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gst/avi/gstavidemux.*: Invert DIB images. Fixes #132341.
Original commit message from CVS: * gst/avi/gstavidemux.c: (gst_avi_demux_add_stream), (swap_line), (gst_avi_demux_invert), (gst_avi_demux_process_next_entry), (gst_avi_demux_stream_data): * gst/avi/gstavidemux.h: Invert DIB images. Fixes #132341.
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3 changed files with 52 additions and 1 deletions
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@ -1,3 +1,11 @@
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2005-01-29 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* gst/avi/gstavidemux.c: (gst_avi_demux_add_stream), (swap_line),
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(gst_avi_demux_invert), (gst_avi_demux_process_next_entry),
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(gst_avi_demux_stream_data):
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* gst/avi/gstavidemux.h:
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Invert DIB images. Fixes #132341.
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2005-01-29 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
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* gst/ffmpegcolorspace/gstffmpegcolorspace.c:
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@ -884,7 +884,7 @@ gst_avi_demux_add_stream (GstAviDemux * avi)
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GstPadTemplate *templ = NULL;
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GstPad *pad;
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avi_stream_context *stream;
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gint blockalign = 0, bitrate = 0;
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gint blockalign = 0, bitrate = 0, width = 0, height = 0;
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guint64 *locations = NULL;
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GstTagList *list = gst_tag_list_new ();
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gboolean have_tag = FALSE;
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@ -1003,6 +1003,8 @@ gst_avi_demux_add_stream (GstAviDemux * avi)
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have_tag = TRUE;
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g_free (codec_name);
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}
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width = strf.vids->width;
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height = strf.vids->height;
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g_free (strf.vids);
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avi->num_v_streams++;
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break;
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@ -1076,6 +1078,8 @@ gst_avi_demux_add_stream (GstAviDemux * avi)
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stream->skip = 0;
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stream->blockalign = blockalign;
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stream->bitrate = bitrate;
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stream->width = width;
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stream->height = height;
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stream->indexes = locations;
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gst_pad_set_element_private (pad, stream);
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avi->num_streams++;
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@ -1984,6 +1988,37 @@ gst_avi_demux_handle_seek (GstAviDemux * avi)
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return TRUE;
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}
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/*
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* Invert DIB buffers... Takes existing buffer and
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* returns either the buffer or a new one (with old
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* one dereferenced).
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*/
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static inline void
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swap_line (guint8 * d1, guint8 * d2, guint8 * tmp, gint bytes)
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{
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memcpy (tmp, d1, bytes);
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memcpy (d1, d2, bytes);
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memcpy (d2, tmp, bytes);
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}
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static GstBuffer *
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gst_avi_demux_invert (avi_stream_context * stream, GstBuffer * buf)
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{
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buf = gst_buffer_copy_on_write (buf);
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gint y, h = stream->height, w = stream->width;
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guint8 *tmp = g_malloc (w);
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for (y = 0; y < h / 2; y++) {
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swap_line (GST_BUFFER_DATA (buf) + w * y,
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GST_BUFFER_DATA (buf) + w * (h - 1 - y), tmp, w);
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}
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g_free (tmp);
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return buf;
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}
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static gboolean
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gst_avi_demux_process_next_entry (GstAviDemux * avi)
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{
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@ -2036,6 +2071,9 @@ gst_avi_demux_process_next_entry (GstAviDemux * avi)
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GST_ERROR ("Failed to read %d bytes of data", entry->size);
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return FALSE;
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}
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if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' ')) {
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buf = gst_avi_demux_invert (stream, buf);
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}
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if (entry->flags & GST_RIFF_IF_KEYFRAME) {
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GST_BUFFER_FLAG_SET (buf, GST_BUFFER_KEY_UNIT);
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}
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@ -2126,6 +2164,10 @@ gst_avi_demux_stream_data (GstAviDemux * avi)
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} else {
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GstClockTime dur_ts;
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if (stream->strh->fcc_handler == GST_MAKE_FOURCC ('D', 'I', 'B', ' ')) {
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buf = gst_avi_demux_invert (stream, buf);
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}
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GST_BUFFER_TIMESTAMP (buf) = next_ts;
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gst_pad_query (stream->pad, GST_QUERY_POSITION, &format, &dur_ts);
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GST_BUFFER_DURATION (buf) = dur_ts - next_ts;
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@ -64,6 +64,7 @@ typedef struct {
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GstCaps *caps;
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gst_riff_strh *strh;
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gint blockalign, bitrate;
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gint width, height;
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/* current position (byte, frame, time) */
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guint current_frame;
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