ffmpeg-2.8.5

git-svn-id: svn://kolibrios.org@6147 a494cfbc-eb01-0410-851d-a64ba20cac60

contrib/sdk/sources/ffmpeg/ffmpeg-2.8/libavcodec/huffyuv.h

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2002-2014 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
+ * the algorithm used
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * huffyuv codec for libavcodec.
+ */
+
+#ifndef AVCODEC_HUFFYUV_H
+#define AVCODEC_HUFFYUV_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "bswapdsp.h"
+#include "get_bits.h"
+#include "huffyuvdsp.h"
+#include "huffyuvencdsp.h"
+#include "put_bits.h"
+#include "lossless_videodsp.h"
+
+#define VLC_BITS 12
+
+#define MAX_BITS 16
+#define MAX_N (1<<MAX_BITS)
+#define MAX_VLC_N 16384
+
+typedef enum Predictor {
+    LEFT = 0,
+    PLANE,
+    MEDIAN,
+} Predictor;
+
+typedef struct HYuvContext {
+    AVClass *class;
+    AVCodecContext *avctx;
+    Predictor predictor;
+    GetBitContext gb;
+    PutBitContext pb;
+    int interlaced;
+    int decorrelate;
+    int bitstream_bpp;
+    int version;
+    int yuy2;                               //use yuy2 instead of 422P
+    int bgr32;                              //use bgr32 instead of bgr24
+    int bps;
+    int n;                                  // 1<<bps
+    int vlc_n;                              // number of vlc codes (FFMIN(1<<bps, MAX_VLC_N))
+    int alpha;
+    int chroma;
+    int yuv;
+    int chroma_h_shift;
+    int chroma_v_shift;
+    int width, height;
+    int flags;
+    int context;
+    int picture_number;
+    int last_slice_end;
+    uint8_t *temp[3];
+    uint16_t *temp16[3];                    ///< identical to temp but 16bit type
+    uint64_t stats[4][MAX_VLC_N];
+    uint8_t len[4][MAX_VLC_N];
+    uint32_t bits[4][MAX_VLC_N];
+    uint32_t pix_bgr_map[1<<VLC_BITS];
+    VLC vlc[8];                             //Y,U,V,A,YY,YU,YV,AA
+    uint8_t *bitstream_buffer;
+    unsigned int bitstream_buffer_size;
+    BswapDSPContext bdsp;
+    HuffYUVDSPContext hdsp;
+    HuffYUVEncDSPContext hencdsp;
+    LLVidDSPContext llviddsp;
+    int non_determ; // non-deterministic, multi-threaded encoder allowed
+} HYuvContext;
+
+void ff_huffyuv_common_init(AVCodecContext *s);
+void ff_huffyuv_common_end(HYuvContext *s);
+int  ff_huffyuv_alloc_temp(HYuvContext *s);
+int ff_huffyuv_generate_bits_table(uint32_t *dst, const uint8_t *len_table, int n);
+
+#endif /* AVCODEC_HUFFYUV_H */