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nvenc: Query maximum supported API version

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We've been using NvEncodeAPICreateInstance method to find the supported API
version, but that seems to be insufficient since there is a case
where plugin failed in opening encoding session even if NvEncodeAPICreateInstance
succeeded. Asking driver about the version would be the most certain way.
This commit is contained in:
Seungha Yang 2020-01-29 18:55:55 +09:00 committed by GStreamer Merge Bot
parent 0a128155b3
commit 3f4a84bd32
1 changed files with 34 additions and 4 deletions
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38
sys/nvcodec/gstnvenc.c
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@ -53,6 +53,10 @@ typedef NVENCSTATUS NVENCAPI
tNvEncodeAPICreateInstance (NV_ENCODE_API_FUNCTION_LIST * functionList);
tNvEncodeAPICreateInstance *nvEncodeAPICreateInstance;
typedef NVENCSTATUS NVENCAPI
tNvEncodeAPIGetMaxSupportedVersion (uint32_t * version);
tNvEncodeAPIGetMaxSupportedVersion *nvEncodeAPIGetMaxSupportedVersion;
GST_DEBUG_CATEGORY_EXTERN (gst_nvenc_debug);
#define GST_CAT_DEFAULT gst_nvenc_debug
@ -849,6 +853,8 @@ gst_nvenc_load_library (void)
{
GModule *module;
NVENCSTATUS ret = NV_ENC_SUCCESS;
uint32_t max_supported_version;
gint major_ver, minor_ver;
gint i;
static const GstNvEncVersion version_list[] = {
{NVENCAPI_MAJOR_VERSION, NVENCAPI_MINOR_VERSION},
@ -869,8 +875,11 @@ gst_nvenc_load_library (void)
return FALSE;
}
nvenc_api.version = NV_ENCODE_API_FUNCTION_LIST_VER;
ret = nvEncodeAPICreateInstance (&nvenc_api);
if (!g_module_symbol (module, "NvEncodeAPIGetMaxSupportedVersion",
(gpointer *) & nvEncodeAPIGetMaxSupportedVersion)) {
GST_ERROR ("NvEncodeAPIGetMaxSupportedVersion unavailable");
return FALSE;
}
/* WARNING: Any developers who want to bump SDK version must ensure that
* following macro values were not changed and also need to check ABI compatibility.
@ -904,16 +913,37 @@ gst_nvenc_load_library (void)
* NV_ENCODE_API_FUNCTION_LIST_VER NVENCAPI_STRUCT_VERSION(2)
*/
ret = nvEncodeAPIGetMaxSupportedVersion (&max_supported_version);
if (ret != NV_ENC_SUCCESS) {
GST_ERROR ("Could not query max supported api version, ret %d", ret);
return FALSE;
}
/* 4 LSB: minor version
* the rest: major version */
major_ver = max_supported_version >> 4;
minor_ver = max_supported_version & 0xf;
GST_INFO ("Maximum supported API version by driver: %d.%d",
major_ver, minor_ver);
ret = NV_ENC_ERR_INVALID_VERSION;
for (i = 0; i < G_N_ELEMENTS (version_list); i++) {
if (version_list[i].major > major_ver ||
(version_list[i].major == major_ver
&& version_list[i].minor > minor_ver)) {
continue;
}
gst_nvenc_api_version =
GST_NVENCAPI_VERSION (version_list[i].major, version_list[i].minor);
nvenc_api.version = GST_NVENCAPI_STRUCT_VERSION (2, gst_nvenc_api_version);
ret = nvEncodeAPICreateInstance (&nvenc_api);
if (ret == NV_ENC_SUCCESS) {
GST_INFO ("Supported SDK version %d.%d",
GST_INFO ("API version %d.%d load done",
version_list[i].major, version_list[i].minor);
break;
}