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259 Commits

Author SHA1 Message Date
Saxon 398543ac8e codec/mjpeg: tidying up 
Separated my code from code that was ported from ffmpeg (differen copyright). Also added utils.go file to house the putBuffer and bytestream types. Reduced copying and use of bytes.Buffer.
Instead expanded putBuffer functionality so that I can use this throughout process (reduce copying from buffer to buffer).
 2020-01-03 17:15:06 +10:30
Saxon 2d824707ee Fixed bugs, now working 2020-01-03 17:15:06 +10:30
Saxon f0f401ab8c codec/mjpeg/extract.go: wrote Extractor type 
Wrote extractor type that provides an Extract function to extract JPEG frames from an RTP/MJPEG stream and writes them to a destination.
 2020-01-03 17:15:05 +10:30
Saxon 0ae133d7fb codec/mjpeg/jpeg.go: added writeHeader function to write JPEG header 
This also included the addition of some lunimance and chrominance tables, a multiError type (implements error) and a putter type, that will put uint16s, bytes and "buffers" into a byte
slice.
 2020-01-03 17:15:05 +10:30
Saxon 238771459b codec/mjpeg/jpeg.go: added writeHuffman function to write JPEG huffman tables to an io.Writer. 2020-01-03 17:15:05 +10:30
Saxon db877fd934 codec/mjpeg/jpeg.go: added putMarker function to write JPEG marker codes to an io.Writer 2020-01-03 17:15:05 +10:30
Saxon c6252195af codec/mjpeg: added jpeg.go file to hold JPEG specific stuff and added some JPEG marker codes. 2020-01-03 17:15:05 +10:30
Scott e116e197ae Changed all %v's to %w's where appropriate 2019-12-04 14:12:20 +10:30
Trek H cd63d0d95a alsa: unexported ringbuffer chunksize 
Chunksize can be calculated without needing an ALSA device instance.

Added a DataSize function to pcm package for calculating size of pcm data given relevant attributes.

Removed ChunkSize from config revid config struct.

Changed NewByteLexer to accept an in rather than a pointer.
 2019-11-13 19:56:13 +10:30
Trek H 796a3b9a97 pcm: changed term clip to buffer 2019-11-13 16:54:41 +10:30
Trek H 3a7c2c5c5e pcm: removed unused sample formats 2019-11-13 14:00:52 +10:30
Trek H 678245c634 pcm: fix string format 2019-11-13 12:30:48 +10:30
Trek H 5e472ba4c9 pcm: refactored to be general not alsa only 
Addition of new structs and helper functions for passing around pcm clips/buffers and their formats so that we don't have to import and rely on yobert/alsa code.

Updated any commands and alsa package to use refactored code.
 2019-11-12 21:24:08 +10:30
Saxon 47f6dcfe51 codec/h264/extract.go: extracter->extractor everywhere 2019-10-28 08:41:49 +10:30
Saxon Milton 392ed399d9 Merged in use-gvctrl-in-revid (pull request #266) 
Use gvctrl in revid

Approved-by: Alan Noble <anoble@gmail.com>
 2019-10-25 01:27:05 +00:00
Saxon 529ca0d547 codec/h264/extract.go: simplified switch 2019-10-23 14:38:18 +10:30
Saxon 38cfad7b67 revid: fixing some more bugs 
Fixed H264 RTP extractor. Fine tuned some timing regarding geovision setup. Added some more
logging to geovision setup.
 2019-10-23 12:48:22 +10:30
Saxon f336a03d7a revid: general bug fixing 
Use http instead of https in gvctrl getLogin request. Gave RTP client a close method so that the conn can
be closed after we're done with the client. Put timeout on reading from the RTP client PacketConn so that
we don't hang on the ReadFrom call if the conn is closed. Closing the RTSP and RTP clients when
startRTSPCamera is returned.
 2019-10-22 23:04:33 +10:30
Saxon Milton 38eed6bb2d Merged in fix-mjpeg-lex (pull request #261) 
codec/mjpeg/lex.go: returning nil error from Lex if we get io.EOF on reading bytes

Approved-by: Alan Noble <anoble@gmail.com>
 2019-10-20 02:24:45 +00:00
Saxon 7181532ccb codec/mjpeg/lex.go changed error checks for io.EOF to positive checks 2019-10-20 09:08:19 +10:30
Saxon 9087f727db codec/h264/extract_test.go: fixed testing for extractor 2019-10-07 16:12:30 +10:30
Saxon fc4e88bce6 fixed bugs causing problems with GeoVision H264 RTMP to youtube streaming. 
Two fixes were involved, firstly, access unit delimeters were used to denote access units and the Write timeout on rtmpSender's ringBuffer was
increased to stop the 'unable to dump old write' errors. Also made some small changes elsewhere that should fix future issues, particular with
MTS output.
 2019-10-07 14:18:20 +10:30
Saxon 1c9146eec0 codec/mjpeg/lex.go: returning nil error from Lex if we get io.EOF on reading bytes 2019-10-03 00:32:34 +09:30
Saxon 2d5d8f3bdd codec/codecutil/helpers.go: added ADPCM support to SIDToMIMEType 2019-10-01 21:01:45 +09:30
Saxon 2acc729676 codec/codecutil/helpers.go: added helpers.go file with SIDToMIMEType function to provide MIME type given a stream ID 2019-10-01 21:01:45 +09:30
Saxon Milton f8f78947f9 Merged in picture-order-count (pull request #249) 
codec/h264/h264dec/decode.go: decoding process for picture order count

Approved-by: Alan Noble <anoble@gmail.com>
 2019-09-20 02:37:33 +00:00
Saxon Milton 1fba7556dd Merged in total-coeff-and-trailing-ones (pull request #243) 
codec/h264/h264dec: parsing process for TotalCoeff and TrailingOnes

Approved-by: Alan Noble <anoble@gmail.com>
 2019-09-20 00:38:58 +00:00
Saxon 4c7f36ee36 codec/h264/h264dec/decode.go: slightly simplified if-else statements regarding BottomField and FieldPic 2019-09-18 19:41:32 +09:30
Saxon 117a75ae55 codec/h264/h264dec: simplified logic where there are things applicable to non-IDRs, which we don't handle yet. 2019-09-16 22:07:57 +09:30
Saxon 89452d55d3 codec/h264/h264dec/cavlc.go: simplified logic in loop to count leading zeros in formCoeffTokenMap 2019-09-13 11:21:00 +09:30
Trek H 2c7e28206d Merge branch 'master' into adpcm-mts 2019-09-12 21:11:50 +09:30
Trek H 96035f6d8b adpcm and mts: comments and pid change 2019-09-12 19:16:11 +09:30
Saxon ecdaab175b codec/h264/parse.go: skip over access unit delimiters when getting nalType 2019-09-11 09:47:37 +09:30
Saxon 5939db6f1b codec/h264/h264dec/decode.go: using if else structures for topFieldOrderCnt/bottomFieldOrderCnt value derivations in decodePicOrderCntType2 2019-09-10 12:12:08 +09:30
Saxon 40fa50d4f0 codec/h264/h264dec/decode.go: using if else structure for derivation of topFieldOrderCnt and bottomFieldOrderCnt in decodePicOrderCntType1 function 2019-09-10 12:06:35 +09:30
Saxon 0df182018a codec/h264/h264dec/decode.go: using else if structure instead of switch to derive value of vid.picOrderCntMsb 2019-09-10 11:32:46 +09:30
Saxon 88857ec5b9 codec/h264/h264dec/cavlc.go: fixed error message that's returned on failure to read coeffTokenTable string 2019-09-10 11:22:25 +09:30
Saxon 445649311b codec/h264/h264dec/cavlc.go: added process to comgine level and run information 2019-09-09 17:05:22 +09:30
Saxon 05e16ec260 codec/h264/h2646dec/cavlc.go: fixed build error caused by rebase 2019-09-09 16:48:10 +09:30
Saxon d78ca2d2d2 codec/h264/h264dec/cavlctab.go: commented const string representation of table 9-5. 2019-09-09 16:41:26 +09:30
Saxon 42a1918c0d codec/h264/h264dec: using const string instead of CSV file to hold table 9-5. Also made some other minor improvements 2019-09-09 16:41:26 +09:30
Saxon 92eb3e85a5 codec/h264/h264dec: created tokenMap type to make things more readable 2019-09-09 16:41:26 +09:30
Saxon 8316a621b9 codec/h264/h264dec/cavlc.go: fix comment inside parseTotalCoeffAndTrailingOnes 2019-09-09 16:41:26 +09:30
Saxon 4aa71e901c codec/h264/h264dec: put function parameters on one line for parseTotalCoeffAndTrailingOnes 2019-09-09 16:41:26 +09:30
Saxon 61a5065556 codec/h264/h264dec: added functions to get TrailingOnes and TotalCoeff as well as testing 
The functions firstly derive the value of nC and then read the value of coeff_token from the BitReader. The table read prior and loaded into
a 'map' is then used to get the corresponding values of TrailingOnes and TotalCoef.
 2019-09-09 16:41:26 +09:30
Saxon ee9281925e codec/h264/h264dec: added functions for loading table 9-5 CSV into [nColumns]map[int]map[int][2]int with testing 2019-09-09 16:41:26 +09:30
Saxon e614633cbd codec/h264/h264dec: added CSV representation of table 9-5 from H.264 specifications 2019-09-09 16:40:42 +09:30
Saxon 245edafa68 codec/h264/h264dec: added binToInt function and test 
This function will convert binary provided as a string and return as int.
 2019-09-09 16:40:42 +09:30
Saxon Milton 614f42ec2c Merged in level-information (pull request #245) 
codec/h264/h264dec: add function for parsing level information using process in section 9.2.2 of specifications

Approved-by: Alan Noble <anoble@gmail.com>
 2019-09-09 06:56:59 +00:00
Saxon 31179205b9 codec/h264/264dec/decode.go: added decodePicOrderCnt to return topFieldOrderCnt and bottomFieldOrderCnt based on picOrderCntType 
Also added placeholder for a general 'decode' function.
 2019-09-09 16:18:39 +09:30