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  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 TUNGSTEN GRAPHICS 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 decoder for a specific codec/profile
  45.  */
  46. struct pipe_video_decoder
  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.  
  57.    /**
  58.     * destroy this video decoder
  59.     */
  60.    void (*destroy)(struct pipe_video_decoder *decoder);
  61.  
  62.    /**
  63.     * start decoding of a new frame
  64.     */
  65.    void (*begin_frame)(struct pipe_video_decoder *decoder,
  66.                        struct pipe_video_buffer *target,
  67.                        struct pipe_picture_desc *picture);
  68.  
  69.    /**
  70.     * decode a macroblock
  71.     */
  72.    void (*decode_macroblock)(struct pipe_video_decoder *decoder,
  73.                              struct pipe_video_buffer *target,
  74.                              struct pipe_picture_desc *picture,
  75.                              const struct pipe_macroblock *macroblocks,
  76.                              unsigned num_macroblocks);
  77.  
  78.    /**
  79.     * decode a bitstream
  80.     */
  81.    void (*decode_bitstream)(struct pipe_video_decoder *decoder,
  82.                             struct pipe_video_buffer *target,
  83.                             struct pipe_picture_desc *picture,
  84.                             unsigned num_buffers,
  85.                             const void * const *buffers,
  86.                             const unsigned *sizes);
  87.  
  88.    /**
  89.     * end decoding of the current frame
  90.     */
  91.    void (*end_frame)(struct pipe_video_decoder *decoder,
  92.                      struct pipe_video_buffer *target,
  93.                      struct pipe_picture_desc *picture);
  94.  
  95.    /**
  96.     * flush any outstanding command buffers to the hardware
  97.     * should be called before a video_buffer is acessed by the state tracker again
  98.     */
  99.    void (*flush)(struct pipe_video_decoder *decoder);
  100. };
  101.  
  102. /**
  103.  * output for decoding / input for displaying
  104.  */
  105. struct pipe_video_buffer
  106. {
  107.    struct pipe_context *context;
  108.  
  109.    enum pipe_format buffer_format;
  110.    enum pipe_video_chroma_format chroma_format;
  111.    unsigned width;
  112.    unsigned height;
  113.    bool interlaced;
  114.  
  115.    /**
  116.     * destroy this video buffer
  117.     */
  118.    void (*destroy)(struct pipe_video_buffer *buffer);
  119.  
  120.    /**
  121.     * get a individual sampler view for each plane
  122.     */
  123.    struct pipe_sampler_view **(*get_sampler_view_planes)(struct pipe_video_buffer *buffer);
  124.  
  125.    /**
  126.     * get a individual sampler view for each component
  127.     */
  128.    struct pipe_sampler_view **(*get_sampler_view_components)(struct pipe_video_buffer *buffer);
  129.  
  130.    /**
  131.     * get a individual surfaces for each plane
  132.     */
  133.    struct pipe_surface **(*get_surfaces)(struct pipe_video_buffer *buffer);
  134.  
  135.    /*
  136.     * auxiliary associated data
  137.     */
  138.    void *associated_data;
  139.  
  140.    /*
  141.     * decoder where the associated data came from
  142.     */
  143.    struct pipe_video_decoder *decoder;
  144.  
  145.    /*
  146.     * destroy the associated data
  147.     */
  148.    void (*destroy_associated_data)(void *associated_data);
  149. };
  150.  
  151. #ifdef __cplusplus
  152. }
  153. #endif
  154.  
  155. #endif /* PIPE_VIDEO_CONTEXT_H */
  156.