| /* |
| * WAV muxer |
| * Copyright (c) 2001, 2002 Fabrice Bellard |
| * |
| * Sony Wave64 muxer |
| * Copyright (c) 2012 Paul B Mahol |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| #include <string.h> |
| |
| #include "libavutil/dict.h" |
| #include "libavutil/common.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/opt.h" |
| |
| #include "avformat.h" |
| #include "avio.h" |
| #include "avio_internal.h" |
| #include "internal.h" |
| #include "riff.h" |
| |
| typedef struct WAVMuxContext { |
| const AVClass *class; |
| int64_t data; |
| int64_t fact_pos; |
| int64_t minpts; |
| int64_t maxpts; |
| int last_duration; |
| int write_bext; |
| } WAVMuxContext; |
| |
| #if CONFIG_WAV_MUXER |
| static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen) |
| { |
| AVDictionaryEntry *tag; |
| int len = 0; |
| |
| if (tag = av_dict_get(s->metadata, key, NULL, 0)) { |
| len = strlen(tag->value); |
| len = FFMIN(len, maxlen); |
| avio_write(s->pb, tag->value, len); |
| } |
| |
| ffio_fill(s->pb, 0, maxlen - len); |
| } |
| |
| static void bwf_write_bext_chunk(AVFormatContext *s) |
| { |
| AVDictionaryEntry *tmp_tag; |
| uint64_t time_reference = 0; |
| int64_t bext = ff_start_tag(s->pb, "bext"); |
| |
| bwf_write_bext_string(s, "description", 256); |
| bwf_write_bext_string(s, "originator", 32); |
| bwf_write_bext_string(s, "originator_reference", 32); |
| bwf_write_bext_string(s, "origination_date", 10); |
| bwf_write_bext_string(s, "origination_time", 8); |
| |
| if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0)) |
| time_reference = strtoll(tmp_tag->value, NULL, 10); |
| avio_wl64(s->pb, time_reference); |
| avio_wl16(s->pb, 1); // set version to 1 |
| |
| if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) { |
| unsigned char umidpart_str[17] = {0}; |
| int i; |
| uint64_t umidpart; |
| int len = strlen(tmp_tag->value+2); |
| |
| for (i = 0; i < len/16; i++) { |
| memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16); |
| umidpart = strtoll(umidpart_str, NULL, 16); |
| avio_wb64(s->pb, umidpart); |
| } |
| ffio_fill(s->pb, 0, 64 - i*8); |
| } else |
| ffio_fill(s->pb, 0, 64); // zero UMID |
| |
| ffio_fill(s->pb, 0, 190); // Reserved |
| |
| if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0)) |
| avio_put_str(s->pb, tmp_tag->value); |
| |
| ff_end_tag(s->pb, bext); |
| } |
| |
| static int wav_write_header(AVFormatContext *s) |
| { |
| WAVMuxContext *wav = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int64_t fmt; |
| |
| ffio_wfourcc(pb, "RIFF"); |
| avio_wl32(pb, 0); /* file length */ |
| ffio_wfourcc(pb, "WAVE"); |
| |
| /* format header */ |
| fmt = ff_start_tag(pb, "fmt "); |
| if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) { |
| av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n", |
| s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); |
| return -1; |
| } |
| ff_end_tag(pb, fmt); |
| |
| if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */ |
| && s->pb->seekable) { |
| wav->fact_pos = ff_start_tag(pb, "fact"); |
| avio_wl32(pb, 0); |
| ff_end_tag(pb, wav->fact_pos); |
| } |
| |
| if (wav->write_bext) |
| bwf_write_bext_chunk(s); |
| |
| avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate); |
| wav->maxpts = wav->last_duration = 0; |
| wav->minpts = INT64_MAX; |
| |
| /* info header */ |
| ff_riff_write_info(s); |
| |
| /* data header */ |
| wav->data = ff_start_tag(pb, "data"); |
| |
| avio_flush(pb); |
| |
| return 0; |
| } |
| |
| static int wav_write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| AVIOContext *pb = s->pb; |
| WAVMuxContext *wav = s->priv_data; |
| avio_write(pb, pkt->data, pkt->size); |
| if(pkt->pts != AV_NOPTS_VALUE) { |
| wav->minpts = FFMIN(wav->minpts, pkt->pts); |
| wav->maxpts = FFMAX(wav->maxpts, pkt->pts); |
| wav->last_duration = pkt->duration; |
| } else |
| av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n"); |
| return 0; |
| } |
| |
| static int wav_write_trailer(AVFormatContext *s) |
| { |
| AVIOContext *pb = s->pb; |
| WAVMuxContext *wav = s->priv_data; |
| int64_t file_size; |
| |
| avio_flush(pb); |
| |
| if (s->pb->seekable) { |
| ff_end_tag(pb, wav->data); |
| |
| /* update file size */ |
| file_size = avio_tell(pb); |
| avio_seek(pb, 4, SEEK_SET); |
| avio_wl32(pb, (uint32_t)(file_size - 8)); |
| avio_seek(pb, file_size, SEEK_SET); |
| |
| avio_flush(pb); |
| |
| if(s->streams[0]->codec->codec_tag != 0x01) { |
| /* Update num_samps in fact chunk */ |
| int number_of_samples; |
| number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration, |
| s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num, |
| s->streams[0]->time_base.den); |
| avio_seek(pb, wav->fact_pos, SEEK_SET); |
| avio_wl32(pb, number_of_samples); |
| avio_seek(pb, file_size, SEEK_SET); |
| avio_flush(pb); |
| } |
| } |
| return 0; |
| } |
| |
| #define OFFSET(x) offsetof(WAVMuxContext, x) |
| #define ENC AV_OPT_FLAG_ENCODING_PARAM |
| static const AVOption options[] = { |
| { "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, ENC }, |
| { NULL }, |
| }; |
| |
| static const AVClass wav_muxer_class = { |
| .class_name = "WAV muxer", |
| .item_name = av_default_item_name, |
| .option = options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| |
| AVOutputFormat ff_wav_muxer = { |
| .name = "wav", |
| .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"), |
| .mime_type = "audio/x-wav", |
| .extensions = "wav", |
| .priv_data_size = sizeof(WAVMuxContext), |
| .audio_codec = AV_CODEC_ID_PCM_S16LE, |
| .video_codec = AV_CODEC_ID_NONE, |
| .write_header = wav_write_header, |
| .write_packet = wav_write_packet, |
| .write_trailer = wav_write_trailer, |
| .flags = AVFMT_TS_NONSTRICT, |
| .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, |
| .priv_class = &wav_muxer_class, |
| }; |
| #endif /* CONFIG_WAV_MUXER */ |
| |
| #if CONFIG_W64_MUXER |
| #include "w64.h" |
| |
| static void start_guid(AVIOContext *pb, const uint8_t *guid, int64_t *pos) |
| { |
| *pos = avio_tell(pb); |
| |
| avio_write(pb, guid, 16); |
| avio_wl64(pb, INT64_MAX); |
| } |
| |
| static void end_guid(AVIOContext *pb, int64_t start) |
| { |
| int64_t end, pos = avio_tell(pb); |
| |
| end = FFALIGN(pos, 8); |
| ffio_fill(pb, 0, end - pos); |
| avio_seek(pb, start + 16, SEEK_SET); |
| avio_wl64(pb, end - start); |
| avio_seek(pb, end, SEEK_SET); |
| } |
| |
| static int w64_write_header(AVFormatContext *s) |
| { |
| WAVMuxContext *wav = s->priv_data; |
| AVIOContext *pb = s->pb; |
| int64_t start; |
| int ret; |
| |
| avio_write(pb, ff_w64_guid_riff, sizeof(ff_w64_guid_riff)); |
| avio_wl64(pb, -1); |
| avio_write(pb, ff_w64_guid_wave, sizeof(ff_w64_guid_wave)); |
| start_guid(pb, ff_w64_guid_fmt, &start); |
| if ((ret = ff_put_wav_header(pb, s->streams[0]->codec)) < 0) { |
| av_log(s, AV_LOG_ERROR, "%s codec not supported\n", |
| s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE"); |
| return ret; |
| } |
| end_guid(pb, start); |
| start_guid(pb, ff_w64_guid_data, &wav->data); |
| |
| return 0; |
| } |
| |
| static int w64_write_trailer(AVFormatContext *s) |
| { |
| AVIOContext *pb = s->pb; |
| WAVMuxContext *wav = s->priv_data; |
| int64_t file_size; |
| |
| if (pb->seekable) { |
| end_guid(pb, wav->data); |
| |
| file_size = avio_tell(pb); |
| avio_seek(pb, 16, SEEK_SET); |
| avio_wl64(pb, file_size); |
| avio_seek(pb, file_size, SEEK_SET); |
| |
| avio_flush(pb); |
| } |
| |
| return 0; |
| } |
| |
| AVOutputFormat ff_w64_muxer = { |
| .name = "w64", |
| .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), |
| .extensions = "w64", |
| .priv_data_size = sizeof(WAVMuxContext), |
| .audio_codec = AV_CODEC_ID_PCM_S16LE, |
| .video_codec = AV_CODEC_ID_NONE, |
| .write_header = w64_write_header, |
| .write_packet = wav_write_packet, |
| .write_trailer = w64_write_trailer, |
| .flags = AVFMT_TS_NONSTRICT, |
| .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, |
| }; |
| #endif /* CONFIG_W64_MUXER */ |