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nvcodec: nv{vp8,vp9}sldec: Implement get_preferred_output_delay()

Browse source 
Equivalent to that of nvh264sldec. Use render delay in case of non-live
pipeline for the better throughput performance.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/987>
This commit is contained in:
Seungha Yang 2021-10-01 00:27:42 +09:00 committed by GStreamer Marge Bot
parent aab3ea2736
commit 834d6f4031
2 changed files with 35 additions and 1 deletions
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19
subprojects/gst-plugins-bad/sys/nvcodec/gstnvvp8dec.c
View file

@ -80,6 +80,8 @@ static GstFlowReturn gst_nv_vp8_dec_decode_picture (GstVp8Decoder * decoder,
GstVp8Picture * picture, GstVp8Parser * parser);
static GstFlowReturn gst_nv_vp8_dec_output_picture (GstVp8Decoder *
decoder, GstVideoCodecFrame * frame, GstVp8Picture * picture);
static guint gst_nv_vp8_dec_get_preferred_output_delay (GstVp8Decoder * decoder,
gboolean is_live);
static void
gst_nv_vp8_dec_class_init (GstNvVp8DecClass * klass)
@ -105,6 +107,8 @@ gst_nv_vp8_dec_class_init (GstNvVp8DecClass * klass)
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_decode_picture);
vp8decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_output_picture);
vp8decoder_class->get_preferred_output_delay =
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_get_preferred_output_delay);
GST_DEBUG_CATEGORY_INIT (gst_nv_vp8_dec_debug,
"nvvp8dec", 0, "NVIDIA VP8 Decoder");
@ -254,7 +258,8 @@ gst_nv_vp8_dec_new_sequence (GstVp8Decoder * decoder,
if (!gst_nv_decoder_configure (self->decoder,
cudaVideoCodec_VP8, &info, self->width, self->height,
NUM_OUTPUT_VIEW)) {
/* +4 for render delay */
NUM_OUTPUT_VIEW + 4)) {
GST_ERROR_OBJECT (self, "Failed to configure decoder");
return GST_FLOW_NOT_NEGOTIATED;
}
@ -430,6 +435,18 @@ error:
return GST_FLOW_ERROR;
}
static guint
gst_nv_vp8_dec_get_preferred_output_delay (GstVp8Decoder * decoder,
gboolean is_live)
{
/* Prefer to zero latency for live pipeline */
if (is_live)
return 0;
/* NVCODEC SDK uses 4 frame delay for better throughput performance */
return 4;
}
typedef struct
{
GstCaps *sink_caps;

17
subprojects/gst-plugins-bad/sys/nvcodec/gstnvvp9dec.c
View file

@ -83,6 +83,8 @@ static GstFlowReturn gst_nv_vp9_dec_decode_picture (GstVp9Decoder * decoder,
GstVp9Picture * picture, GstVp9Dpb * dpb);
static GstFlowReturn gst_nv_vp9_dec_output_picture (GstVp9Decoder *
decoder, GstVideoCodecFrame * frame, GstVp9Picture * picture);
static guint gst_nv_vp9_dec_get_preferred_output_delay (GstVp9Decoder * decoder,
gboolean is_live);
static void
gst_nv_vp9_dec_class_init (GstNvVp9DecClass * klass)
@ -110,6 +112,8 @@ gst_nv_vp9_dec_class_init (GstNvVp9DecClass * klass)
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_decode_picture);
vp9decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_output_picture);
vp9decoder_class->get_preferred_output_delay =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_get_preferred_output_delay);
GST_DEBUG_CATEGORY_INIT (gst_nv_vp9_dec_debug,
"nvvp9dec", 0, "NVIDIA VP9 Decoder");
@ -260,6 +264,7 @@ gst_nv_vp9_dec_new_sequence (GstVp9Decoder * decoder,
gst_video_info_set_format (&info, out_format, self->width, self->height);
if (!gst_nv_decoder_configure (self->decoder,
cudaVideoCodec_VP9, &info, self->width, self->height,
/* +4 for render delay */
NUM_OUTPUT_VIEW)) {
GST_ERROR_OBJECT (self, "Failed to configure decoder");
return GST_FLOW_NOT_NEGOTIATED;
@ -518,6 +523,18 @@ error:
return GST_FLOW_ERROR;
}
static guint
gst_nv_vp9_dec_get_preferred_output_delay (GstVp9Decoder * decoder,
gboolean is_live)
{
/* Prefer to zero latency for live pipeline */
if (is_live)
return 0;
/* NVCODEC SDK uses 4 frame delay for better throughput performance */
return 4;
}
typedef struct
{
GstCaps *sink_caps;