avformat: Constify all muxer/demuxers

[ffmpeg] / libavformat / xmv.c

diff --git a/libavformat/xmv.c b/libavformat/xmv.c
index b974e5a6e69db9c7d60895c138bb0266582b7345..36816ec0054a6db0a6d144186472ed16b200462f 100644 (file)
--- a/libavformat/xmv.c
+++ b/libavformat/xmv.c
@@ -79,7 +79,7 @@ typedef struct XMVAudioPacket {
     uint16_t channels;        ///< Number of channels.
     int32_t sample_rate;      ///< Sampling rate.
     uint16_t bits_per_sample; ///< Bits per compressed sample.
-    uint32_t bit_rate;        ///< Bits of compressed data per second.
+    uint64_t bit_rate;        ///< Bits of compressed data per second.
     uint16_t flags;           ///< Flags
     unsigned block_align;     ///< Bytes per compressed block.
     uint16_t block_samples;   ///< Decompressed samples per compressed block.
@@ -115,7 +115,7 @@ typedef struct XMVDemuxContext {
     XMVAudioPacket *audio; ///< The audio packets contained in each packet.
 } XMVDemuxContext;
 
-static int xmv_probe(AVProbeData *p)
+static int xmv_probe(const AVProbeData *p)
 {
     uint32_t file_version;
 
@@ -191,7 +191,7 @@ static int xmv_read_header(AVFormatContext *s)
         packet->bits_per_sample = avio_rl16(pb);
         packet->flags           = avio_rl16(pb);
 
-        packet->bit_rate      = packet->bits_per_sample *
+        packet->bit_rate      = (uint64_t)packet->bits_per_sample *
                                 packet->sample_rate *
                                 packet->channels;
         packet->block_align   = XMV_BLOCK_ALIGN_SIZE * packet->channels;
@@ -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;
                 }
@@ -585,7 +583,7 @@ static int xmv_read_packet(AVFormatContext *s,
     return 0;
 }
 
-AVInputFormat ff_xmv_demuxer = {
+const AVInputFormat ff_xmv_demuxer = {
     .name           = "xmv",
     .long_name      = NULL_IF_CONFIG_SMALL("Microsoft XMV"),
     .extensions     = "xmv",