Cosmetics

[ffmpeg] / libavformat / dv.c

diff --git a/libavformat/dv.c b/libavformat/dv.c
index e99f5c598ff296ac3230179ddb9b9f790f242682..89fd26a47f715af1a0003f5d942beb55f8da08c1 100644 (file)
--- a/libavformat/dv.c
+++ b/libavformat/dv.c
@@ -11,18 +11,20 @@
  * 50 Mbps (DVCPRO50) support
  * Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com>
  *
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 #include <time.h>
@@ -356,8 +358,13 @@ static int64_t dv_frame_offset(AVFormatContext *s, DVDemuxContext *c,
     return offset;
 }
 
-void dv_flush_audio_packets(DVDemuxContext *c)
+void dv_offset_reset(DVDemuxContext *c, int64_t frame_offset)
 {
+    c->frames= frame_offset;
+    if (c->ach)
+        c->abytes= av_rescale(c->frames,
+                          c->ast[0]->codec->bit_rate * (int64_t)c->sys->frame_rate_base,
+                          8*c->sys->frame_rate);
     c->audio_pkt[0].size = c->audio_pkt[1].size = 0;
 }
 
@@ -381,7 +388,7 @@ static int dv_read_header(AVFormatContext *s,
 
     if (get_buffer(&s->pb, c->buf, DV_PROFILE_BYTES) <= 0 ||
         url_fseek(&s->pb, -DV_PROFILE_BYTES, SEEK_CUR) < 0)
-        return AVERROR_IO;
+        return AVERROR(EIO);
 
     c->dv_demux->sys = dv_frame_profile(c->buf);
     s->bit_rate = av_rescale(c->dv_demux->sys->frame_size * 8,
@@ -402,7 +409,7 @@ static int dv_read_packet(AVFormatContext *s, AVPacket *pkt)
     if (size < 0) {
         size = c->dv_demux->sys->frame_size;
         if (get_buffer(&s->pb, c->buf, size) <= 0)
-            return AVERROR_IO;
+            return AVERROR(EIO);
 
         size = dv_produce_packet(c->dv_demux, pkt, c->buf, size);
     }
@@ -417,14 +424,10 @@ static int dv_read_seek(AVFormatContext *s, int stream_index,
     DVDemuxContext *c = r->dv_demux;
     int64_t offset= dv_frame_offset(s, c, timestamp, flags);
 
-    c->frames= offset / c->sys->frame_size;
-    if (c->ach)
-        c->abytes= av_rescale(c->frames,
-                          c->ast[0]->codec->bit_rate * (int64_t)c->sys->frame_rate_base,
-                          8*c->sys->frame_rate);
+    dv_offset_reset(c, offset / c->sys->frame_size);
 
-    dv_flush_audio_packets(c);
-    return url_fseek(&s->pb, offset, SEEK_SET);
+    offset = url_fseek(&s->pb, offset, SEEK_SET);
+    return (offset < 0)?offset:0;
 }
 
 static int dv_read_close(AVFormatContext *s)