X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Faudio_diskstream.h;h=8f081ab58dbca91d8f26888ab674a8546b1d06e9;hb=022818b4a796f52c0a91eea42e65aec0bc7bed43;hp=74c804e5bb87f42bd5fd97e4a0fa893b6744d457;hpb=0c4c6e031a3624cfc74c2eef6e79527b7c49eca8;p=ardour.git diff --git a/libs/ardour/ardour/audio_diskstream.h b/libs/ardour/ardour/audio_diskstream.h index 74c804e5bb..8f081ab58d 100644 --- a/libs/ardour/ardour/audio_diskstream.h +++ b/libs/ardour/ardour/audio_diskstream.h @@ -32,16 +32,14 @@ #include #include #include +#include #include #include -#include -#include -#include -#include #include #include #include +#include struct tm; @@ -65,23 +63,28 @@ class AudioDiskstream : public Diskstream float capture_buffer_load() const; string input_source (uint32_t n=0) const { - if (n < channels.size()) { - return channels[n].source ? channels[n].source->name() : ""; + boost::shared_ptr c = channels.reader(); + if (n < c->size()) { + return (*c)[n]->source ? (*c)[n]->source->name() : ""; } else { return ""; } } Port *input_source_port (uint32_t n=0) const { - if (n < channels.size()) return channels[n].source; return 0; + boost::shared_ptr c = channels.reader(); + if (n < c->size()) return (*c)[n]->source; return 0; } void set_record_enabled (bool yn); int set_destructive (bool yn); + bool can_become_destructive (bool& requires_bounce) const; - float peak_power(uint32_t n=0) { - float x = channels[n].peak_power; - channels[n].peak_power = 0.0f; + float peak_power(uint32_t n = 0) { + boost::shared_ptr c = channels.reader(); + ChannelInfo* chaninfo = (*c)[n]; + float x = chaninfo->peak_power; + chaninfo->peak_power = 0.0f; if (x > 0.0f) { return 20.0f * fast_log10(x); } else { @@ -89,33 +92,35 @@ class AudioDiskstream : public Diskstream } } - AudioPlaylist* audio_playlist () { return dynamic_cast(_playlist); } + boost::shared_ptr audio_playlist () { return boost::dynamic_pointer_cast(_playlist); } - int use_playlist (Playlist *); + int use_playlist (boost::shared_ptr); int use_new_playlist (); int use_copy_playlist (); - Sample *playback_buffer (uint32_t n=0) { - if (n < channels.size()) - return channels[n].current_playback_buffer; + Sample *playback_buffer (uint32_t n = 0) { + boost::shared_ptr c = channels.reader(); + if (n < c->size()) + return (*c)[n]->current_playback_buffer; return 0; } - Sample *capture_buffer (uint32_t n=0) { - if (n < channels.size()) - return channels[n].current_capture_buffer; + Sample *capture_buffer (uint32_t n = 0) { + boost::shared_ptr c = channels.reader(); + if (n < c->size()) + return (*c)[n]->current_capture_buffer; return 0; } boost::shared_ptr write_source (uint32_t n=0) { - if (n < channels.size()) - return channels[n].write_source; + boost::shared_ptr c = channels.reader(); + if (n < c->size()) + return (*c)[n]->write_source; return boost::shared_ptr(); } - int add_channel (); - int remove_channel (); - + int add_channel (uint32_t how_many); + int remove_channel (uint32_t how_many); /* stateful */ @@ -142,6 +147,48 @@ class AudioDiskstream : public Diskstream XMLNode* deprecated_io_node; + /** + * Calculate the playback distance during varispeed playback. + * Important for Session::process to know exactly, how many frames + * were passed by. + */ + static nframes_t calculate_varispeed_playback_distance( + nframes_t nframes, + uint64_t& the_last_phase, + uint64_t& the_phi, + uint64_t& the_target_phi) + { + // calculate playback distance in the same way + // as in AudioDiskstream::process_varispeed_playback + uint64_t phase = the_last_phase; + int64_t phi_delta; + nframes_t i = 0; + + const int64_t fractional_part_mask = 0xFFFFFF; + const Sample binary_scaling_factor = 16777216.0f; + + if (the_phi != the_target_phi) { + phi_delta = ((int64_t)(the_target_phi - the_phi)) / nframes; + } else { + phi_delta = 0; + } + + Sample fractional_phase_part; + + i = 0; + phase = the_last_phase; + + for (nframes_t outsample = 0; outsample < nframes; ++outsample) { + i = phase >> 24; + fractional_phase_part = (phase & fractional_part_mask) / binary_scaling_factor; + phase += the_phi + phi_delta; + } + + the_last_phase = (phase & fractional_part_mask); + the_phi = the_target_phi; + return i; // + 1; + } + protected: friend class Session; @@ -158,6 +205,7 @@ class AudioDiskstream : public Diskstream int rename_write_sources (); void reset_write_sources (bool, bool force = false); void non_realtime_input_change (); + void non_realtime_locate (nframes_t location); protected: friend class Auditioner; @@ -172,47 +220,57 @@ class AudioDiskstream : public Diskstream private: struct ChannelInfo { - - Sample *playback_wrap_buffer; - Sample *capture_wrap_buffer; - Sample *speed_buffer; - - float peak_power; - boost::shared_ptr fades_source; - boost::shared_ptr write_source; - - Port *source; - Sample *current_capture_buffer; - Sample *current_playback_buffer; - - RingBufferNPT *playback_buf; - RingBufferNPT *capture_buf; - - Sample* scrub_buffer; - Sample* scrub_forward_buffer; - Sample* scrub_reverse_buffer; + ChannelInfo (nframes_t buffer_size, nframes_t speed_buffer_size, nframes_t wrap_buffer_size); + ~ChannelInfo (); - RingBufferNPT::rw_vector playback_vector; - RingBufferNPT::rw_vector capture_vector; + Sample *playback_wrap_buffer; + Sample *capture_wrap_buffer; + Sample *speed_buffer; + + float peak_power; + + boost::shared_ptr fades_source; + boost::shared_ptr write_source; - RingBufferNPT * capture_transition_buf; - // the following are used in the butler thread only - nframes_t curr_capture_cnt; + /// the Port that our audio data comes from + Port *source; + Sample *current_capture_buffer; + Sample *current_playback_buffer; + + RingBufferNPT *playback_buf; + RingBufferNPT *capture_buf; + + Sample* scrub_buffer; + Sample* scrub_forward_buffer; + Sample* scrub_reverse_buffer; + + RingBufferNPT::rw_vector playback_vector; + RingBufferNPT::rw_vector capture_vector; + + RingBufferNPT * capture_transition_buf; + // the following are used in the butler thread only + nframes_t curr_capture_cnt; }; + typedef std::vector ChannelList; + + void process_varispeed_playback(nframes_t nframes, boost::shared_ptr c); + /* The two central butler operations */ - int do_flush (Session::RunContext context, bool force = false); + int do_flush (RunContext context, bool force = false); int do_refill () { return _do_refill(_mixdown_buffer, _gain_buffer); } - int do_refill_with_alloc(); + int do_refill_with_alloc (); int read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, - nframes_t& start, nframes_t cnt, - ChannelInfo& channel_info, int channel, bool reversed); + nframes_t& start, nframes_t cnt, + ChannelInfo* channel_info, int channel, bool reversed); - void finish_capture (bool rec_monitors_input); + + void finish_capture (bool rec_monitors_input, boost::shared_ptr); void transport_stopped (struct tm&, time_t, bool abort); + void transport_looped (nframes_t transport_frame); void init (Diskstream::Flag); @@ -244,16 +302,17 @@ class AudioDiskstream : public Diskstream static Sample* _mixdown_buffer; static gain_t* _gain_buffer; - // Uh, /really/ private? (there should probably be less friends of Diskstream) - int _do_refill (Sample *mixdown_buffer, float *gain_buffer); - - std::vector > capturing_sources; - typedef vector ChannelList; - ChannelList channels; + SerializedRCUManager channels; + + /* really */ + private: + int _do_refill (Sample *mixdown_buffer, float *gain_buffer); + + int add_channel_to (boost::shared_ptr, uint32_t how_many); + int remove_channel_from (boost::shared_ptr, uint32_t how_many); - bool can_become_destructive () const; }; } // namespace ARDOUR