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* bugfix: SMFSource: track footer overwrote the last MIDI event

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git-svn-id: svn://localhost/ardour2/branches/3.0@3319 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Hans Baier 2008-05-06 09:15:45 +00:00
parent cb88f8cce9
commit 8557d0c69f
3 changed files with 49 additions and 16 deletions
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12
libs/ardour/ardour/smf_source.h
View file

@ -111,7 +111,17 @@ class SMFSource : public MidiSource {
int open();
void close();
void seek_to_end();
/**
* This method is only used by flush_footer() to find the right seek position
* for the footer (at the end after recording or -4 offset ro SEEK_END
* if a footer is already present)
*/
void seek_to_footer_position();
/**
* write the track footer at the current seek position
*/
void write_footer();
void write_chunk_header(const char id[4], uint32_t length);

43
libs/ardour/smf_source.cc
View file

@ -170,7 +170,8 @@ SMFSource::open()
// Write a tentative header just to pad things out so writing happens in the right spot
flush_header();
flush_footer();
// this is the first footer written, so we dont need to seek for the footer
write_footer();
}
return (_fd == 0) ? -1 : 0;
@ -188,9 +189,24 @@ SMFSource::close()
}
void
SMFSource::seek_to_end()
SMFSource::seek_to_footer_position()
{
uint8_t buffer[4];
// lets check if there is a track end marker at the end of the data
fseek(_fd, -4, SEEK_END);
size_t read_bytes = fread(buffer, sizeof(uint8_t), 4, _fd);
if( (read_bytes == 4) &&
buffer[0] == 0x00 &&
buffer[1] == 0xFF &&
buffer[2] == 0x2F &&
buffer[3] == 0x00) {
// there is one, so overwrite it
fseek(_fd, -4, SEEK_END);
} else {
// there is none, so append
fseek(_fd, 0, SEEK_END);
}
}
int
@ -198,7 +214,7 @@ SMFSource::flush_header()
{
// FIXME: write timeline position somehow?
//cerr << "SMF Flushing header\n";
//cerr << path() << " SMF Flushing header\n";
assert(_fd);
@ -225,7 +241,8 @@ SMFSource::flush_header()
int
SMFSource::flush_footer()
{
seek_to_end();
//cerr << path() << " SMF Flushing footer\n";
seek_to_footer_position();
write_footer();
return 0;
@ -332,18 +349,15 @@ SMFSource::read_event(uint32_t* delta_t, uint32_t* size, Byte** buf) const
*size = event_size;
/*if (ev.buffer == NULL)
ev.buffer = (Byte*)malloc(sizeof(Byte) * ev.size);*/
(*buf)[0] = (unsigned char)status;
if (event_size > 1)
fread((*buf) + 1, 1, *size - 1, _fd);
/*printf("%s read event: delta = %u, size = %u, data = ", _name.c_str(), *delta_t, *size);
/*printf("SMFSource %s read event: delta = %u, size = %u, data = ", _name.c_str(), *delta_t, *size);
for (size_t i=0; i < *size; ++i) {
printf("%X ", (*buf)[i]);
}
printf("\n");*/
printf("\n"); */
return (int)*size;
}
@ -451,6 +465,11 @@ SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
time -= _timeline_position;
const MIDI::Event ev(time, size, buf);
if (! (ev.is_channel_event() || ev.is_smf_meta_event() || ev.is_sysex()) ) {
//cerr << "SMFSource: WARNING: caller tried to write non SMF-Event of type " << std::hex << int(ev.buffer()[0]) << endl;
continue;
}
append_event_unlocked(Frames, ev);
if (_model)
@ -472,12 +491,12 @@ SMFSource::write_unlocked (MidiRingBuffer& src, nframes_t cnt)
void
SMFSource::append_event_unlocked(EventTimeUnit unit, const MIDI::Event& ev)
{
/*printf("%s - append chan = %u, time = %lf, size = %u, data = ",
name().c_str(), (unsigned)ev.channel(), ev.time(), ev.size());
/*printf("SMFSource: %s - append_event_unlocked chan = %u, time = %lf, size = %u, data = ",
name().c_str(), (unsigned)ev.channel(), ev.time(), ev.size()); */
for (size_t i=0; i < ev.size(); ++i) {
printf("%X ", ev.buffer()[i]);
}
printf("\n");*/
printf("\n");
assert(ev.time() >= 0);
assert(ev.time() >= _last_ev_time);

6
libs/midi++2/midi++/event.h
View file

@ -181,13 +181,17 @@ struct Event {
inline uint8_t velocity() const { return (_buffer[2]); }
inline uint8_t cc_number() const { return (_buffer[1]); }
inline uint8_t cc_value() const { return (_buffer[2]); }
inline uint16_t pitch_bender_value() const { return (((0x7F & _buffer[1]) << 7) | (0x7F & _buffer[2])); }
inline uint8_t pitch_bender_lsb() const { return (_buffer[1]); }
inline uint8_t pitch_bender_msb() const { return (_buffer[2]); }
inline uint16_t pitch_bender_value() const { return (((0x7F & _buffer[2]) << 7) | (0x7F & _buffer[1])); }
inline uint8_t pgm_number() const { return (_buffer[1]); }
inline void set_pgm_number(uint8_t number){ _buffer[1] = number; }
inline uint8_t aftertouch() const { return (_buffer[1]); }
inline uint8_t channel_aftertouch() const { return (_buffer[1]); }
// midi channel events range from 0x80 to 0xE0
inline bool is_channel_event() const { return (0x80 <= type()) && (type() <= 0xE0); }
inline bool is_smf_meta_event() const { return _buffer[0] == 0xFF; }
inline bool is_sysex() const { return _buffer[0] == 0xF0 || _buffer[0] == 0xF7; }
inline const uint8_t* buffer() const { return _buffer; }
inline uint8_t*& buffer() { return _buffer; }