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 #ifndef vl_mpeg12_decoder_h
29 #define vl_mpeg12_decoder_h
30 
31 #include "pipe/p_video_decoder.h"
32 
33 #include "vl_mpeg12_bitstream.h"
34 #include "vl_zscan.h"
35 #include "vl_idct.h"
36 #include "vl_mc.h"
37 
38 #include "vl_vertex_buffers.h"
39 #include "vl_video_buffer.h"
40 
41 struct pipe_screen;
42 struct pipe_context;
43 
44 struct vl_mpeg12_decoder
45 {
46    struct pipe_video_decoder base;
47 
48    unsigned chroma_width, chroma_height;
49 
50    unsigned blocks_per_line;
51    unsigned num_blocks;
52    unsigned width_in_macroblocks;
53    bool expect_chunked_decode;
54 
55    enum pipe_format zscan_source_format;
56 
57    struct pipe_vertex_buffer quads;
58    struct pipe_vertex_buffer pos;
59 
60    void *ves_ycbcr;
61    void *ves_mv;
62 
63    void *sampler_ycbcr;
64 
65    struct pipe_sampler_view *zscan_linear;
66    struct pipe_sampler_view *zscan_normal;
67    struct pipe_sampler_view *zscan_alternate;
68 
69    struct pipe_video_buffer *idct_source;
70    struct pipe_video_buffer *mc_source;
71 
72    struct vl_zscan zscan_y, zscan_c;
73    struct vl_idct idct_y, idct_c;
74    struct vl_mc mc_y, mc_c;
75 
76    void *dsa;
77 
78    unsigned current_buffer;
79    struct vl_mpeg12_buffer *dec_buffers[4];
80 };
81 
82 struct vl_mpeg12_buffer
83 {
84    struct vl_vertex_buffer vertex_stream;
85 
86    unsigned block_num;
87    unsigned num_ycbcr_blocks[3];
88 
89    struct pipe_sampler_view *zscan_source;
90 
91    struct vl_mpg12_bs bs;
92    struct vl_zscan_buffer zscan[VL_NUM_COMPONENTS];
93    struct vl_idct_buffer idct[VL_NUM_COMPONENTS];
94    struct vl_mc_buffer mc[VL_NUM_COMPONENTS];
95 
96    struct pipe_transfer *tex_transfer;
97    short *texels;
98 
99    struct vl_ycbcr_block *ycbcr_stream[VL_NUM_COMPONENTS];
100    struct vl_motionvector *mv_stream[VL_MAX_REF_FRAMES];
101 };
102 
103 /**
104  * creates a shader based mpeg12 decoder
105  */
106 struct pipe_video_decoder *
107 vl_create_mpeg12_decoder(struct pipe_context *pipe,
108                          enum pipe_video_profile profile,
109                          enum pipe_video_entrypoint entrypoint,
110                          enum pipe_video_chroma_format chroma_format,
111                          unsigned width, unsigned height, unsigned max_references,
112                          bool expect_chunked_decode);
113 
114 #endif /* vl_mpeg12_decoder_h */
115