| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| </head> |
| <body> |
| <script> |
| |
| // If a constraint is specified, it should come back in getConstraints(). |
| promise_test(function() { |
| return navigator.mediaDevices.getUserMedia({audio: { echoCancellation: { exact: true}}}) |
| .then(function(s) { |
| constraints = s.getAudioTracks()[0].getConstraints(); |
| assert_equals(Object.keys(constraints).length, 1); |
| assert_true(constraints.hasOwnProperty('echoCancellation')); |
| assert_true(constraints.echoCancellation.exact); |
| }); |
| }, 'A set constraint is returned on getConstraints'); |
| |
| promise_test(function() { |
| return navigator.mediaDevices.getUserMedia({audio: { echoCancellation: { exact: true}, notKnownName: { exact: true }}}) |
| .then(function(s) { |
| constraints = s.getAudioTracks()[0].getConstraints(); |
| assert_equals(Object.keys(constraints).length, 1); |
| assert_false(constraints.hasOwnProperty('notKnownName')); |
| }); |
| }, 'An unknown constraint is NOT returned on getConstraints'); |
| |
| function constraintElementsEqual(a, b) { |
| if (a === b) |
| return true; |
| if (!(a instanceof Object)) |
| return false; |
| if (!(b instanceof Object)) |
| return false; |
| if (Object.keys(a).length != Object.keys(b).length) |
| return false; |
| for (var p in a) { |
| if (!a.hasOwnProperty(p)) |
| continue; // Skip prototypes and such things. |
| if (!b.hasOwnProperty(p)) |
| return false; |
| if (a[p] instanceof Object && b[p] instanceof Object) { |
| if (!constraintElementsEqual(a[p], b[p])) |
| return false; |
| continue; |
| } |
| if (a[p] !== b[p]) return false; // Simple types. |
| } |
| return true; |
| } |
| |
| promise_test(function() { |
| // We construct a constraint set that covers all defined constraints. |
| // All these constraints make sense for video. |
| const complexConstraintSet = { |
| width: { min: 30, max: 480 }, |
| height: { min: 30, max: 480, exact: 350 }, |
| aspectRatio: 1.3333333, |
| frameRate: { min: 0 }, |
| facingMode: "user" |
| }; |
| // These constraints are syntactically valid, but may cause rejection. |
| // They are included in an "advanced" constraint. |
| const ignorableConstraintSet = { |
| volume: { ideal: 1.0 }, |
| sampleRate: { ideal: 42 }, |
| sampleSize: { ideal: 3 }, |
| echoCancellation: { ideal: false }, |
| latency: { ideal: 0.22 }, |
| channelCount: { ideal: 2 }, |
| deviceId: { ideal: ["foo", "fooz"] }, |
| groupId: { ideal: ["bar", "baz"] } |
| }; |
| let complexConstraints = complexConstraintSet; |
| complexConstraints.advanced = [ ignorableConstraintSet ]; |
| |
| return navigator.mediaDevices.getUserMedia({video: complexConstraints}) |
| .then(function(s) { |
| constraints = s.getVideoTracks()[0].getConstraints(); |
| assert_true(constraintElementsEqual(constraints, complexConstraints), |
| "Unexpected result: In: " + JSON.stringify(complexConstraints, null, 2) + |
| " Out: " + JSON.stringify(constraints, null, 2)); |
| }); |
| }, 'All valid keys are returned for complex constraints'); |
| |
| // Syntax tests for constraints. |
| // These work by putting the constraints into an advanced constraint |
| // (so that they can be ignored), calling getUserMedia, and then |
| // inspecting the constraints. |
| // In advanced constraints, naked values mean "exact", and "exact" values |
| // are thus unwrapped, which is the opposite behavior from the "basic" |
| // constraint set (outside advanced). |
| |
| function constraintSyntaxTestWithChange(name, constraints, expected_result) { |
| promise_test(function() { |
| return navigator.mediaDevices.getUserMedia( |
| {'video': { 'advanced': [ constraints ]}}) |
| .then(function(s) { |
| var constraints_out = s.getVideoTracks()[0].getConstraints().advanced[0]; |
| assert_true(constraintElementsEqual(expected_result, constraints_out), |
| "Unexpected result: Expected: " + |
| JSON.stringify(expected_result, null, 2) + |
| " Out: " + JSON.stringify(constraints_out, null, 2)); |
| }) |
| }, name); |
| } |
| |
| function constraintSyntaxTest(name, constraints) { |
| constraintSyntaxTestWithChange(name, constraints, constraints); |
| } |
| |
| constraintSyntaxTest('Simple integer', { height: 42 }); |
| constraintSyntaxTest('Ideal integer', { height: { ideal: 42 }}); |
| constraintSyntaxTest('Min/max integer', { height: { min: 42, max: 43 }}); |
| constraintSyntaxTestWithChange('Exact unwrapped integer', |
| { height: { exact: 42 } }, { height: 42 }); |
| |
| constraintSyntaxTest('Simple double', { aspectRatio: 1.5 }); |
| constraintSyntaxTest('Ideal double', { aspectRatio: { ideal: 1.5 }}); |
| constraintSyntaxTest('Min/max double', { aspectRatio: { min: 1.5, max: 2.0 }}); |
| constraintSyntaxTestWithChange('Exact unwrapped double', |
| { aspectRatio: { exact: 1.5 } }, { aspectRatio: 1.5 }); |
| |
| constraintSyntaxTest('Simple String', { facingMode: "user1" }); |
| constraintSyntaxTest('Ideal String', { facingMode: { ideal: "user2" }}); |
| constraintSyntaxTest('Multiple String in Brackets', { facingMode: { ideal: ["user3", "left3"]}}); |
| constraintSyntaxTest('Multiple Bracketed Naked String', { facingMode: ["user4", "left4"] }); |
| constraintSyntaxTestWithChange('Single Bracketed string unwrapped', |
| { 'facingMode': ["user5"]}, { facingMode: "user5" }); |
| constraintSyntaxTest('Both Ideal and Exact string', { facingMode: { ideal: "user6", exact: "left6" }}); |
| |
| constraintSyntaxTest('Simple boolean', { echoCancellation: true }); |
| constraintSyntaxTest('Ideal boolean', { echoCancellation: { ideal: true }}); |
| constraintSyntaxTestWithChange('Exact unwrapped boolean', |
| { echoCancellation: { exact: true } }, { echoCancellation: true }); |
| |
| </script> |
| </body> |
| </html> |
