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virtual abstraction of Alsa Raw+Seq

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This commit is contained in:
Robin Gareus 2014-06-21 13:51:46 +02:00
parent 5e436fc8fc
commit 6648074a13
10 changed files with 449 additions and 526 deletions
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48
libs/backends/alsa/alsa_sequencer.h
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@ -27,76 +27,36 @@
#include "pbd/ringbuffer.h"
#include "ardour/types.h"
#include "alsa_midi.h"
namespace ARDOUR {
class AlsaSeqMidiIO {
class AlsaSeqMidiIO : virtual public AlsaMidiIO {
public:
AlsaSeqMidiIO (const char *port_name, const bool input);
virtual ~AlsaSeqMidiIO ();
int state (void) const { return _state; }
int start ();
int stop ();
void setup_timing (const size_t samples_per_period, const float samplerate);
void sync_time(uint64_t);
virtual void* main_process_thread () = 0;
protected:
pthread_t _main_thread;
pthread_mutex_t _notify_mutex;
pthread_cond_t _notify_ready;
int _state;
bool _running;
snd_seq_t *_seq;
//snd_seq_addr_t _port;
int _port;
int _npfds;
struct pollfd *_pfds;
double _sample_length_us;
double _period_length_us;
size_t _samples_per_period;
uint64_t _clock_monotonic;
struct MidiEventHeader {
uint64_t time;
size_t size;
MidiEventHeader(const uint64_t t, const size_t s)
: time(t)
, size(s) {}
};
RingBuffer<uint8_t>* _rb;
private:
void init (const char *device_name, const bool input);
};
class AlsaSeqMidiOut : public AlsaSeqMidiIO
class AlsaSeqMidiOut : public AlsaSeqMidiIO, public AlsaMidiOut
{
public:
AlsaSeqMidiOut (const char *port_name);
void* main_process_thread ();
int send_event (const pframes_t, const uint8_t *, const size_t);
};
class AlsaSeqMidiIn : public AlsaSeqMidiIO
class AlsaSeqMidiIn : public AlsaSeqMidiIO, public AlsaMidiIn
{
public:
AlsaSeqMidiIn (const char *port_name);
void* main_process_thread ();
size_t recv_event (pframes_t &, uint8_t *, size_t &);
private:
int queue_event (const uint64_t, const uint8_t *, const size_t);
};
} // namespace