codec_test.go

package astiav

import (
	"testing"

	"github.com/stretchr/testify/require"
)

func TestCodec(t *testing.T) {
	c := FindDecoder(CodecIDMp3)
	require.NotNil(t, c)
	require.Equal(t, c.ID(), CodecIDMp3)
	require.Nil(t, c.ChannelLayouts())
	require.True(t, c.IsDecoder())
	require.False(t, c.IsEncoder())
	require.Nil(t, c.PixelFormats())
	require.Equal(t, []SampleFormat{SampleFormatFltp, SampleFormatFlt}, c.SampleFormats())
	require.Equal(t, "mp3float", c.Name())
	require.Equal(t, "mp3float", c.String())

	c = FindDecoderByName("aac")
	require.NotNil(t, c)
	els := []ChannelLayout{
		ChannelLayoutMono,
		ChannelLayoutStereo,
		ChannelLayoutSurround,
		ChannelLayout4Point0,
		ChannelLayout5Point0Back,
		ChannelLayout5Point1Back,
		ChannelLayout7Point1WideBack,
		ChannelLayout6Point1Back,
		ChannelLayout7Point1,
		ChannelLayout22Point2,
		ChannelLayout5Point1Point2Back,
	}
	gls := c.ChannelLayouts()
	require.Len(t, gls, len(els))
	for idx := range els {
		require.True(t, els[idx].Equal(gls[idx]))
	}
	require.True(t, c.IsDecoder())
	require.False(t, c.IsEncoder())
	require.Equal(t, []SampleFormat{SampleFormatFltp}, c.SampleFormats())
	require.Equal(t, "aac", c.Name())
	require.Equal(t, "aac", c.String())

	c = FindEncoder(CodecIDMjpeg)
	require.NotNil(t, c)
	require.False(t, c.IsDecoder())
	require.True(t, c.IsEncoder())
	require.Contains(t, c.PixelFormats(), PixelFormatYuvj420P)
	require.Nil(t, c.SampleFormats())
	require.Contains(t, c.Name(), "mjpeg")
	require.Contains(t, c.String(), "mjpeg")

	c = FindEncoderByName("mjpeg")
	require.NotNil(t, c)
	require.False(t, c.IsDecoder())
	require.True(t, c.IsEncoder())
	require.Equal(t, []PixelFormat{
		PixelFormatYuvj420P,
		PixelFormatYuvj422P,
		PixelFormatYuvj444P,
		PixelFormatYuv420P,
		PixelFormatYuv422P,
		PixelFormatYuv444P,
	}, c.PixelFormats())
	require.Equal(t, "mjpeg", c.Name())
	require.Equal(t, "mjpeg", c.String())

	c = FindDecoderByName("invalid")
	require.Nil(t, c)

	var found bool
	for _, c := range Codecs() {
		if c.ID() == CodecIDMjpeg {
			found = true
		}
	}
	require.True(t, found)
}