typedef struct {
int64_t riff_end;
int64_t movi_end;
+ int64_t fsize;
offset_t movi_list;
int index_loaded;
int is_odml;
DVDemuxContext* dv_demux;
} AVIContext;
+static const char avi_headers[][8] = {
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', ' ' },
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 'X' },
+ { 'R', 'I', 'F', 'F', 'A', 'V', 'I', 0x19},
+ { 'O', 'N', '2', ' ', 'O', 'N', '2', 'f' },
+ { 'R', 'I', 'F', 'F', 'A', 'M', 'V', ' ' },
+ { 0 }
+};
+
static int avi_load_index(AVFormatContext *s);
static int guess_ni_flag(AVFormatContext *s);
static int get_riff(AVIContext *avi, ByteIOContext *pb)
{
- uint32_t tag;
- /* check RIFF header */
- tag = get_le32(pb);
+ char header[8];
+ int i;
- if (tag != MKTAG('R', 'I', 'F', 'F'))
- return -1;
+ /* check RIFF header */
+ get_buffer(pb, header, 4);
avi->riff_end = get_le32(pb); /* RIFF chunk size */
avi->riff_end += url_ftell(pb); /* RIFF chunk end */
- tag = get_le32(pb);
- if (tag != MKTAG('A', 'V', 'I', ' ') && tag != MKTAG('A', 'V', 'I', 'X'))
+ get_buffer(pb, header+4, 4);
+
+ for(i=0; avi_headers[i][0]; i++)
+ if(!memcmp(header, avi_headers[i], 8))
+ break;
+ if(!avi_headers[i][0])
return -1;
+ if(header[7] == 0x19)
+ av_log(NULL, AV_LOG_INFO, "file has been generated with a totally broken muxer\n");
+
return 0;
}
uint32_t tag, tag1, handler;
int codec_type, stream_index, frame_period, bit_rate;
unsigned int size, nb_frames;
- int i, n;
+ int i;
AVStream *st;
AVIStream *ast = NULL;
char str_track[4];
+ int avih_width=0, avih_height=0;
+ int amv_file_format=0;
avi->stream_index= -1;
if (get_riff(avi, pb) < 0)
return -1;
+ avi->fsize = url_fsize(pb);
+ if(avi->fsize<=0)
+ avi->fsize= avi->riff_end;
+
/* first list tag */
stream_index = -1;
codec_type = -1;
avi->is_odml = 1;
url_fskip(pb, size + (size & 1));
break;
+ case MKTAG('a', 'm', 'v', 'h'):
+ amv_file_format=1;
case MKTAG('a', 'v', 'i', 'h'):
/* avi header */
/* using frame_period is bad idea */
avi->non_interleaved |= get_le32(pb) & AVIF_MUSTUSEINDEX;
url_fskip(pb, 2 * 4);
- n = get_le32(pb);
- for(i=0;i<n;i++) {
- AVIStream *ast;
- st = av_new_stream(s, i);
+ get_le32(pb);
+ get_le32(pb);
+ avih_width=get_le32(pb);
+ avih_height=get_le32(pb);
+
+ url_fskip(pb, size - 10 * 4);
+ break;
+ case MKTAG('s', 't', 'r', 'h'):
+ /* stream header */
+
+ tag1 = get_le32(pb);
+ handler = get_le32(pb); /* codec tag */
+
+ if(tag1 == MKTAG('p', 'a', 'd', 's')){
+ url_fskip(pb, size - 8);
+ break;
+ }else{
+ stream_index++;
+ st = av_new_stream(s, stream_index);
if (!st)
goto fail;
goto fail;
st->priv_data = ast;
}
- url_fskip(pb, size - 7 * 4);
- break;
- case MKTAG('s', 't', 'r', 'h'):
- /* stream header */
- stream_index++;
- tag1 = get_le32(pb);
- handler = get_le32(pb); /* codec tag */
+ if(amv_file_format)
+ tag1 = stream_index ? MKTAG('a','u','d','s') : MKTAG('v','i','d','s');
+
#ifdef DEBUG
print_tag("strh", tag1, -1);
#endif
break;
}
- if (stream_index >= s->nb_streams) {
- url_fskip(pb, size - 8);
- /* ignore padding stream */
- if (tag1 == MKTAG('p', 'a', 'd', 's'))
- stream_index--;
- break;
- }
- st = s->streams[stream_index];
- ast = st->priv_data;
+ assert(stream_index < s->nb_streams);
st->codec->stream_codec_tag= handler;
get_le32(pb); /* flags */
//FIXME
codec_type = CODEC_TYPE_DATA; //CODEC_TYPE_SUB ? FIXME
break;
- case MKTAG('p', 'a', 'd', 's'):
- codec_type = CODEC_TYPE_UNKNOWN;
- stream_index--;
- break;
default:
av_log(s, AV_LOG_ERROR, "unknown stream type %X\n", tag1);
goto fail;
break;
case MKTAG('s', 't', 'r', 'f'):
/* stream header */
- if (stream_index >= s->nb_streams || avi->dv_demux) {
+ if (stream_index >= (unsigned)s->nb_streams || avi->dv_demux) {
url_fskip(pb, size);
} else {
st = s->streams[stream_index];
switch(codec_type) {
case CODEC_TYPE_VIDEO:
+ if(amv_file_format){
+ st->codec->width=avih_width;
+ st->codec->height=avih_height;
+ st->codec->codec_type = CODEC_TYPE_VIDEO;
+ st->codec->codec_id = CODEC_ID_AMV;
+ url_fskip(pb, size);
+ break;
+ }
get_le32(pb); /* size */
st->codec->width = get_le32(pb);
st->codec->height = get_le32(pb);
get_le32(pb); /* ClrUsed */
get_le32(pb); /* ClrImportant */
+ if (tag1 == MKTAG('D', 'X', 'S', 'B')) {
+ st->codec->codec_type = CODEC_TYPE_SUBTITLE;
+ st->codec->codec_tag = tag1;
+ st->codec->codec_id = CODEC_ID_XSUB;
+ break;
+ }
+
if(size > 10*4 && size<(1<<30)){
st->codec->extradata_size= size - 10*4;
st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_tag = tag1;
st->codec->codec_id = codec_get_id(codec_bmp_tags, tag1);
- st->need_parsing = 2; //only parse headers dont do slower repacketization, this is needed to get the pict type which is needed for generating correct pts
+ st->need_parsing = AVSTREAM_PARSE_HEADERS; // this is needed to get the pict type which is needed for generating correct pts
// url_fskip(pb, size - 5 * 4);
break;
case CODEC_TYPE_AUDIO:
if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
url_fskip(pb, 1);
/* Force parsing as several audio frames can be in
- * one packet. */
- st->need_parsing = 1;
+ * one packet and timestamps refer to packet start*/
+ st->need_parsing = AVSTREAM_PARSE_TIMESTAMPS;
/* ADTS header is in extradata, AAC without header must be stored as exact frames, parser not needed and it will fail */
if (st->codec->codec_id == CODEC_ID_AAC && st->codec->extradata_size)
- st->need_parsing = 0;
+ st->need_parsing = AVSTREAM_PARSE_NONE;
/* AVI files with Xan DPCM audio (wrongly) declare PCM
* audio in the header but have Axan as stream_code_tag. */
if (st->codec->stream_codec_tag == ff_get_fourcc("Axan")){
st->codec->codec_id = CODEC_ID_XAN_DPCM;
st->codec->codec_tag = 0;
}
+ if (amv_file_format)
+ st->codec->codec_id = CODEC_ID_ADPCM_IMA_AMV;
break;
default:
st->codec->codec_type = CODEC_TYPE_DATA;
sscanf(str_track, "%d", &s->track);
break;
default:
+ if(size > 1000000){
+ av_log(s, AV_LOG_ERROR, "well something went wrong during header parsing, "
+ "ill ignore it and try to continue anyway\n");
+ avi->movi_list = url_ftell(pb) - 4;
+ avi->movi_end = url_fsize(pb);
+ goto end_of_header;
+ }
/* skip tag */
size += (size & 1);
url_fskip(pb, size);
pkt->stream_index = avi->stream_index;
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- AVIndexEntry *e;
- int index;
+ AVIndexEntry *e;
+ int index;
assert(st->index_entries);
- index= av_index_search_timestamp(st, pkt->dts, 0);
- e= &st->index_entries[index];
+ index= av_index_search_timestamp(st, pkt->dts, 0);
+ e= &st->index_entries[index];
- if(index >= 0 && e->timestamp == ast->frame_offset){
- if (e->flags & AVINDEX_KEYFRAME)
- pkt->flags |= PKT_FLAG_KEY;
- }
+ if(index >= 0 && e->timestamp == ast->frame_offset){
+ if (e->flags & AVINDEX_KEYFRAME)
+ pkt->flags |= PKT_FLAG_KEY;
+ }
} else {
pkt->flags |= PKT_FLAG_KEY;
}
for(i=sync=url_ftell(pb); !url_feof(pb); i++) {
int j;
- if (i >= avi->movi_end) {
- if (avi->is_odml) {
- url_fskip(pb, avi->riff_end - i);
- avi->riff_end = avi->movi_end = url_fsize(pb);
- } else
- break;
- }
-
for(j=0; j<7; j++)
d[j]= d[j+1];
d[7]= get_byte(pb);
n= 100; //invalid stream id
}
//av_log(NULL, AV_LOG_DEBUG, "%X %X %X %X %X %X %X %X %"PRId64" %d %d\n", d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7], i, size, n);
- if(i + size > avi->movi_end || d[0]<0)
+ if(i + size > avi->fsize || d[0]<0)
continue;
//parse ix##
if( (d[0] == 'i' && d[1] == 'x' && n < s->nb_streams)
//parse JUNK
- ||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')){
+ ||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')
+ ||(d[0] == 'i' && d[1] == 'd' && d[2] == 'x' && d[3] == '1')){
url_fskip(pb, size);
//av_log(NULL, AV_LOG_DEBUG, "SKIP\n");
goto resync;
if ( d[0] >= '0' && d[0] <= '9'
&& d[1] >= '0' && d[1] <= '9'
&& ((d[2] == 'p' && d[3] == 'c'))
- && n < s->nb_streams && i + size <= avi->movi_end) {
+ && n < s->nb_streams && i + size <= avi->fsize) {
AVStream *st;
int first, clr, flags, k, p;
static int avi_probe(AVProbeData *p)
{
+ int i;
+
/* check file header */
- if (p->buf_size <= 32)
- return 0;
- if (p->buf[0] == 'R' && p->buf[1] == 'I' &&
- p->buf[2] == 'F' && p->buf[3] == 'F' &&
- p->buf[8] == 'A' && p->buf[9] == 'V' &&
- p->buf[10] == 'I' && p->buf[11] == ' ')
- return AVPROBE_SCORE_MAX;
- else
- return 0;
+ for(i=0; avi_headers[i][0]; i++)
+ if(!memcmp(p->buf , avi_headers[i] , 4) &&
+ !memcmp(p->buf+8, avi_headers[i]+4, 4))
+ return AVPROBE_SCORE_MAX;
+
+ return 0;
}
AVInputFormat avi_demuxer = {
projects / ffmpeg / blobdiff