ffplay, avcodec, avformat: Don't initialize before av_packet_ref()

It already initializes the packet.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

fftools/ffplay.c

@@ -2977,7 +2977,7 @@ static int read_thread(void *arg)
         }
         if (is->queue_attachments_req) {
             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
-                AVPacket copy = { 0 };
+                AVPacket copy;
                 if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
                     goto fail;
                 packet_queue_put(&is->videoq, &copy);

libavcodec/qsvdec_h2645.c

@@ -125,7 +125,7 @@ static int qsv_decode_frame(AVCodecContext *avctx, void *data,
 
     /* buffer the input packet */
     if (avpkt->size) {
-        AVPacket input_ref = { 0 };
+        AVPacket input_ref;
 
         if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
             ret = av_fifo_realloc2(s->packet_fifo,

libavcodec/qsvdec_other.c

@@ -123,7 +123,7 @@ static int qsv_decode_frame(AVCodecContext *avctx, void *data,
 
     /* buffer the input packet */
     if (avpkt->size) {
-        AVPacket input_ref = { 0 };
+        AVPacket input_ref;
 
         if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
             ret = av_fifo_realloc2(s->packet_fifo,

libavformat/fifo.c

@@ -536,7 +536,6 @@ static int fifo_write_packet(AVFormatContext *avf, AVPacket *pkt)
     int ret;
 
     if (pkt) {
-        av_init_packet(&msg.pkt);
         ret = av_packet_ref(&msg.pkt,pkt);
         if (ret < 0)
             return ret;

libavformat/img2enc.c

@@ -78,7 +78,7 @@ static int write_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
     VideoMuxData *img = s->priv_data;
     AVCodecParameters *par = s->streams[pkt->stream_index]->codecpar;
     AVStream *st;
-    AVPacket pkt2 = {0};
+    AVPacket pkt2;
     AVFormatContext *fmt = NULL;
     int ret;
 
@@ -88,8 +88,8 @@ static int write_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
         return ret;
     st = avformat_new_stream(fmt, NULL);
     if (!st) {
-        avformat_free_context(fmt);
-        return AVERROR(ENOMEM);
+        ret = AVERROR(ENOMEM);
+        goto out;
     }
     st->id = pkt->stream_index;
 
@@ -105,8 +105,8 @@ static int write_muxed_file(AVFormatContext *s, AVIOContext *pb, AVPacket *pkt)
         (ret = av_interleaved_write_frame(fmt, &pkt2))         < 0 ||
         (ret = av_write_trailer(fmt))) {}
 
-out:
     av_packet_unref(&pkt2);
+out:
     avformat_free_context(fmt);
     return ret;
 }

libavformat/tee.c

@@ -564,7 +564,6 @@ static int tee_write_packet(AVFormatContext *avf, AVPacket *pkt)
         if (s2 < 0)
             continue;
 
-        memset(&pkt2, 0, sizeof(AVPacket));
         if ((ret = av_packet_ref(&pkt2, pkt)) < 0)
             if (!ret_all) {
                 ret_all = ret;