status Track::copyMarkers(TrackSetup *setup)
{
if ((markerCount = setup->markerCount) == 0)
{
markers = NULL;
return AF_SUCCEED;
}
markers = _af_marker_new(markerCount);
if (!markers)
return AF_FAIL;
for (int i=0; i<markerCount; i++)
{
markers[i].id = setup->markers[i].id;
markers[i].name = _af_strdup(setup->markers[i].name);
if (!markers[i].name)
return AF_FAIL;
markers[i].comment = _af_strdup(setup->markers[i].comment);
if (!markers[i].comment)
return AF_FAIL;
markers[i].position = 0;
}
return AF_SUCCEED;
}
/*
Parse marker chunks, which contain the positions and names of loop markers.
*/
static status ParseMARK (AFfilehandle file, AFvirtualfile *fh, u_int32_t type,
size_t size)
{
_Track *track;
int i;
u_int16_t numMarkers;
assert(!memcmp(&type, "MARK", 4));
track = _af_filehandle_get_track(file, AF_DEFAULT_TRACK);
af_fread(&numMarkers, sizeof (u_int16_t), 1, fh);
numMarkers = BENDIAN_TO_HOST_INT16(numMarkers);
track->markerCount = numMarkers;
if (numMarkers)
track->markers = _af_marker_new(numMarkers);
for (i=0; i<numMarkers; i++)
{
u_int16_t markerID = 0;
u_int32_t markerPosition = 0;
u_int8_t sizeByte = 0;
char *markerName = NULL;
af_fread(&markerID, sizeof (u_int16_t), 1, fh);
markerID = BENDIAN_TO_HOST_INT16(markerID);
af_fread(&markerPosition, sizeof (u_int32_t), 1, fh);
markerPosition = BENDIAN_TO_HOST_INT32(markerPosition);
af_fread(&sizeByte, sizeof (unsigned char), 1, fh);
markerName = _af_malloc(sizeByte + 1);
af_fread(markerName, sizeof (unsigned char), sizeByte, fh);
markerName[sizeByte] = '\0';
#ifdef DEBUG
printf("marker id: %d, position: %d, name: %s\n",
markerID, markerPosition, markerName);
printf("size byte: %d\n", sizeByte);
#endif
/*
If sizeByte is even, then 1+sizeByte (the length
of the string) is odd. Skip an extra byte to
make it even.
*/
if ((sizeByte % 2) == 0)
af_fseek(fh, 1, SEEK_CUR);
track->markers[i].id = markerID;
track->markers[i].position = markerPosition;
track->markers[i].name = markerName;
track->markers[i].comment = _af_strdup("");
}
return AF_SUCCEED;
}
status WAVEFile::parseCues(const Tag &id, uint32_t size)
{
Track *track = getTrack();
uint32_t markerCount;
readU32(&markerCount);
track->markerCount = markerCount;
if (markerCount == 0)
{
track->markers = NULL;
return AF_SUCCEED;
}
if ((track->markers = _af_marker_new(markerCount)) == NULL)
return AF_FAIL;
for (unsigned i=0; i<markerCount; i++)
{
uint32_t id, position, chunkid;
uint32_t chunkByteOffset, blockByteOffset;
uint32_t sampleFrameOffset;
Marker *marker = &track->markers[i];
readU32(&id);
readU32(&position);
readU32(&chunkid);
readU32(&chunkByteOffset);
readU32(&blockByteOffset);
/*
sampleFrameOffset represents the position of
the mark in units of frames.
*/
readU32(&sampleFrameOffset);
marker->id = id;
marker->position = sampleFrameOffset;
marker->name = _af_strdup("");
marker->comment = _af_strdup("");
}
return AF_SUCCEED;
}
