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gst/avi/gstavidemux.c: Invert DIB images again (see #132341).

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Original commit message from CVS:
* gst/avi/gstavidemux.c: (swap_line), (gst_avi_demux_invert),
(gst_avi_demux_process_next_entry), (gst_avi_demux_stream_data):
Invert DIB images again (see #132341).
This commit is contained in:
Tim-Philipp Müller 2005-11-15 12:16:00 +00:00
parent 6ff59b2f6e
commit 12aed9b96e
3 changed files with 45 additions and 1 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2005-11-15 Tim-Philipp Müller <tim at centricular dot net>
* gst/avi/gstavidemux.c: (swap_line), (gst_avi_demux_invert),
(gst_avi_demux_process_next_entry), (gst_avi_demux_stream_data):
Invert DIB images again (see #132341).
2005-11-14 Thomas Vander Stichele <thomas at apestaart dot org>
* configure.ac:

2
common

@ -1 +1 @@
Subproject commit c6e5de72d79afdcad7d7b3cf4a35305f7f3ddebc
Subproject commit 657b549dfb640a76f3d7ab7676e453c801a83dca

38
gst/avi/gstavidemux.c
View file

@ -2048,6 +2048,37 @@ gst_avi_demux_handle_seek (GstAviDemux * avi, gboolean update)
}
/*
* Invert DIB buffers... Takes existing buffer and
* returns either the buffer or a new one (with old
* one dereferenced).
*/
static inline void
swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
{
memcpy (tmp, d1, bytes);
memcpy (d1, d2, bytes);
memcpy (d2, tmp, bytes);
}
static GstBuffer *
gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
{
buf = gst_buffer_make_writable (buf);
gint y, h = stream->strf.vids->height, w = stream->strf.vids->width;
guint8 *tmp = g_malloc (w);
for (y = 0; y < h / 2; y++) {
swap_line (GST_BUFFER_DATA (buf) + w * y,
GST_BUFFER_DATA (buf) + w * (h - 1 - y), tmp, w);
}
g_free (tmp);
return buf;
}
static GstFlowReturn
gst_avi_demux_process_next_entry (GstAviDemux * avi)
{
@ -2096,6 +2127,9 @@ gst_avi_demux_process_next_entry (GstAviDemux * avi)
avi->index_offset, entry->size, &buf)) != GST_FLOW_OK)
return res;
else {
if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' ')) {
buf = gst_avi_demux_invert (stream, buf);
}
if (!(entry->flags & GST_RIFF_IF_KEYFRAME))
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
GST_BUFFER_TIMESTAMP (buf) = entry->ts;
@ -2175,6 +2209,10 @@ gst_avi_demux_stream_data (GstAviDemux * avi)
} else {
GstClockTime dur_ts;
if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' ')) {
buf = gst_avi_demux_invert (stream, buf);
}
GST_BUFFER_TIMESTAMP (buf) = next_ts;
gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &dur_ts);
GST_BUFFER_DURATION (buf) = dur_ts - next_ts;