install go2rtc on bob

2026-04-04 19:36:14 +02:00
parent f0b56e63d1
commit ccf88187b8
537 changed files with 69213 additions and 0 deletions
@@ -0,0 +1,181 @@
+package iso
+
+import (
+	"github.com/AlexxIT/go2rtc/pkg/core"
+	"github.com/AlexxIT/go2rtc/pkg/pcm"
+)
+
+func (m *Movie) WriteVideo(codec string, width, height uint16, conf []byte) {
+	// https://developer.apple.com/library/archive/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html
+	switch codec {
+	case core.CodecH264:
+		m.StartAtom("avc1")
+	case core.CodecH265:
+		m.StartAtom("hev1")
+	default:
+		panic("unsupported iso video: " + codec)
+	}
+	m.Skip(6)
+	m.WriteUint16(1)      // data_reference_index
+	m.Skip(2)             // version
+	m.Skip(2)             // revision
+	m.Skip(4)             // vendor
+	m.Skip(4)             // temporal quality
+	m.Skip(4)             // spatial quality
+	m.WriteUint16(width)  // width
+	m.WriteUint16(height) // height
+	m.WriteFloat32(72)    // horizontal resolution
+	m.WriteFloat32(72)    // vertical resolution
+	m.Skip(4)             // reserved
+	m.WriteUint16(1)      // frame count
+	m.Skip(32)            // compressor name
+	m.WriteUint16(24)     // depth
+	m.WriteUint16(0xFFFF) // color table id (-1)
+
+	switch codec {
+	case core.CodecH264:
+		m.StartAtom("avcC")
+	case core.CodecH265:
+		m.StartAtom("hvcC")
+	}
+	m.Write(conf)
+	m.EndAtom() // AVCC
+
+	m.StartAtom("pasp") // Pixel Aspect Ratio
+	m.WriteUint32(1)    // hSpacing
+	m.WriteUint32(1)    // vSpacing
+	m.EndAtom()
+
+	m.EndAtom() // AVC1
+}
+
+func (m *Movie) WriteAudio(codec string, channels uint16, sampleRate uint32, conf []byte) {
+	switch codec {
+	case core.CodecAAC, core.CodecMP3:
+		m.StartAtom("mp4a") // supported in all players and browsers
+	case core.CodecFLAC:
+		m.StartAtom("fLaC") // supported in all players and browsers
+	case core.CodecOpus:
+		m.StartAtom("Opus") // supported in Chrome and Firefox
+	case core.CodecPCMU:
+		m.StartAtom("ulaw")
+	case core.CodecPCMA:
+		m.StartAtom("alaw")
+	default:
+		panic("unsupported iso audio: " + codec)
+	}
+
+	if channels == 0 {
+		channels = 1
+	}
+
+	m.Skip(6)
+	m.WriteUint16(1)                    // data_reference_index
+	m.Skip(2)                           // version
+	m.Skip(2)                           // revision
+	m.Skip(4)                           // vendor
+	m.WriteUint16(channels)             // channel_count
+	m.WriteUint16(16)                   // sample_size
+	m.Skip(2)                           // compression id
+	m.Skip(2)                           // reserved
+	m.WriteFloat32(float64(sampleRate)) // sample_rate
+
+	switch codec {
+	case core.CodecAAC:
+		m.WriteEsdsAAC(conf)
+	case core.CodecMP3:
+		m.WriteEsdsMP3()
+	case core.CodecFLAC:
+		m.StartAtom("dfLa")
+		m.Write(pcm.FLACHeader(false, sampleRate))
+		m.EndAtom()
+	case core.CodecOpus:
+		m.WriteOpus(channels, sampleRate)
+	case core.CodecPCMU, core.CodecPCMA:
+		// don't know what means this magic
+		m.StartAtom("chan")
+		m.WriteBytes(0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0)
+		m.EndAtom()
+	}
+
+	m.EndAtom() // MP4A/OPUS
+}
+
+func (m *Movie) WriteEsdsAAC(conf []byte) {
+	m.StartAtom("esds")
+	m.Skip(1) // version
+	m.Skip(3) // flags
+
+	// MP4ESDescrTag[3]:
+	// - MP4DecConfigDescrTag[4]:
+	//   - MP4DecSpecificDescrTag[5]: conf
+	// - Other[6]
+	const header = 5
+	const size3 = 3
+	const size4 = 13
+	size5 := byte(len(conf))
+	const size6 = 1
+
+	m.WriteBytes(3, 0x80, 0x80, 0x80, size3+header+size4+header+size5+header+size6)
+	m.Skip(2) // es id
+	m.Skip(1) // es flags
+
+	// https://learn.microsoft.com/en-us/windows/win32/medfound/mpeg-4-file-sink#aac-audio
+	m.WriteBytes(4, 0x80, 0x80, 0x80, size4+header+size5)
+	m.WriteBytes(0x40) // object id
+	m.WriteBytes(0x15) // stream type
+	m.Skip(3)          // buffer size db
+	m.Skip(4)          // max bitraga
+	m.Skip(4)          // avg bitraga
+
+	m.WriteBytes(5, 0x80, 0x80, 0x80, size5)
+	m.Write(conf)
+
+	m.WriteBytes(6, 0x80, 0x80, 0x80, 1)
+	m.WriteBytes(2) // ?
+
+	m.EndAtom() // ESDS
+}
+
+func (m *Movie) WriteEsdsMP3() {
+	m.StartAtom("esds")
+	m.Skip(1) // version
+	m.Skip(3) // flags
+
+	// MP4ESDescrTag[3]:
+	// - MP4DecConfigDescrTag[4]:
+	// - Other[6]
+	const header = 5
+	const size3 = 3
+	const size4 = 13
+	const size6 = 1
+
+	m.WriteBytes(3, 0x80, 0x80, 0x80, size3+header+size4+header+size6)
+	m.Skip(2) // es id
+	m.Skip(1) // es flags
+
+	// https://learn.microsoft.com/en-us/windows/win32/medfound/mpeg-4-file-sink#mp3-audio
+	m.WriteBytes(4, 0x80, 0x80, 0x80, size4)
+	m.WriteBytes(0x6B) // object id
+	m.WriteBytes(0x15) // stream type
+	m.Skip(3)          // buffer size db
+	m.Skip(4)          // max bitraga
+	m.Skip(4)          // avg bitraga
+
+	m.WriteBytes(6, 0x80, 0x80, 0x80, 1)
+	m.WriteBytes(2) // ?
+
+	m.EndAtom() // ESDS
+}
+
+func (m *Movie) WriteOpus(channels uint16, sampleRate uint32) {
+	// https://www.opus-codec.org/docs/opus_in_isobmff.html
+	m.StartAtom("dOps")
+	m.Skip(1) // version
+	m.WriteBytes(byte(channels))
+	m.WriteUint16(0) // PreSkip ???
+	m.WriteUint32(sampleRate)
+	m.Skip(2) // OutputGain
+	m.Skip(1) // signed int(16) OutputGain;
+	m.EndAtom()
+}