diff options
Diffstat (limited to 'libs/backends/alsa/alsa_audiobackend.h')
| -rw-r--r-- | libs/backends/alsa/alsa_audiobackend.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/libs/backends/alsa/alsa_audiobackend.h b/libs/backends/alsa/alsa_audiobackend.h index c95593c349..1dca7ec149 100644 --- a/libs/backends/alsa/alsa_audiobackend.h +++ b/libs/backends/alsa/alsa_audiobackend.h @@ -148,10 +148,10 @@ class AlsaMidiPort : public AlsaPort { const AlsaMidiBuffer * const_buffer () const { return & _buffer[_bufperiod]; } void next_period() { if (_n_periods > 1) { get_buffer(0); _bufperiod = (_bufperiod + 1) % _n_periods; } } - void set_n_periods(int n) { if (n > 0 && n < 3) { _n_periods = n; } } + void set_n_periods(int n) { if (n > 0 && n < 4) { _n_periods = n; } } private: - AlsaMidiBuffer _buffer[2]; + AlsaMidiBuffer _buffer[3]; int _n_periods; int _bufperiod; }; // class AlsaMidiPort @@ -168,6 +168,8 @@ class AlsaAudioBackend : public AudioBackend { bool is_realtime () const; bool use_separate_input_and_output_devices () const { return true; } + bool can_set_period_size () const { return true; } + std::vector<DeviceStatus> enumerate_devices () const; std::vector<DeviceStatus> enumerate_input_devices () const; std::vector<DeviceStatus> enumerate_output_devices () const; @@ -175,6 +177,7 @@ class AlsaAudioBackend : public AudioBackend { std::vector<float> available_sample_rates2 (const std::string&, const std::string&) const; std::vector<uint32_t> available_buffer_sizes (const std::string& device) const; std::vector<uint32_t> available_buffer_sizes2 (const std::string&, const std::string&) const; + std::vector<uint32_t> available_period_sizes (const std::string& driver) const; uint32_t available_input_channel_count (const std::string& device) const; uint32_t available_output_channel_count (const std::string& device) const; @@ -186,6 +189,7 @@ class AlsaAudioBackend : public AudioBackend { int set_output_device_name (const std::string&); int set_sample_rate (float); int set_buffer_size (uint32_t); + int set_peridod_size (uint32_t); int set_interleaved (bool yn); int set_input_channels (uint32_t); int set_output_channels (uint32_t); @@ -202,6 +206,7 @@ class AlsaAudioBackend : public AudioBackend { std::string output_device_name () const; float sample_rate () const; uint32_t buffer_size () const; + uint32_t period_size () const; bool interleaved () const; uint32_t input_channels () const; uint32_t output_channels () const; |