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/* | ||
* Common Ut Video code | ||
* Copyright (c) 2011 Konstantin Shishkov | ||
* | ||
* This file is part of Libav. | ||
* | ||
* Libav is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* Libav is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with Libav; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
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/** | ||
* @file | ||
* Common Ut Video code | ||
*/ | ||
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#include "utvideo.h" | ||
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const int ff_ut_pred_order[5] = { | ||
PRED_LEFT, PRED_MEDIAN, PRED_MEDIAN, PRED_NONE, PRED_GRADIENT | ||
}; | ||
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const int ff_ut_rgb_order[4] = { 1, 2, 0, 3 }; // G, B, R, A | ||
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int ff_ut_huff_cmp_len(const void *a, const void *b) | ||
{ | ||
const HuffEntry *aa = a, *bb = b; | ||
return (aa->len - bb->len)*256 + aa->sym - bb->sym; | ||
} |
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/* | ||
* Common Ut Video header | ||
* Copyright (c) 2011 Konstantin Shishkov | ||
* | ||
* This file is part of Libav. | ||
* | ||
* Libav is free software; you can redistribute it and/or | ||
* modify it under the terms of the GNU Lesser General Public | ||
* License as published by the Free Software Foundation; either | ||
* version 2.1 of the License, or (at your option) any later version. | ||
* | ||
* Libav is distributed in the hope that it will be useful, | ||
* but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
* Lesser General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with Libav; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
*/ | ||
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#ifndef AVCODEC_UTVIDEO_H | ||
#define AVCODEC_UTVIDEO_H | ||
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/** | ||
* @file | ||
* Common Ut Video header | ||
*/ | ||
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#include "libavutil/common.h" | ||
#include "avcodec.h" | ||
#include "dsputil.h" | ||
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enum { | ||
PRED_NONE = 0, | ||
PRED_LEFT, | ||
PRED_GRADIENT, | ||
PRED_MEDIAN, | ||
}; | ||
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enum { | ||
COMP_NONE = 0, | ||
COMP_HUFF, | ||
}; | ||
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/* | ||
* "Original format" markers. | ||
* Based on values gotten from the official VFW encoder. | ||
* They are not used during decoding, but they do have | ||
* an informative role on seeing what was input | ||
* to the encoder. | ||
*/ | ||
enum { | ||
UTVIDEO_RGB = MKTAG(0x00, 0x00, 0x01, 0x18), | ||
UTVIDEO_RGBA = MKTAG(0x00, 0x00, 0x02, 0x18), | ||
UTVIDEO_420 = MKTAG('Y', 'V', '1', '2'), | ||
UTVIDEO_422 = MKTAG('Y', 'U', 'Y', '2'), | ||
}; | ||
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/* Mapping of libavcodec prediction modes to Ut Video's */ | ||
extern const int ff_ut_pred_order[5]; | ||
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/* Order of RGB(A) planes in Ut Video */ | ||
extern const int ff_ut_rgb_order[4]; | ||
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typedef struct UtvideoContext { | ||
AVCodecContext *avctx; | ||
AVFrame pic; | ||
DSPContext dsp; | ||
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uint32_t frame_info_size, flags, frame_info; | ||
int planes; | ||
int slices; | ||
int compression; | ||
int interlaced; | ||
int frame_pred; | ||
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uint8_t *slice_bits, *slice_buffer; | ||
int slice_bits_size; | ||
} UtvideoContext; | ||
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typedef struct HuffEntry { | ||
uint8_t sym; | ||
uint8_t len; | ||
uint32_t code; | ||
} HuffEntry; | ||
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/* Compare huffman tree nodes */ | ||
int ff_ut_huff_cmp_len(const void *a, const void *b); | ||
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#endif /* AVCODEC_UTVIDEO_H */ |
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