* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#define __STDC_LIMIT_MACROS 1
#include <cassert>
#include <iostream>
+#include <stdint.h>
#include "evoral/Event.hpp"
#include "evoral/SMF.hpp"
#include "libsmf/smf.h"
namespace Evoral {
-template<typename Time>
-SMF<Time>::~SMF()
+SMF::~SMF()
{
if (_smf) {
smf_delete(_smf);
}
}
-/** Attempt to open the SMF file for reading and writing.
+uint16_t
+SMF::num_tracks() const
+{
+ return _smf->number_of_tracks;
+}
+
+uint16_t
+SMF::ppqn() const
+{
+ return _smf->ppqn;
+}
+
+/** Seek to the specified track (1-based indexing)
+ * \return 0 on success
+ */
+int
+SMF::seek_to_track(int track)
+{
+ _smf_track = smf_get_track_by_number(_smf, track);
+ if (_smf_track != NULL) {
+ _smf_track->next_event_number = (_smf_track->number_of_events == 0) ? 0 : 1;
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+/** Attempt to open the SMF file for reading and/or writing.
*
- * Currently SMF is always read/write.
+ * \return 0 on success
+ * -1 if the file can not be opened or created
+ * -2 if the file exists but specified track does not exist
+ */
+int
+SMF::open(const std::string& path, int track) THROW_FILE_ERROR
+{
+ assert(track >= 1);
+ if (_smf) {
+ smf_delete(_smf);
+ }
+
+ _path = path;
+ _smf = smf_load(_path.c_str());
+ if (_smf == NULL) {
+ return -1;
+ }
+
+ _smf_track = smf_get_track_by_number(_smf, track);
+ if (!_smf_track)
+ return -2;
+
+ //cerr << "Track " << track << " # events: " << _smf_track->number_of_events << endl;
+ if (_smf_track->number_of_events == 0) {
+ _smf_track->next_event_number = 0;
+ _empty = true;
+ } else {
+ _smf_track->next_event_number = 1;
+ _empty = false;
+ }
+
+ return 0;
+}
+
+
+/** Attempt to create a new SMF file for reading and/or writing.
*
* \return 0 on success
- * -1 if the file can not be opened
+ * -1 if the file can not be created
+ * -2 if the track can not be created
*/
-template<typename Time>
int
-SMF<Time>::open(const std::string& path) THROW_FILE_ERROR
+SMF::create(const std::string& path, int track, uint16_t ppqn) THROW_FILE_ERROR
{
+ assert(track >= 1);
if (_smf) {
smf_delete(_smf);
}
_path = path;
- assert(_path != "");
+
+ _smf = smf_new();
+ if (smf_set_ppqn(_smf, ppqn) != 0) {
+ throw FileError();
+ }
- _smf = smf_load(_path.c_str());
- if (!_smf) {
- _smf = smf_new();
- if (smf_set_ppqn(_smf, _ppqn) != 0) {
- throw typename MIDIFile<Time>::FileError();
- }
-
- if(_smf == NULL) {
- return -1;
- }
-
+ if (_smf == NULL) {
+ return -1;
+ }
+
+ for (int i = 0; i < track; ++i) {
_smf_track = smf_track_new();
assert(_smf_track);
-
smf_add_track(_smf, _smf_track);
}
-
- _smf_track = smf_get_track_by_number(_smf, 1);
- assert(_smf_track);
- cerr << "number of events: " << _smf_track->number_of_events << endl;
-
- _empty = !(_smf_track->number_of_events > 0);
+ _smf_track = smf_get_track_by_number(_smf, track);
+ if (!_smf_track)
+ return -2;
+
+ _smf_track->next_event_number = 0;
+ _empty = true;
return 0;
}
-template<typename Time>
void
-SMF<Time>::close() THROW_FILE_ERROR
+SMF::close() THROW_FILE_ERROR
{
if (_smf) {
if (smf_save(_smf, _path.c_str()) != 0) {
- throw typename MIDIFile<Time>::FileError();
+ throw FileError();
}
smf_delete(_smf);
_smf = 0;
}
}
-template<typename Time>
void
-SMF<Time>::seek_to_start() const
+SMF::seek_to_start() const
{
- smf_rewind(_smf);
+ _smf_track->next_event_number = 1;
}
/** Read an event from the current position in file.
* will have it's time field set to it's delta time, in SMF tempo-based ticks, using the
* rate given by ppqn() (it is the caller's responsibility to calculate a real time).
*
- * \a size should be the capacity of \a buf. If it is not large enough, \a buf will
- * be freed and a new buffer allocated in its place, the size of which will be placed
- * in size.
+ * \a buf must be a pointer to a buffer allocated with malloc, or a pointer to NULL.
+ * \a size must be the capacity of \a buf. If it is not large enough, \a buf will
+ * be reallocated and *size will be set to the new size of buf.
*
- * Returns event length (including status byte) on success, 0 if event was
- * skipped (eg a meta event), or -1 on EOF (or end of track).
+ * \return event length (including status byte) on success, 0 if event was
+ * skipped (e.g. a meta event), or -1 on EOF (or end of track).
*/
-template<typename Time>
int
-SMF<Time>::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
+SMF::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
{
- smf_event_t *event;
+ smf_event_t* event;
assert(delta_t);
assert(size);
assert(buf);
- if ((event = smf_get_next_event(_smf)) != NULL) {
+ if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
if (smf_event_is_metadata(event)) {
return 0;
}
}
memcpy(*buf, event->midi_buffer, size_t(event_size));
*size = event_size;
+
+ /*printf("SMF::read_event:\n");
+ for (size_t i = 0; i < *size; ++i) {
+ printf("%X ", (*buf)[i]);
+ } printf("\n");*/
return event_size;
} else {
}
}
-template<typename Time>
void
-SMF<Time>::append_event_delta(uint32_t delta_t, const Event<Time>& ev)
+SMF::append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf)
{
- assert(ev.size() > 0);
+ if (size == 0) {
+ return;
+ }
- smf_event_t *event;
+ /*printf("SMF::append_event_delta:\n");
+ for (size_t i = 0; i < size; ++i) {
+ printf("%X ", buf[i]);
+ } printf("\n");*/
- event = smf_event_new_from_pointer((void *) ev.buffer(), int(ev.size()));
+ smf_event_t* event;
+
+ event = smf_event_new_from_pointer(buf, size);
assert(event != NULL);
- memcpy(event->midi_buffer, ev.buffer(), ev.size());
-
assert(_smf_track);
- smf_track_add_event_delta_pulses (_smf_track, event, int(delta_t));
- _last_ev_time = ev.time();
-
- if (ev.size() > 0) {
- _empty = false;
- }
+ smf_track_add_event_delta_pulses(_smf_track, event, delta_t);
+ _empty = false;
}
-template<typename Time>
void
-SMF<Time>::begin_write()
+SMF::begin_write()
{
assert(_smf_track);
smf_track_delete(_smf_track);
smf_add_track(_smf, _smf_track);
assert(_smf->number_of_tracks == 1);
-
- _last_ev_time = 0;
}
-template<typename Time>
void
-SMF<Time>::end_write() THROW_FILE_ERROR
+SMF::end_write() THROW_FILE_ERROR
{
if (smf_save(_smf, _path.c_str()) != 0)
- throw typename MIDIFile<Time>::FileError();
+ throw FileError();
}
-template class SMF<double>;
} // namespace Evoral
projects / ardour.git / blobdiff