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

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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
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@ -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, \