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Using mmal significantly boosts video fps by offloading the encoding work from CPU to GPU. On a Raspberry Pi 3, libx264 only gives 480p18, whereas mmal can give 720p30.
32 lines
761 B
Go
32 lines
761 B
Go
package mmal
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import (
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"github.com/pion/mediadevices/pkg/codec"
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"github.com/pion/mediadevices/pkg/io/video"
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"github.com/pion/mediadevices/pkg/prop"
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)
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// Params stores libmmal specific encoding parameters.
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type Params struct {
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codec.BaseParams
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}
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// NewParams returns default mmal codec specific parameters.
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func NewParams() (Params, error) {
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return Params{
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BaseParams: codec.BaseParams{
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KeyFrameInterval: 60,
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},
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}, nil
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}
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// RTPCodec represents the codec metadata
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func (p *Params) RTPCodec() *codec.RTPCodec {
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return codec.NewRTPH264Codec(90000)
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}
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// BuildVideoEncoder builds mmal encoder with given params
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func (p *Params) BuildVideoEncoder(r video.Reader, property prop.Media) (codec.ReadCloser, error) {
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return newEncoder(r, property, *p)
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}
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