1 // Copyright 2022 The ChromiumOS Authors 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 //! This file contains a dummy backend whose only purpose is to let the decoder 6 //! run so we can test it in isolation. 7 8 use std::cell::RefCell; 9 use std::rc::Rc; 10 11 use crate::backend::dummy::decoder::Backend; 12 use crate::backend::dummy::decoder::Handle; 13 use crate::codec::vp9::parser::Header; 14 use crate::codec::vp9::parser::MAX_SEGMENTS; 15 use crate::codec::vp9::parser::NUM_REF_FRAMES; 16 use crate::decoder::stateless::vp9::Segmentation; 17 use crate::decoder::stateless::vp9::StatelessVp9DecoderBackend; 18 use crate::decoder::stateless::vp9::Vp9; 19 use crate::decoder::stateless::NewPictureResult; 20 use crate::decoder::stateless::NewStatelessDecoderError; 21 use crate::decoder::stateless::StatelessBackendResult; 22 use crate::decoder::stateless::StatelessDecoder; 23 use crate::decoder::BlockingMode; 24 25 impl StatelessVp9DecoderBackend for Backend { new_sequence(&mut self, _: &Header) -> StatelessBackendResult<()>26 fn new_sequence(&mut self, _: &Header) -> StatelessBackendResult<()> { 27 Ok(()) 28 } 29 new_picture(&mut self, _: u64) -> NewPictureResult<Self::Picture>30 fn new_picture(&mut self, _: u64) -> NewPictureResult<Self::Picture> { 31 Ok(()) 32 } 33 submit_picture( &mut self, _: Self::Picture, _: &Header, _: &[Option<Self::Handle>; NUM_REF_FRAMES], _: &[u8], _: &[Segmentation; MAX_SEGMENTS], ) -> StatelessBackendResult<Self::Handle>34 fn submit_picture( 35 &mut self, 36 _: Self::Picture, 37 _: &Header, 38 _: &[Option<Self::Handle>; NUM_REF_FRAMES], 39 _: &[u8], 40 _: &[Segmentation; MAX_SEGMENTS], 41 ) -> StatelessBackendResult<Self::Handle> { 42 Ok(Handle { handle: Rc::new(RefCell::new(Default::default())) }) 43 } 44 } 45 46 impl StatelessDecoder<Vp9, Backend> { 47 // Creates a new instance of the decoder using the dummy backend. new_dummy(blocking_mode: BlockingMode) -> Result<Self, NewStatelessDecoderError>48 pub fn new_dummy(blocking_mode: BlockingMode) -> Result<Self, NewStatelessDecoderError> { 49 Self::new(Backend::new(), blocking_mode) 50 } 51 } 52