*/
#include "pbd/compose.h"
+#include "pbd/error.h"
#include "ardour/debug.h"
#include "ardour/midi_ring_buffer.h"
*/
template<typename T>
size_t
-MidiRingBuffer<T>::read(MidiBuffer& dst, framepos_t start, framepos_t end, framecnt_t offset)
+MidiRingBuffer<T>::read(MidiBuffer& dst, framepos_t start, framepos_t end, framecnt_t offset, bool stop_on_overflow_in_dst)
{
if (this->read_space() == 0) {
return 0;
to the MidiBuffer with adjusted times. The situation is as follows:
session frames----------------------------->
-
+
| | |
start_of_loop start end_of_loop
size_t count = 0;
- while (this->read_space() >= sizeof(T) + sizeof(Evoral::EventType) + sizeof(uint32_t)) {
+ const size_t prefix_size = sizeof(T) + sizeof(Evoral::EventType) + sizeof(uint32_t);
+
+ while (this->read_space() >= prefix_size) {
+
+ uint8_t peekbuf[prefix_size];
+ bool success;
+
+ success = this->peek (peekbuf, prefix_size);
+ /* this cannot fail, because we've already verified that there
+ is prefix_space to read
+ */
+ assert (success);
- this->peek ((uint8_t*) &ev_time, sizeof (T));
+ ev_time = *((T*) peekbuf);
+ ev_type = *((Evoral::EventType*)(peekbuf + sizeof (T)));
+ ev_size = *((uint32_t*)(peekbuf + sizeof(T) + sizeof (Evoral::EventType)));
if (ev_time + loop_offset >= end) {
DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MRB event @ %1 past end @ %2\n", ev_time, end));
DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MRB event @ %1 in range %2 .. %3\n", ev_time, start, end));
}
- bool success = read_prefix(&ev_time, &ev_type, &ev_size);
- if (!success) {
- cerr << "WARNING: error reading event prefix from MIDI ring" << endl;
- continue;
- }
+ assert(ev_time >= start);
- // This event marks a loop end (i.e. the next event's timestamp will be non-monotonic)
+ ev_time -= start;
+ ev_time += offset;
+
+ // This event marks a loop end (i.e. the next event's timestamp
+ // will be non-monotonic). Don't write it into the buffer - the
+ // significance of this event ends here.
+
if (ev_type == LoopEventType) {
assert (ev_size == sizeof (framepos_t));
framepos_t loop_start;
read_contents (ev_size, (uint8_t *) &loop_start);
-
loop_offset = ev_time - loop_start;
+ _tracker.resolve_notes (dst, ev_time);
continue;
}
+ /* we're good to go ahead and read the data now but since we
+ * have the prefix data already, just skip over that
+ */
+ this->increment_read_ptr (prefix_size);
ev_time += loop_offset;
uint8_t status;
if (is_channel_event(status) && get_channel_mode() == FilterChannels) {
const uint8_t channel = status & 0x0F;
if (!(get_channel_mask() & (1L << channel))) {
- // cerr << "MRB skipping event due to channel mask" << endl;
+ DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MRB skipping event (%3 bytes) due to channel mask (mask = %1 chn = %2)\n",
+ get_channel_mask(), (int) channel, ev_size));
this->increment_read_ptr (ev_size); // Advance read pointer to next event
continue;
}
}
- assert(ev_time >= start);
-
- ev_time -= start;
- ev_time += offset;
-
- // write the timestamp to address (write_loc - 1)
- uint8_t* write_loc = dst.reserve(ev_time, ev_size);
- if (write_loc == NULL) {
- cerr << "MRB: Unable to reserve space in buffer, event skipped";
+ /* lets see if we are going to be able to write this event into dst.
+ */
+ uint8_t* write_loc = dst.reserve (ev_time, ev_size);
+ if (write_loc == 0) {
+ if (stop_on_overflow_in_dst) {
+ DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MidiRingBuffer: overflow in destination MIDI buffer, stopped after %1 events\n", count));
+ break;
+ }
+ error << "MRB: Unable to reserve space in buffer, event skipped" << endmsg;
this->increment_read_ptr (ev_size); // Advance read pointer to next event
continue;
}
#endif
if (success) {
+
+ if (is_note_on(write_loc[0]) ) {
+ _tracker.add (write_loc[1], write_loc[0] & 0xf);
+ } else if (is_note_off(write_loc[0])) {
+ _tracker.remove (write_loc[1], write_loc[0] & 0xf);
+ }
+
if (is_channel_event(status) && get_channel_mode() == ForceChannel) {
write_loc[0] = (write_loc[0] & 0xF0) | (get_channel_mask() & 0x0F);
}
return;
}
- str << this << ": Dump size = " << vec.len[0] + vec.len[1]
- << " r@ " << RingBufferNPT<uint8_t>::get_read_ptr()
+ str << this << ": Dump size = " << vec.len[0] + vec.len[1]
+ << " r@ " << RingBufferNPT<uint8_t>::get_read_ptr()
<< " w@" << RingBufferNPT<uint8_t>::get_write_ptr() << endl;
const uint8_t* end = buf + vec.len[0] + vec.len[1];
while (data < end) {
-
+
memcpy (&ev_time, data, sizeof (T));
data += sizeof (T);
str << "\ttime " << ev_time;
delete [] buf;
}
+template<typename T>
+void
+MidiRingBuffer<T>::reset_tracker ()
+{
+ _tracker.reset ();
+}
+
template class MidiRingBuffer<framepos_t>;
projects / ardour.git / blobdiff