| /* |
| * WAV 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 <stdint.h> |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/dict.h" |
| #include "libavutil/intreadwrite.h" |
| #include "libavutil/log.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/opt.h" |
| #include "avformat.h" |
| #include "avio.h" |
| #include "avio_internal.h" |
| #include "id3v2.h" |
| #include "internal.h" |
| #include "metadata.h" |
| #include "pcm.h" |
| #include "riff.h" |
| #include "w64.h" |
| #include "spdif.h" |
| |
| typedef struct WAVDemuxContext { |
| const AVClass *class; |
| int64_t data_end; |
| int w64; |
| 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; |
| int spdif; |
| int smv_cur_pt; |
| int smv_given_first; |
| int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended |
| int rifx; // RIFX: integer byte order for parameters is big endian |
| } WAVDemuxContext; |
| |
| static void set_spdif(AVFormatContext *s, WAVDemuxContext *wav) |
| { |
| if (CONFIG_SPDIF_DEMUXER && s->streams[0]->codecpar->codec_tag == 1) { |
| enum AVCodecID codec; |
| int len = 1<<16; |
| int ret = ffio_ensure_seekback(s->pb, len); |
| |
| if (ret >= 0) { |
| uint8_t *buf = av_malloc(len); |
| if (!buf) { |
| ret = AVERROR(ENOMEM); |
| } else { |
| int64_t pos = avio_tell(s->pb); |
| len = ret = avio_read(s->pb, buf, len); |
| if (len >= 0) { |
| ret = ff_spdif_probe(buf, len, &codec); |
| if (ret > AVPROBE_SCORE_EXTENSION) { |
| s->streams[0]->codecpar->codec_id = codec; |
| wav->spdif = 1; |
| } |
| } |
| avio_seek(s->pb, pos, SEEK_SET); |
| av_free(buf); |
| } |
| } |
| |
| if (ret < 0) |
| av_log(s, AV_LOG_WARNING, "Cannot check for SPDIF\n"); |
| } |
| } |
| |
| #if CONFIG_WAV_DEMUXER |
| |
| static int64_t next_tag(AVIOContext *pb, uint32_t *tag, int big_endian) |
| { |
| *tag = avio_rl32(pb); |
| if (!big_endian) { |
| return avio_rl32(pb); |
| } else { |
| return avio_rb32(pb); |
| } |
| } |
| |
| /* RIFF chunks are always at even offsets relative to where they start. */ |
| static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence) |
| { |
| offset += offset < INT64_MAX && offset + wav->unaligned & 1; |
| |
| return avio_seek(s, offset, whence); |
| } |
| |
| /* return the size of the found tag */ |
| static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1) |
| { |
| unsigned int tag; |
| int64_t size; |
| |
| for (;;) { |
| if (avio_feof(pb)) |
| return AVERROR_EOF; |
| size = next_tag(pb, &tag, wav->rifx); |
| if (tag == tag1) |
| break; |
| wav_seek_tag(wav, pb, size, SEEK_CUR); |
| } |
| return size; |
| } |
| |
| static int wav_probe(const 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) || !memcmp(p->buf, "RIFX", 4)) |
| /* Since the ACT demuxer has a standard WAV header at the top of |
| * its own, the returned score is decreased to avoid a 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 void handle_stream_probing(AVStream *st) |
| { |
| if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE) { |
| st->request_probe = AVPROBE_SCORE_EXTENSION; |
| st->probe_packets = FFMIN(st->probe_packets, 32); |
| } |
| } |
| |
| static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st) |
| { |
| AVIOContext *pb = s->pb; |
| WAVDemuxContext *wav = s->priv_data; |
| int ret; |
| |
| /* parse fmt header */ |
| *st = avformat_new_stream(s, NULL); |
| if (!*st) |
| return AVERROR(ENOMEM); |
| |
| ret = ff_get_wav_header(s, pb, (*st)->codecpar, size, wav->rifx); |
| if (ret < 0) |
| return ret; |
| handle_stream_probing(*st); |
| |
| (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
| |
| avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate); |
| |
| return 0; |
| } |
| |
| static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st) |
| { |
| AVIOContext *pb = s->pb; |
| int version, num_streams, i, channels = 0; |
| |
| if (size < 36) |
| return AVERROR_INVALIDDATA; |
| |
| *st = avformat_new_stream(s, NULL); |
| if (!*st) |
| return AVERROR(ENOMEM); |
| |
| (*st)->codecpar->codec_type = AVMEDIA_TYPE_AUDIO; |
| (*st)->codecpar->codec_id = AV_CODEC_ID_XMA2; |
| (*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
| |
| version = avio_r8(pb); |
| if (version != 3 && version != 4) |
| return AVERROR_INVALIDDATA; |
| num_streams = avio_r8(pb); |
| if (size != (32 + ((version==3)?0:8) + 4*num_streams)) |
| return AVERROR_INVALIDDATA; |
| avio_skip(pb, 10); |
| (*st)->codecpar->sample_rate = avio_rb32(pb); |
| if (version == 4) |
| avio_skip(pb, 8); |
| avio_skip(pb, 4); |
| (*st)->duration = avio_rb32(pb); |
| avio_skip(pb, 8); |
| |
| for (i = 0; i < num_streams; i++) { |
| channels += avio_r8(pb); |
| avio_skip(pb, 3); |
| } |
| (*st)->codecpar->channels = channels; |
| |
| if ((*st)->codecpar->channels <= 0 || (*st)->codecpar->sample_rate <= 0) |
| return AVERROR_INVALIDDATA; |
| |
| avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate); |
| |
| avio_seek(pb, -size, SEEK_CUR); |
| av_freep(&(*st)->codecpar->extradata); |
| if (ff_get_extradata(s, (*st)->codecpar, pb, size) < 0) |
| return AVERROR(ENOMEM); |
| |
| 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)) != length) |
| return ret < 0 ? ret : AVERROR_INVALIDDATA; |
| |
| 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)) != size) { |
| av_free(coding_history); |
| return ret < 0 ? ret : AVERROR_INVALIDDATA; |
| } |
| |
| 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 = 0; |
| uint32_t tag; |
| AVIOContext *pb = s->pb; |
| AVStream *st = NULL; |
| WAVDemuxContext *wav = s->priv_data; |
| int ret, got_fmt = 0, got_xma2 = 0; |
| int64_t next_tag_ofs, data_ofs = -1; |
| |
| wav->unaligned = avio_tell(s->pb) & 1; |
| |
| wav->smv_data_ofs = -1; |
| |
| /* read chunk ID */ |
| tag = avio_rl32(pb); |
| switch (tag) { |
| case MKTAG('R', 'I', 'F', 'F'): |
| break; |
| case MKTAG('R', 'I', 'F', 'X'): |
| wav->rifx = 1; |
| break; |
| case MKTAG('R', 'F', '6', '4'): |
| rf64 = 1; |
| break; |
| default: |
| av_log(s, AV_LOG_ERROR, "invalid start code %s in RIFF header\n", |
| av_fourcc2str(tag)); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| /* read chunk size */ |
| avio_rl32(pb); |
| |
| /* read format */ |
| if (avio_rl32(pb) != MKTAG('W', 'A', 'V', 'E')) { |
| av_log(s, AV_LOG_ERROR, "invalid format in RIFF header\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| if (rf64) { |
| if (avio_rl32(pb) != MKTAG('d', 's', '6', '4')) |
| return AVERROR_INVALIDDATA; |
| size = avio_rl32(pb); |
| if (size < 24) |
| return AVERROR_INVALIDDATA; |
| 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, wav->rifx); |
| next_tag_ofs = avio_tell(pb) + size; |
| |
| if (avio_feof(pb)) |
| break; |
| |
| switch (tag) { |
| case MKTAG('f', 'm', 't', ' '): |
| /* only parse the first 'fmt ' tag found */ |
| if (!got_xma2 && !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('X', 'M', 'A', '2'): |
| /* only parse the first 'XMA2' tag found */ |
| if (!got_fmt && !got_xma2 && (ret = wav_parse_xma2_tag(s, size, &st)) < 0) { |
| return ret; |
| } else if (got_xma2) |
| av_log(s, AV_LOG_WARNING, "found more than one 'XMA2' tag\n"); |
| |
| got_xma2 = 1; |
| break; |
| case MKTAG('d', 'a', 't', 'a'): |
| if (!(pb->seekable & AVIO_SEEKABLE_NORMAL) && !got_fmt && !got_xma2) { |
| 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 if (size != 0xFFFFFFFF) { |
| data_size = size; |
| next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX; |
| } else { |
| av_log(s, AV_LOG_WARNING, "Ignoring maximum wav data size, " |
| "file may be invalid\n"); |
| data_size = 0; |
| next_tag_ofs = wav->data_end = 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 & AVIO_SEEKABLE_NORMAL) || (!rf64 && !size)) |
| goto break_loop; |
| break; |
| case MKTAG('f', 'a', 'c', 't'): |
| if (!sample_count) |
| sample_count = (!wav->rifx ? avio_rl32(pb) : avio_rb32(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'): |
| if (!got_fmt) { |
| av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| // 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"); |
| wav->smv_given_first = 0; |
| vst = avformat_new_stream(s, NULL); |
| if (!vst) |
| return AVERROR(ENOMEM); |
| avio_r8(pb); |
| vst->id = 1; |
| vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
| vst->codecpar->codec_id = AV_CODEC_ID_SMVJPEG; |
| vst->codecpar->width = avio_rl24(pb); |
| vst->codecpar->height = avio_rl24(pb); |
| if (ff_alloc_extradata(vst->codecpar, 4)) { |
| av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n"); |
| return AVERROR(ENOMEM); |
| } |
| 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); |
| if (wav->smv_frames_per_jpeg > 65536) { |
| av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| AV_WL32(vst->codecpar->extradata, wav->smv_frames_per_jpeg); |
| wav->smv_cur_pt = 0; |
| goto break_loop; |
| case MKTAG('L', 'I', 'S', 'T'): |
| if (size < 4) { |
| av_log(s, AV_LOG_ERROR, "too short LIST tag\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| switch (avio_rl32(pb)) { |
| case MKTAG('I', 'N', 'F', 'O'): |
| ff_read_riff_info(s, size - 4); |
| } |
| break; |
| case MKTAG('I', 'D', '3', ' '): |
| case MKTAG('i', 'd', '3', ' '): { |
| ID3v2ExtraMeta *id3v2_extra_meta = NULL; |
| ff_id3v2_read_dict(pb, &s->internal->id3v2_meta, ID3v2_DEFAULT_MAGIC, &id3v2_extra_meta); |
| if (id3v2_extra_meta) { |
| ff_id3v2_parse_apic(s, &id3v2_extra_meta); |
| ff_id3v2_parse_chapters(s, &id3v2_extra_meta); |
| ff_id3v2_parse_priv(s, &id3v2_extra_meta); |
| } |
| ff_id3v2_free_extra_meta(&id3v2_extra_meta); |
| } |
| 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(wav, pb, next_tag_ofs, SEEK_SET) < 0) { |
| break; |
| } |
| } |
| |
| break_loop: |
| if (!got_fmt && !got_xma2) { |
| av_log(s, AV_LOG_ERROR, "no 'fmt ' or 'XMA2' tag found\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| 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 (data_size > (INT64_MAX>>3)) { |
| av_log(s, AV_LOG_WARNING, "Data size %"PRId64" is too large\n", data_size); |
| data_size = 0; |
| } |
| |
| if ( st->codecpar->bit_rate > 0 && data_size > 0 |
| && st->codecpar->sample_rate > 0 |
| && sample_count > 0 && st->codecpar->channels > 1 |
| && sample_count % st->codecpar->channels == 0) { |
| if (fabs(8.0 * data_size * st->codecpar->channels * st->codecpar->sample_rate / |
| sample_count /st->codecpar->bit_rate - 1.0) < 0.3) |
| sample_count /= st->codecpar->channels; |
| } |
| |
| if ( data_size > 0 && sample_count && st->codecpar->channels |
| && (data_size << 3) / sample_count / st->codecpar->channels > st->codecpar->bits_per_coded_sample + 1) { |
| av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count); |
| sample_count = 0; |
| } |
| |
| /* G.729 hack (for Ticket4577) |
| * FIXME: Come up with cleaner, more general solution */ |
| if (st->codecpar->codec_id == AV_CODEC_ID_G729 && sample_count && (data_size << 3) > sample_count) { |
| av_log(s, AV_LOG_WARNING, "ignoring wrong sample_count %"PRId64"\n", sample_count); |
| sample_count = 0; |
| } |
| |
| if (!sample_count || av_get_exact_bits_per_sample(st->codecpar->codec_id) > 0) |
| if ( st->codecpar->channels |
| && data_size |
| && av_get_bits_per_sample(st->codecpar->codec_id) |
| && wav->data_end <= avio_size(pb)) |
| sample_count = (data_size << 3) |
| / |
| (st->codecpar->channels * (uint64_t)av_get_bits_per_sample(st->codecpar->codec_id)); |
| |
| if (sample_count) |
| st->duration = sample_count; |
| |
| if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S32LE && |
| st->codecpar->block_align == st->codecpar->channels * 4 && |
| st->codecpar->bits_per_coded_sample == 32 && |
| st->codecpar->extradata_size == 2 && |
| AV_RL16(st->codecpar->extradata) == 1) { |
| st->codecpar->codec_id = AV_CODEC_ID_PCM_F16LE; |
| st->codecpar->bits_per_coded_sample = 16; |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE && |
| st->codecpar->block_align == st->codecpar->channels * 4 && |
| st->codecpar->bits_per_coded_sample == 24) { |
| st->codecpar->codec_id = AV_CODEC_ID_PCM_F24LE; |
| } else if (st->codecpar->codec_id == AV_CODEC_ID_XMA1 || |
| st->codecpar->codec_id == AV_CODEC_ID_XMA2) { |
| st->codecpar->block_align = 2048; |
| } |
| |
| ff_metadata_conv_ctx(s, NULL, wav_metadata_conv); |
| ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv); |
| |
| set_spdif(s, wav); |
| |
| 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 (!avio_feof(pb)) { |
| avio_read(pb, guid, 16); |
| size = avio_rl64(pb); |
| if (size <= 24) |
| return AVERROR_INVALIDDATA; |
| if (!memcmp(guid, guid1, 16)) |
| return size; |
| avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24); |
| } |
| return AVERROR_EOF; |
| } |
| |
| #define MAX_SIZE 4096 |
| |
| static int wav_read_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| int ret, size; |
| int64_t left; |
| AVStream *st; |
| WAVDemuxContext *wav = s->priv_data; |
| |
| if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1) |
| return ff_spdif_read_packet(s, pkt); |
| |
| if (wav->smv_data_ofs > 0) { |
| int64_t audio_dts, video_dts; |
| smv_retry: |
| audio_dts = (int32_t)s->streams[0]->cur_dts; |
| video_dts = (int32_t)s->streams[1]->cur_dts; |
| |
| if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) { |
| /*We always return a video frame first to get the pixel format first*/ |
| wav->smv_last_stream = wav->smv_given_first ? |
| av_compare_ts(video_dts, s->streams[1]->time_base, |
| audio_dts, s->streams[0]->time_base) > 0 : 0; |
| wav->smv_given_first = 1; |
| } |
| 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_cur_pt; |
| wav->smv_cur_pt++; |
| if (wav->smv_frames_per_jpeg > 0) |
| wav->smv_cur_pt %= wav->smv_frames_per_jpeg; |
| if (!wav->smv_cur_pt) |
| 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, ff_w64_guid_data) - 24; |
| else |
| left = find_tag(wav, 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->codecpar->block_align > 1) { |
| if (size < st->codecpar->block_align) |
| size = st->codecpar->block_align; |
| size = (size / st->codecpar->block_align) * st->codecpar->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) |
| { |
| WAVDemuxContext *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); |
| if (wav->smv_frames_per_jpeg > 0) { |
| wav->smv_block = smv_timestamp / wav->smv_frames_per_jpeg; |
| wav->smv_cur_pt = smv_timestamp % wav->smv_frames_per_jpeg; |
| } |
| } |
| |
| st = s->streams[0]; |
| switch (st->codecpar->codec_id) { |
| case AV_CODEC_ID_MP2: |
| case AV_CODEC_ID_MP3: |
| case AV_CODEC_ID_AC3: |
| case AV_CODEC_ID_DTS: |
| case AV_CODEC_ID_XMA2: |
| /* use generic seeking with dynamically generated indexes */ |
| return -1; |
| default: |
| break; |
| } |
| return ff_pcm_read_seek(s, stream_index, timestamp, flags); |
| } |
| |
| #define OFFSET(x) offsetof(WAVDemuxContext, x) |
| #define DEC AV_OPT_FLAG_DECODING_PARAM |
| static const AVOption demux_options[] = { |
| { "ignore_length", "Ignore length", OFFSET(ignore_length), AV_OPT_TYPE_BOOL, { .i64 = 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 / WAVE (Waveform Audio)"), |
| .priv_data_size = sizeof(WAVDemuxContext), |
| .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 int w64_probe(const AVProbeData *p) |
| { |
| if (p->buf_size <= 40) |
| return 0; |
| if (!memcmp(p->buf, ff_w64_guid_riff, 16) && |
| !memcmp(p->buf + 24, ff_w64_guid_wave, 16)) |
| return AVPROBE_SCORE_MAX; |
| else |
| return 0; |
| } |
| |
| static int w64_read_header(AVFormatContext *s) |
| { |
| int64_t size, data_ofs = 0; |
| AVIOContext *pb = s->pb; |
| WAVDemuxContext *wav = s->priv_data; |
| AVStream *st; |
| uint8_t guid[16]; |
| int ret; |
| |
| avio_read(pb, guid, 16); |
| if (memcmp(guid, ff_w64_guid_riff, 16)) |
| return AVERROR_INVALIDDATA; |
| |
| /* riff + wave + fmt + sizes */ |
| if (avio_rl64(pb) < 16 + 8 + 16 + 8 + 16 + 8) |
| return AVERROR_INVALIDDATA; |
| |
| avio_read(pb, guid, 16); |
| if (memcmp(guid, ff_w64_guid_wave, 16)) { |
| av_log(s, AV_LOG_ERROR, "could not find wave guid\n"); |
| return AVERROR_INVALIDDATA; |
| } |
| |
| wav->w64 = 1; |
| |
| st = avformat_new_stream(s, NULL); |
| if (!st) |
| return AVERROR(ENOMEM); |
| |
| while (!avio_feof(pb)) { |
| if (avio_read(pb, guid, 16) != 16) |
| break; |
| size = avio_rl64(pb); |
| if (size <= 24 || INT64_MAX - size < avio_tell(pb)) |
| return AVERROR_INVALIDDATA; |
| |
| if (!memcmp(guid, ff_w64_guid_fmt, 16)) { |
| /* subtract chunk header size - normal wav file doesn't count it */ |
| ret = ff_get_wav_header(s, pb, st->codecpar, size - 24, 0); |
| if (ret < 0) |
| return ret; |
| avio_skip(pb, FFALIGN(size, INT64_C(8)) - size); |
| |
| avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); |
| } else if (!memcmp(guid, ff_w64_guid_fact, 16)) { |
| int64_t samples; |
| |
| samples = avio_rl64(pb); |
| if (samples > 0) |
| st->duration = samples; |
| avio_skip(pb, FFALIGN(size, INT64_C(8)) - 32); |
| } else if (!memcmp(guid, ff_w64_guid_data, 16)) { |
| wav->data_end = avio_tell(pb) + size - 24; |
| |
| data_ofs = avio_tell(pb); |
| if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) |
| break; |
| |
| avio_skip(pb, size - 24); |
| } else if (!memcmp(guid, ff_w64_guid_summarylist, 16)) { |
| int64_t start, end, cur; |
| uint32_t count, chunk_size, i; |
| |
| start = avio_tell(pb); |
| end = start + FFALIGN(size, INT64_C(8)) - 24; |
| count = avio_rl32(pb); |
| |
| for (i = 0; i < count; i++) { |
| char chunk_key[5], *value; |
| |
| if (avio_feof(pb) || (cur = avio_tell(pb)) < 0 || cur > end - 8 /* = tag + size */) |
| break; |
| |
| chunk_key[4] = 0; |
| avio_read(pb, chunk_key, 4); |
| chunk_size = avio_rl32(pb); |
| if (chunk_size == UINT32_MAX) |
| return AVERROR_INVALIDDATA; |
| |
| value = av_mallocz(chunk_size + 1); |
| if (!value) |
| return AVERROR(ENOMEM); |
| |
| ret = avio_get_str16le(pb, chunk_size, value, chunk_size); |
| avio_skip(pb, chunk_size - ret); |
| |
| av_dict_set(&s->metadata, chunk_key, value, AV_DICT_DONT_STRDUP_VAL); |
| } |
| |
| avio_skip(pb, end - avio_tell(pb)); |
| } else { |
| av_log(s, AV_LOG_DEBUG, "unknown guid: "FF_PRI_GUID"\n", FF_ARG_GUID(guid)); |
| avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24); |
| } |
| } |
| |
| if (!data_ofs) |
| return AVERROR_EOF; |
| |
| ff_metadata_conv_ctx(s, NULL, wav_metadata_conv); |
| ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv); |
| |
| handle_stream_probing(st); |
| st->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
| |
| avio_seek(pb, data_ofs, SEEK_SET); |
| |
| set_spdif(s, wav); |
| |
| return 0; |
| } |
| |
| AVInputFormat ff_w64_demuxer = { |
| .name = "w64", |
| .long_name = NULL_IF_CONFIG_SMALL("Sony Wave64"), |
| .priv_data_size = sizeof(WAVDemuxContext), |
| .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 */ |
