Add a test file and simple test for AVIF

testsuite/heif/ref/out-libheif1.9-avif.txt

@@ -0,0 +1,45 @@
+Reading ref/IMG_7702_small.heic
+ref/IMG_7702_small.heic :  512 x  300, 3 channel, uint8 heif
+    SHA-1: 337C2EC7F5C2316F2FD31F04067BDC59AB7027AE
+    channel list: R, G, B
+    DateTime: "2019:01:21 16:10:54"
+    ExposureTime: 0.030303
+    FNumber: 1.8
+    Make: "Apple"
+    Model: "iPhone 7"
+    ResolutionUnit: 2 (inches)
+    Software: "12.1.2"
+    XResolution: 72
+    YResolution: 72
+    Exif:ApertureValue: 1.69599 (f/1.8)
+    Exif:BrightnessValue: 3.99501
+    Exif:ColorSpace: 65535
+    Exif:DateTimeDigitized: "2019:01:21 16:10:54"
+    Exif:DateTimeOriginal: "2019:01:21 16:10:54"
+    Exif:ExifVersion: "0221"
+    Exif:ExposureBiasValue: 0
+    Exif:ExposureMode: 0 (auto)
+    Exif:ExposureProgram: 2 (normal program)
+    Exif:Flash: 24 (no flash, auto flash)
+    Exif:FlashPixVersion: "0100"
+    Exif:FocalLength: 3.99 (3.99 mm)
+    Exif:FocalLengthIn35mmFilm: 28
+    Exif:LensMake: "Apple"
+    Exif:LensModel: "iPhone 7 back camera 3.99mm f/1.8"
+    Exif:LensSpecification: 3.99, 3.99, 1.8, 1.8
+    Exif:MeteringMode: 5 (pattern)
+    Exif:PhotographicSensitivity: 20
+    Exif:PixelXDimension: 4032
+    Exif:PixelYDimension: 3024
+    Exif:SceneCaptureType: 0 (standard)
+    Exif:SensingMethod: 2 (1-chip color area)
+    Exif:ShutterSpeedValue: 5.03599 (1/32 s)
+    Exif:SubsecTimeDigitized: "006"
+    Exif:SubsecTimeOriginal: "006"
+    Exif:WhiteBalance: 0 (auto)
+    oiio:ColorSpace: "sRGB"
+Reading ref/Chimera-AV1-8bit-162.avif
+ref/Chimera-AV1-8bit-162.avif :  480 x  270, 3 channel, uint8 heif
+    SHA-1: F8FDAF1BD56A21E3AF99CF8EE7FA45434D2826C7
+    channel list: R, G, B
+    oiio:ColorSpace: "sRGB"

testsuite/heif/run.py

@@ -1,6 +1,9 @@
 #!/usr/bin/env python
 
 imagedir = "ref/"
-files = [ "IMG_7702_small.heic" ]
+files = [ "IMG_7702_small.heic", "Chimera-AV1-8bit-162.avif" ]
 for f in files:
     command = command + info_command (os.path.join(imagedir, f))
+
+# AVIF file is expected to fail with libheif without AV1 decoder
+failureok = 1