mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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Fixed buffer strip (safer wil pull and after seek).
Original commit message from CVS: Fixed buffer strip (safer wil pull and after seek).
This commit is contained in:
Edgard Lima
parent
9662a21152
commit
ac04e0124b
3 changed files with 133 additions and 127 deletions
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@ -1,3 +1,9 @@
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2007-11-20 Edgard Lima <edgard.lima@indt.org.br>
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* ext/metadata/gstmetadataparse.c:
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* ext/metadata/gstmetadataparse.h:
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Fixed buffer strip (safer wil pull and after seek).
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2007-11-19 Stefan Kost <ensonic@users.sf.net>
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* gst/equalizer/gstiirequalizer10bands.c:
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@ -163,11 +163,10 @@ static void gst_metadata_parse_send_tags (GstMetadataParse * filter);
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static gboolean gst_metadata_parse_activate (GstPad * pad);
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static gboolean
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gst_metadata_parse_get_strip_range (gint64 * boffset, guint32 * bsize,
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static int
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gst_metadata_parse_get_strip_seg (const gint64 offset, guint32 size,
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const gint64 seg_offset, const guint32 seg_size,
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gint64 * toffset, guint32 * tsize, gint64 * ioffset);
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guint32 * boffset, guint32 * bsize, guint32 * seg_binter);
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static gboolean
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gst_metadata_parse_strip_buffer (GstMetadataParse * filter, gint64 offset,
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GstBuffer ** buf);
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@ -444,10 +443,13 @@ gst_metadata_parse_src_event (GstPad * pad, GstEvent * event)
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case GST_FORMAT_PERCENT:
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if (filter->duration < 0)
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goto done;
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start = start * filter->duration / 100;
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stop = stop * filter->duration / 100;
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break;
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default:
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goto done;
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}
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format = GST_FORMAT_BYTES;
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if (start_type == GST_SEEK_TYPE_CUR)
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start = filter->offset + start;
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@ -565,9 +567,12 @@ gst_metadata_parse_init_members (GstMetadataParse * filter)
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filter->iptc = TRUE;
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filter->xmp = TRUE;
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memset (filter->seg_offset, 0x00, sizeof (filter->seg_offset[0]) * 3);
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memset (filter->seg_offset_orig, 0x00,
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sizeof (filter->seg_offset_orig[0]) * 3);
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memset (filter->seg_size, 0x00, sizeof (filter->seg_size[0]) * 3);
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memset (filter->seg_inject_offset, 0x00,
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sizeof (filter->seg_inject_offset[0]) * 3);
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memset (filter->seg_inject_data, 0x00,
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sizeof (filter->seg_inject_data[0]) * 3);
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memset (filter->seg_inject_size, 0x00,
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@ -848,23 +853,24 @@ gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
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filter->need_more_data = TRUE;
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} else {
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int i, j;
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guint32 bytes_striped;
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filter->num_segs = 0;
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/* FIXME: better design for segments */
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filter->seg_size[0] = filter->parse_data.exif.size;
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filter->seg_offset[0] = filter->parse_data.exif.offset;
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filter->seg_offset_orig[0] = filter->parse_data.exif.offset;
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filter->seg_inject_size[0] = filter->parse_data.exif.size_inject;
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filter->seg_inject_data[0] = filter->parse_data.exif.buffer;
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filter->seg_size[1] = filter->parse_data.iptc.size;
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filter->seg_offset[1] = filter->parse_data.iptc.offset;
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filter->seg_offset_orig[1] = filter->parse_data.iptc.offset;
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filter->seg_inject_size[1] = filter->parse_data.iptc.size_inject;
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filter->seg_inject_data[1] = filter->parse_data.iptc.buffer;
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filter->seg_size[2] = filter->parse_data.xmp.size;
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filter->seg_offset[2] = filter->parse_data.xmp.offset;
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filter->seg_offset_orig[2] = filter->parse_data.xmp.offset;
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filter->seg_inject_size[2] = filter->parse_data.xmp.size_inject;
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filter->seg_inject_data[2] = filter->parse_data.xmp.buffer;
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@ -882,7 +888,7 @@ gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
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for (j = i + 1; j < 3; ++j) {
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if (filter->seg_size[j])
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if (filter->seg_size[min] == 0
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|| filter->seg_offset[j] < filter->seg_offset[min])
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|| filter->seg_offset_orig[j] < filter->seg_offset_orig[min])
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min = j;
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}
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if (min != i) {
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@ -890,13 +896,13 @@ gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
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guint32 aux_size;
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guint8 *aux_data;
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aux_offset = filter->seg_offset[i];
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aux_offset = filter->seg_offset_orig[i];
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aux_size = filter->seg_size[i];
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filter->seg_offset[i] = filter->seg_offset[min];
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filter->seg_offset_orig[i] = filter->seg_offset_orig[min];
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filter->seg_size[i] = filter->seg_size[min];
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filter->seg_offset[min] = aux_offset;
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filter->seg_offset_orig[min] = aux_offset;
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filter->seg_size[min] = aux_size;
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aux_size = filter->seg_inject_size[i];
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@ -909,6 +915,15 @@ gst_metadata_parse_parse (GstMetadataParse * filter, const guint8 * buf,
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}
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}
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bytes_striped = 0;
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/* calculate the new position off injected chunks */
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for (i = 0; i < filter->num_segs; ++i) {
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filter->seg_inject_offset[i] =
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filter->seg_offset_orig[i] - bytes_striped;
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bytes_striped += filter->seg_size[i] - filter->seg_inject_size[i];
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}
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}
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filter->state = MT_STATE_PARSED;
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@ -1145,68 +1160,77 @@ done:
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}
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/*
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* Returns FALSE if nothing has stripped, TRUE if otherwise
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* offset - offset of buffer in original stream
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* size - size of buffer
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* seg_offset - offset of segment in original stream
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* seg_size - size of segment
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* boffset - offset inside buffer where segment starts (-1 for no intersection)
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* bsize - size of intersection
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* seg_binter - if segment start inside buffer is zero. if segment start before
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* buffer and intersect, it is the offset inside segment.
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*
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* ret:
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* -1 - segment before buffer
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* 0 - segment intersects
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* 1 - segment after buffer
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*/
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static gboolean
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gst_metadata_parse_get_strip_range (gint64 * boffset, guint32 * bsize,
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static int
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gst_metadata_parse_get_strip_seg (const gint64 offset, guint32 size,
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const gint64 seg_offset, const guint32 seg_size,
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gint64 * toffset, guint32 * tsize, gint64 * ioffset)
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guint32 * boffset, guint32 * bsize, guint32 * seg_binter)
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{
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int ret = -1;
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gboolean ret = FALSE;
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*boffset = -1;
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*bsize = 0;
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*seg_binter = -1;
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if (seg_size == 0 || *bsize == 0)
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goto done;
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/* segment after buffer */
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if (seg_offset > *boffset + *bsize) {
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*bsize = 0;
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/* all segment after buffer */
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if (seg_offset >= offset + size) {
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ret = 1;
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goto done;
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}
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if (seg_offset < *boffset) {
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if (seg_offset < offset) {
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/* segment start somewhere before buffer */
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guint32 cut_size;
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/* all segment before buffer */
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if (seg_offset + seg_size <= *boffset) {
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*tsize = *bsize;
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*bsize = 0;
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*toffset = *boffset;
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if (seg_offset + seg_size <= offset) {
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ret = -1;
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goto done;
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}
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cut_size = seg_size - (*boffset - seg_offset);
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*seg_binter = offset - seg_offset;
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*boffset = 0;
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if (cut_size >= *bsize) {
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/* all buffer striped out */
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*bsize = 0;
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*tsize = 0;
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/* FIXME : optimize to >= size -> = size */
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if (seg_offset + seg_size >= offset + size) {
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/* segment cover all buffer */
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*bsize = size;
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} else {
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/* just beginning buffers striped */
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*toffset = *boffset + cut_size;
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*tsize = *bsize - cut_size;
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*bsize = 0;
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/* segment goes from start of buffer to somewhere before end */
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*bsize = seg_size - *seg_binter;
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}
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ret = 0;
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} else {
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/* segment start somewhere into buffer */
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*ioffset = seg_offset;
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if (seg_offset + seg_size >= *boffset + *bsize) {
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/* strip just tail */
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*bsize = seg_offset - *boffset;
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*boffset = seg_offset - offset;
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*seg_binter = 0;
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if (seg_offset + seg_size <= offset + size) {
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/* all segment into buffer */
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*bsize = seg_size;
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} else {
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/* strip the middle */
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*toffset = seg_offset + seg_size;
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*tsize = *boffset + *bsize - seg_offset - seg_size;
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*bsize = seg_offset - *boffset;
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*bsize = size - *boffset;
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}
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}
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ret = 0;
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ret = TRUE;
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}
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done:
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@ -1224,110 +1248,85 @@ gst_metadata_parse_strip_buffer (GstMetadataParse * filter, gint64 offset,
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GstBuffer ** buf)
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{
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const gint64 *seg_offset = filter->seg_offset_orig;
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const guint32 *seg_size = filter->seg_size;
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const guint32 *seg_inject_size = filter->seg_inject_size;
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const guint8 **seg_inject_data = filter->seg_inject_data;
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const size = GST_BUFFER_SIZE (*buf);
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gint64 boffset[3];
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guint32 bsize[3];
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gint64 toffset[3];
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guint32 tsize[3];
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gint64 ioffset[3];
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const gint64 *seg_offset = filter->seg_offset;
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const guint32 *seg_size = filter->seg_size;
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guint32 seg_binter[3];
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int i;
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gboolean ret = FALSE;
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guint32 new_size = 0;
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if (filter->num_segs == 0)
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goto done;
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memset (bsize, 0x00, sizeof (bsize));
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memset (tsize, 0x00, sizeof (tsize));
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for (i = 0; i < filter->num_segs; ++i) {
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ioffset[i] = -1;
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}
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int res;
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boffset[0] = offset;
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new_size = bsize[0] = GST_BUFFER_SIZE (*buf);
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i = 0;
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res = gst_metadata_parse_get_strip_seg (offset, size,
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seg_offset[i], seg_size[i], &boffset[i], &bsize[i], &seg_binter[i]);
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for (i = 0; i < filter->num_segs; ++i) {
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guint32 striped_size;
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striped_size = bsize[i];
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if (gst_metadata_parse_get_strip_range (&boffset[i], &bsize[i],
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seg_offset[i], seg_size[i], &toffset[i], &tsize[i], &ioffset[i])) {
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ret = TRUE;
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new_size -= (striped_size - (bsize[i] + tsize[i]));
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}
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if (i + 1 < filter->num_segs) {
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if (tsize[i]) {
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boffset[i + 1] = toffset[i];
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bsize[i + 1] = GST_BUFFER_SIZE (*buf) - (toffset[i] - offset);
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tsize[i] = 0;
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} else {
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/* buffer already consumed */
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break;
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}
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}
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if (new_size == 0) {
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/* all buffer striped already */
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/* segment is after size (segments are sorted) */
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if (res > 0)
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break;
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}
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if (res == 0)
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ret = TRUE;
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}
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/* segments must be sorted by offset to make this copy */
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if (ret) {
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if (new_size == 0) {
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gst_buffer_unref (*buf);
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*buf = NULL;
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} else {
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GstBuffer *new_buf;
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guint8 *data;
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for (i = 0; i < filter->num_segs; ++i) {
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if (filter->seg_inject_size[i] == 0)
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ioffset[i] = -1;
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else
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new_size += filter->seg_inject_size[i];
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}
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guint8 *data;
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guint32 moved = 0;
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if (GST_BUFFER_SIZE (new_buf) < new_size) {
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/* FIXME: alloc more memory here */
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}
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if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_READONLY)) {
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GstBuffer *new_buf = gst_buffer_copy (*buf);
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/* FIXME: try to use buffer data in place */
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new_buf = gst_buffer_copy (*buf);
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data = GST_BUFFER_DATA (new_buf);
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GST_BUFFER_SIZE (new_buf) = new_size;
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for (i = 0; i < filter->num_segs; ++i) {
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if (bsize[i]) {
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memcpy (data,
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GST_BUFFER_DATA (*buf) + (boffset[i] - offset), bsize[i]);
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data += bsize[i];
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}
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if (ioffset[i] >= 0) {
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memcpy (data, filter->seg_inject_data[i], filter->seg_inject_size[i]);
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data += filter->seg_inject_size[i];
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}
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if (tsize[i]) {
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memcpy (data,
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GST_BUFFER_DATA (*buf) + (toffset[i] - offset), tsize[i]);
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data += tsize[i];
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}
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}
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gst_buffer_unref (*buf);
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*buf = new_buf;
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GST_BUFFER_FLAG_UNSET (*buf, GST_BUFFER_FLAG_READONLY);
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}
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}
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data = GST_BUFFER_DATA (*buf);
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for (i = 0; i < filter->num_segs; ++i) {
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/* intersect */
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if (bsize[i]) {
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/* has data to inject */
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if (seg_inject_size[i]) {
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/* has data to inject here */
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if (seg_binter[i] < seg_inject_size[i]) {
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const guint32 inject_size = seg_inject_size[i] - seg_binter[i];
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memcpy (data + boffset[i], seg_inject_data[i] + seg_binter[i],
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inject_size);
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boffset[i] += inject_size;
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bsize[i] -= inject_size;
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}
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}
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if (bsize[i]) {
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/* if even inject there is still thing to remove */
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memmove (data + boffset[i] - moved,
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data + boffset[i] + bsize[i] - moved,
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size - boffset[i] - bsize[i] + moved);
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moved += bsize[i];
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}
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}
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}
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GST_BUFFER_SIZE (*buf) -= moved;
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}
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done:
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@ -1347,10 +1346,10 @@ gst_metadata_parse_translate_pos (GstMetadataParse * filter, gint64 pos,
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*orig_pos = 0;
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for (i = 0; i < filter->num_segs; ++i) {
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if (filter->seg_offset[i] > pos) {
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if (filter->seg_offset_orig[i] > pos) {
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break;
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}
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*orig_pos += filter->seg_size[i];
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*orig_pos += filter->seg_size[i] - filter->seg_inject_size[i];
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}
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*orig_pos += pos;
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@ -79,9 +79,10 @@ struct _GstMetadataParse
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gboolean iptc;
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gboolean xmp;
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gint64 seg_offset[3];
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gint64 seg_offset_orig[3]; /* offset in chunk in original stream */
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guint32 seg_size[3];
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gint64 seg_inject_offset[3]; /* offset of chunk in resulting stream */
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guint32 seg_inject_size[3];
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guint8 * seg_inject_data[3];
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