// figure processing latency by doing 'dry runs' of filterBuffer()
bigtime_t StepMotionBlurFilter::calcProcessingLatency() {
PRINT(("StepMotionBlurFilter::calcProcessingLatency()\n"));
if(m_output.destination == media_destination::null) {
PRINT(("\tNot connected.\n"));
return 0LL;
}
// allocate a temporary buffer group
BBufferGroup* pTestGroup = new BBufferGroup(m_output.format.u.raw_video.display.line_width * m_output.format.u.raw_video.display.line_count *4, 1);
// fetch a buffer
BBuffer* pBuffer = pTestGroup->RequestBuffer(m_output.format.u.raw_video.display.line_width * m_output.format.u.raw_video.display.line_count * 4);
ASSERT(pBuffer);
pBuffer->Header()->type = B_MEDIA_RAW_VIDEO;
pBuffer->Header()->size_used = m_output.format.u.raw_video.display.line_width * m_output.format.u.raw_video.display.line_count * 4;
// run the test
bigtime_t preTest = system_time();
filterBuffer(pBuffer);
bigtime_t elapsed = system_time()-preTest;
// clean up
pBuffer->Recycle();
delete pTestGroup;
// reset filter state
initFilter();
return elapsed;
}
// figure processing latency by doing 'dry runs' of filterBuffer()
bigtime_t FlangerNode::calcProcessingLatency() {
PRINT(("FlangerNode::calcProcessingLatency()\n"));
if(m_output.destination == media_destination::null) {
PRINT(("\tNot connected.\n"));
return 0LL;
}
// allocate a temporary buffer group
BBufferGroup* pTestGroup = new BBufferGroup(
m_output.format.u.raw_audio.buffer_size, 1);
// fetch a buffer
BBuffer* pBuffer = pTestGroup->RequestBuffer(
m_output.format.u.raw_audio.buffer_size);
ASSERT(pBuffer);
pBuffer->Header()->type = B_MEDIA_RAW_AUDIO;
pBuffer->Header()->size_used = m_output.format.u.raw_audio.buffer_size;
// run the test
bigtime_t preTest = system_time();
filterBuffer(pBuffer);
bigtime_t elapsed = system_time()-preTest;
// clean up
pBuffer->Recycle();
delete pTestGroup;
// reset filter state
initFilter();
return elapsed;
}
// figure processing latency by doing 'dry runs' of processBuffer()
bigtime_t AudioFilterNode::calcProcessingLatency() {
PRINT(("AudioFilterNode::calcProcessingLatency()\n"));
ASSERT(m_input.source != media_source::null);
ASSERT(m_output.destination != media_destination::null);
ASSERT(m_op);
// initialize filter
m_op->init();
size_t maxSize = max_c(
m_input.format.u.raw_audio.buffer_size,
m_output.format.u.raw_audio.buffer_size);
// allocate a temporary buffer group
BBufferGroup* testGroup = new BBufferGroup(
maxSize, 1);
// fetch a buffer big enough for in-place processing
BBuffer* buffer = testGroup->RequestBuffer(
maxSize, -1);
ASSERT(buffer);
buffer->Header()->type = B_MEDIA_RAW_AUDIO;
buffer->Header()->size_used = m_input.format.u.raw_audio.buffer_size;
// run the test
bigtime_t preTest = system_time();
processBuffer(buffer, buffer);
bigtime_t elapsed = system_time()-preTest;
// clean up
buffer->Recycle();
delete testGroup;
// reset filter state
m_op->init();
return elapsed;// + 100000LL;
}
