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Freeze availabilityStartTime and adjust timeShiftBufferDepth

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This commit is contained in:
Matthieu Pepin 2015-10-22 17:34:47 -04:00
parent 17d5c4678d
commit c078a7c3e0
1 changed files with 21 additions and 3 deletions
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24
dash/ngx_rtmp_dash_module.c
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@ -222,6 +222,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
struct tm tm;
ngx_str_t noname, *name;
ngx_uint_t i, frame_rate_num, frame_rate_denom;
ngx_uint_t depth_hour, depth_min, depth_msec;
ngx_rtmp_dash_ctx_t *ctx;
ngx_rtmp_codec_ctx_t *codec_ctx;
ngx_rtmp_dash_frag_t *f;
@ -230,6 +231,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
static u_char buffer[NGX_RTMP_DASH_BUFSIZE];
static u_char start_time[sizeof("1970-09-28T12:00:00+06:00")];
static u_char end_time[sizeof("1970-09-28T12:00:00+06:00")];
static u_char buffer_depth[sizeof("PT1234H00M00.00S")];
static u_char frame_rate[(NGX_INT_T_LEN * 2) + 2];
dacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_dash_module);
@ -263,7 +265,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
" availabilityEndTime=\"%s\"\n" \
" minimumUpdatePeriod=\"PT%uiS\"\n" \
" minBufferTime=\"PT%uiS\"\n" \
" timeShiftBufferDepth=\"PT0H0M0.00S\"\n" \
" timeShiftBufferDepth=\"%s\"\n" \
" suggestedPresentationDelay=\"PT%uiS\"\n" \
" profiles=\"urn:hbbtv:dash:profile:isoff-live:2012," \
"urn:mpeg:dash:profile:isoff-live:2011\"\n" \
@ -342,8 +344,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
" </Period>\n" \
"</MPD>\n"
ngx_libc_localtime(ctx->start_time.sec +
ngx_rtmp_dash_get_frag(s, 0)->timestamp / 1000, &tm);
ngx_libc_localtime(ctx->start_time.sec, &tm);
*ngx_sprintf(start_time, "%4d-%02d-%02dT%02d:%02d:%02d%c%02d:%02d",
tm.tm_year + 1900, tm.tm_mon + 1,
@ -366,6 +367,22 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
ngx_abs(ctx->start_time.gmtoff / 60),
ngx_abs(ctx->start_time.gmtoff % 60)) = 0;
depth_msec = (ngx_uint_t) (
ngx_rtmp_dash_get_frag(s, ctx->nfrags - 1)->timestamp +
ngx_rtmp_dash_get_frag(s, ctx->nfrags - 1)->duration -
ngx_rtmp_dash_get_frag(s, 0)->timestamp);
depth_hour = (ngx_uint_t) (depth_msec / 3600 / 1000);
depth_msec -= depth_hour * 3600000;
depth_min = (ngx_uint_t) (depth_msec / 60 / 1000);
depth_msec -= depth_min * 60000;
*ngx_sprintf(buffer_depth, "PT%dH%02dM%02d.%02dS",
depth_hour, depth_min,
(ngx_uint_t) (depth_msec / 1000),
depth_msec % 1000);
last = buffer + sizeof(buffer);
p = ngx_slprintf(buffer, last, NGX_RTMP_DASH_MANIFEST_HEADER,
@ -373,6 +390,7 @@ ngx_rtmp_dash_write_playlist(ngx_rtmp_session_t *s)
end_time,
(ngx_uint_t) (dacf->fraglen / 1000),
(ngx_uint_t) (dacf->fraglen / 1000),
buffer_depth,
(ngx_uint_t) (dacf->fraglen / 500));
n = ngx_write_fd(fd, buffer, p - buffer);