static int tc_v4l2_video_get_capture_buffer_count(V4L2Source *vs)
{
struct v4l2_requestbuffers reqbuf;
int err = 0;
reqbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
reqbuf.memory = V4L2_MEMORY_MMAP;
reqbuf.count = TC_V4L2_BUFFERS_NUM;
err = v4l2_ioctl(vs->video_fd, VIDIOC_REQBUFS, &reqbuf);
if (err < 0) {
tc_log_perror(MOD_NAME, "VIDIOC_REQBUFS");
return TC_ERROR;
}
vs->buffers_count = TC_MIN(reqbuf.count, TC_V4L2_BUFFERS_NUM);
if (vs->buffers_count < 2) {
tc_log_error(MOD_NAME, "not enough buffers for capture");
return TC_ERROR;
}
if (verbose_flag > TC_INFO) {
tc_log_info(MOD_NAME, "%i buffers available (maximum supported: %i)",
vs->buffers_count, TC_V4L2_BUFFERS_NUM);
}
return TC_OK;
}
static int modrequest_fill(TCFactory factory, ModRequest *mods,
size_t maxmods, size_t *modnum, glob_t *globbuf)
{
char modstr[TC_BUF_MIN];
int i = 0, count = 0, lim = 0;
if (!factory || !mods || !globbuf) {
return TC_ERROR;
}
if (maxmods < globbuf->gl_pathc) {
tc_log_warn(EXE, "found %u candidate modules, but "
"only %u allowed (dropping remaining)",
(unsigned)globbuf->gl_pathc, (unsigned)maxmods);
}
lim = TC_MIN(maxmods, globbuf->gl_pathc);
for (i = 0; i < lim; i++) {
int ret;
ret = parse_path(globbuf->gl_pathv[i], modstr, TC_BUF_MIN);
if (ret != 0) {
tc_log_warn(EXE, "error while parsing '%s', skipping",
globbuf->gl_pathv[i]);
continue;
}
ret = modrequest_load(factory, &mods[i], modstr);
if (ret != 0) {
tc_log_warn(EXE, "error while loading '%s', skipping",
modstr);
continue;
}
count++;
}
if (modnum != NULL) {
*modnum += count;
}
return TC_OK;
}
