drop most url_fileno() calls (allows to use ByteIOContext directly in caller apps instead of URLProtocol)

Originally committed as revision 4275 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avidec.c

@@ -125,7 +125,7 @@ static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
             if (tag1 == MKTAG('m', 'o', 'v', 'i')) {
                 avi->movi_list = url_ftell(pb) - 4;
                 if(size) avi->movi_end = avi->movi_list + size;
-                else     avi->movi_end = url_filesize(url_fileno(pb));
+                else     avi->movi_end = url_fsize(pb);
 #ifdef DEBUG
                 printf("movi end=%Lx\n", avi->movi_end);
 #endif
@@ -486,7 +486,7 @@ resync:
 	if (i >= avi->movi_end) {
 	    if (avi->is_odml) {
 		url_fskip(pb, avi->riff_end - i);
-	        avi->riff_end = avi->movi_end = url_filesize(url_fileno(pb));
+	        avi->riff_end = avi->movi_end = url_fsize(pb);
 	    } else
 	        break;
 	}

libavformat/avio.h

@@ -109,6 +109,7 @@ void put_strz(ByteIOContext *s, const char *buf);
 offset_t url_fseek(ByteIOContext *s, offset_t offset, int whence);
 void url_fskip(ByteIOContext *s, offset_t offset);
 offset_t url_ftell(ByteIOContext *s);
+offset_t url_fsize(ByteIOContext *s);
 int url_feof(ByteIOContext *s);
 int url_ferror(ByteIOContext *s);
 

libavformat/aviobuf.c

@@ -172,6 +172,17 @@ offset_t url_ftell(ByteIOContext *s)
     return url_fseek(s, 0, SEEK_CUR);
 }
 
+offset_t url_fsize(ByteIOContext *s)
+{
+    offset_t size;
+    
+    if (!s->seek)
+        return -EPIPE;
+    size = s->seek(s->opaque, -1, SEEK_END) + 1;
+    s->seek(s->opaque, s->pos, SEEK_SET);
+    return size;
+}
+
 int url_feof(ByteIOContext *s)
 {
     return s->eof_reached;

libavformat/dv.c

@@ -815,7 +815,7 @@ static int64_t dv_frame_offset(AVFormatContext *s, DVDemuxContext *c,
     // FIXME: sys may be wrong if last dv_read_packet() failed (buffer is junk)
     const DVprofile* sys = dv_codec_profile(&c->vst->codec);
     int64_t offset;
-    int64_t size = url_filesize(url_fileno(&s->pb));
+    int64_t size = url_fsize(&s->pb);
     int64_t max_offset = ((size-1) / sys->frame_size) * sys->frame_size;
 
     offset = sys->frame_size * timestamp;

libavformat/ffm.c

@@ -462,7 +462,7 @@ static int ffm_read_header(AVFormatContext *s, AVFormatParameters *ap)
     ffm->write_index = get_be64(pb);
     /* get also filesize */
     if (!url_is_streamed(pb)) {
-        ffm->file_size = url_filesize(url_fileno(pb));
+        ffm->file_size = url_fsize(pb);
         adjust_write_index(s);
     } else {
         ffm->file_size = (uint64_t_C(1) << 63) - 1;

libavformat/img2.c

@@ -244,7 +244,7 @@ static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
         for(i=0; i<3; i++){
             if (url_fopen(f[i], filename, URL_RDONLY) < 0)
                 return AVERROR_IO;
-            size[i]= url_filesize(url_fileno(f[i]));
+            size[i]= url_fsize(f[i]);
             
             if(codec->codec_id != CODEC_ID_RAWVIDEO)
                 break;

libavformat/mov.c

@@ -1740,7 +1740,7 @@ static int mov_read_header(AVFormatContext *s, AVFormatParameters *ap)
         mov->mp4 = 1;
 #endif
     if(!url_is_streamed(pb)) /* .mov and .mp4 aren't streamable anyway (only progressive download if moov is before mdat) */
-	atom.size = url_filesize(url_fileno(pb));
+	atom.size = url_fsize(pb);
     else
 	atom.size = 0x7FFFFFFFFFFFFFFFLL;
 

libavformat/mp3.c

@@ -258,7 +258,7 @@ static int mp3_read_header(AVFormatContext *s,
     /* try to get the TAG */
     if (!url_is_streamed(&s->pb)) {
         /* XXX: change that */
-        filesize = url_filesize(url_fileno(&s->pb));
+        filesize = url_fsize(&s->pb);
         if (filesize > 128) {
             url_fseek(&s->pb, filesize - 128, SEEK_SET);
             ret = get_buffer(&s->pb, buf, ID3_TAG_SIZE);

libavformat/ogg2.c

@@ -449,7 +449,6 @@ static int
 ogg_get_length (AVFormatContext * s)
 {
     ogg_t *ogg = s->priv_data;
-    URLContext *h = url_fileno (&s->pb);
     int idx = -1, i;
 //FIXME: get the right ctx flag to know if is seekable or not
 //    if(ogg->f->flags & URL_FLAG_STREAMED)
@@ -460,7 +459,7 @@ ogg_get_length (AVFormatContext * s)
         return 0;
 
     ogg_save (s);
-    url_seek (h, -MAX_PAGE_SIZE, SEEK_END);
+    url_fseek (&s->pb, -MAX_PAGE_SIZE, SEEK_END);
 
     while (!ogg_read_page (s, &i)){
         if (ogg->streams[i].granule != -1 && ogg->streams[i].granule != 0)
@@ -472,7 +471,7 @@ ogg_get_length (AVFormatContext * s)
             ogg_gptopts (s, idx, ogg->streams[idx].granule);
     }
 
-    ogg->size = url_filesize(h);
+    ogg->size = url_fsize(&s->pb);
     ogg_restore (s, 0);
 
     return 0;

libavformat/utils.c

@@ -1192,7 +1192,7 @@ int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts
 
     if(ts_max == AV_NOPTS_VALUE){
         int step= 1024;
-        pos_max = url_filesize(url_fileno(&s->pb)) - 1;
+        pos_max = url_fsize(&s->pb) - 1;
         do{
             pos_max -= step;
             ts_max = avif->read_timestamp(s, stream_index, &pos_max, pos_max + step);
@@ -1289,7 +1289,7 @@ static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos,
 #endif
 
     pos_min = s->data_offset;
-    pos_max = url_filesize(url_fileno(&s->pb)) - 1;
+    pos_max = url_fsize(&s->pb) - 1;
 
     if     (pos < pos_min) pos= pos_min;
     else if(pos > pos_max) pos= pos_max;
@@ -1586,15 +1586,13 @@ static void av_estimate_timings_from_pts(AVFormatContext *ic)
 
 static void av_estimate_timings(AVFormatContext *ic)
 {
-    URLContext *h;
     int64_t file_size;
 
     /* get the file size, if possible */
     if (ic->iformat->flags & AVFMT_NOFILE) {
         file_size = 0;
     } else {
-        h = url_fileno(&ic->pb);
-        file_size = url_filesize(h);
+        file_size = url_fsize(&ic->pb);
         if (file_size < 0)
             file_size = 0;
     }

libavformat/yuv.c

@@ -54,9 +54,10 @@ static int yuv_read(ByteIOContext *f,
     URLContext *h;
     AVImageInfo info1, *info = &info1;
     
+    img_size = url_fsize(f);
+
     /* XXX: hack hack */
     h = url_fileno(f);
-    img_size = url_seek(h, 0, SEEK_END);
     url_get_filename(h, fname, sizeof(fname));
 
     if (infer_size(&info->width, &info->height, img_size) < 0) {