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[bugfix] add support for media with rotation contained in stream side data (#3335)
* add support for media with embedded rotation data in stream side data list * *grumble grumble* linter
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GitHub
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@ -224,8 +224,11 @@ func ffprobe(ctx context.Context, filepath string) (*result, error) {
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// Show specifically stream codec names, types, frame rate, duration, dimens, and pixel format.
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"stream=codec_name,codec_type,r_frame_rate,duration_ts,width,height,pix_fmt" + ":" +
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// Show orientation.
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"tags=orientation",
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// Show orientation tag.
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"tags=orientation" + ":" +
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// Show rotation data.
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"side_data=rotation",
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// Limit to reading the first
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// 1s of data looking for "rotation"
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@ -490,7 +493,7 @@ func (res *ffprobeResult) Process() (*result, error) {
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}
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// Check extra packet / frame information
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// for provided orientation (not always set).
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// for provided orientation (if provided).
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for _, pf := range res.PacketsAndFrames {
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// Ensure frame contains tags.
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@ -498,23 +501,24 @@ func (res *ffprobeResult) Process() (*result, error) {
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continue
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}
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// Ensure orientation not
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// already been specified.
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if r.orientation != 0 {
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return nil, errors.New("multiple sets of orientation data")
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}
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// Trim any space from orientation value.
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str := strings.TrimSpace(pf.Tags.Orientation)
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// Parse as integer value.
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i, _ := strconv.Atoi(str)
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if i < 0 || i >= 9 {
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orient, _ := strconv.Atoi(str)
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if orient < 0 || orient >= 9 {
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return nil, errors.New("invalid orientation data")
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}
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// Set orientation.
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r.orientation = i
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// Ensure different value has
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// not already been specified.
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if r.orientation != 0 &&
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orient != r.orientation {
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return nil, errors.New("multiple sets of orientation / rotation data")
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}
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// Set new orientation.
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r.orientation = orient
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}
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// Preallocate streams to max possible lengths.
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@ -554,6 +558,57 @@ func (res *ffprobeResult) Process() (*result, error) {
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framerate = float32(num / den)
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}
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// Check for embedded sidedata
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// which may contain rotation data.
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for _, d := range s.SideDataList {
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// Ensure frame side
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// data IS rotation data.
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if d.Rotation == 0 {
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continue
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}
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// Drop any decimal
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// rotation value.
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rot := int(d.Rotation)
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// Round rotation to multiple of 90.
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// More granularity is not needed.
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if q := rot % 90; q > 45 {
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rot += (90 - q)
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} else {
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rot -= q
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}
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// Drop any value above 360
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// or below -360, these are
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// just repeat full turns.
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//
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// Then convert to
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// orientation value.
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var orient int
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switch rot % 360 {
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case 0:
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orient = orientationNormal
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case 90, -270:
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orient = orientationRotate90
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case 180:
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orient = orientationRotate180
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case 270, -90:
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orient = orientationRotate270
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}
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// Ensure different value has
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// not already been specified.
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if r.orientation != 0 &&
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orient != r.orientation {
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return nil, errors.New("multiple sets of orientation / rotation data")
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}
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// Set new orientation.
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r.orientation = orient
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}
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// Append video stream data to result.
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r.video = append(r.video, videoStream{
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stream: stream{codec: s.CodecName},
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@ -580,6 +635,7 @@ type ffprobeResult struct {
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type ffprobePacketOrFrame struct {
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Type string `json:"type"`
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Tags ffprobeTags `json:"tags"`
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// SideDataList []ffprobeSideData `json:"side_data_list"`
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}
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type ffprobeTags struct {
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@ -587,13 +643,18 @@ type ffprobeTags struct {
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}
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type ffprobeStream struct {
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CodecName string `json:"codec_name"`
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CodecType string `json:"codec_type"`
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PixFmt string `json:"pix_fmt"`
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RFrameRate string `json:"r_frame_rate"`
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DurationTS uint `json:"duration_ts"`
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Width int `json:"width"`
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Height int `json:"height"`
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CodecName string `json:"codec_name"`
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CodecType string `json:"codec_type"`
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PixFmt string `json:"pix_fmt"`
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RFrameRate string `json:"r_frame_rate"`
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DurationTS uint `json:"duration_ts"`
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Width int `json:"width"`
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Height int `json:"height"`
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SideDataList []ffprobeSideData `json:"side_data_list"`
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}
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type ffprobeSideData struct {
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Rotation float64 `json:"rotation"`
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}
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type ffprobeFormat struct {
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