gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstnvvp8dec.cpp

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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-nvvp8sldec
* @title: nvvp8sldec
*
* GstCodecs based NVIDIA VP8 video decoder
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=/path/to/vp8/file ! parsebin ! nvvp8sldec ! videoconvert ! autovideosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstnvvp8dec.h"
#include "gstnvdecoder.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_nv_vp8_dec_debug);
#define GST_CAT_DEFAULT gst_nv_vp8_dec_debug
typedef struct _GstNvVp8Dec
{
GstVp8Decoder parent;
GstCudaContext *context;
GstNvDecoder *decoder;
CUVIDPICPARAMS params;
guint width, height;
guint num_output_surfaces;
guint init_max_width;
guint init_max_height;
} GstNvVp8Dec;
typedef struct _GstNvVp8DecClass
{
GstVp8DecoderClass parent_class;
guint cuda_device_id;
guint max_width;
guint max_height;
} GstNvVp8DecClass;
enum
{
PROP_0,
PROP_CUDA_DEVICE_ID,
PROP_NUM_OUTPUT_SURFACES,
PROP_INIT_MAX_WIDTH,
PROP_INIT_MAX_HEIGHT,
};
#define DEFAULT_NUM_OUTPUT_SURFACES 0
static GTypeClass *parent_class = nullptr;
#define GST_NV_VP8_DEC(object) ((GstNvVp8Dec *) (object))
#define GST_NV_VP8_DEC_GET_CLASS(object) \
(G_TYPE_INSTANCE_GET_CLASS ((object),G_TYPE_FROM_INSTANCE (object),GstNvVp8DecClass))
static void gst_nv_vp8_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_nv_vp8_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_nv_vp8_dec_set_context (GstElement * element,
GstContext * context);
static gboolean gst_nv_vp8_dec_open (GstVideoDecoder * decoder);
static gboolean gst_nv_vp8_dec_close (GstVideoDecoder * decoder);
static gboolean gst_nv_vp8_dec_stop (GstVideoDecoder * decoder);
static gboolean gst_nv_vp8_dec_negotiate (GstVideoDecoder * decoder);
static gboolean gst_nv_vp8_dec_decide_allocation (GstVideoDecoder *
decoder, GstQuery * query);
static gboolean gst_nv_vp8_dec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
static gboolean gst_nv_vp8_dec_sink_event (GstVideoDecoder * decoder,
GstEvent * event);
/* GstVp8Decoder */
static GstFlowReturn gst_nv_vp8_dec_new_sequence (GstVp8Decoder * decoder,
const GstVp8FrameHdr * frame_hdr, gint max_dpb_size);
static GstFlowReturn gst_nv_vp8_dec_new_picture (GstVp8Decoder * decoder,
GstVideoCodecFrame * frame, GstVp8Picture * picture);
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,
GstNvDecoderClassData * cdata)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstVp8DecoderClass *vp8decoder_class = GST_VP8_DECODER_CLASS (klass);
object_class->set_property = gst_nv_vp8_dec_set_property;
object_class->get_property = gst_nv_vp8_dec_get_property;
/**
* GstNvVp8SLDec: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,
(GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
/**
* GstNvVp8SLDec:num-output-surfaces:
*
* The number of output surfaces (0 = auto). This property will be used to
* calculate the CUVIDDECODECREATEINFO.ulNumOutputSurfaces parameter
* in case of CUDA output mode
*
* Since: 1.24
*/
g_object_class_install_property (object_class, PROP_NUM_OUTPUT_SURFACES,
g_param_spec_uint ("num-output-surfaces", "Num Output Surfaces",
"Maximum number of output surfaces simultaneously mapped in CUDA "
"output mode (0 = auto)",
0, 64, DEFAULT_NUM_OUTPUT_SURFACES,
(GParamFlags) (GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS)));
/**
* GstNvVp8SLDec:init-max-width:
*
* Initial CUVIDDECODECREATEINFO.ulMaxWidth value
*
* Since: 1.24
*/
g_object_class_install_property (object_class, PROP_INIT_MAX_WIDTH,
g_param_spec_uint ("init-max-width", "Initial Maximum Width",
"Expected maximum coded width of stream. This value is used to "
"pre-allocate higher dimension of output surfaces than "
"that of input stream, in order to help decoder reconfiguration",
0, cdata->max_width, 0,
(GParamFlags) (GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS)));
/**
* GstNvVp8SLDec:init-max-height:
*
* Initial CUVIDDECODECREATEINFO.ulMaxHeight value
*
* Since: 1.24
*/
g_object_class_install_property (object_class, PROP_INIT_MAX_HEIGHT,
g_param_spec_uint ("init-max-height", "Initial Maximum Height",
"Expected maximum coded height of stream. This value is used to "
"pre-allocate higher dimension of output surfaces than "
"that of input stream, in order to help decoder reconfiguration",
0, cdata->max_height, 0,
(GParamFlags) (GST_PARAM_MUTABLE_READY | G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS)));
element_class->set_context = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_set_context);
parent_class = (GTypeClass *) g_type_class_peek_parent (klass);
gst_element_class_set_metadata (element_class,
"NVDEC VP8 Decoder",
"Codec/Decoder/Video/Hardware",
"NVIDIA VP8 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_vp8_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_close);
decoder_class->stop = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_stop);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_decide_allocation);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_src_query);
decoder_class->sink_event = GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_sink_event);
vp8decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_new_sequence);
vp8decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_nv_vp8_dec_new_picture);
vp8decoder_class->decode_picture =
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);
klass->cuda_device_id = cdata->cuda_device_id;
klass->max_width = cdata->max_width;
klass->max_height = cdata->max_height;
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata);
}
static void
gst_nv_vp8_dec_init (GstNvVp8Dec * self)
{
self->num_output_surfaces = DEFAULT_NUM_OUTPUT_SURFACES;
}
static void
gst_nv_vp8_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (object);
switch (prop_id) {
case PROP_NUM_OUTPUT_SURFACES:
self->num_output_surfaces = g_value_get_uint (value);
break;
case PROP_INIT_MAX_WIDTH:
self->init_max_width = g_value_get_uint (value);
break;
case PROP_INIT_MAX_HEIGHT:
self->init_max_height = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nv_vp8_dec_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (object);
GstNvVp8DecClass *klass = GST_NV_VP8_DEC_GET_CLASS (object);
switch (prop_id) {
case PROP_CUDA_DEVICE_ID:
g_value_set_uint (value, klass->cuda_device_id);
break;
case PROP_NUM_OUTPUT_SURFACES:
g_value_set_uint (value, self->num_output_surfaces);
break;
case PROP_INIT_MAX_WIDTH:
g_value_set_uint (value, self->init_max_width);
break;
case PROP_INIT_MAX_HEIGHT:
g_value_set_uint (value, self->init_max_height);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_nv_vp8_dec_set_context (GstElement * element, GstContext * context)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (element);
GstNvVp8DecClass *klass = GST_NV_VP8_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_vp8_dec_open (GstVideoDecoder * decoder)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstNvVp8DecClass *klass = GST_NV_VP8_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;
}
return TRUE;
}
static gboolean
gst_nv_vp8_dec_close (GstVideoDecoder * decoder)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
gst_clear_object (&self->decoder);
gst_clear_object (&self->context);
return TRUE;
}
static gboolean
gst_nv_vp8_dec_stop (GstVideoDecoder * decoder)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
gboolean ret;
ret = GST_VIDEO_DECODER_CLASS (parent_class)->stop (decoder);
if (self->decoder)
gst_nv_decoder_reset (self->decoder);
return ret;
}
static gboolean
gst_nv_vp8_dec_negotiate (GstVideoDecoder * decoder)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstVp8Decoder *vp8dec = GST_VP8_DECODER (decoder);
GST_DEBUG_OBJECT (self, "negotiate");
gst_nv_decoder_negotiate (self->decoder, decoder, vp8dec->input_state);
/* TODO: add support D3D11 memory */
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
static gboolean
gst_nv_vp8_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvVp8Dec *self = GST_NV_VP8_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_vp8_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvVp8Dec *self = GST_NV_VP8_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 gboolean
gst_nv_vp8_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
if (!self->decoder)
goto done;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
gst_nv_decoder_set_flushing (self->decoder, TRUE);
break;
case GST_EVENT_FLUSH_STOP:
gst_nv_decoder_set_flushing (self->decoder, FALSE);
break;
default:
break;
}
done:
return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event);
}
static GstFlowReturn
gst_nv_vp8_dec_new_sequence (GstVp8Decoder * decoder,
const GstVp8FrameHdr * frame_hdr, gint max_dpb_size)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstNvVp8DecClass *klass = GST_NV_VP8_DEC_GET_CLASS (self);
gboolean modified = FALSE;
guint max_width, max_height;
GST_LOG_OBJECT (self, "new sequence");
if (self->width != frame_hdr->width || self->height != frame_hdr->height) {
if (self->decoder) {
GST_INFO_OBJECT (self, "resolution changed %dx%d -> %dx%d",
self->width, self->height, frame_hdr->width, frame_hdr->height);
}
self->width = frame_hdr->width;
self->height = frame_hdr->height;
modified = TRUE;
}
if (modified || !gst_nv_decoder_is_configured (self->decoder)) {
GstVideoInfo info;
gst_video_info_set_format (&info,
GST_VIDEO_FORMAT_NV12, GST_ROUND_UP_2 (self->width),
GST_ROUND_UP_2 (self->height));
max_width = gst_nv_decoder_get_max_output_size (self->width,
self->init_max_width, klass->max_width);
max_height = gst_nv_decoder_get_max_output_size (self->height,
self->init_max_height, klass->max_height);
if (!gst_nv_decoder_configure (self->decoder,
cudaVideoCodec_VP8, &info, self->width, self->height, 8,
max_dpb_size, FALSE, self->num_output_surfaces, max_width,
max_height)) {
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.PicWidthInMbs = GST_ROUND_UP_16 (self->width) >> 4;
self->params.FrameHeightInMbs = GST_ROUND_UP_16 (self->height) >> 4;
self->params.CodecSpecific.vp8.width = self->width;
self->params.CodecSpecific.vp8.height = self->height;
}
return GST_FLOW_OK;
}
static GstFlowReturn
gst_nv_vp8_dec_new_picture (GstVp8Decoder * decoder,
GstVideoCodecFrame * frame, GstVp8Picture * picture)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstNvDecSurface *surface;
GstFlowReturn ret;
ret = gst_nv_decoder_acquire_surface (self->decoder, &surface);
if (ret != GST_FLOW_OK)
return ret;
GST_LOG_OBJECT (self,
"New decoder frame %p (index %d)", surface, surface->index);
gst_vp8_picture_set_user_data (picture,
surface, (GDestroyNotify) gst_nv_dec_surface_unref);
return GST_FLOW_OK;
}
static GstNvDecSurface *
gst_nv_vp8_dec_get_decoder_frame_from_picture (GstNvVp8Dec * self,
GstVp8Picture * picture)
{
GstNvDecSurface *surface;
surface = (GstNvDecSurface *) gst_vp8_picture_get_user_data (picture);
if (!surface)
GST_DEBUG_OBJECT (self, "current picture does not have decoder surface");
return surface;
}
static GstFlowReturn
gst_nv_vp8_dec_decode_picture (GstVp8Decoder * decoder,
GstVp8Picture * picture, GstVp8Parser * parser)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstVp8FrameHdr *frame_hdr = &picture->frame_hdr;
GstNvDecSurface *surface;
GstNvDecSurface *other_surface;
guint offset = 0;
GST_LOG_OBJECT (self, "Decode picture, size %" G_GSIZE_FORMAT, picture->size);
surface = gst_nv_vp8_dec_get_decoder_frame_from_picture (self, picture);
if (!surface) {
GST_ERROR_OBJECT (self, "Decoder frame is unavailable");
return GST_FLOW_ERROR;
}
self->params.nBitstreamDataLen = picture->size;
self->params.pBitstreamData = picture->data;
self->params.nNumSlices = 1;
self->params.pSliceDataOffsets = &offset;
self->params.CurrPicIdx = surface->index;
self->params.CodecSpecific.vp8.first_partition_size =
frame_hdr->first_part_size;
if (decoder->alt_ref_picture) {
other_surface =
gst_nv_vp8_dec_get_decoder_frame_from_picture (self,
decoder->alt_ref_picture);
if (!other_surface) {
GST_ERROR_OBJECT (self, "Couldn't get decoder frame for AltRef");
return GST_FLOW_ERROR;
}
self->params.CodecSpecific.vp8.AltRefIdx = other_surface->index;
} else {
self->params.CodecSpecific.vp8.AltRefIdx = 0xff;
}
if (decoder->golden_ref_picture) {
other_surface =
gst_nv_vp8_dec_get_decoder_frame_from_picture (self,
decoder->golden_ref_picture);
if (!other_surface) {
GST_ERROR_OBJECT (self, "Couldn't get decoder frame for GoldenRef");
return GST_FLOW_ERROR;
}
self->params.CodecSpecific.vp8.GoldenRefIdx = other_surface->index;
} else {
self->params.CodecSpecific.vp8.GoldenRefIdx = 0xff;
}
if (decoder->last_picture) {
other_surface =
gst_nv_vp8_dec_get_decoder_frame_from_picture (self,
decoder->last_picture);
if (!other_surface) {
GST_ERROR_OBJECT (self, "Couldn't get decoder frame for LastRef");
return GST_FLOW_ERROR;
}
self->params.CodecSpecific.vp8.LastRefIdx = other_surface->index;
} else {
self->params.CodecSpecific.vp8.LastRefIdx = 0xff;
}
self->params.CodecSpecific.vp8.vp8_frame_tag.frame_type =
frame_hdr->key_frame ? 0 : 1;
self->params.CodecSpecific.vp8.vp8_frame_tag.version = frame_hdr->version;
self->params.CodecSpecific.vp8.vp8_frame_tag.show_frame =
frame_hdr->show_frame;
self->params.CodecSpecific.vp8.vp8_frame_tag.update_mb_segmentation_data =
parser->segmentation.segmentation_enabled ?
parser->segmentation.update_segment_feature_data : 0;
if (!gst_nv_decoder_decode (self->decoder, &self->params))
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_nv_vp8_dec_output_picture (GstVp8Decoder * decoder,
GstVideoCodecFrame * frame, GstVp8Picture * picture)
{
GstNvVp8Dec *self = GST_NV_VP8_DEC (decoder);
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstNvDecSurface *surface;
GstFlowReturn ret = GST_FLOW_ERROR;
GST_LOG_OBJECT (self, "Outputting picture %p", picture);
surface = (GstNvDecSurface *) gst_vp8_picture_get_user_data (picture);
if (!surface) {
GST_ERROR_OBJECT (self, "No decoder frame in picture %p", picture);
goto error;
}
ret = gst_nv_decoder_finish_surface (self->decoder,
vdec, picture->discont_state, surface, &frame->output_buffer);
if (ret != GST_FLOW_OK)
goto error;
gst_vp8_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_video_decoder_drop_frame (vdec, frame);
gst_vp8_picture_unref (picture);
return ret;
}
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;
return 2;
}
void
gst_nv_vp8_dec_register (GstPlugin * plugin, guint device_id, guint rank,
GstCaps * sink_caps, GstCaps * src_caps)
{
GType type;
gchar *type_name;
gchar *feature_name;
GstNvDecoderClassData *cdata;
gint index = 0;
const GValue *value;
GstStructure *s;
GTypeInfo type_info = {
sizeof (GstNvVp8DecClass),
nullptr,
nullptr,
(GClassInitFunc) gst_nv_vp8_dec_class_init,
nullptr,
nullptr,
sizeof (GstNvVp8Dec),
0,
(GInstanceInitFunc) gst_nv_vp8_dec_init,
};
GST_DEBUG_CATEGORY_INIT (gst_nv_vp8_dec_debug, "nvvp8dec", 0, "nvvp8dec");
cdata = g_new0 (GstNvDecoderClassData, 1);
s = gst_caps_get_structure (sink_caps, 0);
value = gst_structure_get_value (s, "width");
cdata->max_width = (guint) gst_value_get_int_range_max (value);
value = gst_structure_get_value (s, "height");
cdata->max_height = (guint) gst_value_get_int_range_max (value);
cdata->sink_caps = gst_caps_ref (sink_caps);
cdata->src_caps = gst_caps_ref (src_caps);
cdata->cuda_device_id = device_id;
type_name = g_strdup ("GstNvVp8Dec");
feature_name = g_strdup ("nvvp8dec");
while (g_type_from_name (type_name)) {
index++;
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstNvVp8Device%dDec", index);
feature_name = g_strdup_printf ("nvvp8device%ddec", index);
}
type_info.class_data = cdata;
type = g_type_register_static (GST_TYPE_VP8_DECODER,
type_name, &type_info, (GTypeFlags) 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);
}