avformat: Don't free old extradata before ff_alloc/get_extradata

These functions already free it themselves before they allocate the new
extradata.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavformat/avidec.c

@@ -770,7 +770,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
                             st->codecpar->extradata_size =  size - 10 * 4;
                         if (st->codecpar->extradata) {
                             av_log(s, AV_LOG_WARNING, "New extradata in strf chunk, freeing previous one.\n");
-                            av_freep(&st->codecpar->extradata);
                         }
                         ret = ff_get_extradata(s, st->codecpar, pb,
                                                st->codecpar->extradata_size);
@@ -932,7 +931,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
                 if (size<(1<<30)) {
                     if (st->codecpar->extradata) {
                         av_log(s, AV_LOG_WARNING, "New extradata in strd chunk, freeing previous one.\n");
-                        av_freep(&st->codecpar->extradata);
                     }
                     if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
                         return ret;

libavformat/cafdec.c

@@ -135,7 +135,6 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
             return AVERROR_INVALIDDATA;
         }
 
-        av_freep(&st->codecpar->extradata);
         if ((ret = ff_alloc_extradata(st->codecpar, ALAC_HEADER)) < 0)
             return ret;
 
@@ -175,10 +174,8 @@ static int read_kuki_chunk(AVFormatContext *s, int64_t size)
             return AVERROR_PATCHWELCOME;
         }
         avio_skip(pb, size);
-    } else {
-        av_freep(&st->codecpar->extradata);
-        if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0)
-            return ret;
+    } else if ((ret = ff_get_extradata(s, st->codecpar, pb, size)) < 0) {
+        return ret;
     }
 
     return 0;

libavformat/concatdec.c

@@ -171,10 +171,6 @@ static int copy_stream_props(AVStream *st, AVStream *source_st)
 
     if (st->codecpar->codec_id || !source_st->codecpar->codec_id) {
         if (st->codecpar->extradata_size < source_st->codecpar->extradata_size) {
-            if (st->codecpar->extradata) {
-                av_freep(&st->codecpar->extradata);
-                st->codecpar->extradata_size = 0;
-            }
             ret = ff_alloc_extradata(st->codecpar,
                                      source_st->codecpar->extradata_size);
             if (ret < 0)

libavformat/flic.c

@@ -175,7 +175,6 @@ static int flic_read_header(AVFormatContext *s)
         avio_seek(pb, 12, SEEK_SET);
 
         /* send over abbreviated FLIC header chunk */
-        av_freep(&st->codecpar->extradata);
         if ((ret = ff_alloc_extradata(st->codecpar, 12)) < 0)
             return ret;
         memcpy(st->codecpar->extradata, header, 12);

libavformat/flvdec.c

@@ -799,7 +799,6 @@ static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size)
     if (!size)
         return 0;
 
-    av_freep(&st->codecpar->extradata);
     if ((ret = ff_get_extradata(s, st->codecpar, s->pb, size)) < 0)
         return ret;
     st->internal->need_context_update = 1;

libavformat/matroskaenc.c

@@ -2264,7 +2264,6 @@ static int mkv_check_new_extra_data(AVFormatContext *s, AVPacket *pkt)
                 return ret;
             if (!output_sample_rate)
                 output_sample_rate = track->sample_rate; // Space is already reserved, so it's this or a void element.
-            av_freep(&par->extradata);
             ret = ff_alloc_extradata(par, side_data_size);
             if (ret < 0)
                 return ret;

libavformat/mov.c

@@ -1838,7 +1838,6 @@ static int mov_read_wave(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         st->codecpar->codec_id == AV_CODEC_ID_QDMC ||
         st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
         // pass all frma atom to codec, needed at least for QDMC and QDM2
-        av_freep(&st->codecpar->extradata);
         ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
         if (ret < 0)
             return ret;
@@ -1905,7 +1904,6 @@ static int mov_read_glbl(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         av_log(c->fc, AV_LOG_WARNING, "ignoring multiple glbl\n");
         return 0;
     }
-    av_freep(&st->codecpar->extradata);
     ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size);
     if (ret < 0)
         return ret;
@@ -1938,7 +1936,6 @@ static int mov_read_dvc1(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return 0;
 
     avio_seek(pb, 6, SEEK_CUR);
-    av_freep(&st->codecpar->extradata);
     ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 7);
     if (ret < 0)
         return ret;
@@ -1966,7 +1963,6 @@ static int mov_read_strf(MOVContext *c, AVIOContext *pb, MOVAtom atom)
         return AVERROR_INVALIDDATA;
 
     avio_skip(pb, 40);
-    av_freep(&st->codecpar->extradata);
     ret = ff_get_extradata(c->fc, st->codecpar, pb, atom.size - 40);
     if (ret < 0)
         return ret;

libavformat/nuv.c

@@ -83,10 +83,6 @@ static int get_codec_data(AVFormatContext *s, AVIOContext *pb, AVStream *vst,
             avio_skip(pb, 6);
             size = PKTSIZE(avio_rl32(pb));
             if (vst && subtype == 'R') {
-                if (vst->codecpar->extradata) {
-                    av_freep(&vst->codecpar->extradata);
-                    vst->codecpar->extradata_size = 0;
-                }
                 if ((ret = ff_get_extradata(NULL, vst->codecpar, pb, size)) < 0)
                     return ret;
                 size = 0;

libavformat/oggparseogm.c

@@ -109,7 +109,6 @@ ogm_header(AVFormatContext *s, int idx)
                 size -= 52;
                 if (bytestream2_get_bytes_left(&p) < size)
                     return AVERROR_INVALIDDATA;
-                av_freep(&st->codecpar->extradata);
                 if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
                     return ret;
                 bytestream2_get_buffer(&p, st->codecpar->extradata, st->codecpar->extradata_size);

libavformat/oggparseopus.c

@@ -63,7 +63,6 @@ static int opus_header(AVFormatContext *avf, int idx)
         /*gain                = AV_RL16(packet + 16);*/
         /*channel_map         = AV_RL8 (packet + 18);*/
 
-        av_freep(&st->codecpar->extradata);
         if ((ret = ff_alloc_extradata(st->codecpar, os->psize)) < 0)
             return ret;
 

libavformat/riffdec.c

@@ -145,7 +145,6 @@ int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb,
             size   -= 22;
         }
         if (cbSize > 0) {
-            av_freep(&par->extradata);
             if (ff_get_extradata(s, par, pb, cbSize) < 0)
                 return AVERROR(ENOMEM);
             size -= cbSize;
@@ -158,7 +157,6 @@ int ff_get_wav_header(AVFormatContext *s, AVIOContext *pb,
         int nb_streams, i;
 
         size -= 4;
-        av_freep(&par->extradata);
         if (ff_get_extradata(s, par, pb, size) < 0)
             return AVERROR(ENOMEM);
         nb_streams         = AV_RL16(par->extradata + 4);

libavformat/rtpdec_latm.c

@@ -115,7 +115,6 @@ static int parse_fmtp_config(AVStream *st, const char *value)
         ret = AVERROR_PATCHWELCOME;
         goto end;
     }
-    av_freep(&st->codecpar->extradata);
     ret = ff_alloc_extradata(st->codecpar, (get_bits_left(&gb) + 7)/8);
     if (ret < 0) {
         goto end;

libavformat/rtpdec_mpeg4.c

@@ -113,7 +113,7 @@ static int parse_fmtp_config(AVCodecParameters *par, const char *value)
 {
     /* decode the hexa encoded parameter */
     int len = ff_hex_to_data(NULL, value), ret;
-    av_freep(&par->extradata);
+
     if ((ret = ff_alloc_extradata(par, len)) < 0)
         return ret;
     ff_hex_to_data(par->extradata, value);

libavformat/rtpdec_qdm2.c

@@ -105,7 +105,7 @@ static int qdm2_parse_config(PayloadContext *qdm, AVStream *st,
             case 4: /* stream with extradata */
                 if (item_len < 30)
                     return AVERROR_INVALIDDATA;
-                av_freep(&st->codecpar->extradata);
+
                 ret = ff_alloc_extradata(st->codecpar, 26 + item_len);
                 if (ret < 0) {
                     return ret;

libavformat/rtpdec_svq3.c

@@ -58,10 +58,6 @@ static int svq3_parse_packet (AVFormatContext *s, PayloadContext *sv,
     len -= 2;
 
     if (config_packet) {
-
-        av_freep(&st->codecpar->extradata);
-        st->codecpar->extradata_size = 0;
-
         if (len < 2 || ff_alloc_extradata(st->codecpar, len + 8))
             return AVERROR_INVALIDDATA;
 

libavformat/utils.c

@@ -5480,7 +5480,6 @@ int ff_generate_avci_extradata(AVStream *st)
     if (!size)
         return 0;
 
-    av_freep(&st->codecpar->extradata);
     if ((ret = ff_alloc_extradata(st->codecpar, size)) < 0)
         return ret;
     memcpy(st->codecpar->extradata, data, size);

libavformat/wavdec.c

@@ -220,7 +220,6 @@ static int wav_parse_xma2_tag(AVFormatContext *s, int64_t size, AVStream **st)
     avpriv_set_pts_info(*st, 64, 1, (*st)->codecpar->sample_rate);
 
     avio_seek(pb, -size, SEEK_CUR);
-    av_freep(&(*st)->codecpar->extradata);
     if ((ret = ff_get_extradata(s, (*st)->codecpar, pb, size)) < 0)
         return ret;
 

libavformat/xmv.c

@@ -397,8 +397,6 @@ static int xmv_process_packet_header(AVFormatContext *s)
                 av_assert0(xmv->video.stream_index < s->nb_streams);
 
                 if (vst->codecpar->extradata_size < 4) {
-                    av_freep(&vst->codecpar->extradata);
-
                     if ((ret = ff_alloc_extradata(vst->codecpar, 4)) < 0)
                         return ret;
                 }