From 100e2d3bd46f64df730c8a375559680c577036ef Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Christian=20Gl=C3=B6ckner?= Date: Mon, 25 Jan 2016 14:14:22 +0100 Subject: applied clang-format --- drumgizmo/output/alsa.cc | 130 +++++++++++++++++++++++++---------------------- 1 file changed, 70 insertions(+), 60 deletions(-) (limited to 'drumgizmo/output/alsa.cc') 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(¶ms); 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; 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