src/gallium/auxiliary/vl/vl_decoder.c

   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 }