mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
780 lines
23 KiB
C
780 lines
23 KiB
C
/*
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* WAV muxer and 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/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 "internal.h"
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#include "avio_internal.h"
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#include "pcm.h"
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#include "riff.h"
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#include "avio.h"
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#include "metadata.h"
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typedef struct {
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const AVClass *class;
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int64_t data;
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int64_t data_end;
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int64_t minpts;
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int64_t maxpts;
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int last_duration;
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int w64;
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int write_bext;
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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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} WAVContext;
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#if CONFIG_WAV_MUXER
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static inline void bwf_write_bext_string(AVFormatContext *s, const char *key, int maxlen)
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{
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AVDictionaryEntry *tag;
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int len = 0;
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if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
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len = strlen(tag->value);
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len = FFMIN(len, maxlen);
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avio_write(s->pb, tag->value, len);
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}
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ffio_fill(s->pb, 0, maxlen - len);
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}
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static void bwf_write_bext_chunk(AVFormatContext *s)
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{
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AVDictionaryEntry *tmp_tag;
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uint64_t time_reference = 0;
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int64_t bext = ff_start_tag(s->pb, "bext");
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bwf_write_bext_string(s, "description", 256);
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bwf_write_bext_string(s, "originator", 32);
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bwf_write_bext_string(s, "originator_reference", 32);
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bwf_write_bext_string(s, "origination_date", 10);
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bwf_write_bext_string(s, "origination_time", 8);
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if (tmp_tag = av_dict_get(s->metadata, "time_reference", NULL, 0))
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time_reference = strtoll(tmp_tag->value, NULL, 10);
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avio_wl64(s->pb, time_reference);
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avio_wl16(s->pb, 1); // set version to 1
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if (tmp_tag = av_dict_get(s->metadata, "umid", NULL, 0)) {
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unsigned char umidpart_str[17] = {0};
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int i;
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uint64_t umidpart;
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int len = strlen(tmp_tag->value+2);
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for (i = 0; i < len/16; i++) {
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memcpy(umidpart_str, tmp_tag->value + 2 + (i*16), 16);
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umidpart = strtoll(umidpart_str, NULL, 16);
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avio_wb64(s->pb, umidpart);
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}
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ffio_fill(s->pb, 0, 64 - i*8);
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} else
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ffio_fill(s->pb, 0, 64); // zero UMID
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ffio_fill(s->pb, 0, 190); // Reserved
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if (tmp_tag = av_dict_get(s->metadata, "coding_history", NULL, 0))
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avio_put_str(s->pb, tmp_tag->value);
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ff_end_tag(s->pb, bext);
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}
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static int wav_write_header(AVFormatContext *s)
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{
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WAVContext *wav = s->priv_data;
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AVIOContext *pb = s->pb;
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int64_t fmt, fact;
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ffio_wfourcc(pb, "RIFF");
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avio_wl32(pb, 0); /* file length */
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ffio_wfourcc(pb, "WAVE");
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/* format header */
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fmt = ff_start_tag(pb, "fmt ");
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if (ff_put_wav_header(pb, s->streams[0]->codec) < 0) {
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av_log(s, AV_LOG_ERROR, "%s codec not supported in WAVE format\n",
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s->streams[0]->codec->codec ? s->streams[0]->codec->codec->name : "NONE");
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return -1;
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}
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ff_end_tag(pb, fmt);
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if (s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */
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&& s->pb->seekable) {
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fact = ff_start_tag(pb, "fact");
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avio_wl32(pb, 0);
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ff_end_tag(pb, fact);
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}
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if (wav->write_bext)
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bwf_write_bext_chunk(s);
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avpriv_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
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wav->maxpts = wav->last_duration = 0;
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wav->minpts = INT64_MAX;
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/* data header */
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wav->data = ff_start_tag(pb, "data");
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avio_flush(pb);
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return 0;
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}
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static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVIOContext *pb = s->pb;
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WAVContext *wav = s->priv_data;
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avio_write(pb, pkt->data, pkt->size);
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if(pkt->pts != AV_NOPTS_VALUE) {
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wav->minpts = FFMIN(wav->minpts, pkt->pts);
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wav->maxpts = FFMAX(wav->maxpts, pkt->pts);
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wav->last_duration = pkt->duration;
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} else
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av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
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return 0;
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}
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static int wav_write_trailer(AVFormatContext *s)
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{
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AVIOContext *pb = s->pb;
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WAVContext *wav = s->priv_data;
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int64_t file_size;
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avio_flush(pb);
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if (s->pb->seekable) {
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ff_end_tag(pb, wav->data);
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/* update file size */
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file_size = avio_tell(pb);
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avio_seek(pb, 4, SEEK_SET);
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avio_wl32(pb, (uint32_t)(file_size - 8));
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avio_seek(pb, file_size, SEEK_SET);
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avio_flush(pb);
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if(s->streams[0]->codec->codec_tag != 0x01) {
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/* Update num_samps in fact chunk */
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int number_of_samples;
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number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
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s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
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s->streams[0]->time_base.den);
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avio_seek(pb, wav->data-12, SEEK_SET);
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avio_wl32(pb, number_of_samples);
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avio_seek(pb, file_size, SEEK_SET);
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avio_flush(pb);
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}
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}
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return 0;
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}
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#define OFFSET(x) offsetof(WAVContext, x)
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#define ENC AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{ "write_bext", "Write BEXT chunk.", OFFSET(write_bext), AV_OPT_TYPE_INT, { 0 }, 0, 1, ENC },
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{ NULL },
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};
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static const AVClass wav_muxer_class = {
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.class_name = "WAV muxer",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVOutputFormat ff_wav_muxer = {
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.name = "wav",
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.long_name = NULL_IF_CONFIG_SMALL("WAV format"),
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.mime_type = "audio/x-wav",
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.extensions = "wav",
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.priv_data_size = sizeof(WAVContext),
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.audio_codec = CODEC_ID_PCM_S16LE,
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.video_codec = CODEC_ID_NONE,
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.write_header = wav_write_header,
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.write_packet = wav_write_packet,
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.write_trailer = wav_write_trailer,
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.codec_tag= (const AVCodecTag* const []){ff_codec_wav_tags, 0},
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.priv_class = &wav_muxer_class,
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};
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#endif /* CONFIG_WAV_MUXER */
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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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/* return the size of the found tag */
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static int64_t find_tag(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 -1;
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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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avio_skip(pb, size);
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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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/*
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Since ACT demuxer has standard WAV header at top of it's own,
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returning score is decreased to avoid probe conflict
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between ACT and WAV.
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*/
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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 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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(*st)->need_parsing = AVSTREAM_PARSE_FULL;
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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 && umid_parts[6] == 0 && umid_parts[7] == 0) {
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/* basic UMID */
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snprintf(temp, sizeof(temp), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
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umid_parts[0], umid_parts[1], 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), "0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64
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"0x%016"PRIX64"%016"PRIX64"%016"PRIX64"%016"PRIX64,
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umid_parts[0], umid_parts[1], umid_parts[2], umid_parts[3],
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umid_parts[4], umid_parts[5], 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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AVFormatParameters *ap)
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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, list_type;
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AVIOContext *pb = s->pb;
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AVStream *st = NULL;
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WAVContext *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->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 -1;
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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 -1;
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if (rf64) {
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if (avio_rl32(pb) != MKTAG('d', 's', '6', '4'))
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return -1;
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size = avio_rl32(pb);
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if (size < 24)
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return -1;
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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, "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)
|
|
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'):
|
|
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 (!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 (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);
|
|
}
|
|
|
|
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},
|
|
};
|
|
#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 */
|