gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstnvvp9dec.c

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/* GStreamer
* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-nvvp9sldec
* @title: nvvp9sldec
*
* GstCodecs based NVIDIA VP9 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/vp9/file ! parsebin ! nvvp9sldec ! videoconvert ! autovideosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/cuda/gstcudautils.h>
#include "gstnvvp9dec.h"
#include "gstnvdecoder.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_nv_vp9_dec_debug);
#define GST_CAT_DEFAULT gst_nv_vp9_dec_debug
typedef struct _GstNvVp9Dec
{
GstVp9Decoder parent;
GstVideoCodecState *output_state;
GstCudaContext *context;
GstNvDecoder *decoder;
CUVIDPICPARAMS params;
guint width, height;
GstVP9Profile profile;
} GstNvVp9Dec;
typedef struct _GstNvVp9DecClass
{
GstVp9DecoderClass parent_class;
guint cuda_device_id;
} GstNvVp9DecClass;
enum
{
PROP_0,
PROP_CUDA_DEVICE_ID,
};
static GTypeClass *parent_class = NULL;
#define GST_NV_VP9_DEC(object) ((GstNvVp9Dec *) (object))
#define GST_NV_VP9_DEC_GET_CLASS(object) \
(G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstNvVp9DecClass))
static void gst_nv_vp9_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_nv_vp9_dec_set_context (GstElement * element,
GstContext * context);
static gboolean gst_nv_vp9_dec_open (GstVideoDecoder * decoder);
static gboolean gst_nv_vp9_dec_close (GstVideoDecoder * decoder);
static gboolean gst_nv_vp9_dec_negotiate (GstVideoDecoder * decoder);
static gboolean gst_nv_vp9_dec_decide_allocation (GstVideoDecoder *
decoder, GstQuery * query);
static gboolean gst_nv_vp9_dec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
/* GstVp9Decoder */
static GstFlowReturn gst_nv_vp9_dec_new_sequence (GstVp9Decoder * decoder,
const GstVp9FrameHeader * frame_hdr, gint max_dpb_size);
static GstFlowReturn gst_nv_vp9_dec_new_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture);
static GstVp9Picture *gst_nv_vp9_dec_duplicate_picture (GstVp9Decoder *
decoder, GstVideoCodecFrame * frame, GstVp9Picture * picture);
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,
GstNvDecoderClassData * cdata)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstVp9DecoderClass *vp9decoder_class = GST_VP9_DECODER_CLASS (klass);
object_class->get_property = gst_nv_vp9_dec_get_property;
/**
* GstNvVp9SLDec:cuda-device-id:
*
* Assigned CUDA device id
*
* Since: 1.22
*/
g_object_class_install_property (object_class, PROP_CUDA_DEVICE_ID,
g_param_spec_uint ("cuda-device-id", "CUDA device id",
"Assigned CUDA device id", 0, G_MAXINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
element_class->set_context = GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_set_context);
parent_class = (GTypeClass *) g_type_class_peek_parent (klass);
gst_element_class_set_metadata (element_class,
"NVDEC VP9 Stateless Decoder",
"Codec/Decoder/Video/Hardware",
"NVIDIA VP9 video decoder", "Seungha Yang <seungha@centricular.com>");
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
cdata->sink_caps));
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
cdata->src_caps));
decoder_class->open = GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_close);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_decide_allocation);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_src_query);
vp9decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_new_sequence);
vp9decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_new_picture);
vp9decoder_class->duplicate_picture =
GST_DEBUG_FUNCPTR (gst_nv_vp9_dec_duplicate_picture);
vp9decoder_class->decode_picture =
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);
klass->cuda_device_id = cdata->cuda_device_id;
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata);
}
static void
gst_nv_vp9_dec_init (GstNvVp9Dec * self)
{
}
static void
gst_nv_vp9_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstNvVp9DecClass *klass = GST_NV_VP9_DEC_GET_CLASS (object);
switch (prop_id) {
case PROP_CUDA_DEVICE_ID:
g_value_set_uint (value, klass->cuda_device_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nv_vp9_dec_set_context (GstElement * element, GstContext * context)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (element);
GstNvVp9DecClass *klass = GST_NV_VP9_DEC_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "set context %s",
gst_context_get_context_type (context));
if (gst_cuda_handle_set_context (element, context, klass->cuda_device_id,
&self->context)) {
goto done;
}
if (self->decoder)
gst_nv_decoder_handle_set_context (self->decoder, element, context);
done:
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_nv_vp9_dec_open (GstVideoDecoder * decoder)
{
GstVp9Decoder *vp9dec = GST_VP9_DECODER (decoder);
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstNvVp9DecClass *klass = GST_NV_VP9_DEC_GET_CLASS (self);
if (!gst_cuda_ensure_element_context (GST_ELEMENT (self),
klass->cuda_device_id, &self->context)) {
GST_ERROR_OBJECT (self, "Required element data is unavailable");
return FALSE;
}
self->decoder = gst_nv_decoder_new (self->context);
if (!self->decoder) {
GST_ERROR_OBJECT (self, "Failed to create decoder object");
gst_clear_object (&self->context);
return FALSE;
}
/* NVDEC doesn't support non-keyframe resolution change and it will result
* in outputting broken frames */
gst_vp9_decoder_set_non_keyframe_format_change_support (vp9dec, FALSE);
return TRUE;
}
static gboolean
gst_nv_vp9_dec_close (GstVideoDecoder * decoder)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
g_clear_pointer (&self->output_state, gst_video_codec_state_unref);
gst_clear_object (&self->decoder);
gst_clear_object (&self->context);
return TRUE;
}
static gboolean
gst_nv_vp9_dec_negotiate (GstVideoDecoder * decoder)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstVp9Decoder *vp9dec = GST_VP9_DECODER (decoder);
GST_DEBUG_OBJECT (self, "negotiate");
gst_nv_decoder_negotiate (self->decoder, decoder, vp9dec->input_state,
&self->output_state);
/* TODO: add support D3D11 memory */
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
static gboolean
gst_nv_vp9_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
if (!gst_nv_decoder_decide_allocation (self->decoder, decoder, query)) {
GST_WARNING_OBJECT (self, "Failed to handle decide allocation");
return FALSE;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
static gboolean
gst_nv_vp9_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_cuda_handle_context_query (GST_ELEMENT (decoder), query,
self->context)) {
return TRUE;
} else if (self->decoder &&
gst_nv_decoder_handle_context_query (self->decoder, decoder, query)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
}
static GstFlowReturn
gst_nv_vp9_dec_new_sequence (GstVp9Decoder * decoder,
const GstVp9FrameHeader * frame_hdr, gint max_dpb_size)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstVideoFormat out_format = GST_VIDEO_FORMAT_UNKNOWN;
GstVideoInfo info;
GST_LOG_OBJECT (self, "new sequence");
self->width = frame_hdr->width;
self->height = frame_hdr->height;
self->profile = frame_hdr->profile;
if (self->profile == GST_VP9_PROFILE_0) {
out_format = GST_VIDEO_FORMAT_NV12;
} else if (self->profile == GST_VP9_PROFILE_2) {
if (frame_hdr->bit_depth == 10) {
out_format = GST_VIDEO_FORMAT_P010_10LE;
} else {
out_format = GST_VIDEO_FORMAT_P016_LE;
}
}
if (out_format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (self, "Could not support profile %d", self->profile);
return GST_FLOW_NOT_NEGOTIATED;
}
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,
frame_hdr->bit_depth, max_dpb_size, FALSE)) {
GST_ERROR_OBJECT (self, "Failed to configure decoder");
return GST_FLOW_NOT_NEGOTIATED;
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return GST_FLOW_NOT_NEGOTIATED;
}
memset (&self->params, 0, sizeof (CUVIDPICPARAMS));
self->params.CodecSpecific.vp9.colorSpace = frame_hdr->color_space;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_nv_vp9_dec_new_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstNvDecoderFrame *nv_frame;
nv_frame = gst_nv_decoder_new_frame (self->decoder);
if (!nv_frame) {
GST_ERROR_OBJECT (self, "No available decoder frame");
return GST_FLOW_ERROR;
}
GST_LOG_OBJECT (self,
"New decoder frame %p (index %d)", nv_frame, nv_frame->index);
gst_vp9_picture_set_user_data (picture,
nv_frame, (GDestroyNotify) gst_nv_decoder_frame_unref);
return GST_FLOW_OK;
}
static GstNvDecoderFrame *
gst_nv_vp9_dec_get_decoder_frame_from_picture (GstNvVp9Dec * self,
GstVp9Picture * picture)
{
GstNvDecoderFrame *frame;
frame = (GstNvDecoderFrame *) gst_vp9_picture_get_user_data (picture);
if (!frame)
GST_DEBUG_OBJECT (self, "current picture does not have decoder frame");
return frame;
}
static GstVp9Picture *
gst_nv_vp9_dec_duplicate_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstNvDecoderFrame *nv_frame;
GstVp9Picture *new_picture;
nv_frame = gst_nv_vp9_dec_get_decoder_frame_from_picture (self, picture);
if (!nv_frame) {
GST_ERROR_OBJECT (self, "Parent picture does not have decoder frame");
return NULL;
}
new_picture = gst_vp9_picture_new ();
new_picture->frame_hdr = picture->frame_hdr;
gst_vp9_picture_set_user_data (new_picture,
gst_nv_decoder_frame_ref (nv_frame),
(GDestroyNotify) gst_nv_decoder_frame_unref);
return new_picture;
}
static GstFlowReturn
gst_nv_vp9_dec_decode_picture (GstVp9Decoder * decoder,
GstVp9Picture * picture, GstVp9Dpb * dpb)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
const GstVp9FrameHeader *frame_hdr = &picture->frame_hdr;
const GstVp9LoopFilterParams *lfp = &frame_hdr->loop_filter_params;
const GstVp9SegmentationParams *sp = &frame_hdr->segmentation_params;
const GstVp9QuantizationParams *qp = &frame_hdr->quantization_params;
CUVIDPICPARAMS *params = &self->params;
CUVIDVP9PICPARAMS *vp9_params = &params->CodecSpecific.vp9;
GstNvDecoderFrame *frame;
GstNvDecoderFrame *other_frame;
guint offset = 0;
guint8 ref_frame_map[GST_VP9_REF_FRAMES];
gint i;
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->mbRefLfDelta) ==
GST_VP9_MAX_REF_LF_DELTAS);
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->mbModeLfDelta) ==
GST_VP9_MAX_MODE_LF_DELTAS);
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->mb_segment_tree_probs) ==
GST_VP9_SEG_TREE_PROBS);
G_STATIC_ASSERT (sizeof (vp9_params->mb_segment_tree_probs) ==
sizeof (sp->segmentation_tree_probs));
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->segment_pred_probs) ==
GST_VP9_PREDICTION_PROBS);
G_STATIC_ASSERT (sizeof (vp9_params->segment_pred_probs) ==
sizeof (sp->segmentation_pred_prob));
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->refFrameSignBias) ==
GST_VP9_REFS_PER_FRAME + 1);
G_STATIC_ASSERT (sizeof (vp9_params->refFrameSignBias) ==
sizeof (frame_hdr->ref_frame_sign_bias));
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->activeRefIdx) ==
GST_VP9_REFS_PER_FRAME);
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->segmentFeatureEnable) ==
GST_VP9_MAX_SEGMENTS);
G_STATIC_ASSERT (sizeof (vp9_params->segmentFeatureEnable) ==
sizeof (sp->feature_enabled));
G_STATIC_ASSERT (G_N_ELEMENTS (vp9_params->segmentFeatureData) ==
GST_VP9_MAX_SEGMENTS);
G_STATIC_ASSERT (sizeof (vp9_params->segmentFeatureData) ==
sizeof (sp->feature_data));
GST_LOG_OBJECT (self, "Decode picture, size %" G_GSIZE_FORMAT, picture->size);
frame = gst_nv_vp9_dec_get_decoder_frame_from_picture (self, picture);
if (!frame) {
GST_ERROR_OBJECT (self, "Decoder frame is unavailable");
return GST_FLOW_ERROR;
}
params->nBitstreamDataLen = picture->size;
params->pBitstreamData = picture->data;
params->nNumSlices = 1;
params->pSliceDataOffsets = &offset;
params->PicWidthInMbs = GST_ROUND_UP_16 (frame_hdr->width) >> 4;
params->FrameHeightInMbs = GST_ROUND_UP_16 (frame_hdr->height) >> 4;
params->CurrPicIdx = frame->index;
vp9_params->width = frame_hdr->width;
vp9_params->height = frame_hdr->height;
for (i = 0; i < GST_VP9_REF_FRAMES; i++) {
if (dpb->pic_list[i]) {
other_frame = gst_nv_vp9_dec_get_decoder_frame_from_picture (self,
dpb->pic_list[i]);
if (!other_frame) {
GST_ERROR_OBJECT (self, "Couldn't get decoder frame from picture");
return FALSE;
}
ref_frame_map[i] = other_frame->index;
} else {
ref_frame_map[i] = 0xff;
}
}
vp9_params->LastRefIdx = ref_frame_map[frame_hdr->ref_frame_idx[0]];
vp9_params->GoldenRefIdx = ref_frame_map[frame_hdr->ref_frame_idx[1]];
vp9_params->AltRefIdx = ref_frame_map[frame_hdr->ref_frame_idx[2]];
vp9_params->profile = frame_hdr->profile;
vp9_params->frameContextIdx = frame_hdr->frame_context_idx;
vp9_params->frameType = frame_hdr->frame_type;
vp9_params->showFrame = frame_hdr->show_frame;
vp9_params->errorResilient = frame_hdr->error_resilient_mode;
vp9_params->frameParallelDecoding = frame_hdr->frame_parallel_decoding_mode;
vp9_params->subSamplingX = frame_hdr->subsampling_x;
vp9_params->subSamplingY = frame_hdr->subsampling_y;
vp9_params->intraOnly = frame_hdr->intra_only;
vp9_params->allow_high_precision_mv = frame_hdr->allow_high_precision_mv;
vp9_params->refreshEntropyProbs = frame_hdr->refresh_frame_context;
vp9_params->bitDepthMinus8Luma = frame_hdr->bit_depth - 8;
vp9_params->bitDepthMinus8Chroma = frame_hdr->bit_depth - 8;
vp9_params->loopFilterLevel = lfp->loop_filter_level;
vp9_params->loopFilterSharpness = lfp->loop_filter_sharpness;
vp9_params->modeRefLfEnabled = lfp->loop_filter_delta_enabled;
vp9_params->log2_tile_columns = frame_hdr->tile_cols_log2;
vp9_params->log2_tile_rows = frame_hdr->tile_rows_log2;
vp9_params->segmentEnabled = sp->segmentation_enabled;
vp9_params->segmentMapUpdate = sp->segmentation_update_map;
vp9_params->segmentMapTemporalUpdate = sp->segmentation_temporal_update;
vp9_params->segmentFeatureMode = sp->segmentation_abs_or_delta_update;
vp9_params->qpYAc = qp->base_q_idx;
vp9_params->qpYDc = qp->delta_q_y_dc;
vp9_params->qpChDc = qp->delta_q_uv_dc;
vp9_params->qpChAc = qp->delta_q_uv_ac;
vp9_params->resetFrameContext = frame_hdr->reset_frame_context;
vp9_params->mcomp_filter_type = frame_hdr->interpolation_filter;
vp9_params->frameTagSize = frame_hdr->frame_header_length_in_bytes;
vp9_params->offsetToDctParts = frame_hdr->header_size_in_bytes;
for (i = 0; i < GST_VP9_MAX_REF_LF_DELTAS; i++)
vp9_params->mbRefLfDelta[i] = lfp->loop_filter_ref_deltas[i];
for (i = 0; i < GST_VP9_MAX_MODE_LF_DELTAS; i++)
vp9_params->mbModeLfDelta[i] = lfp->loop_filter_mode_deltas[i];
memcpy (vp9_params->mb_segment_tree_probs, sp->segmentation_tree_probs,
sizeof (sp->segmentation_tree_probs));
memcpy (vp9_params->segment_pred_probs, sp->segmentation_pred_prob,
sizeof (sp->segmentation_pred_prob));
memcpy (vp9_params->refFrameSignBias, frame_hdr->ref_frame_sign_bias,
sizeof (frame_hdr->ref_frame_sign_bias));
for (i = 0; i < GST_VP9_REFS_PER_FRAME; i++) {
vp9_params->activeRefIdx[i] = frame_hdr->ref_frame_idx[i];
}
memcpy (vp9_params->segmentFeatureEnable, sp->feature_enabled,
sizeof (sp->feature_enabled));
memcpy (vp9_params->segmentFeatureData, sp->feature_data,
sizeof (sp->feature_data));
if (!gst_nv_decoder_decode_picture (self->decoder, &self->params))
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_nv_vp9_dec_output_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstNvVp9Dec *self = GST_NV_VP9_DEC (decoder);
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstNvDecoderFrame *decoder_frame;
GST_LOG_OBJECT (self, "Outputting picture %p", picture);
decoder_frame = (GstNvDecoderFrame *) gst_vp9_picture_get_user_data (picture);
if (!decoder_frame) {
GST_ERROR_OBJECT (self, "No decoder frame in picture %p", picture);
goto error;
}
if (!gst_nv_decoder_finish_frame (self->decoder, vdec, decoder_frame,
&frame->output_buffer)) {
GST_ERROR_OBJECT (self, "Failed to handle output picture");
goto error;
}
gst_vp9_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_video_decoder_drop_frame (vdec, frame);
gst_vp9_picture_unref (picture);
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;
}
void
gst_nv_vp9_dec_register (GstPlugin * plugin, guint device_id, guint rank,
GstCaps * sink_caps, GstCaps * src_caps, gboolean is_primary)
{
GType type;
gchar *type_name;
gchar *feature_name;
GstNvDecoderClassData *cdata;
gint index = 0;
GTypeInfo type_info = {
sizeof (GstNvVp9DecClass),
NULL,
NULL,
(GClassInitFunc) gst_nv_vp9_dec_class_init,
NULL,
NULL,
sizeof (GstNvVp9Dec),
0,
(GInstanceInitFunc) gst_nv_vp9_dec_init,
};
GST_DEBUG_CATEGORY_INIT (gst_nv_vp9_dec_debug, "nvvp9dec", 0, "nvvp9dec");
cdata = g_new0 (GstNvDecoderClassData, 1);
cdata->sink_caps = gst_caps_copy (sink_caps);
gst_caps_set_simple (cdata->sink_caps,
"alignment", G_TYPE_STRING, "frame", NULL);
GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
cdata->src_caps = gst_caps_ref (src_caps);
cdata->cuda_device_id = device_id;
if (is_primary) {
type_name = g_strdup ("GstNvVp9Dec");
feature_name = g_strdup ("nvvp9dec");
} else {
type_name = g_strdup ("GstNvVp9SLDec");
feature_name = g_strdup ("nvvp9sldec");
}
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
if (is_primary) {
type_name = g_strdup_printf ("GstNvVp9Device%dDec", index);
feature_name = g_strdup_printf ("nvvp9device%ddec", index);
} else {
type_name = g_strdup_printf ("GstNvVp9SLDevice%dDec", index);
feature_name = g_strdup_printf ("nvvp9sldevice%ddec", index);
}
}
type_info.class_data = cdata;
type = g_type_register_static (GST_TYPE_VP9_DECODER,
type_name, &type_info, 0);
/* make lower rank than default device */
if (rank > 0 && index > 0)
rank--;
if (!gst_element_register (plugin, feature_name, rank, type))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
g_free (feature_name);
}