TODO-HWAccel.md

@@ -3,16 +3,22 @@
 I like the idea of the `hwaccel` param to `av.open` to allow for some magic, e.g.:
 
 ```
-av.open(..., hwaccel=True)  # automatically set up what it can.
+av.open(..., hwaccel=True or 'auto')  # automatically set up what it can.
 av.open(..., hwaccel='CUDA')  # use cuda with default options
 av.open(..., hwaccel='/dev/gpu0')  # use whatever device type with the given device
 av.open(..., hwaccel=dict(type='CUDA', device='/dev/gpu0', ...))  # more options
 ```
 
+If there are no options to pass, consider using a tuple to pass the device:
+
+```
+av.open(..., hwaccel=('CUDA', '/dev/gpu0'))
+```
+
 ## TODO
 - [x] `av.hwdevice.HWDeviceType` enum
 - [x] `av.codec.hwconfig.HWConfig`
 - [x] `av.codec.Codec.hardware_configs` tuple of `HWConfig`
-- [ ] Determine that there are even options to bother passing.
+- [ ] Determine that there are even options to bother passing; it doesn't look like it.
 - [ ] Design the `av.open` interface.
 - [ ] Implement it.