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94 lines
2.3 KiB
94 lines
2.3 KiB
/* |
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* Common Ut Video header |
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* Copyright (c) 2011 Konstantin Shishkov |
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* |
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* This file is part of Libav. |
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* |
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* Libav is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* Libav is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with Libav; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_UTVIDEO_H |
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#define AVCODEC_UTVIDEO_H |
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/** |
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* @file |
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* Common Ut Video header |
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*/ |
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#include "libavutil/common.h" |
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#include "avcodec.h" |
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#include "bswapdsp.h" |
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#include "huffyuvencdsp.h" |
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enum { |
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PRED_NONE = 0, |
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PRED_LEFT, |
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PRED_GRADIENT, |
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PRED_MEDIAN, |
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}; |
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enum { |
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COMP_NONE = 0, |
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COMP_HUFF, |
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}; |
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/* |
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* "Original format" markers. |
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* Based on values gotten from the official VFW encoder. |
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* They are not used during decoding, but they do have |
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* an informative role on seeing what was input |
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* to the encoder. |
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*/ |
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enum { |
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UTVIDEO_RGB = MKTAG(0x00, 0x00, 0x01, 0x18), |
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UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18), |
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UTVIDEO_420 = MKTAG('Y', 'V', '1', '2'), |
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UTVIDEO_422 = MKTAG('Y', 'U', 'Y', '2'), |
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}; |
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/* Mapping of libavcodec prediction modes to Ut Video's */ |
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extern const int ff_ut_pred_order[5]; |
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/* Order of RGB(A) planes in Ut Video */ |
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extern const int ff_ut_rgb_order[4]; |
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typedef struct UtvideoContext { |
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const AVClass *class; |
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AVCodecContext *avctx; |
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BswapDSPContext bdsp; |
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HuffYUVEncDSPContext hdsp; |
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uint32_t frame_info_size, flags, frame_info; |
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int planes; |
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int slices; |
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int compression; |
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int interlaced; |
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int frame_pred; |
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ptrdiff_t slice_stride; |
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uint8_t *slice_bits, *slice_buffer[4]; |
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int slice_bits_size; |
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} UtvideoContext; |
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typedef struct HuffEntry { |
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uint8_t sym; |
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uint8_t len; |
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uint32_t code; |
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} HuffEntry; |
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/* Compare huffman tree nodes */ |
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int ff_ut_huff_cmp_len(const void *a, const void *b); |
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#endif /* AVCODEC_UTVIDEO_H */
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