15   for (size_t channels = 1; channels < 100; channels++) {  in TEST()  local
18       .channels(channels)  in TEST()
25   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
28       .channels(channels)  in TEST()
36   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
39       .channels(channels)  in TEST()
47   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
51         .channels(channels)  in TEST()
60   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
64         .channels(channels)  in TEST()
73   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
77         .channels(channels)  in TEST()
86   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
90         .channels(channels)  in TEST()
99   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
103         .channels(channels)  in TEST()
112   for (size_t channels = 1; channels < 100; channels++) {  in TEST()  local
115       .channels(channels)  in TEST()
122   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
125       .channels(channels)  in TEST()
133   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
136       .channels(channels)  in TEST()
144   for (size_t channels = 1; channels < 100; channels += 15) {  in TEST()  local
147       .channels(channels)  in TEST()