| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RAW PCM demuxers | ||
| 3 | * Copyright (c) 2002 Fabrice Bellard | ||
| 4 | * Copyright (c) 2022 Jack Bruienne | ||
| 5 | * | ||
| 6 | * This file is part of FFmpeg. | ||
| 7 | * | ||
| 8 | * FFmpeg is free software; you can redistribute it and/or | ||
| 9 | * modify it under the terms of the GNU Lesser General Public | ||
| 10 | * License as published by the Free Software Foundation; either | ||
| 11 | * version 2.1 of the License, or (at your option) any later version. | ||
| 12 | * | ||
| 13 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 16 | * Lesser General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU Lesser General Public | ||
| 19 | * License along with FFmpeg; if not, write to the Free Software | ||
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 21 | */ | ||
| 22 | |||
| 23 | #include "libavutil/avstring.h" | ||
| 24 | #include "avformat.h" | ||
| 25 | #include "demux.h" | ||
| 26 | #include "internal.h" | ||
| 27 | #include "pcm.h" | ||
| 28 | #include "libavutil/log.h" | ||
| 29 | #include "libavutil/opt.h" | ||
| 30 | #include "libavutil/avassert.h" | ||
| 31 | |||
| 32 | typedef struct DFPWMAudioDemuxerContext { | ||
| 33 | AVClass *class; | ||
| 34 | int sample_rate; | ||
| 35 | AVChannelLayout ch_layout; | ||
| 36 | } DFPWMAudioDemuxerContext; | ||
| 37 | |||
| 38 | 1 | static int dfpwm_read_header(AVFormatContext *s) | |
| 39 | { | ||
| 40 | 1 | DFPWMAudioDemuxerContext *s1 = s->priv_data; | |
| 41 | AVCodecParameters *par; | ||
| 42 | AVStream *st; | ||
| 43 | int ret; | ||
| 44 | |||
| 45 | 1 | st = avformat_new_stream(s, NULL); | |
| 46 |
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1 | if (!st) |
| 47 | ✗ | return AVERROR(ENOMEM); | |
| 48 | 1 | par = st->codecpar; | |
| 49 | |||
| 50 | 1 | par->codec_type = AVMEDIA_TYPE_AUDIO; | |
| 51 | 1 | par->codec_id = AV_CODEC_ID_DFPWM; | |
| 52 | 1 | par->sample_rate = s1->sample_rate; | |
| 53 | 1 | ret = av_channel_layout_copy(&par->ch_layout, &s1->ch_layout); | |
| 54 |
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1 | if (ret < 0) |
| 55 | ✗ | return ret; | |
| 56 | 1 | par->bits_per_coded_sample = 1; | |
| 57 | 1 | par->block_align = 1; | |
| 58 | |||
| 59 | 1 | avpriv_set_pts_info(st, 64, 1, par->sample_rate); | |
| 60 | 1 | return 0; | |
| 61 | } | ||
| 62 | |||
| 63 | static const AVOption dfpwm_options[] = { | ||
| 64 | { "sample_rate", "", offsetof(DFPWMAudioDemuxerContext, sample_rate), AV_OPT_TYPE_INT, {.i64 = 48000}, 0, INT_MAX, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 65 | { "ch_layout", "", offsetof(DFPWMAudioDemuxerContext, ch_layout), AV_OPT_TYPE_CHLAYOUT, {.str = "mono"}, 0, 0, AV_OPT_FLAG_DECODING_PARAM }, | ||
| 66 | { NULL }, | ||
| 67 | }; | ||
| 68 | static const AVClass dfpwm_demuxer_class = { | ||
| 69 | .class_name = "dfpwm demuxer", | ||
| 70 | .item_name = av_default_item_name, | ||
| 71 | .option = dfpwm_options, | ||
| 72 | .version = LIBAVUTIL_VERSION_INT, | ||
| 73 | }; | ||
| 74 | |||
| 75 | const FFInputFormat ff_dfpwm_demuxer = { | ||
| 76 | .p.name = "dfpwm", | ||
| 77 | .p.long_name = NULL_IF_CONFIG_SMALL("raw DFPWM1a"), | ||
| 78 | .p.flags = AVFMT_GENERIC_INDEX, | ||
| 79 | .p.extensions = "dfpwm", | ||
| 80 | .p.priv_class = &dfpwm_demuxer_class, | ||
| 81 | .priv_data_size = sizeof(DFPWMAudioDemuxerContext), | ||
| 82 | .read_header = dfpwm_read_header, | ||
| 83 | .read_packet = ff_pcm_read_packet, | ||
| 84 | .read_seek = ff_pcm_read_seek, | ||
| 85 | .raw_codec_id = AV_CODEC_ID_DFPWM, | ||
| 86 | }; | ||
| 87 |