[FFmpeg-devel] [PATCH 6/6] avcodec/mov2textsub: move the reference in the bsf internal buffer

[James Almer]

There's no need to allocate a new packet for it.

Signed-off-by: James Almer <jamrial at gmail.com>
---
 libavcodec/movsub_bsf.c | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/libavcodec/movsub_bsf.c b/libavcodec/movsub_bsf.c
index 3cb1183cd8..4305186b9c 100644
--- a/libavcodec/movsub_bsf.c
+++ b/libavcodec/movsub_bsf.c
@@ -64,33 +64,21 @@ const AVBitStreamFilter ff_text2movsub_bsf = {
 
 static int mov2textsub(AVBSFContext *ctx, AVPacket *out)
 {
-    AVPacket *in;
     int ret = 0;
 
-    ret = ff_bsf_get_packet(ctx, &in);
+    ret = ff_bsf_get_packet_ref(ctx, out);
     if (ret < 0)
         return ret;
 
-    if (in->size < 2) {
-       ret = AVERROR_INVALIDDATA;
-       goto fail;
+    if (out->size < 2) {
+       av_packet_unref(out);
+       return AVERROR_INVALIDDATA;
     }
 
-    ret = av_new_packet(out, FFMIN(in->size - 2, AV_RB16(in->data)));
-    if (ret < 0)
-        goto fail;
-
-    ret = av_packet_copy_props(out, in);
-    if (ret < 0)
-        goto fail;
-
-    memcpy(out->data, in->data + 2, out->size);
+    out->data += 2;
+    out->size  = FFMIN(out->size - 2, AV_RB16(out->data));
 
-fail:
-    if (ret < 0)
-        av_packet_unref(out);
-    av_packet_free(&in);
-    return ret;
+    return 0;
 }
 
 const AVBitStreamFilter ff_mov2textsub_bsf = {
-- 
2.16.2