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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.