mirror of
https://github.com/bluenviron/mediamtx
synced 2025-02-08 23:47:48 +00:00
9e6abc6e9f
* rtmp: improve MsgCommandAMF0 * rtmp: fix MsgSetPeerBandwidth * rtmp: add message tests * rtmp: replace implementation with new one * rtmp: rename handshake functions * rtmp: avoid calling useless function * rtmp: use time.Duration for PTSDelta * rtmp: fix decoding chunks with relevant size * rtmp: rewrite implementation of rtmp connection * rtmp: fix tests * rtmp: improve error message * rtmp: replace h264 config implementation * link against github.com/notedit/rtmp * normalize MessageStreamID * rtmp: make acknowledge optional * rtmp: fix decoding of chunk2 + chunk3 * avoid using encoding/binary
62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
package chunk
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import (
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"io"
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)
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// Chunk0 is a type 0 chunk.
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// This type MUST be used at
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// the start of a chunk stream, and whenever the stream timestamp goes
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// backward (e.g., because of a backward seek).
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type Chunk0 struct {
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ChunkStreamID byte
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Timestamp uint32
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Type MessageType
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MessageStreamID uint32
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BodyLen uint32
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Body []byte
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}
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// Read reads the chunk.
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func (c *Chunk0) Read(r io.Reader, chunkMaxBodyLen uint32) error {
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header := make([]byte, 12)
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_, err := io.ReadFull(r, header)
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if err != nil {
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return err
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}
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c.ChunkStreamID = header[0] & 0x3F
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c.Timestamp = uint32(header[1])<<16 | uint32(header[2])<<8 | uint32(header[3])
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c.BodyLen = uint32(header[4])<<16 | uint32(header[5])<<8 | uint32(header[6])
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c.Type = MessageType(header[7])
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c.MessageStreamID = uint32(header[8])<<24 | uint32(header[9])<<16 | uint32(header[10])<<8 | uint32(header[11])
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chunkBodyLen := c.BodyLen
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if chunkBodyLen > chunkMaxBodyLen {
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chunkBodyLen = chunkMaxBodyLen
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}
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c.Body = make([]byte, chunkBodyLen)
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_, err = io.ReadFull(r, c.Body)
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return err
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}
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// Marshal writes the chunk.
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func (c Chunk0) Marshal() ([]byte, error) {
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buf := make([]byte, 12+len(c.Body))
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buf[0] = c.ChunkStreamID
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buf[1] = byte(c.Timestamp >> 16)
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buf[2] = byte(c.Timestamp >> 8)
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buf[3] = byte(c.Timestamp)
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buf[4] = byte(c.BodyLen >> 16)
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buf[5] = byte(c.BodyLen >> 8)
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buf[6] = byte(c.BodyLen)
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buf[7] = byte(c.Type)
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buf[8] = byte(c.MessageStreamID >> 24)
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buf[9] = byte(c.MessageStreamID >> 16)
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buf[10] = byte(c.MessageStreamID >> 8)
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buf[11] = byte(c.MessageStreamID)
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copy(buf[12:], c.Body)
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return buf, nil
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}
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