gstreamer/sys/va/gstvavp9dec.c

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/* GStreamer
* Copyright (C) 2020 Igalia, S.L.
* Author: Víctor Jáquez <vjaquez@igalia.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 the0
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-vavp9dec
* @title: vavp9dec
* @short_description: A VA-API based VP9 video decoder
*
* vavp9dec decodes VP9 bitstreams to VA surfaces using the
* installed and chosen [VA-API](https://01.org/linuxmedia/vaapi)
* driver.
*
* The decoding surfaces can be mapped onto main memory as video
* frames.
*
* ## Example launch line
* ```
* gst-launch-1.0 filesrc location=sample.webm ! parsebin ! vavp9dec ! autovideosink
* ```
*
* Since: 1.20
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvavp9dec.h"
#include "gstvabasedec.h"
GST_DEBUG_CATEGORY_STATIC (gst_va_vp9dec_debug);
#ifndef GST_DISABLE_GST_DEBUG
#define GST_CAT_DEFAULT gst_va_vp9dec_debug
#else
#define GST_CAT_DEFAULT NULL
#endif
#define GST_VA_VP9_DEC(obj) ((GstVaVp9Dec *) obj)
#define GST_VA_VP9_DEC_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), G_TYPE_FROM_INSTANCE (obj), GstVaVp9DecClass))
#define GST_VA_VP9_DEC_CLASS(klass) ((GstVaVp9DecClass *) klass)
typedef struct _GstVaVp9Dec GstVaVp9Dec;
typedef struct _GstVaVp9DecClass GstVaVp9DecClass;
struct _GstVaVp9DecClass
{
GstVaBaseDecClass parent_class;
};
struct _GstVaVp9Dec
{
GstVaBaseDec parent;
GstVp9Segmentation segmentation[GST_VP9_MAX_SEGMENTS];
gboolean need_negotiation;
};
/* *INDENT-OFF* */
static const gchar *src_caps_str = GST_VIDEO_CAPS_MAKE_WITH_FEATURES ("memory:VAMemory",
"{ NV12 }") " ;" GST_VIDEO_CAPS_MAKE ("{ NV12 }");
/* *INDENT-ON* */
static const gchar *sink_caps_str = "video/x-vp9";
static guint
_get_rtformat (GstVaVp9Dec * self, GstVP9Profile profile,
GstVp9BitDepth bit_depth, gint subsampling_x, gint subsampling_y)
{
switch (profile) {
case GST_VP9_PROFILE_0:
return VA_RT_FORMAT_YUV420;
case GST_VP9_PROFILE_1:
if (subsampling_x == 1 && subsampling_y == 0)
return VA_RT_FORMAT_YUV422;
else if (subsampling_x == 0 && subsampling_y == 0)
return VA_RT_FORMAT_YUV444;
break;
case GST_VP9_PROFILE_2:
if (bit_depth == GST_VP9_BIT_DEPTH_10)
return VA_RT_FORMAT_YUV420_10;
else if (bit_depth == GST_VP9_BIT_DEPTH_12)
return VA_RT_FORMAT_YUV420_12;
break;
case GST_VP9_PROFILE_3:
if (subsampling_x == 1 && subsampling_y == 0) {
if (bit_depth == GST_VP9_BIT_DEPTH_10)
return VA_RT_FORMAT_YUV422_10;
else if (bit_depth == GST_VP9_BIT_DEPTH_12)
return VA_RT_FORMAT_YUV422_12;
} else if (subsampling_x == 0 && subsampling_y == 0) {
if (bit_depth == GST_VP9_BIT_DEPTH_10)
return VA_RT_FORMAT_YUV444_10;
else if (bit_depth == GST_VP9_BIT_DEPTH_12)
return VA_RT_FORMAT_YUV444_12;
}
break;
default:
break;
}
GST_ERROR_OBJECT (self, "Unsupported chroma format");
return 0;
}
static VAProfile
_get_profile (GstVaVp9Dec * self, GstVP9Profile profile)
{
switch (profile) {
case GST_VP9_PROFILE_0:
return VAProfileVP9Profile0;
case GST_VP9_PROFILE_1:
return VAProfileVP9Profile1;
case GST_VP9_PROFILE_2:
return VAProfileVP9Profile2;
case GST_VP9_PROFILE_3:
return VAProfileVP9Profile3;
default:
break;
}
GST_ERROR_OBJECT (self, "Unsupported profile");
return VAProfileNone;
}
static gboolean
gst_va_vp9_new_sequence (GstVp9Decoder * decoder,
const GstVp9FrameHeader * frame_hdr)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaVp9Dec *self = GST_VA_VP9_DEC (decoder);
VAProfile profile;
gboolean negotiation_needed = FALSE;
guint rt_format;
profile = _get_profile (self, frame_hdr->profile);
if (profile == VAProfileNone)
return FALSE;
if (!gst_va_decoder_has_profile (base->decoder, profile)) {
GST_ERROR_OBJECT (self, "Profile %s is not supported",
gst_va_profile_name (profile));
return FALSE;
}
rt_format = _get_rtformat (self, frame_hdr->profile, frame_hdr->bit_depth,
frame_hdr->subsampling_x, frame_hdr->subsampling_y);
if (rt_format == 0)
return FALSE;
if (gst_va_decoder_format_changed (base->decoder, profile,
rt_format, frame_hdr->width, frame_hdr->height)) {
base->profile = profile;
base->width = frame_hdr->width;
base->height = frame_hdr->height;
base->rt_format = rt_format;
negotiation_needed = TRUE;
}
base->min_buffers = GST_VP9_REF_FRAMES;
if (negotiation_needed) {
self->need_negotiation = TRUE;
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_va_vp9_dec_new_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstFlowReturn ret;
GstVaVp9Dec *self = GST_VA_VP9_DEC (decoder);
GstVaDecodePicture *pic;
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
ret = gst_video_decoder_allocate_output_frame (vdec, frame);
if (ret != GST_FLOW_OK)
goto error;
pic = gst_va_decode_picture_new (base->decoder, frame->output_buffer);
gst_vp9_picture_set_user_data (picture, pic,
(GDestroyNotify) gst_va_decode_picture_free);
GST_LOG_OBJECT (self, "New va decode picture %p - %#x", pic,
gst_va_decode_picture_get_surface (pic));
return TRUE;
error:
{
GST_WARNING_OBJECT (self, "Failed to allocated output buffer, return %s",
gst_flow_get_name (ret));
return FALSE;
}
}
static inline gboolean
_fill_param (GstVp9Decoder * decoder, GstVp9Picture * picture, GstVp9Dpb * dpb)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecodePicture *va_pic;
const GstVp9FrameHeader *frame_hdr = &picture->frame_hdr;
const GstVp9LoopFilterParams *lfp = &frame_hdr->loop_filter_params;
const GstVp9SegmentationParams *sp = &frame_hdr->segmentation_params;
VADecPictureParameterBufferVP9 pic_param;
guint i;
/* *INDENT-OFF* */
pic_param = (VADecPictureParameterBufferVP9) {
.frame_width = base->width,
.frame_height = base->height,
.pic_fields.bits = {
.subsampling_x = frame_hdr->subsampling_x,
.subsampling_y = frame_hdr->subsampling_x,
.frame_type = frame_hdr->frame_type,
.show_frame = frame_hdr->show_frame,
.error_resilient_mode = frame_hdr->error_resilient_mode,
.intra_only = frame_hdr->intra_only,
.allow_high_precision_mv = frame_hdr->allow_high_precision_mv,
.mcomp_filter_type = frame_hdr->interpolation_filter,
.frame_parallel_decoding_mode = frame_hdr->frame_parallel_decoding_mode,
.reset_frame_context = frame_hdr->reset_frame_context,
.refresh_frame_context = frame_hdr->refresh_frame_context,
.frame_context_idx = frame_hdr->frame_context_idx,
.segmentation_enabled = sp->segmentation_enabled,
.segmentation_temporal_update = sp->segmentation_temporal_update,
.segmentation_update_map = sp->segmentation_update_map,
.last_ref_frame =
frame_hdr->ref_frame_idx[GST_VP9_REF_FRAME_LAST - 1],
.last_ref_frame_sign_bias =
frame_hdr->ref_frame_sign_bias[GST_VP9_REF_FRAME_LAST],
.golden_ref_frame =
frame_hdr->ref_frame_idx[GST_VP9_REF_FRAME_GOLDEN - 1],
.golden_ref_frame_sign_bias =
frame_hdr->ref_frame_sign_bias[GST_VP9_REF_FRAME_GOLDEN],
.alt_ref_frame =
frame_hdr->ref_frame_idx[GST_VP9_REF_FRAME_ALTREF - 1],
.alt_ref_frame_sign_bias =
frame_hdr->ref_frame_sign_bias[GST_VP9_REF_FRAME_ALTREF],
.lossless_flag = frame_hdr->lossless_flag,
},
.filter_level = lfp->loop_filter_level,
.sharpness_level = lfp->loop_filter_sharpness,
.log2_tile_rows = frame_hdr->tile_rows_log2,
.log2_tile_columns = frame_hdr->tile_cols_log2,
.frame_header_length_in_bytes = frame_hdr->frame_header_length_in_bytes,
.first_partition_size = frame_hdr->header_size_in_bytes,
.profile = frame_hdr->profile,
.bit_depth = frame_hdr->bit_depth
};
/* *INDENT-ON* */
memcpy (pic_param.mb_segment_tree_probs, sp->segmentation_tree_probs,
sizeof (sp->segmentation_tree_probs));
if (sp->segmentation_temporal_update) {
memcpy (pic_param.segment_pred_probs, sp->segmentation_pred_prob,
sizeof (sp->segmentation_pred_prob));
} else {
memset (pic_param.segment_pred_probs, 255,
sizeof (pic_param.segment_pred_probs));
}
for (i = 0; i < GST_VP9_REF_FRAMES; i++) {
if (dpb->pic_list[i]) {
GstVaDecodePicture *va_pic =
gst_vp9_picture_get_user_data (dpb->pic_list[i]);
pic_param.reference_frames[i] =
gst_va_decode_picture_get_surface (va_pic);
} else {
pic_param.reference_frames[i] = VA_INVALID_ID;
}
}
va_pic = gst_vp9_picture_get_user_data (picture);
return gst_va_decoder_add_param_buffer (base->decoder, va_pic,
VAPictureParameterBufferType, &pic_param, sizeof (pic_param));
}
static void
_update_segmentation (GstVaVp9Dec * self, GstVp9FrameHeader * header)
{
const GstVp9LoopFilterParams *lfp = &header->loop_filter_params;
const GstVp9QuantizationParams *qp = &header->quantization_params;
const GstVp9SegmentationParams *sp = &header->segmentation_params;
guint8 n_shift = lfp->loop_filter_level >> 5;
guint i;
for (i = 0; i < GST_VP9_MAX_SEGMENTS; i++) {
gint16 luma_dc_quant_scale;
gint16 luma_ac_quant_scale;
gint16 chroma_dc_quant_scale;
gint16 chroma_ac_quant_scale;
guint8 qindex;
guint8 lvl_lookup[GST_VP9_MAX_REF_LF_DELTAS][GST_VP9_MAX_MODE_LF_DELTAS];
gint lvl_seg = lfp->loop_filter_level;
/* 8.6.1 Dequantization functions */
qindex = gst_vp9_get_qindex (sp, qp, i);
luma_dc_quant_scale =
gst_vp9_get_dc_quant (qindex, qp->delta_q_y_dc, header->bit_depth);
luma_ac_quant_scale = gst_vp9_get_ac_quant (qindex, 0, header->bit_depth);
chroma_dc_quant_scale =
gst_vp9_get_dc_quant (qindex, qp->delta_q_uv_dc, header->bit_depth);
chroma_ac_quant_scale =
gst_vp9_get_ac_quant (qindex, qp->delta_q_uv_ac, header->bit_depth);
if (!lfp->loop_filter_level) {
memset (lvl_lookup, 0, sizeof (lvl_lookup));
} else {
/* 8.8.1 Loop filter frame init process */
if (gst_vp9_seg_feature_active (sp, i, GST_VP9_SEG_LVL_ALT_L)) {
if (sp->segmentation_abs_or_delta_update) {
lvl_seg = sp->feature_data[i][GST_VP9_SEG_LVL_ALT_L];
} else {
lvl_seg += sp->feature_data[i][GST_VP9_SEG_LVL_ALT_L];
}
lvl_seg = CLAMP (lvl_seg, 0, GST_VP9_MAX_LOOP_FILTER);
}
if (!lfp->loop_filter_delta_enabled) {
memset (lvl_lookup, lvl_seg, sizeof (lvl_lookup));
} else {
guint8 ref, mode;
gint intra_lvl = lvl_seg +
(lfp->loop_filter_ref_deltas[GST_VP9_REF_FRAME_INTRA] << n_shift);
memcpy (lvl_lookup, self->segmentation[i].filter_level,
sizeof (lvl_lookup));
lvl_lookup[GST_VP9_REF_FRAME_INTRA][0] =
CLAMP (intra_lvl, 0, GST_VP9_MAX_LOOP_FILTER);
for (ref = GST_VP9_REF_FRAME_LAST; ref < GST_VP9_REF_FRAME_MAX; ref++) {
for (mode = 0; mode < GST_VP9_MAX_MODE_LF_DELTAS; mode++) {
intra_lvl = lvl_seg + (lfp->loop_filter_ref_deltas[ref] << n_shift)
+ (lfp->loop_filter_mode_deltas[mode] << n_shift);
lvl_lookup[ref][mode] =
CLAMP (intra_lvl, 0, GST_VP9_MAX_LOOP_FILTER);
}
}
}
}
/* *INDENT-OFF* */
self->segmentation[i] = (GstVp9Segmentation) {
.luma_dc_quant_scale = luma_dc_quant_scale,
.luma_ac_quant_scale = luma_ac_quant_scale,
.chroma_dc_quant_scale = chroma_dc_quant_scale,
.chroma_ac_quant_scale = chroma_ac_quant_scale,
.reference_frame_enabled = sp->feature_enabled[i][GST_VP9_SEG_LVL_REF_FRAME],
.reference_frame = sp->feature_data[i][GST_VP9_SEG_LVL_REF_FRAME],
.reference_skip = sp->feature_enabled[i][GST_VP9_SEG_SEG_LVL_SKIP],
};
/* *INDENT-ON* */
memcpy (self->segmentation[i].filter_level, lvl_lookup,
sizeof (lvl_lookup));
}
}
static inline gboolean
_fill_slice (GstVp9Decoder * decoder, GstVp9Picture * picture)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaVp9Dec *self = GST_VA_VP9_DEC (decoder);
GstVaDecodePicture *va_pic;
const GstVp9Segmentation *seg;
VASliceParameterBufferVP9 slice_param;
guint i;
_update_segmentation (self, &picture->frame_hdr);
/* *INDENT-OFF* */
slice_param = (VASliceParameterBufferVP9) {
.slice_data_size = picture->size,
.slice_data_offset = 0,
.slice_data_flag = VA_SLICE_DATA_FLAG_ALL,
};
/* *INDENT-ON* */
for (i = 0; i < GST_VP9_MAX_SEGMENTS; i++) {
seg = &self->segmentation[i];
/* *INDENT-OFF* */
slice_param.seg_param[i] = (VASegmentParameterVP9) {
.segment_flags.fields = {
.segment_reference_enabled = seg->reference_frame_enabled,
.segment_reference = seg->reference_frame,
.segment_reference_skipped = seg->reference_skip,
},
.luma_dc_quant_scale = seg->luma_dc_quant_scale,
.luma_ac_quant_scale = seg->luma_ac_quant_scale,
.chroma_dc_quant_scale = seg->chroma_dc_quant_scale,
.chroma_ac_quant_scale = seg->chroma_ac_quant_scale,
};
/* *INDENT-ON* */
memcpy (slice_param.seg_param[i].filter_level, seg->filter_level,
sizeof (slice_param.seg_param[i].filter_level));
}
va_pic = gst_vp9_picture_get_user_data (picture);
return gst_va_decoder_add_slice_buffer (base->decoder, va_pic, &slice_param,
sizeof (slice_param), (gpointer) picture->data, picture->size);
}
static gboolean
gst_va_vp9_decode_picture (GstVp9Decoder * decoder, GstVp9Picture * picture,
GstVp9Dpb * dpb)
{
return _fill_param (decoder, picture, dpb) && _fill_slice (decoder, picture);
}
static gboolean
gst_va_vp9_dec_end_picture (GstVp9Decoder * decoder, GstVp9Picture * picture)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaDecodePicture *va_pic;
GST_LOG_OBJECT (base, "end picture %p", picture);
va_pic = gst_vp9_picture_get_user_data (picture);
return gst_va_decoder_decode (base->decoder, va_pic);
}
static GstFlowReturn
gst_va_vp9_dec_output_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaVp9Dec *self = GST_VA_VP9_DEC (decoder);
GST_LOG_OBJECT (self, "Outputting picture %p", picture);
if (base->copy_frames)
gst_va_base_dec_copy_output_buffer (base, frame);
gst_vp9_picture_unref (picture);
return gst_video_decoder_finish_frame (GST_VIDEO_DECODER (self), frame);
}
static GstVp9Picture *
gst_va_vp9_dec_duplicate_picture (GstVp9Decoder * decoder,
GstVideoCodecFrame * frame, GstVp9Picture * picture)
{
GstVaDecodePicture *va_pic, *va_dup;
GstVp9Picture *new_picture;
va_pic = gst_vp9_picture_get_user_data (picture);
va_dup = gst_va_decode_picture_dup (va_pic);
new_picture = gst_vp9_picture_new ();
new_picture->frame_hdr = picture->frame_hdr;
frame->output_buffer = gst_buffer_ref (va_dup->gstbuffer);
gst_vp9_picture_set_user_data (picture, va_dup,
(GDestroyNotify) gst_va_decode_picture_free);
return new_picture;
}
static gboolean
gst_va_vp9_dec_negotiate (GstVideoDecoder * decoder)
{
GstCapsFeatures *capsfeatures = NULL;
GstVaBaseDec *base = GST_VA_BASE_DEC (decoder);
GstVaVp9Dec *self = GST_VA_VP9_DEC (decoder);
GstVideoFormat format = GST_VIDEO_FORMAT_UNKNOWN;
GstVp9Decoder *vp9dec = GST_VP9_DECODER (decoder);
/* Ignore downstream renegotiation request. */
if (!self->need_negotiation)
return TRUE;
self->need_negotiation = FALSE;
if (gst_va_decoder_is_open (base->decoder)
&& !gst_va_decoder_close (base->decoder))
return FALSE;
if (!gst_va_decoder_open (base->decoder, base->profile, base->rt_format))
return FALSE;
if (!gst_va_decoder_set_format (base->decoder, base->width, base->height,
NULL))
return FALSE;
if (base->output_state)
gst_video_codec_state_unref (base->output_state);
gst_va_base_dec_get_preferred_format_and_caps_features (base, &format,
&capsfeatures);
base->output_state =
gst_video_decoder_set_output_state (decoder, format,
base->width, base->height, vp9dec->input_state);
base->output_state->caps = gst_video_info_to_caps (&base->output_state->info);
if (capsfeatures)
gst_caps_set_features_simple (base->output_state->caps, capsfeatures);
GST_INFO_OBJECT (self, "Negotiated caps %" GST_PTR_FORMAT,
base->output_state->caps);
return GST_VIDEO_DECODER_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS
(decoder))->negotiate (decoder);
}
static void
gst_va_vp9_dec_dispose (GObject * object)
{
gst_va_base_dec_close (GST_VIDEO_DECODER (object));
G_OBJECT_CLASS (GST_VA_BASE_DEC_GET_PARENT_CLASS (object))->dispose (object);
}
static void
gst_va_vp9_dec_class_init (gpointer g_class, gpointer class_data)
{
GstCaps *src_doc_caps, *sink_doc_caps;
GObjectClass *gobject_class = G_OBJECT_CLASS (g_class);
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (g_class);
GstVp9DecoderClass *vp9_class = GST_VP9_DECODER_CLASS (g_class);
struct CData *cdata = class_data;
gchar *long_name;
if (cdata->description) {
long_name = g_strdup_printf ("VA-API VP9 Decoder in %s",
cdata->description);
} else {
long_name = g_strdup ("VA-API VP9 Decoder");
}
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware", "VA-API based VP9 video decoder",
"Víctor Jáquez <vjaquez@igalia.com>");
sink_doc_caps = gst_caps_from_string (sink_caps_str);
src_doc_caps = gst_caps_from_string (src_caps_str);
gst_va_base_dec_class_init (GST_VA_BASE_DEC_CLASS (g_class), VP9,
cdata->render_device_path, cdata->sink_caps, cdata->src_caps,
src_doc_caps, sink_doc_caps);
gobject_class->dispose = gst_va_vp9_dec_dispose;
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_va_vp9_dec_negotiate);
vp9_class->new_sequence = GST_DEBUG_FUNCPTR (gst_va_vp9_new_sequence);
vp9_class->new_picture = GST_DEBUG_FUNCPTR (gst_va_vp9_dec_new_picture);
vp9_class->decode_picture = GST_DEBUG_FUNCPTR (gst_va_vp9_decode_picture);
vp9_class->end_picture = GST_DEBUG_FUNCPTR (gst_va_vp9_dec_end_picture);
vp9_class->output_picture = GST_DEBUG_FUNCPTR (gst_va_vp9_dec_output_picture);
vp9_class->duplicate_picture =
GST_DEBUG_FUNCPTR (gst_va_vp9_dec_duplicate_picture);
g_free (long_name);
g_free (cdata->description);
g_free (cdata->render_device_path);
gst_caps_unref (cdata->src_caps);
gst_caps_unref (cdata->sink_caps);
g_free (cdata);
}
static void
gst_va_vp9_dec_init (GTypeInstance * instance, gpointer g_class)
{
gst_va_base_dec_init (GST_VA_BASE_DEC (instance), GST_CAT_DEFAULT);
}
/* This element doesn't parse supreframes. Let's delegate it to the
* parser. */
static GstCaps *
_complete_sink_caps (GstCaps * sinkcaps)
{
gst_caps_set_simple (sinkcaps, "alignment", G_TYPE_STRING, "frame", NULL);
return gst_caps_ref (sinkcaps);
}
static gpointer
_register_debug_category (gpointer data)
{
GST_DEBUG_CATEGORY_INIT (gst_va_vp9dec_debug, "vavp9dec", 0,
"VA VP9 decoder");
return NULL;
}
gboolean
gst_va_vp9_dec_register (GstPlugin * plugin, GstVaDevice * device,
GstCaps * sink_caps, GstCaps * src_caps, guint rank)
{
static GOnce debug_once = G_ONCE_INIT;
GType type;
GTypeInfo type_info = {
.class_size = sizeof (GstVaVp9DecClass),
.class_init = gst_va_vp9_dec_class_init,
.instance_size = sizeof (GstVaVp9Dec),
.instance_init = gst_va_vp9_dec_init,
};
struct CData *cdata;
gboolean ret;
gchar *type_name, *feature_name;
g_return_val_if_fail (GST_IS_PLUGIN (plugin), FALSE);
g_return_val_if_fail (GST_IS_VA_DEVICE (device), FALSE);
g_return_val_if_fail (GST_IS_CAPS (sink_caps), FALSE);
g_return_val_if_fail (GST_IS_CAPS (src_caps), FALSE);
cdata = g_new (struct CData, 1);
cdata->description = NULL;
cdata->render_device_path = g_strdup (device->render_device_path);
cdata->sink_caps = _complete_sink_caps (sink_caps);
cdata->src_caps = gst_caps_ref (src_caps);
/* class data will be leaked if the element never gets instantiated */
GST_MINI_OBJECT_FLAG_SET (sink_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
GST_MINI_OBJECT_FLAG_SET (src_caps, GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
type_info.class_data = cdata;
type_name = g_strdup ("GstVaVp9Dec");
feature_name = g_strdup ("vavp9dec");
/* The first decoder to be registered should use a constant name,
* like vavp9dec, for any additional decoders, we create unique
* names, using inserting the render device name. */
if (g_type_from_name (type_name)) {
gchar *basename = g_path_get_basename (device->render_device_path);
g_free (type_name);
g_free (feature_name);
type_name = g_strdup_printf ("GstVa%sVp9Dec", basename);
feature_name = g_strdup_printf ("va%svp9dec", basename);
cdata->description = basename;
/* lower rank for non-first device */
if (rank > 0)
rank--;
}
g_once (&debug_once, _register_debug_category, NULL);
type = g_type_register_static (GST_TYPE_VP9_DECODER,
type_name, &type_info, 0);
ret = gst_element_register (plugin, feature_name, rank, type);
g_free (type_name);
g_free (feature_name);
return ret;
}