img2: Use ff_guess_image2_codec(filename) shorthand where appropriate.

libavformat/img2.c

@@ -129,6 +129,11 @@ static enum CodecID av_str2id(const IdStrMap *tags, const char *str)
     return CODEC_ID_NONE;
 }
 
+enum CodecID ff_guess_image2_codec(const char *filename)
+{
+    return av_str2id(img_tags, filename);
+}
+
 /* return -1 if no image found */
 static int find_image_range(int *pfirst_index, int *plast_index,
                             const char *path)
@@ -185,7 +190,7 @@ static int find_image_range(int *pfirst_index, int *plast_index,
 
 static int read_probe(AVProbeData *p)
 {
-    if (p->filename && av_str2id(img_tags, p->filename)) {
+    if (p->filename && ff_guess_image2_codec(p->filename)) {
         if (av_filename_number_test(p->filename))
             return AVPROBE_SCORE_MAX;
         else
@@ -194,11 +199,6 @@ static int read_probe(AVProbeData *p)
     return 0;
 }
 
-enum CodecID ff_guess_image2_codec(const char *filename)
-{
-    return av_str2id(img_tags, filename);
-}
-
 static int read_header(AVFormatContext *s1)
 {
     VideoData *s = s1->priv_data;
@@ -266,7 +266,7 @@ static int read_header(AVFormatContext *s1)
         st->codec->codec_id = s1->audio_codec_id;
     }else{
         st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
-        st->codec->codec_id = av_str2id(img_tags, s->path);
+        st->codec->codec_id   = ff_guess_image2_codec(s->path);
     }
     if(st->codec->codec_type == AVMEDIA_TYPE_VIDEO && pix_fmt != PIX_FMT_NONE)
         st->codec->pix_fmt = pix_fmt;
@@ -403,7 +403,7 @@ static int write_packet(AVFormatContext *s, AVPacket *pkt)
         avio_close(pb[1]);
         avio_close(pb[2]);
     }else{
-        if(av_str2id(img_tags, s->filename) == CODEC_ID_JPEG2000){
+        if (ff_guess_image2_codec(s->filename) == CODEC_ID_JPEG2000) {
             AVStream *st = s->streams[0];
             if(st->codec->extradata_size > 8 &&
                AV_RL32(st->codec->extradata+4) == MKTAG('j','p','2','h')){