diff options
| -rw-r--r-- | Makefile.am | 16 | ||||
| -rw-r--r-- | src/AlsaDabplus.cpp | 252 | ||||
| -rw-r--r-- | src/AlsaInput.cpp | 139 | ||||
| -rw-r--r-- | src/AlsaInput.h | 90 | ||||
| -rw-r--r-- | src/SampleQueue.h | 123 | ||||
| -rw-r--r-- | src/zmq.hpp | 566 |
6 files changed, 1184 insertions, 2 deletions
diff --git a/Makefile.am b/Makefile.am index be4e508..8914d87 100644 --- a/Makefile.am +++ b/Makefile.am @@ -12,7 +12,6 @@ AM_CPPFLAGS = \ -I$(top_srcdir)/libFDK/include \ -I$(top_srcdir)/libPCMutils/include -AM_CXXFLAGS = -fno-exceptions -fno-rtti libfdk_aac_la_LINK = $(LINK) $(libfdk_aac_la_LDFLAGS) # Mention a dummy pure C file to trigger generation of the $(LINK) variable nodist_EXTRA_libfdk_aac_la_SOURCES = dummy.c @@ -30,6 +29,7 @@ pkgconfig_DATA = fdk-aac.pc lib_LTLIBRARIES = libfdk-aac.la +libfdk_aac_la_CXXFLAGS = -fno-exceptions -fno-rtti libfdk_aac_la_LDFLAGS = -version-info @FDK_AAC_VERSION@ -no-undefined \ -export-symbols $(top_srcdir)/fdk-aac.sym @@ -48,7 +48,19 @@ aac_enc_dabplus_zmq_SOURCES = aac-enc-dabplus-zmq.c wavreader.c alsa_dabplus_zmq_LDADD = libfdk-aac.la -lfec -lzmq -lasound alsa_dabplus_zmq_SOURCES = alsa-dabplus-zmq.c -bin_PROGRAMS = aac-enc$(EXEEXT) aac-enc-dabplus$(EXEEXT) aac-enc-dabplus-zmq$(EXEEXT) alsa-dabplus-zmq$(EXEEXT) +dabplus_zmq_LDADD = libfdk-aac.la -lfec -lzmq -lasound +dabplus_zmq_SOURCES = src/AlsaDabplus.cpp \ + src/AlsaInput.cpp \ + src/AlsaInput.h \ + src/SampleQueue.h \ + src/zmq.hpp + +bin_PROGRAMS = aac-enc$(EXEEXT) \ + aac-enc-dabplus$(EXEEXT) \ + aac-enc-dabplus-zmq$(EXEEXT) \ + alsa-dabplus-zmq$(EXEEXT) \ + dabplus-zmq$(EXEEXT) + else bin_PROGRAMS = aac-enc$(EXEEXT) aac-enc-dabplus$(EXEEXT) endif diff --git a/src/AlsaDabplus.cpp b/src/AlsaDabplus.cpp new file mode 100644 index 0000000..e94f00a --- /dev/null +++ b/src/AlsaDabplus.cpp @@ -0,0 +1,252 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 2011 Martin Storsjo + * Copyright (C) 2013,2014 Matthias P. Braendli + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either + * express or implied. + * See the License for the specific language governing permissions + * and limitations under the License. + * ------------------------------------------------------------------- + */ + +#include "AlsaInput.h" +#include "SampleQueue.h" +#include "zmq.hpp" + +#include <string> +#include <getopt.h> +#include <cstdio> +#include <stdint.h> + +#include "libAACenc/include/aacenc_lib.h" + +using namespace std; + +void usage(const char* name) { + fprintf(stderr, "%s [OPTION...]\n", name); + fprintf(stderr, +" -b, --bitrate={ 8, 16, ..., 192 } Output bitrate in kbps. Must be 8 multiple.\n" +//" -d, --data=FILENAME Set data filename.\n" +//" -g, --fs-bug Turn on FS bug mitigation.\n" +//" -i, --input=FILENAME Input filename (default: stdin).\n" +" -o, --output=URI Output zmq uri. (e.g. 'tcp://*:9000')\n" +" -a, --afterburner Turn on AAC encoder quality increaser.\n" +//" -m, --message Turn on AAC frame messages.\n" +//" -p, --pad=BYTES Set PAD size in bytes.\n" +//" -f, --format={ wav, raw } Set input file format (default: wav).\n" +" -d, --device=alsa_device Set ALSA input device (default: \"default\").\n" +" -c, --channels={ 1, 2 } Nb of input channels for raw input (default: 2).\n" +" -r, --rate={ 32000, 48000 } Sample rate for raw input (default: 48000).\n" +//" -t, --type=TYPE Set data type (dls|pad|packet|dg).\n" +//" -v, --verbose=LEVEL Set verbosity level.\n" +//" -V, --version Print version and exit.\n" +//" --mi=[ 0, ... ] Set AAC frame messages interval in milliseconds.\n" +//" --ma=[ 0, ... ] Set AAC frame messages attack time in milliseconds.\n" +//" -l, --lp Set frame size to 1024 instead of 960.\n" +"\n" +"Only the tcp:// zeromq transport has been tested until now.\n" + +); + +} + +int prepare_aac_encoder( + HANDLE_AACENCODER *encoder, + int subchannel_index, + int channels, + int sample_rate, + int afterburner) +{ + HANDLE_AACENCODER handle = *encoder; + + int aot = AOT_DABPLUS_AAC_LC; + + CHANNEL_MODE mode; + switch (channels) { + case 1: mode = MODE_1; break; + case 2: mode = MODE_2; break; + default: + fprintf(stderr, "Unsupported channels number %d\n", channels); + return 1; + } + + + if (aacEncOpen(&handle, 0x01|0x02|0x04, channels) != AACENC_OK) { + fprintf(stderr, "Unable to open encoder\n"); + return 1; + } + + + if(channels == 2 && subchannel_index <= 6) + aot = AOT_DABPLUS_PS; + else if((channels == 1 && subchannel_index <= 8) || subchannel_index <= 10) + aot = AOT_DABPLUS_SBR; + + fprintf(stderr, "Using %d subchannels. AAC type: %s%s%s. channels=%d, sample_rate=%d\n", + subchannel_index, + aot == AOT_DABPLUS_PS ? "HE-AAC v2" : "", + aot == AOT_DABPLUS_SBR ? "HE-AAC" : "", + aot == AOT_DABPLUS_AAC_LC ? "AAC-LC" : "", + channels, sample_rate); + + if (aacEncoder_SetParam(handle, AACENC_AOT, aot) != AACENC_OK) { + fprintf(stderr, "Unable to set the AOT\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_SAMPLERATE, sample_rate) != AACENC_OK) { + fprintf(stderr, "Unable to set the sample rate\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_CHANNELMODE, mode) != AACENC_OK) { + fprintf(stderr, "Unable to set the channel mode\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_CHANNELORDER, 1) != AACENC_OK) { + fprintf(stderr, "Unable to set the wav channel order\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_GRANULE_LENGTH, 960) != AACENC_OK) { + fprintf(stderr, "Unable to set the granule length\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_TRANSMUX, TT_DABPLUS) != AACENC_OK) { + fprintf(stderr, "Unable to set the RAW transmux\n"); + return 1; + } + + /*if (aacEncoder_SetParam(handle, AACENC_BITRATEMODE, 7 *AACENC_BR_MODE_SFR*) + * != AACENC_OK) { + fprintf(stderr, "Unable to set the bitrate mode\n"); + return 1; + }*/ + + + fprintf(stderr, "AAC bitrate set to: %d\n", subchannel_index*8000); + if (aacEncoder_SetParam(handle, AACENC_BITRATE, subchannel_index*8000) != AACENC_OK) { + fprintf(stderr, "Unable to set the bitrate\n"); + return 1; + } + if (aacEncoder_SetParam(handle, AACENC_AFTERBURNER, afterburner) != AACENC_OK) { + fprintf(stderr, "Unable to set the afterburner mode\n"); + return 1; + } + if (aacEncEncode(handle, NULL, NULL, NULL, NULL) != AACENC_OK) { + fprintf(stderr, "Unable to initialize the encoder\n"); + return 1; + } + return 0; +} + + +#define no_argument 0 +#define required_argument 1 +#define optional_argument 2 + +int main(int argc, char *argv[]) { + int subchannel_index = 8; //64kbps subchannel + int ch=0; + int err; + const char *alsa_device = "default"; + const char *outuri = NULL; + int sample_rate=48000, channels=2; + const int bytes_per_sample = 2; + void *rs_handler = NULL; + int afterburner = 0; + HANDLE_AACENCODER handle; + AACENC_InfoStruct info = { 0 }; + + const struct option longopts[] = { + {"bitrate", required_argument, 0, 'b'}, + {"output", required_argument, 0, 'o'}, + {"device", required_argument, 0, 'd'}, + {"rate", required_argument, 0, 'r'}, + {"channels", required_argument, 0, 'c'}, + {"afterburner", no_argument, 0, 'a'}, + {"help", no_argument, 0, 'h'}, + {0,0,0,0}, + }; + + int index; + while(ch != -1) { + ch = getopt_long(argc, argv, "hab:c:o:r:d:", longopts, &index); + switch (ch) { + case 'd': + alsa_device = optarg; + break; + case 'a': + afterburner = 1; + break; + case 'b': + subchannel_index = atoi(optarg) / 8; + break; + case 'c': + channels = atoi(optarg); + break; + case 'r': + sample_rate = atoi(optarg); + break; + case 'o': + outuri = optarg; + break; + case '?': + case 'h': + usage(argv[0]); + return 1; + } + } + + if(subchannel_index < 1 || subchannel_index > 24) { + fprintf(stderr, "Bad subchannels number: %d, try other bitrate.\n", + subchannel_index); + return 1; + } + + fprintf(stderr, "Setting up ZeroMQ socket\n"); + if (!outuri) { + fprintf(stderr, "ZeroMQ output URI not defined\n"); + return 1; + } + + zmq::context_t zmq_ctx; + zmq::socket_t zmq_sock(zmq_ctx, ZMQ_PUB); + zmq_sock.connect(outuri); + + HANDLE_AACENCODER encoder; + + if (prepare_aac_encoder(&encoder, subchannel_index, channels, + sample_rate, afterburner) != 0) { + fprintf(stderr, "Encoder preparation failed\n"); + return 2; + } + + if (aacEncInfo(handle, &info) != AACENC_OK) { + fprintf(stderr, "Unable to get the encoder info\n"); + return 1; + } + + fprintf(stderr, "DAB+ Encoding: framelen=%d\n", info.frameLength); + + // Each DAB+ frame will need input_size audio bytes + int input_size = channels * bytes_per_sample * info.frameLength; + uint8_t input_buf[input_size]; + + int max_size = input_size + NUM_SAMPLES_PER_CALL; + + SampleQueue<uint8_t> queue(BYTES_PER_SAMPLE, channels, max_size); + + AlsaInput alsa_in(alsa_device, channels, sample_rate, queue); + + if (alsa_in.prepare() != 0) { + fprintf(stderr, "Alsa preparation failed\n"); + return 1; + } + + diff --git a/src/AlsaInput.cpp b/src/AlsaInput.cpp new file mode 100644 index 0000000..4c141a1 --- /dev/null +++ b/src/AlsaInput.cpp @@ -0,0 +1,139 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 2011 Martin Storsjo + * Copyright (C) 2013,2014 Matthias P. Braendli + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either + * express or implied. + * See the License for the specific language governing permissions + * and limitations under the License. + * ------------------------------------------------------------------- + */ + +#include <cstdio> +#include <cstdint> +#include <string> + +#include <alsa/asoundlib.h> + +#include "AlsaInput.h" + +using namespace std; + +int AlsaInput::prepare() +{ + int err; + snd_pcm_hw_params_t *hw_params; + + fprintf(stderr, "Initialising ALSA...\n"); + + const int open_mode = 0; //|= SND_PCM_NONBLOCK; + + if ((err = snd_pcm_open(&m_alsa_handle, alsa_dev, + SND_PCM_STREAM_CAPTURE, open_mode)) < 0) { + fprintf (stderr, "cannot open audio device %s (%s)\n", + alsa_dev, snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_malloc(&hw_params)) < 0) { + fprintf (stderr, "cannot allocate hardware parameter structure (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_any(m_alsa_handle, hw_params)) < 0) { + fprintf (stderr, "cannot initialize hardware parameter structure (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_set_access(m_alsa_handle, hw_params, + SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) { + fprintf (stderr, "cannot set access type (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_set_format(m_alsa_handle, hw_params, + SND_PCM_FORMAT_S16_LE)) < 0) { + fprintf (stderr, "cannot set sample format (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_set_rate_near(m_alsa_handle, + hw_params, &m_rate, 0)) < 0) { + fprintf (stderr, "cannot set sample rate (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params_set_channels(m_alsa_handle, + hw_params, m_channels)) < 0) { + fprintf (stderr, "cannot set channel count (%s)\n", + snd_strerror(err)); + return 1; + } + + if ((err = snd_pcm_hw_params(m_alsa_handle, hw_params)) < 0) { + fprintf (stderr, "cannot set parameters (%s)\n", + snd_strerror(err)); + return 1; + } + + snd_pcm_hw_params_free (hw_params); + + if ((err = snd_pcm_prepare(m_alsa_handle)) < 0) { + fprintf (stderr, "cannot prepare audio interface for use (%s)\n", + snd_strerror(err)); + return 1; + } + + fprintf(stderr, "ALSA init done.\n"); + return 0; +} + +size_t AlsaInput::read(uint8_t* buf, snd_pcm_uframes_t length) +{ + int i; + int err; + + err = snd_pcm_readi(m_alsa_handle, buf, length); + + if (err != length) { + if (err < 0) { + fprintf (stderr, "read from audio interface failed (%s)\n", + snd_strerror(err)); + } + else { + fprintf(stderr, "short alsa read: %d\n", err); + } + } + + return err; +} + +int AlsaInput::start() +{ + m_running = true; + m_thread = boost::thread(&AlsaInput::process, this); +} + +void AlsaInput::process() +{ + uint8_t samplebuf[NUM_SAMPLES_PER_CALL * BYTES_PER_SAMPLE * m_channels]; + while (m_running) { + size_t n = read(samplebuf, NUM_SAMPLES_PER_CALL); + + m_queue.push(samplebuf, n); + } +} + diff --git a/src/AlsaInput.h b/src/AlsaInput.h new file mode 100644 index 0000000..b43ad7d --- /dev/null +++ b/src/AlsaInput.h @@ -0,0 +1,90 @@ +/* ------------------------------------------------------------------ + * Copyright (C) 2011 Martin Storsjo + * Copyright (C) 2013,2014 Matthias P. Braendli + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either + * express or implied. + * See the License for the specific language governing permissions + * and limitations under the License. + * ------------------------------------------------------------------- + */ + +#ifndef __ALSA_H_ +#define __ALSA_H_ +#include <cstdio> +#include <stdint.h> +#include <string> + +#include <alsa/asoundlib.h> +#include <boost/thread/thread.hpp> + +#include "SampleQueue.h" + +using namespace std; + +// 16 bits per sample is fine for now +#define BYTES_PER_SAMPLE 2 + +// How many samples we insert into the queue each call +#define NUM_SAMPLES_PER_CALL 10 // 10 samples @ 32kHz = 3.125ms + +class AlsaInput +{ + public: + AlsaInput(const string& alsa_dev, + unsigned int channels, + unsigned int rate, + SampleQueue<uint8_t>& queue) : + m_running(false), + m_alsa_dev(alsa_dev), + m_channels(channels), + m_rate(rate), + m_queue(queue), + m_alsa_handle(NULL) { } + + ~AlsaInput() + { + if (m_running) { + m_running = false; + m_thread.interrupt(); + m_thread.join(); + } + + if (m_alsa_handle) { + snd_pcm_abort(m_alsa_handle); + m_alsa_handle = NULL; + } + } + + int prepare(); + + int start(); + + private: + AlsaInput(const AlsaInput& other) : m_queue(other.m_queue) {} + + size_t read(uint8_t* buf, snd_pcm_uframes_t length); + void process(); + + bool m_running; + boost::thread m_thread; + string m_alsa_dev; + unsigned int m_channels; + unsigned int m_rate; + + SampleQueue<uint8_t>& m_queue; + + snd_pcm_t *m_alsa_handle; + +}; + +#endif + diff --git a/src/SampleQueue.h b/src/SampleQueue.h new file mode 100644 index 0000000..fddc3a4 --- /dev/null +++ b/src/SampleQueue.h @@ -0,0 +1,123 @@ +/* + Copyright (C) 2013, 2014 + Matthias P. Braendli, matthias.braendli@mpb.li + + An implementation for a threadsafe queue using boost thread library + for audio samples. +*/ + +#ifndef _SAMPLE_QUEUE_H_ +#define _SAMPLE_QUEUE_H_ + +#include <boost/thread.hpp> +#include <queue> + +/* This queue is meant to be used by two threads. One producer + * that pushes elements into the queue, and one consumer that + * retrieves the elements. + * + * The queue can make the consumer block until enough elements + * are available. + */ + +template<typename T> +class SampleQueue +{ +public: + SampleQueue(unsigned int bytes_per_sample, + unsigned int channels, + size_t max_size) : + m_bytes_per_sample(bytes_per_sample), + m_channels(channels), m_max_size(max_size) {} + + + /* Push a bunch of samples into the buffer */ + size_t push(const T *val, size_t len) + { + boost::mutex::scoped_lock lock(m_mutex); + + if (m_queue.size() >= m_max_size) { + return 0; + } + + for (size_t i = 0; i < len; i++) { + m_queue.push_back(val[i]); + } + + size_t new_size = m_queue.size(); + lock.unlock(); + + //m_condition_variable.notify_one(); + + return new_size; + } + + bool empty() const + { + boost::mutex::scoped_lock lock(m_mutex); + return m_queue.empty(); + } + + /* Get len elements, place them into the buf array + * Returns the number of elements it was able to take + * from the queue + */ + size_t pop(T* buf, size_t len) + { + boost::mutex::scoped_lock lock(m_mutex); + + size_t ret = 0; + + if (m_queue.size() < len) { + size_t i; + for (i = 0; i < m_queue.size(); i++) { + buf[i] = m_queue[i]; + } + + ret = i; + + for (; i < len; i++) { + buf[i] = 0; + } + + m_queue.resize(0); + } + else { + for (size_t i = 0; i < len; i++) { + buf[i] = m_queue[i]; + } + + ret = len; + + m_queue.erase(m_queue.front(), m_queue.front() + len); + } + + return ret; + } + + /* + void wait_and_pop(T& popped_value) + { + boost::mutex::scoped_lock lock(m_mutex); + while(m_queue.size() < m_required_size) + { + m_condition_variable.wait(lock); + } + + popped_value = m_queue.front(); + m_queue.pop_front(); + } + */ + +private: + std::deque<T> m_queue; + mutable boost::mutex m_mutex; + //boost::condition_variable m_condition_variable; + + unsigned int m_channels; + unsigned int m_bytes_per_sample; + size_t m_max_size; +}; + +#endif + diff --git a/src/zmq.hpp b/src/zmq.hpp new file mode 100644 index 0000000..147f096 --- /dev/null +++ b/src/zmq.hpp @@ -0,0 +1,566 @@ +/* + Copyright (c) 2009-2011 250bpm s.r.o. + Copyright (c) 2011 Botond Ballo + Copyright (c) 2007-2009 iMatix Corporation + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to + deal in the Software without restriction, including without limitation the + rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + sell copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + IN THE SOFTWARE. +*/ + +#ifndef __ZMQ_HPP_INCLUDED__ +#define __ZMQ_HPP_INCLUDED__ + +#include <zmq.h> + +#include <algorithm> +#include <cassert> +#include <cstring> +#include <string> +#include <exception> + +// Detect whether the compiler supports C++11 rvalue references. +#if (defined(__GNUC__) && (__GNUC__ > 4 || \ + (__GNUC__ == 4 && __GNUC_MINOR__ > 2)) && \ + defined(__GXX_EXPERIMENTAL_CXX0X__)) + #define ZMQ_HAS_RVALUE_REFS + #define ZMQ_DELETED_FUNCTION = delete +#elif defined(__clang__) + #if __has_feature(cxx_rvalue_references) + #define ZMQ_HAS_RVALUE_REFS + #endif + + #if __has_feature(cxx_deleted_functions) + #define ZMQ_DELETED_FUNCTION = delete + #else + #define ZMQ_DELETED_FUNCTION + #endif +#elif defined(_MSC_VER) && (_MSC_VER >= 1600) + #define ZMQ_HAS_RVALUE_REFS + #define ZMQ_DELETED_FUNCTION +#else + #define ZMQ_DELETED_FUNCTION +#endif + +#if ZMQ_VERSION >= ZMQ_MAKE_VERSION(3, 3, 0) +#define ZMQ_NEW_MONITOR_EVENT_LAYOUT +#endif + +// In order to prevent unused variable warnings when building in non-debug +// mode use this macro to make assertions. +#ifndef NDEBUG +# define ZMQ_ASSERT(expression) assert(expression) +#else +# define ZMQ_ASSERT(expression) (void)(expression) +#endif + +namespace zmq +{ + + typedef zmq_free_fn free_fn; + typedef zmq_pollitem_t pollitem_t; + + class error_t : public std::exception + { + public: + + error_t () : errnum (zmq_errno ()) {} + + virtual const char *what () const throw () + { + return zmq_strerror (errnum); + } + + int num () const + { + return errnum; + } + + private: + + int errnum; + }; + + inline int poll (zmq_pollitem_t *items_, int nitems_, long timeout_ = -1) + { + int rc = zmq_poll (items_, nitems_, timeout_); + if (rc < 0) + throw error_t (); + return rc; + } + + inline void proxy (void *frontend, void *backend, void *capture) + { + int rc = zmq_proxy (frontend, backend, capture); + if (rc != 0) + throw error_t (); + } + + inline void version (int *major_, int *minor_, int *patch_) + { + zmq_version (major_, minor_, patch_); + } + + class message_t + { + friend class socket_t; + + public: + + inline message_t () + { + int rc = zmq_msg_init (&msg); + if (rc != 0) + throw error_t (); + } + + inline explicit message_t (size_t size_) + { + int rc = zmq_msg_init_size (&msg, size_); + if (rc != 0) + throw error_t (); + } + + inline message_t (void *data_, size_t size_, free_fn *ffn_, + void *hint_ = NULL) + { + int rc = zmq_msg_init_data (&msg, data_, size_, ffn_, hint_); + if (rc != 0) + throw error_t (); + } + +#ifdef ZMQ_HAS_RVALUE_REFS + inline message_t (message_t &&rhs) : msg (rhs.msg) + { + int rc = zmq_msg_init (&rhs.msg); + if (rc != 0) + throw error_t (); + } + + inline message_t &operator = (message_t &&rhs) + { + std::swap (msg, rhs.msg); + return *this; + } +#endif + + inline ~message_t () + { + int rc = zmq_msg_close (&msg); + ZMQ_ASSERT (rc == 0); + } + + inline void rebuild () + { + int rc = zmq_msg_close (&msg); + if (rc != 0) + throw error_t (); + rc = zmq_msg_init (&msg); + if (rc != 0) + throw error_t (); + } + + inline void rebuild (size_t size_) + { + int rc = zmq_msg_close (&msg); + if (rc != 0) + throw error_t (); + rc = zmq_msg_init_size (&msg, size_); + if (rc != 0) + throw error_t (); + } + + inline void rebuild (void *data_, size_t size_, free_fn *ffn_, + void *hint_ = NULL) + { + int rc = zmq_msg_close (&msg); + if (rc != 0) + throw error_t (); + rc = zmq_msg_init_data (&msg, data_, size_, ffn_, hint_); + if (rc != 0) + throw error_t (); + } + + inline void move (message_t *msg_) + { + int rc = zmq_msg_move (&msg, &(msg_->msg)); + if (rc != 0) + throw error_t (); + } + + inline void copy (message_t *msg_) + { + int rc = zmq_msg_copy (&msg, &(msg_->msg)); + if (rc != 0) + throw error_t (); + } + + inline bool more () + { + int rc = zmq_msg_more (&msg); + return rc != 0; + } + + inline void *data () + { + return zmq_msg_data (&msg); + } + + inline const void* data () const + { + return zmq_msg_data (const_cast<zmq_msg_t*>(&msg)); + } + + inline size_t size () const + { + return zmq_msg_size (const_cast<zmq_msg_t*>(&msg)); + } + + private: + + // The underlying message + zmq_msg_t msg; + + // Disable implicit message copying, so that users won't use shared + // messages (less efficient) without being aware of the fact. + message_t (const message_t&); + void operator = (const message_t&); + }; + + class context_t + { + friend class socket_t; + + public: + inline context_t () + { + ptr = zmq_ctx_new (); + if (ptr == NULL) + throw error_t (); + } + + + inline explicit context_t (int io_threads_) + { + ptr = zmq_ctx_new (); + if (ptr == NULL) + throw error_t (); + + int rc = zmq_ctx_set (ptr, ZMQ_IO_THREADS, io_threads_); + ZMQ_ASSERT (rc == 0); + } + +#ifdef ZMQ_HAS_RVALUE_REFS + inline context_t (context_t &&rhs) : ptr (rhs.ptr) + { + rhs.ptr = NULL; + } + inline context_t &operator = (context_t &&rhs) + { + std::swap (ptr, rhs.ptr); + return *this; + } +#endif + + inline ~context_t () + { + close(); + } + + inline void close() + { + if (ptr == NULL) + return; + int rc = zmq_ctx_destroy (ptr); + ZMQ_ASSERT (rc == 0); + ptr = NULL; + } + + // Be careful with this, it's probably only useful for + // using the C api together with an existing C++ api. + // Normally you should never need to use this. + inline operator void* () + { + return ptr; + } + + private: + + void *ptr; + + context_t (const context_t&); + void operator = (const context_t&); + }; + + class socket_t + { + friend class monitor_t; + public: + + inline socket_t (context_t &context_, int type_) + { + ctxptr = context_.ptr; + ptr = zmq_socket (context_.ptr, type_); + if (ptr == NULL) + throw error_t (); + } + +#ifdef ZMQ_HAS_RVALUE_REFS + inline socket_t(socket_t&& rhs) : ptr(rhs.ptr) + { + rhs.ptr = NULL; + } + inline socket_t& operator=(socket_t&& rhs) + { + std::swap(ptr, rhs.ptr); + return *this; + } +#endif + + inline ~socket_t () + { + close(); + } + + inline operator void* () + { + return ptr; + } + + inline void close() + { + if(ptr == NULL) + // already closed + return ; + int rc = zmq_close (ptr); + ZMQ_ASSERT (rc == 0); + ptr = 0 ; + } + + inline void setsockopt (int option_, const void *optval_, + size_t optvallen_) + { + int rc = zmq_setsockopt (ptr, option_, optval_, optvallen_); + if (rc != 0) + throw error_t (); + } + + inline void getsockopt (int option_, void *optval_, + size_t *optvallen_) + { + int rc = zmq_getsockopt (ptr, option_, optval_, optvallen_); + if (rc != 0) + throw error_t (); + } + + inline void bind (const char *addr_) + { + int rc = zmq_bind (ptr, addr_); + if (rc != 0) + throw error_t (); + } + + inline void unbind (const char *addr_) + { + int rc = zmq_unbind (ptr, addr_); + if (rc != 0) + throw error_t (); + } + + inline void connect (const char *addr_) + { + int rc = zmq_connect (ptr, addr_); + if (rc != 0) + throw error_t (); + } + + inline void disconnect (const char *addr_) + { + int rc = zmq_disconnect (ptr, addr_); + if (rc != 0) + throw error_t (); + } + + inline bool connected() + { + return(ptr != NULL); + } + + inline size_t send (const void *buf_, size_t len_, int flags_ = 0) + { + int nbytes = zmq_send (ptr, buf_, len_, flags_); + if (nbytes >= 0) + return (size_t) nbytes; + if (zmq_errno () == EAGAIN) + return 0; + throw error_t (); + } + + inline bool send (message_t &msg_, int flags_ = 0) + { + int nbytes = zmq_msg_send (&(msg_.msg), ptr, flags_); + if (nbytes >= 0) + return true; + if (zmq_errno () == EAGAIN) + return false; + throw error_t (); + } + + inline size_t recv (void *buf_, size_t len_, int flags_ = 0) + { + int nbytes = zmq_recv (ptr, buf_, len_, flags_); + if (nbytes >= 0) + return (size_t) nbytes; + if (zmq_errno () == EAGAIN) + return 0; + throw error_t (); + } + + inline bool recv (message_t *msg_, int flags_ = 0) + { + int nbytes = zmq_msg_recv (&(msg_->msg), ptr, flags_); + if (nbytes >= 0) + return true; + if (zmq_errno () == EAGAIN) + return false; + throw error_t (); + } + + private: + void *ptr; + void *ctxptr; + + socket_t (const socket_t&) ZMQ_DELETED_FUNCTION; + void operator = (const socket_t&) ZMQ_DELETED_FUNCTION; + }; + + class monitor_t + { + public: + monitor_t() : socketPtr(NULL) {} + virtual ~monitor_t() {} + + void monitor(socket_t &socket, const char *addr_, int events = ZMQ_EVENT_ALL) + { + int rc = zmq_socket_monitor(socket.ptr, addr_, events); + if (rc != 0) + throw error_t (); + + socketPtr = socket.ptr; + void *s = zmq_socket (socket.ctxptr, ZMQ_PAIR); + assert (s); + + rc = zmq_connect (s, addr_); + assert (rc == 0); + + on_monitor_started(); + + while (true) { + zmq_msg_t eventMsg; + zmq_msg_init (&eventMsg); + rc = zmq_recvmsg (s, &eventMsg, 0); + if (rc == -1 && zmq_errno() == ETERM) + break; + assert (rc != -1); + zmq_event_t* event = static_cast<zmq_event_t*>(zmq_msg_data (&eventMsg)); + +#ifdef ZMQ_NEW_MONITOR_EVENT_LAYOUT + zmq_msg_t addrMsg; + zmq_msg_init (&addrMsg); + rc = zmq_recvmsg (s, &addrMsg, 0); + if (rc == -1 && zmq_errno() == ETERM) + break; + assert (rc != -1); + const char* str = static_cast<const char*>(zmq_msg_data (&addrMsg)); + std::string address(str, str + zmq_msg_size(&addrMsg)); + zmq_msg_close (&addrMsg); +#else + // Bit of a hack, but all events in the zmq_event_t union have the same layout so this will work for all event types. + std::string address = event->data.connected.addr; +#endif + +#ifdef ZMQ_EVENT_MONITOR_STOPPED + if (event->event == ZMQ_EVENT_MONITOR_STOPPED) + break; +#endif + + switch (event->event) { + case ZMQ_EVENT_CONNECTED: + on_event_connected(*event, address.c_str()); + break; + case ZMQ_EVENT_CONNECT_DELAYED: + on_event_connect_delayed(*event, address.c_str()); + break; + case ZMQ_EVENT_CONNECT_RETRIED: + on_event_connect_retried(*event, address.c_str()); + break; + case ZMQ_EVENT_LISTENING: + on_event_listening(*event, address.c_str()); + break; + case ZMQ_EVENT_BIND_FAILED: + on_event_bind_failed(*event, address.c_str()); + break; + case ZMQ_EVENT_ACCEPTED: + on_event_accepted(*event, address.c_str()); + break; + case ZMQ_EVENT_ACCEPT_FAILED: + on_event_accept_failed(*event, address.c_str()); + break; + case ZMQ_EVENT_CLOSED: + on_event_closed(*event, address.c_str()); + break; + case ZMQ_EVENT_CLOSE_FAILED: + on_event_close_failed(*event, address.c_str()); + break; + case ZMQ_EVENT_DISCONNECTED: + on_event_disconnected(*event, address.c_str()); + break; + default: + on_event_unknown(*event, address.c_str()); + break; + } + zmq_msg_close (&eventMsg); + } + zmq_close (s); + socketPtr = NULL; + } + +#ifdef ZMQ_EVENT_MONITOR_STOPPED + void abort() + { + if (socketPtr) + zmq_socket_monitor(socketPtr, NULL, 0); + } +#endif + virtual void on_monitor_started() {} + virtual void on_event_connected(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_connect_delayed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_connect_retried(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_listening(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_bind_failed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_accepted(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_accept_failed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_closed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_close_failed(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_disconnected(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + virtual void on_event_unknown(const zmq_event_t &event_, const char* addr_) { (void)event_; (void)addr_; } + private: + void* socketPtr; + }; +} + +#endif |