Add .gitignore to exclude all node packages and lock files

2026-02-23 21:56:04 -05:00
parent faae96c9ed
commit dcc5c6c044
9747 changed files with 1555105 additions and 2 deletions
@@ -0,0 +1,47 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getHvc1CodecString = void 0;
+const getHvc1CodecString = (data) => {
+    const configurationVersion = data.getUint8();
+    if (configurationVersion !== 1) {
+        throw new Error(`Unsupported HVCC version ${configurationVersion}`);
+    }
+    const generalProfileSpaceTierFlagAndIdc = data.getUint8();
+    let generalProfileCompatibility = data.getUint32();
+    //  unsigned int(2) general_profile_space;
+    // 	unsigned int(1) general_tier_flag;
+    //	unsigned int(5) general_profile_idc;
+    const generalProfileSpace = generalProfileSpaceTierFlagAndIdc >> 6;
+    const generalTierFlag = (generalProfileSpaceTierFlagAndIdc & 0x20) >> 5;
+    const generalProfileIdc = generalProfileSpaceTierFlagAndIdc & 0x1f;
+    // general_constraint_indicator_flags(48)
+    const generalConstraintIndicator = data.getSlice(6);
+    const generalLevelIdc = data.getUint8();
+    let profileId = 0;
+    for (let i = 0; i < 32; i++) {
+        profileId |= generalProfileCompatibility & 1;
+        if (i === 31)
+            break;
+        profileId <<= 1;
+        generalProfileCompatibility >>= 1;
+    }
+    const profileSpaceChar = generalProfileSpace === 0
+        ? ''
+        : generalProfileSpace === 1
+            ? 'A'
+            : generalProfileSpace === 2
+                ? 'B'
+                : 'C';
+    const generalTierChar = generalTierFlag === 0 ? 'L' : 'H';
+    let hasByte = false;
+    let generalConstraintString = '';
+    for (let i = 5; i >= 0; i--) {
+        if (generalConstraintIndicator[i] || hasByte) {
+            generalConstraintString =
+                generalConstraintIndicator[i].toString(16) + generalConstraintString;
+            hasByte = true;
+        }
+    }
+    return `${profileSpaceChar}${generalProfileIdc.toString(16)}.${profileId.toString(16)}.${generalTierChar}${generalLevelIdc}${generalConstraintString ? '.' : ''}${generalConstraintString}`;
+};
+exports.getHvc1CodecString = getHvc1CodecString;