@vikasietum_tecknology/record-rtc/dev/RecordRTC.IndexedDB.js

record-rtc is a library based on recordrtc library. In this forked version of the original library we have optimized the memory management. The video recording is stored in IndexDB in chunks.

/**
 * This method can be used to get all recorded blobs from IndexedDB storage.
 * @param {string} type - 'all' or 'audio' or 'video' or 'gif'
 * @param {function} callback - Callback function to get all stored blobs.
 * @method
 * @memberof RecordRTC
 * @example
 * RecordRTC.getFromDisk('all', function(dataURL, type){
 *     if(type === 'audio') { }
 *     if(type === 'video') { }
 *     if(type === 'gif')   { }
 * });
 */
RecordRTC.getFromDisk = function(type, callback) {
    if (!callback) {
        throw "callback is mandatory.";
    }

    console.log(
        "Getting recorded " +
        (type === "all" ? "blobs" : type + " blob ") +
        " from disk!"
    );
    DiskStorage.Fetch(function(dataURL, _type) {
        if (type !== "all" && _type === type + "Blob" && callback) {
            callback(dataURL);
        }

        if (type === "all" && callback) {
            callback(dataURL, _type.replace("Blob", ""));
        }
    });
};

/**
 * This method can be used to store recorded blobs into IndexedDB storage.
 * @param {object} options - {audio: Blob, video: Blob, gif: Blob}
 * @method
 * @memberof RecordRTC
 * @example
 * RecordRTC.writeToDisk({
 *     audio: audioBlob,
 *     video: videoBlob,
 *     gif  : gifBlob
 * });
 */
RecordRTC.writeToDisk = function(options) {
    console.log("Writing recorded blob(s) to disk!");
    options = options || {};
    if (options.audio && options.video && options.gif) {
        options.audio.getDataURL(function(audioDataURL) {
            options.video.getDataURL(function(videoDataURL) {
                options.gif.getDataURL(function(gifDataURL) {
                    DiskStorage.Store({
                        audioBlob: audioDataURL,
                        videoBlob: videoDataURL,
                        gifBlob: gifDataURL,
                    });
                });
            });
        });
    } else if (options.audio && options.video) {
        options.audio.getDataURL(function(audioDataURL) {
            options.video.getDataURL(function(videoDataURL) {
                DiskStorage.Store({
                    audioBlob: audioDataURL,
                    videoBlob: videoDataURL,
                });
            });
        });
    } else if (options.audio && options.gif) {
        options.audio.getDataURL(function(audioDataURL) {
            options.gif.getDataURL(function(gifDataURL) {
                DiskStorage.Store({
                    audioBlob: audioDataURL,
                    gifBlob: gifDataURL,
                });
            });
        });
    } else if (options.video && options.gif) {
        options.video.getDataURL(function(videoDataURL) {
            options.gif.getDataURL(function(gifDataURL) {
                DiskStorage.Store({
                    videoBlob: videoDataURL,
                    gifBlob: gifDataURL,
                });
            });
        });
    } else if (options.audio) {
        options.audio.getDataURL(function(audioDataURL) {
            DiskStorage.Store({
                audioBlob: audioDataURL,
            });
        });
    } else if (options.video) {
        options.video.getDataURL(function(videoDataURL) {
            DiskStorage.Store({
                videoBlob: videoDataURL,
            });
        });
    } else if (options.gif) {
        options.gif.getDataURL(function(gifDataURL) {
            DiskStorage.Store({
                gifBlob: gifDataURL,
            });
        });
    }
};