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starting point for implementing hwaccel
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| extern crate ffmpeg_next as ffmpeg; | ||
|
|
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| use crate::hwaccel::HardwareAccelerationDeviceType; | ||
|
|
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| pub struct HardwareDeviceContext { | ||
| ptr: *mut ffmpeg::ffi::AVBufferRef, | ||
| } | ||
|
|
||
| impl HardwareDeviceContext { | ||
| pub fn new( | ||
| device_type: HardwareAccelerationDeviceType, | ||
| ) -> Result<HardwareDeviceContext, ffmpeg::error::Error> { | ||
| let mut ptr: *mut ffmpeg::ffi::AVBufferRef = std::ptr::null_mut(); | ||
|
|
||
| unsafe { | ||
| match ffmpeg::ffi::av_hwdevice_ctx_create( | ||
| (&mut ptr) as *mut *mut ffmpeg::ffi::AVBufferRef, | ||
| device_type.into(), | ||
| std::ptr::null(), | ||
| std::ptr::null_mut(), | ||
| 0, | ||
| ) { | ||
| 0 => Ok(HardwareDeviceContext { ptr }), | ||
| e => Err(ffmpeg::error::Error::from(e)), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| unsafe fn ref_raw(&self) -> *mut ffmpeg::ffi::AVBufferRef { | ||
| ffmpeg::ffi::av_buffer_ref(self.ptr) | ||
| } | ||
| } | ||
|
|
||
| impl Drop for HardwareDeviceContext { | ||
| fn drop(&mut self) { | ||
| unsafe { | ||
| ffmpeg::ffi::av_buffer_unref(&mut self.ptr); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| pub fn hwdevice_list_available_device_types() -> Vec<HardwareAccelerationDeviceType> { | ||
| let mut hwdevice_types = Vec::new(); | ||
| let mut hwdevice_type = unsafe { | ||
| ffmpeg::ffi::av_hwdevice_iterate_types(ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_NONE) | ||
| }; | ||
| while hwdevice_type != ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_NONE { | ||
| hwdevice_types.push(HardwareAccelerationDeviceType::from(hwdevice_type).unwrap()); | ||
| hwdevice_type = unsafe { ffmpeg::ffi::av_hwdevice_iterate_types(hwdevice_type) }; | ||
| } | ||
| hwdevice_types | ||
| } | ||
|
|
||
| pub fn codec_find_corresponding_hwaccel_pixfmt( | ||
| codec: &ffmpeg::codec::codec::Codec, | ||
| hwaccel_type: HardwareAccelerationDeviceType, | ||
| ) -> Option<ffmpeg::format::pixel::Pixel> { | ||
| let mut i = 0; | ||
| loop { | ||
| unsafe { | ||
| let hw_config = ffmpeg::ffi::avcodec_get_hw_config(codec.as_ptr(), i); | ||
| if !hw_config.is_null() { | ||
| let hw_config_supports_codec = (((*hw_config).methods) as i32 | ||
| & ffmpeg::ffi::AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX as i32) | ||
| != 0; | ||
| if hw_config_supports_codec && (*hw_config).device_type == hwaccel_type.into() { | ||
| break Some((*hw_config).pix_fmt.into()); | ||
| } | ||
| } else { | ||
| break None; | ||
| } | ||
| } | ||
| i += 1; | ||
| } | ||
| } | ||
|
|
||
| pub fn codec_context_hwaccel_set_get_format( | ||
| codec_context: &mut ffmpeg::codec::context::Context, | ||
| hw_pixfmt: ffmpeg::format::pixel::Pixel, | ||
| ) { | ||
| unsafe { | ||
| (*codec_context.as_mut_ptr()).opaque = | ||
| ffmpeg::ffi::AVPixelFormat::from(hw_pixfmt) as i32 as _; | ||
| (*codec_context.as_mut_ptr()).get_format = Some(hwaccel_get_format); | ||
| } | ||
| } | ||
|
|
||
| pub fn codec_context_hwaccel_set_hw_device_ctx( | ||
| codec_context: &mut ffmpeg::codec::context::Context, | ||
| hardware_device_context: &HardwareDeviceContext, | ||
| ) { | ||
| unsafe { | ||
| (*codec_context.as_mut_ptr()).hw_device_ctx = hardware_device_context.ref_raw(); | ||
| } | ||
| } | ||
|
|
||
| #[no_mangle] | ||
| unsafe extern "C" fn hwaccel_get_format( | ||
| ctx: *mut ffmpeg::ffi::AVCodecContext, | ||
| pix_fmts: *const ffmpeg::ffi::AVPixelFormat, | ||
| ) -> ffmpeg::ffi::AVPixelFormat { | ||
| let mut p = pix_fmts; | ||
| while *p != ffmpeg::ffi::AVPixelFormat::AV_PIX_FMT_NONE { | ||
| if *p == std::mem::transmute((*ctx).opaque as i32) { | ||
| return *p; | ||
| } | ||
| p = p.add(1); | ||
| } | ||
| ffmpeg::ffi::AVPixelFormat::AV_PIX_FMT_NONE | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| extern crate ffmpeg_next as ffmpeg; | ||
|
|
||
| use crate::error::Error; | ||
| use crate::ffi_hwaccel; | ||
|
|
||
| type Result<T> = std::result::Result<T, Error>; | ||
|
|
||
| pub struct HardwareAccelerationContext { | ||
| hardware_device_context: ffi_hwaccel::HardwareDeviceContext, | ||
| pixel_format: ffmpeg::util::format::Pixel, | ||
| } | ||
|
|
||
| impl HardwareAccelerationContext { | ||
| pub fn new( | ||
| decoder: &mut ffmpeg::codec::Context, | ||
| device_type: HardwareAccelerationDeviceType, | ||
| ) -> Result<Self> { | ||
| let codec = decoder.codec().ok_or(Error::UninitializedCodec)?; | ||
| let pixel_format = | ||
| ffi_hwaccel::codec_find_corresponding_hwaccel_pixfmt(&codec, device_type) | ||
| .ok_or(Error::UnsupportedCodecHardwareAccelerationDeviceType)?; | ||
|
|
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| ffi_hwaccel::codec_context_hwaccel_set_get_format(decoder, pixel_format); | ||
|
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| let hardware_device_context = ffi_hwaccel::HardwareDeviceContext::new(device_type)?; | ||
| ffi_hwaccel::codec_context_hwaccel_set_hw_device_ctx(decoder, &hardware_device_context); | ||
|
|
||
| Ok(HardwareAccelerationContext { | ||
| hardware_device_context, | ||
| pixel_format, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Copy, Clone, PartialEq, Eq)] | ||
| pub enum HardwareAccelerationDeviceType { | ||
| /// Video Decode and Presentation API for Unix (VDPAU) | ||
| Vdpau, | ||
| /// NVIDIA CUDA | ||
| Cuda, | ||
| /// Video Acceleration API (VA-API) | ||
| VaApi, | ||
| /// DirectX Video Acceleration 2.0 | ||
| Dxva2, | ||
| /// Quick Sync Video | ||
| Qsv, | ||
| /// VideoToolbox | ||
| VideoToolbox, | ||
| /// Direct3D 11 Video Acceleration | ||
| D3D11Va, | ||
| /// Linux Direct Rendering Manager | ||
| Drm, | ||
| /// OpenCL | ||
| OpenCl, | ||
| /// MediaCodec | ||
| MeiaCodec, | ||
| /// Vulkan | ||
| Vulkan, | ||
| /// Direct3D 12 Video Acceleration | ||
| D3D12Va, | ||
| } | ||
|
|
||
| impl HardwareAccelerationDeviceType { | ||
| /// Whether or not the device type is available on this system. | ||
| pub fn is_available(self) -> bool { | ||
| Self::list_available().contains(&self) | ||
| } | ||
|
|
||
| /// List available hardware acceleration device types on this system. | ||
| /// | ||
| /// Uses `av_hwdevice_iterate_types` internally. | ||
| pub fn list_available() -> Vec<HardwareAccelerationDeviceType> { | ||
| ffi_hwaccel::hwdevice_list_available_device_types() | ||
| } | ||
| } | ||
|
|
||
| impl HardwareAccelerationDeviceType { | ||
| pub fn from(value: ffmpeg::ffi::AVHWDeviceType) -> Option<HardwareAccelerationDeviceType> { | ||
| match value { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VDPAU => Some(Self::Vdpau), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_CUDA => Some(Self::Cuda), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VAAPI => Some(Self::VaApi), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_DXVA2 => Some(Self::Dxva2), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_QSV => Some(Self::Qsv), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VIDEOTOOLBOX => Some(Self::VideoToolbox), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_D3D11VA => Some(Self::D3D11Va), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_DRM => Some(Self::Drm), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_OPENCL => Some(Self::OpenCl), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_MEDIACODEC => Some(Self::MeiaCodec), | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VULKAN => Some(Self::Vulkan), | ||
| // ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_D3D12VA => Self::D3D12Va, | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_NONE => None, | ||
| } | ||
| } | ||
| } | ||
|
|
||
| impl From<HardwareAccelerationDeviceType> for ffmpeg::ffi::AVHWDeviceType { | ||
| fn from(value: HardwareAccelerationDeviceType) -> Self { | ||
| match value { | ||
| HardwareAccelerationDeviceType::Vdpau => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VDPAU | ||
| } | ||
| HardwareAccelerationDeviceType::Cuda => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_CUDA | ||
| } | ||
| HardwareAccelerationDeviceType::VaApi => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VAAPI | ||
| } | ||
| HardwareAccelerationDeviceType::Dxva2 => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_DXVA2 | ||
| } | ||
| HardwareAccelerationDeviceType::Qsv => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_QSV | ||
| } | ||
| HardwareAccelerationDeviceType::VideoToolbox => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VIDEOTOOLBOX | ||
| } | ||
| HardwareAccelerationDeviceType::D3D11Va => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_D3D11VA | ||
| } | ||
| HardwareAccelerationDeviceType::Drm => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_DRM | ||
| } | ||
| HardwareAccelerationDeviceType::OpenCl => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_OPENCL | ||
| } | ||
| HardwareAccelerationDeviceType::MeiaCodec => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_MEDIACODEC | ||
| } | ||
| HardwareAccelerationDeviceType::Vulkan => { | ||
| ffmpeg::ffi::AVHWDeviceType::AV_HWDEVICE_TYPE_VULKAN | ||
| } | ||
| HardwareAccelerationDeviceType::D3D12Va => { | ||
| unimplemented!() | ||
| } | ||
| } | ||
| } | ||
| } |
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