Added devcontainer

Author: asticode

.devcontainer/Dockerfile

@@ -0,0 +1,50 @@
+FROM debian:latest
+
+RUN apt-get update
+
+##
+# git
+##
+
+RUN apt-get install -y git nano
+
+##
+# ffmpeg
+##
+
+ARG FFMPEG_VERSION
+                
+RUN apt-get install -y \
+    build-essential \
+    nasm \
+    pkg-config \
+    libx264-dev \
+    libpng-dev
+
+RUN mkdir -p /opt/ffmpeg \
+    && git clone https://github.com/FFmpeg/FFmpeg /opt/ffmpeg/src \
+    && cd /opt/ffmpeg/src \
+    && git checkout ${FFMPEG_VERSION}
+
+RUN cd /opt/ffmpeg/src \
+    && ./configure --prefix=.. --enable-libx264 --enable-gpl \
+    && make \
+    && make install
+
+##
+# go
+##
+
+ARG GO_VERSION
+
+RUN apt-get install -y wget
+RUN <<_EOF_ sh
+arch=$(dpkg --print-architecture)
+goArch="amd64"
+case \${arch} in
+    arm64) goArch="arm64" ;;
+esac
+wget -O /tmp/go.tar.gz https://dl.google.com/go/go${GO_VERSION}.linux-\${goArch}.tar.gz
+tar -C /opt -xzf /tmp/go.tar.gz
+_EOF_
+ENV PATH="$PATH:/opt/go/bin"

.devcontainer/devcontainer.json

@@ -0,0 +1,29 @@
+{
+	"build": {
+		"args": {
+			"FFMPEG_VERSION": "n7.0",
+			"GO_VERSION": "1.25.3"
+		},
+		"dockerfile": "Dockerfile"
+	},
+	"containerEnv": {
+		"CGO_LDFLAGS": "-L/opt/ffmpeg/lib/",
+		"CGO_CFLAGS": "-I/opt/ffmpeg/include/",
+		"PKG_CONFIG_PATH": "/opt/ffmpeg/lib/pkgconfig"
+	},
+	"customizations": {
+		"vscode": {
+			"extensions": [
+				"ms-vscode.cpptools-extension-pack",
+				"golang.go"
+			],
+			"settings": {
+				"remote.autoForwardPorts": false
+			}
+		}
+	},
+	"mounts": [
+		"source=${localEnv:HOME}${localEnv:USERPROFILE}/.ssh,target=/root/.ssh,readonly,type=bind"
+	],
+	"name": "asticode/go-astiav"
+}

.github/workflows/Makefile

@@ -0,0 +1,15 @@
+version=
+srcPath=
+patchPath=
+
+i:
+	rm -rf $(srcPath)
+	mkdir -p $(srcPath)
+	cd $(srcPath) && git clone https://github.com/FFmpeg/FFmpeg .
+	cd $(srcPath) && git checkout $(version)
+ifneq "" "$(patchPath)"
+	cd $(srcPath) && git apply $(patchPath)
+endif
+	cd $(srcPath) && ./configure --prefix=.. $(configure)
+	cd $(srcPath) && make
+	cd $(srcPath) && make install

.github/workflows/test.yml

@@ -69,7 +69,8 @@ jobs:
     - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' }}
       name: Install ffmpeg
       run: |
-        make install-ffmpeg srcPath=${{ env.FFMPEG_PATH }}/src version=${{ env.FFMPEG_VERSION }} patchPath=${{ env.FFMPEG_PATCH_PATH }}
+        cd .github/workflows
+        make srcPath=${{ env.FFMPEG_PATH }}/src version=${{ env.FFMPEG_VERSION }} patchPath=${{ env.FFMPEG_PATCH_PATH }}
 
     - if: ${{ steps.load-ffmpeg-cache.outputs.cache-hit != 'true' }}
       name: Save ffmpeg cache

.gitignore

@@ -1,3 +1,3 @@
-.DS_STORE
+.DS_Store
 coverage.out
 .idea

.vscode/.gitignore

@@ -0,0 +1 @@
+settings.json

.vscode/c_cpp_properties.json

@@ -0,0 +1,11 @@
+{
+    "configurations": [
+        {
+            "includePath": [
+                "${workspaceFolder}/**",
+                "/opt/ffmpeg/include"
+            ]
+        }
+    ],
+    "version": 4
+}

Makefile

@@ -77,22 +77,16 @@ for {
 
 # Install ffmpeg from source
 
-If you don't know how to install `ffmpeg`, you can use the following to install it from source:
+Check out the `ffmpeg` section in the [Devcontainer Dockerfile](.devcontainer/Dockerfile) to see how to install ffmpeg from source.
 
-```sh
-$ make install-ffmpeg
-```
-
-`ffmpeg` will be built from source in a directory named `tmp` and located in you working directory
-
-For your GO code to pick up `ffmpeg` dependency automatically, you'll need to add the following environment variables:
+For your GO code to pick up `ffmpeg` dependency automatically, you'll need to update the following environment variables :
 
-(don't forget to replace `{{ path to your working directory }}` with the absolute path to your working directory)
+(don't forget to replace `{{ path to your ffmpeg directory }}` with the absolute path to your ffmpeg directory)
 
 ```sh
-export CGO_LDFLAGS="-L{{ path to your working directory }}/tmp/n7.0/lib/",
-export CGO_CFLAGS="-I{{ path to your working directory }}/tmp/n7.0/include/",
-export PKG_CONFIG_PATH="{{ path to your working directory }}/tmp/n7.0/lib/pkgconfig",
+export CGO_CFLAGS="-I{{ path to your ffmpeg directory }}/include/",
+export CGO_LDFLAGS="-L{{ path to your ffmpeg directory }}/lib/",
+export PKG_CONFIG_PATH="{{ path to your ffmpeg directory }}/lib/pkgconfig",
 ```
 
 ## Building on Windows

README.md

@@ -153,7 +153,7 @@ func (h *helper) inputLastFrame(name string, mediaType MediaType, ifmt *InputFor
 
 		c := FindDecoder(v.CodecParameters().CodecID())
 		if c == nil {
-			return nil, errors.New("astiav_test: no codec")
+			return nil, fmt.Errorf("astiav_test: no decoder found for %s", v.CodecParameters().CodecID())
 		}
 
 		s.cc = AllocCodecContext(c)