huffyuv: split encoder and decoder into separate files.

libavcodec/Makefile

@@ -167,8 +167,8 @@ OBJS-$(CONFIG_EIGHTSVX_FIB_DECODER)    += 8svx.o
 OBJS-$(CONFIG_ESCAPE124_DECODER)       += escape124.o
 OBJS-$(CONFIG_FFV1_DECODER)            += ffv1dec.o ffv1.o
 OBJS-$(CONFIG_FFV1_ENCODER)            += ffv1enc.o ffv1.o
-OBJS-$(CONFIG_FFVHUFF_DECODER)         += huffyuv.o
-OBJS-$(CONFIG_FFVHUFF_ENCODER)         += huffyuv.o
+OBJS-$(CONFIG_FFVHUFF_DECODER)         += huffyuv.o huffyuvdec.o
+OBJS-$(CONFIG_FFVHUFF_ENCODER)         += huffyuv.o huffyuvenc.o
 OBJS-$(CONFIG_FLAC_DECODER)            += flacdec.o flacdata.o flac.o flacdsp.o
 OBJS-$(CONFIG_FLAC_ENCODER)            += flacenc.o flacdata.o flac.o flacdsp.o
 OBJS-$(CONFIG_FLASHSV_DECODER)         += flashsv.o
@@ -199,8 +199,8 @@ OBJS-$(CONFIG_H264_DECODER)            += h264.o                               \
 OBJS-$(CONFIG_H264_DXVA2_HWACCEL)      += dxva2_h264.o
 OBJS-$(CONFIG_H264_VAAPI_HWACCEL)      += vaapi_h264.o
 OBJS-$(CONFIG_H264_VDA_HWACCEL)        += vda_h264.o
-OBJS-$(CONFIG_HUFFYUV_DECODER)         += huffyuv.o
-OBJS-$(CONFIG_HUFFYUV_ENCODER)         += huffyuv.o
+OBJS-$(CONFIG_HUFFYUV_DECODER)         += huffyuv.o huffyuvdec.o
+OBJS-$(CONFIG_HUFFYUV_ENCODER)         += huffyuv.o huffyuvenc.o
 OBJS-$(CONFIG_IAC_DECODER)             += imc.o
 OBJS-$(CONFIG_IDCIN_DECODER)           += idcinvideo.o
 OBJS-$(CONFIG_IFF_BYTERUN1_DECODER)    += iff.o

libavcodec/huffyuv.h

+/*
+ * Copyright (c) 2002-2003 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 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
+ */
+
+/**
+ * @file
+ * huffyuv codec for libavcodec.
+ */
+
+#ifndef AVCODEC_HUFFYUV_H
+#define AVCODEC_HUFFYUV_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "get_bits.h"
+#include "put_bits.h"
+
+#define VLC_BITS 11
+
+#if HAVE_BIGENDIAN
+#define B 3
+#define G 2
+#define R 1
+#define A 0
+#else
+#define B 0
+#define G 1
+#define R 2
+#define A 3
+#endif
+
+typedef enum Predictor {
+    LEFT = 0,
+    PLANE,
+    MEDIAN,
+} Predictor;
+
+typedef struct HYuvContext {
+    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 width, height;
+    int flags;
+    int context;
+    int picture_number;
+    int last_slice_end;
+    uint8_t *temp[3];
+    uint64_t stats[3][256];
+    uint8_t len[3][256];
+    uint32_t bits[3][256];
+    uint32_t pix_bgr_map[1<<VLC_BITS];
+    VLC vlc[6];                             //Y,U,V,YY,YU,YV
+    AVFrame picture;
+    uint8_t *bitstream_buffer;
+    unsigned int bitstream_buffer_size;
+    DSPContext dsp;
+} 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);
+
+#endif /* AVCODEC_HUFFYUV_H */