count_nonzero_bits
channel_count = count_nonzero_bits(all_bits);
if (count_nonzero_bits(format->channel_mask) != 4) {
if (count_nonzero_bits(format->channel_mask) != 5) {
if (count_nonzero_bits(format->channel_mask) != 6) {
if (count_nonzero_bits(format->channel_mask) != 7) {
if (count_nonzero_bits(format->channel_mask) != 8) {
if (count_nonzero_bits(format->channel_mask) != (int)format->channel_count) {
if (channel > count_nonzero_bits(all_channel_masks)) {
if (count_nonzero_bits(format->channel_mask) != 1) {
if (count_nonzero_bits(format->channel_mask) != 2) {
if (count_nonzero_bits(format->channel_mask) != 3) {
int count_nonzero_bits(uint32 value);