avcodec/mpegvideo: Move decoder-only stuff to a new header

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

1 files changed, 67 insertions, 0 deletions

diff --git a/libavcodec/mpegvideodec.h b/libavcodec/mpegvideodec.h
new file mode 100644
index 0000000000..0cda0af733
--- /dev/null
+++ b/libavcodec/mpegvideodec.h
@@ -0,0 +1,67 @@
+/*
+ * MPEGVideo decoders header
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ * Copyright (c) 2002-2004 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
+ * mpegvideo decoder header.
+ */
+
+#ifndef AVCODEC_MPEGVIDEODEC_H
+#define AVCODEC_MPEGVIDEODEC_H
+
+#include "libavutil/frame.h"
+#include "avcodec.h"
+#include "get_bits.h"
+#include "mpegpicture.h"
+#include "mpegvideo.h"
+#include "mpegvideodata.h"
+
+/**
+ * Initialize the given MpegEncContext for decoding.
+ * the changed fields will not depend upon
+ * the prior state of the MpegEncContext.
+ */
+void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
+
+int ff_mpv_common_frame_size_change(MpegEncContext *s);
+
+int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
+void ff_mpv_report_decode_progress(MpegEncContext *s);
+void ff_mpv_frame_end(MpegEncContext *s);
+
+int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
+int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
+void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
+void ff_mpeg_flush(AVCodecContext *avctx);
+
+void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
+
+static inline int mpeg_get_qscale(MpegEncContext *s)
+{
+    int qscale = get_bits(&s->gb, 5);
+    if (s->q_scale_type)
+        return ff_mpeg2_non_linear_qscale[qscale];
+    else
+        return qscale << 1;
+}
+
+#endif /* AVCODEC_MPEGVIDEODEC_H */