status_t AudioFilterNode::PrepareToConnect(
const media_source& source,
const media_destination& destination,
media_format* ioFormat,
media_source* outSource,
char* outName) {
status_t err;
char formatStr[256];
string_for_format(*ioFormat, formatStr, 255);
PRINT(("AudioFilterNode::PrepareToConnect()\n"
"\tproposed format: %s\n", formatStr));
if(source != m_output.source) {
PRINT(("\tBad source.\n"));
return B_MEDIA_BAD_SOURCE;
}
if(m_output.destination != media_destination::null) {
PRINT(("\tAlready connected.\n"));
return B_MEDIA_ALREADY_CONNECTED;
}
if(ioFormat->type != B_MEDIA_RAW_AUDIO) {
PRINT(("\tBad format type.\n"));
return B_MEDIA_BAD_FORMAT;
}
// do a final validity check:
media_format required;
required.type = B_MEDIA_RAW_AUDIO;
err = getRequiredOutputFormat(required);
ASSERT(err == B_OK);
err = validateProposedOutputFormat(
required, *ioFormat);
if(err < B_OK) {
// no go
return err;
}
// fill in wildcards
specializeOutputFormat(*ioFormat);
string_for_format(*ioFormat, formatStr, 255);
PRINT(("FINAL FORMAT: %s\n", formatStr));
// reserve the output
m_output.destination = destination;
m_output.format = *ioFormat;
// pass back source & output name
*outSource = m_output.source;
strncpy(outName, m_output.name, B_MEDIA_NAME_LENGTH);
return B_OK;
}
status_t FlangerNode::PrepareToConnect(
const media_source& source,
const media_destination& destination,
media_format* pioFormat,
media_source* poSource,
char* poName) {
char formatStr[256];
string_for_format(*pioFormat, formatStr, 255);
PRINT(("FlangerNode::PrepareToConnect()\n"
"\tproposed format: %s\n", formatStr));
if(source != m_output.source) {
PRINT(("\tBad source.\n"));
return B_MEDIA_BAD_SOURCE;
}
if(m_output.destination != media_destination::null) {
PRINT(("\tAlready connected.\n"));
return B_MEDIA_ALREADY_CONNECTED;
}
if(pioFormat->type != B_MEDIA_RAW_AUDIO) {
PRINT(("\tBad format type.\n"));
return B_MEDIA_BAD_FORMAT;
}
// do a final validity check:
status_t err = validateProposedFormat(
(m_format.u.raw_audio.format != media_raw_audio_format::wildcard.format) ?
m_format :
m_preferredFormat,
*pioFormat);
if(err < B_OK) {
// no go
return err;
}
// fill in wildcards
specializeOutputFormat(*pioFormat);
// reserve the output
m_output.destination = destination;
m_output.format = *pioFormat;
// pass back source & output name
*poSource = m_output.source;
strncpy(poName, m_output.name, B_MEDIA_NAME_LENGTH);
return B_OK;
}
