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refactor(pf-encode): move the AMF C-ABI mirror to its own file (WP7.4)

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The ~410-line hand-mirrored AMF vtable ABI was already isolated in an
inline `mod sys` — the remaining value of the audit's 'best split in
the crate' is the FILE boundary: amf.rs drops 3379 → 2965 lines and the
pure unsafe-FFI surface (25 unsafe fns, zero policy) is reviewable in
isolation, which is the crate's stated review goal.

Pure move: `#[path = "amf_sys.rs"] mod sys;` keeps the module name and
every `sys::` call site byte-identical; the module was self-contained
(only `use std::ffi::c_void`, no super:: references). The banner became
the file's module docs; contents de-indented one level — rustfmt-clean
on the first check, which is what proves the move byte-exact.

Gated on .173: all five clippy combos + the amf-qsv,qsv test leg (38
passed — the live AMF matrix on real VCN silicon among them).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
enricobuehler
2026-07-26 00:08:03 +02:00
co-authored by Claude Opus 5
parent 9491cc8759
commit cb69cd3b8c
2 changed files with 419 additions and 419 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crates/pf-encode/src/enc/windows/amf.rs
+5 -419
View File
@@ -66,425 +66,11 @@ use windows::Win32::Storage::FileSystem::{
};
use windows::Win32::System::LibraryLoader::GetModuleFileNameW;
// ---------------------------------------------------------------------------------------------
// Mirrored AMF C ABI (written against GPUOpen header release v1.4.36 — amf/public/include; every
// slot below is a base-interface slot whose layout is stable since <= v1.4.34, the loader's
// accepted ABI floor, so the mirror is valid on every runtime the loader admits).
//
// Layout rules this mirror relies on: every AMF interface is a struct whose sole member is a
// pointer to a C vtable; derived interfaces PREPEND their base's slots in order (AMFInterface →
// AMFPropertyStorage → AMFData → AMFBuffer/AMFSurface), so a derived pointer is usable through a
// base vtable mirror. Slots we never call are declared as bare `*const c_void` placeholders —
// same size/alignment as the function pointer they stand in for. `AMF_STD_CALL` is `__stdcall`
// (Rust `extern "system"`); the two DLL entry points are `__cdecl` (`extern "C"`); on x86_64
// both collapse to the one Windows calling convention.
// ---------------------------------------------------------------------------------------------
mod sys {
use std::ffi::c_void;
/// `AMF_RESULT` (core/Result.h) — a plain C enum, sequential from 0. Only the codes this
/// module branches on are named; everything else is reported numerically via [`result_name`].
pub type AmfResult = i32;
pub const AMF_OK: AmfResult = 0;
pub const AMF_EOF: AmfResult = 23;
pub const AMF_REPEAT: AmfResult = 24;
pub const AMF_INPUT_FULL: AmfResult = 25;
pub const AMF_NEED_MORE_INPUT: AmfResult = 44;
/// Human-readable name for an `AMF_RESULT` (diagnostics only — the numeric value rides along
/// so an unnamed code is still identifiable against Result.h).
pub fn result_name(r: AmfResult) -> &'static str {
match r {
0 => "AMF_OK",
1 => "AMF_FAIL",
2 => "AMF_UNEXPECTED",
3 => "AMF_ACCESS_DENIED",
4 => "AMF_INVALID_ARG",
5 => "AMF_OUT_OF_RANGE",
6 => "AMF_OUT_OF_MEMORY",
7 => "AMF_INVALID_POINTER",
8 => "AMF_NO_INTERFACE",
9 => "AMF_NOT_IMPLEMENTED",
10 => "AMF_NOT_SUPPORTED",
11 => "AMF_NOT_FOUND",
12 => "AMF_ALREADY_INITIALIZED",
13 => "AMF_NOT_INITIALIZED",
14 => "AMF_INVALID_FORMAT",
15 => "AMF_WRONG_STATE",
17 => "AMF_NO_DEVICE",
18 => "AMF_DIRECTX_FAILED",
23 => "AMF_EOF",
24 => "AMF_REPEAT",
25 => "AMF_INPUT_FULL",
26 => "AMF_RESOLUTION_CHANGED",
28 => "AMF_INVALID_DATA_TYPE",
29 => "AMF_INVALID_RESOLUTION",
30 => "AMF_CODEC_NOT_SUPPORTED",
31 => "AMF_SURFACE_FORMAT_NOT_SUPPORTED",
32 => "AMF_SURFACE_MUST_BE_SHARED",
36 => "AMF_ENCODER_NOT_PRESENT",
44 => "AMF_NEED_MORE_INPUT",
_ => "AMF_<unnamed>",
}
}
/// The AMF header release this FFI mirror was written against: `AMF_FULL_VERSION` for 1.4.36.0
/// (core/Version.h `AMF_MAKE_FULL_VERSION`). This is the version claimed to `AMFInit` — but
/// capped at the runtime's own reported version (see `load_factory`), so an older-but-accepted
/// runtime is asked only for the ABI it actually provides.
pub const AMF_HEADER_VERSION: u64 = (1u64 << 48) | (4u64 << 32) | (36u64 << 16);
/// The oldest AMF runtime the loader accepts (`AMF_FULL_VERSION` 1.4.34.0 — AMD Adrenalin
/// 24.6.1). This is an **ABI floor, not a feature floor**: every vtable slot mirrored in this
/// module belongs to a base interface (`AMFFactory`/`AMFContext`/`AMFComponent`/`AMFData`/
/// `AMFBuffer`) whose layout has been stable — append-only, no mid-vtable insertions — since
/// well before 1.4.34, so a 1.4.34 runtime is guaranteed to expose every mirrored slot at its
/// mirrored offset. Everything 1.4.35/1.4.36 added that this path can touch (new HQ presets,
/// AV1 B-frame / picture management) is a *string-keyed encoder property*, applied through
/// [`set_prop`] with `required=false` — a runtime that lacks it rejects the property (logged)
/// and the feature degrades, rather than shifting any vtable offset. Below this floor the
/// mirror is not guaranteed to match, so the loader declines cleanly (an old-driver decline,
/// never UB).
pub const AMF_MIN_VERSION: u64 = (1u64 << 48) | (4u64 << 32) | (34u64 << 16);
/// `AMF_SURFACE_FORMAT` (core/Surface.h).
pub const AMF_SURFACE_NV12: i32 = 1;
pub const AMF_SURFACE_P010: i32 = 10;
/// `AMF_DX_VERSION::AMF_DX11_1` (core/Data.h) — the `InitDX11` version argument.
pub const AMF_DX11_1: i32 = 111;
/// `AMF_MEMORY_TYPE::AMF_MEMORY_HOST` (core/Data.h) — the `AllocBuffer` memory type for the
/// CPU-filled HDR-metadata buffer.
pub const AMF_MEMORY_HOST: i32 = 1;
/// `AMFHDRMetadata` (components/ColorSpace.h) — the payload of the `*InHDRMetadata` encoder
/// property (an `AMFBuffer` holding exactly this struct). Same units as the HEVC ST.2086 SEI
/// and [`punktfunk_core::quic::HdrMeta`]: chromaticities in 1/50000, mastering luminance in
/// 0.0001 cd/m², CLL/FALL in nits. 28 bytes, no padding.
#[repr(C)]
pub struct AmfHdrMetadata {
pub red_primary: [u16; 2],
pub green_primary: [u16; 2],
pub blue_primary: [u16; 2],
pub white_point: [u16; 2],
pub max_mastering_luminance: u32,
pub min_mastering_luminance: u32,
pub max_content_light_level: u16,
pub max_frame_average_light_level: u16,
}
/// `AMFGuid` (core/Platform.h) — data41..data48 flattened into an array (identical layout).
#[repr(C)]
pub struct AmfGuid {
pub data1: u32,
pub data2: u16,
pub data3: u16,
pub data4: [u8; 8],
}
/// `IID_AMFBuffer` (core/Buffer.h `AMF_DECLARE_IID`) — for `QueryInterface` on the encoder's
/// output `AMFData` to reach `GetNative`/`GetSize`.
pub const IID_AMF_BUFFER: AmfGuid = AmfGuid {
data1: 0xb04b_7248,
data2: 0xb6f0,
data3: 0x4321,
data4: [0xb6, 0x91, 0xba, 0xa4, 0x74, 0x0f, 0x9f, 0xcb],
};
// `AMF_VARIANT_TYPE` (core/Variant.h) — the tags this module writes/reads.
pub const AMF_VARIANT_BOOL: i32 = 1;
pub const AMF_VARIANT_INT64: i32 = 2;
pub const AMF_VARIANT_RATE: i32 = 7;
pub const AMF_VARIANT_INTERFACE: i32 = 12;
/// `AMFVariantStruct` (core/Variant.h): a 4-byte C-enum tag + a 16-byte union whose largest
/// members are pointer/`amf_int64`/`AMFFloatVector4D` (align 8) → 24 bytes total, tag at 0,
/// payload at 8. Passed BY VALUE to `SetProperty` (Win64 passes >8-byte aggregates by hidden
/// reference on both sides, so declaring it by value matches the C compiler). The payload is
/// stored as two fully-initialised `u64`s — little-endian packing puts a bool in byte 0, an
/// `amf_int64` in word 0, and an `AMFRate{num,den}` as `num | den << 32`, exactly the union's
/// in-memory layout — so no partially-initialised union bytes ever cross the FFI.
#[repr(C)]
pub struct AmfVariant {
pub vtype: i32,
pub payload: [u64; 2],
}
impl AmfVariant {
pub fn zeroed() -> Self {
AmfVariant {
vtype: 0, // AMF_VARIANT_EMPTY
payload: [0, 0],
}
}
pub fn from_i64(v: i64) -> Self {
AmfVariant {
vtype: AMF_VARIANT_INT64,
payload: [v as u64, 0],
}
}
pub fn from_bool(v: bool) -> Self {
AmfVariant {
vtype: AMF_VARIANT_BOOL,
payload: [v as u64, 0],
}
}
/// `AMFRate { num, den }` — two little-endian `amf_uint32`s in the union's first 8 bytes.
pub fn from_rate(num: u32, den: u32) -> Self {
AmfVariant {
vtype: AMF_VARIANT_RATE,
payload: [num as u64 | ((den as u64) << 32), 0],
}
}
/// An `AMFInterface*` payload (`pInterface` in the union's first 8 bytes). The property
/// storage AddRefs the interface when it copies the variant in (the C++ template
/// `SetProperty(name, AMFVariant(value))` passes a temporary whose destructor releases,
/// so `SetProperty` must take its own reference) — the caller keeps sole ownership of the
/// reference it already holds.
pub fn from_interface(p: *mut c_void) -> Self {
AmfVariant {
vtype: AMF_VARIANT_INTERFACE,
payload: [p as usize as u64, 0],
}
}
/// Read back an `amf_int64` payload (only valid when `vtype == AMF_VARIANT_INT64`).
pub fn as_i64(&self) -> Option<i64> {
(self.vtype == AMF_VARIANT_INT64).then_some(self.payload[0] as i64)
}
}
/// Placeholder for a vtable slot this module never calls — same size/align as the function
/// pointer it stands in for, present only to keep the following slots at their C offsets.
pub type Slot = *const c_void;
// -- AMFFactory (core/Factory.h; NOT refcounted — a process singleton) ----------------------
#[repr(C)]
pub struct AmfFactory {
pub vtbl: *const AmfFactoryVtbl,
}
#[repr(C)]
pub struct AmfFactoryVtbl {
pub create_context:
unsafe extern "system" fn(*mut AmfFactory, *mut *mut AmfContext) -> AmfResult,
pub create_component: unsafe extern "system" fn(
*mut AmfFactory,
*mut AmfContext,
*const u16,
*mut *mut AmfComponent,
) -> AmfResult,
pub set_cache_folder: Slot,
pub get_cache_folder: Slot,
pub get_debug: Slot,
pub get_trace: Slot,
pub get_programs: Slot,
}
// -- AMFContext (core/Context.h) ------------------------------------------------------------
#[repr(C)]
pub struct AmfContext {
pub vtbl: *const AmfContextVtbl,
}
#[repr(C)]
pub struct AmfContextVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfContext) -> i32,
pub query_interface: Slot,
// AMFPropertyStorage
pub set_property: Slot,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFContext
pub terminate: unsafe extern "system" fn(*mut AmfContext) -> AmfResult,
pub init_dx9: Slot,
pub get_dx9_device: Slot,
pub lock_dx9: Slot,
pub unlock_dx9: Slot,
pub init_dx11: unsafe extern "system" fn(*mut AmfContext, *mut c_void, i32) -> AmfResult,
pub get_dx11_device: Slot,
pub lock_dx11: Slot,
pub unlock_dx11: Slot,
pub init_opencl: Slot,
pub get_opencl_context: Slot,
pub get_opencl_command_queue: Slot,
pub get_opencl_device_id: Slot,
pub get_opencl_compute_factory: Slot,
pub init_opencl_ex: Slot,
pub lock_opencl: Slot,
pub unlock_opencl: Slot,
pub init_opengl: Slot,
pub get_opengl_context: Slot,
pub get_opengl_drawable: Slot,
pub lock_opengl: Slot,
pub unlock_opengl: Slot,
pub init_xv: Slot,
pub get_xv_device: Slot,
pub lock_xv: Slot,
pub unlock_xv: Slot,
pub init_gralloc: Slot,
pub get_gralloc_device: Slot,
pub lock_gralloc: Slot,
pub unlock_gralloc: Slot,
pub alloc_buffer: unsafe extern "system" fn(
*mut AmfContext,
i32, // AMF_MEMORY_TYPE
usize,
*mut *mut AmfBuffer,
) -> AmfResult,
pub alloc_surface: Slot,
pub alloc_audio_buffer: Slot,
pub create_buffer_from_host_native: Slot,
pub create_surface_from_host_native: Slot,
pub create_surface_from_dx9_native: Slot,
/// Out-param is `AMFSurface**` in the header; declared as the `AmfData` base here because
/// every surface call this module makes (`SetPts`, `SetProperty`, `Release`,
/// `SubmitInput`) lives in the `AMFData` vtable prefix, which `AMFSurfaceVtbl` reproduces
/// slot-for-slot (single inheritance, same object pointer).
pub create_surface_from_dx11_native: unsafe extern "system" fn(
*mut AmfContext,
*mut c_void,
*mut *mut AmfData,
*mut c_void,
) -> AmfResult,
pub create_surface_from_opengl_native: Slot,
pub create_surface_from_gralloc_native: Slot,
pub create_surface_from_opencl_native: Slot,
pub create_buffer_from_opencl_native: Slot,
pub get_compute: Slot,
}
// -- AMFComponent (components/Component.h) --------------------------------------------------
#[repr(C)]
pub struct AmfComponent {
pub vtbl: *const AmfComponentVtbl,
}
#[repr(C)]
pub struct AmfComponentVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfComponent) -> i32,
pub query_interface: Slot,
// AMFPropertyStorage
pub set_property:
unsafe extern "system" fn(*mut AmfComponent, *const u16, AmfVariant) -> AmfResult,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFPropertyStorageEx
pub get_properties_info_count: Slot,
pub get_property_info_at: Slot,
pub get_property_info: Slot,
pub validate_property: Slot,
// AMFComponent
pub init: unsafe extern "system" fn(*mut AmfComponent, i32, i32, i32) -> AmfResult,
pub reinit: Slot,
pub terminate: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub drain: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub flush: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub submit_input: unsafe extern "system" fn(*mut AmfComponent, *mut AmfData) -> AmfResult,
pub query_output:
unsafe extern "system" fn(*mut AmfComponent, *mut *mut AmfData) -> AmfResult,
pub get_context: Slot,
pub set_output_data_allocator_cb: Slot,
pub get_caps: Slot,
pub optimize: Slot,
}
// -- AMFData (core/Data.h) — also the usable prefix of AMFSurface --------------------------
#[repr(C)]
pub struct AmfData {
pub vtbl: *const AmfDataVtbl,
}
#[repr(C)]
pub struct AmfDataVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfData) -> i32,
pub query_interface:
unsafe extern "system" fn(*mut AmfData, *const AmfGuid, *mut *mut c_void) -> AmfResult,
// AMFPropertyStorage
pub set_property:
unsafe extern "system" fn(*mut AmfData, *const u16, AmfVariant) -> AmfResult,
pub get_property:
unsafe extern "system" fn(*mut AmfData, *const u16, *mut AmfVariant) -> AmfResult,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFData
pub get_memory_type: Slot,
pub duplicate: Slot,
pub convert: Slot,
pub interop: Slot,
pub get_data_type: Slot,
pub is_reusable: Slot,
pub set_pts: unsafe extern "system" fn(*mut AmfData, i64),
pub get_pts: Slot,
pub set_duration: Slot,
pub get_duration: Slot,
}
// -- AMFBuffer (core/Buffer.h) — the encoder's output object -------------------------------
#[repr(C)]
pub struct AmfBuffer {
pub vtbl: *const AmfBufferVtbl,
}
#[repr(C)]
pub struct AmfBufferVtbl {
// AMFInterface + AMFPropertyStorage + AMFData prefix (identical order to AmfDataVtbl).
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfBuffer) -> i32,
pub query_interface: Slot,
pub set_property: Slot,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
pub get_memory_type: Slot,
pub duplicate: Slot,
pub convert: Slot,
pub interop: Slot,
pub get_data_type: Slot,
pub is_reusable: Slot,
pub set_pts: Slot,
pub get_pts: Slot,
pub set_duration: Slot,
pub get_duration: Slot,
// AMFBuffer
pub set_size: Slot,
pub get_size: unsafe extern "system" fn(*mut AmfBuffer) -> usize,
pub get_native: unsafe extern "system" fn(*mut AmfBuffer) -> *mut c_void,
pub add_observer_buffer: Slot,
pub remove_observer_buffer: Slot,
}
// -- DLL entry points (core/Factory.h; AMF_CDECL_CALL) --------------------------------------
pub type AmfQueryVersionFn = unsafe extern "C" fn(*mut u64) -> AmfResult;
pub type AmfInitFn = unsafe extern "C" fn(u64, *mut *mut AmfFactory) -> AmfResult;
}
// The hand-mirrored AMF C ABI lives in `amf_sys.rs` (WP7.4): pure FFI surface, no policy —
// isolating the unsafe vtable mirror from the encoder logic is the crate's stated review
// goal, and the `#[path]` keeps the module name (`sys::`) and every call site unchanged.
#[path = "amf_sys.rs"]
mod sys;
use sys::{result_name, AmfVariant};
crates/pf-encode/src/enc/windows/amf_sys.rs
+414
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@@ -0,0 +1,414 @@
//! Mirrored AMF C ABI (written against GPUOpen header release v1.4.36 — amf/public/include; every
//! slot below is a base-interface slot whose layout is stable since <= v1.4.34, the loader's
//! accepted ABI floor, so the mirror is valid on every runtime the loader admits).
//!
//! Layout rules this mirror relies on: every AMF interface is a struct whose sole member is a
//! pointer to a C vtable; derived interfaces PREPEND their base's slots in order (AMFInterface →
//! AMFPropertyStorage → AMFData → AMFBuffer/AMFSurface), so a derived pointer is usable through a
//! base vtable mirror. Slots we never call are declared as bare `*const c_void` placeholders —
//! same size/alignment as the function pointer they stand in for. `AMF_STD_CALL` is `__stdcall`
//! (Rust `extern "system"`); the two DLL entry points are `__cdecl` (`extern "C"`); on x86_64
//! both collapse to the one Windows calling convention.
use std::ffi::c_void;
/// `AMF_RESULT` (core/Result.h) — a plain C enum, sequential from 0. Only the codes this
/// module branches on are named; everything else is reported numerically via [`result_name`].
pub type AmfResult = i32;
pub const AMF_OK: AmfResult = 0;
pub const AMF_EOF: AmfResult = 23;
pub const AMF_REPEAT: AmfResult = 24;
pub const AMF_INPUT_FULL: AmfResult = 25;
pub const AMF_NEED_MORE_INPUT: AmfResult = 44;
/// Human-readable name for an `AMF_RESULT` (diagnostics only — the numeric value rides along
/// so an unnamed code is still identifiable against Result.h).
pub fn result_name(r: AmfResult) -> &'static str {
match r {
0 => "AMF_OK",
1 => "AMF_FAIL",
2 => "AMF_UNEXPECTED",
3 => "AMF_ACCESS_DENIED",
4 => "AMF_INVALID_ARG",
5 => "AMF_OUT_OF_RANGE",
6 => "AMF_OUT_OF_MEMORY",
7 => "AMF_INVALID_POINTER",
8 => "AMF_NO_INTERFACE",
9 => "AMF_NOT_IMPLEMENTED",
10 => "AMF_NOT_SUPPORTED",
11 => "AMF_NOT_FOUND",
12 => "AMF_ALREADY_INITIALIZED",
13 => "AMF_NOT_INITIALIZED",
14 => "AMF_INVALID_FORMAT",
15 => "AMF_WRONG_STATE",
17 => "AMF_NO_DEVICE",
18 => "AMF_DIRECTX_FAILED",
23 => "AMF_EOF",
24 => "AMF_REPEAT",
25 => "AMF_INPUT_FULL",
26 => "AMF_RESOLUTION_CHANGED",
28 => "AMF_INVALID_DATA_TYPE",
29 => "AMF_INVALID_RESOLUTION",
30 => "AMF_CODEC_NOT_SUPPORTED",
31 => "AMF_SURFACE_FORMAT_NOT_SUPPORTED",
32 => "AMF_SURFACE_MUST_BE_SHARED",
36 => "AMF_ENCODER_NOT_PRESENT",
44 => "AMF_NEED_MORE_INPUT",
_ => "AMF_<unnamed>",
}
}
/// The AMF header release this FFI mirror was written against: `AMF_FULL_VERSION` for 1.4.36.0
/// (core/Version.h `AMF_MAKE_FULL_VERSION`). This is the version claimed to `AMFInit` — but
/// capped at the runtime's own reported version (see `load_factory`), so an older-but-accepted
/// runtime is asked only for the ABI it actually provides.
pub const AMF_HEADER_VERSION: u64 = (1u64 << 48) | (4u64 << 32) | (36u64 << 16);
/// The oldest AMF runtime the loader accepts (`AMF_FULL_VERSION` 1.4.34.0 — AMD Adrenalin
/// 24.6.1). This is an **ABI floor, not a feature floor**: every vtable slot mirrored in this
/// module belongs to a base interface (`AMFFactory`/`AMFContext`/`AMFComponent`/`AMFData`/
/// `AMFBuffer`) whose layout has been stable — append-only, no mid-vtable insertions — since
/// well before 1.4.34, so a 1.4.34 runtime is guaranteed to expose every mirrored slot at its
/// mirrored offset. Everything 1.4.35/1.4.36 added that this path can touch (new HQ presets,
/// AV1 B-frame / picture management) is a *string-keyed encoder property*, applied through
/// [`set_prop`] with `required=false` — a runtime that lacks it rejects the property (logged)
/// and the feature degrades, rather than shifting any vtable offset. Below this floor the
/// mirror is not guaranteed to match, so the loader declines cleanly (an old-driver decline,
/// never UB).
pub const AMF_MIN_VERSION: u64 = (1u64 << 48) | (4u64 << 32) | (34u64 << 16);
/// `AMF_SURFACE_FORMAT` (core/Surface.h).
pub const AMF_SURFACE_NV12: i32 = 1;
pub const AMF_SURFACE_P010: i32 = 10;
/// `AMF_DX_VERSION::AMF_DX11_1` (core/Data.h) — the `InitDX11` version argument.
pub const AMF_DX11_1: i32 = 111;
/// `AMF_MEMORY_TYPE::AMF_MEMORY_HOST` (core/Data.h) — the `AllocBuffer` memory type for the
/// CPU-filled HDR-metadata buffer.
pub const AMF_MEMORY_HOST: i32 = 1;
/// `AMFHDRMetadata` (components/ColorSpace.h) — the payload of the `*InHDRMetadata` encoder
/// property (an `AMFBuffer` holding exactly this struct). Same units as the HEVC ST.2086 SEI
/// and [`punktfunk_core::quic::HdrMeta`]: chromaticities in 1/50000, mastering luminance in
/// 0.0001 cd/m², CLL/FALL in nits. 28 bytes, no padding.
#[repr(C)]
pub struct AmfHdrMetadata {
pub red_primary: [u16; 2],
pub green_primary: [u16; 2],
pub blue_primary: [u16; 2],
pub white_point: [u16; 2],
pub max_mastering_luminance: u32,
pub min_mastering_luminance: u32,
pub max_content_light_level: u16,
pub max_frame_average_light_level: u16,
}
/// `AMFGuid` (core/Platform.h) — data41..data48 flattened into an array (identical layout).
#[repr(C)]
pub struct AmfGuid {
pub data1: u32,
pub data2: u16,
pub data3: u16,
pub data4: [u8; 8],
}
/// `IID_AMFBuffer` (core/Buffer.h `AMF_DECLARE_IID`) — for `QueryInterface` on the encoder's
/// output `AMFData` to reach `GetNative`/`GetSize`.
pub const IID_AMF_BUFFER: AmfGuid = AmfGuid {
data1: 0xb04b_7248,
data2: 0xb6f0,
data3: 0x4321,
data4: [0xb6, 0x91, 0xba, 0xa4, 0x74, 0x0f, 0x9f, 0xcb],
};
// `AMF_VARIANT_TYPE` (core/Variant.h) — the tags this module writes/reads.
pub const AMF_VARIANT_BOOL: i32 = 1;
pub const AMF_VARIANT_INT64: i32 = 2;
pub const AMF_VARIANT_RATE: i32 = 7;
pub const AMF_VARIANT_INTERFACE: i32 = 12;
/// `AMFVariantStruct` (core/Variant.h): a 4-byte C-enum tag + a 16-byte union whose largest
/// members are pointer/`amf_int64`/`AMFFloatVector4D` (align 8) → 24 bytes total, tag at 0,
/// payload at 8. Passed BY VALUE to `SetProperty` (Win64 passes >8-byte aggregates by hidden
/// reference on both sides, so declaring it by value matches the C compiler). The payload is
/// stored as two fully-initialised `u64`s — little-endian packing puts a bool in byte 0, an
/// `amf_int64` in word 0, and an `AMFRate{num,den}` as `num | den << 32`, exactly the union's
/// in-memory layout — so no partially-initialised union bytes ever cross the FFI.
#[repr(C)]
pub struct AmfVariant {
pub vtype: i32,
pub payload: [u64; 2],
}
impl AmfVariant {
pub fn zeroed() -> Self {
AmfVariant {
vtype: 0, // AMF_VARIANT_EMPTY
payload: [0, 0],
}
}
pub fn from_i64(v: i64) -> Self {
AmfVariant {
vtype: AMF_VARIANT_INT64,
payload: [v as u64, 0],
}
}
pub fn from_bool(v: bool) -> Self {
AmfVariant {
vtype: AMF_VARIANT_BOOL,
payload: [v as u64, 0],
}
}
/// `AMFRate { num, den }` — two little-endian `amf_uint32`s in the union's first 8 bytes.
pub fn from_rate(num: u32, den: u32) -> Self {
AmfVariant {
vtype: AMF_VARIANT_RATE,
payload: [num as u64 | ((den as u64) << 32), 0],
}
}
/// An `AMFInterface*` payload (`pInterface` in the union's first 8 bytes). The property
/// storage AddRefs the interface when it copies the variant in (the C++ template
/// `SetProperty(name, AMFVariant(value))` passes a temporary whose destructor releases,
/// so `SetProperty` must take its own reference) — the caller keeps sole ownership of the
/// reference it already holds.
pub fn from_interface(p: *mut c_void) -> Self {
AmfVariant {
vtype: AMF_VARIANT_INTERFACE,
payload: [p as usize as u64, 0],
}
}
/// Read back an `amf_int64` payload (only valid when `vtype == AMF_VARIANT_INT64`).
pub fn as_i64(&self) -> Option<i64> {
(self.vtype == AMF_VARIANT_INT64).then_some(self.payload[0] as i64)
}
}
/// Placeholder for a vtable slot this module never calls — same size/align as the function
/// pointer it stands in for, present only to keep the following slots at their C offsets.
pub type Slot = *const c_void;
// -- AMFFactory (core/Factory.h; NOT refcounted — a process singleton) ----------------------
#[repr(C)]
pub struct AmfFactory {
pub vtbl: *const AmfFactoryVtbl,
}
#[repr(C)]
pub struct AmfFactoryVtbl {
pub create_context:
unsafe extern "system" fn(*mut AmfFactory, *mut *mut AmfContext) -> AmfResult,
pub create_component: unsafe extern "system" fn(
*mut AmfFactory,
*mut AmfContext,
*const u16,
*mut *mut AmfComponent,
) -> AmfResult,
pub set_cache_folder: Slot,
pub get_cache_folder: Slot,
pub get_debug: Slot,
pub get_trace: Slot,
pub get_programs: Slot,
}
// -- AMFContext (core/Context.h) ------------------------------------------------------------
#[repr(C)]
pub struct AmfContext {
pub vtbl: *const AmfContextVtbl,
}
#[repr(C)]
pub struct AmfContextVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfContext) -> i32,
pub query_interface: Slot,
// AMFPropertyStorage
pub set_property: Slot,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFContext
pub terminate: unsafe extern "system" fn(*mut AmfContext) -> AmfResult,
pub init_dx9: Slot,
pub get_dx9_device: Slot,
pub lock_dx9: Slot,
pub unlock_dx9: Slot,
pub init_dx11: unsafe extern "system" fn(*mut AmfContext, *mut c_void, i32) -> AmfResult,
pub get_dx11_device: Slot,
pub lock_dx11: Slot,
pub unlock_dx11: Slot,
pub init_opencl: Slot,
pub get_opencl_context: Slot,
pub get_opencl_command_queue: Slot,
pub get_opencl_device_id: Slot,
pub get_opencl_compute_factory: Slot,
pub init_opencl_ex: Slot,
pub lock_opencl: Slot,
pub unlock_opencl: Slot,
pub init_opengl: Slot,
pub get_opengl_context: Slot,
pub get_opengl_drawable: Slot,
pub lock_opengl: Slot,
pub unlock_opengl: Slot,
pub init_xv: Slot,
pub get_xv_device: Slot,
pub lock_xv: Slot,
pub unlock_xv: Slot,
pub init_gralloc: Slot,
pub get_gralloc_device: Slot,
pub lock_gralloc: Slot,
pub unlock_gralloc: Slot,
pub alloc_buffer: unsafe extern "system" fn(
*mut AmfContext,
i32, // AMF_MEMORY_TYPE
usize,
*mut *mut AmfBuffer,
) -> AmfResult,
pub alloc_surface: Slot,
pub alloc_audio_buffer: Slot,
pub create_buffer_from_host_native: Slot,
pub create_surface_from_host_native: Slot,
pub create_surface_from_dx9_native: Slot,
/// Out-param is `AMFSurface**` in the header; declared as the `AmfData` base here because
/// every surface call this module makes (`SetPts`, `SetProperty`, `Release`,
/// `SubmitInput`) lives in the `AMFData` vtable prefix, which `AMFSurfaceVtbl` reproduces
/// slot-for-slot (single inheritance, same object pointer).
pub create_surface_from_dx11_native: unsafe extern "system" fn(
*mut AmfContext,
*mut c_void,
*mut *mut AmfData,
*mut c_void,
) -> AmfResult,
pub create_surface_from_opengl_native: Slot,
pub create_surface_from_gralloc_native: Slot,
pub create_surface_from_opencl_native: Slot,
pub create_buffer_from_opencl_native: Slot,
pub get_compute: Slot,
}
// -- AMFComponent (components/Component.h) --------------------------------------------------
#[repr(C)]
pub struct AmfComponent {
pub vtbl: *const AmfComponentVtbl,
}
#[repr(C)]
pub struct AmfComponentVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfComponent) -> i32,
pub query_interface: Slot,
// AMFPropertyStorage
pub set_property:
unsafe extern "system" fn(*mut AmfComponent, *const u16, AmfVariant) -> AmfResult,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFPropertyStorageEx
pub get_properties_info_count: Slot,
pub get_property_info_at: Slot,
pub get_property_info: Slot,
pub validate_property: Slot,
// AMFComponent
pub init: unsafe extern "system" fn(*mut AmfComponent, i32, i32, i32) -> AmfResult,
pub reinit: Slot,
pub terminate: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub drain: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub flush: unsafe extern "system" fn(*mut AmfComponent) -> AmfResult,
pub submit_input: unsafe extern "system" fn(*mut AmfComponent, *mut AmfData) -> AmfResult,
pub query_output: unsafe extern "system" fn(*mut AmfComponent, *mut *mut AmfData) -> AmfResult,
pub get_context: Slot,
pub set_output_data_allocator_cb: Slot,
pub get_caps: Slot,
pub optimize: Slot,
}
// -- AMFData (core/Data.h) — also the usable prefix of AMFSurface --------------------------
#[repr(C)]
pub struct AmfData {
pub vtbl: *const AmfDataVtbl,
}
#[repr(C)]
pub struct AmfDataVtbl {
// AMFInterface
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfData) -> i32,
pub query_interface:
unsafe extern "system" fn(*mut AmfData, *const AmfGuid, *mut *mut c_void) -> AmfResult,
// AMFPropertyStorage
pub set_property: unsafe extern "system" fn(*mut AmfData, *const u16, AmfVariant) -> AmfResult,
pub get_property:
unsafe extern "system" fn(*mut AmfData, *const u16, *mut AmfVariant) -> AmfResult,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
// AMFData
pub get_memory_type: Slot,
pub duplicate: Slot,
pub convert: Slot,
pub interop: Slot,
pub get_data_type: Slot,
pub is_reusable: Slot,
pub set_pts: unsafe extern "system" fn(*mut AmfData, i64),
pub get_pts: Slot,
pub set_duration: Slot,
pub get_duration: Slot,
}
// -- AMFBuffer (core/Buffer.h) — the encoder's output object -------------------------------
#[repr(C)]
pub struct AmfBuffer {
pub vtbl: *const AmfBufferVtbl,
}
#[repr(C)]
pub struct AmfBufferVtbl {
// AMFInterface + AMFPropertyStorage + AMFData prefix (identical order to AmfDataVtbl).
pub acquire: Slot,
pub release: unsafe extern "system" fn(*mut AmfBuffer) -> i32,
pub query_interface: Slot,
pub set_property: Slot,
pub get_property: Slot,
pub has_property: Slot,
pub get_property_count: Slot,
pub get_property_at: Slot,
pub clear: Slot,
pub add_to: Slot,
pub copy_to: Slot,
pub add_observer: Slot,
pub remove_observer: Slot,
pub get_memory_type: Slot,
pub duplicate: Slot,
pub convert: Slot,
pub interop: Slot,
pub get_data_type: Slot,
pub is_reusable: Slot,
pub set_pts: Slot,
pub get_pts: Slot,
pub set_duration: Slot,
pub get_duration: Slot,
// AMFBuffer
pub set_size: Slot,
pub get_size: unsafe extern "system" fn(*mut AmfBuffer) -> usize,
pub get_native: unsafe extern "system" fn(*mut AmfBuffer) -> *mut c_void,
pub add_observer_buffer: Slot,
pub remove_observer_buffer: Slot,
}
// -- DLL entry points (core/Factory.h; AMF_CDECL_CALL) --------------------------------------
pub type AmfQueryVersionFn = unsafe extern "C" fn(*mut u64) -> AmfResult;
pub type AmfInitFn = unsafe extern "C" fn(u64, *mut *mut AmfFactory) -> AmfResult;