From a713b58767e8d77b641d1b87e68de11c176fd454 Mon Sep 17 00:00:00 2001
From: Carl Eugen Hoyos <ceffmpeg@gmail.com>
Date: Sun, 27 Jan 2019 22:35:51 +0100
Subject: [PATCH] lavf: Constify AVInputFormat pointer.

---
 libavformat/avformat.h |    8 ++++----
 libavformat/format.c   |    4 ++--
 libavformat/hls.c      |    2 +-
 libavformat/utils.c    |    4 ++--
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/libavformat/avformat.h b/libavformat/avformat.h
index fdaffa5..9cfdbe8 100644
--- a/libavformat/avformat.h
+++ b/libavformat/avformat.h
@@ -1346,7 +1346,7 @@ typedef struct AVFormatContext {
      *
      * Demuxing only, set by avformat_open_input().
      */
-    struct AVInputFormat *iformat;
+    const struct AVInputFormat *iformat;
 
     /**
      * The output container format.
@@ -2272,14 +2272,14 @@ AVInputFormat *av_probe_input_format3(AVProbeData *pd, int is_opened, int *score
  *         the maximal score is AVPROBE_SCORE_MAX
  * AVERROR code otherwise
  */
-int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat const **fmt,
                            const char *url, void *logctx,
                            unsigned int offset, unsigned int max_probe_size);
 
 /**
  * Like av_probe_input_buffer2() but returns 0 on success
  */
-int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer(AVIOContext *pb, const AVInputFormat **fmt,
                           const char *url, void *logctx,
                           unsigned int offset, unsigned int max_probe_size);
 
@@ -2302,7 +2302,7 @@ int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
  *
  * @note If you want to use custom IO, preallocate the format context and set its pb field.
  */
-int avformat_open_input(AVFormatContext **ps, const char *url, AVInputFormat *fmt, AVDictionary **options);
+int avformat_open_input(AVFormatContext **ps, const char *url, const AVInputFormat *fmt, AVDictionary **options);
 
 attribute_deprecated
 int av_demuxer_open(AVFormatContext *ic);
diff --git a/libavformat/format.c b/libavformat/format.c
index 2c4c895..157e09a 100644
--- a/libavformat/format.c
+++ b/libavformat/format.c
@@ -219,7 +219,7 @@ AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened)
     return av_probe_input_format2(pd, is_opened, &score);
 }
 
-int av_probe_input_buffer2(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer2(AVIOContext *pb, const AVInputFormat **fmt,
                           const char *filename, void *logctx,
                           unsigned int offset, unsigned int max_probe_size)
 {
@@ -309,7 +309,7 @@ fail:
     return ret < 0 ? ret : score;
 }
 
-int av_probe_input_buffer(AVIOContext *pb, AVInputFormat **fmt,
+int av_probe_input_buffer(AVIOContext *pb, const AVInputFormat **fmt,
                           const char *filename, void *logctx,
                           unsigned int offset, unsigned int max_probe_size)
 {
diff --git a/libavformat/hls.c b/libavformat/hls.c
index 8975a87..4c2265a 100644
--- a/libavformat/hls.c
+++ b/libavformat/hls.c
@@ -1868,7 +1868,7 @@ static int hls_read_header(AVFormatContext *s)
     /* Open the demuxer for each playlist */
     for (i = 0; i < c->n_playlists; i++) {
         struct playlist *pls = c->playlists[i];
-        AVInputFormat *in_fmt = NULL;
+        const AVInputFormat *in_fmt = NULL;
 
         if (!(pls->ctx = avformat_alloc_context())) {
             ret = AVERROR(ENOMEM);
diff --git a/libavformat/utils.c b/libavformat/utils.c
index 7afef54..98e8849 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -535,7 +535,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
 
 
 int avformat_open_input(AVFormatContext **ps, const char *filename,
-                        AVInputFormat *fmt, AVDictionary **options)
+                        const AVInputFormat *fmt, AVDictionary **options)
 {
     AVFormatContext *s = *ps;
     int i, ret = 0;
@@ -2163,7 +2163,7 @@ static int64_t ff_read_timestamp(AVFormatContext *s, int stream_index, int64_t *
 int ff_seek_frame_binary(AVFormatContext *s, int stream_index,
                          int64_t target_ts, int flags)
 {
-    AVInputFormat *avif = s->iformat;
+    const AVInputFormat *avif = s->iformat;
     int64_t av_uninit(pos_min), av_uninit(pos_max), pos, pos_limit;
     int64_t ts_min, ts_max, ts;
     int index;
-- 
1.7.10.4

