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build.rs
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extern crate bindgen;
extern crate cc;
extern crate num_cpus;
extern crate pkg_config;
use std::env;
use std::fmt::Write as FmtWrite;
use std::fs::{self, File};
use std::io::{self, BufRead, BufReader, Write};
use std::path::{Path, PathBuf};
use std::process::Command;
use std::str;
use bindgen::callbacks::{
EnumVariantCustomBehavior, EnumVariantValue, IntKind, MacroParsingBehavior, ParseCallbacks,
};
#[derive(Debug)]
struct Library {
name: &'static str,
is_feature: bool,
}
impl Library {
fn feature_name(&self) -> Option<String> {
if self.is_feature {
Some("CARGO_FEATURE_".to_string() + &self.name.to_uppercase())
} else {
None
}
}
}
static LIBRARIES: &[Library] = &[
Library {
name: "avcodec",
is_feature: true,
},
Library {
name: "avdevice",
is_feature: true,
},
Library {
name: "avfilter",
is_feature: true,
},
Library {
name: "avformat",
is_feature: true,
},
Library {
name: "avresample",
is_feature: true,
},
Library {
name: "avutil",
is_feature: false,
},
Library {
name: "postproc",
is_feature: true,
},
Library {
name: "swresample",
is_feature: true,
},
Library {
name: "swscale",
is_feature: true,
},
];
#[derive(Debug)]
struct Callbacks;
impl ParseCallbacks for Callbacks {
fn int_macro(&self, _name: &str, value: i64) -> Option<IntKind> {
let ch_layout_prefix = "AV_CH_";
let codec_cap_prefix = "AV_CODEC_CAP_";
let codec_flag_prefix = "AV_CODEC_FLAG_";
let error_max_size = "AV_ERROR_MAX_STRING_SIZE";
if _name.starts_with(ch_layout_prefix) {
Some(IntKind::ULongLong)
} else if value >= i32::MIN as i64
&& value <= i32::MAX as i64
&& (_name.starts_with(codec_cap_prefix) || _name.starts_with(codec_flag_prefix))
{
Some(IntKind::UInt)
} else if _name == error_max_size {
Some(IntKind::Custom {
name: "usize",
is_signed: false,
})
} else if value >= i32::MIN as i64 && value <= i32::MAX as i64 {
Some(IntKind::Int)
} else {
None
}
}
fn enum_variant_behavior(
&self,
_enum_name: Option<&str>,
original_variant_name: &str,
_variant_value: EnumVariantValue,
) -> Option<EnumVariantCustomBehavior> {
let dummy_codec_id_prefix = "AV_CODEC_ID_FIRST_";
if original_variant_name.starts_with(dummy_codec_id_prefix) {
Some(EnumVariantCustomBehavior::Constify)
} else {
None
}
}
// https://github.com/rust-lang/rust-bindgen/issues/687#issuecomment-388277405
fn will_parse_macro(&self, name: &str) -> MacroParsingBehavior {
use MacroParsingBehavior::*;
match name {
"FP_INFINITE" => Ignore,
"FP_NAN" => Ignore,
"FP_NORMAL" => Ignore,
"FP_SUBNORMAL" => Ignore,
"FP_ZERO" => Ignore,
_ => Default,
}
}
}
fn version() -> String {
let major: u8 = env::var("CARGO_PKG_VERSION_MAJOR")
.unwrap()
.parse()
.unwrap();
let minor: u8 = env::var("CARGO_PKG_VERSION_MINOR")
.unwrap()
.parse()
.unwrap();
format!("{}.{}", major, minor)
}
fn output() -> PathBuf {
PathBuf::from(env::var("OUT_DIR").unwrap())
}
fn source() -> PathBuf {
output().join(format!("ffmpeg-{}", version()))
}
fn search() -> PathBuf {
let mut absolute = env::current_dir().unwrap();
absolute.push(output());
absolute.push("dist");
absolute
}
fn fetch() -> io::Result<()> {
let output_base_path = output();
let clone_dest_dir = format!("ffmpeg-{}", version());
let _ = std::fs::remove_dir_all(output_base_path.join(&clone_dest_dir));
let status = Command::new("git")
.current_dir(&output_base_path)
.arg("clone")
.arg("--depth=1")
.arg("-b")
.arg(format!("release/{}", version()))
.arg("https://github.com/FFmpeg/FFmpeg")
.arg(&clone_dest_dir)
.status()?;
if status.success() {
Ok(())
} else {
Err(io::Error::new(io::ErrorKind::Other, "fetch failed"))
}
}
fn switch(configure: &mut Command, feature: &str, name: &str) {
let arg = if env::var("CARGO_FEATURE_".to_string() + feature).is_ok() {
"--enable-"
} else {
"--disable-"
};
configure.arg(arg.to_string() + name);
}
fn get_ffmpet_target_os() -> String {
let cargo_target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
match cargo_target_os.as_str() {
"ios" => "darwin".to_string(),
_ => cargo_target_os,
}
}
/// Find the sysroot required for a cross compilation by ffmpeg **and** bindgen
/// @see https://github.com/rust-lang/rust-bindgen/issues/1229
fn find_sysroot() -> Option<String> {
if env::var("CARGO_FEATURE_BUILD").is_err() || env::var("HOST") == env::var("TARGET") {
return None;
}
if let Ok(sysroot) = env::var("SYSROOT") {
return Some(sysroot.to_string());
}
if env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("ios") {
let xcode_output = Command::new("xcrun")
.args(["--sdk", "iphoneos", "--show-sdk-path"])
.output()
.expect("failed to run xcrun");
if !xcode_output.status.success() {
panic!("Failed to run xcrun to get the ios sysroot, please install xcode tools or provide sysroot using $SYSROOT env. Error: {}", String::from_utf8_lossy(&xcode_output.stderr));
}
let string = String::from_utf8(xcode_output.stdout)
.expect("Failed to parse xcrun output")
.replace("\n", "");
if !Path::new(&string).exists() {
panic!("xcrun returned invalid sysroot path: {}", string);
}
return Some(string);
}
println!("cargo:warnning=Detected cross compilation but sysroot not provided");
None
}
fn build(sysroot: Option<&str>) -> io::Result<()> {
let source_dir = source();
// Command's path is not relative to command's current_dir
let configure_path = source_dir.join("configure");
assert!(configure_path.exists());
let mut configure = Command::new(&configure_path);
configure.current_dir(&source_dir);
configure.arg(format!("--prefix={}", search().to_string_lossy()));
let target = env::var("TARGET").unwrap();
let host = env::var("HOST").unwrap();
if target != host {
configure.arg("--enable-cross-compile");
// Rust targets are subtly different than naming scheme for compiler prefixes.
// The cc crate has the messy logic of guessing a working prefix,
// and this is a messy way of reusing that logic.
let cc = cc::Build::new();
// Apple-clang needs this, -arch is not enough.
let target_flag = format!("--target={}", target);
if cc.is_flag_supported(&target_flag).unwrap_or(false) {
configure.arg(format!("--extra-cflags={}", target_flag));
configure.arg(format!("--extra-ldflags={}", target_flag));
}
let compiler = cc.get_compiler();
let compiler = compiler.path().file_stem().unwrap().to_str().unwrap();
if let Some(suffix_pos) = compiler.rfind('-') {
let prefix = compiler[0..suffix_pos].trim_end_matches("-wr"); // "wr-c++" compiler
configure.arg(format!("--cross-prefix={}-", prefix));
}
configure.arg(format!(
"--arch={}",
env::var("CARGO_CFG_TARGET_ARCH").unwrap()
));
configure.arg(format!("--target-os={}", get_ffmpet_target_os()));
}
// for ios it is required to provide sysroot for both configure and bindgen
// for macos the easiest way is to run xcrun, for other platform we support $SYSROOT var
if env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("ios") {
let sysroot = sysroot.expect("The sysroot is required for ios cross compilation, make sure to have available xcode or provide the $SYSROOT env var");
configure.arg(format!("--sysroot={}", sysroot));
let cc = Command::new("xcrun")
.args(["--sdk", "iphoneos", "-f", "clang"])
.output()
.expect("failed to run xcrun")
.stdout;
configure.arg(format!(
"--cc={}",
str::from_utf8(&cc)
.expect("Failed to parse xcrun output")
.trim()
));
}
// control debug build
if env::var("DEBUG").is_ok() {
configure.arg("--enable-debug");
configure.arg("--disable-stripping");
} else {
configure.arg("--disable-debug");
configure.arg("--enable-stripping");
}
// make it static
configure.arg("--enable-static");
configure.arg("--disable-shared");
configure.arg("--enable-pthreads");
configure.arg("--enable-pic");
// stop autodetected libraries enabling themselves, causing linking errors
configure.arg("--disable-autodetect");
// do not build programs since we don't need them
configure.arg("--disable-programs");
macro_rules! enable {
($conf:expr, $feat:expr, $name:expr) => {
if env::var(concat!("CARGO_FEATURE_", $feat)).is_ok() {
$conf.arg(concat!("--enable-", $name));
}
};
}
// macro_rules! disable {
// ($conf:expr, $feat:expr, $name:expr) => (
// if env::var(concat!("CARGO_FEATURE_", $feat)).is_err() {
// $conf.arg(concat!("--disable-", $name));
// }
// )
// }
// the binary using ffmpeg-sys must comply with GPL
switch(&mut configure, "BUILD_LICENSE_GPL", "gpl");
// the binary using ffmpeg-sys must comply with (L)GPLv3
switch(&mut configure, "BUILD_LICENSE_VERSION3", "version3");
// the binary using ffmpeg-sys cannot be redistributed
switch(&mut configure, "BUILD_LICENSE_NONFREE", "nonfree");
let ffmpeg_major_version: u32 = env!("CARGO_PKG_VERSION_MAJOR").parse().unwrap();
// configure building libraries based on features
for lib in LIBRARIES
.iter()
.filter(|lib| lib.is_feature)
.filter(|lib| !(lib.name == "avresample" && ffmpeg_major_version >= 5))
{
switch(&mut configure, &lib.name.to_uppercase(), lib.name);
}
// configure external SSL libraries
enable!(configure, "BUILD_LIB_GNUTLS", "gnutls");
enable!(configure, "BUILD_LIB_OPENSSL", "openssl");
// configure external filters
enable!(configure, "BUILD_LIB_FONTCONFIG", "fontconfig");
enable!(configure, "BUILD_LIB_FREI0R", "frei0r");
enable!(configure, "BUILD_LIB_LADSPA", "ladspa");
enable!(configure, "BUILD_LIB_ASS", "libass");
enable!(configure, "BUILD_LIB_FREETYPE", "libfreetype");
enable!(configure, "BUILD_LIB_FRIBIDI", "libfribidi");
enable!(configure, "BUILD_LIB_OPENCV", "libopencv");
enable!(configure, "BUILD_LIB_VMAF", "libvmaf");
// configure external encoders/decoders
enable!(configure, "BUILD_LIB_AACPLUS", "libaacplus");
enable!(configure, "BUILD_LIB_CELT", "libcelt");
enable!(configure, "BUILD_LIB_DCADEC", "libdcadec");
enable!(configure, "BUILD_LIB_DAV1D", "libdav1d");
enable!(configure, "BUILD_LIB_FAAC", "libfaac");
enable!(configure, "BUILD_LIB_FDK_AAC", "libfdk-aac");
enable!(configure, "BUILD_LIB_GSM", "libgsm");
enable!(configure, "BUILD_LIB_ILBC", "libilbc");
enable!(configure, "BUILD_LIB_VAZAAR", "libvazaar");
enable!(configure, "BUILD_LIB_MP3LAME", "libmp3lame");
enable!(configure, "BUILD_LIB_OPENCORE_AMRNB", "libopencore-amrnb");
enable!(configure, "BUILD_LIB_OPENCORE_AMRWB", "libopencore-amrwb");
enable!(configure, "BUILD_LIB_OPENH264", "libopenh264");
enable!(configure, "BUILD_LIB_OPENH265", "libopenh265");
enable!(configure, "BUILD_LIB_OPENJPEG", "libopenjpeg");
enable!(configure, "BUILD_LIB_OPUS", "libopus");
enable!(configure, "BUILD_LIB_SCHROEDINGER", "libschroedinger");
enable!(configure, "BUILD_LIB_SHINE", "libshine");
enable!(configure, "BUILD_LIB_SNAPPY", "libsnappy");
enable!(configure, "BUILD_LIB_SPEEX", "libspeex");
enable!(
configure,
"BUILD_LIB_STAGEFRIGHT_H264",
"libstagefright-h264"
);
enable!(configure, "BUILD_LIB_THEORA", "libtheora");
enable!(configure, "BUILD_LIB_TWOLAME", "libtwolame");
enable!(configure, "BUILD_LIB_UTVIDEO", "libutvideo");
enable!(configure, "BUILD_LIB_VO_AACENC", "libvo-aacenc");
enable!(configure, "BUILD_LIB_VO_AMRWBENC", "libvo-amrwbenc");
enable!(configure, "BUILD_LIB_VORBIS", "libvorbis");
enable!(configure, "BUILD_LIB_VPX", "libvpx");
enable!(configure, "BUILD_LIB_WAVPACK", "libwavpack");
enable!(configure, "BUILD_LIB_WEBP", "libwebp");
enable!(configure, "BUILD_LIB_X264", "libx264");
enable!(configure, "BUILD_LIB_X265", "libx265");
enable!(configure, "BUILD_LIB_AVS", "libavs");
enable!(configure, "BUILD_LIB_XVID", "libxvid");
if env::var("CARGO_FEATURE_BUILD_VIDEOTOOLBOX").is_ok() {
configure.arg("--enable-videotoolbox");
if target != host && env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("ios") {
configure.arg("--extra-cflags=-mios-version-min=11.0");
}
if target != host && env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("macos") {
configure.arg("--extra-cflags=-mmacosx-version-min=10.11");
}
}
if env::var("CARGO_FEATURE_BUILD_AUDIOTOOLBOX").is_ok() {
configure.arg("--enable-audiotoolbox");
configure.arg("--extra-cflags=-mios-version-min=11.0");
}
// other external libraries
enable!(configure, "BUILD_LIB_DRM", "libdrm");
enable!(configure, "BUILD_NVENC", "nvenc");
// configure external protocols
enable!(configure, "BUILD_LIB_SMBCLIENT", "libsmbclient");
enable!(configure, "BUILD_LIB_SSH", "libssh");
// configure misc build options
enable!(configure, "BUILD_PIC", "pic");
// run ./configure
let output = configure
.output()
.unwrap_or_else(|_| panic!("{:?} failed", configure));
if !output.status.success() {
println!("configure: {}", String::from_utf8_lossy(&output.stdout));
return Err(io::Error::new(
io::ErrorKind::Other,
format!(
"configure failed {}",
String::from_utf8_lossy(&output.stderr)
),
));
}
// run make
if !Command::new("make")
.arg("-j")
.arg(num_cpus::get().to_string())
.current_dir(source())
.status()?
.success()
{
return Err(io::Error::new(io::ErrorKind::Other, "make failed"));
}
// run make install
if !Command::new("make")
.current_dir(source())
.arg("install")
.status()?
.success()
{
return Err(io::Error::new(io::ErrorKind::Other, "make install failed"));
}
Ok(())
}
#[cfg(not(target_env = "msvc"))]
fn try_vcpkg(_statik: bool) -> Option<Vec<PathBuf>> {
None
}
#[cfg(target_env = "msvc")]
fn try_vcpkg(statik: bool) -> Option<Vec<PathBuf>> {
if !statik {
env::set_var("VCPKGRS_DYNAMIC", "1");
}
vcpkg::find_package("ffmpeg")
.map_err(|e| {
println!("Could not find ffmpeg with vcpkg: {}", e);
})
.map(|library| library.include_paths)
.ok()
}
fn check_features(
include_paths: Vec<PathBuf>,
infos: &[(&'static str, Option<&'static str>, &'static str)],
) {
let mut includes_code = String::new();
let mut main_code = String::new();
for &(header, feature, var) in infos {
if let Some(feature) = feature {
if env::var(format!("CARGO_FEATURE_{}", feature.to_uppercase())).is_err() {
continue;
}
}
let include = format!("#include <{}>", header);
if !includes_code.contains(&include) {
includes_code.push_str(&include);
includes_code.push('\n');
}
let _ = write!(
includes_code,
r#"
#ifndef {var}_is_defined
#ifndef {var}
#define {var} 0
#define {var}_is_defined 0
#else
#define {var}_is_defined 1
#endif
#endif
"#,
var = var
);
let _ = write!(
main_code,
r#"printf("[{var}]%d%d\n", {var}, {var}_is_defined);
"#,
var = var
);
}
let version_check_info = [("avcodec", 56, 62, 0, 108)];
for &(lib, begin_version_major, end_version_major, begin_version_minor, end_version_minor) in
version_check_info.iter()
{
for version_major in begin_version_major..end_version_major {
for version_minor in begin_version_minor..end_version_minor {
let _ = write!(
main_code,
r#"printf("[{lib}_version_greater_than_{version_major}_{version_minor}]%d\n", LIB{lib_uppercase}_VERSION_MAJOR > {version_major} || (LIB{lib_uppercase}_VERSION_MAJOR == {version_major} && LIB{lib_uppercase}_VERSION_MINOR > {version_minor}));
"#,
lib = lib,
lib_uppercase = lib.to_uppercase(),
version_major = version_major,
version_minor = version_minor
);
}
}
}
let out_dir = output();
write!(
File::create(out_dir.join("check.c")).expect("Failed to create file"),
r#"
#include <stdio.h>
{includes_code}
int main()
{{
{main_code}
return 0;
}}
"#,
includes_code = includes_code,
main_code = main_code
)
.expect("Write failed");
let executable = out_dir.join(if cfg!(windows) { "check.exe" } else { "check" });
let mut compiler = cc::Build::new()
.target(&env::var("HOST").unwrap()) // don't cross-compile this
.get_compiler()
.to_command();
for dir in include_paths {
compiler.arg("-I");
compiler.arg(dir.to_string_lossy().into_owned());
}
if !compiler
.current_dir(&out_dir)
.arg("-o")
.arg(&executable)
.arg("check.c")
.status()
.expect("Command failed")
.success()
{
panic!("Compile failed");
}
let check_output = Command::new(out_dir.join(&executable))
.current_dir(&out_dir)
.output()
.expect("Check failed");
if !check_output.status.success() {
panic!(
"{} failed: {}\n{}",
executable.display(),
String::from_utf8_lossy(&check_output.stdout),
String::from_utf8_lossy(&check_output.stderr)
);
}
let stdout = str::from_utf8(&check_output.stdout).unwrap();
println!("stdout of {}={}", executable.display(), stdout);
for &(_, feature, var) in infos {
if let Some(feature) = feature {
if env::var(format!("CARGO_FEATURE_{}", feature.to_uppercase())).is_err() {
continue;
}
}
// Here so the features are listed for rust-ffmpeg at build time. Does
// NOT represent activated features, just features that exist (hence the
// lack of "=true" at the end)
println!(r#"cargo:{}="#, var);
let var_str = format!("[{var}]", var = var);
let pos = var_str.len()
+ stdout
.find(&var_str)
.unwrap_or_else(|| panic!("Variable '{}' not found in stdout output", var_str));
if &stdout[pos..pos + 1] == "1" {
println!(r#"cargo:rustc-cfg=feature="{}""#, var.to_lowercase());
println!(r#"cargo:{}=true"#, var.to_lowercase());
}
// Also find out if defined or not (useful for cases where only the definition of a macro
// can be used as distinction)
if &stdout[pos + 1..pos + 2] == "1" {
println!(
r#"cargo:rustc-cfg=feature="{}_is_defined""#,
var.to_lowercase()
);
println!(r#"cargo:{}_is_defined=true"#, var.to_lowercase());
}
}
for &(lib, begin_version_major, end_version_major, begin_version_minor, end_version_minor) in
version_check_info.iter()
{
for version_major in begin_version_major..end_version_major {
for version_minor in begin_version_minor..end_version_minor {
let search_str = format!(
"[{lib}_version_greater_than_{version_major}_{version_minor}]",
version_major = version_major,
version_minor = version_minor,
lib = lib
);
let pos = stdout
.find(&search_str)
.expect("Variable not found in output")
+ search_str.len();
if &stdout[pos..pos + 1] == "1" {
println!(
r#"cargo:rustc-cfg=feature="{}""#,
&search_str[1..(search_str.len() - 1)]
);
println!(r#"cargo:{}=true"#, &search_str[1..(search_str.len() - 1)]);
}
}
}
}
let ffmpeg_lavc_versions = [
("ffmpeg_3_0", 57, 24),
("ffmpeg_3_1", 57, 48),
("ffmpeg_3_2", 57, 64),
("ffmpeg_3_3", 57, 89),
("ffmpeg_3_1", 57, 107),
("ffmpeg_4_0", 58, 18),
("ffmpeg_4_1", 58, 35),
("ffmpeg_4_2", 58, 54),
("ffmpeg_4_3", 58, 91),
("ffmpeg_4_4", 58, 100),
("ffmpeg_5_0", 59, 18),
("ffmpeg_5_1", 59, 37),
("ffmpeg_6_0", 60, 3),
("ffmpeg_6_1", 60, 31),
("ffmpeg_7_0", 61, 3),
("ffmpeg_7_1", 61, 19),
];
for &(ffmpeg_version_flag, lavc_version_major, lavc_version_minor) in
ffmpeg_lavc_versions.iter()
{
let search_str = format!(
"[avcodec_version_greater_than_{lavc_version_major}_{lavc_version_minor}]",
lavc_version_major = lavc_version_major,
lavc_version_minor = lavc_version_minor - 1
);
let pos = stdout
.find(&search_str)
.expect("Variable not found in output")
+ search_str.len();
if &stdout[pos..pos + 1] == "1" {
println!(r#"cargo:rustc-cfg=feature="{}""#, ffmpeg_version_flag);
println!(r#"cargo:{}=true"#, ffmpeg_version_flag);
} else {
println!(r#"cargo:{}="#, ffmpeg_version_flag);
}
}
}
fn search_include(include_paths: &[PathBuf], header: &str) -> String {
for dir in include_paths {
let include = dir.join(header);
if fs::metadata(&include).is_ok() {
return include.as_path().to_str().unwrap().to_string();
}
}
format!("/usr/include/{}", header)
}
fn maybe_search_include(include_paths: &[PathBuf], header: &str) -> Option<String> {
let path = search_include(include_paths, header);
if fs::metadata(&path).is_ok() {
Some(path)
} else {
None
}
}
fn link_to_libraries(statik: bool) {
let ffmpeg_ty = if statik { "static" } else { "dylib" };
for lib in LIBRARIES {
let feat_is_enabled = lib.feature_name().and_then(|f| env::var(f).ok()).is_some();
if !lib.is_feature || feat_is_enabled {
println!("cargo:rustc-link-lib={}={}", ffmpeg_ty, lib.name);
}
}
if env::var("CARGO_FEATURE_BUILD_ZLIB").is_ok() && cfg!(target_os = "linux") {
println!("cargo:rustc-link-lib=z");
}
}
fn main() {
let statik = env::var("CARGO_FEATURE_STATIC").is_ok();
let ffmpeg_major_version: u32 = env!("CARGO_PKG_VERSION_MAJOR").parse().unwrap();
let sysroot = find_sysroot();
let include_paths: Vec<PathBuf> = if env::var("CARGO_FEATURE_BUILD").is_ok() {
println!(
"cargo:rustc-link-search=native={}",
search().join("lib").to_string_lossy()
);
link_to_libraries(statik);
if fs::metadata(search().join("lib").join("libavutil.a")).is_err() {
fs::create_dir_all(output()).expect("failed to create build directory");
fetch().unwrap();
build(sysroot.as_deref()).unwrap();
}
// Check additional required libraries.
{
let config_mak = source().join("ffbuild/config.mak");
let file = File::open(config_mak).unwrap();
let reader = BufReader::new(file);
let extra_linker_args = reader
.lines()
.filter_map(|line| {
let line = line.as_ref().ok()?;
if line.starts_with("EXTRALIBS") {
Some(
line.split('=')
.next_back()
.unwrap()
.split(' ')
.map(|s| s.to_string())
.collect::<Vec<_>>(),
)
} else {
None
}
})
.flatten()
.collect::<Vec<_>>();
extra_linker_args
.iter()
.filter(|flag| flag.starts_with("-l"))
.map(|lib| &lib[2..])
.for_each(|lib| println!("cargo:rustc-link-lib={}", lib));
extra_linker_args
.iter()
.filter(|v| v.starts_with("-L"))
.map(|flag| {
let path = &flag[2..];
if path.starts_with('/') {
PathBuf::from(path)
} else {
source().join(path)
}
})
.for_each(|lib_search_path| {
println!(
"cargo:rustc-link-search=native={}",
lib_search_path.to_str().unwrap()
);
})
}
vec![search().join("include")]
}
// Use prebuilt library
else if let Ok(ffmpeg_dir) = env::var("FFMPEG_DIR") {
let ffmpeg_dir = PathBuf::from(ffmpeg_dir);
if ffmpeg_dir.join("lib/amd64").exists()
&& env::var("CARGO_CFG_TARGET_ARCH").as_deref() == Ok("x86_64")
{
println!(
"cargo:rustc-link-search=native={}",
ffmpeg_dir.join("lib/amd64").to_string_lossy()
);
} else if ffmpeg_dir.join("lib/armhf").exists()
&& env::var("CARGO_CFG_TARGET_ARCH").as_deref() == Ok("arm")
{
println!(
"cargo:rustc-link-search=native={}",
ffmpeg_dir.join("lib/armhf").to_string_lossy()
);
} else if ffmpeg_dir.join("lib/arm64").exists()
&& env::var("CARGO_CFG_TARGET_ARCH").as_deref() == Ok("aarch64")
{
println!(
"cargo:rustc-link-search=native={}",
ffmpeg_dir.join("lib/arm64").to_string_lossy()
);
} else {
println!(
"cargo:rustc-link-search=native={}",
ffmpeg_dir.join("lib").to_string_lossy()
);
}
link_to_libraries(statik);
vec![ffmpeg_dir.join("include")]
} else if let Some(paths) = try_vcpkg(statik) {
// vcpkg doesn't detect the "system" dependencies
if statik {
if cfg!(feature = "avcodec") || cfg!(feature = "avdevice") {
println!("cargo:rustc-link-lib=ole32");
}
if cfg!(feature = "avformat") {
println!("cargo:rustc-link-lib=secur32");
println!("cargo:rustc-link-lib=ws2_32");
}
// avutil depdendencies
println!("cargo:rustc-link-lib=bcrypt");
println!("cargo:rustc-link-lib=user32");
}
paths
}
// Fallback to pkg-config
else {
pkg_config::Config::new()
.statik(statik)
.probe("libavutil")
.unwrap();
let mut libs = vec![
("libavformat", "AVFORMAT"),
("libavfilter", "AVFILTER"),
("libavdevice", "AVDEVICE"),
("libswscale", "SWSCALE"),
("libswresample", "SWRESAMPLE"),
];
if ffmpeg_major_version < 5 {
libs.push(("libavresample", "AVRESAMPLE"));
}
for (lib_name, env_variable_name) in libs.iter() {
if env::var(format!("CARGO_FEATURE_{}", env_variable_name)).is_ok() {
pkg_config::Config::new()
.statik(statik)
.probe(lib_name)
.unwrap();
}
}
pkg_config::Config::new()
.statik(statik)
.probe("libavcodec")
.unwrap()
.include_paths
};
if statik && cfg!(target_os = "macos") {
let frameworks = vec![
"AppKit",
"AudioToolbox",
"AVFoundation",
"CoreFoundation",
"CoreGraphics",
"CoreMedia",
"CoreServices",
"CoreVideo",
"Foundation",
"OpenCL",
"OpenGL",
"QTKit",
"QuartzCore",
"Security",
"VideoDecodeAcceleration",
"VideoToolbox",
];
for f in frameworks {
println!("cargo:rustc-link-lib=framework={}", f);
}
}
check_features(
include_paths.clone(),
&[
("libavutil/avutil.h", None, "FF_API_OLD_AVOPTIONS"),
("libavutil/avutil.h", None, "FF_API_PIX_FMT"),
("libavutil/avutil.h", None, "FF_API_CONTEXT_SIZE"),
("libavutil/avutil.h", None, "FF_API_PIX_FMT_DESC"),
("libavutil/avutil.h", None, "FF_API_AV_REVERSE"),
("libavutil/avutil.h", None, "FF_API_AUDIOCONVERT"),
("libavutil/avutil.h", None, "FF_API_CPU_FLAG_MMX2"),
("libavutil/avutil.h", None, "FF_API_LLS_PRIVATE"),
("libavutil/avutil.h", None, "FF_API_AVFRAME_LAVC"),
("libavutil/avutil.h", None, "FF_API_VDPAU"),
(
"libavutil/avutil.h",
None,
"FF_API_GET_CHANNEL_LAYOUT_COMPAT",
),
("libavutil/avutil.h", None, "FF_API_XVMC"),
("libavutil/avutil.h", None, "FF_API_OPT_TYPE_METADATA"),
("libavutil/avutil.h", None, "FF_API_DLOG"),
("libavutil/avutil.h", None, "FF_API_HMAC"),
("libavutil/avutil.h", None, "FF_API_VAAPI"),
("libavutil/avutil.h", None, "FF_API_PKT_PTS"),
("libavutil/avutil.h", None, "FF_API_ERROR_FRAME"),
("libavutil/avutil.h", None, "FF_API_FRAME_QP"),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_VIMA_DECODER",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_REQUEST_CHANNELS",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_OLD_DECODE_AUDIO",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_OLD_ENCODE_AUDIO",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_OLD_ENCODE_VIDEO",
),
("libavcodec/avcodec.h", Some("avcodec"), "FF_API_CODEC_ID"),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_AUDIO_CONVERT",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_AVCODEC_RESAMPLE",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_DEINTERLACE",
),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_DESTRUCT_PACKET",
),
("libavcodec/avcodec.h", Some("avcodec"), "FF_API_GET_BUFFER"),
(
"libavcodec/avcodec.h",
Some("avcodec"),
"FF_API_MISSING_SAMPLE",
),
("libavcodec/avcodec.h", Some("avcodec"), "FF_API_LOWRES"),