X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmjpegdec.h;h=bfa987d3c526669a5b25a70c334934e11f8d19f7;hb=908e22b93a9532948d62e43b700d5c91ea37db2a;hp=286e3a2d45b5453a0bfa093f7834b0c663610be8;hpb=82ec791834f77963ef5b0b5baaa786d1a3f19166;p=ffmpeg

diff --git a/libavcodec/mjpegdec.h b/libavcodec/mjpegdec.h
index 286e3a2d45b..bfa987d3c52 100644
--- a/libavcodec/mjpegdec.h
+++ b/libavcodec/mjpegdec.h
@@ -1,40 +1,130 @@
 /*
  * MJPEG decoder
- * Copyright (c) 2000, 2001 Fabrice Bellard.
+ * Copyright (c) 2000, 2001 Fabrice Bellard
  * Copyright (c) 2003 Alex Beregszaszi
  * Copyright (c) 2003-2004 Michael Niedermayer
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 /**
- * @file mjpegdec.h
+ * @file
  * MJPEG decoder.
  */
 
-#ifndef MJPEGDEC_H
-#define MJPEGDEC_H
+#ifndef AVCODEC_MJPEGDEC_H
+#define AVCODEC_MJPEGDEC_H
+
+#include "libavutil/log.h"
 
 #include "avcodec.h"
+#include "get_bits.h"
+#include "dsputil.h"
+
+#define MAX_COMPONENTS 4
+
+typedef struct MJpegDecodeContext {
+    AVClass *class;
+    AVCodecContext *avctx;
+    GetBitContext gb;
+
+    int start_code; /* current start code */
+    int buffer_size;
+    uint8_t *buffer;
+
+    int16_t quant_matrixes[4][64];
+    VLC vlcs[3][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 block_stride[MAX_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 */
+    AVFrame *picture_ptr; /* pointer to picture structure */
+    int got_picture;                                ///< we found a SOF and picture is valid, too.
+    int linesize[MAX_COMPONENTS];                   ///< linesize << interlaced
+    int8_t *qscale_table;
+    DECLARE_ALIGNED(16, DCTELEM, block)[64];
+    DCTELEM (*blocks[MAX_COMPONENTS])[64]; ///< intermediate sums (progressive mode)
+    uint8_t *last_nnz[MAX_COMPONENTS];
+    uint64_t coefs_finished[MAX_COMPONENTS]; ///< bitmask of which coefs have been completely decoded (progressive mode)
+    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 */
+    int flipped; /* true if picture is flipped */
+
+    uint16_t (*ljpeg_buffer)[4];
+    unsigned int ljpeg_buffer_size;
+
+    int extern_huff;
+} 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,
-                          uint8_t *buf, int buf_size);
+                          AVPacket *avpkt);
+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,
+                        const uint8_t *mb_bitmask, const AVFrame *reference);
+int ff_mjpeg_find_marker(MJpegDecodeContext *s,
+                         const uint8_t **buf_ptr, const uint8_t *buf_end,
+                         const uint8_t **unescaped_buf_ptr, int *unescaped_buf_size);
 
-#endif /* MJPEGDEC_H */
+#endif /* AVCODEC_MJPEGDEC_H */