src/gallium/include/pipe/p_video_codec.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef PIPE_VIDEO_CONTEXT_H
  29 #define PIPE_VIDEO_CONTEXT_H
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #include "pipe/p_video_state.h"
  36
  37 struct pipe_screen;
  38 struct pipe_surface;
  39 struct pipe_macroblock;
  40 struct pipe_picture_desc;
  41 struct pipe_fence_handle;
  42
  43 /**
  44  * Gallium video codec for a specific format/profile
  45  */
  46 struct pipe_video_codec
  47 {
  48    struct pipe_context *context;
  49
  50    enum pipe_video_profile profile;
  51    enum pipe_video_entrypoint entrypoint;
  52    enum pipe_video_chroma_format chroma_format;
  53    unsigned width;
  54    unsigned height;
  55    unsigned max_references;
  56    bool expect_chunked_decode;
  57
  58    /**
  59     * destroy this video decoder
  60     */
  61    void (*destroy)(struct pipe_video_codec *codec);
  62
  63    /**
  64     * start decoding of a new frame
  65     */
  66    void (*begin_frame)(struct pipe_video_codec *codec,
  67                        struct pipe_video_buffer *target,
  68                        struct pipe_picture_desc *picture);
  69
  70    /**
  71     * decode a macroblock
  72     */
  73    void (*decode_macroblock)(struct pipe_video_codec *codec,
  74                              struct pipe_video_buffer *target,
  75                              struct pipe_picture_desc *picture,
  76                              const struct pipe_macroblock *macroblocks,
  77                              unsigned num_macroblocks);
  78
  79    /**
  80     * decode a bitstream
  81     */
  82    void (*decode_bitstream)(struct pipe_video_codec *codec,
  83                             struct pipe_video_buffer *target,
  84                             struct pipe_picture_desc *picture,
  85                             unsigned num_buffers,
  86                             const void * const *buffers,
  87                             const unsigned *sizes);
  88
  89    /**
  90     * end decoding of the current frame
  91     */
  92    void (*end_frame)(struct pipe_video_codec *codec,
  93                      struct pipe_video_buffer *target,
  94                      struct pipe_picture_desc *picture);
  95
  96    /**
  97     * flush any outstanding command buffers to the hardware
  98     * should be called before a video_buffer is acessed by the state tracker again
  99     */
 100    void (*flush)(struct pipe_video_codec *codec);
 101 };
 102
 103 /**
 104  * output for decoding / input for displaying
 105  */
 106 struct pipe_video_buffer
 107 {
 108    struct pipe_context *context;
 109
 110    enum pipe_format buffer_format;
 111    enum pipe_video_chroma_format chroma_format;
 112    unsigned width;
 113    unsigned height;
 114    bool interlaced;
 115
 116    /**
 117     * destroy this video buffer
 118     */
 119    void (*destroy)(struct pipe_video_buffer *buffer);
 120
 121    /**
 122     * get a individual sampler view for each plane
 123     */
 124    struct pipe_sampler_view **(*get_sampler_view_planes)(struct pipe_video_buffer *buffer);
 125
 126    /**
 127     * get a individual sampler view for each component
 128     */
 129    struct pipe_sampler_view **(*get_sampler_view_components)(struct pipe_video_buffer *buffer);
 130
 131    /**
 132     * get a individual surfaces for each plane
 133     */
 134    struct pipe_surface **(*get_surfaces)(struct pipe_video_buffer *buffer);
 135
 136    /*
 137     * auxiliary associated data
 138     */
 139    void *associated_data;
 140
 141    /*
 142     * codec where the associated data came from
 143     */
 144    struct pipe_video_codec *codec;
 145
 146    /*
 147     * destroy the associated data
 148     */
 149    void (*destroy_associated_data)(void *associated_data);
 150 };
 151
 152 #ifdef __cplusplus
 153 }
 154 #endif
 155
 156 #endif /* PIPE_VIDEO_CONTEXT_H */