diff options
Diffstat (limited to 'vendor/github.com/abema/go-mp4/extract.go')
-rw-r--r-- | vendor/github.com/abema/go-mp4/extract.go | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/vendor/github.com/abema/go-mp4/extract.go b/vendor/github.com/abema/go-mp4/extract.go deleted file mode 100644 index 7de36b06a..000000000 --- a/vendor/github.com/abema/go-mp4/extract.go +++ /dev/null @@ -1,98 +0,0 @@ -package mp4 - -import ( - "errors" - "io" -) - -type BoxInfoWithPayload struct { - Info BoxInfo - Payload IBox -} - -func ExtractBoxWithPayload(r io.ReadSeeker, parent *BoxInfo, path BoxPath) ([]*BoxInfoWithPayload, error) { - return ExtractBoxesWithPayload(r, parent, []BoxPath{path}) -} - -func ExtractBoxesWithPayload(r io.ReadSeeker, parent *BoxInfo, paths []BoxPath) ([]*BoxInfoWithPayload, error) { - bis, err := ExtractBoxes(r, parent, paths) - if err != nil { - return nil, err - } - - bs := make([]*BoxInfoWithPayload, 0, len(bis)) - for _, bi := range bis { - if _, err := bi.SeekToPayload(r); err != nil { - return nil, err - } - - var ctx Context - if parent != nil { - ctx = parent.Context - } - box, _, err := UnmarshalAny(r, bi.Type, bi.Size-bi.HeaderSize, ctx) - if err != nil { - return nil, err - } - bs = append(bs, &BoxInfoWithPayload{ - Info: *bi, - Payload: box, - }) - } - return bs, nil -} - -func ExtractBox(r io.ReadSeeker, parent *BoxInfo, path BoxPath) ([]*BoxInfo, error) { - return ExtractBoxes(r, parent, []BoxPath{path}) -} - -func ExtractBoxes(r io.ReadSeeker, parent *BoxInfo, paths []BoxPath) ([]*BoxInfo, error) { - if len(paths) == 0 { - return nil, nil - } - - for i := range paths { - if len(paths[i]) == 0 { - return nil, errors.New("box path must not be empty") - } - } - - boxes := make([]*BoxInfo, 0, 8) - - handler := func(handle *ReadHandle) (interface{}, error) { - path := handle.Path - if parent != nil { - path = path[1:] - } - if handle.BoxInfo.Type == BoxTypeAny() { - return nil, nil - } - fm, m := matchPath(paths, path) - if m { - boxes = append(boxes, &handle.BoxInfo) - } - - if fm { - if _, err := handle.Expand(); err != nil { - return nil, err - } - } - return nil, nil - } - - if parent != nil { - _, err := ReadBoxStructureFromInternal(r, parent, handler) - return boxes, err - } - _, err := ReadBoxStructure(r, handler) - return boxes, err -} - -func matchPath(paths []BoxPath, path BoxPath) (forwardMatch bool, match bool) { - for i := range paths { - fm, m := path.compareWith(paths[i]) - forwardMatch = forwardMatch || fm - match = match || m - } - return -} |