[FFmpeg-devel] [PATCH] ffserver: fix seeking with ?date=...

[Clément Bœsch]

From: Clément Bœsch <clement.boesch at smartjog.com>

Regression since 5f847bf61dca1fd1a2f65a2f56c9a99d1cb716ab.
---
 ffmpeg_opt.c         |    5 ++++-
 libavformat/ffm.h    |    1 +
 libavformat/ffmenc.c |   10 ++++++++--
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/ffmpeg_opt.c b/ffmpeg_opt.c
index bce66f8..323ae8b 100644
--- a/ffmpeg_opt.c
+++ b/ffmpeg_opt.c
@@ -1368,8 +1368,11 @@ static int read_ffserver_streams(OptionsContext *o, AVFormatContext *s, const ch
             choose_pixel_fmt(st, codec, st->codec->pix_fmt);
     }
 
+    /* ffserver seeking with date=... needs a date reference */
+    err = parse_option(o, "metadata", "creation_time=now", options);
+
     avformat_close_input(&ic);
-    return 0;
+    return err;
 }
 
 static void init_output_filter(OutputFilter *ofilter, OptionsContext *o,
diff --git a/libavformat/ffm.h b/libavformat/ffm.h
index 04f19cc..4940235 100644
--- a/libavformat/ffm.h
+++ b/libavformat/ffm.h
@@ -54,6 +54,7 @@ typedef struct FFMContext {
     int64_t dts;
     uint8_t *packet_ptr, *packet_end;
     uint8_t packet[FFM_PACKET_SIZE];
+    int64_t start_time;
 } FFMContext;
 
 int64_t ffm_read_write_index(int fd);
diff --git a/libavformat/ffmenc.c b/libavformat/ffmenc.c
index 1aa4775..8c60b5d 100644
--- a/libavformat/ffmenc.c
+++ b/libavformat/ffmenc.c
@@ -22,6 +22,7 @@
 #include "libavutil/intreadwrite.h"
 #include "libavutil/intfloat.h"
 #include "libavutil/avassert.h"
+#include "libavutil/parseutils.h"
 #include "avformat.h"
 #include "internal.h"
 #include "ffm.h"
@@ -85,11 +86,15 @@ static void ffm_write_data(AVFormatContext *s,
 static int ffm_write_header(AVFormatContext *s)
 {
     FFMContext *ffm = s->priv_data;
+    AVDictionaryEntry *t;
     AVStream *st;
     AVIOContext *pb = s->pb;
     AVCodecContext *codec;
     int bit_rate, i;
 
+    if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
+        av_parse_time(&ffm->start_time, t->value, 0);
+
     ffm->packet_size = FFM_PACKET_SIZE;
 
     /* header */
@@ -199,11 +204,12 @@ static int ffm_write_header(AVFormatContext *s)
 
 static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
 {
+    FFMContext *ffm = s->priv_data;
     int64_t dts;
     uint8_t header[FRAME_HEADER_SIZE+4];
     int header_size = FRAME_HEADER_SIZE;
 
-    dts = pkt->dts;
+    dts = ffm->start_time + pkt->dts;
     /* packet size & key_frame */
     header[0] = pkt->stream_index;
     header[1] = 0;
@@ -211,7 +217,7 @@ static int ffm_write_packet(AVFormatContext *s, AVPacket *pkt)
         header[1] |= FLAG_KEY_FRAME;
     AV_WB24(header+2, pkt->size);
     AV_WB24(header+5, pkt->duration);
-    AV_WB64(header+8, pkt->pts);
+    AV_WB64(header+8, ffm->start_time + pkt->pts);
     if (pkt->pts != pkt->dts) {
         header[1] |= FLAG_DTS;
         AV_WB32(header+16, pkt->pts - pkt->dts);
-- 
1.7.10.4