From 31c54711cc3f1484af101d629bbb805820d37ad1 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Tue, 16 Oct 2012 10:23:29 +0200 Subject: lavf: split wav muxer and demuxer into separate files. --- libavformat/wav.c | 691 ------------------------------------------------------ 1 file changed, 691 deletions(-) delete mode 100644 libavformat/wav.c (limited to 'libavformat/wav.c') diff --git a/libavformat/wav.c b/libavformat/wav.c deleted file mode 100644 index ac78f4bee2..0000000000 --- a/libavformat/wav.c +++ /dev/null @@ -1,691 +0,0 @@ -/* - * WAV muxer and demuxer - * Copyright (c) 2001, 2002 Fabrice Bellard - * - * Sony Wave64 demuxer - * RF64 demuxer - * Copyright (c) 2009 Daniel Verkamp - * - * This file is part of Libav. - * - * Libav 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. - * - * Libav 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 Libav; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavutil/avassert.h" -#include "libavutil/dict.h" -#include "libavutil/log.h" -#include "libavutil/mathematics.h" -#include "libavutil/opt.h" -#include "avformat.h" -#include "internal.h" -#include "avio_internal.h" -#include "pcm.h" -#include "riff.h" -#include "avio.h" -#include "metadata.h" - -typedef struct { - const AVClass *class; - int64_t data; - int64_t data_end; - int64_t minpts; - int64_t maxpts; - int last_duration; - int w64; - int write_bext; -} WAVContext; - -#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) -{ - WAVContext *wav = s->priv_data; - AVIOContext *pb = s->pb; - int64_t fmt, fact; - - 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) { - fact = ff_start_tag(pb, "fact"); - avio_wl32(pb, 0); - ff_end_tag(pb, fact); - } - - 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; - WAVContext *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; - WAVContext *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->data-12, SEEK_SET); - avio_wl32(pb, number_of_samples); - avio_seek(pb, file_size, SEEK_SET); - avio_flush(pb); - } - } - return 0; -} - -#define OFFSET(x) offsetof(WAVContext, 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(WAVContext), - .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_WAV_DEMUXER - -static int64_t next_tag(AVIOContext *pb, uint32_t *tag) -{ - *tag = avio_rl32(pb); - return avio_rl32(pb); -} - -/* return the size of the found tag */ -static int64_t find_tag(AVIOContext *pb, uint32_t tag1) -{ - unsigned int tag; - int64_t size; - - for (;;) { - if (pb->eof_reached) - return -1; - size = next_tag(pb, &tag); - if (tag == tag1) - break; - avio_skip(pb, size); - } - return size; -} - -static int wav_probe(AVProbeData *p) -{ - /* check file header */ - if (p->buf_size <= 32) - return 0; - if (!memcmp(p->buf + 8, "WAVE", 4)) { - if (!memcmp(p->buf, "RIFF", 4)) - /* - Since ACT demuxer has standard WAV header at top of it's own, - returning score is decreased to avoid probe conflict - between ACT and WAV. - */ - return AVPROBE_SCORE_MAX - 1; - else if (!memcmp(p->buf, "RF64", 4) && - !memcmp(p->buf + 12, "ds64", 4)) - return AVPROBE_SCORE_MAX; - } - return 0; -} - -static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st) -{ - AVIOContext *pb = s->pb; - int ret; - - /* parse fmt header */ - *st = avformat_new_stream(s, NULL); - if (!*st) - return AVERROR(ENOMEM); - - ret = ff_get_wav_header(pb, (*st)->codec, size); - if (ret < 0) - return ret; - (*st)->need_parsing = AVSTREAM_PARSE_FULL; - - avpriv_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate); - - return 0; -} - -static inline int wav_parse_bext_string(AVFormatContext *s, const char *key, - int length) -{ - char temp[257]; - int ret; - - av_assert0(length <= sizeof(temp)); - if ((ret = avio_read(s->pb, temp, length)) < 0) - return ret; - - temp[length] = 0; - - if (strlen(temp)) - return av_dict_set(&s->metadata, key, temp, 0); - - return 0; -} - -static int wav_parse_bext_tag(AVFormatContext *s, int64_t size) -{ - char temp[131], *coding_history; - int ret, x; - uint64_t time_reference; - int64_t umid_parts[8], umid_mask = 0; - - if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 || - (ret = wav_parse_bext_string(s, "originator", 32)) < 0 || - (ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 || - (ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 || - (ret = wav_parse_bext_string(s, "origination_time", 8)) < 0) - return ret; - - time_reference = avio_rl64(s->pb); - snprintf(temp, sizeof(temp), "%"PRIu64, time_reference); - if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0) - return ret; - - /* check if version is >= 1, in which case an UMID may be present */ - if (avio_rl16(s->pb) >= 1) { - for (x = 0; x < 8; x++) - umid_mask |= umid_parts[x] = avio_rb64(s->pb); - - if (umid_mask) { - /* the string formatting below is per SMPTE 330M-2004 Annex C */ - if (umid_parts[4] == 0 && umid_parts[5] == 0 && umid_parts[6] == 0 && umid_parts[7] == 0) { - /* basic UMID */ - snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64, - umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3]); - } else { - /* extended UMID */ - snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64 - "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64, - umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3], - umid_parts[4], umid_parts[5], umid_parts[6], umid_parts[7]); - } - - if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0) - return ret; - } - - avio_skip(s->pb, 190); - } else - avio_skip(s->pb, 254); - - if (size > 602) { - /* CodingHistory present */ - size -= 602; - - if (!(coding_history = av_malloc(size+1))) - return AVERROR(ENOMEM); - - if ((ret = avio_read(s->pb, coding_history, size)) < 0) - return ret; - - coding_history[size] = 0; - if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history, - AV_DICT_DONT_STRDUP_VAL)) < 0) - return ret; - } - - return 0; -} - -static const AVMetadataConv wav_metadata_conv[] = { - {"description", "comment" }, - {"originator", "encoded_by" }, - {"origination_date", "date" }, - {"origination_time", "creation_time"}, - {0}, -}; - -/* wav input */ -static int wav_read_header(AVFormatContext *s) -{ - int64_t size, av_uninit(data_size); - int64_t sample_count=0; - int rf64; - uint32_t tag, list_type; - AVIOContext *pb = s->pb; - AVStream *st = NULL; - WAVContext *wav = s->priv_data; - int ret, got_fmt = 0; - int64_t next_tag_ofs, data_ofs = -1; - - /* check RIFF header */ - tag = avio_rl32(pb); - - rf64 = tag == MKTAG('R', 'F', '6', '4'); - if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F')) - return -1; - avio_rl32(pb); /* file size */ - tag = avio_rl32(pb); - if (tag != MKTAG('W', 'A', 'V', 'E')) - return -1; - - if (rf64) { - if (avio_rl32(pb) != MKTAG('d', 's', '6', '4')) - return -1; - size = avio_rl32(pb); - if (size < 16) - return -1; - avio_rl64(pb); /* RIFF size */ - data_size = avio_rl64(pb); - sample_count = avio_rl64(pb); - if (data_size < 0 || sample_count < 0) { - av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in " - "ds64: data_size = %"PRId64", sample_count = %"PRId64"\n", - data_size, sample_count); - return AVERROR_INVALIDDATA; - } - avio_skip(pb, size - 16); /* skip rest of ds64 chunk */ - } - - for (;;) { - size = next_tag(pb, &tag); - next_tag_ofs = avio_tell(pb) + size; - - if (pb->eof_reached) - break; - - switch (tag) { - case MKTAG('f', 'm', 't', ' '): - /* only parse the first 'fmt ' tag found */ - if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st) < 0)) { - return ret; - } else if (got_fmt) - av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n"); - - got_fmt = 1; - break; - case MKTAG('d', 'a', 't', 'a'): - if (!got_fmt) { - av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'data' tag\n"); - return AVERROR_INVALIDDATA; - } - - if (rf64) { - next_tag_ofs = wav->data_end = avio_tell(pb) + data_size; - } else { - data_size = size; - next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX; - } - - data_ofs = avio_tell(pb); - - /* don't look for footer metadata if we can't seek or if we don't - * know where the data tag ends - */ - if (!pb->seekable || (!rf64 && !size)) - goto break_loop; - break; - case MKTAG('f','a','c','t'): - if (!sample_count) - sample_count = avio_rl32(pb); - break; - case MKTAG('b','e','x','t'): - if ((ret = wav_parse_bext_tag(s, size)) < 0) - return ret; - break; - case MKTAG('L', 'I', 'S', 'T'): - list_type = avio_rl32(pb); - if (size <= 4) { - av_log(s, AV_LOG_ERROR, "too short LIST"); - return AVERROR_INVALIDDATA; - } - switch (list_type) { - case MKTAG('I', 'N', 'F', 'O'): - if ((ret = ff_read_riff_info(s, size - 4)) < 0) - return ret; - } - break; - } - - /* seek to next tag unless we know that we'll run into EOF */ - if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) || - avio_seek(pb, next_tag_ofs, SEEK_SET) < 0) { - break; - } - } -break_loop: - if (data_ofs < 0) { - av_log(s, AV_LOG_ERROR, "no 'data' tag found\n"); - return AVERROR_INVALIDDATA; - } - - avio_seek(pb, data_ofs, SEEK_SET); - - if (!sample_count && st->codec->channels && av_get_bits_per_sample(st->codec->codec_id)) - sample_count = (data_size<<3) / (st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id)); - if (sample_count) - st->duration = sample_count; - - ff_metadata_conv_ctx(s, NULL, wav_metadata_conv); - ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv); - - return 0; -} - -/** Find chunk with w64 GUID by skipping over other chunks - * @return the size of the found chunk - */ -static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16]) -{ - uint8_t guid[16]; - int64_t size; - - while (!pb->eof_reached) { - avio_read(pb, guid, 16); - size = avio_rl64(pb); - if (size <= 24) - return -1; - if (!memcmp(guid, guid1, 16)) - return size; - avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24); - } - return -1; -} - -static const uint8_t guid_data[16] = { 'd', 'a', 't', 'a', - 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A }; - -#define MAX_SIZE 4096 - -static int wav_read_packet(AVFormatContext *s, - AVPacket *pkt) -{ - int ret, size; - int64_t left; - AVStream *st; - WAVContext *wav = s->priv_data; - - st = s->streams[0]; - - left = wav->data_end - avio_tell(s->pb); - if (left <= 0){ - if (CONFIG_W64_DEMUXER && wav->w64) - left = find_guid(s->pb, guid_data) - 24; - else - left = find_tag(s->pb, MKTAG('d', 'a', 't', 'a')); - if (left < 0) - return AVERROR_EOF; - wav->data_end= avio_tell(s->pb) + left; - } - - size = MAX_SIZE; - if (st->codec->block_align > 1) { - if (size < st->codec->block_align) - size = st->codec->block_align; - size = (size / st->codec->block_align) * st->codec->block_align; - } - size = FFMIN(size, left); - ret = av_get_packet(s->pb, pkt, size); - if (ret < 0) - return ret; - pkt->stream_index = 0; - - return ret; -} - -static int wav_read_seek(AVFormatContext *s, - int stream_index, int64_t timestamp, int flags) -{ - AVStream *st; - - st = s->streams[0]; - switch (st->codec->codec_id) { - case AV_CODEC_ID_MP2: - case AV_CODEC_ID_MP3: - case AV_CODEC_ID_AC3: - case AV_CODEC_ID_DTS: - /* use generic seeking with dynamically generated indexes */ - return -1; - default: - break; - } - return ff_pcm_read_seek(s, stream_index, timestamp, flags); -} - -AVInputFormat ff_wav_demuxer = { - .name = "wav", - .long_name = NULL_IF_CONFIG_SMALL("WAV / WAVE (Waveform Audio)"), - .priv_data_size = sizeof(WAVContext), - .read_probe = wav_probe, - .read_header = wav_read_header, - .read_packet = wav_read_packet, - .read_seek = wav_read_seek, - .flags = AVFMT_GENERIC_INDEX, - .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, -}; -#endif /* CONFIG_WAV_DEMUXER */ - - -#if CONFIG_W64_DEMUXER -static const uint8_t guid_riff[16] = { 'r', 'i', 'f', 'f', - 0x2E, 0x91, 0xCF, 0x11, 0xA5, 0xD6, 0x28, 0xDB, 0x04, 0xC1, 0x00, 0x00 }; - -static const uint8_t guid_wave[16] = { 'w', 'a', 'v', 'e', - 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A }; - -static const uint8_t guid_fmt [16] = { 'f', 'm', 't', ' ', - 0xF3, 0xAC, 0xD3, 0x11, 0x8C, 0xD1, 0x00, 0xC0, 0x4F, 0x8E, 0xDB, 0x8A }; - -static int w64_probe(AVProbeData *p) -{ - if (p->buf_size <= 40) - return 0; - if (!memcmp(p->buf, guid_riff, 16) && - !memcmp(p->buf + 24, guid_wave, 16)) - return AVPROBE_SCORE_MAX; - else - return 0; -} - -static int w64_read_header(AVFormatContext *s) -{ - int64_t size; - AVIOContext *pb = s->pb; - WAVContext *wav = s->priv_data; - AVStream *st; - uint8_t guid[16]; - int ret; - - avio_read(pb, guid, 16); - if (memcmp(guid, guid_riff, 16)) - return -1; - - if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8) /* riff + wave + fmt + sizes */ - return -1; - - avio_read(pb, guid, 16); - if (memcmp(guid, guid_wave, 16)) { - av_log(s, AV_LOG_ERROR, "could not find wave guid\n"); - return -1; - } - - size = find_guid(pb, guid_fmt); - if (size < 0) { - av_log(s, AV_LOG_ERROR, "could not find fmt guid\n"); - return -1; - } - - st = avformat_new_stream(s, NULL); - if (!st) - return AVERROR(ENOMEM); - - /* subtract chunk header size - normal wav file doesn't count it */ - ret = ff_get_wav_header(pb, st->codec, size - 24); - if (ret < 0) - return ret; - avio_skip(pb, FFALIGN(size, INT64_C(8)) - size); - - st->need_parsing = AVSTREAM_PARSE_FULL; - - avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate); - - size = find_guid(pb, guid_data); - if (size < 0) { - av_log(s, AV_LOG_ERROR, "could not find data guid\n"); - return -1; - } - wav->data_end = avio_tell(pb) + size - 24; - wav->w64 = 1; - - return 0; -} - -AVInputFormat ff_w64_demuxer = { - .name = "w64", - .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), - .priv_data_size = sizeof(WAVContext), - .read_probe = w64_probe, - .read_header = w64_read_header, - .read_packet = wav_read_packet, - .read_seek = wav_read_seek, - .flags = AVFMT_GENERIC_INDEX, - .codec_tag = (const AVCodecTag* const []){ ff_codec_wav_tags, 0 }, -}; -#endif /* CONFIG_W64_DEMUXER */ -- cgit v1.2.3