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71564f471d
This refcount based way would be helpful for sharing nvdec frame among multiple codec pictures and later zero-copy use case. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1738>
126 lines
5.1 KiB
C
126 lines
5.1 KiB
C
/* GStreamer
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* Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_NV_DECODER_H__
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#define __GST_NV_DECODER_H__
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include "gstcudautils.h"
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#include "gstcuvidloader.h"
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G_BEGIN_DECLS
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#define GST_TYPE_NV_DECODER (gst_nv_decoder_get_type())
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G_DECLARE_FINAL_TYPE (GstNvDecoder,
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gst_nv_decoder, GST, NV_DECODER, GstObject);
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typedef struct _GstNvDecoderFrame
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{
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/* CUVIDPICPARAMS::CurrPicIdx */
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gint index;
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guintptr devptr;
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guint pitch;
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gboolean mapped;
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/*< private >*/
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GstNvDecoder *decoder;
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gint ref_count;
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} GstNvDecoderFrame;
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typedef enum
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{
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GST_NV_DECOCER_OUTPUT_TYPE_SYSTEM = 0,
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GST_NV_DECOCER_OUTPUT_TYPE_GL,
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GST_NV_DECOCER_OUTPUT_TYPE_CUDA,
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/* FIXME: add support D3D11 memory */
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} GstNvDecoderOutputType;
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GstNvDecoder * gst_nv_decoder_new (GstCudaContext * context,
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cudaVideoCodec codec,
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GstVideoInfo * info,
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guint pool_size);
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GstNvDecoderFrame * gst_nv_decoder_new_frame (GstNvDecoder * decoder);
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GstNvDecoderFrame * gst_nv_decoder_frame_ref (GstNvDecoderFrame * frame);
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void gst_nv_decoder_frame_unref (GstNvDecoderFrame * frame);
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gboolean gst_nv_decoder_decode_picture (GstNvDecoder * decoder,
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CUVIDPICPARAMS * params);
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gboolean gst_nv_decoder_finish_frame (GstNvDecoder * decoder,
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GstNvDecoderOutputType output_type,
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GstObject * graphics_context,
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GstNvDecoderFrame *frame,
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GstBuffer *buffer);
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/* utils for class registration */
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gboolean gst_nv_decoder_check_device_caps (CUcontext cuda_ctx,
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cudaVideoCodec codec,
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GstCaps **sink_template,
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GstCaps **src_template);
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const gchar * gst_cuda_video_codec_to_string (cudaVideoCodec codec);
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/* helper methods */
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gboolean gst_nv_decoder_ensure_element_data (GstElement * decoder,
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guint cuda_device_id,
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GstCudaContext ** cuda_context,
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CUstream * cuda_stream,
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GstObject ** gl_display,
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GstObject ** other_gl_context);
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void gst_nv_decoder_set_context (GstElement * decoder,
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GstContext * context,
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guint cuda_device_id,
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GstCudaContext ** cuda_context,
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GstObject ** gl_display,
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GstObject ** other_gl_context);
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gboolean gst_nv_decoder_handle_context_query (GstElement * decoder,
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GstQuery * query,
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GstCudaContext * cuda_context,
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GstObject * gl_display,
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GstObject * gl_context,
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GstObject * other_gl_context);
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gboolean gst_nv_decoder_negotiate (GstVideoDecoder * decoder,
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GstVideoCodecState * input_state,
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GstVideoFormat format,
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guint width,
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guint height,
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GstObject * gl_display,
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GstObject * other_gl_context,
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GstObject ** gl_context,
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GstVideoCodecState ** output_state,
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GstNvDecoderOutputType * output_type);
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gboolean gst_nv_decoder_decide_allocation (GstNvDecoder * nvdec,
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GstVideoDecoder * decocer,
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GstQuery * query,
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GstObject * gl_context,
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GstNvDecoderOutputType output_type);
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G_END_DECLS
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#endif /* __GST_NV_DECODER_H__ */
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