* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
-#include "avi.h"
+#include "riff.h"
#include "mpegaudio.h"
#include "asf.h"
asf->packet_size = asf->hdr.max_pktsize;
asf->nb_packets = asf->hdr.packets_count;
} else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
- int type, total_size, type_specific_size, sizeX;
+ int type, type_specific_size, sizeX;
+ uint64_t total_size;
unsigned int tag1;
int64_t pos1, pos2;
int test_for_ext_stream_audio;
pos2 = url_ftell(pb);
url_fskip(pb, gsize - (pos2 - pos1 + 24));
} else if (!memcmp(&g, &data_header, sizeof(GUID))) {
+ asf->data_object_offset = url_ftell(pb);
+ if (gsize != (uint64_t)-1 && gsize >= 24) {
+ asf->data_object_size = gsize - 24;
+ } else {
+ asf->data_object_size = (uint64_t)-1;
+ }
break;
} else if (!memcmp(&g, &comment_header, sizeof(GUID))) {
int len1, len2, len3, len4, len5;
desc_count = get_le16(pb);
for(i=0;i<desc_count;i++)
{
- int name_len,value_type,value_len,value_num = 0;
+ int name_len,value_type,value_len;
+ uint64_t value_num = 0;
char *name, *value;
name_len = get_le16(pb);
} else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
int ext_len, payload_ext_ct, stream_ct;
uint32_t ext_d;
- int64_t pos_ex_st, pos_curr;
+ int64_t pos_ex_st;
pos_ex_st = url_ftell(pb);
get_le64(pb);
/* fail safe */
url_fskip(pb, ret);
asf->packet_pos= url_ftell(&s->pb);
+ if (asf->data_object_size != (uint64_t)-1 &&
+ (asf->packet_pos - asf->data_object_offset >= asf->data_object_size))
+ return AVERROR_IO; /* Do not exceed the size of the data object */
ret = asf_get_packet(s);
//printf("READ ASF PACKET %d r:%d c:%d\n", ret, asf->packet_size_left, pc++);
if (ret < 0 || url_feof(pb))
for(i=0;i<s->nb_streams;i++) {
AVStream *st = s->streams[i];
av_free(st->priv_data);
- av_free(st->codec->extradata);
av_free(st->codec->palctrl);
}
return 0;
return AV_NOPTS_VALUE;
}
- pts= pkt->pts * 1000 / AV_TIME_BASE;
+ pts= pkt->pts;
av_free_packet(pkt);
if(pkt->flags&PKT_FLAG_KEY){
assert((asf_st->packet_pos - s->data_offset) % asf->packet_size == 0);
pos= asf_st->packet_pos;
- av_add_index_entry(s->streams[i], pos, pts, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
+ av_add_index_entry(s->streams[i], pos, pts, pkt->size, pos - start_pos[i] + 1, AVINDEX_KEYFRAME);
start_pos[i]= asf_st->packet_pos + 1;
if(pkt->stream_index == stream_index)
return pts;
}
+static void asf_build_simple_index(AVFormatContext *s, int stream_index)
+{
+ GUID g;
+ ASFContext *asf = s->priv_data;
+ int64_t gsize, itime;
+ int64_t pos, current_pos, index_pts;
+ int i;
+ int pct,ict;
+
+ current_pos = url_ftell(&s->pb);
+
+ url_fseek(&s->pb, asf->data_object_offset + asf->data_object_size, SEEK_SET);
+ get_guid(&s->pb, &g);
+ if (!memcmp(&g, &index_guid, sizeof(GUID))) {
+ gsize = get_le64(&s->pb);
+ get_guid(&s->pb, &g);
+ itime=get_le64(&s->pb);
+ pct=get_le32(&s->pb);
+ ict=get_le32(&s->pb);
+ av_log(NULL, AV_LOG_DEBUG, "itime:0x%Lx, pct:%d, ict:%d\n",itime,pct,ict);
+
+ for (i=0;i<ict;i++){
+ int pktnum=get_le32(&s->pb);
+ int pktct =get_le16(&s->pb);
+ av_log(NULL, AV_LOG_DEBUG, "pktnum:%d, pktct:%d\n", pktnum, pktct);
+
+ pos=s->data_offset + asf->packet_size*(int64_t)pktnum;
+ index_pts=av_rescale(itime, i, 10000);
+
+ av_add_index_entry(s->streams[stream_index], pos, index_pts, asf->packet_size, 0, AVINDEX_KEYFRAME);
+ }
+ asf->index_read= 1;
+ }
+ url_fseek(&s->pb, current_pos, SEEK_SET);
+}
+
static int asf_read_seek(AVFormatContext *s, int stream_index, int64_t pts, int flags)
{
ASFContext *asf = s->priv_data;
+ AVStream *st = s->streams[stream_index];
+ int64_t pos;
+ int index;
if (asf->packet_size <= 0)
return -1;
- if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
- return -1;
-
+ if (!asf->index_read)
+ asf_build_simple_index(s, stream_index);
+
+ if(!(asf->index_read && st->index_entries)){
+ if(av_seek_frame_binary(s, stream_index, pts, flags)<0)
+ return -1;
+ }else{
+ index= av_index_search_timestamp(st, pts, flags);
+ if(index<0)
+ return -1;
+
+ /* find the position */
+ pos = st->index_entries[index].pos;
+ pts = st->index_entries[index].timestamp;
+
+ // various attempts to find key frame have failed so far
+ // asf_reset_header(s);
+ // url_fseek(&s->pb, pos, SEEK_SET);
+ // key_pos = pos;
+ // for(i=0;i<16;i++){
+ // pos = url_ftell(&s->pb);
+ // if (av_read_frame(s, &pkt) < 0){
+ // av_log(s, AV_LOG_INFO, "seek failed\n");
+ // return -1;
+ // }
+ // asf_st = s->streams[stream_index]->priv_data;
+ // pos += st->parser->frame_offset;
+ //
+ // if (pkt.size > b) {
+ // b = pkt.size;
+ // key_pos = pos;
+ // }
+ //
+ // av_free_packet(&pkt);
+ // }
+
+ /* do the seek */
+ av_log(NULL, AV_LOG_DEBUG, "SEEKTO: %Ld\n", pos);
+ url_fseek(&s->pb, pos, SEEK_SET);
+ }
asf_reset_header(s);
return 0;
}
-static AVInputFormat asf_iformat = {
+AVInputFormat asf_demuxer = {
"asf",
"asf format",
sizeof(ASFContext),
asf_read_seek,
asf_read_pts,
};
-
-#ifdef CONFIG_MUXERS
- extern AVOutputFormat asf_oformat;
- extern AVOutputFormat asf_stream_oformat;
-#endif //CONFIG_MUXERS
-
-int asf_init(void)
-{
- av_register_input_format(&asf_iformat);
-#ifdef CONFIG_MUXERS
- av_register_output_format(&asf_oformat);
- av_register_output_format(&asf_stream_oformat);
-#endif //CONFIG_MUXERS
- return 0;
-}
projects / ffmpeg / blobdiff