status_t Camera3Stream::getInputBuffer(camera3_stream_buffer *buffer) {
ATRACE_CALL();
Mutex::Autolock l(mLock);
status_t res = getInputBufferLocked(buffer);
if (res == OK) {
fireBufferListenersLocked(*buffer, /*acquired*/true, /*output*/false);
}
return res;
}
status_t Camera3Stream::getInputBuffer(camera3_stream_buffer *buffer) {
ATRACE_CALL();
Mutex::Autolock l(mLock);
status_t res = OK;
// This function should be only called when the stream is configured already.
if (mState != STATE_CONFIGURED) {
ALOGE("%s: Stream %d: Can't get input buffers if stream is not in CONFIGURED state %d",
__FUNCTION__, mId, mState);
return INVALID_OPERATION;
}
// Wait for new buffer returned back if we are running into the limit.
if (getHandoutInputBufferCountLocked() == camera3_stream::max_buffers) {
ALOGV("%s: Already dequeued max input buffers (%d), wait for next returned one.",
__FUNCTION__, camera3_stream::max_buffers);
res = mInputBufferReturnedSignal.waitRelative(mLock, kWaitForBufferDuration);
if (res != OK) {
if (res == TIMED_OUT) {
ALOGE("%s: wait for input buffer return timed out after %lldms", __FUNCTION__,
kWaitForBufferDuration / 1000000LL);
}
return res;
}
}
res = getInputBufferLocked(buffer);
if (res == OK) {
fireBufferListenersLocked(*buffer, /*acquired*/true, /*output*/false);
if (buffer->buffer) {
mOutstandingBuffers.push_back(*buffer->buffer);
}
}
return res;
}
