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Member "mesa-20.1.8/src/gallium/auxiliary/vl/vl_decoder.c" (16 Sep 2020, 3023 Bytes) of package /linux/misc/mesa-20.1.8.tar.xz:


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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 }