-
Notifications
You must be signed in to change notification settings - Fork 47
/
main.go
181 lines (151 loc) · 5.57 KB
/
main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
package main
import (
"errors"
"flag"
"fmt"
"log"
"strings"
"github.com/asticode/go-astiav"
)
var (
encoderCodecName = flag.String("c", "", "the encoder codec name (e.g. h264_nvenc)")
hardwareDeviceName = flag.String("n", "", "the hardware device name (e.g. 0)")
hardwareDeviceTypeName = flag.String("t", "", "the hardware device type (e.g. cuda)")
hardwarePixelFormatName = flag.String("hpf", "", "the hardware pixel format name (e.g. cuda)")
height = flag.Int("h", 1080, "the height")
softwarePixelFormatName = flag.String("spf", "", "the software pixel format name (e.g. nv12)")
width = flag.Int("w", 1920, "the width")
)
func main() {
// Handle ffmpeg logs
astiav.SetLogLevel(astiav.LogLevelDebug)
astiav.SetLogCallback(func(c astiav.Classer, l astiav.LogLevel, fmt, msg string) {
var cs string
if c != nil {
if cl := c.Class(); cl != nil {
cs = " - class: " + cl.String()
}
}
log.Printf("ffmpeg log: %s%s - level: %d\n", strings.TrimSpace(msg), cs, l)
})
// Parse flags
flag.Parse()
// Usage
if *hardwareDeviceTypeName == "" || *encoderCodecName == "" || *hardwarePixelFormatName == "" {
log.Println("Usage: <binary path> -t <hardware device type> -c <encoder codec> -hpf <hardware pixel format> [-n <hardware device name> -w <width> -h <height>]")
return
}
// Get hardware device type
hardwareDeviceType := astiav.FindHardwareDeviceTypeByName(*hardwareDeviceTypeName)
if hardwareDeviceType == astiav.HardwareDeviceTypeNone {
log.Fatal(errors.New("main: hardware device not found"))
}
// Create hardware device context
hardwareDeviceContext, err := astiav.CreateHardwareDeviceContext(hardwareDeviceType, *hardwareDeviceName, nil, 0)
if err != nil {
log.Fatal(fmt.Errorf("main: creating hardware device context failed: %w", err))
}
defer hardwareDeviceContext.Free()
// Find encoder codec
encCodec := astiav.FindEncoderByName(*encoderCodecName)
if encCodec == nil {
log.Fatal("main: encoder codec is nil")
}
// Alloc codec context
encCodecContext := astiav.AllocCodecContext(encCodec)
if encCodecContext == nil {
log.Fatal("main: codec context is nil")
}
defer encCodecContext.Free()
// Get hardware pixel format
hardwarePixelFormat := astiav.FindPixelFormatByName(*hardwarePixelFormatName)
if hardwarePixelFormat == astiav.PixelFormatNone {
log.Fatal("main: hardware pixel format not found")
}
// Set codec context
encCodecContext.SetWidth(*width)
encCodecContext.SetHeight(*height)
encCodecContext.SetTimeBase(astiav.NewRational(1, 25))
encCodecContext.SetFramerate(encCodecContext.TimeBase().Invert())
encCodecContext.SetPixelFormat(hardwarePixelFormat)
// Alloc hardware frames context
hardwareFramesContext := astiav.AllocHardwareFramesContext(hardwareDeviceContext)
if hardwareFramesContext == nil {
log.Fatal("main: hardware frames context is nil")
}
defer hardwareFramesContext.Free()
// Get software pixel format
softwarePixelFormat := astiav.FindPixelFormatByName(*softwarePixelFormatName)
if softwarePixelFormat == astiav.PixelFormatNone {
log.Fatal("main: software pixel format not found")
}
// Set hardware frame content
hardwareFramesContext.SetHardwarePixelFormat(hardwarePixelFormat)
hardwareFramesContext.SetSoftwarePixelFormat(softwarePixelFormat)
hardwareFramesContext.SetWidth(*width)
hardwareFramesContext.SetHeight(*height)
hardwareFramesContext.SetInitialPoolSize(20)
// Initialize hardware frame context
if err := hardwareFramesContext.Initialize(); err != nil {
log.Fatal(fmt.Errorf("main: initializing hardware frame context failed: %w", err))
}
// Update encoder codec context hardware frame context
encCodecContext.SetHardwareFramesContext(hardwareFramesContext)
// Open codec context
if err := encCodecContext.Open(encCodec, nil); err != nil {
log.Fatal(fmt.Errorf("main: opening codec context failed: %w", err))
}
// Alloc software frame
softwareFrame := astiav.AllocFrame()
defer softwareFrame.Free()
// Set software frame
softwareFrame.SetWidth(*width)
softwareFrame.SetHeight(*height)
softwareFrame.SetPixelFormat(softwarePixelFormat)
// Alloc software frame buffer
if err := softwareFrame.AllocBuffer(0); err != nil {
log.Fatal(fmt.Errorf("main: allocating buffer failed: %w", err))
}
// Fill software frame with black
if err = softwareFrame.ImageFillBlack(); err != nil {
log.Fatal(fmt.Errorf("main: filling software frame with black failed: %w", err))
}
// Alloc hardware frame
hardwareFrame := astiav.AllocFrame()
defer hardwareFrame.Free()
// Alloc hardware frame buffer
if err := hardwareFrame.AllocHardwareBuffer(hardwareFramesContext); err != nil {
log.Fatal(fmt.Errorf("main: allocating hardware buffer failed: %w", err))
}
// Transfer software frame data to hardware frame
if err := softwareFrame.TransferHardwareData(hardwareFrame); err != nil {
log.Fatal(fmt.Errorf("main: transferring hardware data failed: %w", err))
}
// Encode frame
if err := encCodecContext.SendFrame(hardwareFrame); err != nil {
log.Fatal(fmt.Errorf("main: sending frame failed: %w", err))
}
// Alloc packet
pkt := astiav.AllocPacket()
defer pkt.Free()
// Loop
for {
// We use a closure to ease unreferencing the packet
if stop := func() bool {
// Receive packet
if err = encCodecContext.ReceivePacket(pkt); err != nil {
if errors.Is(err, astiav.ErrEof) || errors.Is(err, astiav.ErrEagain) {
return true
}
log.Fatal(fmt.Errorf("main: receiving packet failed: %w", err))
}
// Make sure to unreference packet
defer pkt.Unref()
// Log
log.Println("new packet")
return false
}(); stop {
break
}
}
}