Abstract:
An electronic device with one or more processors, memory and a display obtains information that enables distribution of content to a plurality of clients having different file format processing capabilities. The device provides, to a first client, first information that enables access to respective content in a first file format and provides, to a second client, second information that enables access to the respective content in a second file format different from the first file format. The first information identifies a first set of file portions that can be combined to generate the respective content in the first file format. The second information identifies a second set of file portions that can be combined to generate the respective content in the second file format. The second set of file portions includes one or more shared file portions that are included in the first set of file portions.
Abstract:
Technology for generating, reading, and using machine-readable codes is disclosed. There is a method, performed by an image capture device, for reading and using the codes. The method includes obtaining an image, identifying an area in the image having a machine-readable code. The method also includes, within the image area, finding a predefined start marker defining a start point and a predefined stop marker defining a stop point, an axis being defined there between. A plurality of axis points can be defined along the axis. For each axis point, a first distance within the image area to a mark is determined. The distance can be measured from the axis point in a first direction which is orthogonal to the axis. The first distances can be converted to a binary code using Gray code such that each first distance encodes at least one bit of data in the code.
Abstract:
Technology for generating, reading, and using machine-readable codes is disclosed. There is a method, performed by an image capture device, for reading and using the codes. The method includes obtaining an image, identifying an area in the image having a machine-readable code. The method also includes, within the image area, finding a predefined start marker defining a start point and a predefined stop marker defining a stop point, an axis being defined there between. A plurality of axis points can be defined along the axis. For each axis point, a first distance within the image area to a mark is determined. The distance can be measured from the axis point in a first direction which is orthogonal to the axis. The first distances can be converted to a binary code using Gray code such that each first distance encodes at least one bit of data in the code.
Abstract:
An electronic device obtains a file header for a file that corresponds to a plurality of clusters. The file header includes a cluster index that enables coarse searching within the file. At least one of the file header and the file omits information that is known to or calculable by the device for extracting content from the file. In response to receiving a request to seek to a position within the file, the device identifies a cluster that includes content that corresponds to the position based on the cluster index and obtains a cluster header that enables fine searching within the cluster. After obtaining the cluster header, the device identifies, within the cluster, the content that corresponds to the position based on the content index and provides at least a portion of content corresponding to the file to a presentation device, starting with the content that corresponds to the position.
Abstract:
An electronic device with one or more processors, memory and a display obtains a file header for a file corresponding to a plurality of clusters, where the file header includes a cluster index. The device receives a request to seek to a respective position within the file and, in response to receiving the request: identifies a cluster of the plurality of clusters that includes content that corresponds to the respective position based on the cluster index; obtains a cluster header associated with the cluster based on information retrieved from the cluster index, where the cluster header includes a content index; and after obtaining the cluster header, identifies respective content within the cluster corresponding to the respective position based on the content index. The device provides at least a portion of content corresponding to the file to a presentation device for presentation to a user, starting with the respective content.
Abstract:
A computer system generates a first decompressed media stream based on a first compressed media stream. While providing the first decompressed media stream to a presentation device, the computer system receives a content-transition indication for providing a second decompressed media stream to the presentation device instead of the first decompressed media stream. The content-transition indication corresponds to a request to display the second decompressed media stream starting at a respective point within a predefined portion of the second decompressed media stream. The computer system receives a second compressed media stream corresponding to the second decompressed media stream. In response to receiving the content-transition indication, the computer system generates the predefined portion of the second decompressed media stream and provides a subset of the predefined portion, that does not include content prior to the respective point, to the presentation device instead of the first decompressed media stream.
Abstract:
An electronic device with one or more processors, memory and a display obtains a file header for a file corresponding to a plurality of clusters, where the file header includes a cluster index. The device receives a request to seek to a respective position within the file and, in response to receiving the request: identifies a cluster of the plurality of clusters that includes content that corresponds to the respective position based on the cluster index; obtains a cluster header associated with the cluster based on information retrieved from the cluster index, where the cluster header includes a content index; and after obtaining the cluster header, identifies respective content within the cluster corresponding to the respective position based on the content index. The device provides at least a portion of content corresponding to the file to a presentation device for presentation to a user, starting with the respective content.
Abstract:
A computer system generates a first decompressed media stream based on a first compressed media stream. While providing the first decompressed media stream to a presentation device, the computer system receives a content-transition indication for providing a second decompressed media stream to the presentation device instead of the first decompressed media stream. The content-transition indication corresponds to a request to display the second decompressed media stream starting at a respective point within a predefined portion of the second decompressed media stream. The computer system receives a second compressed media stream corresponding to the second decompressed media stream. In response to receiving the content-transition indication, the computer system generates the predefined portion of the second decompressed media stream and provides a subset of the predefined portion, that does not include content prior to the respective point, to the presentation device instead of the first decompressed media stream.
Abstract:
A computer system receives a first compressed media stream and stores corresponding data in a first compressed buffer. The computer system generates a first decompressed media stream based on the first compressed media stream. While providing the first decompressed media stream to a presentation device, the computer system receives a content-transition indication indicating that a second decompressed media stream is to be provided to the presentation device instead of the first decompressed media stream. While continuing to generate the first decompressed media stream using the first compressed buffer, the computer system receives a second compressed media stream corresponding to the second decompressed media stream and stores corresponding data in a second compressed buffer. After storing the data in the second compressed buffer, the computer system provides a second decompressed media stream, based on the second compressed media stream, to the presentation device instead the first decompressed media stream.