mpegts: Silence "can't seek" warning on unseekable

[ffmpeg] / libavformat / sierravmd.c

diff --git a/libavformat/sierravmd.c b/libavformat/sierravmd.c
index 98fe95a559aeddbf57feae23f618440fbe40790c..4539cfb20f0d3e2172f6af6a0673414ed4079a66 100644 (file)
--- a/libavformat/sierravmd.c
+++ b/libavformat/sierravmd.c
@@ -2,20 +2,20 @@
  * Sierra VMD Format Demuxer
  * Copyright (c) 2004 The ffmpeg Project
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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 2.1 of the License, or (at your option) any later version.
  *
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
@@ -81,7 +81,7 @@ static int vmd_read_header(AVFormatContext *s,
                            AVFormatParameters *ap)
 {
     VmdDemuxContext *vmd = s->priv_data;
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     AVStream *st = NULL, *vst;
     unsigned int toc_offset;
     unsigned char *raw_frame_table;
@@ -95,11 +95,11 @@ static int vmd_read_header(AVFormatContext *s,
     int sound_buffers;
 
     /* fetch the main header, including the 2 header length bytes */
-    url_fseek(pb, 0, SEEK_SET);
-    if (get_buffer(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
+    avio_seek(pb, 0, SEEK_SET);
+    if (avio_read(pb, vmd->vmd_header, VMD_HEADER_SIZE) != VMD_HEADER_SIZE)
         return AVERROR(EIO);
 
-    if(vmd->vmd_header[16] == 'i' && vmd->vmd_header[17] == 'v' && vmd->vmd_header[18] == '3')
+    if(vmd->vmd_header[24] == 'i' && vmd->vmd_header[25] == 'v' && vmd->vmd_header[26] == '3')
         vmd->is_indeo3 = 1;
     else
         vmd->is_indeo3 = 0;
@@ -155,7 +155,7 @@ static int vmd_read_header(AVFormatContext *s,
     toc_offset = AV_RL32(&vmd->vmd_header[812]);
     vmd->frame_count = AV_RL16(&vmd->vmd_header[6]);
     vmd->frames_per_block = AV_RL16(&vmd->vmd_header[18]);
-    url_fseek(pb, toc_offset, SEEK_SET);
+    avio_seek(pb, toc_offset, SEEK_SET);
 
     raw_frame_table = NULL;
     vmd->frame_table = NULL;
@@ -172,7 +172,7 @@ static int vmd_read_header(AVFormatContext *s,
         av_free(vmd->frame_table);
         return AVERROR(ENOMEM);
     }
-    if (get_buffer(pb, raw_frame_table, raw_frame_table_size) !=
+    if (avio_read(pb, raw_frame_table, raw_frame_table_size) !=
         raw_frame_table_size) {
         av_free(raw_frame_table);
         av_free(vmd->frame_table);
@@ -189,7 +189,7 @@ static int vmd_read_header(AVFormatContext *s,
             int type;
             uint32_t size;
 
-            get_buffer(pb, chunk, BYTES_PER_FRAME_RECORD);
+            avio_read(pb, chunk, BYTES_PER_FRAME_RECORD);
             type = chunk[0];
             size = AV_RL32(&chunk[2]);
             if(!size && type != 1)
@@ -234,7 +234,7 @@ static int vmd_read_packet(AVFormatContext *s,
                            AVPacket *pkt)
 {
     VmdDemuxContext *vmd = s->priv_data;
-    ByteIOContext *pb = s->pb;
+    AVIOContext *pb = s->pb;
     int ret = 0;
     vmd_frame *frame;
 
@@ -243,16 +243,16 @@ static int vmd_read_packet(AVFormatContext *s,
 
     frame = &vmd->frame_table[vmd->current_frame];
     /* position the stream (will probably be there already) */
-    url_fseek(pb, frame->frame_offset, SEEK_SET);
+    avio_seek(pb, frame->frame_offset, SEEK_SET);
 
     if (av_new_packet(pkt, frame->frame_size + BYTES_PER_FRAME_RECORD))
         return AVERROR(ENOMEM);
-    pkt->pos= url_ftell(pb);
+    pkt->pos= avio_tell(pb);
     memcpy(pkt->data, frame->frame_record, BYTES_PER_FRAME_RECORD);
-    if(vmd->is_indeo3)
-        ret = get_buffer(pb, pkt->data, frame->frame_size);
+    if(vmd->is_indeo3 && frame->frame_record[0] == 0x02)
+        ret = avio_read(pb, pkt->data, frame->frame_size);
     else
-        ret = get_buffer(pb, pkt->data + BYTES_PER_FRAME_RECORD,
+        ret = avio_read(pb, pkt->data + BYTES_PER_FRAME_RECORD,
             frame->frame_size);
 
     if (ret != frame->frame_size) {
@@ -281,11 +281,11 @@ static int vmd_read_close(AVFormatContext *s)
 }
 
 AVInputFormat ff_vmd_demuxer = {
-    "vmd",
-    NULL_IF_CONFIG_SMALL("Sierra VMD format"),
-    sizeof(VmdDemuxContext),
-    vmd_probe,
-    vmd_read_header,
-    vmd_read_packet,
-    vmd_read_close,
+    .name           = "vmd",
+    .long_name      = NULL_IF_CONFIG_SMALL("Sierra VMD format"),
+    .priv_data_size = sizeof(VmdDemuxContext),
+    .read_probe     = vmd_probe,
+    .read_header    = vmd_read_header,
+    .read_packet    = vmd_read_packet,
+    .read_close     = vmd_read_close,
 };