Added FrameData

.github/workflows/test.yml

@@ -2,7 +2,7 @@ name: Test
 
 on:
   push:
-    branches: [ "master", "test" ]
+    branches: [ "master", "dev" ]
   pull_request:
     branches: [ "master" ]
 
@@ -10,6 +10,7 @@ jobs:
 
   test:
     strategy:
+      fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
 
@@ -41,35 +42,42 @@ jobs:
       run: |
         echo "FFMPEG_CACHE_PATH=${{ env.FFMPEG_PATH }}" >> $GITHUB_ENV
 
-    - name: Cache windows ffmpeg
-      id: cache-ffmpeg
+    - name: Load ffmpeg cache
+      id: load-ffmpeg-cache
       uses: actions/cache@v3
       with:
         path: ${{ env.FFMPEG_CACHE_PATH }}
         key: ffmpeg-${{ env.FFMPEG_VERSION }}-${{ runner.os }}
 
-    - if: ${{ steps.cache-ffmpeg.outputs.cache-hit != 'true' && runner.os == 'Linux' }}
+    - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' && runner.os == 'Linux' }}
       name: Prepare linux ffmpeg install
       run: |
         sudo apt-get install yasm
 
-    - if: ${{ steps.cache-ffmpeg.outputs.cache-hit != 'true' && runner.os == 'macOS' }}
+    - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' && runner.os == 'macOS' }}
       name: Prepare macos ffmpeg install
       run: |
         brew install yasm
 
-    - if: ${{ steps.cache-ffmpeg.outputs.cache-hit != 'true' && runner.os == 'Windows' }}
+    - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' && runner.os == 'Windows' }}
       name: Prepare windows ffmpeg install
       run: |
         choco install make
         choco install yasm
         echo "FFMPEG_POST_CHECKOUT='&& git apply $(cygpath -u ${{ github.WORKSPACE }})/.github/workflows/windows.patch'" >> $env:GITHUB_ENV
 
-    - if: ${{ steps.cache-ffmpeg.outputs.cache-hit != 'true' }}
+    - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' }}
       name: Install ffmpeg
       run: |
         make install-ffmpeg srcPath=${{ env.FFMPEG_PATH }}/src version=${{ env.FFMPEG_VERSION }} postCheckout=${{ env.FFMPEG_POST_CHECKOUT }}
 
+    - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' }}
+      name: Save ffmpeg cache
+      uses: actions/cache/save@v3
+      with:
+        path: ${{ env.FFMPEG_CACHE_PATH }}
+        key: ffmpeg-${{ env.FFMPEG_VERSION }}-${{ runner.os }}
+
     - if: ${{ runner.os == 'Windows' }}
       name: Set windows environment variables
       run: |

astiav_test.go

@@ -1,31 +1,242 @@
 package astiav_test
 
 import (
+	"errors"
+	"fmt"
 	"os"
+	"sync"
 	"testing"
 
 	"github.com/asticode/go-astiav"
 	"github.com/asticode/go-astikit"
 )
 
-var global = struct {
-	closer             *astikit.Closer
-	frame              *astiav.Frame
-	inputFormatContext *astiav.FormatContext
-	inputStream1       *astiav.Stream
-	inputStream2       *astiav.Stream
-	pkt                *astiav.Packet
-}{
-	closer: astikit.NewCloser(),
-}
+var globalHelper = newHelper()
 
 func TestMain(m *testing.M) {
 	// Run
 	m.Run()
 
-	// Make sure to close closer
-	global.closer.Close()
+	// Make sure to close global helper
+	globalHelper.close()
 
 	// Exit
 	os.Exit(0)
 }
+
+type helper struct {
+	closer *astikit.Closer
+	inputs map[string]*helperInput
+	m      *sync.Mutex // Locks inputs
+}
+
+func newHelper() *helper {
+	return &helper{
+		closer: astikit.NewCloser(),
+		inputs: make(map[string]*helperInput),
+		m:      &sync.Mutex{},
+	}
+}
+
+func (h *helper) close() {
+	h.closer.Close()
+}
+
+type helperInput struct {
+	firstPkt      *astiav.Packet
+	formatContext *astiav.FormatContext
+	lastFrame     *astiav.Frame
+}
+
+func (h *helper) inputFormatContext(name string) (fc *astiav.FormatContext, err error) {
+	h.m.Lock()
+	i, ok := h.inputs[name]
+	if ok && i.formatContext != nil {
+		h.m.Unlock()
+		return i.formatContext, nil
+	}
+	h.m.Unlock()
+
+	if fc = astiav.AllocFormatContext(); fc == nil {
+		err = errors.New("astiav_test: allocated format context is nil")
+		return
+	}
+	h.closer.Add(fc.Free)
+
+	if err = fc.OpenInput("testdata/"+name, nil, nil); err != nil {
+		err = fmt.Errorf("astiav_test: opening input failed: %w", err)
+		return
+	}
+	h.closer.Add(fc.CloseInput)
+
+	if err = fc.FindStreamInfo(nil); err != nil {
+		err = fmt.Errorf("astiav_test: finding stream info failed: %w", err)
+		return
+	}
+
+	h.m.Lock()
+	if _, ok := h.inputs[name]; !ok {
+		h.inputs[name] = &helperInput{}
+	}
+	h.inputs[name].formatContext = fc
+	h.m.Unlock()
+	return
+}
+
+func (h *helper) inputFirstPacket(name string) (pkt *astiav.Packet, err error) {
+	h.m.Lock()
+	i, ok := h.inputs[name]
+	if ok && i.firstPkt != nil {
+		h.m.Unlock()
+		return i.firstPkt, nil
+	}
+	h.m.Unlock()
+
+	var fc *astiav.FormatContext
+	if fc, err = h.inputFormatContext(name); err != nil {
+		err = fmt.Errorf("astiav_test: getting input format context failed")
+		return
+	}
+
+	pkt = astiav.AllocPacket()
+	if pkt == nil {
+		err = errors.New("astiav_test: pkt is nil")
+		return
+	}
+	h.closer.Add(pkt.Free)
+
+	if err = fc.ReadFrame(pkt); err != nil {
+		err = fmt.Errorf("astiav_test: reading frame failed: %w", err)
+		return
+	}
+
+	h.m.Lock()
+	h.inputs[name].firstPkt = pkt
+	h.m.Unlock()
+	return
+}
+
+func (h *helper) inputLastFrame(name string, mediaType astiav.MediaType) (f *astiav.Frame, err error) {
+	h.m.Lock()
+	i, ok := h.inputs[name]
+	if ok && i.lastFrame != nil {
+		h.m.Unlock()
+		return i.lastFrame, nil
+	}
+	h.m.Unlock()
+
+	var fc *astiav.FormatContext
+	if fc, err = h.inputFormatContext(name); err != nil {
+		err = fmt.Errorf("astiav_test: getting input format context failed: %w", err)
+		return
+	}
+
+	var cc *astiav.CodecContext
+	var cs *astiav.Stream
+	for _, s := range fc.Streams() {
+		if s.CodecParameters().MediaType() != mediaType {
+			continue
+		}
+
+		cs = s
+
+		c := astiav.FindDecoder(s.CodecParameters().CodecID())
+		if c == nil {
+			err = errors.New("astiav_test: no codec")
+			return
+		}
+
+		cc = astiav.AllocCodecContext(c)
+		if cc == nil {
+			err = errors.New("astiav_test: no codec context")
+			return
+		}
+		h.closer.Add(cc.Free)
+
+		if err = cs.CodecParameters().ToCodecContext(cc); err != nil {
+			err = fmt.Errorf("astiav_test: updating codec context failed: %w", err)
+			return
+		}
+
+		if err = cc.Open(c, nil); err != nil {
+			err = fmt.Errorf("astiav_test: opening codec context failed: %w", err)
+			return
+		}
+		break
+	}
+
+	if cs == nil {
+		err = errors.New("astiav_test: no valid video stream")
+		return
+	}
+
+	var pkt1 *astiav.Packet
+	if pkt1, err = h.inputFirstPacket(name); err != nil {
+		err = fmt.Errorf("astiav_test: getting input first packet failed: %w", err)
+		return
+	}
+
+	pkt2 := astiav.AllocPacket()
+	h.closer.Add(pkt2.Free)
+
+	f = astiav.AllocFrame()
+	h.closer.Add(f.Free)
+
+	lastFrame := astiav.AllocFrame()
+	h.closer.Add(lastFrame.Free)
+
+	pkts := []*astiav.Packet{pkt1}
+	for {
+		if err = fc.ReadFrame(pkt2); err != nil {
+			if errors.Is(err, astiav.ErrEof) || errors.Is(err, astiav.ErrEagain) {
+				if len(pkts) == 0 {
+					if err = f.Ref(lastFrame); err != nil {
+						err = fmt.Errorf("astiav_test: last refing frame failed: %w", err)
+						return
+					}
+					err = nil
+					break
+				}
+			} else {
+				err = fmt.Errorf("astiav_test: reading frame failed: %w", err)
+				return
+			}
+		} else {
+			pkts = append(pkts, pkt2)
+		}
+
+		for _, pkt := range pkts {
+			if pkt.StreamIndex() != cs.Index() {
+				continue
+			}
+
+			if err = cc.SendPacket(pkt); err != nil {
+				err = fmt.Errorf("astiav_test: sending packet failed: %w", err)
+				return
+			}
+
+			for {
+				if err = cc.ReceiveFrame(f); err != nil {
+					if errors.Is(err, astiav.ErrEof) || errors.Is(err, astiav.ErrEagain) {
+						err = nil
+						break
+					}
+					err = fmt.Errorf("astiav_test: receiving frame failed: %w", err)
+					return
+				}
+
+				if err = lastFrame.Ref(f); err != nil {
+					err = fmt.Errorf("astiav_test: refing frame failed: %w", err)
+					return
+				}
+			}
+		}
+
+		pkts = []*astiav.Packet{}
+	}
+
+	h.m.Lock()
+	h.inputs[name].lastFrame = f
+	h.m.Unlock()
+	return
+}

codec_context_test.go

@@ -8,8 +8,12 @@ import (
 )
 
 func TestCodecContext(t *testing.T) {
-	_, s1, s2, err := videoInputStreams()
+	fc, err := globalHelper.inputFormatContext("video.mp4")
 	require.NoError(t, err)
+	ss := fc.Streams()
+	require.Len(t, ss, 2)
+	s1 := ss[0]
+	s2 := ss[1]
 
 	c1 := astiav.FindDecoder(s1.CodecParameters().CodecID())
 	require.NotNil(t, c1)

codec_parameters_test.go

@@ -8,8 +8,12 @@ import (
 )
 
 func TestCodecParameters(t *testing.T) {
-	_, s1, s2, err := videoInputStreams()
+	fc, err := globalHelper.inputFormatContext("video.mp4")
 	require.NoError(t, err)
+	ss := fc.Streams()
+	require.Len(t, ss, 2)
+	s1 := ss[0]
+	s2 := ss[1]
 
 	cp1 := s1.CodecParameters()
 	require.Equal(t, int64(441324), cp1.BitRate())

format_context_test.go

@@ -1,43 +1,18 @@
 package astiav_test
 
 import (
-	"errors"
-	"fmt"
 	"testing"
 
 	"github.com/asticode/go-astiav"
 	"github.com/stretchr/testify/require"
 )
 
-func videoInputFormatContext() (fc1 *astiav.FormatContext, err error) {
-	if global.inputFormatContext != nil {
-		return global.inputFormatContext, nil
-	}
-
-	if fc1 = astiav.AllocFormatContext(); fc1 == nil {
-		err = errors.New("astiav_test: allocated format context is nil")
-		return
-	}
-	global.closer.Add(fc1.Free)
-
-	if err = fc1.OpenInput("testdata/video.mp4", nil, nil); err != nil {
-		err = fmt.Errorf("astiav_test: opening input failed: %w", err)
-		return
-	}
-	global.closer.Add(fc1.CloseInput)
-
-	if err = fc1.FindStreamInfo(nil); err != nil {
-		err = fmt.Errorf("astiav_test: finding stream info failed: %w", err)
-		return
-	}
-
-	global.inputFormatContext = fc1
-	return
-}
-
 func TestFormatContext(t *testing.T) {
-	fc1, s1, _, err := videoInputStreams()
+	fc1, err := globalHelper.inputFormatContext("video.mp4")
 	require.NoError(t, err)
+	ss := fc1.Streams()
+	require.Len(t, ss, 2)
+	s1 := ss[0]
 
 	require.Equal(t, int64(607583), fc1.BitRate())
 	require.Equal(t, astiav.NewFormatContextCtxFlags(0), fc1.CtxFlags())

frame.go

@@ -6,6 +6,7 @@ package astiav
 //#include <libavutil/imgutils.h>
 //#include <libavutil/samplefmt.h>
 import "C"
+import "unsafe"
 
 const NumDataPointers = uint(C.AV_NUM_DATA_POINTERS)
 
@@ -53,20 +54,8 @@ func (f *Frame) SetColorRange(r ColorRange) {
 	f.c.color_range = C.enum_AVColorRange(r)
 }
 
-func (f *Frame) Data() [NumDataPointers][]byte {
-	b := [NumDataPointers][]byte{}
-	for i := 0; i < int(NumDataPointers); i++ {
-		b[i] = bytesFromC(func(size *cUlong) *C.uint8_t {
-			*size = cUlong(f.c.linesize[i])
-			if f.c.height > 0 {
-				*size = *size * cUlong(f.c.height)
-			} else if f.c.channels > 0 {
-				*size = *size * cUlong(f.c.channels)
-			}
-			return f.c.data[i]
-		})
-	}
-	return b
+func (f *Frame) Data() *FrameData {
+	return newFrameData(f)
 }
 
 func (f *Frame) Height() int {
@@ -89,6 +78,22 @@ func (f *Frame) SetKeyFrame(k bool) {
 	f.c.key_frame = C.int(i)
 }
 
+func (f *Frame) ImageBufferSize(align int) (int, error) {
+	ret := C.av_image_get_buffer_size((C.enum_AVSampleFormat)(f.c.format), f.c.width, f.c.height, C.int(align))
+	if ret < 0 {
+		return 0, newError(ret)
+	}
+	return int(ret), nil
+}
+
+func (f *Frame) ImageCopyToBuffer(b []byte, align int) (int, error) {
+	ret := C.av_image_copy_to_buffer((*C.uint8_t)(unsafe.Pointer(&b[0])), C.int(len(b)), &f.c.data[0], &f.c.linesize[0], (C.enum_AVSampleFormat)(f.c.format), f.c.width, f.c.height, C.int(align))
+	if ret < 0 {
+		return 0, newError(ret)
+	}
+	return int(ret), nil
+}
+
 func (f *Frame) ImageFillBlack() error {
 	linesize := [NumDataPointers]cLong{}
 	for i := 0; i < int(NumDataPointers); i++ {

frame_data.go

@@ -0,0 +1,120 @@
+package astiav
+
+//#include <stdint.h>
+import "C"
+import (
+	"errors"
+	"fmt"
+	"image"
+	"strings"
+)
+
+type FrameData struct {
+	f *Frame
+}
+
+func newFrameData(f *Frame) *FrameData {
+	return &FrameData{f: f}
+}
+
+func (d *FrameData) Bytes(align int) ([]byte, error) {
+	switch {
+	// Video
+	case d.f.Height() > 0 && d.f.Width() > 0:
+		// Get buffer size
+		s, err := d.f.ImageBufferSize(align)
+		if err != nil {
+			return nil, fmt.Errorf("astiav: getting image buffer size failed: %w", err)
+		}
+
+		// Invalid buffer size
+		if s == 0 {
+			return nil, errors.New("astiav: invalid image buffer size")
+		}
+
+		// Create buffer
+		b := make([]byte, s)
+
+		// Copy image to buffer
+		if _, err = d.f.ImageCopyToBuffer(b, align); err != nil {
+			return nil, fmt.Errorf("astiav: copying image to buffer failed: %w", err)
+		}
+		return b, nil
+	}
+	return nil, errors.New("astiav: frame type not implemented")
+}
+
+func (d *FrameData) planeData(i int, sizeFunc func(linesize int) int) []byte {
+	return bytesFromC(func(size *cUlong) *C.uint8_t {
+		*size = cUlong(sizeFunc(int(d.f.c.linesize[i])))
+		return d.f.c.data[i]
+	})
+}
+
+func (d *FrameData) imageYCbCrSubsampleRatio() image.YCbCrSubsampleRatio {
+	name := d.f.PixelFormat().Name()
+	for s, r := range map[string]image.YCbCrSubsampleRatio{
+		"410": image.YCbCrSubsampleRatio410,
+		"411": image.YCbCrSubsampleRatio411,
+		"420": image.YCbCrSubsampleRatio420,
+		"422": image.YCbCrSubsampleRatio422,
+		"440": image.YCbCrSubsampleRatio440,
+		"444": image.YCbCrSubsampleRatio444,
+	} {
+		if strings.Contains(name, s) {
+			return r
+		}
+	}
+	return image.YCbCrSubsampleRatio444
+}
+
+func (d *FrameData) imageNRGBA() *image.NRGBA {
+	return &image.NRGBA{
+		Pix:    d.planeData(0, func(linesize int) int { return linesize * d.f.Height() }),
+		Stride: d.f.Linesize()[0],
+		Rect:   image.Rect(0, 0, d.f.Width(), d.f.Height()),
+	}
+}
+
+func (d *FrameData) imageYCbCr() *image.YCbCr {
+	return &image.YCbCr{
+		Y:              d.planeData(0, func(linesize int) int { return linesize * d.f.Height() }),
+		Cb:             d.planeData(1, func(linesize int) int { return linesize * d.f.Height() }),
+		Cr:             d.planeData(2, func(linesize int) int { return linesize * d.f.Height() }),
+		YStride:        d.f.Linesize()[0],
+		CStride:        d.f.Linesize()[1],
+		SubsampleRatio: d.imageYCbCrSubsampleRatio(),
+		Rect:           image.Rect(0, 0, d.f.Width(), d.f.Height()),
+	}
+}
+
+func (d *FrameData) imageNYCbCrA() *image.NYCbCrA {
+	return &image.NYCbCrA{
+		YCbCr:   *d.imageYCbCr(),
+		A:       d.planeData(3, func(linesize int) int { return linesize * d.f.Height() }),
+		AStride: d.f.Linesize()[3],
+	}
+}
+
+func (d *FrameData) Image() (image.Image, error) {
+	// Switch on pixel format
+	switch d.f.PixelFormat() {
+	// NRGBA
+	case PixelFormatRgba:
+		return d.imageNRGBA(), nil
+	// NYCbCrA
+	case PixelFormatYuva420P,
+		PixelFormatYuva422P,
+		PixelFormatYuva444P:
+		return d.imageNYCbCrA(), nil
+	// YCbCr
+	case PixelFormatYuv410P,
+		PixelFormatYuv411P, PixelFormatYuvj411P,
+		PixelFormatYuv420P, PixelFormatYuvj420P,
+		PixelFormatYuv422P, PixelFormatYuvj422P,
+		PixelFormatYuv440P, PixelFormatYuvj440P,
+		PixelFormatYuv444P, PixelFormatYuvj444P:
+		return d.imageYCbCr(), nil
+	}
+	return nil, fmt.Errorf("astiav: %s pixel format not handled by the Go standard image package", d.f.PixelFormat())
+}

frame_data_test.go

@@ -0,0 +1,47 @@
+package astiav_test
+
+import (
+	"image/png"
+	"os"
+	"testing"
+
+	"github.com/asticode/go-astiav"
+	"github.com/stretchr/testify/require"
+)
+
+func TestFrameData(t *testing.T) {
+	for _, v := range []struct {
+		ext  string
+		name string
+	}{
+		{
+			ext:  "png",
+			name: "image-rgba",
+		},
+		// TODO Find a way to test yuv and yuva even though result seems to change randomly
+	} {
+		// We use a closure to ease closing files
+		func() {
+			f, err := globalHelper.inputLastFrame(v.name+"."+v.ext, astiav.MediaTypeVideo)
+			require.NoError(t, err)
+			fd := f.Data()
+
+			b1, err := fd.Bytes(1)
+			require.NoError(t, err)
+
+			b2, err := os.ReadFile("testdata/" + v.name + "-bytes")
+			require.NoError(t, err)
+			require.Equal(t, b1, b2)
+
+			f1, err := os.Open("testdata/" + v.name + "." + v.ext)
+			require.NoError(t, err)
+			defer f1.Close()
+
+			i1, err := fd.Image()
+			require.NoError(t, err)
+			i2, err := png.Decode(f1)
+			require.NoError(t, err)
+			require.Equal(t, i1, i2)
+		}()
+	}
+}

frame_test.go

@@ -2,136 +2,15 @@ package astiav_test
 
 import (
 	"bytes"
-	"errors"
-	"fmt"
-	"os"
 	"testing"
 
 	"github.com/asticode/go-astiav"
 	"github.com/stretchr/testify/require"
 )
 
-func videoInputLastVideoFrame() (f *astiav.Frame, err error) {
-	if global.frame != nil {
-		return global.frame, nil
-	}
-
-	var fc *astiav.FormatContext
-	if fc, err = videoInputFormatContext(); err != nil {
-		err = fmt.Errorf("astiav_test: getting input format context failed: %w", err)
-		return
-	}
-
-	var cc *astiav.CodecContext
-	var cs *astiav.Stream
-	for _, s := range fc.Streams() {
-		if s.CodecParameters().MediaType() != astiav.MediaTypeVideo {
-			continue
-		}
-
-		cs = s
-
-		c := astiav.FindDecoder(s.CodecParameters().CodecID())
-		if c == nil {
-			err = errors.New("astiav_test: no codec")
-			return
-		}
-
-		cc = astiav.AllocCodecContext(c)
-		if cc == nil {
-			err = errors.New("astiav_test: no codec context")
-			return
-		}
-		global.closer.Add(cc.Free)
-
-		if err = cs.CodecParameters().ToCodecContext(cc); err != nil {
-			err = fmt.Errorf("astiav_test: updating codec context failed: %w", err)
-			return
-		}
-
-		if err = cc.Open(c, nil); err != nil {
-			err = fmt.Errorf("astiav_test: opening codec context failed: %w", err)
-			return
-		}
-		break
-	}
-
-	if cs == nil {
-		err = errors.New("astiav_test: no valid video stream")
-		return
-	}
-
-	var pkt1 *astiav.Packet
-	if pkt1, err = videoInputFirstPacket(); err != nil {
-		err = fmt.Errorf("astiav_test: getting input first packet failed: %w", err)
-		return
-	}
-
-	pkt2 := astiav.AllocPacket()
-	global.closer.Add(pkt2.Free)
-
-	f = astiav.AllocFrame()
-	global.closer.Add(f.Free)
-
-	lastFrame := astiav.AllocFrame()
-	global.closer.Add(lastFrame.Free)
-
-	pkts := []*astiav.Packet{pkt1}
-	for {
-		if err = fc.ReadFrame(pkt2); err != nil {
-			if errors.Is(err, astiav.ErrEof) || errors.Is(err, astiav.ErrEagain) {
-				if err = f.Ref(lastFrame); err != nil {
-					err = fmt.Errorf("astiav_test: refing frame failed: %w", err)
-					return
-				}
-				err = nil
-				break
-			}
-			err = fmt.Errorf("astiav_test: reading frame failed: %w", err)
-			return
-		}
-
-		pkts = append(pkts, pkt2)
-
-		for _, pkt := range pkts {
-			if pkt.StreamIndex() != cs.Index() {
-				continue
-			}
-
-			if err = cc.SendPacket(pkt); err != nil {
-				err = fmt.Errorf("astiav_test: sending packet failed: %w", err)
-				return
-			}
-
-			for {
-				if err = cc.ReceiveFrame(f); err != nil {
-					if errors.Is(err, astiav.ErrEof) || errors.Is(err, astiav.ErrEagain) {
-						err = nil
-						break
-					}
-					err = fmt.Errorf("astiav_test: receiving frame failed: %w", err)
-					return
-				}
-
-				if err = lastFrame.Ref(f); err != nil {
-					err = fmt.Errorf("astiav_test: refing frame failed: %w", err)
-					return
-				}
-			}
-		}
-
-		pkts = []*astiav.Packet{}
-	}
-	return
-}
-
 func TestFrame(t *testing.T) {
-	f1, err := videoInputLastVideoFrame()
+	f1, err := globalHelper.inputLastFrame("video.mp4", astiav.MediaTypeVideo)
 	require.NoError(t, err)
-	_, err = os.ReadFile("testdata/frame")
-	require.NoError(t, err)
-	// TODO Fix in Github action
-	//require.Equal(t, string(b), fmt.Sprintf("%+v", f1.Data()))
 	require.Equal(t, [8]int{384, 192, 192, 0, 0, 0, 0, 0}, f1.Linesize())
 	require.Equal(t, int64(60928), f1.PktDts())
 
@@ -216,7 +95,16 @@ func TestFrame(t *testing.T) {
 	f6.SetHeight(2)
 	f6.SetPixelFormat(astiav.PixelFormatYuv420P)
 	f6.SetWidth(4)
-	require.NoError(t, f6.AllocBuffer(1))
-	require.NoError(t, f6.AllocImage(1))
+	const align = 1
+	require.NoError(t, f6.AllocBuffer(align))
+	require.NoError(t, f6.AllocImage(align))
 	require.NoError(t, f6.ImageFillBlack())
+	n, err := f6.ImageBufferSize(align)
+	require.NoError(t, err)
+	require.Equal(t, 12, n)
+	b := make([]byte, n)
+	n, err = f6.ImageCopyToBuffer(b, align)
+	require.NoError(t, err)
+	require.Equal(t, 12, n)
+	require.Equal(t, []byte{0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x80, 0x80, 0x80, 0x80}, b)
 }

packet_test.go

@@ -1,43 +1,14 @@
 package astiav_test
 
 import (
-	"errors"
-	"fmt"
 	"testing"
 
 	"github.com/asticode/go-astiav"
 	"github.com/stretchr/testify/require"
 )
 
-func videoInputFirstPacket() (pkt *astiav.Packet, err error) {
-	if global.pkt != nil {
-		return global.pkt, nil
-	}
-
-	var fc *astiav.FormatContext
-	if fc, err = videoInputFormatContext(); err != nil {
-		err = fmt.Errorf("astiav_test: getting input format context failed")
-		return
-	}
-
-	pkt = astiav.AllocPacket()
-	if pkt == nil {
-		err = errors.New("astiav_test: pkt is nil")
-		return
-	}
-	global.closer.Add(pkt.Free)
-
-	if err = fc.ReadFrame(pkt); err != nil {
-		err = fmt.Errorf("astiav_test: reading frame failed: %w", err)
-		return
-	}
-
-	global.pkt = pkt
-	return
-}
-
 func TestPacket(t *testing.T) {
-	pkt1, err := videoInputFirstPacket()
+	pkt1, err := globalHelper.inputFirstPacket("video.mp4")
 	require.NoError(t, err)
 	require.Equal(t, []byte{0x0, 0x0, 0x0, 0xd1, 0x65, 0x88, 0x82, 0x0, 0x1f, 0x5f, 0xff, 0xf8, 0x22, 0x8a, 0x0, 0x2, 0x2d, 0xbe, 0x38, 0xc7, 0x19, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x39, 0x3a, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xba, 0xeb, 0xae, 0xb9, 0xb8, 0xe6, 0x39, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xa5, 0xc0}, pkt1.Data())
 	require.Equal(t, int64(0), pkt1.Dts())

stream_test.go

@@ -1,40 +1,19 @@
 package astiav_test
 
 import (
-	"fmt"
 	"testing"
 
 	"github.com/asticode/go-astiav"
 	"github.com/stretchr/testify/require"
 )
 
-func videoInputStreams() (fc *astiav.FormatContext, s1, s2 *astiav.Stream, err error) {
-	if global.inputFormatContext != nil && global.inputStream1 != nil && global.inputStream2 != nil {
-		return global.inputFormatContext, global.inputStream1, global.inputStream2, nil
-	}
-
-	if fc, err = videoInputFormatContext(); err != nil {
-		err = fmt.Errorf("astiav_test: getting video input format context failed: %w", err)
-		return
-	}
-
-	ss := fc.Streams()
-	if len(ss) < 2 {
-		err = fmt.Errorf("astiav_test: invalid streams len: %d", len(ss))
-		return
-	}
-
-	s1 = ss[0]
-	s2 = ss[1]
-
-	global.inputStream1 = s1
-	global.inputStream2 = s2
-	return
-}
-
 func TestStream(t *testing.T) {
-	_, s1, s2, err := videoInputStreams()
+	fc, err := globalHelper.inputFormatContext("video.mp4")
 	require.NoError(t, err)
+	ss := fc.Streams()
+	require.Len(t, ss, 2)
+	s1 := ss[0]
+	s2 := ss[1]
 
 	require.Equal(t, 0, s1.Index())
 	require.Equal(t, astiav.NewRational(24, 1), s1.AvgFrameRate())