LCOV - code coverage report
Current view: top level - libavcodec - mpeg12.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 9 11 81.8 %
Date: 2017-12-16 13:57:32 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * MPEG-1/2 common code
       3             :  * Copyright (c) 2007 Aurelien Jacobs <aurel@gnuage.org>
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #ifndef AVCODEC_MPEG12_H
      23             : #define AVCODEC_MPEG12_H
      24             : 
      25             : #include "mpeg12vlc.h"
      26             : #include "mpegvideo.h"
      27             : 
      28             : extern uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
      29             : 
      30             : void ff_mpeg12_common_init(MpegEncContext *s);
      31             : 
      32             : #define INIT_2D_VLC_RL(rl, static_size, flags)\
      33             : {\
      34             :     static RL_VLC_ELEM rl_vlc_table[static_size];\
      35             :     rl.rl_vlc[0] = rl_vlc_table;\
      36             :     ff_init_2d_vlc_rl(&rl, static_size, flags);\
      37             : }
      38             : 
      39             : void ff_init_2d_vlc_rl(RLTable *rl, unsigned static_size, int flags);
      40             : 
      41     1884228 : static inline int decode_dc(GetBitContext *gb, int component)
      42             : {
      43             :     int code, diff;
      44             : 
      45     1884228 :     if (component == 0) {
      46     1184408 :         code = get_vlc2(gb, ff_dc_lum_vlc.table, DC_VLC_BITS, 2);
      47             :     } else {
      48      699820 :         code = get_vlc2(gb, ff_dc_chroma_vlc.table, DC_VLC_BITS, 2);
      49             :     }
      50     1884228 :     if (code < 0){
      51           0 :         av_log(NULL, AV_LOG_ERROR, "invalid dc code at\n");
      52           0 :         return 0xffff;
      53             :     }
      54     1884228 :     if (code == 0) {
      55      247917 :         diff = 0;
      56             :     } else {
      57     1636311 :         diff = get_xbits(gb, code);
      58             :     }
      59     1884228 :     return diff;
      60             : }
      61             : 
      62             : int ff_mpeg1_decode_block_intra(GetBitContext *gb,
      63             :                                 const uint16_t *quant_matrix,
      64             :                                 uint8_t *const scantable, int last_dc[3],
      65             :                                 int16_t *block, int index, int qscale);
      66             : 
      67             : void ff_mpeg1_clean_buffers(MpegEncContext *s);
      68             : int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
      69             : 
      70             : void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
      71             : void ff_mpeg1_encode_mb(MpegEncContext *s, int16_t block[8][64],
      72             :                         int motion_x, int motion_y);
      73             : void ff_mpeg1_encode_init(MpegEncContext *s);
      74             : void ff_mpeg1_encode_slice_header(MpegEncContext *s);
      75             : 
      76             : void ff_mpeg12_find_best_frame_rate(AVRational frame_rate,
      77             :                                     int *code, int *ext_n, int *ext_d,
      78             :                                     int nonstandard);
      79             : 
      80             : #endif /* AVCODEC_MPEG12_H */

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