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lavf/segment: fix bogus segment index rewrapping logic

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Decouple segment index wrapping and segment count logic. The counter
should not be reset since it detects the segment increasing timeframe.
This commit is contained in:
Stefano Sabatini 2012-08-15 22:12:11 +02:00
parent b89e00bd1c
commit d3a2a614bf
1 changed files with 15 additions and 11 deletions
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26
libavformat/segment.c
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@ -42,14 +42,15 @@ typedef enum {
typedef struct {
const AVClass *class; /**< Class for private options. */
int number;
int segment_idx; ///< index of the segment file to write, starting from 0
int segment_idx_wrap; ///< number after which the index wraps
int segment_count; ///< number of segment files already written
AVFormatContext *avf;
char *format; ///< format to use for output segment files
char *list; ///< filename for the segment list file
int list_size; ///< number of entries for the segment list file
ListType list_type; ///< set the list type
AVIOContext *list_pb; ///< list file put-byte context
int wrap; ///< number after which the index wraps
char *time_str; ///< segment duration specification string
int64_t time; ///< segment duration
char *times_str; ///< segment times specification string
@ -67,14 +68,15 @@ static int segment_start(AVFormatContext *s)
AVFormatContext *oc = seg->avf;
int err = 0;
if (seg->wrap)
seg->number %= seg->wrap;
if (seg->segment_idx_wrap)
seg->segment_idx %= seg->segment_idx_wrap;
if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
s->filename, seg->number++) < 0) {
s->filename, seg->segment_idx++) < 0) {
av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->filename);
return AVERROR(EINVAL);
}
seg->segment_count++;
if ((err = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL)) < 0)
@ -121,7 +123,7 @@ static int segment_end(AVFormatContext *s)
oc->filename);
if (seg->list) {
if (seg->list_size && !(seg->number % seg->list_size)) {
if (seg->list_size && !(seg->segment_count % seg->list_size)) {
avio_close(seg->list_pb);
if ((ret = avio_open2(&seg->list_pb, seg->list, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL)) < 0)
@ -204,7 +206,7 @@ static int seg_write_header(AVFormatContext *s)
AVFormatContext *oc;
int ret, i;
seg->number = 0;
seg->segment_count = 0;
if (seg->time_str && seg->times_str) {
av_log(s, AV_LOG_ERROR,
@ -274,10 +276,11 @@ static int seg_write_header(AVFormatContext *s)
oc->nb_streams = s->nb_streams;
if (av_get_frame_filename(oc->filename, sizeof(oc->filename),
s->filename, seg->number++) < 0) {
s->filename, seg->segment_idx++) < 0) {
ret = AVERROR(EINVAL);
goto fail;
}
seg->segment_count++;
if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
&s->interrupt_callback, NULL)) < 0)
@ -310,9 +313,10 @@ static int seg_write_packet(AVFormatContext *s, AVPacket *pkt)
int ret;
if (seg->times) {
end_pts = seg->number <= seg->nb_times ? seg->times[seg->number-1] : INT64_MAX;
end_pts = seg->segment_count <= seg->nb_times ?
seg->times[seg->segment_count-1] : INT64_MAX;
} else {
end_pts = seg->time * seg->number;
end_pts = seg->time * seg->segment_count;
}
/* if the segment has video, start a new segment *only* with a key video frame */
@ -375,7 +379,7 @@ static const AVOption options[] = {
{ "segment_time", "set segment duration", OFFSET(time_str),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "segment_time_delta","set approximation value used for the segment times", OFFSET(time_delta_str), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, E },
{ "segment_times", "set segment split time points", OFFSET(times_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E },
{ "segment_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, E },
{ "segment_wrap", "set number after which the index wraps", OFFSET(segment_idx_wrap), AV_OPT_TYPE_INT, {.dbl = 0}, 0, INT_MAX, E },
{ NULL },
};