[FFmpeg-devel] [PATCH 10/21] avformat/brstm: Simplify cleanup after read_header failure

[Andreas Rheinhardt]

by setting the FF_INPUTFORMAT_HEADER_CLEANUP flag.

Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@gmail.com>
---
 libavformat/brstm.c | 26 +++++++++-----------------
 1 file changed, 9 insertions(+), 17 deletions(-)

diff --git a/libavformat/brstm.c b/libavformat/brstm.c
index ca965ed7e1..22d862ae43 100644
--- a/libavformat/brstm.c
+++ b/libavformat/brstm.c
@@ -92,7 +92,6 @@ static int read_header(AVFormatContext *s)
     int64_t h1offset, pos, toffset;
     uint32_t size, asize, start = 0;
     AVStream *st;
-    int ret = AVERROR_EOF;
     int loop = 0;
     int bfstm = !strcmp("bfstm", s->iformat->name);
 
@@ -266,16 +265,14 @@ static int read_header(AVFormatContext *s)
 
         for (ch = 0; ch < st->codecpar->channels; ch++) {
             if (avio_read(s->pb, b->table + ch * 32, 32) != 32) {
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
+                return AVERROR_INVALIDDATA;
             }
             avio_skip(s->pb, bfstm ? 14 : 24);
         }
     }
 
     if (size < (avio_tell(s->pb) - pos)) {
-        ret = AVERROR_INVALIDDATA;
-        goto fail;
+        return AVERROR_INVALIDDATA;
     }
 
     avio_skip(s->pb, size - (avio_tell(s->pb) - pos));
@@ -284,8 +281,7 @@ static int read_header(AVFormatContext *s)
         chunk = avio_rl32(s->pb);
         size  = read32(s);
         if (size < 8) {
-            ret = AVERROR_INVALIDDATA;
-            goto fail;
+            return AVERROR_INVALIDDATA;
         }
         size -= 8;
         switch (chunk) {
@@ -297,8 +293,7 @@ static int read_header(AVFormatContext *s)
 
             asize = b->block_count * st->codecpar->channels * 4;
             if (size < asize) {
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
+                return AVERROR_INVALIDDATA;
             }
             if (b->adpc) {
                 av_log(s, AV_LOG_WARNING, "skipping additional ADPC chunk\n");
@@ -306,8 +301,7 @@ static int read_header(AVFormatContext *s)
             } else {
                 b->adpc = av_mallocz(asize);
                 if (!b->adpc) {
-                    ret = AVERROR(ENOMEM);
-                    goto fail;
+                    return AVERROR(ENOMEM);
                 }
                 if (bfstm && codec != AV_CODEC_ID_ADPCM_THP_LE) {
                     // Big-endian BFSTMs have little-endian SEEK tables
@@ -327,8 +321,7 @@ static int read_header(AVFormatContext *s)
             if ((start < avio_tell(s->pb)) ||
                 (!b->adpc && (codec == AV_CODEC_ID_ADPCM_THP ||
                               codec == AV_CODEC_ID_ADPCM_THP_LE))) {
-                ret = AVERROR_INVALIDDATA;
-                goto fail;
+                return AVERROR_INVALIDDATA;
             }
             avio_skip(s->pb, start - avio_tell(s->pb));
 
@@ -349,10 +342,7 @@ skip:
         }
     }
 
-fail:
-    read_close(s);
-
-    return ret;
+    return AVERROR_EOF;
 }
 
 static int read_packet(AVFormatContext *s, AVPacket *pkt)
@@ -467,6 +457,7 @@ AVInputFormat ff_brstm_demuxer = {
     .read_close     = read_close,
     .read_seek      = read_seek,
     .extensions     = "brstm",
+    .flags_internal = FF_INPUTFORMAT_HEADER_CLEANUP,
 };
 
 AVInputFormat ff_bfstm_demuxer = {
@@ -479,4 +470,5 @@ AVInputFormat ff_bfstm_demuxer = {
     .read_close     = read_close,
     .read_seek      = read_seek,
     .extensions     = "bfstm,bcstm",
+    .flags_internal = FF_INPUTFORMAT_HEADER_CLEANUP,
 };
-- 
2.20.1

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