mirror of
https://github.com/pineappleEA/pineapple-src.git
synced 2024-12-09 01:48:23 -05:00
340 lines
10 KiB
C
Executable File
340 lines
10 KiB
C
Executable File
/*
|
|
* WavPack demuxer
|
|
* Copyright (c) 2006,2011 Konstantin Shishkov
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/channel_layout.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "libavutil/dict.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "apetag.h"
|
|
#include "id3v1.h"
|
|
#include "wv.h"
|
|
|
|
enum WV_FLAGS {
|
|
WV_MONO = 0x0004,
|
|
WV_HYBRID = 0x0008,
|
|
WV_JOINT = 0x0010,
|
|
WV_CROSSD = 0x0020,
|
|
WV_HSHAPE = 0x0040,
|
|
WV_FLOAT = 0x0080,
|
|
WV_INT32 = 0x0100,
|
|
WV_HBR = 0x0200,
|
|
WV_HBAL = 0x0400,
|
|
WV_MCINIT = 0x0800,
|
|
WV_MCEND = 0x1000,
|
|
WV_DSD = 0x80000000,
|
|
};
|
|
|
|
static const int wv_rates[16] = {
|
|
6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000,
|
|
32000, 44100, 48000, 64000, 88200, 96000, 192000, -1
|
|
};
|
|
|
|
typedef struct WVContext {
|
|
uint8_t block_header[WV_HEADER_SIZE];
|
|
WvHeader header;
|
|
int rate, chan, bpp;
|
|
uint32_t chmask;
|
|
int multichannel;
|
|
int block_parsed;
|
|
int64_t pos;
|
|
|
|
int64_t apetag_start;
|
|
} WVContext;
|
|
|
|
static int wv_probe(const AVProbeData *p)
|
|
{
|
|
/* check file header */
|
|
if (p->buf_size <= 32)
|
|
return 0;
|
|
if (AV_RL32(&p->buf[0]) == MKTAG('w', 'v', 'p', 'k') &&
|
|
AV_RL32(&p->buf[4]) >= 24 &&
|
|
AV_RL32(&p->buf[4]) <= WV_BLOCK_LIMIT &&
|
|
AV_RL16(&p->buf[8]) >= 0x402 &&
|
|
AV_RL16(&p->buf[8]) <= 0x410)
|
|
return AVPROBE_SCORE_MAX;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb)
|
|
{
|
|
WVContext *wc = ctx->priv_data;
|
|
int ret;
|
|
int rate, rate_x, bpp, chan;
|
|
uint32_t chmask, flags;
|
|
|
|
wc->pos = avio_tell(pb);
|
|
|
|
/* don't return bogus packets with the ape tag data */
|
|
if (wc->apetag_start && wc->pos >= wc->apetag_start)
|
|
return AVERROR_EOF;
|
|
|
|
ret = avio_read(pb, wc->block_header, WV_HEADER_SIZE);
|
|
if (ret != WV_HEADER_SIZE)
|
|
return (ret < 0) ? ret : AVERROR_EOF;
|
|
|
|
ret = ff_wv_parse_header(&wc->header, wc->block_header);
|
|
if (ret < 0) {
|
|
av_log(ctx, AV_LOG_ERROR, "Invalid block header.\n");
|
|
return ret;
|
|
}
|
|
|
|
if (wc->header.version < 0x402 || wc->header.version > 0x410) {
|
|
avpriv_report_missing_feature(ctx, "WV version 0x%03X",
|
|
wc->header.version);
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
/* Blocks with zero samples don't contain actual audio information
|
|
* and should be ignored */
|
|
if (!wc->header.samples)
|
|
return 0;
|
|
// parse flags
|
|
flags = wc->header.flags;
|
|
rate_x = (flags & WV_DSD) ? 4 : 1;
|
|
bpp = (flags & WV_DSD) ? 0 : ((flags & 3) + 1) << 3;
|
|
chan = 1 + !(flags & WV_MONO);
|
|
chmask = flags & WV_MONO ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
|
|
rate = wv_rates[(flags >> 23) & 0xF];
|
|
wc->multichannel = !(wc->header.initial && wc->header.final);
|
|
if (wc->multichannel) {
|
|
chan = wc->chan;
|
|
chmask = wc->chmask;
|
|
}
|
|
if ((rate == -1 || !chan || flags & WV_DSD) && !wc->block_parsed) {
|
|
int64_t block_end = avio_tell(pb) + wc->header.blocksize;
|
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Cannot determine additional parameters\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
while (avio_tell(pb) < block_end && !avio_feof(pb)) {
|
|
int id, size;
|
|
id = avio_r8(pb);
|
|
size = (id & 0x80) ? avio_rl24(pb) : avio_r8(pb);
|
|
size <<= 1;
|
|
if (id & 0x40)
|
|
size--;
|
|
switch (id & 0x3F) {
|
|
case 0xD:
|
|
if (size <= 1) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Insufficient channel information\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
chan = avio_r8(pb);
|
|
switch (size - 2) {
|
|
case 0:
|
|
chmask = avio_r8(pb);
|
|
break;
|
|
case 1:
|
|
chmask = avio_rl16(pb);
|
|
break;
|
|
case 2:
|
|
chmask = avio_rl24(pb);
|
|
break;
|
|
case 3:
|
|
chmask = avio_rl32(pb);
|
|
break;
|
|
case 4:
|
|
avio_skip(pb, 1);
|
|
chan |= (avio_r8(pb) & 0xF) << 8;
|
|
chan += 1;
|
|
chmask = avio_rl24(pb);
|
|
break;
|
|
case 5:
|
|
avio_skip(pb, 1);
|
|
chan |= (avio_r8(pb) & 0xF) << 8;
|
|
chan += 1;
|
|
chmask = avio_rl32(pb);
|
|
break;
|
|
default:
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Invalid channel info size %d\n", size);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
break;
|
|
case 0xE:
|
|
if (size <= 1) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Invalid DSD block\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
rate_x = 1U << (avio_r8(pb) & 0x1f);
|
|
if (size)
|
|
avio_skip(pb, size-1);
|
|
break;
|
|
case 0x27:
|
|
rate = avio_rl24(pb);
|
|
break;
|
|
default:
|
|
avio_skip(pb, size);
|
|
}
|
|
if (id & 0x40)
|
|
avio_skip(pb, 1);
|
|
}
|
|
if (rate == -1) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Cannot determine custom sampling rate\n");
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
avio_seek(pb, block_end - wc->header.blocksize, SEEK_SET);
|
|
}
|
|
if (!wc->bpp)
|
|
wc->bpp = bpp;
|
|
if (!wc->chan)
|
|
wc->chan = chan;
|
|
if (!wc->chmask)
|
|
wc->chmask = chmask;
|
|
if (!wc->rate)
|
|
wc->rate = rate * rate_x;
|
|
|
|
if (flags && bpp != wc->bpp) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Bits per sample differ, this block: %i, header block: %i\n",
|
|
bpp, wc->bpp);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (flags && !wc->multichannel && chan != wc->chan) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Channels differ, this block: %i, header block: %i\n",
|
|
chan, wc->chan);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
if (flags && rate != -1 && !(flags & WV_DSD) && rate * rate_x != wc->rate) {
|
|
av_log(ctx, AV_LOG_ERROR,
|
|
"Sampling rate differ, this block: %i, header block: %i\n",
|
|
rate * rate_x, wc->rate);
|
|
return AVERROR_INVALIDDATA;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int wv_read_header(AVFormatContext *s)
|
|
{
|
|
AVIOContext *pb = s->pb;
|
|
WVContext *wc = s->priv_data;
|
|
AVStream *st;
|
|
int ret;
|
|
|
|
wc->block_parsed = 0;
|
|
for (;;) {
|
|
if ((ret = wv_read_block_header(s, pb)) < 0)
|
|
return ret;
|
|
if (!wc->header.samples)
|
|
avio_skip(pb, wc->header.blocksize);
|
|
else
|
|
break;
|
|
}
|
|
|
|
/* now we are ready: build format streams */
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
if ((ret = ff_alloc_extradata(st->codecpar, 2)) < 0)
|
|
return ret;
|
|
AV_WL16(st->codecpar->extradata, wc->header.version);
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codecpar->codec_id = AV_CODEC_ID_WAVPACK;
|
|
st->codecpar->channels = wc->chan;
|
|
st->codecpar->channel_layout = wc->chmask;
|
|
st->codecpar->sample_rate = wc->rate;
|
|
st->codecpar->bits_per_coded_sample = wc->bpp;
|
|
avpriv_set_pts_info(st, 64, 1, wc->rate);
|
|
st->start_time = 0;
|
|
if (wc->header.total_samples != 0xFFFFFFFFu)
|
|
st->duration = wc->header.total_samples;
|
|
|
|
if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
|
|
int64_t cur = avio_tell(s->pb);
|
|
wc->apetag_start = ff_ape_parse_tag(s);
|
|
if (!av_dict_get(s->metadata, "", NULL, AV_DICT_IGNORE_SUFFIX))
|
|
ff_id3v1_read(s);
|
|
avio_seek(s->pb, cur, SEEK_SET);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int wv_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
WVContext *wc = s->priv_data;
|
|
int ret;
|
|
int off;
|
|
int64_t pos;
|
|
uint32_t block_samples;
|
|
|
|
if (avio_feof(s->pb))
|
|
return AVERROR_EOF;
|
|
if (wc->block_parsed) {
|
|
if ((ret = wv_read_block_header(s, s->pb)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
pos = wc->pos;
|
|
if ((ret = av_new_packet(pkt, wc->header.blocksize + WV_HEADER_SIZE)) < 0)
|
|
return ret;
|
|
memcpy(pkt->data, wc->block_header, WV_HEADER_SIZE);
|
|
ret = avio_read(s->pb, pkt->data + WV_HEADER_SIZE, wc->header.blocksize);
|
|
if (ret != wc->header.blocksize) {
|
|
return AVERROR(EIO);
|
|
}
|
|
while (!(wc->header.flags & WV_FLAG_FINAL_BLOCK)) {
|
|
if ((ret = wv_read_block_header(s, s->pb)) < 0) {
|
|
return ret;
|
|
}
|
|
|
|
off = pkt->size;
|
|
if ((ret = av_grow_packet(pkt, WV_HEADER_SIZE + wc->header.blocksize)) < 0) {
|
|
return ret;
|
|
}
|
|
memcpy(pkt->data + off, wc->block_header, WV_HEADER_SIZE);
|
|
|
|
ret = avio_read(s->pb, pkt->data + off + WV_HEADER_SIZE, wc->header.blocksize);
|
|
if (ret != wc->header.blocksize) {
|
|
return (ret < 0) ? ret : AVERROR_EOF;
|
|
}
|
|
}
|
|
pkt->stream_index = 0;
|
|
pkt->pos = pos;
|
|
wc->block_parsed = 1;
|
|
pkt->pts = wc->header.block_idx;
|
|
block_samples = wc->header.samples;
|
|
if (block_samples > INT32_MAX)
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Too many samples in block: %"PRIu32"\n", block_samples);
|
|
else
|
|
pkt->duration = block_samples;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_wv_demuxer = {
|
|
.name = "wv",
|
|
.long_name = NULL_IF_CONFIG_SMALL("WavPack"),
|
|
.priv_data_size = sizeof(WVContext),
|
|
.read_probe = wv_probe,
|
|
.read_header = wv_read_header,
|
|
.read_packet = wv_read_packet,
|
|
.flags = AVFMT_GENERIC_INDEX,
|
|
};
|