blob: cc94380535a46b1eeff4bf455b8376193a78145e
| 1 | /* |
| 2 | * Chomp bitstream filter |
| 3 | * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> |
| 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 | #include "avcodec.h" |
| 23 | #include "bsf.h" |
| 24 | #include "internal.h" |
| 25 | |
| 26 | static int chomp_filter(AVBSFContext *ctx, AVPacket *out) |
| 27 | { |
| 28 | AVPacket *in; |
| 29 | int ret; |
| 30 | |
| 31 | ret = ff_bsf_get_packet(ctx, &in); |
| 32 | if (ret < 0) |
| 33 | return ret; |
| 34 | |
| 35 | while (in->size > 0 && !in->data[in->size - 1]) |
| 36 | in->size--; |
| 37 | |
| 38 | av_packet_move_ref(out, in); |
| 39 | av_packet_free(&in); |
| 40 | |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * This filter removes a string of NULL bytes from the end of a packet. |
| 46 | */ |
| 47 | const AVBitStreamFilter ff_chomp_bsf = { |
| 48 | .name = "chomp", |
| 49 | .filter = chomp_filter, |
| 50 | }; |
| 51 |