vl_decoder.c revision efc7fda4627919b5355952d955ee4a2c98505e56 
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
35bool
36vl_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
47struct pipe_video_decoder *
48vl_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)
53{
54   unsigned buffer_width, buffer_height;
55   bool pot_buffers;
56
57   assert(pipe);
58   assert(width > 0 && height > 0);
59
60   pot_buffers = !pipe->screen->get_video_param
61   (
62      pipe->screen,
63      profile,
64      PIPE_VIDEO_CAP_NPOT_TEXTURES
65   );
66
67   buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, MACROBLOCK_WIDTH);
68   buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, MACROBLOCK_HEIGHT);
69
70   switch (u_reduce_video_profile(profile)) {
71      case PIPE_VIDEO_CODEC_MPEG12:
72         return vl_create_mpeg12_decoder(pipe, profile, entrypoint, chroma_format, buffer_width, buffer_height);
73      default:
74         return NULL;
75   }
76   return NULL;
77}
78