devices: virtio: Initial implementation of virtio-video device

This CL adds a fundamental part of the virtio video device, which will
be shared between the encoder and the decoder.
Both devices uses the virtio-video protocol proposed as RFC v3 [1,2].
The corresponding driver code is at CL:2060327 and its children CLs.

The actual decoding and encoding logic will be implemented in different
CLs.

[1]: mail: https://markmail.org/thread/wxdne5re7aaugbjg
[2]: PDF: https://drive.google.com/file/d/1jOsS2WdVhL4PpcWLO8Zukq5J0fXDiWn-/view

BUG=b:147465619, b:140082257
TEST=cargo check --features=video-decoder,video-encoder
TEST=ARCVM started with --video-decoder --video-encoder

Cq-Depend: chromium:2203997
Change-Id: I01999eea218ba0f3aaed1558ca2311a57d0c6819
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1973973
Reviewed-by: Keiichi Watanabe <keiichiw@chromium.org>
Tested-by: Keiichi Watanabe <keiichiw@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Keiichi Watanabe <keiichiw@chromium.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/crosvm.rs b/src/crosvm.rs
index 49a08c0..33ed236 100644
--- a/src/crosvm.rs
+++ b/src/crosvm.rs
@@ -202,6 +202,8 @@ pub struct Config {
     pub virtio_input_evdevs: Vec<PathBuf>,
     pub split_irqchip: bool,
     pub vfio: Vec<PathBuf>,
+    pub video_dec: bool,
+    pub video_enc: bool,
 }
 
 impl Default for Config {
@@ -250,6 +252,8 @@ impl Default for Config {
             virtio_input_evdevs: Vec::new(),
             split_irqchip: false,
             vfio: Vec::new(),
+            video_dec: false,
+            video_enc: false,
         }
     }
 }