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remotion/node_modules/@remotion/media-parser/dist/state/samples-observed/slow-duration-fps.d.ts

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+import type { MediaParserAudioSample, MediaParserVideoSample } from '../../webcodec-sample-types';
+export declare const samplesObservedState: () => {
+    addVideoSample: (videoSample: MediaParserVideoSample) => void;
+    addAudioSample: (audioSample: MediaParserAudioSample) => void;
+    getSlowDurationInSeconds: () => number;
+    getFps: () => number;
+    getSlowNumberOfFrames: () => number;
+    getAudioBitrate: () => number | null;
+    getVideoBitrate: () => number | null;
+    getLastSampleObserved: () => boolean;
+    setLastSampleObserved: () => void;
+    getAmountOfSamplesObserved: () => number;
+};
+export type SamplesObservedState = ReturnType<typeof samplesObservedState>;

remotion/node_modules/@remotion/media-parser/dist/state/samples-observed/slow-duration-fps.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.samplesObservedState = void 0;
+const webcodecs_timescale_1 = require("../../webcodecs-timescale");
+const samplesObservedState = () => {
+    let smallestVideoSample;
+    let largestVideoSample;
+    let smallestAudioSample;
+    let largestAudioSample;
+    let lastSampleObserved = false;
+    const videoSamples = new Map();
+    const audioSamples = new Map();
+    const getSlowVideoDurationInSeconds = () => {
+        return (largestVideoSample !== null && largestVideoSample !== void 0 ? largestVideoSample : 0) - (smallestVideoSample !== null && smallestVideoSample !== void 0 ? smallestVideoSample : 0);
+    };
+    const getSlowAudioDurationInSeconds = () => {
+        return (largestAudioSample !== null && largestAudioSample !== void 0 ? largestAudioSample : 0) - (smallestAudioSample !== null && smallestAudioSample !== void 0 ? smallestAudioSample : 0);
+    };
+    const getSlowDurationInSeconds = () => {
+        const smallestSample = Math.min(smallestAudioSample !== null && smallestAudioSample !== void 0 ? smallestAudioSample : Infinity, smallestVideoSample !== null && smallestVideoSample !== void 0 ? smallestVideoSample : Infinity);
+        const largestSample = Math.max(largestAudioSample !== null && largestAudioSample !== void 0 ? largestAudioSample : 0, largestVideoSample !== null && largestVideoSample !== void 0 ? largestVideoSample : 0);
+        if (smallestSample === Infinity || largestSample === Infinity) {
+            return 0;
+        }
+        return largestSample - smallestSample;
+    };
+    const addVideoSample = (videoSample) => {
+        var _a;
+        videoSamples.set(videoSample.timestamp, videoSample.data.byteLength);
+        const presentationTimeInSeconds = videoSample.timestamp / webcodecs_timescale_1.WEBCODECS_TIMESCALE;
+        const duration = ((_a = videoSample.duration) !== null && _a !== void 0 ? _a : 0) / webcodecs_timescale_1.WEBCODECS_TIMESCALE;
+        if (largestVideoSample === undefined ||
+            presentationTimeInSeconds > largestVideoSample) {
+            largestVideoSample = presentationTimeInSeconds + duration;
+        }
+        if (smallestVideoSample === undefined ||
+            presentationTimeInSeconds < smallestVideoSample) {
+            smallestVideoSample = presentationTimeInSeconds;
+        }
+    };
+    const addAudioSample = (audioSample) => {
+        var _a;
+        audioSamples.set(audioSample.timestamp, audioSample.data.byteLength);
+        const presentationTimeInSeconds = audioSample.timestamp / webcodecs_timescale_1.WEBCODECS_TIMESCALE;
+        const duration = ((_a = audioSample.duration) !== null && _a !== void 0 ? _a : 0) / webcodecs_timescale_1.WEBCODECS_TIMESCALE;
+        if (largestAudioSample === undefined ||
+            presentationTimeInSeconds > largestAudioSample) {
+            largestAudioSample = presentationTimeInSeconds + duration;
+        }
+        if (smallestAudioSample === undefined ||
+            presentationTimeInSeconds < smallestAudioSample) {
+            smallestAudioSample = presentationTimeInSeconds;
+        }
+    };
+    const getFps = () => {
+        const videoDuration = (largestVideoSample !== null && largestVideoSample !== void 0 ? largestVideoSample : 0) - (smallestVideoSample !== null && smallestVideoSample !== void 0 ? smallestVideoSample : 0);
+        if (videoDuration === 0) {
+            return 0;
+        }
+        return (videoSamples.size - 1) / videoDuration;
+    };
+    const getSlowNumberOfFrames = () => videoSamples.size;
+    const getAudioBitrate = () => {
+        const audioDuration = getSlowAudioDurationInSeconds();
+        if (audioDuration === 0 || audioSamples.size === 0) {
+            return null;
+        }
+        const audioSizesInBytes = Array.from(audioSamples.values()).reduce((acc, size) => acc + size, 0);
+        return (audioSizesInBytes * 8) / audioDuration;
+    };
+    const getVideoBitrate = () => {
+        const videoDuration = getSlowVideoDurationInSeconds();
+        if (videoDuration === 0 || videoSamples.size === 0) {
+            return null;
+        }
+        const videoSizesInBytes = Array.from(videoSamples.values()).reduce((acc, size) => acc + size, 0);
+        return (videoSizesInBytes * 8) / videoDuration;
+    };
+    const getLastSampleObserved = () => lastSampleObserved;
+    const setLastSampleObserved = () => {
+        lastSampleObserved = true;
+    };
+    return {
+        addVideoSample,
+        addAudioSample,
+        getSlowDurationInSeconds,
+        getFps,
+        getSlowNumberOfFrames,
+        getAudioBitrate,
+        getVideoBitrate,
+        getLastSampleObserved,
+        setLastSampleObserved,
+        getAmountOfSamplesObserved: () => videoSamples.size + audioSamples.size,
+    };
+};
+exports.samplesObservedState = samplesObservedState;