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h264: cleanup code

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This commit is contained in:
aler9
2022-06-02 10:34:53 +02:00
parent 5ba5b6f951
commit d402026e0d
1 changed files with 33 additions and 17 deletions
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50
pkg/h264/sps.go
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@@ -58,10 +58,33 @@ func readFlag(br *bitio.Reader) (bool, error) {
if err != nil {
return false, err
}
return (tmp == 1), nil
}
func readUint8(br *bitio.Reader) (uint8, error) {
tmp, err := br.ReadBits(8)
if err != nil {
return 0, err
}
return uint8(tmp), nil
}
func readUint16(br *bitio.Reader) (uint16, error) {
tmp, err := br.ReadBits(16)
if err != nil {
return 0, err
}
return uint16(tmp), nil
}
func readUint32(br *bitio.Reader) (uint32, error) {
tmp, err := br.ReadBits(32)
if err != nil {
return 0, err
}
return uint32(tmp), nil
}
func readScalingList(br *bitio.Reader, size int) ([]int32, bool, error) {
lastScale := int32(8)
nextScale := int32(8)
@@ -179,17 +202,16 @@ type SPS_TimingInfo struct { //nolint:revive
}
func (t *SPS_TimingInfo) unmarshal(br *bitio.Reader) error {
tmp, err := br.ReadBits(32)
var err error
t.NumUnitsInTick, err = readUint32(br)
if err != nil {
return err
}
t.NumUnitsInTick = uint32(tmp)
tmp, err = br.ReadBits(32)
t.TimeScale, err = readUint32(br)
if err != nil {
return err
}
t.TimeScale = uint32(tmp)
t.FixedFrameRateFlag, err = readFlag(br)
if err != nil {
@@ -256,24 +278,21 @@ func (v *SPS_VUI) unmarshal(br *bitio.Reader) error {
}
if v.AspectRatioInfoPresentFlag {
tmp, err := br.ReadBits(8)
v.AspectRatioIdc, err = readUint8(br)
if err != nil {
return err
}
v.AspectRatioIdc = uint8(tmp)
if v.AspectRatioIdc == 255 { // Extended_SAR
tmp, err := br.ReadBits(16)
v.SarWidth, err = readUint16(br)
if err != nil {
return err
}
v.SarWidth = uint16(tmp)
tmp, err = br.ReadBits(16)
v.SarHeight, err = readUint16(br)
if err != nil {
return err
}
v.SarHeight = uint16(tmp)
}
}
@@ -312,23 +331,20 @@ func (v *SPS_VUI) unmarshal(br *bitio.Reader) error {
}
if v.ColourDescriptionPresentFlag {
tmp, err := br.ReadBits(8)
v.ColourPrimaries, err = readUint8(br)
if err != nil {
return err
}
v.ColourPrimaries = uint8(tmp)
tmp, err = br.ReadBits(8)
v.TransferCharacteristics, err = readUint8(br)
if err != nil {
return err
}
v.TransferCharacteristics = uint8(tmp)
tmp, err = br.ReadBits(8)
v.MatrixCoefficients, err = readUint8(br)
if err != nil {
return err
}
v.MatrixCoefficients = uint8(tmp)
}
}