return ts > (RELATIVE_TS_BASE - (1LL<<48));
}
+/**
+ * Wrap a given time stamp, if there is an indication for an overflow
+ *
+ * @param st stream
+ * @param timestamp the time stamp to wrap
+ * @return resulting time stamp
+ */
+static int64_t wrap_timestamp(AVStream *st, int64_t timestamp)
+{
+ if (st->pts_wrap_behavior != AV_PTS_WRAP_IGNORE &&
+ st->pts_wrap_reference != AV_NOPTS_VALUE && timestamp != AV_NOPTS_VALUE) {
+ if (st->pts_wrap_behavior == AV_PTS_WRAP_ADD_OFFSET &&
+ timestamp < st->pts_wrap_reference)
+ return timestamp + (1ULL<<st->pts_wrap_bits);
+ else if (st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET &&
+ timestamp >= st->pts_wrap_reference)
+ return timestamp - (1ULL<<st->pts_wrap_bits);
+ }
+ return timestamp;
+}
+
/** head of registered input format linked list */
static AVInputFormat *first_iformat = NULL;
/** head of registered output format linked list */
{
AVProbeData pd = { filename ? filename : "", NULL, -offset };
unsigned char *buf = NULL;
- int ret = 0, probe_size;
+ uint8_t *mime_type;
+ int ret = 0, probe_size, buf_offset = 0;
if (!max_probe_size) {
max_probe_size = PROBE_BUF_MAX;
return AVERROR(EINVAL);
}
+ if (!*fmt && pb->av_class && av_opt_get(pb, "mime_type", AV_OPT_SEARCH_CHILDREN, &mime_type) >= 0 && mime_type) {
+ if (!av_strcasecmp(mime_type, "audio/aacp")) {
+ *fmt = av_find_input_format("aac");
+ }
+ av_freep(&mime_type);
+ }
+
for(probe_size= PROBE_BUF_MIN; probe_size<=max_probe_size && !*fmt;
probe_size = FFMIN(probe_size<<1, FFMAX(max_probe_size, probe_size+1))) {
int score = probe_size < max_probe_size ? AVPROBE_SCORE_RETRY : 0;
- int buf_offset = (probe_size == PROBE_BUF_MIN) ? 0 : probe_size>>1;
void *buftmp;
if (probe_size < offset) {
score = 0;
ret = 0; /* error was end of file, nothing read */
}
- pd.buf_size += ret;
+ pd.buf_size = buf_offset += ret;
pd.buf = &buf[offset];
memset(pd.buf + pd.buf_size, 0, AVPROBE_PADDING_SIZE);
}
st= s->streams[pkt->stream_index];
+ pkt->dts = wrap_timestamp(st, pkt->dts);
+ pkt->pts = wrap_timestamp(st, pkt->pts);
force_codec_ids(s, st);
return NULL;
}
+static int update_wrap_reference(AVFormatContext *s, AVStream *st, int stream_index)
+{
+ if (s->correct_ts_overflow && st->pts_wrap_bits < 63 &&
+ st->pts_wrap_reference == AV_NOPTS_VALUE && st->first_dts != AV_NOPTS_VALUE) {
+ int i;
+
+ // reference time stamp should be 60 s before first time stamp
+ int64_t pts_wrap_reference = st->first_dts - av_rescale(60, st->time_base.den, st->time_base.num);
+ // if first time stamp is not more than 1/8 and 60s before the wrap point, subtract rather than add wrap offset
+ int pts_wrap_behavior = (st->first_dts < (1LL<<st->pts_wrap_bits) - (1LL<<st->pts_wrap_bits-3)) ||
+ (st->first_dts < (1LL<<st->pts_wrap_bits) - av_rescale(60, st->time_base.den, st->time_base.num)) ?
+ AV_PTS_WRAP_ADD_OFFSET : AV_PTS_WRAP_SUB_OFFSET;
+
+ AVProgram *first_program = av_find_program_from_stream(s, NULL, stream_index);
+
+ if (!first_program) {
+ int default_stream_index = av_find_default_stream_index(s);
+ if (s->streams[default_stream_index]->pts_wrap_reference == AV_NOPTS_VALUE) {
+ for (i=0; i<s->nb_streams; i++) {
+ s->streams[i]->pts_wrap_reference = pts_wrap_reference;
+ s->streams[i]->pts_wrap_behavior = pts_wrap_behavior;
+ }
+ }
+ else {
+ st->pts_wrap_reference = s->streams[default_stream_index]->pts_wrap_reference;
+ st->pts_wrap_behavior = s->streams[default_stream_index]->pts_wrap_behavior;
+ }
+ }
+ else {
+ AVProgram *program = first_program;
+ while (program) {
+ if (program->pts_wrap_reference != AV_NOPTS_VALUE) {
+ pts_wrap_reference = program->pts_wrap_reference;
+ pts_wrap_behavior = program->pts_wrap_behavior;
+ break;
+ }
+ program = av_find_program_from_stream(s, program, stream_index);
+ }
+
+ // update every program with differing pts_wrap_reference
+ program = first_program;
+ while(program) {
+ if (program->pts_wrap_reference != pts_wrap_reference) {
+ for (i=0; i<program->nb_stream_indexes; i++) {
+ s->streams[program->stream_index[i]]->pts_wrap_reference = pts_wrap_reference;
+ s->streams[program->stream_index[i]]->pts_wrap_behavior = pts_wrap_behavior;
+ }
+
+ program->pts_wrap_reference = pts_wrap_reference;
+ program->pts_wrap_behavior = pts_wrap_behavior;
+ }
+ program = av_find_program_from_stream(s, program, stream_index);
+ }
+ }
+ return 1;
+ }
+ return 0;
+}
+
static void update_initial_timestamps(AVFormatContext *s, int stream_index,
- int64_t dts, int64_t pts)
+ int64_t dts, int64_t pts, AVPacket *pkt)
{
AVStream *st= s->streams[stream_index];
AVPacketList *pktl= s->parse_queue ? s->parse_queue : s->packet_buffer;
pktl->pkt.dts= pts_buffer[0];
}
}
+
+ if (update_wrap_reference(s, st, stream_index) && st->pts_wrap_behavior == AV_PTS_WRAP_SUB_OFFSET) {
+ // correct first time stamps to negative values
+ st->first_dts = wrap_timestamp(st, st->first_dts);
+ st->cur_dts = wrap_timestamp(st, st->cur_dts);
+ pkt->dts = wrap_timestamp(st, pkt->dts);
+ pkt->pts = wrap_timestamp(st, pkt->pts);
+ pts = wrap_timestamp(st, pts);
+ }
+
if (st->start_time == AV_NOPTS_VALUE)
st->start_time = pts;
}
/* PTS = presentation timestamp */
if (pkt->dts == AV_NOPTS_VALUE)
pkt->dts = st->last_IP_pts;
- update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
+ update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt);
if (pkt->dts == AV_NOPTS_VALUE)
pkt->dts = st->cur_dts;
if (pkt->pts == AV_NOPTS_VALUE)
pkt->pts = pkt->dts;
update_initial_timestamps(s, pkt->stream_index, pkt->pts,
- pkt->pts);
+ pkt->pts, pkt);
if (pkt->pts == AV_NOPTS_VALUE)
pkt->pts = st->cur_dts;
pkt->dts = pkt->pts;
pkt->dts= st->pts_buffer[0];
}
if(st->codec->codec_id == AV_CODEC_ID_H264){ // we skipped it above so we try here
- update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
+ update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts, pkt); // this should happen on the first packet
}
if(pkt->dts > st->cur_dts)
st->cur_dts = pkt->dts;
int av_add_index_entry(AVStream *st,
int64_t pos, int64_t timestamp, int size, int distance, int flags)
{
+ timestamp = wrap_timestamp(st, timestamp);
return ff_add_index_entry(&st->index_entries, &st->nb_index_entries,
&st->index_entries_allocated_size, pos,
timestamp, size, distance, flags);
wanted_timestamp, flags);
}
+static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit,
+ int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t ))
+{
+ return wrap_timestamp(s->streams[stream_index], read_timestamp(s, stream_index, ppos, pos_limit));
+}
+
int ff_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags)
{
AVInputFormat *avif= s->iformat;
if(ts_min == AV_NOPTS_VALUE){
pos_min = s->data_offset;
- ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
+ ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
if (ts_min == AV_NOPTS_VALUE)
return -1;
}
pos_max = filesize - 1;
do{
pos_max -= step;
- ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
+ ts_max = ff_read_timestamp(s, stream_index, &pos_max, pos_max + step, read_timestamp);
step += step;
}while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
if (ts_max == AV_NOPTS_VALUE)
for(;;){
int64_t tmp_pos= pos_max + 1;
- int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
+ int64_t tmp_ts= ff_read_timestamp(s, stream_index, &tmp_pos, INT64_MAX, read_timestamp);
if(tmp_ts == AV_NOPTS_VALUE)
break;
ts_max= tmp_ts;
pos= pos_limit;
start_pos= pos;
- ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
+ ts = ff_read_timestamp(s, stream_index, &pos, INT64_MAX, read_timestamp); //may pass pos_limit instead of -1
if(pos == pos_max)
no_change++;
else
ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
#if 0
pos_min = pos;
- ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
+ ts_min = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
pos_min++;
- ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
+ ts_max = ff_read_timestamp(s, stream_index, &pos_min, INT64_MAX, read_timestamp);
av_dlog(s, "pos=0x%"PRIx64" %s<=%s<=%s\n",
pos, av_ts2str(ts_min), av_ts2str(target_ts), av_ts2str(ts_max));
#endif
// ipmovie.c produces.
if (tb_unreliable(st->codec) && st->info->duration_count > 15 && st->info->duration_gcd > FFMAX(1, st->time_base.den/(500LL*st->time_base.num)) && !st->r_frame_rate.num)
av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, st->time_base.den, st->time_base.num * st->info->duration_gcd, INT_MAX);
- if (st->info->duration_count && !st->r_frame_rate.num
+ if (st->info->duration_count>1 && !st->r_frame_rate.num
&& tb_unreliable(st->codec)) {
int num = 0;
double best_error= 0.01;
st->cur_dts = s->iformat ? RELATIVE_TS_BASE : 0;
st->first_dts = AV_NOPTS_VALUE;
st->probe_packets = MAX_PROBE_PACKETS;
+ st->pts_wrap_reference = AV_NOPTS_VALUE;
+ st->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
/* default pts setting is MPEG-like */
avpriv_set_pts_info(st, 33, 1, 90000);
program->discard = AVDISCARD_NONE;
}
program->id = id;
+ program->pts_wrap_reference = AV_NOPTS_VALUE;
+ program->pts_wrap_behavior = AV_PTS_WRAP_IGNORE;
program->start_time =
program->end_time = AV_NOPTS_VALUE;
const uint8_t *buf, int size)
{
int len, i, j, c;
-#undef fprintf
#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
for(i=0;i<size;i+=16) {
static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload, AVRational time_base)
{
-#undef fprintf
#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
PRINT("stream #%d:\n", pkt->stream_index);
PRINT(" keyframe=%d\n", ((pkt->flags & AV_PKT_FLAG_KEY) != 0));
projects / ffmpeg / blobdiff