| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * SoX native format muxer | ||
| 3 | * Copyright (c) 2009 Daniel Verkamp <daniel@drv.nu> | ||
| 4 | * | ||
| 5 | * Based on libSoX sox-fmt.c | ||
| 6 | * Copyright (c) 2008 robs@users.sourceforge.net | ||
| 7 | * | ||
| 8 | * This file is part of FFmpeg. | ||
| 9 | * | ||
| 10 | * FFmpeg is free software; you can redistribute it and/or | ||
| 11 | * modify it under the terms of the GNU Lesser General Public | ||
| 12 | * License as published by the Free Software Foundation; either | ||
| 13 | * version 2.1 of the License, or (at your option) any later version. | ||
| 14 | * | ||
| 15 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 18 | * Lesser General Public License for more details. | ||
| 19 | * | ||
| 20 | * You should have received a copy of the GNU Lesser General Public | ||
| 21 | * License along with FFmpeg; if not, write to the Free Software | ||
| 22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 23 | */ | ||
| 24 | |||
| 25 | /** | ||
| 26 | * @file | ||
| 27 | * SoX native format muxer | ||
| 28 | * @author Daniel Verkamp | ||
| 29 | * @see http://wiki.multimedia.cx/index.php?title=SoX_native_intermediate_format | ||
| 30 | */ | ||
| 31 | |||
| 32 | #include "libavutil/intreadwrite.h" | ||
| 33 | #include "libavutil/intfloat.h" | ||
| 34 | #include "libavutil/dict.h" | ||
| 35 | #include "avformat.h" | ||
| 36 | #include "avio_internal.h" | ||
| 37 | #include "mux.h" | ||
| 38 | #include "rawenc.h" | ||
| 39 | #include "sox.h" | ||
| 40 | |||
| 41 | typedef struct SoXContext { | ||
| 42 | int64_t header_size; | ||
| 43 | } SoXContext; | ||
| 44 | |||
| 45 | 1 | static int sox_write_header(AVFormatContext *s) | |
| 46 | { | ||
| 47 | 1 | SoXContext *sox = s->priv_data; | |
| 48 | 1 | AVIOContext *pb = s->pb; | |
| 49 | 1 | AVCodecParameters *par = s->streams[0]->codecpar; | |
| 50 | AVDictionaryEntry *comment; | ||
| 51 | 1 | size_t comment_len = 0, comment_size; | |
| 52 | |||
| 53 | 1 | comment = av_dict_get(s->metadata, "comment", NULL, 0); | |
| 54 |
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1 | if (comment) |
| 55 | ✗ | comment_len = strlen(comment->value); | |
| 56 | 1 | comment_size = FFALIGN(comment_len, 8); | |
| 57 | |||
| 58 | 1 | sox->header_size = SOX_FIXED_HDR + comment_size; | |
| 59 | |||
| 60 |
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1 | if (par->codec_id == AV_CODEC_ID_PCM_S32LE) { |
| 61 | 1 | ffio_wfourcc(pb, ".SoX"); | |
| 62 | 1 | avio_wl32(pb, sox->header_size); | |
| 63 | 1 | avio_wl64(pb, 0); /* number of samples */ | |
| 64 | 1 | avio_wl64(pb, av_double2int(par->sample_rate)); | |
| 65 | 1 | avio_wl32(pb, par->ch_layout.nb_channels); | |
| 66 | 1 | avio_wl32(pb, comment_size); | |
| 67 | ✗ | } else if (par->codec_id == AV_CODEC_ID_PCM_S32BE) { | |
| 68 | ✗ | ffio_wfourcc(pb, "XoS."); | |
| 69 | ✗ | avio_wb32(pb, sox->header_size); | |
| 70 | ✗ | avio_wb64(pb, 0); /* number of samples */ | |
| 71 | ✗ | avio_wb64(pb, av_double2int(par->sample_rate)); | |
| 72 | ✗ | avio_wb32(pb, par->ch_layout.nb_channels); | |
| 73 | ✗ | avio_wb32(pb, comment_size); | |
| 74 | } else { | ||
| 75 | ✗ | av_log(s, AV_LOG_ERROR, "invalid codec; use pcm_s32le or pcm_s32be\n"); | |
| 76 | ✗ | return AVERROR(EINVAL); | |
| 77 | } | ||
| 78 | |||
| 79 |
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1 | if (comment_len) |
| 80 | ✗ | avio_write(pb, comment->value, comment_len); | |
| 81 | |||
| 82 | 1 | ffio_fill(pb, 0, comment_size - comment_len); | |
| 83 | |||
| 84 | 1 | return 0; | |
| 85 | } | ||
| 86 | |||
| 87 | 1 | static int sox_write_trailer(AVFormatContext *s) | |
| 88 | { | ||
| 89 | 1 | SoXContext *sox = s->priv_data; | |
| 90 | 1 | AVIOContext *pb = s->pb; | |
| 91 | 1 | AVCodecParameters *par = s->streams[0]->codecpar; | |
| 92 | |||
| 93 |
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1 | if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) { |
| 94 | /* update number of samples */ | ||
| 95 | 1 | int64_t file_size = avio_tell(pb); | |
| 96 | 1 | int64_t num_samples = (file_size - sox->header_size - 4LL) >> 2LL; | |
| 97 | 1 | avio_seek(pb, 8, SEEK_SET); | |
| 98 |
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1 | if (par->codec_id == AV_CODEC_ID_PCM_S32LE) { |
| 99 | 1 | avio_wl64(pb, num_samples); | |
| 100 | } else | ||
| 101 | ✗ | avio_wb64(pb, num_samples); | |
| 102 | 1 | avio_seek(pb, file_size, SEEK_SET); | |
| 103 | } | ||
| 104 | |||
| 105 | 1 | return 0; | |
| 106 | } | ||
| 107 | |||
| 108 | const FFOutputFormat ff_sox_muxer = { | ||
| 109 | .p.name = "sox", | ||
| 110 | .p.long_name = NULL_IF_CONFIG_SMALL("SoX (Sound eXchange) native"), | ||
| 111 | .p.extensions = "sox", | ||
| 112 | .priv_data_size = sizeof(SoXContext), | ||
| 113 | .p.audio_codec = AV_CODEC_ID_PCM_S32LE, | ||
| 114 | .p.video_codec = AV_CODEC_ID_NONE, | ||
| 115 | .p.subtitle_codec = AV_CODEC_ID_NONE, | ||
| 116 | .write_header = sox_write_header, | ||
| 117 | .write_packet = ff_raw_write_packet, | ||
| 118 | .write_trailer = sox_write_trailer, | ||
| 119 | .p.flags = AVFMT_NOTIMESTAMPS, | ||
| 120 | .flags_internal = FF_OFMT_FLAG_MAX_ONE_OF_EACH, | ||
| 121 | }; | ||
| 122 |