mjpeg: Split off bits shared by MJPEG and LJPEG encoders

This obviates a dependency of the LJPEG encoder on mpegvideo.

1 files changed, 38 insertions, 0 deletions

diff --git a/libavcodec/mjpegenc_common.h b/libavcodec/mjpegenc_common.h
new file mode 100644
index 0000000000..57dc9ddb5b
--- /dev/null
+++ b/libavcodec/mjpegenc_common.h
@@ -0,0 +1,38 @@
+/*
+ * lossless JPEG shared bits
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MJPEGENC_COMMON_H
+#define AVCODEC_MJPEGENC_COMMON_H
+
+#include <stdint.h>
+
+#include "avcodec.h"
+#include "dsputil.h"
+#include "put_bits.h"
+
+void ff_mjpeg_encode_picture_header(AVCodecContext *avctx, PutBitContext *pb,
+                                    ScanTable *intra_scantable,
+                                    uint16_t intra_matrix[64]);
+void ff_mjpeg_encode_picture_trailer(PutBitContext *pb, int header_bits);
+void ff_mjpeg_encode_stuffing(PutBitContext *pbc);
+void ff_mjpeg_encode_dc(PutBitContext *pb, int val,
+                        uint8_t *huff_size, uint16_t *huff_code);
+
+#endif /* AVCODEC_MJPEGENC_COMMON_H */