ALSAInput(const char *device, unsigned sample_rate, unsigned num_channels, audio_callback_t audio_callback, ALSAPool *parent_pool, unsigned internal_dev_index);
~ALSAInput();
+ // If not called before start_capture_thread(), the capture thread
+ // will call it until it succeeds.
+ bool open_device();
+
+ // Not valid before the device has been successfully opened.
// NOTE: Might very well be different from the sample rate given to the
// constructor, since the card might not support the one you wanted.
unsigned get_sample_rate() const { return sample_rate; }
private:
void capture_thread_func();
int64_t frames_to_pts(uint64_t n) const;
- void die_on_error(const char *func_name, int err);
+
+ enum class CaptureEndReason {
+ REQUESTED_QUIT,
+ DEVICE_GONE,
+ OTHER_ERROR
+ };
+ CaptureEndReason do_capture();
std::string device;
unsigned sample_rate, num_channels, num_periods;
bmusb::AudioFormat audio_format;
audio_callback_t audio_callback;
- snd_pcm_t *pcm_handle;
+ snd_pcm_t *pcm_handle = nullptr;
std::thread capture_thread;
std::atomic<bool> should_quit{false};
std::unique_ptr<uint8_t[]> buffer;
// Must be called with <mu> held. Will allocate a new entry if needed.
// The returned entry will be set to READY state.
- unsigned find_free_device_index();
+ unsigned find_free_device_index(const std::string &name,
+ const std::string &info,
+ unsigned num_channels,
+ const std::string &address);
friend class ALSAInput;
};