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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 vl_mpeg12_decoder_h
     29 #define vl_mpeg12_decoder_h
     30 
     31 #include "pipe/p_video_decoder.h"
     32 
     33 #include "vl_mpeg12_bitstream.h"
     34 #include "vl_zscan.h"
     35 #include "vl_idct.h"
     36 #include "vl_mc.h"
     37 
     38 #include "vl_vertex_buffers.h"
     39 #include "vl_video_buffer.h"
     40 
     41 struct pipe_screen;
     42 struct pipe_context;
     43 
     44 struct vl_mpeg12_decoder
     45 {
     46    struct pipe_video_decoder base;
     47 
     48    unsigned chroma_width, chroma_height;
     49 
     50    unsigned blocks_per_line;
     51    unsigned num_blocks;
     52    unsigned width_in_macroblocks;
     53    bool expect_chunked_decode;
     54 
     55    enum pipe_format zscan_source_format;
     56 
     57    struct pipe_vertex_buffer quads;
     58    struct pipe_vertex_buffer pos;
     59 
     60    void *ves_ycbcr;
     61    void *ves_mv;
     62 
     63    void *sampler_ycbcr;
     64 
     65    struct pipe_sampler_view *zscan_linear;
     66    struct pipe_sampler_view *zscan_normal;
     67    struct pipe_sampler_view *zscan_alternate;
     68 
     69    struct pipe_video_buffer *idct_source;
     70    struct pipe_video_buffer *mc_source;
     71 
     72    struct vl_zscan zscan_y, zscan_c;
     73    struct vl_idct idct_y, idct_c;
     74    struct vl_mc mc_y, mc_c;
     75 
     76    void *dsa;
     77 
     78    unsigned current_buffer;
     79    struct vl_mpeg12_buffer *dec_buffers[4];
     80 };
     81 
     82 struct vl_mpeg12_buffer
     83 {
     84    struct vl_vertex_buffer vertex_stream;
     85 
     86    unsigned block_num;
     87    unsigned num_ycbcr_blocks[3];
     88 
     89    struct pipe_sampler_view *zscan_source;
     90 
     91    struct vl_mpg12_bs bs;
     92    struct vl_zscan_buffer zscan[VL_NUM_COMPONENTS];
     93    struct vl_idct_buffer idct[VL_NUM_COMPONENTS];
     94    struct vl_mc_buffer mc[VL_NUM_COMPONENTS];
     95 
     96    struct pipe_transfer *tex_transfer;
     97    short *texels;
     98 
     99    struct vl_ycbcr_block *ycbcr_stream[VL_NUM_COMPONENTS];
    100    struct vl_motionvector *mv_stream[VL_MAX_REF_FRAMES];
    101 };
    102 
    103 /**
    104  * creates a shader based mpeg12 decoder
    105  */
    106 struct pipe_video_decoder *
    107 vl_create_mpeg12_decoder(struct pipe_context *pipe,
    108                          enum pipe_video_profile profile,
    109                          enum pipe_video_entrypoint entrypoint,
    110                          enum pipe_video_chroma_format chroma_format,
    111                          unsigned width, unsigned height, unsigned max_references,
    112                          bool expect_chunked_decode);
    113 
    114 #endif /* vl_mpeg12_decoder_h */
    115