avformat: Constify all muxer/demuxers

[ffmpeg] / libavformat / spdifdec.c

diff --git a/libavformat/spdifdec.c b/libavformat/spdifdec.c
index 21bfce422696bf1b63e2a6942e0b112f9cb1d7bb..e39a30424778b12d86267316d8b0c1b6cf72b26b 100644 (file)
--- a/libavformat/spdifdec.c
+++ b/libavformat/spdifdec.c
@@ -107,7 +107,7 @@ static int spdif_get_offset_and_codec(AVFormatContext *s,
    samples = 4096 */
 #define SPDIF_MAX_OFFSET 16384
 
-static int spdif_probe(AVProbeData *p)
+static int spdif_probe(const AVProbeData *p)
 {
     enum AVCodecID codec;
     return ff_spdif_probe (p->buf, p->buf_size, &codec);
@@ -197,15 +197,13 @@ int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
     pkt->pos = avio_tell(pb) - BURST_HEADER_SIZE;
 
     if (avio_read(pb, pkt->data, pkt->size) < pkt->size) {
-        av_packet_unref(pkt);
         return AVERROR_EOF;
     }
     ff_spdif_bswap_buf16((uint16_t *)pkt->data, (uint16_t *)pkt->data, pkt->size >> 1);
 
     ret = spdif_get_offset_and_codec(s, data_type, pkt->data,
                                      &offset, &codec_id);
-    if (ret) {
-        av_packet_unref(pkt);
+    if (ret < 0) {
         return ret;
     }
 
@@ -216,7 +214,6 @@ int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
         /* first packet, create a stream */
         AVStream *st = avformat_new_stream(s, NULL);
         if (!st) {
-            av_packet_unref(pkt);
             return AVERROR(ENOMEM);
         }
         st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
@@ -234,7 +231,7 @@ int ff_spdif_read_packet(AVFormatContext *s, AVPacket *pkt)
     return 0;
 }
 
-AVInputFormat ff_spdif_demuxer = {
+const AVInputFormat ff_spdif_demuxer = {
     .name           = "spdif",
     .long_name      = NULL_IF_CONFIG_SMALL("IEC 61937 (compressed data in S/PDIF)"),
     .read_probe     = spdif_probe,