[FFmpeg-devel] [PATCH 33/36] avcodec/dump_extradata_bsf: Store pointer for access

[Andreas Rheinhardt]

Using par->extradata instead of ctx->par_in->extradata makes the code
more readable and removes an overlong line.

Furthermore, check for extradata_size instead of for the existence of
extradata as nothing needs to be done in case extradata_size is zero.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
 libavcodec/dump_extradata_bsf.c | 15 ++++++++-------
 1 file changed, 8 insertions(+), 7 deletions(-)

diff --git a/libavcodec/dump_extradata_bsf.c b/libavcodec/dump_extradata_bsf.c
index b6ef8b3e6b..be5e23ba5b 100644
--- a/libavcodec/dump_extradata_bsf.c
+++ b/libavcodec/dump_extradata_bsf.c
@@ -40,6 +40,7 @@ typedef struct DumpExtradataContext {
 static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
 {
     DumpExtradataContext *s = ctx->priv_data;
+    const AVCodecParameters *par;
     AVPacket *in = &s->pkt;
     int ret = 0;
 
@@ -47,17 +48,17 @@ static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
     if (ret < 0)
         return ret;
 
-    if (ctx->par_in->extradata &&
+    if ((par = ctx->par_in)->extradata_size &&
         (s->freq == DUMP_FREQ_ALL ||
          (s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) &&
-         (in->size < ctx->par_in->extradata_size ||
-          memcmp(in->data, ctx->par_in->extradata, ctx->par_in->extradata_size))) {
-        if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
+         (in->size < par->extradata_size ||
+          memcmp(in->data, par->extradata, par->extradata_size))) {
+        if (in->size >= INT_MAX - par->extradata_size) {
             ret = AVERROR(ERANGE);
             goto fail;
         }
 
-        ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
+        ret = av_new_packet(out, in->size + par->extradata_size);
         if (ret < 0)
             goto fail;
 
@@ -67,8 +68,8 @@ static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
             goto fail;
         }
 
-        memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
-        memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
+        memcpy(out->data, par->extradata, par->extradata_size);
+        memcpy(out->data + par->extradata_size, in->data, in->size);
     } else {
         av_packet_move_ref(out, in);
     }
-- 
2.20.1