forked from KolibriOS/kolibrios
738 lines
23 KiB
C
738 lines
23 KiB
C
/*
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* WAV demuxer
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* Copyright (c) 2001, 2002 Fabrice Bellard
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*
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* Sony Wave64 demuxer
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* RF64 demuxer
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* Copyright (c) 2009 Daniel Verkamp
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/avassert.h"
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#include "libavutil/dict.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/log.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "avformat.h"
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#include "avio.h"
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#include "avio_internal.h"
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#include "internal.h"
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#include "metadata.h"
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#include "pcm.h"
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#include "riff.h"
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#include "w64.h"
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#include "spdif.h"
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typedef struct WAVDemuxContext {
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const AVClass *class;
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int64_t data_end;
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int w64;
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int64_t smv_data_ofs;
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int smv_block_size;
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int smv_frames_per_jpeg;
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int smv_block;
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int smv_last_stream;
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int smv_eof;
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int audio_eof;
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int ignore_length;
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int spdif;
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int smv_cur_pt;
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int smv_given_first;
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int unaligned; // e.g. if an odd number of bytes ID3 tag was prepended
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} WAVDemuxContext;
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#if CONFIG_WAV_DEMUXER
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static int64_t next_tag(AVIOContext *pb, uint32_t *tag)
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{
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*tag = avio_rl32(pb);
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return avio_rl32(pb);
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}
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/* RIFF chunks are always at even offsets relative to where they start. */
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static int64_t wav_seek_tag(WAVDemuxContext * wav, AVIOContext *s, int64_t offset, int whence)
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{
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offset += offset < INT64_MAX && offset + wav->unaligned & 1;
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return avio_seek(s, offset, whence);
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}
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/* return the size of the found tag */
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static int64_t find_tag(WAVDemuxContext * wav, AVIOContext *pb, uint32_t tag1)
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{
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unsigned int tag;
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int64_t size;
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for (;;) {
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if (url_feof(pb))
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return AVERROR_EOF;
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size = next_tag(pb, &tag);
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if (tag == tag1)
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break;
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wav_seek_tag(wav, pb, size, SEEK_CUR);
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}
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return size;
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}
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static int wav_probe(AVProbeData *p)
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{
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/* check file header */
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if (p->buf_size <= 32)
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return 0;
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if (!memcmp(p->buf + 8, "WAVE", 4)) {
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if (!memcmp(p->buf, "RIFF", 4))
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/* Since the ACT demuxer has a standard WAV header at the top of
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* its own, the returned score is decreased to avoid a probe
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* conflict between ACT and WAV. */
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return AVPROBE_SCORE_MAX - 1;
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else if (!memcmp(p->buf, "RF64", 4) &&
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!memcmp(p->buf + 12, "ds64", 4))
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return AVPROBE_SCORE_MAX;
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}
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return 0;
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}
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static void handle_stream_probing(AVStream *st)
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{
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if (st->codec->codec_id == AV_CODEC_ID_PCM_S16LE) {
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st->request_probe = AVPROBE_SCORE_EXTENSION;
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st->probe_packets = FFMIN(st->probe_packets, 4);
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}
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}
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static int wav_parse_fmt_tag(AVFormatContext *s, int64_t size, AVStream **st)
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{
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AVIOContext *pb = s->pb;
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int ret;
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/* parse fmt header */
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*st = avformat_new_stream(s, NULL);
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if (!*st)
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return AVERROR(ENOMEM);
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ret = ff_get_wav_header(pb, (*st)->codec, size);
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if (ret < 0)
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return ret;
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handle_stream_probing(*st);
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(*st)->need_parsing = AVSTREAM_PARSE_FULL_RAW;
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avpriv_set_pts_info(*st, 64, 1, (*st)->codec->sample_rate);
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return 0;
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}
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static inline int wav_parse_bext_string(AVFormatContext *s, const char *key,
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int length)
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{
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char temp[257];
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int ret;
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av_assert0(length <= sizeof(temp));
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if ((ret = avio_read(s->pb, temp, length)) < 0)
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return ret;
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temp[length] = 0;
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if (strlen(temp))
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return av_dict_set(&s->metadata, key, temp, 0);
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return 0;
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}
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static int wav_parse_bext_tag(AVFormatContext *s, int64_t size)
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{
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char temp[131], *coding_history;
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int ret, x;
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uint64_t time_reference;
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int64_t umid_parts[8], umid_mask = 0;
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if ((ret = wav_parse_bext_string(s, "description", 256)) < 0 ||
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(ret = wav_parse_bext_string(s, "originator", 32)) < 0 ||
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(ret = wav_parse_bext_string(s, "originator_reference", 32)) < 0 ||
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(ret = wav_parse_bext_string(s, "origination_date", 10)) < 0 ||
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(ret = wav_parse_bext_string(s, "origination_time", 8)) < 0)
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return ret;
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time_reference = avio_rl64(s->pb);
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snprintf(temp, sizeof(temp), "%"PRIu64, time_reference);
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if ((ret = av_dict_set(&s->metadata, "time_reference", temp, 0)) < 0)
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return ret;
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/* check if version is >= 1, in which case an UMID may be present */
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if (avio_rl16(s->pb) >= 1) {
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for (x = 0; x < 8; x++)
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umid_mask |= umid_parts[x] = avio_rb64(s->pb);
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if (umid_mask) {
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/* the string formatting below is per SMPTE 330M-2004 Annex C */
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if (umid_parts[4] == 0 && umid_parts[5] == 0 &&
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umid_parts[6] == 0 && umid_parts[7] == 0) {
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/* basic UMID */
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snprintf(temp, sizeof(temp),
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"0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
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umid_parts[0], umid_parts[1],
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umid_parts[2], umid_parts[3]);
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} else {
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/* extended UMID */
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snprintf(temp, sizeof(temp),
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"0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
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"%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
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umid_parts[0], umid_parts[1],
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umid_parts[2], umid_parts[3],
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umid_parts[4], umid_parts[5],
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umid_parts[6], umid_parts[7]);
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}
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if ((ret = av_dict_set(&s->metadata, "umid", temp, 0)) < 0)
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return ret;
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}
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avio_skip(s->pb, 190);
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} else
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avio_skip(s->pb, 254);
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if (size > 602) {
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/* CodingHistory present */
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size -= 602;
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if (!(coding_history = av_malloc(size + 1)))
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return AVERROR(ENOMEM);
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if ((ret = avio_read(s->pb, coding_history, size)) < 0)
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return ret;
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coding_history[size] = 0;
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if ((ret = av_dict_set(&s->metadata, "coding_history", coding_history,
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AV_DICT_DONT_STRDUP_VAL)) < 0)
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return ret;
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}
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return 0;
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}
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static const AVMetadataConv wav_metadata_conv[] = {
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{ "description", "comment" },
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{ "originator", "encoded_by" },
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{ "origination_date", "date" },
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{ "origination_time", "creation_time" },
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{ 0 },
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};
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/* wav input */
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static int wav_read_header(AVFormatContext *s)
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{
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int64_t size, av_uninit(data_size);
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int64_t sample_count = 0;
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int rf64;
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uint32_t tag;
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AVIOContext *pb = s->pb;
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AVStream *st = NULL;
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WAVDemuxContext *wav = s->priv_data;
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int ret, got_fmt = 0;
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int64_t next_tag_ofs, data_ofs = -1;
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wav->unaligned = avio_tell(s->pb) & 1;
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wav->smv_data_ofs = -1;
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/* check RIFF header */
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tag = avio_rl32(pb);
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rf64 = tag == MKTAG('R', 'F', '6', '4');
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if (!rf64 && tag != MKTAG('R', 'I', 'F', 'F'))
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return AVERROR_INVALIDDATA;
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avio_rl32(pb); /* file size */
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tag = avio_rl32(pb);
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if (tag != MKTAG('W', 'A', 'V', 'E'))
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return AVERROR_INVALIDDATA;
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if (rf64) {
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if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
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return AVERROR_INVALIDDATA;
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size = avio_rl32(pb);
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if (size < 24)
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return AVERROR_INVALIDDATA;
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avio_rl64(pb); /* RIFF size */
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data_size = avio_rl64(pb);
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sample_count = avio_rl64(pb);
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if (data_size < 0 || sample_count < 0) {
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av_log(s, AV_LOG_ERROR, "negative data_size and/or sample_count in "
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"ds64: data_size = %"PRId64", sample_count = %"PRId64"\n",
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data_size, sample_count);
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return AVERROR_INVALIDDATA;
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}
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avio_skip(pb, size - 24); /* skip rest of ds64 chunk */
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}
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for (;;) {
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AVStream *vst;
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size = next_tag(pb, &tag);
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next_tag_ofs = avio_tell(pb) + size;
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if (url_feof(pb))
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break;
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switch (tag) {
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case MKTAG('f', 'm', 't', ' '):
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/* only parse the first 'fmt ' tag found */
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if (!got_fmt && (ret = wav_parse_fmt_tag(s, size, &st)) < 0) {
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return ret;
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} else if (got_fmt)
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av_log(s, AV_LOG_WARNING, "found more than one 'fmt ' tag\n");
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got_fmt = 1;
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break;
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case MKTAG('d', 'a', 't', 'a'):
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if (!got_fmt) {
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av_log(s, AV_LOG_ERROR,
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"found no 'fmt ' tag before the 'data' tag\n");
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return AVERROR_INVALIDDATA;
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}
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if (rf64) {
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next_tag_ofs = wav->data_end = avio_tell(pb) + data_size;
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} else {
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data_size = size;
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next_tag_ofs = wav->data_end = size ? next_tag_ofs : INT64_MAX;
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}
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data_ofs = avio_tell(pb);
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/* don't look for footer metadata if we can't seek or if we don't
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* know where the data tag ends
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*/
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if (!pb->seekable || (!rf64 && !size))
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goto break_loop;
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break;
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case MKTAG('f', 'a', 'c', 't'):
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if (!sample_count)
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sample_count = avio_rl32(pb);
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break;
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case MKTAG('b', 'e', 'x', 't'):
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if ((ret = wav_parse_bext_tag(s, size)) < 0)
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return ret;
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break;
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case MKTAG('S','M','V','0'):
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if (!got_fmt) {
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av_log(s, AV_LOG_ERROR, "found no 'fmt ' tag before the 'SMV0' tag\n");
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return AVERROR_INVALIDDATA;
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}
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// SMV file, a wav file with video appended.
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if (size != MKTAG('0','2','0','0')) {
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av_log(s, AV_LOG_ERROR, "Unknown SMV version found\n");
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goto break_loop;
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}
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av_log(s, AV_LOG_DEBUG, "Found SMV data\n");
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wav->smv_given_first = 0;
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vst = avformat_new_stream(s, NULL);
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if (!vst)
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return AVERROR(ENOMEM);
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avio_r8(pb);
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vst->id = 1;
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vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
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vst->codec->codec_id = AV_CODEC_ID_SMVJPEG;
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vst->codec->width = avio_rl24(pb);
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vst->codec->height = avio_rl24(pb);
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if (ff_alloc_extradata(vst->codec, 4)) {
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av_log(s, AV_LOG_ERROR, "Could not allocate extradata.\n");
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return AVERROR(ENOMEM);
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}
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size = avio_rl24(pb);
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wav->smv_data_ofs = avio_tell(pb) + (size - 5) * 3;
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avio_rl24(pb);
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wav->smv_block_size = avio_rl24(pb);
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avpriv_set_pts_info(vst, 32, 1, avio_rl24(pb));
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vst->duration = avio_rl24(pb);
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avio_rl24(pb);
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avio_rl24(pb);
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wav->smv_frames_per_jpeg = avio_rl24(pb);
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if (wav->smv_frames_per_jpeg > 65536) {
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av_log(s, AV_LOG_ERROR, "too many frames per jpeg\n");
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return AVERROR_INVALIDDATA;
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}
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AV_WL32(vst->codec->extradata, wav->smv_frames_per_jpeg);
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wav->smv_cur_pt = 0;
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goto break_loop;
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case MKTAG('L', 'I', 'S', 'T'):
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if (size < 4) {
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av_log(s, AV_LOG_ERROR, "too short LIST tag\n");
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return AVERROR_INVALIDDATA;
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}
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switch (avio_rl32(pb)) {
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case MKTAG('I', 'N', 'F', 'O'):
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ff_read_riff_info(s, size - 4);
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}
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break;
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}
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/* seek to next tag unless we know that we'll run into EOF */
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if ((avio_size(pb) > 0 && next_tag_ofs >= avio_size(pb)) ||
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wav_seek_tag(wav, pb, next_tag_ofs, SEEK_SET) < 0) {
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break;
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}
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}
|
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break_loop:
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if (data_ofs < 0) {
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av_log(s, AV_LOG_ERROR, "no 'data' tag found\n");
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return AVERROR_INVALIDDATA;
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}
|
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avio_seek(pb, data_ofs, SEEK_SET);
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|
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if (!sample_count || av_get_exact_bits_per_sample(st->codec->codec_id) > 0)
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if ( st->codec->channels
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&& data_size
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&& av_get_bits_per_sample(st->codec->codec_id)
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&& wav->data_end <= avio_size(pb))
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sample_count = (data_size << 3)
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/
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(st->codec->channels * (uint64_t)av_get_bits_per_sample(st->codec->codec_id));
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|
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if (sample_count)
|
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st->duration = sample_count;
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|
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ff_metadata_conv_ctx(s, NULL, wav_metadata_conv);
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ff_metadata_conv_ctx(s, NULL, ff_riff_info_conv);
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|
|
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return 0;
|
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}
|
|
|
|
/**
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* Find chunk with w64 GUID by skipping over other chunks.
|
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* @return the size of the found chunk
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*/
|
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static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
|
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{
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uint8_t guid[16];
|
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int64_t size;
|
|
|
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while (!url_feof(pb)) {
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avio_read(pb, guid, 16);
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size = avio_rl64(pb);
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if (size <= 24)
|
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return AVERROR_INVALIDDATA;
|
|
if (!memcmp(guid, guid1, 16))
|
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return size;
|
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avio_skip(pb, FFALIGN(size, INT64_C(8)) - 24);
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}
|
|
return AVERROR_EOF;
|
|
}
|
|
|
|
#define MAX_SIZE 4096
|
|
|
|
static int wav_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, size;
|
|
int64_t left;
|
|
AVStream *st;
|
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WAVDemuxContext *wav = s->priv_data;
|
|
|
|
if (CONFIG_SPDIF_DEMUXER && wav->spdif == 0 &&
|
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s->streams[0]->codec->codec_tag == 1) {
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enum AVCodecID codec;
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ret = ff_spdif_probe(s->pb->buffer, s->pb->buf_end - s->pb->buffer,
|
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&codec);
|
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if (ret > AVPROBE_SCORE_EXTENSION) {
|
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s->streams[0]->codec->codec_id = codec;
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wav->spdif = 1;
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} else {
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wav->spdif = -1;
|
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}
|
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}
|
|
if (CONFIG_SPDIF_DEMUXER && wav->spdif == 1)
|
|
return ff_spdif_read_packet(s, pkt);
|
|
|
|
if (wav->smv_data_ofs > 0) {
|
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int64_t audio_dts, video_dts;
|
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smv_retry:
|
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audio_dts = (int32_t)s->streams[0]->cur_dts;
|
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video_dts = (int32_t)s->streams[1]->cur_dts;
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|
|
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if (audio_dts != AV_NOPTS_VALUE && video_dts != AV_NOPTS_VALUE) {
|
|
/*We always return a video frame first to get the pixel format first*/
|
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wav->smv_last_stream = wav->smv_given_first ?
|
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av_compare_ts(video_dts, s->streams[1]->time_base,
|
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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->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)
|
|
{
|
|
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->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);
|
|
}
|
|
|
|
#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_INT, { .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(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 (!url_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(pb, st->codec, size - 24);
|
|
if (ret < 0)
|
|
return ret;
|
|
avio_skip(pb, FFALIGN(size, INT64_C(8)) - size);
|
|
|
|
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
|
|
} else if (!memcmp(guid, ff_w64_guid_fact, 16)) {
|
|
int64_t samples;
|
|
|
|
samples = avio_rl64(pb);
|
|
if (samples > 0)
|
|
st->duration = samples;
|
|
} 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)
|
|
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 (url_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);
|
|
|
|
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);
|
|
|
|
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 */
|