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gstreamer/subprojects/gst-plugins-bad/sys/v4l2codecs/gstv4l2codech265dec.c
Benjamin Gaignard 451b32574f v4l2codecs: dynamically discovers supported pixels formats 
If the driver allows it, for each stateless decoder,
enumerate all the pixels formats and use this list for source
pad instead of a static template.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7686>
2024-10-19 22:14:13 +00:00

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/* GStreamer
* Copyright (C) 2020 Nicolas Dufresne <nicolas.dufresne@collabora.com>
* Copyright (C) 2020 Safran Passenger Innovations LLC
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstv4l2codecallocator.h"
#include "gstv4l2codech265dec.h"
#include "gstv4l2codecpool.h"
#include "gstv4l2format.h"
#include "linux/v4l2-controls.h"
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#define V4L2_MIN_KERNEL_VER_MAJOR 5
#define V4L2_MIN_KERNEL_VER_MINOR 20
#define V4L2_MIN_KERNEL_VERSION KERNEL_VERSION(V4L2_MIN_KERNEL_VER_MAJOR, V4L2_MIN_KERNEL_VER_MINOR, 0)
GST_DEBUG_CATEGORY_STATIC (v4l2_h265dec_debug);
#define GST_CAT_DEFAULT v4l2_h265dec_debug
enum
{
PROP_0,
PROP_LAST = PROP_0
};
static GstStaticPadTemplate sink_template =
GST_STATIC_PAD_TEMPLATE (GST_VIDEO_DECODER_SINK_NAME,
GST_PAD_SINK, GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h265, "
"stream-format=(string) { hvc1, hev1, byte-stream }, "
"alignment=(string) au")
);
#define SRC_CAPS \
GST_VIDEO_DMA_DRM_CAPS_MAKE " ; " \
GST_VIDEO_CAPS_MAKE (GST_V4L2_DEFAULT_VIDEO_FORMATS)
#define SRC_CAPS_NO_DRM \
GST_VIDEO_CAPS_MAKE (GST_V4L2_DEFAULT_VIDEO_FORMATS)
static GstStaticCaps static_src_caps = GST_STATIC_CAPS (SRC_CAPS);
static GstStaticCaps static_src_caps_no_drm = GST_STATIC_CAPS (SRC_CAPS_NO_DRM);
struct _GstV4l2CodecH265Dec
{
GstH265Decoder parent;
GstV4l2Decoder *decoder;
GstVideoCodecState *output_state;
GstVideoInfo vinfo;
GstVideoInfoDmaDrm vinfo_drm;
gint display_width;
gint display_height;
gint coded_width;
gint coded_height;
guint bitdepth;
guint chroma_format_idc;
guint num_slices;
gboolean first_slice;
GstV4l2CodecAllocator *sink_allocator;
GstV4l2CodecAllocator *src_allocator;
GstV4l2CodecPool *src_pool;
gint min_pool_size;
gboolean has_videometa;
gboolean streaming;
gboolean copy_frames;
gboolean need_sequence;
struct v4l2_ctrl_hevc_sps sps;
struct v4l2_ctrl_hevc_pps pps;
struct v4l2_ctrl_hevc_scaling_matrix scaling_matrix;
struct v4l2_ctrl_hevc_decode_params decode_params;
GArray *slice_params;
GArray *entry_point_offsets;
enum v4l2_stateless_hevc_decode_mode decode_mode;
enum v4l2_stateless_hevc_start_code start_code;
GstMemory *bitstream;
GstMapInfo bitstream_map;
gboolean support_scaling_matrix;
gboolean support_slice_parameters;
gboolean support_entry_point_offsets;
GstVideoConverter *convert;
gboolean need_crop;
gint crop_rect_width, crop_rect_height;
gint crop_rect_x, crop_rect_y;
};
G_DEFINE_ABSTRACT_TYPE (GstV4l2CodecH265Dec, gst_v4l2_codec_h265_dec,
GST_TYPE_H265_DECODER);
#define parent_class gst_v4l2_codec_h265_dec_parent_class
static gboolean
is_frame_based (GstV4l2CodecH265Dec * self)
{
return (self->decode_mode ==
V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED) &&
!self->support_slice_parameters;
}
static gboolean
is_slice_based (GstV4l2CodecH265Dec * self)
{
return self->decode_mode == V4L2_STATELESS_HEVC_DECODE_MODE_SLICE_BASED;
}
static gboolean
is_frame_based_with_slices (GstV4l2CodecH265Dec * self)
{
return (self->decode_mode ==
V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED) &&
self->support_slice_parameters;
}
static gboolean
needs_start_codes (GstV4l2CodecH265Dec * self)
{
return self->start_code == V4L2_STATELESS_HEVC_START_CODE_ANNEX_B;
}
static gboolean
gst_v4l2_decoder_h265_api_check (GstV4l2Decoder * decoder)
{
guint i, ret_size;
/* *INDENT-OFF* */
#define SET_ID(cid) .id = (cid), .name = #cid
struct
{
const gchar *name;
unsigned int id;
unsigned int size;
gboolean optional;
} controls[] = {
{
SET_ID (V4L2_CID_STATELESS_HEVC_SPS),
.size = sizeof(struct v4l2_ctrl_hevc_sps),
}, {
SET_ID (V4L2_CID_STATELESS_HEVC_PPS),
.size = sizeof(struct v4l2_ctrl_hevc_pps),
}, {
SET_ID (V4L2_CID_STATELESS_HEVC_SCALING_MATRIX),
.size = sizeof(struct v4l2_ctrl_hevc_scaling_matrix),
.optional = TRUE,
}, {
SET_ID (V4L2_CID_STATELESS_HEVC_DECODE_PARAMS),
.size = sizeof(struct v4l2_ctrl_hevc_decode_params),
}, {
SET_ID (V4L2_CID_STATELESS_HEVC_SLICE_PARAMS),
.size = sizeof(struct v4l2_ctrl_hevc_slice_params),
.optional = TRUE,
}
};
#undef SET_ID
/* *INDENT-ON* */
/*
* Compatibility check: make sure the pointer controls are
* the right size.
*/
for (i = 0; i < G_N_ELEMENTS (controls); i++) {
gboolean control_found;
control_found = gst_v4l2_decoder_query_control_size (decoder,
controls[i].id, &ret_size);
if (!controls[i].optional && !control_found) {
GST_WARNING ("Driver is missing %s support.", controls[i].name);
return FALSE;
}
if (control_found && ret_size != controls[i].size) {
GST_WARNING ("%s control size mismatch: got %d bytes but %d expected.",
controls[i].name, ret_size, controls[i].size);
return FALSE;
}
}
return TRUE;
}
static gboolean
gst_v4l2_codec_h265_dec_open (GstVideoDecoder * decoder)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
/* *INDENT-OFF* */
struct v4l2_ext_control control[] = {
{
.id = V4L2_CID_STATELESS_HEVC_DECODE_MODE,
},
{
.id = V4L2_CID_STATELESS_HEVC_START_CODE,
},
};
struct v4l2_ext_control scaling_matrix[] = {
{
.id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX,
.ptr = &self->scaling_matrix,
.size = sizeof (self->scaling_matrix),
},
};
/* *INDENT-ON* */
if (!gst_v4l2_decoder_open (self->decoder)) {
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE,
("Failed to open H265 decoder"),
("gst_v4l2_decoder_open() failed: %s", g_strerror (errno)));
return FALSE;
}
if (!gst_v4l2_decoder_get_controls (self->decoder, control,
G_N_ELEMENTS (control))) {
GST_ELEMENT_ERROR (self, RESOURCE, OPEN_READ_WRITE,
("Driver did not report framing and start code method."),
("gst_v4l2_decoder_get_controls() failed: %s", g_strerror (errno)));
return FALSE;
}
self->support_scaling_matrix =
gst_v4l2_decoder_get_controls (self->decoder, scaling_matrix,
G_N_ELEMENTS (scaling_matrix));
self->support_slice_parameters =
gst_v4l2_decoder_query_control_size (self->decoder,
V4L2_CID_STATELESS_HEVC_SLICE_PARAMS, NULL);
self->support_entry_point_offsets =
gst_v4l2_decoder_query_control_size (self->decoder,
V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS, NULL);
self->decode_mode = control[0].value;
self->start_code = control[1].value;
GST_INFO_OBJECT (self, "Opened H265 %s decoder %s",
is_frame_based (self) ? "frame based" : is_slice_based (self) ?
"slice based" : "frame based with slices",
needs_start_codes (self) ? "using start-codes" : "without start-codes");
gst_h265_decoder_set_process_ref_pic_lists (GST_H265_DECODER (self),
is_slice_based (self) || is_frame_based_with_slices (self));
return TRUE;
}
static gboolean
gst_v4l2_codec_h265_dec_close (GstVideoDecoder * decoder)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
gst_v4l2_decoder_close (self->decoder);
return TRUE;
}
static void
gst_v4l2_codec_h265_dec_streamoff (GstV4l2CodecH265Dec * self)
{
if (self->streaming) {
gst_v4l2_decoder_streamoff (self->decoder, GST_PAD_SINK);
gst_v4l2_decoder_streamoff (self->decoder, GST_PAD_SRC);
self->streaming = FALSE;
}
}
static void
gst_v4l2_codec_h265_dec_reset_allocation (GstV4l2CodecH265Dec * self)
{
if (self->sink_allocator) {
gst_v4l2_codec_allocator_detach (self->sink_allocator);
g_clear_object (&self->sink_allocator);
}
if (self->src_allocator) {
gst_v4l2_codec_allocator_detach (self->src_allocator);
g_clear_object (&self->src_allocator);
g_clear_object (&self->src_pool);
}
}
static gboolean
gst_v4l2_codec_h265_dec_stop (GstVideoDecoder * decoder)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
gst_v4l2_codec_h265_dec_streamoff (self);
gst_v4l2_codec_h265_dec_reset_allocation (self);
if (self->output_state)
gst_video_codec_state_unref (self->output_state);
self->output_state = NULL;
return GST_VIDEO_DECODER_CLASS (parent_class)->stop (decoder);
}
static gint
get_pixel_bitdepth (GstV4l2CodecH265Dec * self)
{
gint depth;
switch (self->chroma_format_idc) {
case 0:
/* 4:0:0 */
depth = self->bitdepth;
break;
case 1:
/* 4:2:0 */
depth = self->bitdepth + self->bitdepth / 2;
break;
case 2:
/* 4:2:2 */
depth = 2 * self->bitdepth;
break;
case 3:
/* 4:4:4 */
depth = 3 * self->bitdepth;
break;
default:
GST_WARNING_OBJECT (self, "Unsupported chroma format %i",
self->chroma_format_idc);
depth = 0;
break;
}
return depth;
}
static gboolean
gst_v4l2_codec_h265_dec_negotiate (GstVideoDecoder * decoder)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
GstH265Decoder *h265dec = GST_H265_DECODER (decoder);
/* *INDENT-OFF* */
struct v4l2_ext_control control[] = {
{
.id = V4L2_CID_STATELESS_HEVC_SPS,
.ptr = &self->sps,
.size = sizeof (self->sps),
},
};
/* *INDENT-ON* */
GstCaps *peer_caps, *filter, *caps;
GstStaticCaps *static_filter;
/* Ignore downstream renegotiation request. */
if (self->streaming)
goto done;
GST_DEBUG_OBJECT (self, "Negotiate");
gst_v4l2_codec_h265_dec_reset_allocation (self);
if (!gst_v4l2_decoder_set_sink_fmt (self->decoder, V4L2_PIX_FMT_HEVC_SLICE,
self->coded_width, self->coded_height, get_pixel_bitdepth (self))) {
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("Failed to configure H265 decoder"),
("gst_v4l2_decoder_set_sink_fmt() failed: %s", g_strerror (errno)));
gst_v4l2_decoder_close (self->decoder);
return FALSE;
}
if (!gst_v4l2_decoder_set_controls (self->decoder, NULL, control,
G_N_ELEMENTS (control))) {
GST_ELEMENT_ERROR (decoder, RESOURCE, WRITE,
("Driver does not support the selected stream."), (NULL));
return FALSE;
}
/* If the peer has ANY caps only advertise system memory caps */
peer_caps = gst_pad_peer_query_caps (decoder->srcpad, NULL);
static_filter =
gst_caps_is_any (peer_caps) ? &static_src_caps_no_drm : &static_src_caps;
gst_caps_unref (peer_caps);
filter = gst_v4l2_decoder_enum_src_formats (self->decoder, static_filter);
if (!filter) {
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("No supported decoder output formats"), (NULL));
return FALSE;
}
GST_DEBUG_OBJECT (self, "Supported output formats: %" GST_PTR_FORMAT, filter);
caps = gst_pad_peer_query_caps (decoder->srcpad, filter);
gst_caps_unref (filter);
GST_DEBUG_OBJECT (self, "Peer supported formats: %" GST_PTR_FORMAT, caps);
if (!gst_v4l2_decoder_select_src_format (self->decoder, caps, &self->vinfo,
&self->vinfo_drm)) {
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("Unsupported bitdepth/chroma format"),
("No support for %ux%u %ubit chroma IDC %i", self->coded_width,
self->coded_height, self->bitdepth, self->chroma_format_idc));
gst_caps_unref (caps);
return FALSE;
}
gst_caps_unref (caps);
done:
if (self->output_state)
gst_video_codec_state_unref (self->output_state);
self->output_state =
gst_v4l2_decoder_set_output_state (GST_VIDEO_DECODER (self), &self->vinfo,
&self->vinfo_drm, self->display_width, self->display_height,
h265dec->input_state);
if (GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder)) {
if (self->streaming)
return TRUE;
if (!gst_v4l2_decoder_streamon (self->decoder, GST_PAD_SINK)) {
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
("Could not enable the decoder driver."),
("VIDIOC_STREAMON(SINK) failed: %s", g_strerror (errno)));
return FALSE;
}
if (!gst_v4l2_decoder_streamon (self->decoder, GST_PAD_SRC)) {
GST_ELEMENT_ERROR (self, RESOURCE, FAILED,
("Could not enable the decoder driver."),
("VIDIOC_STREAMON(SRC) failed: %s", g_strerror (errno)));
return FALSE;
}
self->streaming = TRUE;
return TRUE;
}
return FALSE;
}
static gboolean
gst_v4l2_codec_h265_dec_decide_allocation (GstVideoDecoder * decoder,
GstQuery * query)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
GstCaps *caps = NULL;
guint min = 0, num_bitstream;
if (self->streaming)
goto no_internal_changes;
g_clear_object (&self->src_pool);
g_clear_object (&self->src_allocator);
self->has_videometa = gst_query_find_allocation_meta (query,
GST_VIDEO_META_API_TYPE, NULL);
gst_query_parse_allocation (query, &caps, NULL);
if (!caps) {
GST_ERROR_OBJECT (self, "No valid caps");
return FALSE;
}
if (gst_video_is_dma_drm_caps (caps) && !self->has_videometa) {
GST_ERROR_OBJECT (self,
"DMABuf caps negotiated without the mandatory support of VideoMeta");
return FALSE;
}
if (gst_query_get_n_allocation_pools (query) > 0)
gst_query_parse_nth_allocation_pool (query, 0, NULL, NULL, &min, NULL);
min = MAX (2, min);
num_bitstream = 1 +
MAX (1, gst_v4l2_decoder_get_render_delay (self->decoder));
self->sink_allocator = gst_v4l2_codec_allocator_new (self->decoder,
GST_PAD_SINK, num_bitstream);
if (!self->sink_allocator) {
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Not enough memory to allocate sink buffers."), (NULL));
return FALSE;
}
self->src_allocator = gst_v4l2_codec_allocator_new (self->decoder,
GST_PAD_SRC, self->min_pool_size + min);
if (!self->src_allocator) {
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Not enough memory to allocate source buffers."), (NULL));
g_clear_object (&self->sink_allocator);
return FALSE;
}
self->src_pool = gst_v4l2_codec_pool_new (self->src_allocator, &self->vinfo);
no_internal_changes:
/* Our buffer pool is internal, we will let the base class create a video
* pool, and use it if we are running out of buffers or if downstream does
* not support GstVideoMeta */
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
static void
gst_v4l2_codec_h265_dec_fill_sequence (GstV4l2CodecH265Dec * self,
const GstH265SPS * sps)
{
/* Whenever we update teh sps, we need to send it again */
self->need_sequence = TRUE;
/* *INDENT-OFF* */
self->sps = (struct v4l2_ctrl_hevc_sps) {
.video_parameter_set_id = sps->vps->id,
.seq_parameter_set_id = sps->id,
.pic_width_in_luma_samples = sps->pic_width_in_luma_samples,
.pic_height_in_luma_samples = sps->pic_height_in_luma_samples,
.bit_depth_luma_minus8 = sps->bit_depth_luma_minus8,
.bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
.log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
.sps_max_dec_pic_buffering_minus1 = sps->max_dec_pic_buffering_minus1[0],
.sps_max_num_reorder_pics = sps->max_num_reorder_pics[0],
.sps_max_latency_increase_plus1 = sps->max_latency_increase_plus1[0],
.log2_min_luma_coding_block_size_minus3 = sps->log2_min_luma_coding_block_size_minus3,
.log2_diff_max_min_luma_coding_block_size = sps->log2_diff_max_min_luma_coding_block_size,
.log2_min_luma_transform_block_size_minus2 = sps->log2_min_transform_block_size_minus2,
.log2_diff_max_min_luma_transform_block_size = sps->log2_diff_max_min_transform_block_size,
.max_transform_hierarchy_depth_inter = sps->max_transform_hierarchy_depth_inter,
.max_transform_hierarchy_depth_intra = sps->max_transform_hierarchy_depth_intra,
.num_short_term_ref_pic_sets = sps->num_short_term_ref_pic_sets,
.num_long_term_ref_pics_sps = sps->num_long_term_ref_pics_sps,
.chroma_format_idc = sps->chroma_format_idc,
.sps_max_sub_layers_minus1 = sps->max_sub_layers_minus1,
.flags = (sps->separate_colour_plane_flag ? V4L2_HEVC_SPS_FLAG_SEPARATE_COLOUR_PLANE : 0) |
(sps->scaling_list_enabled_flag ? V4L2_HEVC_SPS_FLAG_SCALING_LIST_ENABLED : 0) |
(sps->amp_enabled_flag ? V4L2_HEVC_SPS_FLAG_AMP_ENABLED : 0) |
(sps->sample_adaptive_offset_enabled_flag ? V4L2_HEVC_SPS_FLAG_SAMPLE_ADAPTIVE_OFFSET : 0) |
(sps->long_term_ref_pics_present_flag ? V4L2_HEVC_SPS_FLAG_LONG_TERM_REF_PICS_PRESENT : 0) |
(sps->temporal_mvp_enabled_flag ? V4L2_HEVC_SPS_FLAG_SPS_TEMPORAL_MVP_ENABLED : 0) |
(sps->strong_intra_smoothing_enabled_flag ? V4L2_HEVC_SPS_FLAG_STRONG_INTRA_SMOOTHING_ENABLED : 0),
};
/* *INDENT-ON* */
if (sps->pcm_enabled_flag) {
self->sps.pcm_sample_bit_depth_luma_minus1 =
sps->pcm_sample_bit_depth_luma_minus1;
self->sps.pcm_sample_bit_depth_chroma_minus1 =
sps->pcm_sample_bit_depth_chroma_minus1;
self->sps.log2_min_pcm_luma_coding_block_size_minus3 =
sps->log2_min_pcm_luma_coding_block_size_minus3;
self->sps.log2_diff_max_min_pcm_luma_coding_block_size =
sps->log2_diff_max_min_pcm_luma_coding_block_size;
self->sps.flags |=
V4L2_HEVC_SPS_FLAG_PCM_ENABLED | (sps->pcm_loop_filter_disabled_flag ?
V4L2_HEVC_SPS_FLAG_PCM_LOOP_FILTER_DISABLED : 0);
}
}
static void
gst_v4l2_codec_h265_dec_fill_pps (GstV4l2CodecH265Dec * self, GstH265PPS * pps)
{
gint i;
/* *INDENT-OFF* */
self->pps = (struct v4l2_ctrl_hevc_pps) {
.pic_parameter_set_id = pps->id,
.num_extra_slice_header_bits = pps->num_extra_slice_header_bits,
.num_ref_idx_l0_default_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
.num_ref_idx_l1_default_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
.init_qp_minus26 = pps->init_qp_minus26,
.diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
.pps_cb_qp_offset = pps->cb_qp_offset,
.pps_cr_qp_offset = pps->cr_qp_offset,
.pps_beta_offset_div2 = pps->beta_offset_div2,
.pps_tc_offset_div2 = pps->tc_offset_div2,
.log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,
.flags = (pps->dependent_slice_segments_enabled_flag ? V4L2_HEVC_PPS_FLAG_DEPENDENT_SLICE_SEGMENT_ENABLED : 0) |
(pps->output_flag_present_flag ? V4L2_HEVC_PPS_FLAG_OUTPUT_FLAG_PRESENT : 0) |
(pps->sign_data_hiding_enabled_flag ? V4L2_HEVC_PPS_FLAG_SIGN_DATA_HIDING_ENABLED : 0) |
(pps->cabac_init_present_flag ? V4L2_HEVC_PPS_FLAG_CABAC_INIT_PRESENT : 0) |
(pps->constrained_intra_pred_flag ? V4L2_HEVC_PPS_FLAG_CONSTRAINED_INTRA_PRED : 0) |
(pps->transform_skip_enabled_flag ? V4L2_HEVC_PPS_FLAG_TRANSFORM_SKIP_ENABLED : 0) |
(pps->cu_qp_delta_enabled_flag ? V4L2_HEVC_PPS_FLAG_CU_QP_DELTA_ENABLED : 0) |
(pps->slice_chroma_qp_offsets_present_flag ? V4L2_HEVC_PPS_FLAG_PPS_SLICE_CHROMA_QP_OFFSETS_PRESENT : 0) |
(pps->weighted_pred_flag ? V4L2_HEVC_PPS_FLAG_WEIGHTED_PRED : 0) |
(pps->weighted_bipred_flag ? V4L2_HEVC_PPS_FLAG_WEIGHTED_BIPRED : 0) |
(pps->transquant_bypass_enabled_flag ? V4L2_HEVC_PPS_FLAG_TRANSQUANT_BYPASS_ENABLED : 0) |
(pps->tiles_enabled_flag ? V4L2_HEVC_PPS_FLAG_TILES_ENABLED : 0) |
(pps->entropy_coding_sync_enabled_flag ? V4L2_HEVC_PPS_FLAG_ENTROPY_CODING_SYNC_ENABLED : 0) |
(pps->loop_filter_across_tiles_enabled_flag ? V4L2_HEVC_PPS_FLAG_LOOP_FILTER_ACROSS_TILES_ENABLED : 0) |
(pps->loop_filter_across_slices_enabled_flag ? V4L2_HEVC_PPS_FLAG_PPS_LOOP_FILTER_ACROSS_SLICES_ENABLED : 0 ) |
(pps->deblocking_filter_override_enabled_flag ? V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_OVERRIDE_ENABLED : 0) |
(pps->deblocking_filter_disabled_flag ? V4L2_HEVC_PPS_FLAG_PPS_DISABLE_DEBLOCKING_FILTER : 0) |
(pps->lists_modification_present_flag ? V4L2_HEVC_PPS_FLAG_LISTS_MODIFICATION_PRESENT : 0) |
(pps->slice_segment_header_extension_present_flag ? V4L2_HEVC_PPS_FLAG_SLICE_SEGMENT_HEADER_EXTENSION_PRESENT : 0) |
(pps->deblocking_filter_control_present_flag ? V4L2_HEVC_PPS_FLAG_DEBLOCKING_FILTER_CONTROL_PRESENT : 0) |
(pps->uniform_spacing_flag ? V4L2_HEVC_PPS_FLAG_UNIFORM_SPACING : 0),
};
/* *INDENT-ON* */
if (pps->tiles_enabled_flag) {
self->pps.num_tile_columns_minus1 = pps->num_tile_columns_minus1;
self->pps.num_tile_rows_minus1 = pps->num_tile_rows_minus1;
/* This should not be needed if we use uniform spacing, but Cedrus driver
* depends on it for now. As GStreamer parser do set that, lets just pass
* the information we have. */
for (i = 0; i <= pps->num_tile_columns_minus1; i++)
self->pps.column_width_minus1[i] = pps->column_width_minus1[i];
for (i = 0; i <= pps->num_tile_rows_minus1; i++)
self->pps.row_height_minus1[i] = pps->row_height_minus1[i];
}
}
static void
gst_v4l2_codec_h265_dec_fill_scaling_matrix (GstV4l2CodecH265Dec * self,
GstH265PPS * pps)
{
GstH265ScalingList *sl;
gint i;
if (!pps->sps->scaling_list_enabled_flag) {
memset (&self->scaling_matrix, 0, sizeof (self->scaling_matrix));
return;
}
if (pps->scaling_list_data_present_flag)
sl = &pps->scaling_list;
else if (pps->sps->scaling_list_data_present_flag)
sl = &pps->sps->scaling_list;
/* The default scaling list is strored in the pps */
else
sl = &pps->scaling_list;
for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_4x4); i++)
gst_h265_quant_matrix_4x4_get_raster_from_uprightdiagonal
(self->scaling_matrix.scaling_list_4x4[i], sl->scaling_lists_4x4[i]);
for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_8x8); i++)
gst_h265_quant_matrix_8x8_get_raster_from_uprightdiagonal
(self->scaling_matrix.scaling_list_8x8[i], sl->scaling_lists_8x8[i]);
for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_16x16); i++)
gst_h265_quant_matrix_16x16_get_raster_from_uprightdiagonal
(self->scaling_matrix.scaling_list_16x16[i],
sl->scaling_lists_16x16[i]);
for (i = 0; i < G_N_ELEMENTS (sl->scaling_lists_32x32); i++)
gst_h265_quant_matrix_32x32_get_raster_from_uprightdiagonal
(self->scaling_matrix.scaling_list_32x32[i],
sl->scaling_lists_32x32[i]);
for (i = 0; i < G_N_ELEMENTS (sl->scaling_list_dc_coef_minus8_16x16); i++)
self->scaling_matrix.scaling_list_dc_coef_16x16[i] =
sl->scaling_list_dc_coef_minus8_16x16[i] + 8;
for (i = 0; i < G_N_ELEMENTS (sl->scaling_list_dc_coef_minus8_32x32); i++)
self->scaling_matrix.scaling_list_dc_coef_32x32[i] =
sl->scaling_list_dc_coef_minus8_32x32[i] + 8;
}
static guint
get_slice_header_byte_offset (GstH265Slice * slice)
{
guint epb_count, nal_header_bytes;
epb_count = slice->header.n_emulation_prevention_bytes;
nal_header_bytes = slice->nalu.header_bytes;
return nal_header_bytes + (slice->header.header_size + 7) / 8 - epb_count;
}
static void
gst_v4l2_codec_h265_dec_fill_slice_params (GstV4l2CodecH265Dec * self,
GstH265Slice * slice, GstH265Picture * picture)
{
gint n = self->num_slices++;
GstH265SliceHdr *slice_hdr = &slice->header;
GstH265PPS *pps = slice_hdr->pps;
gsize slice_size = slice->nalu.size;
gsize sc_offset = 0;
struct v4l2_ctrl_hevc_slice_params *params;
gint i, j;
gint chroma_weight, chroma_log2_weight_denom;
/* TODO adjust this if sps_ext is later supported */
const gint32 WpOffsetHalfRangeC = 1 << 7;
/* Ensure array is large enough */
if (self->slice_params->len < self->num_slices)
g_array_set_size (self->slice_params, self->slice_params->len * 2);
if (needs_start_codes (self))
sc_offset = 3;
/* *INDENT-OFF* */
params = &g_array_index (self->slice_params, struct v4l2_ctrl_hevc_slice_params, n);
*params = (struct v4l2_ctrl_hevc_slice_params) {
.bit_size = (slice_size + sc_offset) * 8,
.data_byte_offset = get_slice_header_byte_offset (slice) + sc_offset,
.num_entry_point_offsets = slice_hdr->num_entry_point_offsets,
.nal_unit_type = slice->nalu.type,
.nuh_temporal_id_plus1 = slice->nalu.temporal_id_plus1,
.slice_type = slice_hdr->type,
.colour_plane_id = slice_hdr->colour_plane_id,
.slice_pic_order_cnt = picture->pic_order_cnt,
.num_ref_idx_l0_active_minus1 = slice_hdr->num_ref_idx_l0_active_minus1,
.num_ref_idx_l1_active_minus1 = slice_hdr->num_ref_idx_l1_active_minus1,
.collocated_ref_idx = slice_hdr->collocated_ref_idx,
.five_minus_max_num_merge_cand = slice_hdr->five_minus_max_num_merge_cand,
.slice_qp_delta = slice_hdr->qp_delta,
.slice_cb_qp_offset = slice_hdr->cb_qp_offset,
.slice_cr_qp_offset = slice_hdr->cr_qp_offset,
.slice_act_y_qp_offset = slice_hdr->slice_act_y_qp_offset,
.slice_act_cb_qp_offset = slice_hdr->slice_act_cb_qp_offset,
.slice_act_cr_qp_offset = slice_hdr->slice_act_cr_qp_offset,
.slice_beta_offset_div2 = slice_hdr->beta_offset_div2,
.slice_tc_offset_div2 = slice_hdr->tc_offset_div2,
.pic_struct = picture->pic_struct,
.slice_segment_addr = slice_hdr->segment_address,
.short_term_ref_pic_set_size = slice_hdr->short_term_ref_pic_set_size,
.long_term_ref_pic_set_size = slice_hdr->long_term_ref_pic_set_size,
.pred_weight_table = (struct v4l2_hevc_pred_weight_table) {
.luma_log2_weight_denom = slice_hdr->pred_weight_table.luma_log2_weight_denom,
.delta_chroma_log2_weight_denom = slice_hdr->pred_weight_table.delta_chroma_log2_weight_denom,
},
.flags =
(slice_hdr->sao_luma_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_LUMA : 0) |
(slice_hdr->sao_chroma_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_SAO_CHROMA : 0) |
(slice_hdr->temporal_mvp_enabled_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_TEMPORAL_MVP_ENABLED : 0) |
(slice_hdr->mvd_l1_zero_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_MVD_L1_ZERO : 0) |
(slice_hdr->cabac_init_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_CABAC_INIT : 0) |
(slice_hdr->collocated_from_l0_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_COLLOCATED_FROM_L0 : 0) |
(slice_hdr->use_integer_mv_flag ? V4L2_HEVC_SLICE_PARAMS_FLAG_USE_INTEGER_MV : 0) |
(slice_hdr->deblocking_filter_disabled_flag ?
V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_DEBLOCKING_FILTER_DISABLED : 0) |
(slice_hdr->loop_filter_across_slices_enabled_flag ?
V4L2_HEVC_SLICE_PARAMS_FLAG_SLICE_LOOP_FILTER_ACROSS_SLICES_ENABLED : 0) |
(slice_hdr->dependent_slice_segment_flag ?
V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT : 0),
};
/* *INDENT-ON* */
for (i = 0; i < slice_hdr->num_entry_point_offsets; i++) {
guint32 entry_point_offset = slice_hdr->entry_point_offset_minus1[i] + 1;
g_array_append_val (self->entry_point_offsets, entry_point_offset);
}
if (GST_H265_IS_I_SLICE (slice_hdr) ||
(!pps->weighted_pred_flag && GST_H265_IS_P_SLICE (slice_hdr)) ||
(!pps->weighted_bipred_flag && GST_H265_IS_B_SLICE (slice_hdr)))
return;
for (i = 0; i <= slice_hdr->num_ref_idx_l0_active_minus1; i++) {
if (!slice_hdr->pred_weight_table.luma_weight_l0_flag[i])
continue;
params->pred_weight_table.delta_luma_weight_l0[i] =
slice_hdr->pred_weight_table.delta_luma_weight_l0[i];
params->pred_weight_table.luma_offset_l0[i] =
slice_hdr->pred_weight_table.luma_offset_l0[i];
}
chroma_log2_weight_denom =
slice_hdr->pred_weight_table.luma_log2_weight_denom +
slice_hdr->pred_weight_table.delta_chroma_log2_weight_denom;
if (slice_hdr->pps->sps->chroma_array_type != 0) {
for (i = 0; i <= slice_hdr->num_ref_idx_l0_active_minus1; i++) {
if (!slice_hdr->pred_weight_table.chroma_weight_l0_flag[i])
continue;
for (j = 0; j < 2; j++) {
gint16 delta_chroma_offset_l0 =
slice_hdr->pred_weight_table.delta_chroma_offset_l0[i][j];
gint chroma_offset;
params->pred_weight_table.delta_chroma_weight_l0[i][j] =
slice_hdr->pred_weight_table.delta_chroma_weight_l0[i][j];
/* Find ChromaWeightL0 */
chroma_weight = (1 << chroma_log2_weight_denom) +
slice_hdr->pred_weight_table.delta_chroma_weight_l0[i][j];
chroma_offset = WpOffsetHalfRangeC + delta_chroma_offset_l0 -
((WpOffsetHalfRangeC * chroma_weight) >> chroma_log2_weight_denom);
/* 7-56 */
params->pred_weight_table.chroma_offset_l0[i][j] =
CLAMP (chroma_offset, -WpOffsetHalfRangeC, WpOffsetHalfRangeC - 1);
}
}
}
/* Skip l1 if this is not a B-Frame. */
if (!GST_H265_IS_B_SLICE (slice_hdr))
return;
for (i = 0; i <= slice_hdr->num_ref_idx_l1_active_minus1; i++) {
if (!slice_hdr->pred_weight_table.luma_weight_l1_flag[i])
continue;
params->pred_weight_table.delta_luma_weight_l1[i] =
slice_hdr->pred_weight_table.delta_luma_weight_l1[i];
params->pred_weight_table.luma_offset_l1[i] =
slice_hdr->pred_weight_table.luma_offset_l1[i];
}
if (slice_hdr->pps->sps->chroma_array_type != 0) {
for (i = 0; i <= slice_hdr->num_ref_idx_l1_active_minus1; i++) {
if (!slice_hdr->pred_weight_table.chroma_weight_l1_flag[i])
continue;
for (j = 0; j < 2; j++) {
gint16 delta_chroma_offset_l1 =
slice_hdr->pred_weight_table.delta_chroma_offset_l1[i][j];
gint chroma_offset;
params->pred_weight_table.delta_chroma_weight_l1[i][j] =
slice_hdr->pred_weight_table.delta_chroma_weight_l1[i][j];
/* Find ChromaWeightL1 */
chroma_weight = (1 << chroma_log2_weight_denom) +
slice_hdr->pred_weight_table.delta_chroma_weight_l1[i][j];
chroma_offset = WpOffsetHalfRangeC + delta_chroma_offset_l1 -
((WpOffsetHalfRangeC * chroma_weight) >> chroma_log2_weight_denom);
/* 7-56 */
params->pred_weight_table.chroma_offset_l1[i][j] =
CLAMP (chroma_offset, -WpOffsetHalfRangeC, WpOffsetHalfRangeC - 1);
}
}
}
}
static guint8
lookup_dpb_index (struct v4l2_hevc_dpb_entry dpb[16], GstH265Picture * ref_pic)
{
guint64 ref_ts;
gint i;
/* Reference list may have wholes in case a ref is missing, we should mark
* the whole and avoid moving items in the list */
if (!ref_pic)
return 0xff;
ref_ts = GST_CODEC_PICTURE_TS_NS (ref_pic);
for (i = 0; i < 16; i++) {
if (dpb[i].timestamp == ref_ts)
return i;
}
return 0xff;
}
static void
gst_v4l2_codec_h265_dec_fill_references (GstV4l2CodecH265Dec * self,
GArray * ref_pic_list0, GArray * ref_pic_list1)
{
struct v4l2_ctrl_hevc_slice_params *slice_params;
struct v4l2_ctrl_hevc_decode_params *decode_params = &self->decode_params;
gint i;
slice_params = &g_array_index (self->slice_params,
struct v4l2_ctrl_hevc_slice_params, self->num_slices - 1);
memset (slice_params->ref_idx_l0, 0xff, sizeof (slice_params->ref_idx_l0));
memset (slice_params->ref_idx_l1, 0xff, sizeof (slice_params->ref_idx_l1));
for (i = 0; i < ref_pic_list0->len; i++) {
GstH265Picture *ref_pic =
g_array_index (ref_pic_list0, GstH265Picture *, i);
slice_params->ref_idx_l0[i] =
lookup_dpb_index (decode_params->dpb, ref_pic);
}
for (i = 0; i < ref_pic_list1->len; i++) {
GstH265Picture *ref_pic =
g_array_index (ref_pic_list1, GstH265Picture *, i);
slice_params->ref_idx_l1[i] =
lookup_dpb_index (decode_params->dpb, ref_pic);
}
}
static GstFlowReturn
gst_v4l2_codec_h265_dec_new_sequence (GstH265Decoder * decoder,
const GstH265SPS * sps, gint max_dpb_size)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
gint crop_width = sps->width;
gint crop_height = sps->height;
gboolean negotiation_needed = FALSE;
if (self->vinfo.finfo->format == GST_VIDEO_FORMAT_UNKNOWN)
negotiation_needed = TRUE;
/* TODO check if CREATE_BUFS is supported, and simply grow the pool */
if (self->min_pool_size < max_dpb_size) {
self->min_pool_size = max_dpb_size;
negotiation_needed = TRUE;
}
self->need_crop = FALSE;
if (sps->conformance_window_flag) {
crop_width = sps->crop_rect_width;
crop_height = sps->crop_rect_height;
self->crop_rect_width = sps->crop_rect_width;
self->crop_rect_height = sps->crop_rect_height;
self->crop_rect_x = sps->crop_rect_x;
self->crop_rect_y = sps->crop_rect_y;
/* conformance_window_flag could be set but with zeroed
* parameters so check if we really need to crop */
self->need_crop |= self->crop_rect_width != sps->width;
self->need_crop |= self->crop_rect_height != sps->height;
self->need_crop |= self->crop_rect_x != 0;
self->need_crop |= self->crop_rect_y != 0;
}
/* TODO Check if current buffers are large enough, and reuse them */
if (self->display_width != crop_width || self->display_height != crop_height
|| self->coded_width != sps->width || self->coded_height != sps->height) {
self->display_width = crop_width;
self->display_height = crop_height;
self->coded_width = sps->width;
self->coded_height = sps->height;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Resolution changed to %dx%d (%ix%i)",
self->display_width, self->display_height,
self->coded_width, self->coded_height);
}
if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) {
self->bitdepth = sps->bit_depth_luma_minus8 + 8;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Bitdepth changed to %u", self->bitdepth);
}
if (self->chroma_format_idc != sps->chroma_format_idc) {
self->chroma_format_idc = sps->chroma_format_idc;
negotiation_needed = TRUE;
GST_INFO_OBJECT (self, "Chroma format changed to %i",
self->chroma_format_idc);
}
gst_v4l2_codec_h265_dec_fill_sequence (self, sps);
if (negotiation_needed) {
gst_v4l2_codec_h265_dec_streamoff (self);
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return GST_FLOW_NOT_NEGOTIATED;
}
}
/* Check if we can zero-copy buffers */
if (!self->has_videometa) {
GstVideoInfo ref_vinfo;
gint i;
gst_video_info_set_format (&ref_vinfo, GST_VIDEO_INFO_FORMAT (&self->vinfo),
self->display_width, self->display_height);
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&self->vinfo); i++) {
if (self->vinfo.stride[i] != ref_vinfo.stride[i] ||
self->vinfo.offset[i] != ref_vinfo.offset[i]) {
GST_WARNING_OBJECT (self,
"GstVideoMeta support required, copying frames.");
self->copy_frames = TRUE;
break;
}
}
} else {
self->copy_frames = self->need_crop;
}
return GST_FLOW_OK;
}
static gboolean
gst_v4l2_codec_h265_dec_ensure_bitstream (GstV4l2CodecH265Dec * self)
{
if (self->bitstream)
goto done;
self->bitstream = gst_v4l2_codec_allocator_alloc (self->sink_allocator);
if (!self->bitstream) {
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Not enough memory to decode H265 stream."), (NULL));
return FALSE;
}
if (!gst_memory_map (self->bitstream, &self->bitstream_map, GST_MAP_WRITE)) {
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("Could not access bitstream memory for writing"), (NULL));
g_clear_pointer (&self->bitstream, gst_memory_unref);
return FALSE;
}
done:
/* We use this field to track how much we have written */
self->bitstream_map.size = 0;
return TRUE;
}
static void
gst_v4l2_codec_h265_dec_fill_decode_params (GstV4l2CodecH265Dec * self,
GstH265Picture * picture, GstH265Slice * slice, GstH265Dpb * dpb)
{
GstH265Decoder *decoder = (GstH265Decoder *) self;
GArray *refs = gst_h265_dpb_get_pictures_all (dpb);
gint i;
/* *INDENT-OFF* */
self->decode_params = (struct v4l2_ctrl_hevc_decode_params) {
.pic_order_cnt_val = picture->pic_order_cnt,
.num_poc_st_curr_before = decoder->NumPocStCurrBefore,
.num_poc_st_curr_after = decoder->NumPocStCurrAfter,
.num_poc_lt_curr = decoder->NumPocLtCurr,
.num_delta_pocs_of_ref_rps_idx = slice->header.short_term_ref_pic_sets.NumDeltaPocsOfRefRpsIdx,
.flags =
(GST_H265_IS_NAL_TYPE_IRAP (slice->nalu.type) ? V4L2_HEVC_DECODE_PARAM_FLAG_IRAP_PIC : 0) |
(GST_H265_IS_NAL_TYPE_IDR (slice->nalu.type) ? V4L2_HEVC_DECODE_PARAM_FLAG_IDR_PIC : 0) |
(slice->header.no_output_of_prior_pics_flag ? V4L2_HEVC_DECODE_PARAM_FLAG_NO_OUTPUT_OF_PRIOR : 0),
};
/* *INDENT-ON* */
for (i = 0; i < refs->len; i++) {
GstH265Picture *ref_pic = g_array_index (refs, GstH265Picture *, i);
if (!ref_pic->ref)
continue;
/* *INDENT-OFF* */
self->decode_params.dpb[self->decode_params.num_active_dpb_entries++] =
(struct v4l2_hevc_dpb_entry) {
/*
* The reference is multiplied by 1000 because it's wassed as micro
* seconds and this TS is nanosecond.
*/
.timestamp = (guint64) GST_CODEC_PICTURE_FRAME_NUMBER (ref_pic) * 1000,
.flags = ref_pic->long_term ? V4L2_HEVC_DPB_ENTRY_LONG_TERM_REFERENCE : 0,
.field_pic = ref_pic->pic_struct,
.pic_order_cnt_val = ref_pic->pic_order_cnt,
};
/* *INDENT-ON* */
}
for (i = 0; i < 16; i++) {
self->decode_params.poc_st_curr_before[i] =
lookup_dpb_index (self->decode_params.dpb,
decoder->RefPicSetStCurrBefore[i]);
self->decode_params.poc_st_curr_after[i] =
lookup_dpb_index (self->decode_params.dpb,
decoder->RefPicSetStCurrAfter[i]);
self->decode_params.poc_lt_curr[i] =
lookup_dpb_index (self->decode_params.dpb, decoder->RefPicSetLtCurr[i]);
}
g_array_unref (refs);
}
static GstFlowReturn
gst_v4l2_codec_h265_dec_start_picture (GstH265Decoder * decoder,
GstH265Picture * picture, GstH265Slice * slice, GstH265Dpb * dpb)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
/* FIXME base class should not call us if negotiation failed */
if (!self->sink_allocator)
return GST_FLOW_NOT_NEGOTIATED;
if (!gst_v4l2_codec_h265_dec_ensure_bitstream (self))
return GST_FLOW_ERROR;
/* The base class will only emit new_sequence for allocation related changes
* in the SPS, make sure to keep the SPS upt-to-date */
if (slice->header.pps->sps->id != self->sps.seq_parameter_set_id)
gst_v4l2_codec_h265_dec_fill_sequence (self, slice->header.pps->sps);
gst_v4l2_codec_h265_dec_fill_pps (self, slice->header.pps);
gst_v4l2_codec_h265_dec_fill_scaling_matrix (self, slice->header.pps);
gst_v4l2_codec_h265_dec_fill_decode_params (self, picture, slice, dpb);
self->first_slice = TRUE;
self->num_slices = 0;
g_array_set_size (self->entry_point_offsets, 0);
return GST_FLOW_OK;
}
static gboolean
gst_v4l2_codec_h265_dec_crop_output_buffer (GstV4l2CodecH265Dec * self,
GstVideoFrame * dest_frame, GstVideoFrame * src_frame)
{
GstVideoInfo dst_info = dest_frame->info;
dst_info.fps_n = src_frame->info.fps_n;
dst_info.fps_d = src_frame->info.fps_d;
if (self->convert) {
gboolean new_convert = FALSE;
gint x = 0, y = 0, width = 0, height = 0;
const GstStructure *config = gst_video_converter_get_config (self->convert);
if (!gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_X, &x)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_Y, &y)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_WIDTH,
&width)
|| !gst_structure_get_int (config, GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT,
&height))
new_convert = TRUE;
new_convert |= (self->crop_rect_x != x);
new_convert |= (self->crop_rect_y != y);
new_convert |= (self->crop_rect_width != width);
new_convert |= (self->crop_rect_height != height);
/* No need to check dest, it always has (0,0) -> (width, height) */
if (new_convert)
g_clear_pointer (&self->convert, gst_video_converter_free);
}
if (!self->convert) {
self->convert = gst_video_converter_new (&src_frame->info, &dst_info,
gst_structure_new ("options",
GST_VIDEO_CONVERTER_OPT_DITHER_METHOD,
GST_TYPE_VIDEO_DITHER_METHOD, GST_VIDEO_DITHER_NONE,
GST_VIDEO_CONVERTER_OPT_DITHER_QUANTIZATION,
G_TYPE_UINT, 0,
GST_VIDEO_CONVERTER_OPT_CHROMA_MODE,
GST_TYPE_VIDEO_CHROMA_MODE, GST_VIDEO_CHROMA_MODE_NONE,
GST_VIDEO_CONVERTER_OPT_MATRIX_MODE,
GST_TYPE_VIDEO_MATRIX_MODE, GST_VIDEO_MATRIX_MODE_NONE,
GST_VIDEO_CONVERTER_OPT_SRC_X, G_TYPE_INT, self->crop_rect_x,
GST_VIDEO_CONVERTER_OPT_SRC_Y, G_TYPE_INT, self->crop_rect_y,
GST_VIDEO_CONVERTER_OPT_SRC_WIDTH, G_TYPE_INT,
self->crop_rect_width, GST_VIDEO_CONVERTER_OPT_SRC_HEIGHT,
G_TYPE_INT, self->crop_rect_height, GST_VIDEO_CONVERTER_OPT_DEST_X,
G_TYPE_INT, 0, GST_VIDEO_CONVERTER_OPT_DEST_Y, G_TYPE_INT, 0,
GST_VIDEO_CONVERTER_OPT_DEST_WIDTH, G_TYPE_INT, self->display_width,
GST_VIDEO_CONVERTER_OPT_DEST_HEIGHT, G_TYPE_INT,
self->display_height, NULL));
if (!self->convert) {
GST_WARNING_OBJECT (self, "failed to create a video convert");
return FALSE;
}
}
gst_video_converter_frame (self->convert, src_frame, dest_frame);
return TRUE;
}
static gboolean
gst_v4l2_codec_h265_dec_copy_output_buffer (GstV4l2CodecH265Dec * self,
GstVideoCodecFrame * codec_frame)
{
GstVideoFrame src_frame;
GstVideoFrame dest_frame;
GstVideoInfo dest_vinfo;
GstBuffer *buffer;
gst_video_info_set_format (&dest_vinfo, GST_VIDEO_INFO_FORMAT (&self->vinfo),
self->display_width, self->display_height);
buffer = gst_video_decoder_allocate_output_buffer (GST_VIDEO_DECODER (self));
if (!buffer)
goto fail;
if (!gst_video_frame_map (&src_frame, &self->vinfo,
codec_frame->output_buffer, GST_MAP_READ))
goto fail;
if (!gst_video_frame_map (&dest_frame, &dest_vinfo, buffer, GST_MAP_WRITE)) {
gst_video_frame_unmap (&dest_frame);
goto fail;
}
if (self->need_crop) {
if (!gst_v4l2_codec_h265_dec_crop_output_buffer (self, &dest_frame,
&src_frame)) {
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
GST_ERROR_OBJECT (self, "fail to apply the video crop.");
goto fail;
}
} else {
/* gst_video_frame_copy can crop this, but does not know, so let make it
* think it's all right */
GST_VIDEO_INFO_WIDTH (&src_frame.info) = self->display_width;
GST_VIDEO_INFO_HEIGHT (&src_frame.info) = self->display_height;
if (!gst_video_frame_copy (&dest_frame, &src_frame)) {
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
goto fail;
}
}
gst_video_frame_unmap (&src_frame);
gst_video_frame_unmap (&dest_frame);
gst_buffer_replace (&codec_frame->output_buffer, buffer);
gst_buffer_unref (buffer);
return TRUE;
fail:
GST_ERROR_OBJECT (self, "Failed copy output buffer.");
return FALSE;
}
static GstFlowReturn
gst_v4l2_codec_h265_dec_output_picture (GstH265Decoder * decoder,
GstVideoCodecFrame * frame, GstH265Picture * picture)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstV4l2Request *request = gst_h265_picture_get_user_data (picture);
GstCodecPicture *codec_picture = GST_CODEC_PICTURE (picture);
gint ret;
if (codec_picture->discont_state) {
if (!gst_video_decoder_negotiate (vdec)) {
GST_ERROR_OBJECT (vdec, "Could not re-negotiate with updated state");
return FALSE;
}
}
GST_DEBUG_OBJECT (self, "Output picture %u",
codec_picture->system_frame_number);
ret = gst_v4l2_request_set_done (request);
if (ret == 0) {
GST_ELEMENT_ERROR (self, STREAM, DECODE,
("Decoding frame %u took too long", codec_picture->system_frame_number),
(NULL));
goto error;
} else if (ret < 0) {
GST_ELEMENT_ERROR (self, STREAM, DECODE,
("Decoding request failed: %s", g_strerror (errno)), (NULL));
goto error;
}
g_return_val_if_fail (frame->output_buffer, GST_FLOW_ERROR);
if (gst_v4l2_request_failed (request)) {
GST_ELEMENT_ERROR (self, STREAM, DECODE,
("Failed to decode frame %u", codec_picture->system_frame_number),
(NULL));
goto error;
}
/* Hold on reference buffers for the rest of the picture lifetime */
gst_h265_picture_set_user_data (picture,
gst_buffer_ref (frame->output_buffer), (GDestroyNotify) gst_buffer_unref);
if (self->copy_frames)
gst_v4l2_codec_h265_dec_copy_output_buffer (self, frame);
gst_h265_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_video_decoder_drop_frame (vdec, frame);
gst_h265_picture_unref (picture);
return GST_FLOW_ERROR;
}
static void
gst_v4l2_codec_h265_dec_reset_picture (GstV4l2CodecH265Dec * self)
{
if (self->bitstream) {
if (self->bitstream_map.memory)
gst_memory_unmap (self->bitstream, &self->bitstream_map);
g_clear_pointer (&self->bitstream, gst_memory_unref);
self->bitstream_map = (GstMapInfo) GST_MAP_INFO_INIT;
}
self->num_slices = 0;
g_array_set_size (self->entry_point_offsets, 0);
}
static gboolean
gst_v4l2_codec_h265_dec_ensure_output_buffer (GstV4l2CodecH265Dec * self,
GstVideoCodecFrame * frame)
{
GstBuffer *buffer;
GstFlowReturn flow_ret;
if (frame->output_buffer)
return TRUE;
flow_ret = gst_buffer_pool_acquire_buffer (GST_BUFFER_POOL (self->src_pool),
&buffer, NULL);
if (flow_ret != GST_FLOW_OK) {
if (flow_ret == GST_FLOW_FLUSHING)
GST_DEBUG_OBJECT (self, "Frame decoding aborted, we are flushing.");
else
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("No more picture buffer available."), (NULL));
return FALSE;
}
frame->output_buffer = buffer;
return TRUE;
}
static gboolean
gst_v4l2_codec_h265_dec_submit_bitstream (GstV4l2CodecH265Dec * self,
GstH265Picture * picture, guint flags)
{
GstV4l2Request *prev_request, *request = NULL;
gsize bytesused;
gboolean ret = FALSE;
gint num_controls = 0;
/* *INDENT-OFF* */
/* Reserve space for controls */
struct v4l2_ext_control control[] = {
{ }, /* SPS */
{ }, /* PPS */
{ }, /* DECODE_PARAMS */
{ }, /* SLICE_PARAMS */
{ }, /* SCALING_MATRIX */
{ }, /* ENTRY_POINT_OFFSETS */
};
/* *INDENT-ON* */
prev_request = gst_h265_picture_get_user_data (picture);
bytesused = self->bitstream_map.size;
gst_memory_unmap (self->bitstream, &self->bitstream_map);
self->bitstream_map = (GstMapInfo) GST_MAP_INFO_INIT;
gst_memory_resize (self->bitstream, 0, bytesused);
if (prev_request) {
request = gst_v4l2_decoder_alloc_sub_request (self->decoder, prev_request,
self->bitstream);
} else {
GstVideoCodecFrame *frame;
guint32 system_frame_number = GST_CODEC_PICTURE_FRAME_NUMBER (picture);
frame = gst_video_decoder_get_frame (GST_VIDEO_DECODER (self),
system_frame_number);
g_return_val_if_fail (frame, FALSE);
if (!gst_v4l2_codec_h265_dec_ensure_output_buffer (self, frame))
goto done;
request = gst_v4l2_decoder_alloc_request (self->decoder,
system_frame_number, self->bitstream, frame->output_buffer);
gst_video_codec_frame_unref (frame);
}
if (!request) {
GST_ELEMENT_ERROR (self, RESOURCE, NO_SPACE_LEFT,
("Failed to allocate a media request object."), (NULL));
goto done;
}
if (self->need_sequence) {
control[num_controls].id = V4L2_CID_STATELESS_HEVC_SPS;
control[num_controls].ptr = &self->sps;
control[num_controls].size = sizeof (self->sps);
num_controls++;
self->need_sequence = FALSE;
}
if (self->first_slice) {
control[num_controls].id = V4L2_CID_STATELESS_HEVC_PPS;
control[num_controls].ptr = &self->pps;
control[num_controls].size = sizeof (self->pps);
num_controls++;
if (self->support_scaling_matrix) {
control[num_controls].id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX;
control[num_controls].ptr = &self->scaling_matrix;
control[num_controls].size = sizeof (self->scaling_matrix);
num_controls++;
}
control[num_controls].id = V4L2_CID_STATELESS_HEVC_DECODE_PARAMS;
control[num_controls].ptr = &self->decode_params;
control[num_controls].size = sizeof (self->decode_params);
num_controls++;
self->first_slice = FALSE;
}
/* Slice parameters are only filled for slice based or frame based with
* slices decoders */
if (self->num_slices && !is_frame_based (self)) {
control[num_controls].id = V4L2_CID_STATELESS_HEVC_SLICE_PARAMS;
control[num_controls].ptr = self->slice_params->data;
control[num_controls].size = g_array_get_element_size (self->slice_params)
* self->num_slices;
num_controls++;
if (self->support_entry_point_offsets && self->entry_point_offsets->len) {
control[num_controls].id = V4L2_CID_STATELESS_HEVC_ENTRY_POINT_OFFSETS;
control[num_controls].ptr = self->entry_point_offsets->data;
control[num_controls].size =
g_array_get_element_size (self->entry_point_offsets)
* self->entry_point_offsets->len;
num_controls++;
}
}
if (num_controls > G_N_ELEMENTS (control))
g_error ("Set too many controls, increase control[] size");
if (!gst_v4l2_decoder_set_controls (self->decoder, request, control,
num_controls)) {
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("Driver did not accept the bitstream parameters."), (NULL));
goto done;
}
if (!gst_v4l2_request_queue (request, flags)) {
GST_ELEMENT_ERROR (self, RESOURCE, WRITE,
("Driver did not accept the decode request."), (NULL));
goto done;
}
gst_h265_picture_set_user_data (picture, g_steal_pointer (&request),
(GDestroyNotify) gst_v4l2_request_unref);
ret = TRUE;
done:
if (request)
gst_v4l2_request_unref (request);
gst_v4l2_codec_h265_dec_reset_picture (self);
return ret;
}
static GstFlowReturn
gst_v4l2_codec_h265_dec_decode_slice (GstH265Decoder * decoder,
GstH265Picture * picture, GstH265Slice * slice,
GArray * ref_pic_list0, GArray * ref_pic_list1)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
gsize sc_off = 0;
gsize nal_size;
guint8 *bitstream_data;
if (!is_frame_based (self)) {
if (is_slice_based (self)) {
if (self->bitstream_map.size) {
/* In slice mode, we submit the pending slice asking the accelerator to
* hold on the picture */
if (!gst_v4l2_codec_h265_dec_submit_bitstream (self, picture,
V4L2_BUF_FLAG_M2M_HOLD_CAPTURE_BUF)
|| !gst_v4l2_codec_h265_dec_ensure_bitstream (self))
return GST_FLOW_ERROR;
}
}
/* in frame based mode with slices, we need to provide the required data for
* the whole frame, therefore we don't submit the bitstream here */
gst_v4l2_codec_h265_dec_fill_slice_params (self, slice, picture);
gst_v4l2_codec_h265_dec_fill_references (self, ref_pic_list0,
ref_pic_list1);
}
/* if it is the first slice segment provide the short and long term
* reference pictures set size */
if (slice->header.first_slice_segment_in_pic_flag) {
struct v4l2_ctrl_hevc_decode_params *decode_params = &self->decode_params;
decode_params->short_term_ref_pic_set_size =
slice->header.short_term_ref_pic_set_size;
decode_params->long_term_ref_pic_set_size =
slice->header.long_term_ref_pic_set_size;
}
bitstream_data = self->bitstream_map.data + self->bitstream_map.size;
if (needs_start_codes (self))
sc_off = 3;
nal_size = sc_off + slice->nalu.size;
if (self->bitstream_map.size + nal_size > self->bitstream_map.maxsize) {
GST_ELEMENT_ERROR (decoder, RESOURCE, NO_SPACE_LEFT,
("Not enough space to send all slice of an H265 frame."), (NULL));
return GST_FLOW_ERROR;
}
if (needs_start_codes (self)) {
bitstream_data[0] = 0x00;
bitstream_data[1] = 0x00;
bitstream_data[2] = 0x01;
}
memcpy (bitstream_data + sc_off, slice->nalu.data + slice->nalu.offset,
slice->nalu.size);
self->bitstream_map.size += nal_size;
return GST_FLOW_OK;
}
static GstFlowReturn
gst_v4l2_codec_h265_dec_end_picture (GstH265Decoder * decoder,
GstH265Picture * picture)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
if (!gst_v4l2_codec_h265_dec_submit_bitstream (self, picture, 0))
return GST_FLOW_ERROR;
return GST_FLOW_OK;
}
static guint
gst_v4l2_codec_h265_dec_get_preferred_output_delay (GstH265Decoder * decoder,
gboolean is_live)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
guint delay;
if (is_live)
delay = 0;
else
delay = 1;
gst_v4l2_decoder_set_render_delay (self->decoder, delay);
return delay;
}
static void
gst_v4l2_codec_h265_dec_set_flushing (GstV4l2CodecH265Dec * self,
gboolean flushing)
{
if (self->sink_allocator)
gst_v4l2_codec_allocator_set_flushing (self->sink_allocator, flushing);
if (self->src_allocator)
gst_v4l2_codec_allocator_set_flushing (self->src_allocator, flushing);
}
static gboolean
gst_v4l2_codec_h265_dec_flush (GstVideoDecoder * decoder)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
GST_DEBUG_OBJECT (self, "Flushing decoder state.");
gst_v4l2_decoder_flush (self->decoder);
gst_v4l2_codec_h265_dec_set_flushing (self, FALSE);
return GST_VIDEO_DECODER_CLASS (parent_class)->flush (decoder);
}
static gboolean
gst_v4l2_codec_h265_dec_sink_event (GstVideoDecoder * decoder, GstEvent * event)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (decoder);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
GST_DEBUG_OBJECT (self, "flush start");
gst_v4l2_codec_h265_dec_set_flushing (self, TRUE);
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->sink_event (decoder, event);
}
static GstStateChangeReturn
gst_v4l2_codec_h265_dec_change_state (GstElement * element,
GstStateChange transition)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (element);
if (transition == GST_STATE_CHANGE_PAUSED_TO_READY)
gst_v4l2_codec_h265_dec_set_flushing (self, TRUE);
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
}
static void
gst_v4l2_codec_h265_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object);
GObject *dec = G_OBJECT (self->decoder);
switch (prop_id) {
default:
gst_v4l2_decoder_set_property (dec, prop_id - PROP_LAST, value, pspec);
break;
}
}
static void
gst_v4l2_codec_h265_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object);
GObject *dec = G_OBJECT (self->decoder);
switch (prop_id) {
default:
gst_v4l2_decoder_get_property (dec, prop_id - PROP_LAST, value, pspec);
break;
}
}
static void
gst_v4l2_codec_h265_dec_init (GstV4l2CodecH265Dec * self)
{
}
static void
gst_v4l2_codec_h265_dec_subinit (GstV4l2CodecH265Dec * self,
GstV4l2CodecH265DecClass * klass)
{
self->decoder = gst_v4l2_decoder_new (klass->device);
gst_video_info_init (&self->vinfo);
gst_video_info_dma_drm_init (&self->vinfo_drm);
self->slice_params = g_array_sized_new (FALSE, TRUE,
sizeof (struct v4l2_ctrl_hevc_slice_params), 4);
g_array_set_size (self->slice_params, 4);
self->entry_point_offsets = g_array_sized_new (FALSE, TRUE,
sizeof (guint32), 4);
}
static void
gst_v4l2_codec_h265_dec_dispose (GObject * object)
{
GstV4l2CodecH265Dec *self = GST_V4L2_CODEC_H265_DEC (object);
g_clear_object (&self->decoder);
g_clear_pointer (&self->slice_params, g_array_unref);
g_clear_pointer (&self->entry_point_offsets, g_array_unref);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_v4l2_codec_h265_dec_class_init (GstV4l2CodecH265DecClass * klass)
{
}
static void
gst_v4l2_codec_h265_dec_subclass_init (GstV4l2CodecH265DecClass * klass,
GstV4l2CodecDevice * device)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstH265DecoderClass *h265decoder_class = GST_H265_DECODER_CLASS (klass);
gobject_class->set_property = gst_v4l2_codec_h265_dec_set_property;
gobject_class->get_property = gst_v4l2_codec_h265_dec_get_property;
gobject_class->dispose = gst_v4l2_codec_h265_dec_dispose;
gst_element_class_set_static_metadata (element_class,
"V4L2 Stateless H.265 Video Decoder",
"Codec/Decoder/Video/Hardware",
"A V4L2 based H.265 video decoder",
"Nicolas Dufresne <nicolas.dufresne@collabora.com>");
gst_element_class_add_static_pad_template (element_class, &sink_template);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
device->src_caps));
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_change_state);
decoder_class->open = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_close);
decoder_class->stop = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_stop);
decoder_class->negotiate =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_decide_allocation);
decoder_class->flush = GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_flush);
decoder_class->sink_event =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_sink_event);
h265decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_new_sequence);
h265decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_output_picture);
h265decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_start_picture);
h265decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_decode_slice);
h265decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_end_picture);
h265decoder_class->get_preferred_output_delay =
GST_DEBUG_FUNCPTR (gst_v4l2_codec_h265_dec_get_preferred_output_delay);
klass->device = device;
gst_v4l2_decoder_install_properties (gobject_class, PROP_LAST, device);
}
void
gst_v4l2_codec_h265_dec_register (GstPlugin * plugin, GstV4l2Decoder * decoder,
GstV4l2CodecDevice * device, guint rank)
{
GstCaps *src_caps;
guint version;
GST_DEBUG_CATEGORY_INIT (v4l2_h265dec_debug, "v4l2codecs-h265dec", 0,
"V4L2 stateless h265 decoder");
if (!gst_v4l2_decoder_set_sink_fmt (decoder, V4L2_PIX_FMT_HEVC_SLICE,
320, 240, 8))
return;
/* Make sure that decoder support stateless H265 */
src_caps = gst_v4l2_decoder_enum_src_formats (decoder, &static_src_caps);
if (gst_caps_is_empty (src_caps)) {
GST_WARNING ("Not registering H265 decoder since it produces no "
"supported format");
goto done;
}
/* Get all supported pixel formats for H265 */
device->src_caps =
gst_v4l2_decoder_enum_all_src_formats (decoder, &static_src_caps);
version = gst_v4l2_decoder_get_version (decoder);
if (version < V4L2_MIN_KERNEL_VERSION)
GST_WARNING ("V4L2 API v%u.%u too old, at least v%u.%u required",
(version >> 16) & 0xff, (version >> 8) & 0xff,
V4L2_MIN_KERNEL_VER_MAJOR, V4L2_MIN_KERNEL_VER_MINOR);
if (!gst_v4l2_decoder_h265_api_check (decoder)) {
GST_WARNING ("Not registering H265 decoder as it failed ABI check.");
goto done;
}
gst_v4l2_decoder_register (plugin, GST_TYPE_V4L2_CODEC_H265_DEC,
(GClassInitFunc) gst_v4l2_codec_h265_dec_subclass_init,
gst_mini_object_ref (GST_MINI_OBJECT (device)),
(GInstanceInitFunc) gst_v4l2_codec_h265_dec_subinit,
"v4l2sl%sh265dec", device, rank, NULL);
done:
gst_caps_unref (src_caps);
}
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