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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 VMWARE 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_codec.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.                      enum pipe_video_entrypoint entrypoint)
  38. {
  39.    assert(screen);
  40.    switch (u_reduce_video_profile(profile)) {
  41.       case PIPE_VIDEO_FORMAT_MPEG12:
  42.          return entrypoint != PIPE_VIDEO_ENTRYPOINT_ENCODE;
  43.       default:
  44.          return false;
  45.    }
  46. }
  47.  
  48. int
  49. vl_level_supported(struct pipe_screen *screen, enum pipe_video_profile profile)
  50. {
  51.    assert(screen);
  52.    switch (profile) {
  53.       case PIPE_VIDEO_PROFILE_MPEG1:
  54.          return 0;
  55.       case PIPE_VIDEO_PROFILE_MPEG2_SIMPLE:
  56.       case PIPE_VIDEO_PROFILE_MPEG2_MAIN:
  57.          return 3;
  58.       default:
  59.          return 0;
  60.    }
  61. }
  62.  
  63. struct pipe_video_codec *
  64. vl_create_decoder(struct pipe_context *pipe,
  65.                   const struct pipe_video_codec *templat)
  66. {
  67.    unsigned width = templat->width, height = templat->height;
  68.    struct pipe_video_codec temp;
  69.    bool pot_buffers;
  70.  
  71.    assert(pipe);
  72.    assert(width > 0 && height > 0);
  73.    
  74.    pot_buffers = !pipe->screen->get_video_param
  75.    (
  76.       pipe->screen,
  77.       templat->profile,
  78.       templat->entrypoint,
  79.       PIPE_VIDEO_CAP_NPOT_TEXTURES
  80.    );
  81.  
  82.    temp = *templat;
  83.    temp.width = pot_buffers ? util_next_power_of_two(width) : align(width, VL_MACROBLOCK_WIDTH);
  84.    temp.height = pot_buffers ? util_next_power_of_two(height) : align(height, VL_MACROBLOCK_HEIGHT);
  85.  
  86.    switch (u_reduce_video_profile(temp.profile)) {
  87.       case PIPE_VIDEO_FORMAT_MPEG12:
  88.          return vl_create_mpeg12_decoder(pipe, &temp);
  89.  
  90.       default:
  91.          return NULL;
  92.    }
  93.    return NULL;
  94. }
  95.