20960391307

Committed 13 Jan 2026 02:10PM UTC coverage: 86.203% (-0.2%) from 86.374%

Build # 20960391307

Build Type

push

github

Committed by

web-flow

Commit Message

Now compatible with n8.0 (#178)

* n7.1: Migrate deprecated methods, fields, and definitions

* n7.1: Add new definitions

* n7.1: Add new field

* n7.1: Update doxygen url

* n8.0: Clean up remaining n7.x deprecations

* n8.0: Add new CodecIDs and fields

* n8.0: Migration to n8.0

* n8.0: Refactor swscale with Publicly expose struct SwsContext, enum SwsDither, and enum SwsAlphaBlend

n8.0: Stash commit

* n8.0: Update doxygen url

* n8.0: Fix windows.patch to apply new library.mak in n8.0

* n8.0: Clean up and organize the APIs, remove redundant implementations, and reorder the enum fields

* n8.0: Refactor SoftwareScaleContext to simplify and optimize update logic and remove redundant code

* Add tests for supported sample rates and frame rates in codec encoders

* Revert changes in `Free` and `Class`, other minor improvements

* Adapt the examples to the current library

* Update breaking changes

Coverage Stats

109 of 112 new or added lines in 5 files covered. (97.32%)

1 existing line in 1 file now uncovered.

3049 of 3537 relevant lines covered (86.2%)

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92.92

/software_scale_context.go

package astiav

//#include <libswscale/swscale.h>
import "C"
import (
        "errors"
        "unsafe"
)

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html
type SoftwareScaleContext struct {
        c *C.struct_SwsContext
}

type softwareScaleContextUpdate struct {
        dstFormat PixelFormat
        dstH      int
        dstW      int
        flags     SoftwareScaleContextFlags
        srcFormat PixelFormat
        srcH      int
        srcW      int
}

func newSoftwareScaleContextFromC(c *C.struct_SwsContext) *SoftwareScaleContext {
        if c == nil {
                return nil
        }
        return &SoftwareScaleContext{c: c}
}

// https://ffmpeg.org/doxygen/8.0/group__libsws.html#ga59cc19eff0434e7ec11676dc5e222ff3
func CreateSoftwareScaleContext(srcW, srcH int, srcFormat PixelFormat, dstW, dstH int, dstFormat PixelFormat, flags SoftwareScaleContextFlags) (*SoftwareScaleContext, error) {
        ssc := newSoftwareScaleContextFromC(C.sws_getContext(C.int(srcW), C.int(srcH), C.enum_AVPixelFormat(srcFormat), C.int(dstW), C.int(dstH), C.enum_AVPixelFormat(dstFormat), C.int(flags), nil, nil, nil))
        if ssc == nil {
                return nil, errors.New("astiav: empty new context")
        }

        classers.set(ssc)
        return ssc, nil
}

// https://ffmpeg.org/doxygen/8.0/group__libsws.html#gad90b463ceeafdfd526994742f9954dbb
func (ssc *SoftwareScaleContext) Free() {
        if ssc.c != nil {
                // Make sure to clone the classer before freeing the object since
                // the C free method may reset the pointer
                c := newClonedClasser(ssc)
                C.sws_freeContext(ssc.c)
                ssc.c = nil
                // Make sure to remove from classers after freeing the object since
                // the C free method may use methods needing the classer
                if c != nil {
                        classers.del(c)
                }
        }
}

var _ Classer = (*SoftwareScaleContext)(nil)

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a6866f52574bc730833d2580abc806261
func (ssc *SoftwareScaleContext) Class() *Class {
        if ssc.c == nil {
                return nil
        }
        return newClassFromC(unsafe.Pointer(ssc.c))
}

// https://ffmpeg.org/doxygen/8.0/swscale-v2_8txt.html#a20ffff3ac1378332422b93ed70264f4c
func (ssc *SoftwareScaleContext) ScaleFrame(src, dst *Frame) error {
        return newError(C.sws_scale_frame(ssc.c, dst.c, src.c))
}

// https://ffmpeg.org/doxygen/8.0/group__libsws.html#ga9fd74ceaf0f126f762b81e3677f70c75
func (ssc *SoftwareScaleContext) update(fn func(update *softwareScaleContextUpdate)) error {
        u := &softwareScaleContextUpdate{
                dstFormat: ssc.DestinationPixelFormat(),
                dstH:      ssc.DestinationHeight(),
                dstW:      ssc.DestinationWidth(),
                flags:     ssc.Flags(),
                srcFormat: ssc.SourcePixelFormat(),
                srcH:      ssc.SourceHeight(),
                srcW:      ssc.SourceWidth(),
        }

        fn(u)

        c := C.sws_getCachedContext(
                ssc.c,
                C.int(u.srcW),
                C.int(u.srcH),
                C.enum_AVPixelFormat(u.srcFormat),
                C.int(u.dstW),
                C.int(u.dstH),
                C.enum_AVPixelFormat(u.dstFormat),
                C.int(u.flags),
                nil, nil, nil,
        )
        if c == nil {
                return errors.New("astiav: empty new context")
        }

        ssc.c = c

        return nil
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aef45de443b59978fd38ad1531c618574
func (ssc *SoftwareScaleContext) Flags() SoftwareScaleContextFlags {
        return SoftwareScaleContextFlags(ssc.c.flags)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aef45de443b59978fd38ad1531c618574
func (ssc *SoftwareScaleContext) SetFlags(swscf SoftwareScaleContextFlags) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.flags = swscf })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a883a891c8a2d4ea7a15a3a7055f64386
func (ssc *SoftwareScaleContext) DestinationWidth() int {
        return int(ssc.c.dst_w)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a883a891c8a2d4ea7a15a3a7055f64386
func (ssc *SoftwareScaleContext) SetDestinationWidth(i int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.dstW = i })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a7facd34608c9258dae8c2942e3dce78f
func (ssc *SoftwareScaleContext) DestinationHeight() int {
        return int(ssc.c.dst_h)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a7facd34608c9258dae8c2942e3dce78f
func (ssc *SoftwareScaleContext) SetDestinationHeight(i int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.dstH = i })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
func (ssc *SoftwareScaleContext) DestinationPixelFormat() PixelFormat {
        return PixelFormat(ssc.c.dst_format)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
func (ssc *SoftwareScaleContext) SetDestinationPixelFormat(p PixelFormat) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.dstFormat = p })
}

func (ssc *SoftwareScaleContext) DestinationResolution() (width int, height int) {
        return int(ssc.c.dst_w), int(ssc.c.dst_h)
}

func (ssc *SoftwareScaleContext) SetDestinationResolution(w int, h int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) {
                u.dstW = w
                u.dstH = h
        })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aa7dc7a4f9ec57a7c37957259a51cd920
func (ssc *SoftwareScaleContext) SourceWidth() int {
        return int(ssc.c.src_w)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
func (ssc *SoftwareScaleContext) SetSourceWidth(i int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.srcW = i })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0dbc8c02bd3b4cd472e07008009751ff
func (ssc *SoftwareScaleContext) SourceHeight() int {
        return int(ssc.c.src_h)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
func (ssc *SoftwareScaleContext) SetSourceHeight(i int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.srcH = i })
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aab113373f157ee3b255ad97481af0cd9
func (ssc *SoftwareScaleContext) SourcePixelFormat() PixelFormat {
        return PixelFormat(ssc.c.src_format)
}

// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aab113373f157ee3b255ad97481af0cd9
func (ssc *SoftwareScaleContext) SetSourcePixelFormat(p PixelFormat) error {
        return ssc.update(func(u *softwareScaleContextUpdate) { u.srcFormat = p })
}

func (ssc *SoftwareScaleContext) SourceResolution() (int, int) {
        return int(ssc.c.src_w), int(ssc.c.src_h)
}

func (ssc *SoftwareScaleContext) SetSourceResolution(w int, h int) error {
        return ssc.update(func(u *softwareScaleContextUpdate) {
                u.srcW = w
                u.srcH = h
        })
}

1	package astiav
2
3	//#include <libswscale/swscale.h>
4	import "C"
5	import (
6	"errors"
7	"unsafe"
8	)
9
10	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html
11	type SoftwareScaleContext struct {
12	c *C.struct_SwsContext
13	}
14
15	type softwareScaleContextUpdate struct {
16	dstFormat PixelFormat
17	dstH int
18	dstW int
19	flags SoftwareScaleContextFlags
20	srcFormat PixelFormat
21	srcH int
22	srcW int
23	}
24
25	func newSoftwareScaleContextFromC(c C.struct_SwsContext) SoftwareScaleContext {	9✔
26	if c == nil {	9✔
NEW 27	return nil	×
UNCOV 28	}	×
29	return &SoftwareScaleContext{c: c}	9✔
30	}
31
32	// https://ffmpeg.org/doxygen/8.0/group__libsws.html#ga59cc19eff0434e7ec11676dc5e222ff3
33	func CreateSoftwareScaleContext(srcW, srcH int, srcFormat PixelFormat, dstW, dstH int, dstFormat PixelFormat, flags SoftwareScaleContextFlags) (*SoftwareScaleContext, error) {	9✔
34	ssc := newSoftwareScaleContextFromC(C.sws_getContext(C.int(srcW), C.int(srcH), C.enum_AVPixelFormat(srcFormat), C.int(dstW), C.int(dstH), C.enum_AVPixelFormat(dstFormat), C.int(flags), nil, nil, nil))	9✔
35	if ssc == nil {	9✔
36	return nil, errors.New("astiav: empty new context")	×
37	}	×
38
39	classers.set(ssc)	9✔
40	return ssc, nil	9✔
41	}
42
43	// https://ffmpeg.org/doxygen/8.0/group__libsws.html#gad90b463ceeafdfd526994742f9954dbb
44	func (ssc *SoftwareScaleContext) Free() {	6✔
45	if ssc.c != nil {	12✔
46	// Make sure to clone the classer before freeing the object since	6✔
47	// the C free method may reset the pointer	6✔
48	c := newClonedClasser(ssc)	6✔
49	C.sws_freeContext(ssc.c)	6✔
50	ssc.c = nil	6✔
51	// Make sure to remove from classers after freeing the object since	6✔
52	// the C free method may use methods needing the classer	6✔
53	if c != nil {	12✔
54	classers.del(c)	6✔
55	}	6✔
56	}
57	}
58
59	var _ Classer = (*SoftwareScaleContext)(nil)
60
61	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a6866f52574bc730833d2580abc806261
62	func (ssc SoftwareScaleContext) Class() Class {	18✔
63	if ssc.c == nil {	18✔
64	return nil	×
65	}	×
66	return newClassFromC(unsafe.Pointer(ssc.c))	18✔
67	}
68
69	// https://ffmpeg.org/doxygen/8.0/swscale-v2_8txt.html#a20ffff3ac1378332422b93ed70264f4c
70	func (ssc SoftwareScaleContext) ScaleFrame(src, dst Frame) error {	6✔
71	return newError(C.sws_scale_frame(ssc.c, dst.c, src.c))	6✔
72	}	6✔
73
74	// https://ffmpeg.org/doxygen/8.0/group__libsws.html#ga9fd74ceaf0f126f762b81e3677f70c75
75	func (ssc SoftwareScaleContext) update(fn func(update softwareScaleContextUpdate)) error {	27✔
76	u := &softwareScaleContextUpdate{	27✔
77	dstFormat: ssc.DestinationPixelFormat(),	27✔
78	dstH: ssc.DestinationHeight(),	27✔
79	dstW: ssc.DestinationWidth(),	27✔
80	flags: ssc.Flags(),	27✔
81	srcFormat: ssc.SourcePixelFormat(),	27✔
82	srcH: ssc.SourceHeight(),	27✔
83	srcW: ssc.SourceWidth(),	27✔
84	}	27✔
85		27✔
86	fn(u)	27✔
87		27✔
88	c := C.sws_getCachedContext(	27✔
89	ssc.c,	27✔
90	C.int(u.srcW),	27✔
91	C.int(u.srcH),	27✔
92	C.enum_AVPixelFormat(u.srcFormat),	27✔
93	C.int(u.dstW),	27✔
94	C.int(u.dstH),	27✔
95	C.enum_AVPixelFormat(u.dstFormat),	27✔
96	C.int(u.flags),	27✔
97	nil, nil, nil,	27✔
98	)	27✔
99	if c == nil {	27✔
100	return errors.New("astiav: empty new context")	×
101	}	×
102
103	ssc.c = c	27✔
104		27✔
105	return nil	27✔
106	}
107
108	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aef45de443b59978fd38ad1531c618574
109	func (ssc *SoftwareScaleContext) Flags() SoftwareScaleContextFlags {	33✔
110	return SoftwareScaleContextFlags(ssc.c.flags)	33✔
111	}	33✔
112
113	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aef45de443b59978fd38ad1531c618574
114	func (ssc *SoftwareScaleContext) SetFlags(swscf SoftwareScaleContextFlags) error {	3✔
115	return ssc.update(func(u *softwareScaleContextUpdate) { u.flags = swscf })	6✔
116	}
117
118	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a883a891c8a2d4ea7a15a3a7055f64386
119	func (ssc *SoftwareScaleContext) DestinationWidth() int {	33✔
120	return int(ssc.c.dst_w)	33✔
121	}	33✔
122
123	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a883a891c8a2d4ea7a15a3a7055f64386
124	func (ssc *SoftwareScaleContext) SetDestinationWidth(i int) error {	3✔
125	return ssc.update(func(u *softwareScaleContextUpdate) { u.dstW = i })	6✔
126	}
127
128	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a7facd34608c9258dae8c2942e3dce78f
129	func (ssc *SoftwareScaleContext) DestinationHeight() int {	33✔
130	return int(ssc.c.dst_h)	33✔
131	}	33✔
132
133	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a7facd34608c9258dae8c2942e3dce78f
134	func (ssc *SoftwareScaleContext) SetDestinationHeight(i int) error {	3✔
135	return ssc.update(func(u *softwareScaleContextUpdate) { u.dstH = i })	6✔
136	}
137
138	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
139	func (ssc *SoftwareScaleContext) DestinationPixelFormat() PixelFormat {	33✔
140	return PixelFormat(ssc.c.dst_format)	33✔
141	}	33✔
142
143	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
144	func (ssc *SoftwareScaleContext) SetDestinationPixelFormat(p PixelFormat) error {	3✔
145	return ssc.update(func(u *softwareScaleContextUpdate) { u.dstFormat = p })	6✔
146	}
147
148	func (ssc *SoftwareScaleContext) DestinationResolution() (width int, height int) {	6✔
149	return int(ssc.c.dst_w), int(ssc.c.dst_h)	6✔
150	}	6✔
151
152	func (ssc *SoftwareScaleContext) SetDestinationResolution(w int, h int) error {	3✔
153	return ssc.update(func(u *softwareScaleContextUpdate) {	6✔
154	u.dstW = w	3✔
155	u.dstH = h	3✔
156	})	3✔
157	}
158
159	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aa7dc7a4f9ec57a7c37957259a51cd920
160	func (ssc *SoftwareScaleContext) SourceWidth() int {	33✔
161	return int(ssc.c.src_w)	33✔
162	}	33✔
163
164	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
165	func (ssc *SoftwareScaleContext) SetSourceWidth(i int) error {	3✔
166	return ssc.update(func(u *softwareScaleContextUpdate) { u.srcW = i })	6✔
167	}
168
169	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0dbc8c02bd3b4cd472e07008009751ff
170	func (ssc *SoftwareScaleContext) SourceHeight() int {	33✔
171	return int(ssc.c.src_h)	33✔
172	}	33✔
173
174	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#a0ff71c9ef5ab6dabf90378fa7bf836ec
175	func (ssc *SoftwareScaleContext) SetSourceHeight(i int) error {	3✔
176	return ssc.update(func(u *softwareScaleContextUpdate) { u.srcH = i })	6✔
177	}
178
179	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aab113373f157ee3b255ad97481af0cd9
180	func (ssc *SoftwareScaleContext) SourcePixelFormat() PixelFormat {	33✔
181	return PixelFormat(ssc.c.src_format)	33✔
182	}	33✔
183
184	// https://ffmpeg.org/doxygen/8.0/structSwsContext.html#aab113373f157ee3b255ad97481af0cd9
185	func (ssc *SoftwareScaleContext) SetSourcePixelFormat(p PixelFormat) error {	3✔
186	return ssc.update(func(u *softwareScaleContextUpdate) { u.srcFormat = p })	6✔
187	}
188
189	func (ssc *SoftwareScaleContext) SourceResolution() (int, int) {	6✔
190	return int(ssc.c.src_w), int(ssc.c.src_h)	6✔
191	}	6✔
192
193	func (ssc *SoftwareScaleContext) SetSourceResolution(w int, h int) error {	3✔
194	return ssc.update(func(u *softwareScaleContextUpdate) {	6✔
195	u.srcW = w	3✔
196	u.srcH = h	3✔
197	})	3✔
198	}

asticode / go-astiav / 20960391307

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