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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00

avformat: add VPK demuxer

Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-11-11 10:49:30 +01:00
parent 183827e689
commit 9fb8c5d853
6 changed files with 121 additions and 2 deletions

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@ -20,7 +20,7 @@ version <next>:
- selectivecolor filter
- extensive native AAC encoder improvements
- ADPCM PSX decoder
- 3dostr, dcstr, genh, vag, xvag, ads, msf & svag demuxer
- 3dostr, dcstr, genh, vag, xvag, ads, msf, svag & vpk demuxer
- zscale filter
- wve demuxer
- zero-copy Intel QSV transcoding in ffmpeg

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@ -521,6 +521,8 @@ library:
@item VC-1 test bitstream @tab X @tab X
@item Vidvox Hap @tab X @tab X
@item Vivo @tab @tab X
@item VPK @tab @tab X
@tab Audio format used in Sony PS games.
@item WAV @tab X @tab X
@item WavPack @tab X @tab X
@item WebM @tab X @tab X

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@ -460,6 +460,7 @@ OBJS-$(CONFIG_VMD_DEMUXER) += sierravmd.o
OBJS-$(CONFIG_VOBSUB_DEMUXER) += subtitles.o # mpeg demuxer is in the dependencies
OBJS-$(CONFIG_VOC_DEMUXER) += vocdec.o voc.o
OBJS-$(CONFIG_VOC_MUXER) += vocenc.o voc.o
OBJS-$(CONFIG_VPK_DEMUXER) += vpk.o
OBJS-$(CONFIG_VPLAYER_DEMUXER) += vplayerdec.o subtitles.o
OBJS-$(CONFIG_VQF_DEMUXER) += vqf.o
OBJS-$(CONFIG_W64_DEMUXER) += wavdec.o w64.o pcm.o

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@ -324,6 +324,7 @@ void av_register_all(void)
REGISTER_DEMUXER (VMD, vmd);
REGISTER_DEMUXER (VOBSUB, vobsub);
REGISTER_MUXDEMUX(VOC, voc);
REGISTER_DEMUXER (VPK, vpk);
REGISTER_DEMUXER (VPLAYER, vplayer);
REGISTER_DEMUXER (VQF, vqf);
REGISTER_MUXDEMUX(W64, w64);

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@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFORMAT_VERSION_MAJOR 57
#define LIBAVFORMAT_VERSION_MINOR 15
#define LIBAVFORMAT_VERSION_MINOR 16
#define LIBAVFORMAT_VERSION_MICRO 100
#define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \

115
libavformat/vpk.c Normal file
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@ -0,0 +1,115 @@
/*
* VPK demuxer
* Copyright (c) 2015 Paul B Mahol
*
* 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/intreadwrite.h"
#include "avformat.h"
#include "internal.h"
typedef struct VPKDemuxContext {
unsigned block_count;
unsigned current_block;
unsigned last_block_size;
} VPKDemuxContext;
static int vpk_probe(AVProbeData *p)
{
if (AV_RL32(p->buf) != MKBETAG('V','P','K',' '))
return 0;
return AVPROBE_SCORE_MAX / 3 * 2;
}
static int vpk_read_header(AVFormatContext *s)
{
VPKDemuxContext *vpk = s->priv_data;
unsigned offset;
unsigned samples_per_block;
AVStream *st;
vpk->current_block = 0;
st = avformat_new_stream(s, NULL);
if (!st)
return AVERROR(ENOMEM);
avio_skip(s->pb, 4);
st->duration = avio_rl32(s->pb) * 28 / 16;
offset = avio_rl32(s->pb);
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = AV_CODEC_ID_ADPCM_PSX;
st->codec->block_align = avio_rl32(s->pb);
st->codec->sample_rate = avio_rl32(s->pb);
if (st->codec->sample_rate <= 0)
return AVERROR_INVALIDDATA;
st->codec->channels = avio_rl32(s->pb);
if (st->codec->channels <= 0)
return AVERROR_INVALIDDATA;
samples_per_block = ((st->codec->block_align / st->codec->channels) * 28) / 16;
vpk->block_count = (st->duration + (samples_per_block - 1)) / samples_per_block;
vpk->last_block_size = (st->duration % samples_per_block) * 16 * st->codec->channels / 28;
avio_skip(s->pb, offset - avio_tell(s->pb));
avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
return 0;
}
static int vpk_read_packet(AVFormatContext *s, AVPacket *pkt)
{
AVCodecContext *codec = s->streams[0]->codec;
VPKDemuxContext *vpk = s->priv_data;
int ret, i;
vpk->current_block++;
if (vpk->current_block == vpk->block_count) {
unsigned size = vpk->last_block_size / codec->channels;
unsigned skip = (codec->block_align - vpk->last_block_size) / codec->channels;
ret = av_new_packet(pkt, vpk->last_block_size);
if (ret < 0)
return ret;
for (i = 0; i < codec->channels; i++) {
ret = avio_read(s->pb, pkt->data + i * size, size);
avio_skip(s->pb, skip);
if (ret != size) {
av_packet_unref(pkt);
ret = AVERROR(EIO);
break;
}
}
pkt->stream_index = 0;
} else if (vpk->current_block < vpk->block_count) {
ret = av_get_packet(s->pb, pkt, codec->block_align);
pkt->stream_index = 0;
} else {
return AVERROR_EOF;
}
return ret;
}
AVInputFormat ff_vpk_demuxer = {
.name = "vpk",
.long_name = NULL_IF_CONFIG_SMALL("Sony PS2 VPK"),
.priv_data_size = sizeof(VPKDemuxContext),
.read_probe = vpk_probe,
.read_header = vpk_read_header,
.read_packet = vpk_read_packet,
.extensions = "vpk",
};