| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RAW AVS3-P2/IEEE1857.10 video demuxer | ||
| 3 | * Copyright (c) 2020 Zhenyu Wang <wangzhenyu@pkusz.edu.cn> | ||
| 4 | * Bingjie Han <hanbj@pkusz.edu.cn> | ||
| 5 | * Huiwen Ren <hwrenx@gmail.com> | ||
| 6 | * | ||
| 7 | * This file is part of FFmpeg. | ||
| 8 | * | ||
| 9 | * FFmpeg is free software; you can redistribute it and/or | ||
| 10 | * modify it under the terms of the GNU Lesser General Public | ||
| 11 | * License as published by the Free Software Foundation; either | ||
| 12 | * version 2.1 of the License, or (at your option) any later version. | ||
| 13 | * | ||
| 14 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 17 | * Lesser General Public License for more details. | ||
| 18 | * | ||
| 19 | * You should have received a copy of the GNU Lesser General Public | ||
| 20 | * License along with FFmpeg; if not, write to the Free Software | ||
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include "libavcodec/avs3.h" | ||
| 25 | #include "libavcodec/startcode.h" | ||
| 26 | #include "avformat.h" | ||
| 27 | #include "rawdec.h" | ||
| 28 | |||
| 29 | 7125 | static int avs3video_probe(const AVProbeData *p) | |
| 30 | { | ||
| 31 | 7125 | const uint8_t *ptr = p->buf, *end = p->buf + p->buf_size; | |
| 32 | 7125 | uint32_t code = -1; | |
| 33 | 7125 | uint8_t state = 0; | |
| 34 | 7125 | int pic = 0, seq = 0, slice_pos = 0; | |
| 35 | 7125 | int ret = 0; | |
| 36 | |||
| 37 |
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25996 | while (ptr < end) { |
| 38 | 20771 | ptr = avpriv_find_start_code(ptr, end, &code); | |
| 39 | 20771 | state = code & 0xFF; | |
| 40 |
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20771 | if ((code & 0xFFFFFF00) == 0x100) { |
| 41 |
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15594 | if (state < AVS3_SEQ_START_CODE) { |
| 42 |
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13975 | if (code < slice_pos) |
| 43 | 978 | return 0; | |
| 44 | 12997 | slice_pos = code; | |
| 45 | } else { | ||
| 46 | 1619 | slice_pos = 0; | |
| 47 | } | ||
| 48 |
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14616 | if (state == AVS3_SEQ_START_CODE) { |
| 49 | 56 | seq++; | |
| 50 |
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56 | if (*ptr != AVS3_PROFILE_BASELINE_MAIN && *ptr != AVS3_PROFILE_BASELINE_MAIN10) |
| 51 | 55 | return 0; | |
| 52 |
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14560 | } else if (AVS3_ISPIC(state)) { |
| 53 | 286 | pic++; | |
| 54 |
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14274 | } else if ((state == AVS3_UNDEF_START_CODE) || |
| 55 | (state > AVS3_VIDEO_EDIT_CODE)) { | ||
| 56 | 867 | return 0; | |
| 57 | } | ||
| 58 | } | ||
| 59 | } | ||
| 60 | |||
| 61 |
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5225 | if (seq && pic && av_match_ext(p->filename, "avs3")) { |
| 62 | ✗ | ret = AVPROBE_SCORE_MAX; | |
| 63 | } | ||
| 64 | |||
| 65 | 5225 | return ret; | |
| 66 | } | ||
| 67 | |||
| 68 | FF_DEF_RAWVIDEO_DEMUXER(avs3, "raw AVS3-P2/IEEE1857.10", avs3video_probe, "avs3", AV_CODEC_ID_AVS3) | ||
| 69 |