int main(int argc, char *argv[])
{
// print library versions (the actual loaded versions, if dynamically linked)
printf("Versions:\n%s\n", LoadedVersions::Get().GetVersionsList().c_str());
if (argc < 2)
{
fprintf(stderr, "Usage: read-adm-bwf <bwf-file>\n");
exit(1);
}
// ADM aware WAV file
ADMRIFFFile file;
if (file.Open(argv[1]))
{
// a list of ADM object types to list
static const char *types[] = {
"audioProgramme",
"audioContent",
"audioObject",
"audioChannelFormat",
"audioTrackUID",
};
// get access to ADM data object
const ADMData *adm = file.GetADM();
uint_t j;
printf("Opened '%s' okay, %u channels at %luHz (%u bytes per sample)\n", argv[1], file.GetChannels(), (ulong_t)file.GetSampleRate(), (uint_t)file.GetBytesPerSample());
// list ADM objects of different types
for (j = 0; j < NUMBEROF(types); j++)
{
// list objects of a certain type
std::vector<const ADMObject *>list;
const char *type = types[j];
uint_t k;
// get list of objects of specified type
adm->GetObjects(type, list);
if (list.size() > 0)
{
printf("Objects of type '%s':\n", type);
for (k = 0; k < list.size(); k++)
{
const ADMObject *obj = list[k];
// print out information about the object
printf(" %s\n", obj->ToString().c_str());
}
printf("\n");
}
else printf("No objects of type '%s'!\n", type);
}
// access the audio of an audio object
{
std::vector<const ADMObject *>list;
// get a list of audioObjects
adm->GetObjects("audioObject", list);
if (list.size() > 0)
{
const ADMAudioObject *obj;
// pick last object
if ((obj = dynamic_cast<const ADMAudioObject *>(list.back())) != NULL)
{
// create audio samples handler for the audio object
ADMAudioFileSamples handler(file.GetSamples(), obj);
std::vector<Sample_t> samples;
uint_t n, nsamples = 1024;
printf("Reading audio from %s (%u channels)\n", obj->ToString().c_str(), handler.GetChannels());
// make buffer for 1024 frames worth of samples
samples.resize(handler.GetChannels() * nsamples);
// read samples (start channel and interleaving are handled by handler)
while ((handler.GetSamplePosition() < 16384) && ((n = handler.ReadSamples(&samples[0], 0, handler.GetChannels(), nsamples)) > 0)) // arbitrary stop point of 16384!
{
printf("%u/%u sample frames read, sample position %s/%s\n", n, nsamples, StringFrom(handler.GetSamplePosition()).c_str(), StringFrom(handler.GetSampleLength()).c_str());
}
}
}
else fprintf(stderr, "No audio objects in '%s'!\n", argv[1]);
}
// access raw audio data of entire file
{
// get audio samples handler for entire file
SoundFileSamples *handler = file.GetSamples();
UNUSED_PARAMETER(handler);
/*
* handler->ReadSamples(...) works just like handler.ReadSamples(...) above but on the entire file instead of just a single audio object
*
*/
}
}
else fprintf(stderr, "Failed to open file '%s' for reading!\n", argv[1]);
return 0;
}
int main(void)
{
// ensure libraries are set up
bbcat_register_bbcat_fileio();
// ADM aware WAV file
ADMRIFFFile file;
const char *filename = "adm-4gb-bwf.wav";
// IMPORTANT: create basic ADM here - if this is not done, the file will be a plain WAV file!
file.CreateADM();
// create file
if (file.Create(filename, 48000, 32))
{
ADMData *adm = file.GetADM();
if (adm)
{
ADMData::OBJECTNAMES names;
printf("Created '%s' okay, %u channels at %luHz (%u bytes per sample)\n", filename, file.GetChannels(), (ulong_t)file.GetSampleRate(), (uint_t)file.GetBytesPerSample());
// set programme name
// if an audioProgramme object of this name doesn't exist, one will be created
names.programmeName = "ADM Test Programme";
// set content name
// if an audioContent object of this name doesn't exist, one will be created
names.contentName = "ADM Test Content";
// create tracks, channels and streams
uint_t t;
const ADMData::TRACKLIST& tracklist = adm->GetTrackList();
for (t = 0; t < tracklist.size(); t++)
{
std::string trackname;
printf("------------- Track %2u -----------------\n", t + 1);
// create default audioTrackFormat name (used for audioStreamFormat objects as well)
Printf(trackname, "Track %u", t + 1);
names.trackNumber = t;
// derive channel and stream names from track name
names.channelFormatName = trackname;
names.streamFormatName = "PCM_" + trackname;
names.trackFormatName = "PCM_" + trackname;
// set object name
// create 4 objects, each of 4 tracks
names.objectName = ""; // need this because Printf() APPENDS!
Printf(names.objectName, "Object %u", 1 + (t / 4));
// set pack name from object name
// create 4 packs, each of 4 tracks
names.packFormatName = ""; // need this because Printf() APPENDS!
Printf(names.packFormatName, "Pack %u", 1 + (t / 4));
// set default typeLabel
names.typeLabel = ADMObject::TypeLabel_Objects;
adm->CreateObjects(names);
// note how the programme and content names are left in place in 'names'
// this is necessary to ensure that things are linked up properly
}
}
else fprintf(stderr, "File does not have an ADM associated with it, did you forget to create one?\n");
// write audio
const uint_t nchannels = file.GetChannels();
std::vector<sint32_t> audio;
double fs = (double)file.GetSampleRate();
double level = dBToGain(-40.0);
uint64_t i, nsamples = (uint64_t)1000 * (uint64_t)file.GetSampleRate();
uint_t step = file.GetSampleRate() * 10;
uint_t j, pc = ~0;
UNUSED_PARAMETER(fs);
UNUSED_PARAMETER(level);
audio.resize(step * nchannels);
// write 1000s worth of samples
for (i = 0; i < nsamples; i += step)
{
{
uint_t index = (uint_t)(i / step);
for (j = 0; j < nchannels; j++)
{
AudioObjectParameters params;
Position pos;
pos.polar = true;
pos.pos.az = (double)(index + j) * 20.0;
pos.pos.el = (double)j / (double)file.GetChannels() * 60.0;
pos.pos.d = 1.0;
params.SetPosition(pos);
// set some extra parameters
params.SetWidth((float)j * .2);
params.SetDepth((float)j * .4);
params.SetHeight((float)j * .3);
if (j < 2)
{
params.SetScreenEdgeLock("azimuth", j ? "right" : "left");
params.SetScreenEdgeLock("elevation", j ? "bottom" : "top");
}
else if (j == 2)
{
params.AddExcludedZone("left", -1, -1, -1, -.8, 1, 1);
params.AddExcludedZone("right", .8, -1, -1, 1.0, 1, 1);
}
else
{
params.SetObjectImportance(5 + j - 3);
params.SetChannelImportance(2 + j - 3);
params.SetInteract(j != 3);
params.SetDisableDucking(j == 3);
}
file.SetObjectParameters(j, params);
}
}
// write a frame of audio
file.WriteSamples(&audio[0], 0, nchannels, step);
uint_t pc1 = (uint_t)((i * 100) / nsamples);
if (pc1 != pc)
{
pc = pc1;
printf("\rWriting... %u%% done", pc);
fflush(stdout);
}
}
printf("\n");
file.Close();
}
else fprintf(stderr, "Failed to open file '%s' for writing!\n", filename);
return 0;
}
