+libavif (#470)

* +libavif

Closes #210

* wip

projects/aomedia.googlesource.com/aom/package.yml

@@ -18,15 +18,16 @@ build:
     make
     make install
   env:
-    CC: clang
     ARGS:
       - -DCMAKE_BUILD_TYPE=Release
       - -DCMAKE_INSTALL_PREFIX="{{prefix}}"
-
-test:
-  script: |
-    aomenc --help
-    aomdec --help
+    linux:
+      CFLAGS: -fPIC
+      CXXFLAGS: -fPIC
+      LDFLAGS: -pie
+test: |
+  aomenc --help
+  aomdec --help
 
 provides:
   - bin/aomenc

projects/github.com/AOMediaCodec/libavif/example.c

@@ -0,0 +1,58 @@
+#include "avif/avif.h"
+#include <inttypes.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char * argv[])
+{
+    if (argc != 2) {
+        fprintf(stderr, "avif_example_decode_file [filename.avif]\n");
+        return 1;
+    }
+    const char * inputFilename = argv[1];
+
+    int returnCode = 1;
+    avifRGBImage rgb;
+    memset(&rgb, 0, sizeof(rgb));
+
+    avifDecoder * decoder = avifDecoderCreate();
+
+    avifResult result = avifDecoderSetIOFile(decoder, inputFilename);
+    if (result != AVIF_RESULT_OK) {
+        fprintf(stderr, "Cannot open file for read: %s\n", inputFilename);
+        goto cleanup;
+    }
+
+    result = avifDecoderParse(decoder);
+    if (result != AVIF_RESULT_OK) {
+        fprintf(stderr, "Failed to decode image: %s\n", avifResultToString(result));
+        goto cleanup;
+    }
+
+    printf("Parsed AVIF: %ux%u (%ubpc)\n", decoder->image->width, decoder->image->height, decoder->image->depth);
+
+    while (avifDecoderNextImage(decoder) == AVIF_RESULT_OK) {
+        avifRGBImageSetDefaults(&rgb, decoder->image);
+
+        avifRGBImageAllocatePixels(&rgb);
+
+        if (avifImageYUVToRGB(decoder->image, &rgb) != AVIF_RESULT_OK) {
+            fprintf(stderr, "Conversion from YUV failed: %s\n", inputFilename);
+            goto cleanup;
+        }
+
+        if (rgb.depth > 8) {
+            uint16_t * firstPixel = (uint16_t *)rgb.pixels;
+            printf(" * First pixel: RGBA(%u,%u,%u,%u)\n", firstPixel[0], firstPixel[1], firstPixel[2], firstPixel[3]);
+        } else {
+            uint8_t * firstPixel = rgb.pixels;
+            printf(" * First pixel: RGBA(%u,%u,%u,%u)\n", firstPixel[0], firstPixel[1], firstPixel[2], firstPixel[3]);
+        }
+    }
+
+    returnCode = 0;
+cleanup:
+    avifRGBImageFreePixels(&rgb);
+    avifDecoderDestroy(decoder);
+    return returnCode;
+}

projects/github.com/AOMediaCodec/libavif/package.yml

@@ -0,0 +1,43 @@
+distributable:
+   url: https://github.com/AOMediaCodec/libavif/archive/refs/tags/v{{version}}.tar.gz
+   strip-components: 1
+
+versions:
+  github: AOMediaCodec/libavif
+
+dependencies:
+  aomedia.googlesource.com/aom: ^3
+  libpng.org: ^1
+  libjpeg-turbo.org: ^2
+
+build:
+  dependencies:
+    tea.xyz/gx/cc: c99
+    tea.xyz/gx/make: '*'
+    cmake.org: ^3
+  working-directory: build
+  script: |
+    cmake .. $ARGS
+    make --jobs {{ hw.concurrency }} install
+  env:
+    ARGS:
+      - -DCMAKE_INSTALL_PREFIX={{prefix}}
+      - -DCMAKE_BUILD_TYPE=Release
+      - -DAVIF_CODEC_AOM=ON
+      - -DAVIF_BUILD_APPS=ON
+      - -DAVIF_BUILD_EXAMPLES=OFF
+      - -DAVIF_BUILD_TESTS=OFF
+
+provides:
+  - bin/avifenc
+  - bin/avifdec
+
+test: |
+  avifenc fixture.png test.avif
+  test -f test.avif
+
+  avifdec test.avif test.jpg
+  test -f test.jpg
+
+  cc example.c -lavif
+  ./a.out test.avif