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authorChristian Glöckner <cgloeckner@freenet.de>2016-01-25 14:14:22 +0100
committerAndré Nusser <andre.nusser@googlemail.com>2016-02-09 09:03:17 +0100
commit100e2d3bd46f64df730c8a375559680c577036ef (patch)
tree952e0ce0a1c5b6efb792c50617baa1484ba51e39 /drumgizmo/output/alsa.cc
parente5a773e80bee619987aacd40cc3205acfe146e9c (diff)
applied clang-format
Diffstat (limited to 'drumgizmo/output/alsa.cc')
-rw-r--r--drumgizmo/output/alsa.cc130
1 files changed, 70 insertions, 60 deletions
diff --git a/drumgizmo/output/alsa.cc b/drumgizmo/output/alsa.cc
index 14a9c6d..26cb0cf 100644
--- a/drumgizmo/output/alsa.cc
+++ b/drumgizmo/output/alsa.cc
@@ -30,57 +30,59 @@
int const BUFFER_SIZE = 40960;
-struct AlsaInitError {
+struct AlsaInitError
+{
int const code;
std::string const msg;
-
- AlsaInitError(int op_code, std::string const & msg)
- : code{code}
- , msg{msg} {
- }
-
- static inline void test(int code, std::string const & msg) {
- if (code < 0) {
+
+ AlsaInitError(int op_code, std::string const &msg) : code{code}, msg{msg} {}
+
+ static inline void test(int code, std::string const &msg)
+ {
+ if (code < 0)
+ {
throw AlsaInitError(code, msg);
}
}
};
AlsaOutputEngine::AlsaOutputEngine()
- : handle{nullptr}
- , params{nullptr}
- , data{}
- , num_channels{0u}
- , dev{"default"}
- , srate{44100}
- , frames{32} {
+ : handle{nullptr}, params{nullptr}, data{}, num_channels{0u},
+ dev{"default"}, srate{44100}, frames{32}
+{
}
-AlsaOutputEngine::~AlsaOutputEngine() {
+AlsaOutputEngine::~AlsaOutputEngine()
+{
// note: do NOT release `params`, it was allocated by `alloca()`
-
- if (handle != nullptr) {
+
+ if (handle != nullptr)
+ {
snd_pcm_close(handle);
}
}
-bool AlsaOutputEngine::init(Channels channels) {
+bool AlsaOutputEngine::init(Channels channels)
+{
// try to initialize alsa
- try {
+ try
+ {
int value = snd_pcm_open(&handle, dev.c_str(), SND_PCM_STREAM_PLAYBACK, 0);
AlsaInitError::test(value, "snd_pcm_open");
num_channels = channels.size();
- if (handle == nullptr) {
+ if (handle == nullptr)
+ {
std::cerr << "[AlsaOutputEngine] Failed to acquire "
- << "hardware handle\n";
+ << "hardware handle\n";
return false;
}
// Allocate and init a hardware parameters object
snd_pcm_hw_params_alloca(&params);
value = snd_pcm_hw_params_any(handle, params);
AlsaInitError::test(value, "snd_pcm_hw_params_any");
-
- value = snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
+
+ value = snd_pcm_hw_params_set_access(handle, params,
+ SND_PCM_ACCESS_RW_INTERLEAVED);
AlsaInitError::test(value, "snd_pcm_hw_params_set_access");
value = snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_FLOAT);
AlsaInitError::test(value, "snd_pcm_hw_params_set_format");
@@ -92,67 +94,75 @@ bool AlsaOutputEngine::init(Channels channels) {
AlsaInitError::test(value, "snd_pcm_hw_params_set_period_size_near");
value = snd_pcm_hw_params(handle, params);
AlsaInitError::test(value, "snd_pcm_hw_params");
-
- } catch (AlsaInitError const & error) {
- std::cerr << "[AlsaOutputEngine] " << error.msg << " failed: "
- << snd_strerror(error.code) << std::endl;
+ }
+ catch (AlsaInitError const &error)
+ {
+ std::cerr << "[AlsaOutputEngine] " << error.msg
+ << " failed: " << snd_strerror(error.code) << std::endl;
return false;
}
-
+
data.clear();
data.resize(BUFFER_SIZE * num_channels);
-
+
return true;
}
-void AlsaOutputEngine::setParm(std::string parm, std::string value) {
- if (parm == "dev") {
+void AlsaOutputEngine::setParm(std::string parm, std::string value)
+{
+ if (parm == "dev")
+ {
// apply hardware device name
dev = value;
-
- } else if (parm == "frames") {
+ }
+ else if (parm == "frames")
+ {
// try to apply hardware buffer size
- try {
+ try
+ {
frames = std::stoi(value);
- } catch (...) {
- std::cerr << "[AlsaOutputEngine] Invalid buffer size "
- << value << "\n";
}
- } else if (parm == "srate") {
- try {
+ catch (...)
+ {
+ std::cerr << "[AlsaOutputEngine] Invalid buffer size " << value << "\n";
+ }
+ }
+ else if (parm == "srate")
+ {
+ try
+ {
srate = std::stoi(value);
- } catch (...) {
- std::cerr << "[AlsaOutputEngine] Invalid samplerate "
- << value << "\n";
}
- } else {
- std::cerr << "[AlsaOutputEngine] Unsupported parameter '"
- << parm << "'\n";
+ catch (...)
+ {
+ std::cerr << "[AlsaOutputEngine] Invalid samplerate " << value << "\n";
+ }
+ }
+ else
+ {
+ std::cerr << "[AlsaOutputEngine] Unsupported parameter '" << parm << "'\n";
}
}
-bool AlsaOutputEngine::start() {
- return true;
-}
+bool AlsaOutputEngine::start() { return true; }
-void AlsaOutputEngine::stop() {
-}
+void AlsaOutputEngine::stop() {}
-void AlsaOutputEngine::pre(size_t nsamples) {
-}
+void AlsaOutputEngine::pre(size_t nsamples) {}
-void AlsaOutputEngine::run(int ch, sample_t* samples, size_t nsamples) {
+void AlsaOutputEngine::run(int ch, sample_t *samples, size_t nsamples)
+{
// Write channel data in interleaved buffer
- for (auto i = 0u; i < nsamples; ++i) {
+ for (auto i = 0u; i < nsamples; ++i)
+ {
data[i * num_channels + ch] = samples[i];
}
}
-void AlsaOutputEngine::post(size_t nsamples) {
+void AlsaOutputEngine::post(size_t nsamples)
+{
// Write the interleaved buffer to the soundcard
snd_pcm_writei(handle, data.data(), nsamples);
}
-size_t AlsaOutputEngine::samplerate() {
- return srate;
-}
+size_t AlsaOutputEngine::samplerate() { return srate; }