split ljpeg encoder out of mjpeg.c

Originally committed as revision 9057 to svn://svn.ffmpeg.org/ffmpeg/trunk

1 files changed, 60 insertions, 0 deletions

diff --git a/libavcodec/mjpegenc.h b/libavcodec/mjpegenc.h
new file mode 100644
index 0000000000..12867bb224
--- /dev/null
+++ b/libavcodec/mjpegenc.h
@@ -0,0 +1,60 @@
+/*
+ * MJPEG encoder
+ * 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
+ *
+ * Support for external huffman table, various fixes (AVID workaround),
+ * aspecting, new decode_frame mechanism and apple mjpeg-b support
+ *                                  by Alex Beregszaszi
+ */
+
+/**
+ * @file mjpegenc.h
+ * MJPEG encoder.
+ */
+
+#ifndef MJPEGENC_H
+#define MJPEGENC_H
+
+#include "dsputil.h"
+#include "mpegvideo.h"
+
+typedef struct MJpegContext {
+    uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
+    uint16_t huff_code_dc_luminance[12];
+    uint8_t huff_size_dc_chrominance[12];
+    uint16_t huff_code_dc_chrominance[12];
+
+    uint8_t huff_size_ac_luminance[256];
+    uint16_t huff_code_ac_luminance[256];
+    uint8_t huff_size_ac_chrominance[256];
+    uint16_t huff_code_ac_chrominance[256];
+} MJpegContext;
+
+int mjpeg_init(MpegEncContext *s);
+void mjpeg_close(MpegEncContext *s);
+void mjpeg_picture_header(MpegEncContext *s);
+void mjpeg_picture_trailer(MpegEncContext *s);
+void ff_mjpeg_stuffing(PutBitContext *pbc);
+void mjpeg_encode_dc(MpegEncContext *s, int val,
+                     uint8_t *huff_size, uint16_t *huff_code);
+void mjpeg_encode_mb(MpegEncContext *s, DCTELEM block[6][64]);
+
+#endif /* MJPEGENC_H */