[FFmpeg-devel] [PATCH] add segment_path for save segment movie

[Steven Liu]

Create file in segment_path, and *DO NOT WANT* write the path into the
list file, use "-segment_path path" can do it. if *WANT* write the path into
the list, *NO USE* "-segment_path path"




---
libavformat/segment.c | 23 ++++++++++++++++++++---
1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/libavformat/segment.c b/libavformat/segment.c
index 05e29d4..4e4765e 100644
--- a/libavformat/segment.c
+++ b/libavformat/segment.c
@@ -75,6 +75,7 @@ typedef struct {
   ListType list_type;    ///< set the list type
   AVIOContext *list_pb;  ///< list file put-byte context
   char *time_str;        ///< segment duration specification string
+    char *path;
   int64_t time;          ///< segment duration

   char *times_str;       ///< segment times specification string
@@ -175,6 +176,7 @@ static int segment_start(AVFormatContext *s, int write_header)
   SegmentContext *seg = s->priv_data;
   AVFormatContext *oc = seg->avf;
   int err = 0;
+    uint8_t seg_path[1024];

   if (write_header) {
       avformat_free_context(oc);
@@ -188,7 +190,13 @@ static int segment_start(AVFormatContext *s, int write_header)
   if ((err = set_segment_filename(s)) < 0)
       return err;

-    if ((err = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
+    /* seg_path = path + filename */
+    if (!seg->path) {
+        snprintf(seg_path, sizeof(seg_path), "%s/%s", seg->path, oc->filename);
+    } else {
+        snprintf(seg_path, sizeof(seg_path), "%s", oc->filename);
+    }
+    if ((err = avio_open2(&oc->pb, seg_path, AVIO_FLAG_WRITE,
                         &s->interrupt_callback, NULL)) < 0)
       return err;

@@ -528,6 +536,7 @@ static int seg_write_header(AVFormatContext *s)
   SegmentContext *seg = s->priv_data;
   AVFormatContext *oc = NULL;
   int ret;
+    uint8_t seg_path[1024];

   seg->segment_count = 0;
   if (!seg->write_header_trailer)
@@ -599,8 +608,15 @@ static int seg_write_header(AVFormatContext *s)
       goto fail;

   if (seg->write_header_trailer) {
-        if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE,
-                              &s->interrupt_callback, NULL)) < 0)
+
+    /* seg_path = path + filename */
+    if (!seg->path) {
+        snprintf(seg_path, sizeof(seg_path), "%s/%s", seg->path, oc->filename);
+    } else {
+        snprintf(seg_path, sizeof(seg_path), "%s", oc->filename);
+    }
+    if ((ret = avio_open2(&oc->pb, seg_path, AVIO_FLAG_WRITE,
+                          &s->interrupt_callback, NULL)) < 0)
           goto fail;
   } else {
       if ((ret = open_null_ctx(&oc->pb)) < 0)
@@ -779,6 +795,7 @@ static const AVOption options[] = {
   { "segment_time_delta","set approximation value used for the segment times", OFFSET(time_delta), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, 0, E },
   { "segment_times",     "set segment split time points",              OFFSET(times_str),AV_OPT_TYPE_STRING,{.str = NULL},  0, 0,       E },
   { "segment_frames",    "set segment split frame numbers",            OFFSET(frames_str),AV_OPT_TYPE_STRING,{.str = NULL},  0, 0,       E },
+    { "segment_path",    "set segment save to path",            OFFSET(path),AV_OPT_TYPE_STRING,{.str = NULL},  0, 0,       E },
   { "segment_wrap",      "set number after which the index wraps",     OFFSET(segment_idx_wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },
   { "segment_start_number", "set the sequence number of the first segment", OFFSET(segment_idx), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E },

--
1.7.12.4 (Apple Git-37)



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