diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2010-09-10 14:47:56 -0700 |
|---|---|---|
| committer | Gerd Hoffmann <kraxel@redhat.com> | 2012-01-13 10:25:44 +0100 |
| commit | b870472db5c90d3c96f4b85fbdfce87ce8076fc8 (patch) | |
| tree | 20232ae712793fff9b2fd4a679fc86e49559f90e /hw/usb.h | |
| parent | cc5f13956c3e681d5974bc81b6d275c19666af4b (diff) | |
| download | focaccia-qemu-b870472db5c90d3c96f4b85fbdfce87ce8076fc8.tar.gz focaccia-qemu-b870472db5c90d3c96f4b85fbdfce87ce8076fc8.zip | |
usb: add audio device model
This brings a usb audio device to qemu. Output only, fixed at 16bit stereo @ 480000 Hz. Based on a patch from H. Peter Anvin <hpa@linux.intel.com> Usage: add '-device usb-audio' to your qemu command line. Works sorta ok on a idle machine. Known issues: * Is *very* sensitive to latencies. * Burns quite some CPU due to usb polling. In short: It brings the qemu usb emulation to its limits. Enjoy! Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'hw/usb.h')
| -rw-r--r-- | hw/usb.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/usb.h b/hw/usb.h index 1496f7694c..b2c9479594 100644 --- a/hw/usb.h +++ b/hw/usb.h @@ -79,6 +79,11 @@ #define USB_CLASS_APP_SPEC 0xfe #define USB_CLASS_VENDOR_SPEC 0xff +#define USB_SUBCLASS_UNDEFINED 0 +#define USB_SUBCLASS_AUDIO_CONTROL 1 +#define USB_SUBCLASS_AUDIO_STREAMING 2 +#define USB_SUBCLASS_AUDIO_MIDISTREAMING 3 + #define USB_DIR_OUT 0 #define USB_DIR_IN 0x80 @@ -132,6 +137,8 @@ #define USB_DT_OTHER_SPEED_CONFIG 0x07 #define USB_DT_DEBUG 0x0A #define USB_DT_INTERFACE_ASSOC 0x0B +#define USB_DT_CS_INTERFACE 0x24 +#define USB_DT_CS_ENDPOINT 0x25 #define USB_ENDPOINT_XFER_CONTROL 0 #define USB_ENDPOINT_XFER_ISOC 1 |