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hls: Store all durations in AV_TIME_BASE

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Also parse segment durations as floating point, which is allowed
since HLS version 3.

This is based on a patch by Zhang Rui.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-07-29 10:26:02 +03:00
parent e1d5b24476
commit c441910399
1 changed files with 11 additions and 12 deletions
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23
libavformat/hls.c
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@ -56,7 +56,7 @@ enum KeyType {
};
struct segment {
int duration;
int64_t duration;
char url[MAX_URL_SIZE];
char key[MAX_URL_SIZE];
enum KeyType key_type;
@ -81,7 +81,7 @@ struct variant {
int stream_offset;
int finished;
int target_duration;
int64_t target_duration;
int start_seq_no;
int n_segments;
struct segment **segments;
@ -202,7 +202,8 @@ static void handle_key_args(struct key_info *info, const char *key,
static int parse_playlist(HLSContext *c, const char *url,
struct variant *var, AVIOContext *in)
{
int ret = 0, duration = 0, is_segment = 0, is_variant = 0, bandwidth = 0;
int ret = 0, is_segment = 0, is_variant = 0, bandwidth = 0;
int64_t duration = 0;
enum KeyType key_type = KEY_NONE;
uint8_t iv[16] = "";
int has_iv = 0;
@ -257,7 +258,7 @@ static int parse_playlist(HLSContext *c, const char *url,
goto fail;
}
}
var->target_duration = atoi(ptr);
var->target_duration = atoi(ptr) * AV_TIME_BASE;
} else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
if (!var) {
var = new_variant(c, 0, url, NULL);
@ -272,7 +273,7 @@ static int parse_playlist(HLSContext *c, const char *url,
var->finished = 1;
} else if (av_strstart(line, "#EXTINF:", &ptr)) {
is_segment = 1;
duration = atoi(ptr);
duration = atof(ptr) * AV_TIME_BASE;
} else if (av_strstart(line, "#", NULL)) {
continue;
} else if (line[0]) {
@ -383,7 +384,6 @@ restart:
int64_t reload_interval = v->n_segments > 0 ?
v->segments[v->n_segments - 1]->duration :
v->target_duration;
reload_interval *= 1000000;
reload:
if (!v->finished &&
@ -393,7 +393,7 @@ reload:
/* If we need to reload the playlist again below (if
* there's still no more segments), switch to a reload
* interval of half the target duration. */
reload_interval = v->target_duration * 500000;
reload_interval = v->target_duration / 2;
}
if (v->cur_seq_no < v->start_seq_no) {
av_log(NULL, AV_LOG_WARNING,
@ -481,7 +481,7 @@ static int hls_read_header(AVFormatContext *s)
int64_t duration = 0;
for (i = 0; i < c->variants[0]->n_segments; i++)
duration += c->variants[0]->segments[i]->duration;
s->duration = duration * AV_TIME_BASE;
s->duration = duration;
}
/* Open the demuxer for each variant */
@ -717,7 +717,7 @@ static int hls_read_seek(AVFormatContext *s, int stream_index,
s->streams[stream_index]->time_base.den,
flags & AVSEEK_FLAG_BACKWARD ?
AV_ROUND_DOWN : AV_ROUND_UP);
timestamp = av_rescale_rnd(timestamp, 1, stream_index >= 0 ?
timestamp = av_rescale_rnd(timestamp, AV_TIME_BASE, stream_index >= 0 ?
s->streams[stream_index]->time_base.den :
AV_TIME_BASE, flags & AVSEEK_FLAG_BACKWARD ?
AV_ROUND_DOWN : AV_ROUND_UP);
@ -730,9 +730,8 @@ static int hls_read_seek(AVFormatContext *s, int stream_index,
for (i = 0; i < c->n_variants; i++) {
/* Reset reading */
struct variant *var = c->variants[i];
int64_t pos = c->first_timestamp == AV_NOPTS_VALUE ? 0 :
av_rescale_rnd(c->first_timestamp, 1, AV_TIME_BASE,
flags & AVSEEK_FLAG_BACKWARD ? AV_ROUND_DOWN : AV_ROUND_UP);
int64_t pos = c->first_timestamp == AV_NOPTS_VALUE ?
0 : c->first_timestamp;
if (var->input) {
ffurl_close(var->input);
var->input = NULL;