simaaidecoder
This section talks about the GStreamer plugin named simaaidecoder.
Description
simaaidecoder is used for decoding the incoming stream using Allegro Decoder.
Supports the H.264 compression standards HEVC (High Efficiency Video Coding) with support for baseline/main/high profiles, 4:2:0 pixels and 8-bit precision. The
encoder supports rates up to 4KP30, while the decoder supports up to 4KP60.
The standalone configuration of plugin through its individual parameters.
The configuration manager method, which only needs the
config``and ``node-nameproperties.
The SiMa.ai decoder plugin supports the following:
Config JSON Parameters
Config JSON is not needed for this plugin.
Example Usage
1simaaidecoder name=simaaidecoder1 op-buff-name=simaaidecoder1 dec-width=1280 dec-height=720 dec-fmt=YUV420P dec-fps=30 next-element=CVU op-buff-cached=true
gst-inspect-1.0 Output
1Factory Details:
2Rank primary (256)
3Long-name SiMa.AI Decoder Plugin
4Klass Decoder
5Description Video Decoder
6Author Pawan Kumar <pawankumar.ts@sima.ai>
7
8Plugin Details:
9Name simaaidecoder
10Description GStreamer SiMa.ai Decoder Plugin
11Filename /usr/lib/gstreamer-1.0/libgstsimaaidecoder.so
12Version 1.18.16
13License LGPL
14Source module simaai-soc-pipeline-decoder
15Binary package GStreamer SiMa.ai Decoder Plug-in
16Origin URL https://bitbucket.org/sima-ai/simaai-soc-pipeline
17
18GObject
19+----GInitiallyUnowned
20 +----GstObject
21 +----GstElement
22 +----GstSimaAiDecoder
23
24Pad Templates:
25SINK template: 'sink'
26 Availability: Always
27 Capabilities:
28 video/x-h264
29 parsed: true
30 stream-format: byte-stream
31 alignment: au
32 video/x-h264
33 parsed: false
34 video/x-h265
35 parsed: true
36 stream-format: byte-stream
37 alignment: au
38 video/x-h265
39 parsed: false
40
41SRC template: 'src'
42 Availability: Always
43 Capabilities:
44 video/x-raw
45 format: { (string)I420, (string)NV12 }
46
47Element has no clocking capabilities.
48Element has no URI handling capabilities.
49
50Pads:
51SRC: 'src'
52 Pad Template: 'src'
53SINK: 'sink'
54 Pad Template: 'sink'
55
56Element Properties:
57apu-mem-pool : Choose one of o/p pool in APU "malloc" or "CMA(reserved)"
58 flags: readable, writable
59 String. Default: "malloc"
60config : Config JSON for CM (if given no other config params needed)
61 flags: readable, writable
62 String. Default: ""
63dec-fmt : o/p fmt either "NV12","YUV420P"
64 flags: readable, writable
65 String. Default: "NV12"
66dec-fps : Works only for dec-type:split-input mode
67 flags: readable, writable
68 Integer. Range: 0 - 2147483647 Default: -1
69dec-height : Video file resolution height
70 flags: readable, writable
71 Integer. Range: 0 - 1080 Default: -1
72dec-ip-cnt : Decoder i/p count(Default:unalign-input 2,split-input 5)
73 flags: readable, writable
74 Integer. Range: 2 - 6 Default: 2
75dec-mode : Either "split-input" or "unalign-input"
76 flags: readable, writable
77 String. Default: "split-input"
78dec-type : Either h264 or h265
79 flags: readable, writable
80 String. Default: "h264"
81dec-width : Video file resolution width
82 flags: readable, writable
83 Integer. Range: 0 - 1920 Default: -1
84dump-cnt : No. of decode frames to be dumped
85 flags: readable, writable
86 Integer. Range: 0 - 2147483647 Default: -1
87dump-path : Path for decode frames to be dumped
88 flags: readable, writable
89 String. Default: "/tmp"
90ip-queue-max-buffers: High water mark for input queue ,if > then it blocks
91 flags: readable, writable
92 Integer. Range: 0 - 2147483647 Default: 60
93ip-queue-min-buffers: Low water mark for input queue
94 flags: readable, writable
95 Integer. Range: 0 - 2147483647 Default: 30
96name : The name of the object
97 flags: readable, writable, 0x2000
98 String. Default: "simaaidecoder0"
99next-element : Choose one of o/p pool "CVU","FPGA","ISP" "APU"(as of now only CVU & APU supported)
100 flags: readable, writable
101 String. Default: "CVU"
102node-name : As in json for matching it for CM
103 flags: readable, writable
104 String. Default: ""
105op-buff-cached : Specify if op-buff from decoder is cached (applicable for CVU & CMA heap)
106 flags: readable, writable
107 Boolean. Default: false
108op-buff-name : "buffer-name" as custom meta for o/p buffer (Default: CM node-name,if no CM element-name)
109 flags: readable, writable
110 String. Default: "simaaidecoder0"
111op-pool-cnt : o/p buffer count from pool as in next-element prop
112 flags: readable, writable
113 Integer. Range: 5 - 10 Default: 7
114parent : The parent of the object
115 flags: readable, writable, 0x2000
116 Object of type "GstObject"
Note
Please refer to simaaidecoder’s README file for more information.