[FFmpeg-cvslog] r19148 - in trunk/libavformat: isom.h mov.c
bcoudurier
subversion
Thu Jun 11 07:13:23 CEST 2009
Author: bcoudurier
Date: Thu Jun 11 07:13:23 2009
New Revision: 19148
Log:
Remove time_rate, we cannot compute exactly when fragments are
used and we cannot determine if fragments are present or not in
streamed mode.
Modified:
trunk/libavformat/isom.h
trunk/libavformat/mov.c
Modified: trunk/libavformat/isom.h
==============================================================================
--- trunk/libavformat/isom.h Thu Jun 11 06:30:05 2009 (r19147)
+++ trunk/libavformat/isom.h Thu Jun 11 07:13:23 2009 (r19148)
@@ -106,7 +106,6 @@ typedef struct MOVStreamContext {
unsigned int keyframe_count;
int *keyframes;
int time_scale;
- int time_rate;
int time_offset; ///< time offset of the first edit list entry
int current_sample;
unsigned int bytes_per_frame;
Modified: trunk/libavformat/mov.c
==============================================================================
--- trunk/libavformat/mov.c Thu Jun 11 06:30:05 2009 (r19147)
+++ trunk/libavformat/mov.c Thu Jun 11 07:13:23 2009 (r19148)
@@ -1253,8 +1253,6 @@ static int mov_read_stts(MOVContext *c,
sc->stts_data[i].count= sample_count;
sc->stts_data[i].duration= sample_duration;
- sc->time_rate= av_gcd(sc->time_rate, sample_duration);
-
dprintf(c->fc, "sample_count=%d, sample_duration=%d\n",sample_count,sample_duration);
duration+=(int64_t)sample_duration*sample_count;
@@ -1282,8 +1280,6 @@ static int mov_read_cslg(MOVContext *c,
sc->dts_shift = get_be32(pb);
dprintf(c->fc, "dts shift %d\n", sc->dts_shift);
- sc->time_rate= av_gcd(sc->time_rate, FFABS(sc->dts_shift));
-
get_be32(pb); // least dts to pts delta
get_be32(pb); // greatest dts to pts delta
get_be32(pb); // pts start
@@ -1317,8 +1313,6 @@ static int mov_read_ctts(MOVContext *c,
sc->ctts_data[i].count = count;
sc->ctts_data[i].duration= duration;
-
- sc->time_rate= av_gcd(sc->time_rate, FFABS(duration));
}
return 0;
}
@@ -1337,8 +1331,7 @@ static void mov_build_index(MOVContext *
/* adjust first dts according to edit list */
if (sc->time_offset) {
int rescaled = sc->time_offset < 0 ? av_rescale(sc->time_offset, sc->time_scale, mov->time_scale) : sc->time_offset;
- assert(sc->time_offset % sc->time_rate == 0);
- current_dts = - (rescaled / sc->time_rate);
+ current_dts = -rescaled;
if (sc->ctts_data && sc->ctts_data[0].duration / sc->stts_data[0].duration > 16) {
/* more than 16 frames delay, dts are likely wrong
this happens with files created by iMovie */
@@ -1356,7 +1349,6 @@ static void mov_build_index(MOVContext *
unsigned int distance = 0;
int key_off = sc->keyframes && sc->keyframes[0] == 1;
- sc->dts_shift /= sc->time_rate;
current_dts -= sc->dts_shift;
st->nb_frames = sc->sample_count;
@@ -1394,8 +1386,7 @@ static void mov_build_index(MOVContext *
}
current_offset += sample_size;
- assert(sc->stts_data[stts_index].duration % sc->time_rate == 0);
- current_dts += sc->stts_data[stts_index].duration / sc->time_rate;
+ current_dts += sc->stts_data[stts_index].duration;
distance++;
stts_sample++;
current_sample++;
@@ -1443,8 +1434,7 @@ static void mov_build_index(MOVContext *
size, samples);
current_offset += size;
- assert(samples % sc->time_rate == 0);
- current_dts += samples / sc->time_rate;
+ current_dts += samples;
chunk_samples -= samples;
}
}
@@ -1477,12 +1467,10 @@ static int mov_read_trak(MOVContext *c,
return 0;
}
- if (!sc->time_rate)
- sc->time_rate = 1;
if (!sc->time_scale)
sc->time_scale = c->time_scale;
- av_set_pts_info(st, 64, sc->time_rate, sc->time_scale);
+ av_set_pts_info(st, 64, 1, sc->time_scale);
if (st->codec->codec_type == CODEC_TYPE_AUDIO &&
!st->codec->frame_size && sc->stts_count == 1) {
@@ -1491,11 +1479,6 @@ static int mov_read_trak(MOVContext *c,
dprintf(c->fc, "frame size %d\n", st->codec->frame_size);
}
- if (st->duration != AV_NOPTS_VALUE) {
- assert(st->duration % sc->time_rate == 0);
- st->duration /= sc->time_rate;
- }
-
mov_build_index(c, st);
if (sc->dref_id-1 < sc->drefs_count && sc->drefs[sc->dref_id-1].path) {
@@ -1754,8 +1737,7 @@ static int mov_read_trun(MOVContext *c,
"size %d, distance %d, keyframe %d\n", st->index, sc->sample_count+i,
offset, dts, sample_size, distance, keyframe);
distance++;
- assert(sample_duration % sc->time_rate == 0);
- dts += sample_duration / sc->time_rate;
+ dts += sample_duration;
offset += sample_size;
}
frag->moof_offset = offset;
@@ -1856,7 +1838,6 @@ static int mov_read_elst(MOVContext *c,
get_be32(pb); /* Media rate */
if (i == 0 && time >= -1) {
sc->time_offset = time != -1 ? time : -duration;
- sc->time_rate = av_gcd(sc->time_rate, FFABS(sc->time_offset));
}
}
@@ -2006,8 +1987,7 @@ static int mov_read_packet(AVFormatConte
MOVStreamContext *msc = st->priv_data;
if (st->discard != AVDISCARD_ALL && msc->pb && msc->current_sample < st->nb_index_entries) {
AVIndexEntry *current_sample = &st->index_entries[msc->current_sample];
- int64_t dts = av_rescale(current_sample->timestamp * (int64_t)msc->time_rate,
- AV_TIME_BASE, msc->time_scale);
+ int64_t dts = av_rescale(current_sample->timestamp, AV_TIME_BASE, msc->time_scale);
dprintf(s, "stream %d, sample %d, dts %"PRId64"\n", i, msc->current_sample, dts);
if (!sample || (url_is_streamed(s->pb) && current_sample->pos < sample->pos) ||
(!url_is_streamed(s->pb) &&
@@ -2051,8 +2031,7 @@ static int mov_read_packet(AVFormatConte
pkt->stream_index = sc->ffindex;
pkt->dts = sample->timestamp;
if (sc->ctts_data) {
- assert(sc->ctts_data[sc->ctts_index].duration % sc->time_rate == 0);
- pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration / sc->time_rate;
+ pkt->pts = pkt->dts + sc->dts_shift + sc->ctts_data[sc->ctts_index].duration;
/* update ctts context */
sc->ctts_sample++;
if (sc->ctts_index < sc->ctts_count &&
More information about the ffmpeg-cvslog
mailing list