gstreamer/sys/nvcodec/gstnvdecoder.h
2020-11-12 13:10:13 +00:00

126 lines
5.1 KiB
C

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