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read_test.go
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read_test.go
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package mp4
import (
"bytes"
"os"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestReadBoxStructure(t *testing.T) {
f, err := os.Open("./testdata/sample.mp4")
require.NoError(t, err)
defer f.Close()
var n int
_, err = ReadBoxStructure(f, func(h *ReadHandle) (interface{}, error) {
n++
switch n {
case 57: // unsupported
require.False(t, h.BoxInfo.IsSupportedType())
buf := bytes.NewBuffer(nil)
n, err := h.ReadData(buf)
require.NoError(t, err)
require.Equal(t, h.BoxInfo.Size-h.BoxInfo.HeaderSize, n)
assert.Len(t, buf.Bytes(), int(n))
case 41: // stbl
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, BoxTypeStbl(), h.BoxInfo.Type)
infos, err := h.Expand()
require.NoError(t, err)
assert.Equal(t, []interface{}{"stsd", "stts", nil, nil, "stco", nil, nil}, infos)
case 42: // stsd
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, BoxTypeStsd(), h.BoxInfo.Type)
box, n, err := h.ReadPayload()
require.NoError(t, err)
require.Equal(t, uint64(8), n)
assert.Equal(t, &Stsd{EntryCount: 1}, box)
_, err = h.Expand()
require.NoError(t, err)
return "stsd", nil
case 45: // stts
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, BoxTypeStts(), h.BoxInfo.Type)
_, err = h.Expand()
require.NoError(t, err)
return "stts", nil
case 48: // stco
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, BoxTypeStco(), h.BoxInfo.Type)
_, err = h.Expand()
require.NoError(t, err)
return "stco", nil
case 56: // data
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, BoxTypeData(), h.BoxInfo.Type)
box, n, err := h.ReadPayload()
require.NoError(t, err)
require.Equal(t, uint64(21), n)
assert.Equal(t, &Data{DataType: DataTypeStringUTF8, DataLang: 0, Data: []byte("Lavf58.29.100")}, box)
_, err = h.Expand()
require.NoError(t, err)
return "stco", nil
default: // otherwise
require.True(t, h.BoxInfo.IsSupportedType())
_, err = h.Expand()
require.NoError(t, err)
}
return nil, nil
})
require.NoError(t, err)
assert.Equal(t, 57, n)
}
// > mp4tool dump testdata/sample.mp4 | cat -n
// 1 [ftyp] Size=32 MajorBrand="isom" MinorVersion=512 CompatibleBrands=[{CompatibleBrand="isom"}, {CompatibleBrand="iso2"}, {CompatibleBrand="avc1"}, {CompatibleBrand="mp41"}]
// 2 [free] Size=8 Data=[...] (use "-full free" to show all)
// 3 [mdat] Size=6402 Data=[...] (use "-full mdat" to show all)
// 4 [moov] Size=1836
// 5 [mvhd] Size=108 ... (use "-full mvhd" to show all)
// 6 [trak] Size=743
// 7 [tkhd] Size=92 ... (use "-full tkhd" to show all)
// 8 [edts] Size=36
// 9 [elst] Size=28 Version=0 Flags=0x000000 EntryCount=1 Entries=[{SegmentDurationV0=1000 MediaTimeV0=2048 MediaRateInteger=1}]
// 10 [mdia] Size=607
// 11 [mdhd] Size=32 Version=0 Flags=0x000000 CreationTimeV0=0 ModificationTimeV0=0 Timescale=10240 DurationV0=10240 Pad=false Language="eng" PreDefined=0
// 12 [hdlr] Size=44 Version=0 Flags=0x000000 PreDefined=0 HandlerType="vide" Name="VideoHandle"
// 13 [minf] Size=523
// 14 [vmhd] Size=20 Version=0 Flags=0x000001 Graphicsmode=0 Opcolor=[0, 0, 0]
// 15 [dinf] Size=36
// 16 [dref] Size=28 Version=0 Flags=0x000000 EntryCount=1
// 17 [url ] Size=12 Version=0 Flags=0x000001
// 18 [stbl] Size=459
// 19 [stsd] Size=167 Version=0 Flags=0x000000 EntryCount=1
// 20 [avc1] Size=151 ... (use "-full avc1" to show all)
// 21 [avcC] Size=49 ConfigurationVersion=0x1 Profile=0x64 ProfileCompatibility=0x0 Level=0xc Data=[0xff, 0xe1, 0x0, 0x19, 0x67, 0x64, 0x0, 0xc, 0xac, 0xd9, 0x41, 0x41, 0x9f, 0x9f, 0x1, 0x6c, 0x80, 0x0, 0x0, 0x3, 0x0, 0x80, 0x0, 0x0, 0xa, 0x7, 0x8a, 0x14, 0xcb, 0x1, 0x0, 0x5, 0x68, 0xeb, 0xec, 0xb2, 0x2c]
// 22 [pasp] Size=16 HSpacing=1 VSpacing=1
// 23 [stts] Size=24 Version=0 Flags=0x000000 EntryCount=1 Entries=[{SampleCount=10 SampleDelta=1024}]
// 24 [stss] Size=20 Version=0 Flags=0x000000 EntryCount=1 SampleNumber=[1]
// 25 [ctts] Size=88 ... (use "-full ctts" to show all)
// 26 [stsc] Size=40 Version=0 Flags=0x000000 EntryCount=2 Entries=[{FirstChunk=1 SamplesPerChunk=2 SampleDescriptionIndex=1}, {FirstChunk=2 SamplesPerChunk=1 SampleDescriptionIndex=1}]
// 27 [stsz] Size=60 Version=0 Flags=0x000000 SampleSize=0 SampleCount=10 EntrySize=[3679, 86, 545, 180, 69, 60, 182, 22, 204, 15]
// 28 [stco] Size=52 Version=0 Flags=0x000000 EntryCount=9 ChunkOffset=[48, 3836, 4527, 4864, 5043, 5227, 5560, 5702, 6038]
// 29 [trak] Size=844
// 30 [tkhd] Size=92 ... (use "-full tkhd" to show all)
// 31 [edts] Size=36
// 32 [elst] Size=28 Version=0 Flags=0x000000 EntryCount=1 Entries=[{SegmentDurationV0=1000 MediaTimeV0=1024 MediaRateInteger=1}]
// 33 [mdia] Size=708
// 34 [mdhd] Size=32 Version=0 Flags=0x000000 CreationTimeV0=0 ModificationTimeV0=0 Timescale=44100 DurationV0=45124 Pad=false Language="eng" PreDefined=0
// 35 [hdlr] Size=44 Version=0 Flags=0x000000 PreDefined=0 HandlerType="soun" Name="SoundHandle"
// 36 [minf] Size=624
// 37 [smhd] Size=16 Version=0 Flags=0x000000 Balance=0
// 38 [dinf] Size=36
// 39 [dref] Size=28 Version=0 Flags=0x000000 EntryCount=1
// 40 [url ] Size=12 Version=0 Flags=0x000001
// 41 [stbl] Size=564
// 42 [stsd] Size=106 Version=0 Flags=0x000000 EntryCount=1
// 43 [mp4a] Size=90 DataReferenceIndex=1 EntryVersion=0 ChannelCount=2 SampleSize=16 PreDefined=0 SampleRate=2890137600
// 44 [esds] Size=54 Version=0 Flags=0x000000 Descriptors=[{Tag=ESDescr Size=37 ESID=2 StreamDependenceFlag=false UrlFlag=false OcrStreamFlag=false StreamPriority=0}, {Tag=DecoderConfigDescr Size=23 ObjectTypeIndication=0x40 StreamType=5 UpStream=false Reserved=true BufferSizeDB=0 MaxBitrate=10570 AvgBitrate=10570}, {Tag=DecSpecificInfo Size=5 Data=[0x12, 0x10, 0x56, 0xe5, 0x0]}, {Tag=SLConfigDescr Size=1 Data=[0x2]}]
// 45 [stts] Size=48 Version=0 Flags=0x000000 EntryCount=4 Entries=[{SampleCount=1 SampleDelta=1024}, {SampleCount=1 SampleDelta=1505}, {SampleCount=41 SampleDelta=1024}, {SampleCount=1 SampleDelta=611}]
// 46 [stsc] Size=100 ... (use "-full stsc" to show all)
// 47 [stsz] Size=196 ... (use "-full stsz" to show all)
// 48 [stco] Size=52 Version=0 Flags=0x000000 EntryCount=9 ChunkOffset=[3813, 4381, 4707, 4933, 5103, 5409, 5582, 5906, 6053]
// 49 [sgpd] Size=26 Version=1 Flags=0x000000 GroupingType="roll" DefaultLength=2 EntryCount=1 RollDistances=[-1] Unsupported=[]
// 50 [sbgp] Size=28 Version=0 Flags=0x000000 GroupingType=1919904876 EntryCount=1 Entries=[{SampleCount=44 GroupDescriptionIndex=1}]
// 51 [udta] Size=133
// 52 [meta] Size=90 Version=0 Flags=0x000000
// 53 [hdlr] Size=33 Version=0 Flags=0x000000 PreDefined=0 HandlerType="mdir" Name=""
// 54 [ilst] Size=45
// 55 [(c)too] Size=37
// 56 [data] Size=29 DataType=UTF8 DataLang=0 Data="Lavf58.29.100"
// 57 [loci] (unsupported box type) Size=35 Data=[...] (use "-full loci" to show all)
func TestReadBoxStructureQT(t *testing.T) {
f, err := os.Open("./testdata/sample_qt.mp4")
require.NoError(t, err)
defer f.Close()
var n int
_, err = ReadBoxStructure(f, func(h *ReadHandle) (interface{}, error) {
n++
switch n {
case 51, 44: // unsupported
require.False(t, h.BoxInfo.IsSupportedType())
buf := bytes.NewBuffer(nil)
n, err := h.ReadData(buf)
require.NoError(t, err)
require.Equal(t, h.BoxInfo.Size-h.BoxInfo.HeaderSize, n)
assert.Len(t, buf.Bytes(), int(n))
case 39: // mp4a
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, StrToBoxType("mp4a"), h.BoxInfo.Type)
box, n, err := h.ReadPayload()
require.NoError(t, err)
require.Equal(t, uint64(44), n)
assert.Equal(t, []byte{0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2}, box.(*AudioSampleEntry).QuickTimeData)
_, err = h.Expand()
require.NoError(t, err)
case 42: // mp4a
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, StrToBoxType("mp4a"), h.BoxInfo.Type)
box, n, err := h.ReadPayload()
require.NoError(t, err)
require.Equal(t, uint64(4), n)
assert.Equal(t, []byte{0x0, 0x0, 0x0, 0x0}, box.(*AudioSampleEntry).QuickTimeData)
_, err = h.Expand()
require.NoError(t, err)
case 54: // keys
require.True(t, h.BoxInfo.IsSupportedType())
require.Equal(t, StrToBoxType("keys"), h.BoxInfo.Type)
box, n, err := h.ReadPayload()
require.NoError(t, err)
require.Equal(t, uint64(35), n)
assert.Equal(t, int32(1), box.(*Keys).EntryCount)
_, err = h.Expand()
require.NoError(t, err)
case 56: // ilst number item
require.True(t, h.BoxInfo.IsSupportedType())
_, err = h.Expand()
require.Equal(t, Uint32ToBoxType(1), h.BoxInfo.Type)
require.NoError(t, err)
default: // otherwise
require.True(t, h.BoxInfo.IsSupportedType())
_, err = h.Expand()
require.NoError(t, err)
}
return nil, nil
})
require.NoError(t, err)
assert.Equal(t, 56, n)
}
// > mp4tool dump -full mp4a sample_qt.mp4 | cat -n
// 1 [ftyp] Size=20 MajorBrand="qt " MinorVersion=512 CompatibleBrands=[{CompatibleBrand="qt "}]
// 2 [free] Size=42 Data=[...] (use "-full free" to show all)
// 3 [ftyp] Size=20 MajorBrand="qt " MinorVersion=512 CompatibleBrands=[{CompatibleBrand="qt "}]
// 4 [free] Size=42 Data=[...] (use "-full free" to show all)
// 5 [moov] Size=340357
// 6 [mvhd] Size=108 ... (use "-full mvhd" to show all)
// 7 [trak] Size=115889
// 8 [tkhd] Size=92 ... (use "-full tkhd" to show all)
// 9 [mdia] Size=115789
// 10 [mdhd] Size=32 Version=0 Flags=0x000000 CreationTimeV0=2082844800 ModificationTimeV0=2082844800 Timescale=24 DurationV0=14315 Language="und" PreDefined=0
// 11 [hdlr] Size=45 Version=0 Flags=0x000000 PreDefined=1835560050 HandlerType="vide" Name="VideoHandler"
// 12 [minf] Size=115704
// 13 [vmhd] Size=20 Version=0 Flags=0x000001 Graphicsmode=0 Opcolor=[0, 0, 0]
// 14 [dinf] Size=36
// 15 [dref] Size=28 Version=0 Flags=0x000000 EntryCount=1
// 16 [url ] Size=12 Version=0 Flags=0x000001
// 17 [stbl] Size=115596
// 18 [stsd] Size=148 Version=0 Flags=0x000000 EntryCount=1
// 19 [avc1] Size=132 DataReferenceIndex=1 PreDefined=0 PreDefined2=[1179012432, 512, 512] Width=424 Height=240 Horizresolution=4718592 Vertresolution=4718592 FrameCount=1 Compressorname="libx264" Depth=24 PreDefined3=-1
// 20 [avcC] Size=46 ... (use "-full avcC" to show all)
// 21 [stts] Size=24 Version=0 Flags=0x000000 EntryCount=1 Entries=[{SampleCount=14315 SampleDelta=1}]
// 22 [stss] Size=832 ... (use "-full stss" to show all)
// 23 [stsc] Size=28 Version=0 Flags=0x000000 EntryCount=1 Entries=[{FirstChunk=1 SamplesPerChunk=1 SampleDescriptionIndex=1}]
// 24 [stsz] Size=57280 ... (use "-full stsz" to show all)
// 25 [stco] Size=57276 ... (use "-full stco" to show all)
// 26 [hdlr] Size=44 Version=0 Flags=0x000000 PreDefined=1684565106 HandlerType="url " Name="DataHandler"
// 27 [trak] Size=224196
// 28 [tkhd] Size=92 ... (use "-full tkhd" to show all)
// 29 [mdia] Size=224096
// 30 [mdhd] Size=32 Version=0 Flags=0x000000 CreationTimeV0=2082844800 ModificationTimeV0=2082844800 Timescale=48000 DurationV0=28628992 Language="und" PreDefined=0
// 31 [hdlr] Size=45 Version=0 Flags=0x000000 PreDefined=1835560050 HandlerType="soun" Name="SoundHandler"
// 32 [minf] Size=224011
// 33 [smhd] Size=16 Version=0 Flags=0x000000 Balance=0
// 34 [dinf] Size=36
// 35 [dref] Size=28 Version=0 Flags=0x000000 EntryCount=1
// 36 [url ] Size=12 Version=0 Flags=0x000001
// 37 [stbl] Size=223907
// 38 [stsd] Size=147 Version=0 Flags=0x000000 EntryCount=1
// 39 [mp4a] Size=131 DataReferenceIndex=1 EntryVersion=1 ChannelCount=2 SampleSize=16 PreDefined=65534 SampleRate=48000 QuickTimeData=[0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2]
// 40 [wave] Size=79
// 41 [frma] Size=12 DataFormat="mp4a"
// 42 [mp4a] Size=12 QuickTimeData=[0x0, 0x0, 0x0, 0x0]
// 43 [esds] Size=39 ... (use "-full esds" to show all)
// 44 [0x00000000] (unsupported box type) Size=8 Data=[...] (use "-full 0x00000000" to show all)
// 45 [stts] Size=24 Version=0 Flags=0x000000 EntryCount=1 Entries=[{SampleCount=27958 SampleDelta=1024}]
// 46 [stsc] Size=28 Version=0 Flags=0x000000 EntryCount=1 Entries=[{FirstChunk=1 SamplesPerChunk=1 SampleDescriptionIndex=1}]
// 47 [stsz] Size=111852 ... (use "-full stsz" to show all)
// 48 [stco] Size=111848 ... (use "-full stco" to show all)
// 49 [hdlr] Size=44 Version=0 Flags=0x000000 PreDefined=1684565106 HandlerType="url " Name="DataHandler"
// 50 [udta] Size=156
// 51 [(c)enc] (unsupported box type) Size=23 Data=[...] (use "-full (c)enc" to show all)
// 52 [meta] Size=125 Version=0 Flags=0x000000
// 53 [hdlr] Size=33 Version=0 Flags=0x000000 PreDefined=0 HandlerType="mdta" Name=""
// 54 [keys] Size=43 Version=0 Flags=0x000000 EntryCount=1 Entries=[{KeySize=27 KeyNamespace="mdta" KeyValue="com.android.version"}]
// 55 [ilst] Size=37
// 56 [0x00000001] Size=29 Version=0 Flags=0x000000 ItemName="data" Data={DataType=UTF8 DataLang=0 Data="1.0.0"}
// this used to cause an infinite loop.
func TestReadBoxStructureZeroSize(t *testing.T) {
b := []byte("\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01")
_, err := ReadBoxStructure(bytes.NewReader(b), func(h *ReadHandle) (interface{}, error) {
return nil, nil
})
require.Error(t, err)
}
func FuzzReadBoxStructure(f *testing.F) {
// AC-3 track from Apple HLS
f.Add([]byte{
0x00, 0x00, 0x00, 0x20, 0x66, 0x74, 0x79, 0x70,
0x6d, 0x70, 0x34, 0x32, 0x00, 0x00, 0x00, 0x01,
0x6d, 0x70, 0x34, 0x31, 0x6d, 0x70, 0x34, 0x32,
0x69, 0x73, 0x6f, 0x6d, 0x68, 0x6c, 0x73, 0x66,
0x00, 0x00, 0x02, 0x20, 0x6d, 0x6f, 0x6f, 0x76,
0x00, 0x00, 0x00, 0x6c, 0x6d, 0x76, 0x68, 0x64,
0x00, 0x00, 0x00, 0x00, 0xd5, 0x5b, 0xc6, 0x5d,
0xd5, 0x5b, 0xc6, 0x5d, 0x00, 0x00, 0x02, 0x58,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x01, 0x84,
0x74, 0x72, 0x61, 0x6b, 0x00, 0x00, 0x00, 0x5c,
0x74, 0x6b, 0x68, 0x64, 0x00, 0x00, 0x00, 0x01,
0xd5, 0x5b, 0xc6, 0x5d, 0xd5, 0x5b, 0xc6, 0x5d,
0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x20, 0x6d, 0x64, 0x69, 0x61,
0x00, 0x00, 0x00, 0x20, 0x6d, 0x64, 0x68, 0x64,
0x00, 0x00, 0x00, 0x00, 0xd5, 0x5b, 0xc6, 0x5d,
0xd5, 0x5b, 0xc6, 0x5d, 0x00, 0x00, 0xbb, 0x80,
0x00, 0x00, 0x00, 0x00, 0x55, 0xc4, 0x00, 0x00,
0x00, 0x00, 0x00, 0x31, 0x68, 0x64, 0x6c, 0x72,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x73, 0x6f, 0x75, 0x6e, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x43, 0x6f, 0x72, 0x65, 0x20, 0x4d, 0x65, 0x64,
0x69, 0x61, 0x20, 0x41, 0x75, 0x64, 0x69, 0x6f,
0x00, 0x00, 0x00, 0x00, 0xc7, 0x6d, 0x69, 0x6e,
0x66, 0x00, 0x00, 0x00, 0x10, 0x73, 0x6d, 0x68,
0x64, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x24, 0x64, 0x69, 0x6e,
0x66, 0x00, 0x00, 0x00, 0x1c, 0x64, 0x72, 0x65,
0x66, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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})
f.Fuzz(func(t *testing.T, b []byte) {
ReadBoxStructure(bytes.NewReader(b), func(h *ReadHandle) (interface{}, error) {
if h.BoxInfo.IsSupportedType() {
_, _, err := h.ReadPayload()
if err != nil {
return nil, err
}
return h.Expand()
}
return nil, nil
})
})
}