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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. #include "pipe/p_video_decoder.h"
  29.  
  30. #include "util/u_video.h"
  31.  
  32. #include "vl_decoder.h"
  33. #include "vl_mpeg12_decoder.h"
  34.  
  35. bool
  36. vl_profile_supported(struct pipe_screen *screen, enum pipe_video_profile profile)
  37. {
  38.    assert(screen);
  39.    switch (u_reduce_video_profile(profile)) {
  40.       case PIPE_VIDEO_CODEC_MPEG12:
  41.          return true;
  42.       default:
  43.          return false;
  44.    }
  45. }
  46.  
  47. struct pipe_video_decoder *
  48. vl_create_decoder(struct pipe_context *pipe,
  49.                   enum pipe_video_profile profile,
  50.                   enum pipe_video_entrypoint entrypoint,
  51.                   enum pipe_video_chroma_format chroma_format,
  52.                   unsigned width, unsigned height, unsigned max_references,
  53.                   bool expect_chunked_decode)
  54. {
  55.    unsigned buffer_width, buffer_height;
  56.    bool pot_buffers;
  57.  
  58.    assert(pipe);
  59.    assert(width > 0 && height > 0);
  60.    
  61.    pot_buffers = !pipe->screen->get_video_param
  62.    (
  63.       pipe->screen,
  64.       profile,
  65.       PIPE_VIDEO_CAP_NPOT_TEXTURES
  66.    );
  67.  
  68.    buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, VL_MACROBLOCK_WIDTH);
  69.    buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, VL_MACROBLOCK_HEIGHT);
  70.  
  71.    switch (u_reduce_video_profile(profile)) {
  72.       case PIPE_VIDEO_CODEC_MPEG12:
  73.          return vl_create_mpeg12_decoder(pipe, profile, entrypoint, chroma_format,
  74.                                          buffer_width, buffer_height, max_references,
  75.                                          expect_chunked_decode);
  76.       default:
  77.          return NULL;
  78.    }
  79.    return NULL;
  80. }
  81.