| 1 | {"version":3,"file":"loader.mjs","names":["stringEncode","Tag","Swf","concat","asvm1TypeString","str","Uint8Array","asmv1ActionConstantPool","strs","data","map","v","DataView","buffer","byteOffset","byteLength","setUint16","length","asvm1TypeConstant8","i","asmv1ActionPush","pushed","asvm1ActionLoadMovie","setUint8","asvm1ActionEnd","bytecodeLoadMovieSwf4","url","bytecodeLoadMovieSwf5","loader","swfv","width","height","fps","color","delay","Error","swf","version","frameSize","xMax","Math","round","yMax","frameRate","value","frameCount","setBackgroundColor","code","tags","push","showFrame","doAction","end","encode"],"sources":["../src/loader.ts"],"sourcesContent":["import {stringEncode} from './swf/util';\nimport {Tag} from './swf/tag';\nimport {Swf} from './swf/swf';\nimport {concat} from './util/internal/data';\n\n/**\n * Type string.\n *\n * @param str The string.\n * @returns Bytecode data.\n */\nfunction asvm1TypeString(str: string) {\n\treturn concat([new Uint8Array(1), stringEncode(str)]);\n}\n\n/**\n * Action: ConstantPoolEnd.\n *\n * @param strs Constant strings.\n * @returns Bytecode data.\n */\nfunction asmv1ActionConstantPool(strs: string[]) {\n\tconst data = concat([new Uint8Array(5), ...strs.map(stringEncode)]);\n\tconst v = new DataView(data.buffer, data.byteOffset, data.byteLength);\n\tdata[0] = 0x88;\n\tv.setUint16(1, data.length - 3, true);\n\tv.setUint16(3, strs.length, true);\n\treturn data;\n}\n\n/**\n * Type constant 8-bit.\n *\n * @param i Constant index.\n * @returns Bytecode data.\n */\nfunction asvm1TypeConstant8(i: number) {\n\tconst data = new Uint8Array(2);\n\tdata[0] = 0x08;\n\tdata[1] = i;\n\treturn data;\n}\n\n/**\n * Action: Push.\n *\n * @param pushed Pushed data.\n * @returns Bytecode data.\n */\nfunction asmv1ActionPush(pushed: Uint8Array[]) {\n\tconst data = concat([new Uint8Array(3), ...pushed]);\n\tconst v = new DataView(data.buffer, data.byteOffset, data.byteLength);\n\tdata[0] = 0x96;\n\tv.setUint16(1, data.length - 3, true);\n\treturn data;\n}\n\n/**\n * Action: LoadMovie.\n *\n * @returns Bytecode data.\n */\nfunction asvm1ActionLoadMovie() {\n\tconst data = new Uint8Array(4);\n\tconst v = new DataView(data.buffer, data.byteOffset, data.byteLength);\n\tdata[0] = 0x9a;\n\tv.setUint16(1, data.length - 3, true);\n\tv.setUint8(3, 0x40);\n\treturn data;\n}\n\n/**\n * Action: End.\n *\n * @returns Bytecode data.\n */\nfunction asvm1ActionEnd() {\n\treturn new Uint8Array(1);\n}\n\n/**\n * Bytecode in SWF4 format.\n *\n * @param url The URL to load.\n * @returns Bytecode data.\n */\nfunction bytecodeLoadMovieSwf4(url: string) {\n\treturn concat([\n\t\tasmv1ActionPush([asvm1TypeString(url)]),\n\t\tasmv1ActionPush([asvm1TypeString('/')]),\n\t\tasvm1ActionLoadMovie(),\n\t\tasvm1ActionEnd()\n\t]);\n}\n\n/**\n * Bytecode in SWF5 format.\n *\n * @param url The URL to load.\n * @returns Bytecode data.\n */\nfunction bytecodeLoadMovieSwf5(url: string) {\n\treturn concat([\n\t\tasmv1ActionConstantPool([url, '_level0']),\n\t\tasmv1ActionPush([asvm1TypeConstant8(0), asvm1TypeConstant8(1)]),\n\t\tasvm1ActionLoadMovie(),\n\t\tasvm1ActionEnd()\n\t]);\n}\n\n/**\n * Generate a loader stub SWF movie.\n * Optionally include a delay to give player a change to initialize first.\n *\n * @param swfv SWF format version number.\n * @param width Frame width.\n * @param height Frame height.\n * @param fps Frames-per-second.\n * @param color Background color.\n * @param url The URL to load.\n * @param delay Number of frame to delay loading.\n * @returns Movie data.\n */\nexport function loader(\n\tswfv: number,\n\twidth: number,\n\theight: number,\n\tfps: number,\n\tcolor: number,\n\turl: string,\n\tdelay = 0\n) {\n\tif (swfv < 4) {\n\t\tthrow new Error('SWF format version must be 4+');\n\t}\n\tdelay = delay < 0 ? 0 : delay;\n\n\tconst swf = new Swf();\n\tswf.version = swfv;\n\tswf.frameSize.xMax = Math.round(width * 20);\n\tswf.frameSize.yMax = Math.round(height * 20);\n\tswf.frameRate.value = fps;\n\tswf.frameCount = delay + 1;\n\n\tconst setBackgroundColor = new Tag();\n\tsetBackgroundColor.code = 9;\n\tsetBackgroundColor.data = new Uint8Array(3);\n\t// eslint-disable-next-line no-bitwise\n\tsetBackgroundColor.data[2] = color & 0xff;\n\t// eslint-disable-next-line no-bitwise\n\tsetBackgroundColor.data[1] = (color >> 8) & 0xff;\n\t// eslint-disable-next-line no-bitwise\n\tsetBackgroundColor.data[0] = (color >> 16) & 0xff;\n\tswf.tags.push(setBackgroundColor);\n\n\tconst showFrame = new Tag();\n\tshowFrame.code = 1;\n\tfor (let i = 0; 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