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72415b2adb
ffmpeg/libavformat/psxstr.c
Stefano Sabatini 72415b2adb Define AVMediaType enum, and use it instead of enum CodecType, which 
is deprecated and will be dropped at the next major bump.

Originally committed as revision 22735 to svn://svn.ffmpeg.org/ffmpeg/trunk
2010-03-30 23:30:55 +00:00

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/*
* Sony Playstation (PSX) STR File Demuxer
* Copyright (c) 2003 The ffmpeg Project
*
* 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
*/
/**
* @file libavformat/psxstr.c
* PSX STR file demuxer
* by Mike Melanson (melanson@pcisys.net)
* This module handles streams that have been ripped from Sony Playstation
* CD games. This demuxer can handle either raw STR files (which are just
* concatenations of raw compact disc sectors) or STR files with 0x2C-byte
* RIFF headers, followed by CD sectors.
*/
#include "libavutil/intreadwrite.h"
#include "avformat.h"
#define RIFF_TAG MKTAG('R', 'I', 'F', 'F')
#define CDXA_TAG MKTAG('C', 'D', 'X', 'A')
#define RAW_CD_SECTOR_SIZE 2352
#define RAW_CD_SECTOR_DATA_SIZE 2304
#define VIDEO_DATA_CHUNK_SIZE 0x7E0
#define VIDEO_DATA_HEADER_SIZE 0x38
#define RIFF_HEADER_SIZE 0x2C
#define CDXA_TYPE_MASK 0x0E
#define CDXA_TYPE_DATA 0x08
#define CDXA_TYPE_AUDIO 0x04
#define CDXA_TYPE_VIDEO 0x02
#define STR_MAGIC (0x80010160)
typedef struct StrChannel {
/* video parameters */
int video_stream_index;
AVPacket tmp_pkt;
/* audio parameters */
int audio_stream_index;
} StrChannel;
typedef struct StrDemuxContext {
/* a STR file can contain up to 32 channels of data */
StrChannel channels[32];
} StrDemuxContext;
static const char sync_header[12] = {0x00,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x00};
static int str_probe(AVProbeData *p)
{
uint8_t *sector= p->buf;
if (p->buf_size < RAW_CD_SECTOR_SIZE)
return 0;
if ((AV_RL32(&p->buf[0]) == RIFF_TAG) &&
(AV_RL32(&p->buf[8]) == CDXA_TAG)) {
/* RIFF header seen; skip 0x2C bytes */
sector += RIFF_HEADER_SIZE;
}
/* look for CD sync header (00, 0xFF x 10, 00) */
if (memcmp(sector,sync_header,sizeof(sync_header)))
return 0;
if(sector[0x11] >= 32)
return 0;
if( (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_VIDEO
&& (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_AUDIO
&& (sector[0x12] & CDXA_TYPE_MASK) != CDXA_TYPE_DATA)
return 0;
/* MPEG files (like those ripped from VCDs) can also look like this;
* only return half certainty */
return 50;
}
static int str_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
ByteIOContext *pb = s->pb;
StrDemuxContext *str = s->priv_data;
unsigned char sector[RAW_CD_SECTOR_SIZE];
int start;
int i;
/* skip over any RIFF header */
if (get_buffer(pb, sector, RIFF_HEADER_SIZE) != RIFF_HEADER_SIZE)
return AVERROR(EIO);
if (AV_RL32(&sector[0]) == RIFF_TAG)
start = RIFF_HEADER_SIZE;
else
start = 0;
url_fseek(pb, start, SEEK_SET);
for(i=0; i<32; i++){
str->channels[i].video_stream_index=
str->channels[i].audio_stream_index= -1;
}
s->ctx_flags |= AVFMTCTX_NOHEADER;
return 0;
}
static int str_read_packet(AVFormatContext *s,
AVPacket *ret_pkt)
{
ByteIOContext *pb = s->pb;
StrDemuxContext *str = s->priv_data;
unsigned char sector[RAW_CD_SECTOR_SIZE];
int channel;
AVPacket *pkt;
AVStream *st;
while (1) {
if (get_buffer(pb, sector, RAW_CD_SECTOR_SIZE) != RAW_CD_SECTOR_SIZE)
return AVERROR(EIO);
channel = sector[0x11];
if (channel >= 32)
return AVERROR_INVALIDDATA;
switch (sector[0x12] & CDXA_TYPE_MASK) {
case CDXA_TYPE_DATA:
case CDXA_TYPE_VIDEO:
{
int current_sector = AV_RL16(&sector[0x1C]);
int sector_count = AV_RL16(&sector[0x1E]);
int frame_size = AV_RL32(&sector[0x24]);
if(!( frame_size>=0
&& current_sector < sector_count
&& sector_count*VIDEO_DATA_CHUNK_SIZE >=frame_size)){
av_log(s, AV_LOG_ERROR, "Invalid parameters %d %d %d\n", current_sector, sector_count, frame_size);
break;
}
if(str->channels[channel].video_stream_index < 0){
/* allocate a new AVStream */
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
av_set_pts_info(st, 64, 1, 15);
str->channels[channel].video_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
st->codec->codec_id = CODEC_ID_MDEC;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->width = AV_RL16(&sector[0x28]);
st->codec->height = AV_RL16(&sector[0x2A]);
}
/* if this is the first sector of the frame, allocate a pkt */
pkt = &str->channels[channel].tmp_pkt;
if(pkt->size != sector_count*VIDEO_DATA_CHUNK_SIZE){
if(pkt->data)
av_log(s, AV_LOG_ERROR, "missmatching sector_count\n");
av_free_packet(pkt);
if (av_new_packet(pkt, sector_count*VIDEO_DATA_CHUNK_SIZE))
return AVERROR(EIO);
pkt->pos= url_ftell(pb) - RAW_CD_SECTOR_SIZE;
pkt->stream_index =
str->channels[channel].video_stream_index;
}
memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE,
sector + VIDEO_DATA_HEADER_SIZE,
VIDEO_DATA_CHUNK_SIZE);
if (current_sector == sector_count-1) {
pkt->size= frame_size;
*ret_pkt = *pkt;
pkt->data= NULL;
pkt->size= -1;
return 0;
}
}
break;
case CDXA_TYPE_AUDIO:
if(str->channels[channel].audio_stream_index < 0){
int fmt = sector[0x13];
/* allocate a new AVStream */
st = av_new_stream(s, 0);
if (!st)
return AVERROR(ENOMEM);
str->channels[channel].audio_stream_index = st->index;
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_ADPCM_XA;
st->codec->codec_tag = 0; /* no fourcc */
st->codec->channels = (fmt&1)?2:1;
st->codec->sample_rate = (fmt&4)?18900:37800;
// st->codec->bit_rate = 0; //FIXME;
st->codec->block_align = 128;
av_set_pts_info(st, 64, 128, st->codec->sample_rate);
}
pkt = ret_pkt;
if (av_new_packet(pkt, 2304))
return AVERROR(EIO);
memcpy(pkt->data,sector+24,2304);
pkt->stream_index =
str->channels[channel].audio_stream_index;
return 0;
break;
default:
av_log(s, AV_LOG_WARNING, "Unknown sector type %02X\n", sector[0x12]);
/* drop the sector and move on */
break;
}
if (url_feof(pb))
return AVERROR(EIO);
}
}
static int str_read_close(AVFormatContext *s)
{
StrDemuxContext *str = s->priv_data;
int i;
for(i=0; i<32; i++){
if(str->channels[i].tmp_pkt.data)
av_free_packet(&str->channels[i].tmp_pkt);
}
return 0;
}
AVInputFormat str_demuxer = {
"psxstr",
NULL_IF_CONFIG_SMALL("Sony Playstation STR format"),
sizeof(StrDemuxContext),
str_probe,
str_read_header,
str_read_packet,
str_read_close,
};
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