modules/codec/gstreamer/gstvlcpictureplaneallocator.h

   1 /*****************************************************************************
   2  * gstvlcpictureplaneallocator.h: VLC pictures wrapped by GstAllocator
   3  *****************************************************************************
   4  * Copyright (C) 2016 VLC authors and VideoLAN
   5  * $Id:
   6  *
   7  * Author: Vikram Fugro <vikram.fugro@gmail.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Library General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Library General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * Preamble
  26  *****************************************************************************/
  27 #ifndef VLC_GST_PICTURE_PLANE_ALLOCATOR_H_
  28 #define VLC_GST_PICTURE_PLANE_ALLOCATOR_H_
  29
  30 #include <gst/gst.h>
  31 #include <gst/video/video.h>
  32 #include <gst/video/gstvideometa.h>
  33
  34 #include <vlc_common.h>
  35 #include <vlc_codec.h>
  36
  37 typedef struct _GstVlcPicturePlane GstVlcPicturePlane;
  38 typedef struct _GstVlcPicturePlaneAllocator GstVlcPicturePlaneAllocator;
  39 typedef struct _GstVlcPicturePlaneAllocatorClass \
  40                                     GstVlcPicturePlaneAllocatorClass;
  41
  42 /* allocator functions */
  43 #define GST_TYPE_VLC_PICTURE_PLANE_ALLOCATOR      \
  44     (gst_vlc_picture_plane_allocator_get_type())
  45 #define GST_IS_VLC_PICTURE_PLANE_ALLOCATOR(obj)   \
  46     (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_VLC_PICTURE_PLANE_ALLOCATOR))
  47 #define GST_VLC_PICTURE_PLANE_ALLOCATOR(obj)      \
  48     (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_VLC_PICTURE_PLANE_ALLOCATOR, \
  49     GstVlcPicturePlaneAllocator))
  50 #define GST_VLC_PICTURE_PLANE_ALLOCATOR_CAST(obj) \
  51     ((GstVlcPicturePlaneAllocator*)(obj))
  52
  53 struct _GstVlcPicturePlane
  54 {
  55     GstMemory parent;
  56
  57     decoder_t *p_dec;
  58     picture_t *p_pic;
  59     plane_t *p_plane;
  60 };
  61
  62 struct _GstVlcPicturePlaneAllocator
  63 {
  64     GstAllocator parent;
  65     picture_t pic_info;;
  66
  67     decoder_t *p_dec;
  68 };
  69
  70 struct _GstVlcPicturePlaneAllocatorClass
  71 {
  72     GstAllocatorClass parent_class;
  73 };
  74
  75 GType gst_vlc_picture_plane_allocator_get_type( void );
  76 GstVlcPicturePlaneAllocator* gst_vlc_picture_plane_allocator_new(
  77         decoder_t *p_dec );
  78 bool gst_vlc_picture_plane_allocator_query_format(
  79         GstVlcPicturePlaneAllocator *p_gallocator, GstVideoInfo *p_info,
  80         GstVideoAlignment *p_align, GstCaps *p_caps );
  81 bool gst_vlc_set_vout_fmt( GstVideoInfo *p_info, GstVideoAlignment *p_align,
  82         GstCaps *p_caps, decoder_t *p_dec );
  83 void gst_vlc_dec_ensure_empty_queue( decoder_t* p_dec );
  84 bool gst_vlc_picture_plane_allocator_hold( GstVlcPicturePlaneAllocator
  85         *p_allocator, GstBuffer *p_buffer );
  86 void gst_vlc_picture_plane_allocator_release(
  87         GstVlcPicturePlaneAllocator *p_allocator, GstBuffer *p_buffer );
  88 bool gst_vlc_picture_plane_allocator_alloc(
  89         GstVlcPicturePlaneAllocator *p_allocator,
  90         GstBuffer *p_buffer );
  91 #endif