avformat/hlsplaylist: Add const where appropriate

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavformat/hlsplaylist.c

@@ -35,8 +35,10 @@ void ff_hls_write_playlist_version(AVIOContext *out, int version) {
     avio_printf(out, "#EXT-X-VERSION:%d\n", version);
 }
 
-void ff_hls_write_audio_rendition(AVIOContext *out, char *agroup,
-                                  const char *filename, char *language, int name_id, int is_default) {
+void ff_hls_write_audio_rendition(AVIOContext *out, const char *agroup,
+                                  const char *filename, const char *language,
+                                  int name_id, int is_default)
+{
     if (!out || !agroup || !filename)
         return;
 
@@ -48,8 +50,10 @@ void ff_hls_write_audio_rendition(AVIOContext *out, char *agroup,
     avio_printf(out, "URI=\"%s\"\n", filename);
 }
 
-void ff_hls_write_subtitle_rendition(AVIOContext *out, char *sgroup,
-                                  const char *filename, char *language, int name_id, int is_default) {
+void ff_hls_write_subtitle_rendition(AVIOContext *out, const char *sgroup,
+                                     const char *filename, const char *language,
+                                     int name_id, int is_default)
+{
     if (!out || !filename)
         return;
 
@@ -61,10 +65,11 @@ void ff_hls_write_subtitle_rendition(AVIOContext *out, char *sgroup,
     avio_printf(out, "URI=\"%s\"\n", filename);
 }
 
-void ff_hls_write_stream_info(AVStream *st, AVIOContext *out,
-                              int bandwidth, const char *filename, char *agroup,
-                              char *codecs, char *ccgroup, char *sgroup) {
-
+void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, int bandwidth,
+                              const char *filename, const char *agroup,
+                              const char *codecs, const char *ccgroup,
+                              const char *sgroup)
+{
     if (!out || !filename)
         return;
 
@@ -112,7 +117,7 @@ void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache,
     }
 }
 
-void ff_hls_write_init_file(AVIOContext *out, char *filename,
+void ff_hls_write_init_file(AVIOContext *out, const char *filename,
                             int byterange_mode, int64_t size, int64_t pos) {
     avio_printf(out, "#EXT-X-MAP:URI=\"%s\"", filename);
     if (byterange_mode) {
@@ -125,8 +130,8 @@ int ff_hls_write_file_entry(AVIOContext *out, int insert_discont,
                              int byterange_mode,
                              double duration, int round_duration,
                              int64_t size, int64_t pos, //Used only if HLS_SINGLE_FILE flag is set
-                             char *baseurl, //Ignored if NULL
-                             char *filename, double *prog_date_time,
+                            const char *baseurl /* Ignored if NULL */,
+                            const char *filename, double *prog_date_time,
                              int64_t video_keyframe_size, int64_t video_keyframe_pos, int iframe_mode) {
     if (!out || !filename)
         return AVERROR(EINVAL);

libavformat/hlsplaylist.h

@@ -37,24 +37,27 @@ typedef enum {
 } PlaylistType;
 
 void ff_hls_write_playlist_version(AVIOContext *out, int version);
-void ff_hls_write_audio_rendition(AVIOContext *out, char *agroup,
-                                  const char *filename, char *language, int name_id, int is_default);
-void ff_hls_write_subtitle_rendition(AVIOContext *out, char *sgroup,
-                                  const char *filename, char *language, int name_id, int is_default);
-void ff_hls_write_stream_info(AVStream *st, AVIOContext *out,
-                              int bandwidth, const char *filename, char *agroup,
-                              char *codecs, char *ccgroup, char *sgroup);
+void ff_hls_write_audio_rendition(AVIOContext *out, const char *agroup,
+                                  const char *filename, const char *language,
+                                  int name_id, int is_default);
+void ff_hls_write_subtitle_rendition(AVIOContext *out, const char *sgroup,
+                                     const char *filename, const char *language,
+                                     int name_id, int is_default);
+void ff_hls_write_stream_info(AVStream *st, AVIOContext *out, int bandwidth,
+                              const char *filename, const char *agroup,
+                              const char *codecs, const char *ccgroup,
+                              const char *sgroup);
 void ff_hls_write_playlist_header(AVIOContext *out, int version, int allowcache,
                                   int target_duration, int64_t sequence,
                                   uint32_t playlist_type, int iframe_mode);
-void ff_hls_write_init_file(AVIOContext *out, char *filename,
+void ff_hls_write_init_file(AVIOContext *out, const char *filename,
                             int byterange_mode, int64_t size, int64_t pos);
 int ff_hls_write_file_entry(AVIOContext *out, int insert_discont,
                              int byterange_mode,
                              double duration, int round_duration,
                              int64_t size, int64_t pos, //Used only if HLS_SINGLE_FILE flag is set
-                             char *baseurl, //Ignored if NULL
-                             char *filename, double *prog_date_time,
+                            const char *baseurl /* Ignored if NULL */,
+                            const char *filename, double *prog_date_time,
                              int64_t video_keyframe_size, int64_t video_keyframe_pos, int iframe_mode);
 void ff_hls_write_end_list (AVIOContext *out);