| /* |
| * 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 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 "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; |
| int64_t smv_data_ofs; |
| int smv_block_size; |
| int smv_frames_per_jpeg; |
| int smv_block; |
| int smv_last_stream; |
| int smv_eof; |
| int audio_eof; |
| int ignore_length; |
| } 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; |
| |
| /* 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, { 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 format"), |
| .mime_type = "audio/x-wav", |
| .extensions = "wav", |
| .priv_data_size = sizeof(WAVContext), |
| .audio_codec = CODEC_ID_PCM_S16LE, |
| .video_codec = CODEC_ID_NONE, |
| .write_header = wav_write_header, |
| .write_packet = wav_write_packet, |
| .write_trailer = wav_write_trailer, |
| .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); |
| } |
| |
| /* RIFF chunks are always on a even offset. */ |
| static int64_t wav_seek_tag(AVIOContext *s, int64_t offset, int whence) |
| { |
| return avio_seek(s, offset + (offset & 1), whence); |
| } |
| |
| /* 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 (url_feof(pb)) |
| return -1; |
| size = next_tag(pb, &tag); |
| if (tag == tag1) |
| break; |
| wav_seek_tag(pb, size, SEEK_CUR); |
| } |
| 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 |
| "%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, |
| AVFormatParameters *ap) |
| { |
| 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; |
| |
| wav->smv_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 < 24) |
| 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 - 24); /* skip rest of ds64 chunk */ |
| |
| } |
| |
| for (;;) { |
| AVStream *vst; |
| size = next_tag(pb, &tag); |
| next_tag_ofs = avio_tell(pb) + size; |
| |
| if (url_feof(pb)) |
| 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('S','M','V','0'): |
| // SMV file, a wav file with video appended. |
| if (size != MKTAG('0','2','0','0')) { |
| av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n"); |
| goto break_loop; |
| } |
| av_log(s, AV_LOG_DEBUG, "Found SMV data\n"); |
| vst = avformat_new_stream(s, NULL); |
| if (!vst) |
| return AVERROR(ENOMEM); |
| avio_r8(pb); |
| vst->id = 1; |
| vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| vst->codec->codec_id = CODEC_ID_MJPEG; |
| vst->codec->width = avio_rl24(pb); |
| vst->codec->height = avio_rl24(pb); |
| size = avio_rl24(pb); |
| wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3; |
| avio_rl24(pb); |
| wav->smv_block_size = avio_rl24(pb); |
| avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb)); |
| vst->duration = avio_rl24(pb); |
| avio_rl24(pb); |
| avio_rl24(pb); |
| wav->smv_frames_per_jpeg = avio_rl24(pb); |
| goto break_loop; |
| 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'): |
| ff_read_riff_info(s, size - 4); |
| } |
| 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)) || |
| wav_seek_tag(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 (!url_feof(pb)) { |
| 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; |
| |
| if (wav->smv_data_ofs > 0) { |
| int64_t audio_dts, video_dts; |
| smv_retry: |
| audio_dts = s->streams[0]->cur_dts; |
| video_dts = s->streams[1]->cur_dts; |
| if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) { |
| audio_dts = av_rescale_q(audio_dts, s->streams[0]->time_base, AV_TIME_BASE_Q); |
| video_dts = av_rescale_q(video_dts, s->streams[1]->time_base, AV_TIME_BASE_Q); |
| wav->smv_last_stream = video_dts >= audio_dts; |
| } |
| wav->smv_last_stream = !wav->smv_last_stream; |
| wav->smv_last_stream |= wav->audio_eof; |
| wav->smv_last_stream &= !wav->smv_eof; |
| if (wav->smv_last_stream) { |
| uint64_t old_pos = avio_tell(s->pb); |
| uint64_t new_pos = wav->smv_data_ofs + |
| wav->smv_block * wav->smv_block_size; |
| if (avio_seek(s->pb, new_pos, SEEK_SET) < 0) { |
| ret = AVERROR_EOF; |
| goto smv_out; |
| } |
| size = avio_rl24(s->pb); |
| ret = av_get_packet(s->pb, pkt, size); |
| if (ret < 0) |
| goto smv_out; |
| pkt->pos -= 3; |
| pkt->pts = wav->smv_block * wav->smv_frames_per_jpeg; |
| wav->smv_block++; |
| pkt->stream_index = 1; |
| smv_out: |
| avio_seek(s->pb, old_pos, SEEK_SET); |
| if (ret == AVERROR_EOF) { |
| wav->smv_eof = 1; |
| goto smv_retry; |
| } |
| return ret; |
| } |
| } |
| |
| st = s->streams[0]; |
| |
| left = wav->data_end - avio_tell(s->pb); |
| if (wav->ignore_length) |
| left= INT_MAX; |
| 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) { |
| wav->audio_eof = 1; |
| if (wav->smv_data_ofs > 0 && !wav->smv_eof) |
| goto smv_retry; |
| 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) |
| { |
| WAVContext *wav = s->priv_data; |
| AVStream *st; |
| wav->smv_eof = 0; |
| wav->audio_eof = 0; |
| if (wav->smv_data_ofs > 0) { |
| int64_t smv_timestamp = timestamp; |
| if (stream_index == 0) |
| smv_timestamp = av_rescale_q(timestamp, s->streams[0]->time_base, s->streams[1]->time_base); |
| else |
| timestamp = av_rescale_q(smv_timestamp, s->streams[1]->time_base, s->streams[0]->time_base); |
| wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg; |
| } |
| |
| st = s->streams[0]; |
| switch (st->codec->codec_id) { |
| case CODEC_ID_MP2: |
| case CODEC_ID_MP3: |
| case CODEC_ID_AC3: |
| case CODEC_ID_DTS: |
| /* use generic seeking with dynamically generated indexes */ |
| return -1; |
| default: |
| break; |
| } |
| return pcm_read_seek(s, stream_index, timestamp, flags); |
| } |
| |
| #define OFFSET(x) offsetof(WAVContext, x) |
| #define DEC AV_OPT_FLAG_DECODING_PARAM |
| static const AVOption demux_options[] = { |
| { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_INT, { 0 }, 0, 1, DEC }, |
| { NULL }, |
| }; |
| |
| static const AVClass wav_demuxer_class = { |
| .class_name = "WAV demuxer", |
| .item_name = av_default_item_name, |
| .option = demux_options, |
| .version = LIBAVUTIL_VERSION_INT, |
| }; |
| AVInputFormat ff_wav_demuxer = { |
| .name = "wav", |
| .long_name = NULL_IF_CONFIG_SMALL("WAV format"), |
| .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}, |
| .priv_class = &wav_demuxer_class, |
| }; |
| #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, AVFormatParameters *ap) |
| { |
| 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 format"), |
| .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 */ |
