subprojects/gst-plugins-bad/sys/nvcodec/gstnvdecoder.h

   1 /* GStreamer
   2  * Copyright (C) 2020 Seungha Yang <seungha@centricular.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifndef __GST_NV_DECODER_H__
  21 #define __GST_NV_DECODER_H__
  22
  23 #include <gst/gst.h>
  24 #include <gst/video/video.h>
  25 #include "gstcudautils.h"
  26 #include "gstcuvidloader.h"
  27
  28 G_BEGIN_DECLS
  29
  30 #define GST_TYPE_NV_DECODER (gst_nv_decoder_get_type())
  31 G_DECLARE_FINAL_TYPE (GstNvDecoder,
  32     gst_nv_decoder, GST, NV_DECODER, GstObject);
  33
  34 typedef struct _GstNvDecoderFrame
  35 {
  36   /* CUVIDPICPARAMS::CurrPicIdx */
  37   gint index;
  38   guintptr devptr;
  39   guint pitch;
  40
  41   gboolean mapped;
  42
  43   /*< private >*/
  44   GstNvDecoder *decoder;
  45
  46   gint ref_count;
  47 } GstNvDecoderFrame;
  48
  49 GstNvDecoder * gst_nv_decoder_new (GstCudaContext * context);
  50
  51 gboolean       gst_nv_decoder_is_configured (GstNvDecoder * decoder);
  52
  53 gboolean       gst_nv_decoder_configure (GstNvDecoder * decoder,
  54                                          cudaVideoCodec codec,
  55                                          GstVideoInfo * info,
  56                                          gint coded_width,
  57                                          gint coded_height,
  58                                          guint pool_size);
  59
  60 GstNvDecoderFrame * gst_nv_decoder_new_frame (GstNvDecoder * decoder);
  61
  62 GstNvDecoderFrame * gst_nv_decoder_frame_ref (GstNvDecoderFrame * frame);
  63
  64 void gst_nv_decoder_frame_unref (GstNvDecoderFrame * frame);
  65
  66 gboolean gst_nv_decoder_decode_picture (GstNvDecoder * decoder,
  67                                         CUVIDPICPARAMS * params);
  68
  69 gboolean gst_nv_decoder_finish_frame   (GstNvDecoder * decoder,
  70                                         GstVideoDecoder * videodec,
  71                                         GstNvDecoderFrame *frame,
  72                                         GstBuffer ** buffer);
  73
  74 /* utils for class registration */
  75 gboolean gst_nv_decoder_check_device_caps (CUcontext cuda_ctx,
  76                                            cudaVideoCodec codec,
  77                                            GstCaps **sink_template,
  78                                            GstCaps **src_template);
  79
  80 const gchar * gst_cuda_video_codec_to_string (cudaVideoCodec codec);
  81
  82 /* helper methods */
  83 gboolean gst_nv_decoder_handle_set_context   (GstNvDecoder * decoder,
  84                                               GstElement * videodec,
  85                                               GstContext * context);
  86
  87 gboolean gst_nv_decoder_handle_context_query (GstNvDecoder * decoder,
  88                                               GstVideoDecoder * videodec,
  89                                               GstQuery * query);
  90
  91 gboolean gst_nv_decoder_negotiate            (GstNvDecoder * decoder,
  92                                               GstVideoDecoder * videodec,
  93                                               GstVideoCodecState * input_state,
  94                                               GstVideoCodecState ** output_state);
  95
  96 gboolean gst_nv_decoder_decide_allocation    (GstNvDecoder * decoder,
  97                                               GstVideoDecoder * videodec,
  98                                               GstQuery * query);
  99
 100 G_END_DECLS
 101
 102 #endif /* __GST_NV_DECODER_H__ */