| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | #include "bsf.h" | ||
| 20 | #include "bsf_internal.h" | ||
| 21 | #include "libavutil/intreadwrite.h" | ||
| 22 | #include "libavutil/opt.h" | ||
| 23 | |||
| 24 | typedef struct OpusBSFContext { | ||
| 25 | const AVClass *class; | ||
| 26 | int gain; | ||
| 27 | } OpusBSFContext; | ||
| 28 | |||
| 29 | ✗ | static int opus_metadata_init(AVBSFContext *bsfc) | |
| 30 | { | ||
| 31 | ✗ | OpusBSFContext *s = bsfc->priv_data; | |
| 32 | |||
| 33 | ✗ | if (bsfc->par_out->extradata_size < 19) | |
| 34 | ✗ | return AVERROR_INVALIDDATA; | |
| 35 | |||
| 36 | ✗ | AV_WL16(bsfc->par_out->extradata + 16, s->gain); | |
| 37 | |||
| 38 | ✗ | return 0; | |
| 39 | } | ||
| 40 | |||
| 41 | #define OFFSET(x) offsetof(OpusBSFContext, x) | ||
| 42 | #define FLAGS (AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_BSF_PARAM) | ||
| 43 | static const AVOption opus_metadata_options[] = { | ||
| 44 | { "gain", "Gain, actual amplification is pow(10, gain/(20.0*256))", OFFSET(gain), | ||
| 45 | AV_OPT_TYPE_INT, { .i64 = 0 }, -(INT16_MAX + 1), INT16_MAX, .flags = FLAGS }, | ||
| 46 | |||
| 47 | { NULL }, | ||
| 48 | }; | ||
| 49 | |||
| 50 | static const AVClass opus_metadata_class = { | ||
| 51 | .class_name = "opus_metadata_bsf", | ||
| 52 | .item_name = av_default_item_name, | ||
| 53 | .option = opus_metadata_options, | ||
| 54 | .version = LIBAVUTIL_VERSION_INT, | ||
| 55 | }; | ||
| 56 | |||
| 57 | static const enum AVCodecID codec_ids[] = { | ||
| 58 | AV_CODEC_ID_OPUS, AV_CODEC_ID_NONE, | ||
| 59 | }; | ||
| 60 | |||
| 61 | const FFBitStreamFilter ff_opus_metadata_bsf = { | ||
| 62 | .p.name = "opus_metadata", | ||
| 63 | .p.codec_ids = codec_ids, | ||
| 64 | .p.priv_class = &opus_metadata_class, | ||
| 65 | .priv_data_size = sizeof(OpusBSFContext), | ||
| 66 | .init = &opus_metadata_init, | ||
| 67 | .filter = &ff_bsf_get_packet_ref, | ||
| 68 | }; | ||
| 69 |