blob: 1d708658f54700fba2d20763b4e60a7982615d5e
| 1 | /* |
| 2 | * Common Ut Video header |
| 3 | * Copyright (c) 2011 Konstantin Shishkov |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | #ifndef AVCODEC_UTVIDEO_H |
| 23 | #define AVCODEC_UTVIDEO_H |
| 24 | |
| 25 | /** |
| 26 | * @file |
| 27 | * Common Ut Video header |
| 28 | */ |
| 29 | |
| 30 | #include "libavutil/common.h" |
| 31 | #include "avcodec.h" |
| 32 | #include "bswapdsp.h" |
| 33 | #include "lossless_videodsp.h" |
| 34 | #include "lossless_videoencdsp.h" |
| 35 | |
| 36 | enum { |
| 37 | PRED_NONE = 0, |
| 38 | PRED_LEFT, |
| 39 | PRED_GRADIENT, |
| 40 | PRED_MEDIAN, |
| 41 | }; |
| 42 | |
| 43 | enum { |
| 44 | COMP_NONE = 0, |
| 45 | COMP_HUFF, |
| 46 | }; |
| 47 | |
| 48 | /* |
| 49 | * "Original format" markers. |
| 50 | * Based on values gotten from the official VFW encoder. |
| 51 | * They are not used during decoding, but they do have |
| 52 | * an informative role on seeing what was input |
| 53 | * to the encoder. |
| 54 | */ |
| 55 | enum { |
| 56 | UTVIDEO_RGB = MKTAG(0x00, 0x00, 0x01, 0x18), |
| 57 | UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18), |
| 58 | UTVIDEO_420 = MKTAG('Y', 'V', '1', '2'), |
| 59 | UTVIDEO_422 = MKTAG('Y', 'U', 'Y', '2'), |
| 60 | UTVIDEO_444 = MKTAG('Y', 'V', '2', '4'), |
| 61 | }; |
| 62 | |
| 63 | /* Mapping of libavcodec prediction modes to Ut Video's */ |
| 64 | extern const int ff_ut_pred_order[5]; |
| 65 | |
| 66 | /* Order of RGB(A) planes in Ut Video */ |
| 67 | extern const int ff_ut_rgb_order[4]; |
| 68 | |
| 69 | typedef struct UtvideoContext { |
| 70 | const AVClass *class; |
| 71 | AVCodecContext *avctx; |
| 72 | BswapDSPContext bdsp; |
| 73 | LLVidDSPContext llviddsp; |
| 74 | LLVidEncDSPContext llvidencdsp; |
| 75 | |
| 76 | uint32_t frame_info_size, flags, frame_info; |
| 77 | int planes; |
| 78 | int slices; |
| 79 | int compression; |
| 80 | int interlaced; |
| 81 | int frame_pred; |
| 82 | int pro; |
| 83 | |
| 84 | ptrdiff_t slice_stride; |
| 85 | uint8_t *slice_bits, *slice_buffer[4]; |
| 86 | int slice_bits_size; |
| 87 | } UtvideoContext; |
| 88 | |
| 89 | typedef struct HuffEntry { |
| 90 | uint16_t sym; |
| 91 | uint8_t len; |
| 92 | uint32_t code; |
| 93 | } HuffEntry; |
| 94 | |
| 95 | /* Compare huffman tree nodes */ |
| 96 | int ff_ut_huff_cmp_len(const void *a, const void *b); |
| 97 | int ff_ut10_huff_cmp_len(const void *a, const void *b); |
| 98 | |
| 99 | #endif /* AVCODEC_UTVIDEO_H */ |
| 100 |