bool takeOneOutputFrame(int fd, int index = -1/* if index is not -1, simple enque it*/)
{
struct v4l2_buffer buf;
struct v4l2_plane planes[1];
int ioctlRet = -1;
memset(&buf, 0, sizeof(buf));
memset(planes, 0, sizeof(planes));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; //it indicates output buffer type
buf.memory = outputMemoryType; // chromeos v4l2vea uses this mode only
buf.m.planes = planes;
buf.length = 1;
if (index == -1) {
ioctlRet = YamiV4L2_Ioctl(fd, VIDIOC_DQBUF, &buf);
if (isEncodeEOS) {
if (ioctlRet == -1) {
isOutputEOS = true;
YamiV4L2_SetDevicePollInterrupt(fd);
return true;
}
}
if (ioctlRet == -1)
return false;
if (!writeOneOutputFrame(outputFrames[buf.index], buf.bytesused)) {
ASSERT(0);
return false;
}
} else {
buf.index = index;
}
ioctlRet = YamiV4L2_Ioctl(fd, VIDIOC_QBUF, &buf);
ASSERT(ioctlRet != -1);
return true;
}
int32_t setDevicePollInterrupt()
{
return YamiV4L2_SetDevicePollInterrupt(m_fd);
}