gstreamer/sys/nvcodec/gstnvh264dec.c

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/* GStreamer
* Copyright (C) 2017 Ericsson AB. All rights reserved.
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* 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.
*
* Copyright 2015 The Chromium Authors. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstnvh264dec.h"
#include "gstcudautils.h"
#include "gstnvdecoder.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_nv_h264_dec_debug);
#define GST_CAT_DEFAULT gst_nv_h264_dec_debug
struct _GstNvH264Dec
{
GstH264Decoder parent;
GstVideoCodecState *output_state;
const GstH264SPS *last_sps;
const GstH264PPS *last_pps;
GstCudaContext *context;
CUstream cuda_stream;
GstNvDecoder *decoder;
CUVIDPICPARAMS params;
/* slice buffer which will be passed to CUVIDPICPARAMS::pBitstreamData */
guint8 *bitstream_buffer;
/* allocated memory size of bitstream_buffer */
gsize bitstream_buffer_alloc_size;
/* current offset of bitstream_buffer (per frame) */
gsize bitstream_buffer_offset;
guint *slice_offsets;
guint slice_offsets_alloc_len;
guint num_slices;
guint width, height;
guint coded_width, coded_height;
guint bitdepth;
guint chroma_format_idc;
gint max_dpb_size;
GstVideoFormat out_format;
/* For OpenGL interop. */
GstObject *gl_display;
GstObject *gl_context;
GstObject *other_gl_context;
GstNvDecoderOutputType output_type;
};
struct _GstNvH264DecClass
{
GstH264DecoderClass parent_class;
guint cuda_device_id;
};
#define gst_nv_h264_dec_parent_class parent_class
G_DEFINE_TYPE (GstNvH264Dec, gst_nv_h264_dec, GST_TYPE_H264_DECODER);
static void gst_nv_h264_decoder_finalize (GObject * object);
static void gst_nv_h264_dec_set_context (GstElement * element,
GstContext * context);
static gboolean gst_nv_h264_dec_open (GstVideoDecoder * decoder);
static gboolean gst_nv_h264_dec_close (GstVideoDecoder * decoder);
static gboolean gst_nv_h264_dec_negotiate (GstVideoDecoder * decoder);
static gboolean gst_nv_h264_dec_decide_allocation (GstVideoDecoder *
decoder, GstQuery * query);
static gboolean gst_nv_h264_dec_src_query (GstVideoDecoder * decoder,
GstQuery * query);
/* GstH264Decoder */
static gboolean gst_nv_h264_dec_new_sequence (GstH264Decoder * decoder,
const GstH264SPS * sps, gint max_dpb_size);
static gboolean gst_nv_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture);
static GstFlowReturn gst_nv_h264_dec_output_picture (GstH264Decoder *
decoder, GstVideoCodecFrame * frame, GstH264Picture * picture);
static gboolean gst_nv_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb);
static gboolean gst_nv_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1);
static gboolean gst_nv_h264_dec_end_picture (GstH264Decoder * decoder,
GstH264Picture * picture);
static guint
gst_nv_h264_dec_get_preferred_output_delay (GstH264Decoder * decoder,
gboolean live);
static void
gst_nv_h264_dec_class_init (GstNvH264DecClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstVideoDecoderClass *decoder_class = GST_VIDEO_DECODER_CLASS (klass);
GstH264DecoderClass *h264decoder_class = GST_H264_DECODER_CLASS (klass);
/**
* GstNvH264Dec
*
* Since: 1.18
*/
object_class->finalize = gst_nv_h264_decoder_finalize;
element_class->set_context = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_set_context);
decoder_class->open = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_open);
decoder_class->close = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_close);
decoder_class->negotiate = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_negotiate);
decoder_class->decide_allocation =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_decide_allocation);
decoder_class->src_query = GST_DEBUG_FUNCPTR (gst_nv_h264_dec_src_query);
h264decoder_class->new_sequence =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_new_sequence);
h264decoder_class->new_picture =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_new_picture);
h264decoder_class->output_picture =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_output_picture);
h264decoder_class->start_picture =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_start_picture);
h264decoder_class->decode_slice =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_decode_slice);
h264decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_end_picture);
h264decoder_class->get_preferred_output_delay =
GST_DEBUG_FUNCPTR (gst_nv_h264_dec_get_preferred_output_delay);
GST_DEBUG_CATEGORY_INIT (gst_nv_h264_dec_debug,
"nvh264dec", 0, "Nvidia H.264 Decoder");
2020-06-23 00:51:48 +00:00
gst_type_mark_as_plugin_api (GST_TYPE_NV_H264_DEC, 0);
}
static void
gst_nv_h264_dec_init (GstNvH264Dec * self)
{
}
static void
gst_nv_h264_decoder_finalize (GObject * object)
{
GstNvH264Dec *self = GST_NV_H264_DEC (object);
g_free (self->bitstream_buffer);
g_free (self->slice_offsets);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_nv_h264_dec_set_context (GstElement * element, GstContext * context)
{
GstNvH264Dec *self = GST_NV_H264_DEC (element);
GstNvH264DecClass *klass = GST_NV_H264_DEC_GET_CLASS (self);
GST_DEBUG_OBJECT (self, "set context %s",
gst_context_get_context_type (context));
gst_nv_decoder_set_context (element, context, klass->cuda_device_id,
&self->context, &self->gl_display, &self->other_gl_context);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
/* Clear all codec specific (e.g., SPS) data */
static void
gst_d3d11_h264_dec_reset (GstNvH264Dec * self)
{
self->width = 0;
self->height = 0;
self->coded_width = 0;
self->coded_height = 0;
self->bitdepth = 0;
self->chroma_format_idc = 0;
self->out_format = GST_VIDEO_FORMAT_UNKNOWN;
self->max_dpb_size = 0;
}
static gboolean
gst_nv_h264_dec_open (GstVideoDecoder * decoder)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
GstNvH264DecClass *klass = GST_NV_H264_DEC_GET_CLASS (self);
if (!gst_nv_decoder_ensure_element_data (GST_ELEMENT (self),
klass->cuda_device_id, &self->context, &self->cuda_stream,
&self->gl_display, &self->other_gl_context)) {
GST_ERROR_OBJECT (self, "Required element data is unavailable");
return FALSE;
}
gst_d3d11_h264_dec_reset (self);
return TRUE;
}
static gboolean
gst_nv_h264_dec_close (GstVideoDecoder * decoder)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
g_clear_pointer (&self->output_state, gst_video_codec_state_unref);
gst_clear_object (&self->decoder);
if (self->context && self->cuda_stream) {
if (gst_cuda_context_push (self->context)) {
gst_cuda_result (CuStreamDestroy (self->cuda_stream));
gst_cuda_context_pop (NULL);
}
}
gst_clear_object (&self->gl_context);
gst_clear_object (&self->other_gl_context);
gst_clear_object (&self->gl_display);
gst_clear_object (&self->context);
self->cuda_stream = NULL;
return TRUE;
}
static gboolean
gst_nv_h264_dec_negotiate (GstVideoDecoder * decoder)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
GstH264Decoder *h264dec = GST_H264_DECODER (decoder);
GST_DEBUG_OBJECT (self, "negotiate");
gst_nv_decoder_negotiate (decoder, h264dec->input_state, self->out_format,
self->width, self->height, self->gl_display, self->other_gl_context,
&self->gl_context, &self->output_state, &self->output_type);
/* TODO: add support D3D11 memory */
return GST_VIDEO_DECODER_CLASS (parent_class)->negotiate (decoder);
}
static gboolean
gst_nv_h264_dec_decide_allocation (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
gst_nv_decoder_decide_allocation (self->decoder, decoder, query,
self->gl_context, self->output_type);
return GST_VIDEO_DECODER_CLASS (parent_class)->decide_allocation
(decoder, query);
}
static gboolean
gst_nv_h264_dec_src_query (GstVideoDecoder * decoder, GstQuery * query)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_nv_decoder_handle_context_query (GST_ELEMENT (self), query,
self->context, self->gl_display, self->gl_context,
self->other_gl_context)) {
return TRUE;
}
break;
default:
break;
}
return GST_VIDEO_DECODER_CLASS (parent_class)->src_query (decoder, query);
}
static gboolean
gst_nv_h264_dec_new_sequence (GstH264Decoder * decoder, const GstH264SPS * sps,
gint max_dpb_size)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
gint crop_width, crop_height;
gboolean modified = FALSE;
GST_LOG_OBJECT (self, "new sequence");
if (sps->frame_cropping_flag) {
crop_width = sps->crop_rect_width;
crop_height = sps->crop_rect_height;
} else {
crop_width = sps->width;
crop_height = sps->height;
}
if (self->width != crop_width || self->height != crop_height ||
self->coded_width != sps->width || self->coded_height != sps->height) {
GST_INFO_OBJECT (self, "resolution changed %dx%d (%dx%d)",
crop_width, crop_height, sps->width, sps->height);
self->width = crop_width;
self->height = crop_height;
self->coded_width = sps->width;
self->coded_height = sps->height;
modified = TRUE;
}
if (self->bitdepth != sps->bit_depth_luma_minus8 + 8) {
GST_INFO_OBJECT (self, "bitdepth changed");
self->bitdepth = sps->bit_depth_luma_minus8 + 8;
modified = TRUE;
}
if (self->chroma_format_idc != sps->chroma_format_idc) {
GST_INFO_OBJECT (self, "chroma format changed");
self->chroma_format_idc = sps->chroma_format_idc;
modified = TRUE;
}
if (self->max_dpb_size < max_dpb_size) {
GST_INFO_OBJECT (self, "Requires larger DPB size (%d -> %d)",
self->max_dpb_size, max_dpb_size);
modified = TRUE;
}
if (modified || !self->decoder) {
GstVideoInfo info;
self->out_format = GST_VIDEO_FORMAT_UNKNOWN;
if (self->bitdepth == 8) {
if (self->chroma_format_idc == 1)
self->out_format = GST_VIDEO_FORMAT_NV12;
else {
GST_FIXME_OBJECT (self, "Could not support 8bits non-4:2:0 format");
}
} else if (self->bitdepth == 10) {
if (self->chroma_format_idc == 1)
self->out_format = GST_VIDEO_FORMAT_P010_10LE;
else {
GST_FIXME_OBJECT (self, "Could not support 10bits non-4:2:0 format");
}
}
if (self->out_format == GST_VIDEO_FORMAT_UNKNOWN) {
GST_ERROR_OBJECT (self, "Could not support bitdepth/chroma format");
return FALSE;
}
gst_clear_object (&self->decoder);
gst_video_info_set_format (&info,
self->out_format, self->width, self->height);
self->max_dpb_size = max_dpb_size;
/* FIXME: add support cudaVideoCodec_H264_SVC and cudaVideoCodec_H264_MVC */
self->decoder = gst_nv_decoder_new (self->context, cudaVideoCodec_H264,
&info,
/* Additional 2 buffers for margin */
max_dpb_size + 2);
if (!self->decoder) {
GST_ERROR_OBJECT (self, "Failed to create decoder");
return FALSE;
}
if (!gst_video_decoder_negotiate (GST_VIDEO_DECODER (self))) {
GST_ERROR_OBJECT (self, "Failed to negotiate with downstream");
return FALSE;
}
self->last_sps = NULL;
self->last_pps = NULL;
memset (&self->params, 0, sizeof (CUVIDPICPARAMS));
}
return TRUE;
}
static gboolean
gst_nv_h264_dec_new_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
GstNvDecoderFrame *nv_frame;
nv_frame = gst_nv_decoder_new_frame (self->decoder);
if (!nv_frame) {
GST_ERROR_OBJECT (self, "No available decoder frame");
return FALSE;
}
GST_LOG_OBJECT (self,
"New decoder frame %p (index %d)", nv_frame, nv_frame->index);
gst_h264_picture_set_user_data (picture,
nv_frame, (GDestroyNotify) gst_nv_decoder_frame_unref);
return TRUE;
}
static GstFlowReturn
gst_nv_h264_dec_output_picture (GstH264Decoder * decoder,
GstVideoCodecFrame * frame, GstH264Picture * picture)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
GstVideoDecoder *vdec = GST_VIDEO_DECODER (decoder);
GstNvDecoderFrame *decoder_frame;
gboolean ret G_GNUC_UNUSED = FALSE;
GST_LOG_OBJECT (self,
"Outputting picture %p (poc %d)", picture, picture->pic_order_cnt);
decoder_frame =
(GstNvDecoderFrame *) gst_h264_picture_get_user_data (picture);
if (!decoder_frame) {
GST_ERROR_OBJECT (self, "No decoder frame in picture %p", picture);
goto error;
}
frame->output_buffer = gst_video_decoder_allocate_output_buffer (vdec);
if (!frame->output_buffer) {
GST_ERROR_OBJECT (self, "Couldn't allocate output buffer");
goto error;
}
if (self->output_type == GST_NV_DECODER_OUTPUT_TYPE_GL) {
ret = gst_nv_decoder_finish_frame (self->decoder,
GST_NV_DECODER_OUTPUT_TYPE_GL, self->gl_context,
decoder_frame, frame->output_buffer);
/* FIXME: This is the case where OpenGL context of downstream glbufferpool
* belongs to non-nvidia (or different device).
* There should be enhancement to ensure nvdec has compatible OpenGL context
*/
if (!ret) {
GST_WARNING_OBJECT (self,
"Couldn't copy frame to GL memory, fallback to system memory");
self->output_type = GST_NV_DECODER_OUTPUT_TYPE_SYSTEM;
}
}
if (!ret) {
if (!gst_nv_decoder_finish_frame (self->decoder,
self->output_type, NULL, decoder_frame, frame->output_buffer)) {
GST_ERROR_OBJECT (self, "Failed to finish frame");
goto error;
}
}
gst_h264_picture_unref (picture);
return gst_video_decoder_finish_frame (vdec, frame);
error:
gst_video_decoder_drop_frame (vdec, frame);
gst_h264_picture_unref (picture);
return GST_FLOW_ERROR;
}
static GstNvDecoderFrame *
gst_nv_h264_dec_get_decoder_frame_from_picture (GstNvH264Dec * self,
GstH264Picture * picture)
{
GstNvDecoderFrame *frame;
frame = (GstNvDecoderFrame *) gst_h264_picture_get_user_data (picture);
if (!frame)
GST_DEBUG_OBJECT (self, "current picture does not have decoder frame");
return frame;
}
static void
gst_nv_h264_dec_fill_scaling_list_4x4 (const GstH264PPS * pps,
CUVIDH264PICPARAMS * params)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (params->WeightScale4x4); i++)
gst_h264_quant_matrix_4x4_get_raster_from_zigzag (params->WeightScale4x4[i],
pps->scaling_lists_4x4[i]);
}
static void
gst_nv_h264_dec_fill_scaling_list_8x8 (const GstH264PPS * pps,
CUVIDH264PICPARAMS * params)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (params->WeightScale8x8); i++) {
gst_h264_quant_matrix_8x8_get_raster_from_zigzag (params->WeightScale8x8[i],
pps->scaling_lists_8x8[i]);
}
}
static void
gst_nv_h264_dec_picture_params_from_sps (GstNvH264Dec * self,
const GstH264SPS * sps, gboolean field_pic, CUVIDH264PICPARAMS * params)
{
params->residual_colour_transform_flag = sps->separate_colour_plane_flag;
params->MbaffFrameFlag = sps->mb_adaptive_frame_field_flag && field_pic;
#define COPY_FIELD(f) \
(params)->f = (sps)->f
COPY_FIELD (log2_max_frame_num_minus4);
COPY_FIELD (pic_order_cnt_type);
COPY_FIELD (log2_max_pic_order_cnt_lsb_minus4);
COPY_FIELD (delta_pic_order_always_zero_flag);
COPY_FIELD (frame_mbs_only_flag);
COPY_FIELD (direct_8x8_inference_flag);
COPY_FIELD (num_ref_frames);
COPY_FIELD (bit_depth_luma_minus8);
COPY_FIELD (bit_depth_chroma_minus8);
COPY_FIELD (qpprime_y_zero_transform_bypass_flag);
#undef COPY_FIELD
}
static void
gst_nv_h264_dec_picture_params_from_pps (GstNvH264Dec * self,
const GstH264PPS * pps, CUVIDH264PICPARAMS * params)
{
params->second_chroma_qp_index_offset =
(gint8) pps->second_chroma_qp_index_offset;
#define COPY_FIELD(f) \
(params)->f = (pps)->f
COPY_FIELD (entropy_coding_mode_flag);
COPY_FIELD (pic_order_present_flag);
COPY_FIELD (num_ref_idx_l0_active_minus1);
COPY_FIELD (num_ref_idx_l1_active_minus1);
COPY_FIELD (pic_init_qp_minus26);
COPY_FIELD (weighted_pred_flag);
COPY_FIELD (weighted_bipred_idc);
COPY_FIELD (pic_init_qp_minus26);
COPY_FIELD (deblocking_filter_control_present_flag);
COPY_FIELD (redundant_pic_cnt_present_flag);
COPY_FIELD (transform_8x8_mode_flag);
COPY_FIELD (constrained_intra_pred_flag);
COPY_FIELD (chroma_qp_index_offset);
#undef COPY_FIELD
gst_nv_h264_dec_fill_scaling_list_4x4 (pps, params);
gst_nv_h264_dec_fill_scaling_list_8x8 (pps, params);
}
static void
gst_nv_h264_dec_reset_bitstream_params (GstNvH264Dec * self)
{
self->bitstream_buffer_offset = 0;
self->num_slices = 0;
self->params.nBitstreamDataLen = 0;
self->params.pBitstreamData = NULL;
self->params.nNumSlices = 0;
self->params.pSliceDataOffsets = NULL;
}
static gboolean
gst_nv_h264_dec_start_picture (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GstH264Dpb * dpb)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
CUVIDPICPARAMS *params = &self->params;
CUVIDH264PICPARAMS *h264_params = &params->CodecSpecific.h264;
const GstH264SliceHdr *slice_header = &slice->header;
const GstH264SPS *sps;
const GstH264PPS *pps;
GstNvDecoderFrame *frame;
GArray *dpb_array;
gint i;
g_return_val_if_fail (slice_header->pps != NULL, FALSE);
g_return_val_if_fail (slice_header->pps->sequence != NULL, FALSE);
frame = gst_nv_h264_dec_get_decoder_frame_from_picture (self, picture);
if (!frame) {
GST_ERROR_OBJECT (self,
"Couldn't get decoder frame frame picture %p", picture);
return FALSE;
}
gst_nv_h264_dec_reset_bitstream_params (self);
sps = slice_header->pps->sequence;
pps = slice_header->pps;
/* FIXME: update sps/pps related params only when it's required */
params->PicWidthInMbs = sps->pic_width_in_mbs_minus1 + 1;
params->FrameHeightInMbs = sps->pic_height_in_map_units_minus1 + 1;
params->CurrPicIdx = frame->index;
/* TODO: verifiy interlaced */
params->field_pic_flag = picture->field != GST_H264_PICTURE_FIELD_FRAME;
params->bottom_field_flag =
picture->field == GST_H264_PICTURE_FIELD_BOTTOM_FIELD;
/* TODO: set second_field here */
params->second_field = 0;
/* nBitstreamDataLen, pBitstreamData, nNumSlices and pSliceDataOffsets
* will be set later */
params->ref_pic_flag = GST_H264_PICTURE_IS_REF (picture);
/* will be updated later, if any slices belong to this frame is not
* intra slice */
params->intra_pic_flag = 1;
h264_params->frame_num = picture->frame_num;
h264_params->ref_pic_flag = GST_H264_PICTURE_IS_REF (picture);
/* FIXME: should be updated depending on field type? */
h264_params->CurrFieldOrderCnt[0] = picture->top_field_order_cnt;
h264_params->CurrFieldOrderCnt[1] = picture->bottom_field_order_cnt;
if (!self->last_sps || self->last_sps != sps) {
GST_DEBUG_OBJECT (self, "Update params from SPS and PPS");
gst_nv_h264_dec_picture_params_from_sps (self,
sps, slice_header->field_pic_flag, h264_params);
gst_nv_h264_dec_picture_params_from_pps (self, pps, h264_params);
self->last_sps = sps;
self->last_pps = pps;
} else if (!self->last_pps || self->last_pps != pps) {
GST_DEBUG_OBJECT (self, "Update params from PPS");
gst_nv_h264_dec_picture_params_from_pps (self, pps, h264_params);
self->last_pps = pps;
} else {
GST_TRACE_OBJECT (self, "SPS and PPS were not updated");
}
memset (&h264_params->dpb, 0, sizeof (h264_params->dpb));
for (i = 0; i < G_N_ELEMENTS (h264_params->dpb); i++)
h264_params->dpb[i].PicIdx = -1;
dpb_array = gst_h264_dpb_get_pictures_all (dpb);
for (i = 0; i < dpb_array->len && i < G_N_ELEMENTS (h264_params->dpb); i++) {
GstH264Picture *other = g_array_index (dpb_array, GstH264Picture *, i);
GstNvDecoderFrame *other_frame;
gint picture_index = -1;
CUVIDH264DPBENTRY *dpb = &h264_params->dpb[i];
if (!other->ref)
continue;
other_frame = gst_nv_h264_dec_get_decoder_frame_from_picture (self, other);
if (other_frame)
picture_index = other_frame->index;
dpb->PicIdx = picture_index;
if (GST_H264_PICTURE_IS_LONG_TERM_REF (other)) {
dpb->FrameIdx = other->long_term_frame_idx;
dpb->is_long_term = 1;
} else {
dpb->FrameIdx = other->frame_num;
dpb->is_long_term = 0;
}
dpb->not_existing = other->nonexisting;
if (dpb->not_existing && dpb->PicIdx != -1) {
GST_WARNING_OBJECT (self,
"Non-existing frame has valid picture index %d", dpb->PicIdx);
dpb->PicIdx = -1;
}
/* FIXME: 1=top_field, 2=bottom_field, 3=both_fields */
dpb->used_for_reference = 3;
dpb->FieldOrderCnt[0] = other->top_field_order_cnt;
dpb->FieldOrderCnt[1] = other->bottom_field_order_cnt;
}
g_array_unref (dpb_array);
return TRUE;
}
static gboolean
gst_nv_h264_dec_decode_slice (GstH264Decoder * decoder,
GstH264Picture * picture, GstH264Slice * slice, GArray * ref_pic_list0,
GArray * ref_pic_list1)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
gsize new_size;
GST_LOG_OBJECT (self, "Decode slice, nalu size %u", slice->nalu.size);
if (self->slice_offsets_alloc_len < self->num_slices + 1) {
self->slice_offsets = (guint *) g_realloc_n (self->slice_offsets,
self->num_slices + 1, sizeof (guint));
}
self->slice_offsets[self->num_slices] = self->bitstream_buffer_offset;
GST_LOG_OBJECT (self, "Slice offset %u for slice %d",
self->slice_offsets[self->num_slices], self->num_slices);
self->num_slices++;
new_size = self->bitstream_buffer_offset + slice->nalu.size + 3;
if (self->bitstream_buffer_alloc_size < new_size) {
self->bitstream_buffer =
(guint8 *) g_realloc (self->bitstream_buffer, new_size);
}
self->bitstream_buffer[self->bitstream_buffer_offset] = 0;
self->bitstream_buffer[self->bitstream_buffer_offset + 1] = 0;
self->bitstream_buffer[self->bitstream_buffer_offset + 2] = 1;
memcpy (self->bitstream_buffer + self->bitstream_buffer_offset + 3,
slice->nalu.data + slice->nalu.offset, slice->nalu.size);
self->bitstream_buffer_offset = new_size;
if (!GST_H264_IS_I_SLICE (&slice->header) &&
!GST_H264_IS_SI_SLICE (&slice->header))
self->params.intra_pic_flag = 0;
return TRUE;
}
static gboolean
gst_nv_h264_dec_end_picture (GstH264Decoder * decoder, GstH264Picture * picture)
{
GstNvH264Dec *self = GST_NV_H264_DEC (decoder);
gboolean ret;
CUVIDPICPARAMS *params = &self->params;
params->nBitstreamDataLen = self->bitstream_buffer_offset;
params->pBitstreamData = self->bitstream_buffer;
params->nNumSlices = self->num_slices;
params->pSliceDataOffsets = self->slice_offsets;
GST_LOG_OBJECT (self, "End picture, bitstream len: %" G_GSIZE_FORMAT
", num slices %d", self->bitstream_buffer_offset, self->num_slices);
ret = gst_nv_decoder_decode_picture (self->decoder, &self->params);
if (!ret)
GST_ERROR_OBJECT (self, "Failed to decode picture");
return ret;
}
static guint
gst_nv_h264_dec_get_preferred_output_delay (GstH264Decoder * decoder,
gboolean live)
{
/* Prefer to zero latency for live pipeline */
if (live)
return 0;
/* NVCODEC SDK uses 4 frame delay for better throughput performance */
return 4;
}
typedef struct
{
GstCaps *sink_caps;
GstCaps *src_caps;
guint cuda_device_id;
gboolean is_default;
} GstNvH264DecClassData;
static void
gst_nv_h264_dec_subclass_init (gpointer klass, GstNvH264DecClassData * cdata)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstNvH264DecClass *nvdec_class = (GstNvH264DecClass *) (klass);
gchar *long_name;
if (cdata->is_default) {
long_name = g_strdup_printf ("NVDEC H.264 Stateless Decoder");
} else {
long_name = g_strdup_printf ("NVDEC H.264 Stateless Decoder with device %d",
cdata->cuda_device_id);
}
gst_element_class_set_metadata (element_class, long_name,
"Codec/Decoder/Video/Hardware",
"Nvidia H.264 video decoder", "Seungha Yang <seungha@centricular.com>");
g_free (long_name);
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));
nvdec_class->cuda_device_id = cdata->cuda_device_id;
gst_caps_unref (cdata->sink_caps);
gst_caps_unref (cdata->src_caps);
g_free (cdata);
}
void
gst_nv_h264_dec_register (GstPlugin * plugin, guint device_id, guint rank,
GstCaps * sink_caps, GstCaps * src_caps, gboolean is_primary)
{
GTypeQuery type_query;
GTypeInfo type_info = { 0, };
GType subtype;
gchar *type_name;
gchar *feature_name;
GstNvH264DecClassData *cdata;
gboolean is_default = TRUE;
const GValue *value;
GstStructure *s;
/**
* element-nvh264sldec
*
* Since: 1.18
*/
cdata = g_new0 (GstNvH264DecClassData, 1);
cdata->sink_caps = gst_caps_from_string ("video/x-h264, "
"stream-format= (string) { avc, avc3, byte-stream }, "
"alignment= (string) au, "
"profile = (string) { high, main, constrained-high, constrained-baseline, baseline }, "
"framerate = " GST_VIDEO_FPS_RANGE);
s = gst_caps_get_structure (sink_caps, 0);
value = gst_structure_get_value (s, "width");
gst_caps_set_value (cdata->sink_caps, "width", value);
value = gst_structure_get_value (s, "height");
gst_caps_set_value (cdata->sink_caps, "height", value);
GST_MINI_OBJECT_FLAG_SET (cdata->sink_caps,
GST_MINI_OBJECT_FLAG_MAY_BE_LEAKED);
cdata->src_caps = gst_caps_ref (src_caps);
cdata->cuda_device_id = device_id;
g_type_query (GST_TYPE_NV_H264_DEC, &type_query);
memset (&type_info, 0, sizeof (type_info));
type_info.class_size = type_query.class_size;
type_info.instance_size = type_query.instance_size;
type_info.class_init = (GClassInitFunc) gst_nv_h264_dec_subclass_init;
type_info.class_data = cdata;
if (is_primary) {
type_name = g_strdup ("GstNvH264StatelessPrimaryDec");
feature_name = g_strdup ("nvh264dec");
} else {
type_name = g_strdup ("GstNvH264StatelessDec");
feature_name = g_strdup ("nvh264sldec");
}
if (g_type_from_name (type_name) != 0) {
g_free (type_name);
g_free (feature_name);
if (is_primary) {
type_name =
g_strdup_printf ("GstNvH264StatelessPrimaryDevice%dDec", device_id);
feature_name = g_strdup_printf ("nvh264device%ddec", device_id);
} else {
type_name = g_strdup_printf ("GstNvH264StatelessDevice%dDec", device_id);
feature_name = g_strdup_printf ("nvh264sldevice%ddec", device_id);
}
is_default = FALSE;
}
cdata->is_default = is_default;
subtype = g_type_register_static (GST_TYPE_NV_H264_DEC,
type_name, &type_info, 0);
/* make lower rank than default device */
if (rank > 0 && !is_default)
rank--;
if (!gst_element_register (plugin, feature_name, rank, subtype))
GST_WARNING ("Failed to register plugin '%s'", type_name);
g_free (type_name);
g_free (feature_name);
}