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avimux: fix avi header bytewriting

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... by using proper offsets for tag list writing.
Also use _reset rather than _free and consistently use bytewriter position.

See #619293.
This commit is contained in:
Mark Nauwelaerts 2010-06-11 10:57:41 +02:00
parent b8732d7b99
commit de5cb168ee
1 changed files with 6 additions and 6 deletions
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12
gst/avi/gstavimux.c
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@ -1105,7 +1105,7 @@ gst_avi_mux_end_chunk (GstByteWriter * bw, guint chunk_offset)
{ {
guint size; guint size;
size = gst_byte_writer_get_size (bw); size = gst_byte_writer_get_pos (bw);
gst_byte_writer_set_pos (bw, chunk_offset); gst_byte_writer_set_pos (bw, chunk_offset);
gst_byte_writer_put_uint32_le (bw, size - chunk_offset - 4); gst_byte_writer_put_uint32_le (bw, size - chunk_offset - 4);
@ -1361,14 +1361,14 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
if (tags) { if (tags) {
guint info; guint info;
gst_avi_mux_start_chunk (&bw, "LIST", 0); info = gst_avi_mux_start_chunk (&bw, "LIST", 0);
info = gst_byte_writer_put_data (&bw, (guint8 *) "INFO", 4); gst_byte_writer_put_data (&bw, (guint8 *) "INFO", 4);
gst_tag_list_foreach (tags, gst_avi_mux_write_tag, &bw); gst_tag_list_foreach (tags, gst_avi_mux_write_tag, &bw);
if (info == gst_byte_writer_get_size (&bw)) { if (info + 8 == gst_byte_writer_get_pos (&bw)) {
/* no tags writen, remove the empty INFO LIST as it is useless /* no tags writen, remove the empty INFO LIST as it is useless
* and prevents playback in vlc */ * and prevents playback in vlc */
gst_byte_writer_set_pos (&bw, info - 8); gst_byte_writer_set_pos (&bw, info - 4);
} else { } else {
gst_avi_mux_end_chunk (&bw, info); gst_avi_mux_end_chunk (&bw, info);
} }
@ -1383,7 +1383,7 @@ gst_avi_mux_riff_get_avi_header (GstAviMux * avimux)
gst_byte_writer_put_data (&bw, (guint8 *) "movi", 4); gst_byte_writer_put_data (&bw, (guint8 *) "movi", 4);
/* now get the data */ /* now get the data */
buffer = gst_byte_writer_free_and_get_buffer (&bw); buffer = gst_byte_writer_reset_and_get_buffer (&bw);
/* ... but RIFF includes more than just header */ /* ... but RIFF includes more than just header */
size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buffer) + 4); size = GST_READ_UINT32_LE (GST_BUFFER_DATA (buffer) + 4);