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Code Issues Releases Activity

applehttp: Move finished and target_duration to the variant struct

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This is a preparation for a restructuring of the demuxer, to
minimize the later diff.
This commit is contained in:
Martin Storsjö 2011-03-21 00:08:59 +02:00
parent 57cc1ad35f
commit d3964da2c2
1 changed files with 25 additions and 15 deletions
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40
libavformat/applehttp.c
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@ -61,6 +61,8 @@ struct variant {
AVPacket pkt; AVPacket pkt;
int stream_offset; int stream_offset;
int finished;
int target_duration;
int start_seq_no; int start_seq_no;
int n_segments; int n_segments;
struct segment **segments; struct segment **segments;
@ -68,8 +70,6 @@ struct variant {
}; };
typedef struct AppleHTTPContext { typedef struct AppleHTTPContext {
int target_duration;
int finished;
int n_variants; int n_variants;
struct variant **variants; struct variant **variants;
int cur_seq_no; int cur_seq_no;
@ -170,9 +170,10 @@ static int parse_playlist(AppleHTTPContext *c, const char *url,
goto fail; goto fail;
} }
if (var) if (var) {
free_segment_list(var); free_segment_list(var);
c->finished = 0; var->finished = 0;
}
while (!in->eof_reached) { while (!in->eof_reached) {
read_chomp_line(in, line, sizeof(line)); read_chomp_line(in, line, sizeof(line));
if (av_strstart(line, "#EXT-X-STREAM-INF:", &ptr)) { if (av_strstart(line, "#EXT-X-STREAM-INF:", &ptr)) {
@ -182,7 +183,14 @@ static int parse_playlist(AppleHTTPContext *c, const char *url,
&info); &info);
bandwidth = atoi(info.bandwidth); bandwidth = atoi(info.bandwidth);
} else if (av_strstart(line, "#EXT-X-TARGETDURATION:", &ptr)) { } else if (av_strstart(line, "#EXT-X-TARGETDURATION:", &ptr)) {
c->target_duration = atoi(ptr); if (!var) {
var = new_variant(c, 0, url, NULL);
if (!var) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
var->target_duration = atoi(ptr);
} else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) { } else if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) {
if (!var) { if (!var) {
var = new_variant(c, 0, url, NULL); var = new_variant(c, 0, url, NULL);
@ -193,7 +201,8 @@ static int parse_playlist(AppleHTTPContext *c, const char *url,
} }
var->start_seq_no = atoi(ptr); var->start_seq_no = atoi(ptr);
} else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) { } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) {
c->finished = 1; if (var)
var->finished = 1;
} else if (av_strstart(line, "#EXTINF:", &ptr)) { } else if (av_strstart(line, "#EXTINF:", &ptr)) {
is_segment = 1; is_segment = 1;
duration = atoi(ptr); duration = atoi(ptr);
@ -268,7 +277,7 @@ static int applehttp_read_header(AVFormatContext *s, AVFormatParameters *ap)
/* If this isn't a live stream, calculate the total duration of the /* If this isn't a live stream, calculate the total duration of the
* stream. */ * stream. */
if (c->finished) { if (c->variants[0]->finished) {
int64_t duration = 0; int64_t duration = 0;
for (i = 0; i < c->variants[0]->n_segments; i++) for (i = 0; i < c->variants[0]->n_segments; i++)
duration += c->variants[0]->segments[i]->duration; duration += c->variants[0]->segments[i]->duration;
@ -306,7 +315,7 @@ static int applehttp_read_header(AVFormatContext *s, AVFormatParameters *ap)
c->cur_seq_no = c->max_start_seq; c->cur_seq_no = c->max_start_seq;
/* If this is a live stream with more than 3 segments, start at the /* If this is a live stream with more than 3 segments, start at the
* third last segment. */ * third last segment. */
if (!c->finished && c->min_end_seq - c->max_start_seq > 3) if (!c->variants[0]->finished && c->min_end_seq - c->max_start_seq > 3)
c->cur_seq_no = c->min_end_seq - 2; c->cur_seq_no = c->min_end_seq - 2;
return 0; return 0;
@ -326,7 +335,7 @@ static int open_variant(AppleHTTPContext *c, struct variant *var, int skip)
return 0; return 0;
} }
if (c->cur_seq_no - var->start_seq_no >= var->n_segments) if (c->cur_seq_no - var->start_seq_no >= var->n_segments)
return c->finished ? AVERROR_EOF : 0; return c->variants[0]->finished ? AVERROR_EOF : 0;
ret = avio_open(&var->pb, ret = avio_open(&var->pb,
var->segments[c->cur_seq_no - var->start_seq_no]->url, var->segments[c->cur_seq_no - var->start_seq_no]->url,
URL_RDONLY); URL_RDONLY);
@ -390,7 +399,7 @@ start:
} else if (!var->pb && var->needed) { } else if (!var->pb && var->needed) {
if (first) if (first)
av_log(s, AV_LOG_DEBUG, "Opening variant stream %d\n", i); av_log(s, AV_LOG_DEBUG, "Opening variant stream %d\n", i);
if (first && !c->finished) if (first && !var->finished)
if ((ret = parse_playlist(c, var->url, var, NULL)) < 0) if ((ret = parse_playlist(c, var->url, var, NULL)) < 0)
return ret; return ret;
ret = open_variant(c, var, first); ret = open_variant(c, var, first);
@ -442,11 +451,11 @@ start:
first = 0; first = 0;
c->cur_seq_no++; c->cur_seq_no++;
reload: reload:
if (!c->finished) { if (!c->variants[0]->finished) {
/* If this is a live stream and target_duration has elapsed since /* If this is a live stream and target_duration has elapsed since
* the last playlist reload, reload the variant playlists now. */ * the last playlist reload, reload the variant playlists now. */
int64_t now = av_gettime(); int64_t now = av_gettime();
if (now - c->last_load_time >= c->target_duration*1000000) { if (now - c->last_load_time >= c->variants[0]->target_duration*1000000) {
c->max_start_seq = 0; c->max_start_seq = 0;
c->min_end_seq = INT_MAX; c->min_end_seq = INT_MAX;
for (i = 0; i < c->n_variants; i++) { for (i = 0; i < c->n_variants; i++) {
@ -473,9 +482,10 @@ reload:
goto start; goto start;
/* We've reached the end of the playlists - return eof if this is a /* We've reached the end of the playlists - return eof if this is a
* non-live stream, wait until the next playlist reload if it is live. */ * non-live stream, wait until the next playlist reload if it is live. */
if (c->finished) if (c->variants[0]->finished)
return AVERROR_EOF; return AVERROR_EOF;
while (av_gettime() - c->last_load_time < c->target_duration*1000000) { while (av_gettime() - c->last_load_time <
c->variants[0]->target_duration*1000000) {
if (url_interrupt_cb()) if (url_interrupt_cb())
return AVERROR_EXIT; return AVERROR_EXIT;
usleep(100*1000); usleep(100*1000);
@ -500,7 +510,7 @@ static int applehttp_read_seek(AVFormatContext *s, int stream_index,
int i; int i;
struct variant *var = c->variants[0]; struct variant *var = c->variants[0];
if ((flags & AVSEEK_FLAG_BYTE) || !c->finished) if ((flags & AVSEEK_FLAG_BYTE) || !c->variants[0]->finished)
return AVERROR(ENOSYS); return AVERROR(ENOSYS);
/* Reset the variants */ /* Reset the variants */