*/
/**
- * @file psxstr.c
+ * @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
* RIFF headers, followed by CD sectors.
*/
+#include "libavutil/intreadwrite.h"
#include "avformat.h"
-//#define PRINTSTUFF
-
#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_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 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 STR_MAGIC (0x80010160)
typedef struct StrChannel {
-
- int type;
-#define STR_AUDIO 0
-#define STR_VIDEO 1
-
/* video parameters */
- int width;
- int height;
int video_stream_index;
+ AVPacket tmp_pkt;
/* audio parameters */
- int sample_rate;
- int channels;
- int bits;
int audio_stream_index;
} StrChannel;
/* a STR file can contain up to 32 channels of data */
StrChannel channels[32];
-
- /* only decode the first audio and video channels encountered */
- int video_channel;
- int audio_channel;
-
- int64_t pts;
-
- unsigned char *video_chunk;
- AVPacket tmp_pkt;
} 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)
{
- int start;
+ uint8_t *sector= p->buf;
- /* need at least 0x38 bytes to validate */
- if (p->buf_size < 0x38)
+ 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 */
- start = RIFF_HEADER_SIZE;
- } else
- start = 0;
+ sector += RIFF_HEADER_SIZE;
+ }
/* look for CD sync header (00, 0xFF x 10, 00) */
- if (memcmp(p->buf+start,sync_header,sizeof(sync_header)))
+ 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;
return 50;
}
-#if 0
-static void dump(unsigned char *buf,size_t len)
-{
- int i;
- for(i=0;i<len;i++) {
- if ((i&15)==0) av_log(NULL, AV_LOG_DEBUG, "%04x ",i);
- av_log(NULL, AV_LOG_DEBUG, "%02x ",buf[i]);
- if ((i&15)==15) av_log(NULL, AV_LOG_DEBUG, "\n");
- }
- av_log(NULL, AV_LOG_DEBUG, "\n");
-}
-#endif
-
static int str_read_header(AVFormatContext *s,
AVFormatParameters *ap)
{
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
StrDemuxContext *str = s->priv_data;
- AVStream *st;
unsigned char sector[RAW_CD_SECTOR_SIZE];
int start;
int i;
- int channel;
-
- /* initialize context members */
- str->pts = 0;
- str->audio_channel = -1; /* assume to audio or video */
- str->video_channel = -1;
- str->video_chunk = NULL;
-
/* skip over any RIFF header */
if (get_buffer(pb, sector, RIFF_HEADER_SIZE) != RIFF_HEADER_SIZE)
- return AVERROR_IO;
+ return AVERROR(EIO);
if (AV_RL32(§or[0]) == RIFF_TAG)
start = RIFF_HEADER_SIZE;
else
url_fseek(pb, start, SEEK_SET);
- /* check through the first 32 sectors for individual channels */
- for (i = 0; i < 32; i++) {
- if (get_buffer(pb, sector, RAW_CD_SECTOR_SIZE) != RAW_CD_SECTOR_SIZE)
- return AVERROR_IO;
-
-//printf("%02x %02x %02x %02x\n",sector[0x10],sector[0x11],sector[0x12],sector[0x13]);
-
- channel = sector[0x11];
- if (channel >= 32)
- return AVERROR_INVALIDDATA;
-
- switch (sector[0x12] & CDXA_TYPE_MASK) {
-
- case CDXA_TYPE_DATA:
- case CDXA_TYPE_VIDEO:
- /* check if this channel gets to be the dominant video channel */
- if (str->video_channel == -1) {
- /* qualify the magic number */
- if (AV_RL32(§or[0x18]) != STR_MAGIC)
- break;
- str->video_channel = channel;
- str->channels[channel].type = STR_VIDEO;
- str->channels[channel].width = AV_RL16(§or[0x28]);
- str->channels[channel].height = AV_RL16(§or[0x2A]);
-
- /* allocate a new AVStream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 64, 1, 15);
-
- str->channels[channel].video_stream_index = st->index;
-
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- st->codec->codec_id = CODEC_ID_MDEC;
- st->codec->codec_tag = 0; /* no fourcc */
- st->codec->width = str->channels[channel].width;
- st->codec->height = str->channels[channel].height;
- }
- break;
-
- case CDXA_TYPE_AUDIO:
- /* check if this channel gets to be the dominant audio channel */
- if (str->audio_channel == -1) {
- int fmt;
- str->audio_channel = channel;
- str->channels[channel].type = STR_AUDIO;
- str->channels[channel].channels =
- (sector[0x13] & 0x01) ? 2 : 1;
- str->channels[channel].sample_rate =
- (sector[0x13] & 0x04) ? 18900 : 37800;
- str->channels[channel].bits =
- (sector[0x13] & 0x10) ? 8 : 4;
-
- /* allocate a new AVStream */
- st = av_new_stream(s, 0);
- if (!st)
- return AVERROR_NOMEM;
- av_set_pts_info(st, 64, 128, str->channels[channel].sample_rate);
-
- str->channels[channel].audio_stream_index = st->index;
-
- fmt = sector[0x13];
- st->codec->codec_type = CODEC_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;
- }
- break;
-
- default:
- /* ignore */
- break;
- }
+ for(i=0; i<32; i++){
+ str->channels[i].video_stream_index=
+ str->channels[i].audio_stream_index= -1;
}
-if (str->video_channel != -1)
- av_log (s, AV_LOG_DEBUG, " video channel = %d, %d x %d %d\n", str->video_channel,
- str->channels[str->video_channel].width,
- str->channels[str->video_channel].height,str->channels[str->video_channel].video_stream_index);
-if (str->audio_channel != -1)
- av_log (s, AV_LOG_DEBUG, " audio channel = %d, %d Hz, %d channels, %d bits/sample %d\n",
- str->audio_channel,
- str->channels[str->audio_channel].sample_rate,
- str->channels[str->audio_channel].channels,
- str->channels[str->audio_channel].bits,str->channels[str->audio_channel].audio_stream_index);
-
- /* back to the start */
- url_fseek(pb, start, SEEK_SET);
+ s->ctx_flags |= AVFMTCTX_NOHEADER;
return 0;
}
static int str_read_packet(AVFormatContext *s,
AVPacket *ret_pkt)
{
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
StrDemuxContext *str = s->priv_data;
unsigned char sector[RAW_CD_SECTOR_SIZE];
int channel;
- int packet_read = 0;
- int ret = 0;
AVPacket *pkt;
+ AVStream *st;
- while (!packet_read) {
+ while (1) {
if (get_buffer(pb, sector, RAW_CD_SECTOR_SIZE) != RAW_CD_SECTOR_SIZE)
- return AVERROR_IO;
+ return AVERROR(EIO);
channel = sector[0x11];
if (channel >= 32)
case CDXA_TYPE_DATA:
case CDXA_TYPE_VIDEO:
- /* check if this the video channel we care about */
- if (channel == str->video_channel) {
+ {
int current_sector = AV_RL16(§or[0x1C]);
int sector_count = AV_RL16(§or[0x1E]);
int frame_size = AV_RL32(§or[0x24]);
- int bytes_to_copy;
-// printf("%d %d %d\n",current_sector,sector_count,frame_size);
+
+ 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 = CODEC_TYPE_VIDEO;
+ st->codec->codec_id = CODEC_ID_MDEC;
+ st->codec->codec_tag = 0; /* no fourcc */
+ st->codec->width = AV_RL16(§or[0x28]);
+ st->codec->height = AV_RL16(§or[0x2A]);
+ }
+
/* if this is the first sector of the frame, allocate a pkt */
- pkt = &str->tmp_pkt;
- if (current_sector == 0) {
- if (av_new_packet(pkt, frame_size))
- return AVERROR_IO;
+ 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;
- // pkt->pts = str->pts;
-
- /* if there is no audio, adjust the pts after every video
- * frame; assume 15 fps */
- if (str->audio_channel != -1)
- str->pts += (90000 / 15);
}
- /* load all the constituent chunks in the video packet */
- bytes_to_copy = frame_size - current_sector*VIDEO_DATA_CHUNK_SIZE;
- if (bytes_to_copy>0) {
- if (bytes_to_copy>VIDEO_DATA_CHUNK_SIZE) bytes_to_copy=VIDEO_DATA_CHUNK_SIZE;
- memcpy(pkt->data + current_sector*VIDEO_DATA_CHUNK_SIZE,
- sector + VIDEO_DATA_HEADER_SIZE, bytes_to_copy);
- }
+ 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:
-#ifdef PRINTSTUFF
-printf (" dropping audio sector\n");
-#endif
-#if 1
- /* check if this the video channel we care about */
- if (channel == str->audio_channel) {
- pkt = ret_pkt;
- if (av_new_packet(pkt, 2304))
- return AVERROR_IO;
- memcpy(pkt->data,sector+24,2304);
-
- pkt->stream_index =
- str->channels[channel].audio_stream_index;
- //pkt->pts = str->pts;
- return 0;
+ 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 = CODEC_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);
}
-#endif
+ 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 */
-#ifdef PRINTSTUFF
-printf (" dropping other sector\n");
-#endif
break;
}
if (url_feof(pb))
- return AVERROR_IO;
+ return AVERROR(EIO);
}
-
- return ret;
}
static int str_read_close(AVFormatContext *s)
{
StrDemuxContext *str = s->priv_data;
-
- av_free(str->video_chunk);
+ 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",
- "Sony Playstation STR format",
+ NULL_IF_CONFIG_SMALL("Sony Playstation STR format"),
sizeof(StrDemuxContext),
str_probe,
str_read_header,
projects / frescor / ffmpeg.git / blobdiff