mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-06 08:08:58 +02:00
393 lines
11 KiB
C
393 lines
11 KiB
C
/*
|
|
* Argonaut Games CVG (de)muxer
|
|
*
|
|
* Copyright (C) 2021 Zane van Iperen (zane@zanevaniperen.com)
|
|
*
|
|
* 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 "avformat.h"
|
|
#include "internal.h"
|
|
#include "libavutil/opt.h"
|
|
#include "libavutil/intreadwrite.h"
|
|
|
|
/*
|
|
* .CVG files are essentially PSX ADPCM wrapped with a size and checksum.
|
|
* Found in the PSX versions of the game.
|
|
*/
|
|
|
|
#define ARGO_CVG_HEADER_SIZE 12
|
|
#define ARGO_CVG_BLOCK_ALIGN 0x10
|
|
#define ARGO_CVG_NB_BLOCKS 32
|
|
#define ARGO_CVG_SAMPLES_PER_BLOCK 28
|
|
|
|
typedef struct ArgoCVGHeader {
|
|
uint32_t size; /*< File size -8 (this + trailing checksum) */
|
|
uint32_t unk1; /*< Unknown. Always seems to be 0 or 1. */
|
|
uint32_t unk2; /*< Unknown. Always seems to be 0 or 1. */
|
|
} ArgoCVGHeader;
|
|
|
|
typedef struct ArgoCVGOverride {
|
|
const char *name;
|
|
ArgoCVGHeader header;
|
|
uint32_t checksum;
|
|
int sample_rate;
|
|
} ArgoCVGOverride;
|
|
|
|
typedef struct ArgoCVGDemuxContext {
|
|
ArgoCVGHeader header;
|
|
uint32_t checksum;
|
|
uint32_t num_blocks;
|
|
uint32_t blocks_read;
|
|
} ArgoCVGDemuxContext;
|
|
|
|
typedef struct ArgoCVGMuxContext {
|
|
const AVClass *class;
|
|
int skip_rate_check;
|
|
uint32_t checksum;
|
|
size_t size;
|
|
} ArgoCVGMuxContext;
|
|
|
|
#if CONFIG_ARGO_CVG_DEMUXER
|
|
/* "Special" files that are played at a different rate. */
|
|
static ArgoCVGOverride overrides[] = {
|
|
{ "CRYS.CVG", { 23592, 0, 1 }, 2495499, 88200 }, /* Beta */
|
|
{ "REDCRY88.CVG", { 38280, 0, 1 }, 4134848, 88200 }, /* Beta */
|
|
{ "DANLOOP1.CVG", { 54744, 1, 0 }, 5684641, 37800 }, /* Beta */
|
|
{ "PICKUP88.CVG", { 12904, 0, 1 }, 1348091, 48000 }, /* Beta */
|
|
{ "SELECT1.CVG", { 5080, 0, 1 }, 549987, 44100 }, /* Beta */
|
|
};
|
|
|
|
static int argo_cvg_probe(const AVProbeData *p)
|
|
{
|
|
ArgoCVGHeader cvg;
|
|
|
|
/*
|
|
* It's almost impossible to detect these files based
|
|
* on the header alone. File extension is (unfortunately)
|
|
* the best way forward.
|
|
*/
|
|
if (!av_match_ext(p->filename, "cvg"))
|
|
return 0;
|
|
|
|
if (p->buf_size < ARGO_CVG_HEADER_SIZE)
|
|
return 0;
|
|
|
|
cvg.size = AV_RL32(p->buf + 0);
|
|
cvg.unk1 = AV_RL32(p->buf + 4);
|
|
cvg.unk2 = AV_RL32(p->buf + 8);
|
|
|
|
if (cvg.size < 8)
|
|
return 0;
|
|
|
|
if (cvg.unk1 != 0 && cvg.unk1 != 1)
|
|
return 0;
|
|
|
|
if (cvg.unk2 != 0 && cvg.unk2 != 1)
|
|
return 0;
|
|
|
|
return AVPROBE_SCORE_MAX / 4 + 1;
|
|
}
|
|
|
|
static int argo_cvg_read_checksum(AVIOContext *pb, const ArgoCVGHeader *cvg, uint32_t *checksum)
|
|
{
|
|
int ret;
|
|
uint8_t buf[4];
|
|
|
|
if (!(pb->seekable & AVIO_SEEKABLE_NORMAL)) {
|
|
*checksum = 0;
|
|
return 0;
|
|
}
|
|
|
|
if ((ret = avio_seek(pb, cvg->size + 4, SEEK_SET)) < 0)
|
|
return ret;
|
|
|
|
/* NB: Not using avio_rl32() because no error checking. */
|
|
if ((ret = avio_read(pb, buf, sizeof(buf))) < 0)
|
|
return ret;
|
|
else if (ret != sizeof(buf))
|
|
return AVERROR(EIO);
|
|
|
|
if ((ret = avio_seek(pb, ARGO_CVG_HEADER_SIZE, SEEK_SET)) < 0)
|
|
return ret;
|
|
|
|
*checksum = AV_RL32(buf);
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_read_header(AVFormatContext *s)
|
|
{
|
|
int ret;
|
|
AVStream *st;
|
|
AVCodecParameters *par;
|
|
uint8_t buf[ARGO_CVG_HEADER_SIZE];
|
|
const char *filename = av_basename(s->url);
|
|
ArgoCVGDemuxContext *ctx = s->priv_data;
|
|
|
|
if (!(st = avformat_new_stream(s, NULL)))
|
|
return AVERROR(ENOMEM);
|
|
|
|
if ((ret = avio_read(s->pb, buf, ARGO_CVG_HEADER_SIZE)) < 0)
|
|
return ret;
|
|
else if (ret != ARGO_CVG_HEADER_SIZE)
|
|
return AVERROR(EIO);
|
|
|
|
ctx->header.size = AV_RL32(buf + 0);
|
|
ctx->header.unk1 = AV_RL32(buf + 4);
|
|
ctx->header.unk2 = AV_RL32(buf + 8);
|
|
|
|
if (ctx->header.size < 8)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
av_log(s, AV_LOG_TRACE, "size = %u\n", ctx->header.size);
|
|
av_log(s, AV_LOG_TRACE, "unk = %u, %u\n", ctx->header.unk1, ctx->header.unk2);
|
|
|
|
if ((ret = argo_cvg_read_checksum(s->pb, &ctx->header, &ctx->checksum)) < 0)
|
|
return ret;
|
|
|
|
av_log(s, AV_LOG_TRACE, "checksum = %u\n", ctx->checksum);
|
|
|
|
par = st->codecpar;
|
|
par->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
par->codec_id = AV_CODEC_ID_ADPCM_PSX;
|
|
par->sample_rate = 22050;
|
|
|
|
for (size_t i = 0; i < FF_ARRAY_ELEMS(overrides); i++) {
|
|
const ArgoCVGOverride *ovr = overrides + i;
|
|
if (ovr->header.size != ctx->header.size ||
|
|
ovr->header.unk1 != ctx->header.unk1 ||
|
|
ovr->header.unk2 != ctx->header.unk2 ||
|
|
ovr->checksum != ctx->checksum ||
|
|
av_strcasecmp(filename, ovr->name) != 0)
|
|
continue;
|
|
|
|
av_log(s, AV_LOG_TRACE, "found override, name = %s\n", ovr->name);
|
|
par->sample_rate = ovr->sample_rate;
|
|
break;
|
|
}
|
|
|
|
par->channels = 1;
|
|
par->channel_layout = AV_CH_LAYOUT_MONO;
|
|
|
|
par->bits_per_coded_sample = 4;
|
|
par->bits_per_raw_sample = 16;
|
|
par->block_align = ARGO_CVG_BLOCK_ALIGN;
|
|
par->bit_rate = par->sample_rate * par->bits_per_coded_sample;
|
|
|
|
ctx->num_blocks = (ctx->header.size - 8) / ARGO_CVG_BLOCK_ALIGN;
|
|
|
|
av_log(s, AV_LOG_TRACE, "num blocks = %u\n", ctx->num_blocks);
|
|
|
|
avpriv_set_pts_info(st, 64, 1, par->sample_rate);
|
|
|
|
st->start_time = 0;
|
|
st->duration = ctx->num_blocks * ARGO_CVG_SAMPLES_PER_BLOCK;
|
|
st->nb_frames = ctx->num_blocks;
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret;
|
|
AVStream *st = s->streams[0];
|
|
ArgoCVGDemuxContext *ctx = s->priv_data;
|
|
|
|
if (ctx->blocks_read >= ctx->num_blocks)
|
|
return AVERROR_EOF;
|
|
|
|
ret = av_get_packet(s->pb, pkt, st->codecpar->block_align *
|
|
FFMIN(ARGO_CVG_NB_BLOCKS, ctx->num_blocks - ctx->blocks_read));
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (ret % st->codecpar->block_align != 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
pkt->stream_index = 0;
|
|
pkt->duration = ARGO_CVG_SAMPLES_PER_BLOCK * (ret / st->codecpar->block_align);
|
|
pkt->pts = ctx->blocks_read * ARGO_CVG_SAMPLES_PER_BLOCK;
|
|
pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
|
|
|
|
ctx->blocks_read += ret / st->codecpar->block_align;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_seek(AVFormatContext *s, int stream_index,
|
|
int64_t pts, int flags)
|
|
{
|
|
int64_t ret;
|
|
ArgoCVGDemuxContext *ctx = s->priv_data;
|
|
|
|
if (pts != 0 || stream_index != 0)
|
|
return AVERROR(EINVAL);
|
|
|
|
if ((ret = avio_seek(s->pb, ARGO_CVG_HEADER_SIZE, SEEK_SET)) < 0)
|
|
return ret;
|
|
|
|
ctx->blocks_read = 0;
|
|
return 0;
|
|
}
|
|
|
|
const AVInputFormat ff_argo_cvg_demuxer = {
|
|
.name = "argo_cvg",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Argonaut Games CVG"),
|
|
.priv_data_size = sizeof(ArgoCVGDemuxContext),
|
|
.read_probe = argo_cvg_probe,
|
|
.read_header = argo_cvg_read_header,
|
|
.read_packet = argo_cvg_read_packet,
|
|
.read_seek = argo_cvg_seek,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_ARGO_CVG_MUXER
|
|
static int argo_cvg_write_init(AVFormatContext *s)
|
|
{
|
|
ArgoCVGMuxContext *ctx = s->priv_data;
|
|
const AVCodecParameters *par;
|
|
|
|
if (s->nb_streams != 1) {
|
|
av_log(s, AV_LOG_ERROR, "CVG files have exactly one stream\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
par = s->streams[0]->codecpar;
|
|
|
|
if (par->codec_id != AV_CODEC_ID_ADPCM_PSX) {
|
|
av_log(s, AV_LOG_ERROR, "%s codec not supported\n",
|
|
avcodec_get_name(par->codec_id));
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (par->channels != 1) {
|
|
av_log(s, AV_LOG_ERROR, "CVG files only support 1 channel\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (par->block_align != ARGO_CVG_BLOCK_ALIGN)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (!ctx->skip_rate_check && par->sample_rate != 22050) {
|
|
av_log(s, AV_LOG_ERROR, "Sample rate must be 22050\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL)) {
|
|
av_log(s, AV_LOG_ERROR, "Stream not seekable, unable to write output file\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_write_header(AVFormatContext *s)
|
|
{
|
|
ArgoCVGMuxContext *ctx = s->priv_data;
|
|
|
|
avio_wl32(s->pb, 0); /* Size, fixed later. */
|
|
avio_wl32(s->pb, 0);
|
|
avio_wl32(s->pb, 1);
|
|
|
|
ctx->checksum = 1;
|
|
ctx->size = 8;
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
ArgoCVGMuxContext *ctx = s->priv_data;
|
|
AVCodecParameters *par = s->streams[0]->codecpar;
|
|
|
|
if (pkt->size % par->block_align != 0)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
avio_write(s->pb, pkt->data, pkt->size);
|
|
|
|
ctx->size += pkt->size;
|
|
|
|
if (ctx->size > UINT32_MAX)
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
for (int i = 0; i < pkt->size; i++)
|
|
ctx->checksum += pkt->data[i];
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int argo_cvg_write_trailer(AVFormatContext *s)
|
|
{
|
|
ArgoCVGMuxContext *ctx = s->priv_data;
|
|
int64_t ret;
|
|
|
|
av_log(s, AV_LOG_TRACE, "size = %zu\n", ctx->size);
|
|
av_log(s, AV_LOG_TRACE, "checksum = %u\n", ctx->checksum);
|
|
|
|
/*
|
|
* NB: This is wrong. We're always slightly under the original.
|
|
* Verified by remuxing. For reference (orig - remuxed):
|
|
* - TCLD.CVG: 4706074 - 4705696 = 378
|
|
* - DANLOOP1.CVG: 5684641 - 5684212 = 429
|
|
* - CRYS.CVG: 2495499 - 2495367 = 132
|
|
* - PICKUP88.CVG: 1348091 - 1347937 = 154
|
|
* - SELECT1.CVG: 549987 - 549752 = 235
|
|
* Also NB: it doesn't matter, the game doesn't check them.
|
|
*/
|
|
avio_wl32(s->pb, ctx->checksum);
|
|
|
|
if ((ret = avio_seek(s->pb, 0, SEEK_SET) < 0))
|
|
return ret;
|
|
|
|
avio_wl32(s->pb, (uint32_t)ctx->size);
|
|
return 0;
|
|
}
|
|
|
|
static const AVOption argo_cvg_options[] = {
|
|
{
|
|
.name = "skip_rate_check",
|
|
.help = "skip sample rate check",
|
|
.offset = offsetof(ArgoCVGMuxContext, skip_rate_check),
|
|
.type = AV_OPT_TYPE_BOOL,
|
|
.default_val = {.i64 = 0},
|
|
.min = 0,
|
|
.max = 1,
|
|
.flags = AV_OPT_FLAG_ENCODING_PARAM
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVClass argo_cvg_muxer_class = {
|
|
.class_name = "argo_cvg_muxer",
|
|
.item_name = av_default_item_name,
|
|
.option = argo_cvg_options,
|
|
.version = LIBAVUTIL_VERSION_INT
|
|
};
|
|
|
|
const AVOutputFormat ff_argo_cvg_muxer = {
|
|
.name = "argo_cvg",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Argonaut Games CVG"),
|
|
.extensions = "cvg",
|
|
.audio_codec = AV_CODEC_ID_ADPCM_PSX,
|
|
.video_codec = AV_CODEC_ID_NONE,
|
|
.init = argo_cvg_write_init,
|
|
.write_header = argo_cvg_write_header,
|
|
.write_packet = argo_cvg_write_packet,
|
|
.write_trailer = argo_cvg_write_trailer,
|
|
.priv_class = &argo_cvg_muxer_class,
|
|
.priv_data_size = sizeof(ArgoCVGMuxContext),
|
|
};
|
|
#endif
|