2be5c17ed3e7a7d76a5a46e54a2085ee2a7eb7da
[mesa.git] / 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 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 struct pipe_video_decoder *
36 vl_create_decoder(struct pipe_context *pipe,
37 enum pipe_video_profile profile,
38 enum pipe_video_entrypoint entrypoint,
39 enum pipe_video_chroma_format chroma_format,
40 unsigned width, unsigned height)
41 {
42 unsigned buffer_width, buffer_height;
43 bool pot_buffers;
44
45 assert(pipe);
46 assert(width > 0 && height > 0);
47
48 pot_buffers = !pipe->screen->get_video_param
49 (
50 pipe->screen,
51 profile,
52 PIPE_VIDEO_CAP_NPOT_TEXTURES
53 );
54
55 buffer_width = pot_buffers ? util_next_power_of_two(width) : align(width, MACROBLOCK_WIDTH);
56 buffer_height = pot_buffers ? util_next_power_of_two(height) : align(height, MACROBLOCK_HEIGHT);
57
58 switch (u_reduce_video_profile(profile)) {
59 case PIPE_VIDEO_CODEC_MPEG12:
60 return vl_create_mpeg12_decoder(pipe, profile, entrypoint, chroma_format, buffer_width, buffer_height);
61 default:
62 return NULL;
63 }
64 return NULL;
65 }