ZeroMQ transmit
+ try {
+ zmq_sock.send(outbuf, outbuf_size, ZMQ_DONTWAIT);
+ }
+ catch (zmq::error_t& e) {
+ fprintf(stderr, "ZeroMQ send error !\n");
+ send_error_count ++;
+ }
+
+ if (send_error_count > 10)
+ {
+ fprintf(stderr, "ZeroMQ send failed ten times, aborting!\n");
+ break;
+ }
+
+ if (out_args.numOutBytes + row*10 == outbuf_size)
+ fprintf(stderr, ".");
+
+ // -------------- wait 120ms (one DAB+ superframe)
+
+ }
+
+ zmq_sock.close();
+ free_rs_char(rs_handler);
+
+ aacEncClose(&encoder);
+
+}
diff --git a/src/AlsaInput.cpp b/src/AlsaInput.cpp
index 4c141a1..fd1feec 100644
--- a/src/AlsaInput.cpp
+++ b/src/AlsaInput.cpp
@@ -18,12 +18,12 @@
*/
#include <cstdio>
-#include <cstdint>
#include <string>
#include <alsa/asoundlib.h>
#include "AlsaInput.h"
+#include <sys/time.h>
using namespace std;
@@ -36,10 +36,10 @@ int AlsaInput::prepare()
const int open_mode = 0; //|= SND_PCM_NONBLOCK;
- if ((err = snd_pcm_open(&m_alsa_handle, alsa_dev,
+ if ((err = snd_pcm_open(&m_alsa_handle, m_alsa_dev.c_str(),
SND_PCM_STREAM_CAPTURE, open_mode)) < 0) {
fprintf (stderr, "cannot open audio device %s (%s)\n",
- alsa_dev, snd_strerror(err));
+ m_alsa_dev.c_str(), snd_strerror(err));
return 1;
}
@@ -121,7 +121,7 @@ size_t AlsaInput::read(uint8_t* buf, snd_pcm_uframes_t length)
return err;
}
-int AlsaInput::start()
+void AlsaInput::start()
{
m_running = true;
m_thread = boost::thread(&AlsaInput::process, this);
diff --git a/src/AlsaInput.h b/src/AlsaInput.h
index b43ad7d..c1e3e9b 100644
--- a/src/AlsaInput.h
+++ b/src/AlsaInput.h
@@ -20,7 +20,6 @@
#ifndef __ALSA_H_
#define __ALSA_H_
#include <cstdio>
-#include <stdint.h>
#include <string>
#include <alsa/asoundlib.h>
@@ -66,7 +65,7 @@ class AlsaInput
int prepare();
- int start();
+ void start();
private:
AlsaInput(const AlsaInput& other) : m_queue(other.m_queue) {}
diff --git a/src/SampleQueue.h b/src/SampleQueue.h
index fddc3a4..d00b8f9 100644
--- a/src/SampleQueue.h
+++ b/src/SampleQueue.h
@@ -52,10 +52,10 @@ public:
return new_size;
}
- bool empty() const
+ size_t size() const
{
boost::mutex::scoped_lock lock(m_mutex);
- return m_queue.empty();
+ return m_queue.size();
}
/* Get len elements, place them into the buf array
@@ -89,7 +89,7 @@ public:
ret = len;
- m_queue.erase(m_queue.front(), m_queue.front() + len);
+ m_queue.erase(m_queue.begin(), m_queue.begin() + len);
}
return ret;
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-21 17:27:30 +0000