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lavu/hwcontext_vaapi: Add option to allow to specify vendor id when init hw device 

Vendor id will help to select desired device in case of kernel driver is
unknow or unsupported, for vendor may support different kernel driver on
different platforms.

Signed-off-by: Fei Wang <fei.w.wang@intel.com>
This commit is contained in:
Fei Wang 2024-07-26 09:05:20 +08:00 committed by Haihao Xiang
parent c390234da2
commit dbd74ba3c8
3 changed files with 38 additions and 1 deletions
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8
doc/ffmpeg.texi
View File

@ -1458,6 +1458,11 @@ The following options are recognized:
When @var{device} is not specified, use this option to specify the name of the kernel
driver associated with the desired device. This option is available only when
the hardware acceleration method @emph{drm} and @emph{vaapi} are enabled.
@item vendor_id
When @var{device} and @var{kernel_driver} are not specified, use this option to specify
the vendor id associated with the desired device. This option is available only when the
hardware acceleration method @emph{drm} and @emph{vaapi} are enabled and @emph{kernel_driver}
is not specified.
@end table
Examples:
@ -1473,6 +1478,9 @@ Create a vaapi device on DirectX adapter 1.
@item -init_hw_device vaapi:,kernel_driver=i915
Create a vaapi device on a device associated with kernel driver @samp{i915}.
@item -init_hw_device vaapi:,vendor_id=0x8086
Create a vaapi device on a device associated with vendor id @samp{0x8086}.
@end table
@item vdpau

29
libavutil/hwcontext_vaapi.c
View File

@ -1748,7 +1748,9 @@ static int vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
#if CONFIG_LIBDRM
drmVersion *info;
const AVDictionaryEntry *kernel_driver;
const AVDictionaryEntry *vendor_id;
kernel_driver = av_dict_get(opts, "kernel_driver", NULL, 0);
vendor_id = av_dict_get(opts, "vendor_id", NULL, 0);
#endif
for (n = 0; n < max_devices; n++) {
snprintf(path, sizeof(path),
@ -1803,6 +1805,33 @@ static int vaapi_device_create(AVHWDeviceContext *ctx, const char *device,
close(priv->drm_fd);
priv->drm_fd = -1;
continue;
} else if (vendor_id) {
drmDevicePtr device;
char drm_vendor[8];
if (drmGetDevice(priv->drm_fd, &device)) {
av_log(ctx, AV_LOG_VERBOSE,
"Failed to get DRM device info for device %d.\n", n);
close(priv->drm_fd);
priv->drm_fd = -1;
continue;
}
snprintf(drm_vendor, sizeof(drm_vendor), "0x%x", device->deviceinfo.pci->vendor_id);
if (strcmp(vendor_id->value, drm_vendor)) {
av_log(ctx, AV_LOG_VERBOSE, "Ignoring device %d "
"with non-matching vendor id (%s).\n",
n, vendor_id->value);
drmFreeDevice(&device);
close(priv->drm_fd);
priv->drm_fd = -1;
continue;
}
av_log(ctx, AV_LOG_VERBOSE, "Trying to use "
"DRM render node for device %d, "
"with matching vendor id (%s).\n",
n, vendor_id->value);
drmFreeDevice(&device);
break;
}
drmFreeVersion(info);
#endif

2
libavutil/version.h
View File

@ -79,7 +79,7 @@
*/
#define LIBAVUTIL_VERSION_MAJOR 59
#define LIBAVUTIL_VERSION_MINOR 32
#define LIBAVUTIL_VERSION_MINOR 33
#define LIBAVUTIL_VERSION_MICRO 100
#define LIBAVUTIL_VERSION_INT AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \