FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/mpegvideodec.h
Date: 2022-05-23 03:24:52
Exec Total Coverage
Lines: 5 5 100.0%
Branches: 2 2 100.0%

Line Branch Exec Source
1 /*
2 * MPEGVideo decoders header
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4 * Copyright (c) 2002-2004 Michael Niedermayer
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * mpegvideo decoder header.
26 */
27
28 #ifndef AVCODEC_MPEGVIDEODEC_H
29 #define AVCODEC_MPEGVIDEODEC_H
30
31 #include "libavutil/frame.h"
32 #include "avcodec.h"
33 #include "get_bits.h"
34 #include "mpegpicture.h"
35 #include "mpegvideo.h"
36 #include "mpegvideodata.h"
37
38 #define FF_MPV_QSCALE_TYPE_MPEG1 0
39 #define FF_MPV_QSCALE_TYPE_MPEG2 1
40
41 /**
42 * Initialize the given MpegEncContext for decoding.
43 * the changed fields will not depend upon
44 * the prior state of the MpegEncContext.
45 */
46 void ff_mpv_decode_init(MpegEncContext *s, AVCodecContext *avctx);
47
48 int ff_mpv_common_frame_size_change(MpegEncContext *s);
49
50 int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx);
51 void ff_mpv_report_decode_progress(MpegEncContext *s);
52 void ff_mpv_frame_end(MpegEncContext *s);
53
54 int ff_mpv_export_qp_table(MpegEncContext *s, AVFrame *f, Picture *p, int qp_type);
55 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
56 void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
57 void ff_mpeg_flush(AVCodecContext *avctx);
58
59 void ff_print_debug_info(MpegEncContext *s, Picture *p, AVFrame *pict);
60
61 276312 static inline int mpeg_get_qscale(MpegEncContext *s)
62 {
63 276312 int qscale = get_bits(&s->gb, 5);
64
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276312 if (s->q_scale_type)
65 215174 return ff_mpeg2_non_linear_qscale[qscale];
66 else
67 61138 return qscale << 1;
68 }
69
70 #endif /* AVCODEC_MPEGVIDEODEC_H */
71