avpacket: use AVBuffer to allow refcounting the packets.

This will allow us to avoid copying the packets in many cases.

This breaks ABI.

1 files changed, 7 insertions, 6 deletions

diff --git a/libavformat/flacdec.c b/libavformat/flacdec.c
index f19f95d901..7aaec9eb26 100644
--- a/libavformat/flacdec.c
+++ b/libavformat/flacdec.c
@@ -32,7 +32,8 @@ static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
 {
     const CodecMime *mime = ff_id3v2_mime_tags;
     enum  AVCodecID      id = AV_CODEC_ID_NONE;
-    uint8_t mimetype[64], *desc = NULL, *data = NULL;
+    AVBufferRef *data = NULL;
+    uint8_t mimetype[64], *desc = NULL;
     AVIOContext *pb = NULL;
     AVStream *st;
     int type, width, height;
@@ -110,11 +111,11 @@ static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
             ret = AVERROR_INVALIDDATA;
         goto fail;
     }
-    if (!(data = av_malloc(len))) {
+    if (!(data = av_buffer_alloc(len))) {
         ret = AVERROR(ENOMEM);
         goto fail;
     }
-    if (avio_read(pb, data, len) != len) {
+    if (avio_read(pb, data->data, len) != len) {
         av_log(s, AV_LOG_ERROR, "Error reading attached picture data.\n");
         if (s->error_recognition & AV_EF_EXPLODE)
             ret = AVERROR(EIO);
@@ -128,9 +129,9 @@ static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
     }
 
     av_init_packet(&st->attached_pic);
-    st->attached_pic.data         = data;
+    st->attached_pic.buf          = data;
+    st->attached_pic.data         = data->data;
     st->attached_pic.size         = len;
-    st->attached_pic.destruct     = av_destruct_packet;
     st->attached_pic.stream_index = st->index;
     st->attached_pic.flags       |= AV_PKT_FLAG_KEY;
 
@@ -148,8 +149,8 @@ static int parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
     return 0;
 
 fail:
+    av_buffer_unref(&data);
     av_freep(&desc);
-    av_freep(&data);
     av_freep(&pb);
     return ret;