| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * Copyright (c) 2008 Reimar Döffinger | ||
| 3 | * | ||
| 4 | * This file is part of FFmpeg. | ||
| 5 | * | ||
| 6 | * FFmpeg is free software; you can redistribute it and/or | ||
| 7 | * modify it under the terms of the GNU Lesser General Public | ||
| 8 | * License as published by the Free Software Foundation; either | ||
| 9 | * version 2.1 of the License, or (at your option) any later version. | ||
| 10 | * | ||
| 11 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 14 | * Lesser General Public License for more details. | ||
| 15 | * | ||
| 16 | * You should have received a copy of the GNU Lesser General Public | ||
| 17 | * License along with FFmpeg; if not, write to the Free Software | ||
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 19 | */ | ||
| 20 | |||
| 21 | #include "libavutil/common.h" | ||
| 22 | #include "libavutil/intreadwrite.h" | ||
| 23 | #include "bsf.h" | ||
| 24 | #include "bsf_internal.h" | ||
| 25 | |||
| 26 | ✗ | static int text2movsub(AVBSFContext *ctx, AVPacket *out) | |
| 27 | { | ||
| 28 | AVPacket *in; | ||
| 29 | ✗ | int ret = 0; | |
| 30 | |||
| 31 | ✗ | ret = ff_bsf_get_packet(ctx, &in); | |
| 32 | ✗ | if (ret < 0) | |
| 33 | ✗ | return ret; | |
| 34 | |||
| 35 | ✗ | if (in->size > 0xffff) { | |
| 36 | ✗ | ret = AVERROR_INVALIDDATA; | |
| 37 | ✗ | goto fail; | |
| 38 | } | ||
| 39 | |||
| 40 | ✗ | ret = av_new_packet(out, in->size + 2); | |
| 41 | ✗ | if (ret < 0) { | |
| 42 | ✗ | ret = AVERROR(ENOMEM); | |
| 43 | ✗ | goto fail; | |
| 44 | } | ||
| 45 | |||
| 46 | ✗ | ret = av_packet_copy_props(out, in); | |
| 47 | ✗ | if (ret < 0) | |
| 48 | ✗ | goto fail; | |
| 49 | |||
| 50 | ✗ | AV_WB16(out->data, in->size); | |
| 51 | ✗ | memcpy(out->data + 2, in->data, in->size); | |
| 52 | |||
| 53 | ✗ | fail: | |
| 54 | ✗ | if (ret < 0) | |
| 55 | ✗ | av_packet_unref(out); | |
| 56 | ✗ | av_packet_free(&in); | |
| 57 | ✗ | return ret; | |
| 58 | } | ||
| 59 | |||
| 60 | const FFBitStreamFilter ff_text2movsub_bsf = { | ||
| 61 | .p.name = "text2movsub", | ||
| 62 | .filter = text2movsub, | ||
| 63 | }; | ||
| 64 | |||
| 65 | ✗ | static int mov2textsub(AVBSFContext *ctx, AVPacket *pkt) | |
| 66 | { | ||
| 67 | ✗ | int ret = 0; | |
| 68 | |||
| 69 | ✗ | ret = ff_bsf_get_packet_ref(ctx, pkt); | |
| 70 | ✗ | if (ret < 0) | |
| 71 | ✗ | return ret; | |
| 72 | |||
| 73 | ✗ | if (pkt->size < 2) { | |
| 74 | ✗ | av_packet_unref(pkt); | |
| 75 | ✗ | return AVERROR_INVALIDDATA; | |
| 76 | } | ||
| 77 | |||
| 78 | ✗ | pkt->size = FFMIN(pkt->size - 2, AV_RB16(pkt->data)); | |
| 79 | ✗ | pkt->data += 2; | |
| 80 | |||
| 81 | ✗ | return 0; | |
| 82 | } | ||
| 83 | |||
| 84 | const FFBitStreamFilter ff_mov2textsub_bsf = { | ||
| 85 | .p.name = "mov2textsub", | ||
| 86 | .filter = mov2textsub, | ||
| 87 | }; | ||
| 88 |