1 files changed, 112 insertions, 0 deletions
diff --git a/contrib/ffmpeg/libavcodec/mjpegdec.h b/contrib/ffmpeg/libavcodec/mjpegdec.h
new file mode 100644
index 000000000..d97b176a9
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/mjpegdec.h
@@ -0,0 +1,112 @@
+/*
+ * MJPEG decoder
+ * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2003 Alex Beregszaszi
+ * Copyright (c) 2003-2004 Michael Niedermayer
+ *
+ * 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 mjpegdec.h
+ * MJPEG decoder.
+ */
+
+#ifndef FFMPEG_MJPEGDEC_H
+#define FFMPEG_MJPEGDEC_H
+
+#include "avcodec.h"
+#include "bitstream.h"
+#include "dsputil.h"
+#include "mpegvideo.h"
+
+#define MAX_COMPONENTS 4
+
+typedef struct MJpegDecodeContext {
+    AVCodecContext *avctx;
+    GetBitContext gb;
+
+    int start_code; /* current start code */
+    int buffer_size;
+    uint8_t *buffer;
+
+    int16_t quant_matrixes[4][64];
+    VLC vlcs[2][4];
+    int qscale[4];      ///< quantizer scale calculated from quant_matrixes
+
+    int org_height;  /* size given at codec init */
+    int first_picture;    /* true if decoding first picture */
+    int interlaced;     /* true if interlaced */
+    int bottom_field;   /* true if bottom field */
+    int lossless;
+    int ls;
+    int progressive;
+    int rgb;
+    int rct;            /* standard rct */
+    int pegasus_rct;    /* pegasus reversible colorspace transform */
+    int bits;           /* bits per component */
+
+    int maxval;
+    int near;         ///< near lossless bound (si 0 for lossless)
+    int t1,t2,t3;
+    int reset;        ///< context halfing intervall ?rename
+
+    int width, height;
+    int mb_width, mb_height;
+    int nb_components;
+    int component_id[MAX_COMPONENTS];
+    int h_count[MAX_COMPONENTS]; /* horizontal and vertical count for each component */
+    int v_count[MAX_COMPONENTS];
+    int comp_index[MAX_COMPONENTS];
+    int dc_index[MAX_COMPONENTS];
+    int ac_index[MAX_COMPONENTS];
+    int nb_blocks[MAX_COMPONENTS];
+    int h_scount[MAX_COMPONENTS];
+    int v_scount[MAX_COMPONENTS];
+    int h_max, v_max; /* maximum h and v counts */
+    int quant_index[4];   /* quant table index for each component */
+    int last_dc[MAX_COMPONENTS]; /* last DEQUANTIZED dc (XXX: am I right to do that ?) */
+    AVFrame picture; /* picture structure */
+    int linesize[MAX_COMPONENTS];                   ///< linesize << interlaced
+    int8_t *qscale_table;
+    DECLARE_ALIGNED_8(DCTELEM, block[64]);
+    ScanTable scantable;
+    DSPContext dsp;
+
+    int restart_interval;
+    int restart_count;
+
+    int buggy_avid;
+    int cs_itu601;
+    int interlace_polarity;
+
+    int mjpb_skiptosod;
+
+    int cur_scan; /* current scan, used by JPEG-LS */
+} MJpegDecodeContext;
+
+int ff_mjpeg_decode_init(AVCodecContext *avctx);
+int ff_mjpeg_decode_end(AVCodecContext *avctx);
+int ff_mjpeg_decode_frame(AVCodecContext *avctx,
+                          void *data, int *data_size,
+                          const uint8_t *buf, int buf_size);
+int ff_mjpeg_decode_dqt(MJpegDecodeContext *s);
+int ff_mjpeg_decode_dht(MJpegDecodeContext *s);
+int ff_mjpeg_decode_sof(MJpegDecodeContext *s);
+int ff_mjpeg_decode_sos(MJpegDecodeContext *s);
+
+#endif /* FFMPEG_MJPEGDEC_H */