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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