/*
- * ASF compatible decoder.
+ * ASF compatible demuxer
* Copyright (c) 2000, 2001 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
+ * 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 "riff.h"
#include "mpegaudio.h"
#include "asf.h"
+#include "common.h"
#undef NDEBUG
#include <assert.h>
// Fix Me! FRAME_HEADER_SIZE may be different.
static const GUID index_guid = {
- 0x33000890, 0xe5b1, 0x11cf, { 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb },
+ 0x90, 0x08, 0x00, 0x33, 0xb1, 0xe5, 0xcf, 0x11, 0x89, 0xf4, 0x00, 0xa0, 0xc9, 0x03, 0x49, 0xcb
};
/**********************************/
else PRINT_IF_GUID(g, ext_stream_audio_stream);
else
printf("(GUID: unknown) ");
- printf("0x%08x, 0x%04x, 0x%04x, {", g->v1, g->v2, g->v3);
- for(i=0;i<8;i++)
- printf(" 0x%02x,", g->v4[i]);
+ for(i=0;i<16;i++)
+ printf(" 0x%02x,", (*g)[i]);
printf("}\n");
}
#undef PRINT_IF_GUID
static void get_guid(ByteIOContext *s, GUID *g)
{
- int i;
-
- g->v1 = get_le32(s);
- g->v2 = get_le16(s);
- g->v3 = get_le16(s);
- for(i=0;i<8;i++)
- g->v4[i] = get_byte(s);
+ assert(sizeof(*g) == 16);
+ get_buffer(s, g, sizeof(*g));
}
#if 0
static void get_str16_nolen(ByteIOContext *pb, int len, char *buf, int buf_size)
{
- int c;
- char *q;
-
- q = buf;
- while (len > 0) {
- c = get_le16(pb);
- if ((q - buf) < buf_size - 1)
- *q++ = c;
- len-=2;
+ char* q = buf;
+ len /= 2;
+ while (len--) {
+ uint8_t tmp;
+ PUT_UTF8(get_le16(pb), tmp, if (q - buf < buf_size - 1) *q++ = tmp;)
}
*q = '\0';
}
static int asf_probe(AVProbeData *pd)
{
- GUID g;
- const unsigned char *p;
- int i;
-
/* check file header */
if (pd->buf_size <= 32)
return 0;
- p = pd->buf;
- g.v1 = p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
- p += 4;
- g.v2 = p[0] | (p[1] << 8);
- p += 2;
- g.v3 = p[0] | (p[1] << 8);
- p += 2;
- for(i=0;i<8;i++)
- g.v4[i] = *p++;
-
- if (!memcmp(&g, &asf_header, sizeof(GUID)))
+
+ if (!memcmp(pd->buf, &asf_header, sizeof(GUID)))
return AVPROBE_SCORE_MAX;
else
return 0;
get_guid(pb, &g);
gsize = get_le64(pb);
#ifdef DEBUG
- printf("%08Lx: ", url_ftell(pb) - 24);
+ printf("%08"PRIx64": ", url_ftell(pb) - 24);
print_guid(&g);
- printf(" size=0x%Lx\n", gsize);
+ printf(" size=0x%"PRIx64"\n", gsize);
#endif
if (gsize < 24)
goto fail;
get_guid(pb, &asf->hdr.guid);
asf->hdr.file_size = get_le64(pb);
asf->hdr.create_time = get_le64(pb);
- asf->hdr.packets_count = get_le64(pb);
+ asf->nb_packets = get_le64(pb);
asf->hdr.send_time = get_le64(pb);
asf->hdr.play_time = get_le64(pb);
asf->hdr.preroll = get_le32(pb);
asf->hdr.max_pktsize = get_le32(pb);
asf->hdr.max_bitrate = get_le32(pb);
asf->packet_size = asf->hdr.max_pktsize;
- asf->nb_packets = asf->hdr.packets_count;
} else if (!memcmp(&g, &stream_header, sizeof(GUID))) {
int type, type_specific_size, sizeX;
uint64_t total_size;
goto fail;
st->priv_data = asf_st;
st->start_time = asf->hdr.preroll;
- st->duration = asf->hdr.send_time /
- (10000000 / 1000) - st->start_time;
+ if(!(asf->hdr.flags & 0x01)) { // if we aren't streaming...
+ st->duration = asf->hdr.send_time /
+ (10000000 / 1000) - st->start_time;
+ }
get_guid(pb, &g);
test_for_ext_stream_audio = 0;
asf_st->ds_span = get_byte(pb);
asf_st->ds_packet_size = get_le16(pb);
asf_st->ds_chunk_size = get_le16(pb);
- asf_st->ds_data_size = get_le16(pb);
- asf_st->ds_silence_data = get_byte(pb);
+ get_le16(pb); //ds_data_size
+ get_byte(pb); //ds_silence_data
}
//printf("Descrambling: ps:%d cs:%d ds:%d s:%d sd:%d\n",
// asf_st->ds_packet_size, asf_st->ds_chunk_size,
// asf_st->ds_data_size, asf_st->ds_span, asf_st->ds_silence_data);
if (asf_st->ds_span > 1) {
if (!asf_st->ds_chunk_size
- || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1))
+ || (asf_st->ds_packet_size/asf_st->ds_chunk_size <= 1)
+ || asf_st->ds_packet_size % asf_st->ds_chunk_size)
asf_st->ds_span = 0; // disable descrambling
}
switch (st->codec->codec_id) {
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) {
+ // if not streaming, gsize is not unlimited (how?), and there is enough space in the file..
+ if (!(asf->hdr.flags & 0x01) && gsize != (uint64_t)-1 && gsize >= 24) {
asf->data_object_size = gsize - 24;
} else {
asf->data_object_size = (uint64_t)-1;
len3 = get_le16(pb);
len4 = get_le16(pb);
len5 = get_le16(pb);
- get_str16_nolen(pb, len1, s->title, sizeof(s->title));
- get_str16_nolen(pb, len2, s->author, sizeof(s->author));
+ get_str16_nolen(pb, len1, s->title , sizeof(s->title));
+ get_str16_nolen(pb, len2, s->author , sizeof(s->author));
get_str16_nolen(pb, len3, s->copyright, sizeof(s->copyright));
- get_str16_nolen(pb, len4, s->comment, sizeof(s->comment));
+ get_str16_nolen(pb, len4, s->comment , sizeof(s->comment));
url_fskip(pb, len5);
} else if (!memcmp(&g, &extended_content_header, sizeof(GUID))) {
int desc_count, i;
desc_count = get_le16(pb);
for(i=0;i<desc_count;i++)
{
- int name_len,value_type,value_len,value_num = 0;
- char *name, *value;
+ int name_len,value_type,value_len;
+ uint64_t value_num = 0;
+ char name[1024];
name_len = get_le16(pb);
- name = (char *)av_mallocz(name_len);
- get_str16_nolen(pb, name_len, name, name_len);
+ get_str16_nolen(pb, name_len, name, sizeof(name));
value_type = get_le16(pb);
value_len = get_le16(pb);
if ((value_type == 0) || (value_type == 1)) // unicode or byte
{
- value = (char *)av_mallocz(value_len);
- get_str16_nolen(pb, value_len, value, value_len);
- if (strcmp(name,"WM/AlbumTitle")==0) { pstrcpy(s->album, sizeof(s->album), value); }
- av_free(value);
+ if (!strcmp(name,"WM/AlbumTitle")) get_str16_nolen(pb, value_len, s->album, sizeof(s->album));
+ else if(!strcmp(name,"WM/Genre" )) get_str16_nolen(pb, value_len, s->genre, sizeof(s->genre));
+ else url_fskip(pb, value_len);
}
if ((value_type >= 2) && (value_type <= 5)) // boolean or DWORD or QWORD or WORD
{
if (value_type==3) value_num = get_le32(pb);
if (value_type==4) value_num = get_le64(pb);
if (value_type==5) value_num = get_le16(pb);
- if (strcmp(name,"WM/Track")==0) s->track = value_num + 1;
- if (strcmp(name,"WM/TrackNumber")==0) s->track = value_num;
+ if (!strcmp(name,"WM/Track" )) s->track = value_num + 1;
+ if (!strcmp(name,"WM/TrackNumber")) s->track = value_num;
}
- av_free(name);
}
} else if (!memcmp(&g, &ext_stream_header, sizeof(GUID))) {
int ext_len, payload_ext_ct, stream_ct;
int rsize = 9;
int c;
- assert((url_ftell(&s->pb) - s->data_offset) % asf->packet_size == 0);
-
c = get_byte(pb);
if (c != 0x82) {
if (!url_feof(pb))
rsize+=2;
/* }else{
if (!url_feof(pb))
- printf("ff asf bad header %x at:%lld\n", c, url_ftell(pb));
+ printf("ff asf bad header %x at:%"PRId64"\n", c, url_ftell(pb));
return AVERROR_IO;*/
}
DO_2BITS(asf->packet_flags >> 1, padsize, 0); // sequence ignored
DO_2BITS(asf->packet_flags >> 3, padsize, 0); // padding length
+ //the following checks prevent overflows and infinite loops
+ if(packet_length >= (1U<<29)){
+ av_log(s, AV_LOG_ERROR, "invalid packet_length %d at:%"PRId64"\n", packet_length, url_ftell(pb));
+ return 0; // FIXME this should be -1
+ }
+ if(padsize >= (1U<<29)){
+ av_log(s, AV_LOG_ERROR, "invalid padsize %d at:%"PRId64"\n", padsize, url_ftell(pb));
+ return 0; // FIXME this should be -1
+ }
+
asf->packet_timestamp = get_le32(pb);
get_le16(pb); /* duration */
// rsize has at least 11 bytes which have to be present
return 0;
}
+/**
+ *
+ * @return <0 if error
+ */
+static int asf_read_frame_header(AVFormatContext *s){
+ ASFContext *asf = s->priv_data;
+ ByteIOContext *pb = &s->pb;
+ int rsize = 1;
+ int num = get_byte(pb);
+
+ asf->packet_segments--;
+ asf->packet_key_frame = num >> 7;
+ asf->stream_index = asf->asfid2avid[num & 0x7f];
+ // sequence should be ignored!
+ DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
+ DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
+ DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
+//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
+ if (asf->packet_replic_size >= 8) {
+ asf->packet_obj_size = get_le32(pb);
+ if(asf->packet_obj_size >= (1<<24) || asf->packet_obj_size <= 0){
+ av_log(s, AV_LOG_ERROR, "packet_obj_size invalid\n");
+ return -1;
+ }
+ asf->packet_frag_timestamp = get_le32(pb); // timestamp
+ url_fskip(pb, asf->packet_replic_size - 8);
+ rsize += asf->packet_replic_size; // FIXME - check validity
+ } else if (asf->packet_replic_size==1){
+ // multipacket - frag_offset is begining timestamp
+ asf->packet_time_start = asf->packet_frag_offset;
+ asf->packet_frag_offset = 0;
+ asf->packet_frag_timestamp = asf->packet_timestamp;
+
+ asf->packet_time_delta = get_byte(pb);
+ rsize++;
+ }else if(asf->packet_replic_size!=0){
+ av_log(s, AV_LOG_ERROR, "unexpected packet_replic_size of %d\n", asf->packet_replic_size);
+ return -1;
+ }
+ if (asf->packet_flags & 0x01) {
+ DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
+ //printf("Fragsize %d\n", asf->packet_frag_size);
+ } else {
+ asf->packet_frag_size = asf->packet_size_left - rsize;
+ //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
+ }
+ if (asf->packet_replic_size == 1) {
+ asf->packet_multi_size = asf->packet_frag_size;
+ if (asf->packet_multi_size > asf->packet_size_left)
+ return -1;
+ }
+ asf->packet_size_left -= rsize;
+ //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
+
+ return 0;
+}
+
static int asf_read_packet(AVFormatContext *s, AVPacket *pkt)
{
ASFContext *asf = s->priv_data;
ByteIOContext *pb = &s->pb;
//static int pc = 0;
for (;;) {
- int rsize = 0;
if (asf->packet_size_left < FRAME_HEADER_SIZE
|| asf->packet_segments < 1) {
//asf->packet_size_left <= asf->packet_padsize) {
int ret = asf->packet_size_left + asf->packet_padsize;
- //printf("PacketLeftSize:%d Pad:%d Pos:%Ld\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
- if((url_ftell(&s->pb) + ret - s->data_offset) % asf->packet_size)
- ret += asf->packet_size - ((url_ftell(&s->pb) + ret - s->data_offset) % asf->packet_size);
+ //printf("PacketLeftSize:%d Pad:%d Pos:%"PRId64"\n", asf->packet_size_left, asf->packet_padsize, url_ftell(pb));
+ assert(ret>=0);
/* fail safe */
url_fskip(pb, ret);
+
+ ret= (url_ftell(&s->pb) - s->data_offset) % asf->packet_size;
+ if(asf->hdr.max_pktsize == asf->hdr.min_pktsize && ret){
+ av_log(s, AV_LOG_ERROR, "packet end missaligned skiping %d\n", ret);
+ url_fskip(pb, asf->packet_size - 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))
continue;
}
if (asf->packet_time_start == 0) {
- /* read frame header */
- int num = get_byte(pb);
- asf->packet_segments--;
- rsize++;
- asf->packet_key_frame = (num & 0x80) >> 7;
- asf->stream_index = asf->asfid2avid[num & 0x7f];
- // sequence should be ignored!
- DO_2BITS(asf->packet_property >> 4, asf->packet_seq, 0);
- DO_2BITS(asf->packet_property >> 2, asf->packet_frag_offset, 0);
- DO_2BITS(asf->packet_property, asf->packet_replic_size, 0);
-//printf("key:%d stream:%d seq:%d offset:%d replic_size:%d\n", asf->packet_key_frame, asf->stream_index, asf->packet_seq, //asf->packet_frag_offset, asf->packet_replic_size);
- if (asf->packet_replic_size > 1) {
- assert(asf->packet_replic_size >= 8);
- // it should be always at least 8 bytes - FIXME validate
- asf->packet_obj_size = get_le32(pb);
- asf->packet_frag_timestamp = get_le32(pb); // timestamp
- if (asf->packet_replic_size > 8)
- url_fskip(pb, asf->packet_replic_size - 8);
- rsize += asf->packet_replic_size; // FIXME - check validity
- } else if (asf->packet_replic_size==1){
- // multipacket - frag_offset is begining timestamp
- asf->packet_time_start = asf->packet_frag_offset;
- asf->packet_frag_offset = 0;
- asf->packet_frag_timestamp = asf->packet_timestamp;
-
- asf->packet_time_delta = get_byte(pb);
- rsize++;
- }else{
- assert(asf->packet_replic_size==0);
- }
- if (asf->packet_flags & 0x01) {
- DO_2BITS(asf->packet_segsizetype >> 6, asf->packet_frag_size, 0); // 0 is illegal
-#undef DO_2BITS
- //printf("Fragsize %d\n", asf->packet_frag_size);
- } else {
- asf->packet_frag_size = asf->packet_size_left - rsize;
- //printf("Using rest %d %d %d\n", asf->packet_frag_size, asf->packet_size_left, rsize);
- }
- if (asf->packet_replic_size == 1) {
- asf->packet_multi_size = asf->packet_frag_size;
- if (asf->packet_multi_size > asf->packet_size_left) {
- asf->packet_segments = 0;
- continue;
- }
+ if(asf_read_frame_header(s) < 0){
+ asf->packet_segments= 0;
+ continue;
}
- asf->packet_size_left -= rsize;
- //printf("___objsize____ %d %d rs:%d\n", asf->packet_obj_size, asf->packet_frag_offset, rsize);
-
if (asf->stream_index < 0
|| s->streams[asf->stream_index]->discard >= AVDISCARD_ALL
|| (!asf->packet_key_frame && s->streams[asf->stream_index]->discard >= AVDISCARD_NONKEY)
url_fskip(pb, asf->packet_frag_size);
asf->packet_size_left -= asf->packet_frag_size;
if(asf->stream_index < 0)
- av_log(s, AV_LOG_ERROR, "ff asf skip %d %d\n", asf->packet_frag_size, num & 0x7f);
+ av_log(s, AV_LOG_ERROR, "ff asf skip %d (unknown stream)\n", asf->packet_frag_size);
continue;
}
asf->asf_st = s->streams[asf->stream_index]->priv_data;
}
asf_st = asf->asf_st;
- if ((asf->packet_frag_offset != asf_st->frag_offset
- || (asf->packet_frag_offset
- && asf->packet_seq != asf_st->seq)) // seq should be ignored
- ) {
- /* cannot continue current packet: free it */
- // FIXME better check if packet was already allocated
- av_log(s, AV_LOG_INFO, "ff asf parser skips: %d - %d o:%d - %d %d %d fl:%d\n",
- asf_st->pkt.size,
- asf->packet_obj_size,
- asf->packet_frag_offset, asf_st->frag_offset,
- asf->packet_seq, asf_st->seq, asf->packet_frag_size);
- if (asf_st->pkt.size)
- av_free_packet(&asf_st->pkt);
- asf_st->frag_offset = 0;
- if (asf->packet_frag_offset != 0) {
- url_fskip(pb, asf->packet_frag_size);
- av_log(s, AV_LOG_INFO, "ff asf parser skipping %db\n", asf->packet_frag_size);
- asf->packet_size_left -= asf->packet_frag_size;
- continue;
- }
- }
if (asf->packet_replic_size == 1) {
// frag_offset is here used as the begining timestamp
asf->packet_frag_timestamp = asf->packet_time_start;
asf->packet_multi_size -= asf->packet_obj_size;
//printf("COMPRESS size %d %d %d ms:%d\n", asf->packet_obj_size, asf->packet_frag_timestamp, asf->packet_size_left, asf->packet_multi_size);
}
- if (asf_st->frag_offset == 0) {
+ if (asf_st->pkt.size != asf->packet_obj_size) { //FIXME is this condition sufficient?
+ if(asf_st->pkt.data){
+ av_log(s, AV_LOG_INFO, "freeing incomplete packet size %d, new %d\n", asf_st->pkt.size, asf->packet_obj_size);
+ asf_st->frag_offset = 0;
+ av_free_packet(&asf_st->pkt);
+ }
/* new packet */
av_new_packet(&asf_st->pkt, asf->packet_obj_size);
asf_st->seq = asf->packet_seq;
asf->packet_size_left -= asf->packet_frag_size;
if (asf->packet_size_left < 0)
continue;
+
+ if( asf->packet_frag_offset >= asf_st->pkt.size
+ || asf->packet_frag_size > asf_st->pkt.size - asf->packet_frag_offset){
+ av_log(s, AV_LOG_ERROR, "packet fragment position invalid %u,%u not in %u\n",
+ asf->packet_frag_offset, asf->packet_frag_size, asf_st->pkt.size);
+ continue;
+ }
+
get_buffer(pb, asf_st->pkt.data + asf->packet_frag_offset,
asf->packet_frag_size);
asf_st->frag_offset += asf->packet_frag_size;
if (asf_st->frag_offset == asf_st->pkt.size) {
/* return packet */
if (asf_st->ds_span > 1) {
+ if(asf_st->pkt.size != asf_st->ds_packet_size * asf_st->ds_span){
+ av_log(s, AV_LOG_ERROR, "pkt.size != ds_packet_size * ds_span\n");
+ }else{
/* packet descrambling */
- char* newdata = av_malloc(asf_st->pkt.size);
+ uint8_t *newdata = av_malloc(asf_st->pkt.size);
if (newdata) {
int offset = 0;
while (offset < asf_st->pkt.size) {
int col = off % asf_st->ds_span;
int idx = row + col * asf_st->ds_packet_size / asf_st->ds_chunk_size;
//printf("off:%d row:%d col:%d idx:%d\n", off, row, col, idx);
+
+ assert(offset + asf_st->ds_chunk_size <= asf_st->pkt.size);
+ assert(idx+1 <= asf_st->pkt.size / asf_st->ds_chunk_size);
memcpy(newdata + offset,
asf_st->pkt.data + idx * asf_st->ds_chunk_size,
asf_st->ds_chunk_size);
av_free(asf_st->pkt.data);
asf_st->pkt.data = newdata;
}
+ }
}
asf_st->frag_offset = 0;
- memcpy(pkt, &asf_st->pkt, sizeof(AVPacket));
+ *pkt= asf_st->pkt;
//printf("packet %d %d\n", asf_st->pkt.size, asf->packet_frag_size);
asf_st->pkt.size = 0;
asf_st->pkt.data = 0;
for(i=0;i<s->nb_streams;i++) {
AVStream *st = s->streams[i];
av_free(st->priv_data);
- av_free(st->codec->palctrl);
+ av_free(st->codec->palctrl);
}
return 0;
}
int i;
asf->packet_nb_frames = 0;
- asf->packet_timestamp_start = -1;
- asf->packet_timestamp_end = -1;
asf->packet_size_left = 0;
asf->packet_segments = 0;
asf->packet_flags = 0;
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, pkt->size, 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)
}
*ppos= pos;
-//printf("found keyframe at %Ld stream %d stamp:%Ld\n", *ppos, stream_index, pts);
+//printf("found keyframe at %"PRId64" stream %d stamp:%"PRId64"\n", *ppos, stream_index, pts);
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%"PRIx64", 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: %"PRId64"\n", pos);
+ url_fseek(&s->pb, pos, SEEK_SET);
+ }
asf_reset_header(s);
return 0;
}
projects / ffmpeg / blobdiff