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nvcodec: Report latency in decoder based on max-display-delay

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Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1633>
This commit is contained in:
Julian Bouzas 2020-10-02 10:02:38 -04:00 committed by GStreamer Merge Bot
parent 1d4b6299dc
commit 32b0afb608
2 changed files with 28 additions and 7 deletions
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34
sys/nvcodec/gstnvdec.c
View file

@ -320,6 +320,18 @@ gst_nvdec_get_max_display_delay (GstNvDec * nvdec)
(nvdec->is_live ? 0 : 4);
}
static gint64
gst_nvdec_get_latency (GstNvDec * nvdec)
{
if (!nvdec->input_state)
return 0;
return gst_util_uint64_scale_int ((nvdec->num_decode_surface +
gst_nvdec_get_max_display_delay (nvdec)) * GST_SECOND,
GST_VIDEO_INFO_FPS_D (&nvdec->input_state->info),
GST_VIDEO_INFO_FPS_N (&nvdec->input_state->info));
}
/* 0: fail, 1: succeeded, > 1: override dpb size of parser
* (set by CUVIDPARSERPARAMS::ulMaxNumDecodeSurfaces while creating parser) */
static gint CUDAAPI
@ -334,9 +346,10 @@ parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
GstCudaContext *ctx = nvdec->cuda_ctx;
GstStructure *in_s = NULL;
gboolean updata = FALSE;
gint num_decode_surface = 0;
guint major_api_ver = 0;
guint64 curr_latency, old_latency;
old_latency = gst_nvdec_get_latency (nvdec);
width = format->display_area.right - format->display_area.left;
height = format->display_area.bottom - format->display_area.top;
@ -465,17 +478,24 @@ parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
if (gst_cuvid_get_api_version (&major_api_ver, NULL) && major_api_ver >= 9) {
/* min_num_decode_surfaces was introduced in nvcodec sdk 9.0 header */
num_decode_surface = format->min_num_decode_surfaces;
nvdec->num_decode_surface = format->min_num_decode_surfaces;
GST_DEBUG_OBJECT (nvdec, "Num decode surface: %d", num_decode_surface);
GST_DEBUG_OBJECT (nvdec,
"Num decode surface: %d", nvdec->num_decode_surface);
} else {
num_decode_surface =
nvdec->num_decode_surface =
calculate_num_decode_surface (format->codec, width, height);
GST_DEBUG_OBJECT (nvdec,
"Calculated num decode surface: %d", num_decode_surface);
"Calculated num decode surface: %d", nvdec->num_decode_surface);
}
/* Update the latency if it has changed */
curr_latency = gst_nvdec_get_latency (nvdec);
if (old_latency != curr_latency)
gst_video_decoder_set_latency (GST_VIDEO_DECODER (nvdec), curr_latency,
curr_latency);
if (!nvdec->decoder || !gst_video_info_is_equal (out_info, &prev_out_info)) {
updata = TRUE;
@ -496,7 +516,7 @@ parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
GST_DEBUG_OBJECT (nvdec, "creating decoder");
create_info.ulWidth = width;
create_info.ulHeight = height;
create_info.ulNumDecodeSurfaces = num_decode_surface;
create_info.ulNumDecodeSurfaces = nvdec->num_decode_surface;
create_info.CodecType = format->codec;
create_info.ChromaFormat = format->chroma_format;
create_info.ulCreationFlags = cudaVideoCreate_Default;
@ -535,7 +555,7 @@ parser_sequence_callback (GstNvDec * nvdec, CUVIDEOFORMAT * format)
}
}
return num_decode_surface;
return nvdec->num_decode_surface;
error:
nvdec->last_ret = GST_FLOW_ERROR;

1
sys/nvcodec/gstnvdec.h
View file

@ -75,6 +75,7 @@ struct _GstNvDec
GstGLContext *other_gl_context;
#endif
guint num_decode_surface;
gint max_display_delay;
gboolean is_live;