avcodec/mpeg4video.h: Move decoder-only parts to a new header

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

1 files changed, 99 insertions, 0 deletions

diff --git a/libavcodec/mpeg4videodec.h b/libavcodec/mpeg4videodec.h
new file mode 100644
index 0000000000..65d846aed0
--- /dev/null
+++ b/libavcodec/mpeg4videodec.h
@@ -0,0 +1,99 @@
+/*
+ * MPEG-4 decoder internal header.
+ * Copyright (c) 2000,2001 Fabrice Bellard
+ * Copyright (c) 2002-2010 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MPEG4VIDEODEC_H
+#define AVCODEC_MPEG4VIDEODEC_H
+
+#include <stdint.h>
+
+#include "get_bits.h"
+#include "mpegvideo.h"
+
+
+typedef struct Mpeg4DecContext {
+    MpegEncContext m;
+
+    /// number of bits to represent the fractional part of time
+    int time_increment_bits;
+    int shape;
+    int vol_sprite_usage;
+    int sprite_brightness_change;
+    int num_sprite_warping_points;
+    /// sprite trajectory points
+    uint16_t sprite_traj[4][2];
+    /// sprite shift [isChroma]
+    int sprite_shift[2];
+
+    // reversible vlc
+    int rvlc;
+    /// could this stream contain resync markers
+    int resync_marker;
+    /// time distance of first I -> B, used for interlaced B-frames
+    int t_frame;
+
+    int new_pred;
+    int enhancement_type;
+    int scalability;
+
+    /// QP above which the ac VLC should be used for intra dc
+    int intra_dc_threshold;
+
+    /* bug workarounds */
+    int divx_version;
+    int divx_build;
+    int xvid_build;
+    int lavc_build;
+
+    int vo_type;
+
+    /// flag for having shown the warning about invalid Divx B-frames
+    int showed_packed_warning;
+    /** does the stream contain the low_delay flag,
+     *  used to work around buggy encoders. */
+    int vol_control_parameters;
+    int cplx_estimation_trash_i;
+    int cplx_estimation_trash_p;
+    int cplx_estimation_trash_b;
+
+    int rgb;
+
+    int32_t block32[12][64];
+    // 0 = DCT, 1 = DPCM top to bottom scan, -1 = DPCM bottom to top scan
+    int dpcm_direction;
+    int16_t dpcm_macroblock[3][256];
+} Mpeg4DecContext;
+
+int ff_mpeg4_decode_picture_header(Mpeg4DecContext *ctx, GetBitContext *gb,
+                                   int header, int parse_only);
+void ff_mpeg4_decode_studio(MpegEncContext *s, uint8_t *dest_y, uint8_t *dest_cb,
+                            uint8_t *dest_cr, int block_size, int uvlinesize,
+                            int dct_linesize, int dct_offset);
+int ff_mpeg4_decode_partitions(Mpeg4DecContext *ctx);
+int ff_mpeg4_decode_video_packet_header(Mpeg4DecContext *ctx);
+int ff_mpeg4_decode_studio_slice_header(Mpeg4DecContext *ctx);
+int ff_mpeg4_workaround_bugs(AVCodecContext *avctx);
+void ff_mpeg4_pred_ac(MpegEncContext *s, int16_t *block, int n,
+                      int dir);
+int ff_mpeg4_frame_end(AVCodecContext *avctx, const uint8_t *buf, int buf_size);
+
+
+#endif