mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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1821 lines
50 KiB
C
1821 lines
50 KiB
C
/* GStreamer
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* Copyright (C) 2010 Oblong Industries, Inc.
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* Copyright (C) 2010 Collabora Multimedia
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "jp2kcodestream.h"
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GST_DEBUG_CATEGORY_EXTERN (gst_jp2k_decimator_debug);
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#define GST_CAT_DEFAULT gst_jp2k_decimator_debug
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/* Delimiting markers and marker segments */
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#define MARKER_SOC 0xFF4F
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#define MARKER_SOT 0xFF90
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#define MARKER_SOD 0xFF93
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#define MARKER_EOC 0xFFD9
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/* Fixed information marker segments */
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#define MARKER_SIZ 0xFF51
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/* Functional marker segments */
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#define MARKER_COD 0xFF52
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#define MARKER_COC 0xFF53
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#define MARKER_RGN 0xFF5E
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#define MARKER_QCD 0xFF5C
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#define MARKER_QCC 0xFF5D
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#define MARKER_POC 0xFF5F
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/* Pointer marker segments */
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#define MARKER_PLM 0xFF57
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#define MARKER_PLT 0xFF58
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#define MARKER_PPM 0xFF60
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#define MARKER_PPT 0xFF61
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#define MARKER_TLM 0xFF55
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/* In-bit-stream markers and marker segments */
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#define MARKER_SOP 0xFF91
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#define MARKER_EPH 0xFF92
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/* Informational marker segments */
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#define MARKER_CRG 0xFF63
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#define MARKER_COM 0xFF64
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static void
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packet_iterator_changed_resolution_or_component (PacketIterator * it)
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{
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gint tx0, tx1, ty0, ty1;
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gint tcx0, tcx1, tcy0, tcy1;
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gint trx0, trx1, try0, try1;
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gint tpx0, tpx1, tpy0, tpy1;
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gint two_nl_r;
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gint two_ppx, two_ppy;
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gint xr, yr;
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guint8 *PPx, *PPy;
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tx0 = it->tile->tx0;
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tx1 = it->tile->tx1;
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ty0 = it->tile->ty0;
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ty1 = it->tile->ty1;
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it->two_nl_r = two_nl_r = (1 << (it->n_resolutions - it->cur_resolution - 1));
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PPx = it->tile->cod ? it->tile->cod->PPx : it->header->cod.PPx;
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PPy = it->tile->cod ? it->tile->cod->PPy : it->header->cod.PPy;
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it->two_ppx = two_ppx = (1 << (PPx ? PPx[it->cur_resolution] : 15));
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it->two_ppy = two_ppy = (1 << (PPy ? PPy[it->cur_resolution] : 15));
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it->xr = xr = it->header->siz.components[it->cur_component].xr;
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it->yr = yr = it->header->siz.components[it->cur_component].yr;
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it->tcx0 = tcx0 = (tx0 + xr - 1) / xr;
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it->tcx1 = tcx1 = (tx1 + xr - 1) / xr;
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it->tcy0 = tcy0 = (ty0 + yr - 1) / yr;
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it->tcy1 = tcy1 = (ty1 + yr - 1) / yr;
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it->trx0 = trx0 = (tcx0 + two_nl_r - 1) / two_nl_r;
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it->trx1 = trx1 = (tcx1 + two_nl_r - 1) / two_nl_r;
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it->try0 = try0 = (tcy0 + two_nl_r - 1) / two_nl_r;
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it->try1 = try1 = (tcy1 + two_nl_r - 1) / two_nl_r;
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it->tpx0 = tpx0 = two_ppx * (trx0 / two_ppx);
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it->tpx1 = tpx1 = two_ppx * ((trx1 + two_ppx - 1) / two_ppx);
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it->tpy0 = tpy0 = two_ppy * (try0 / two_ppy);
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it->tpy1 = tpy1 = two_ppy * ((try1 + two_ppy - 1) / two_ppy);
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it->n_precincts_w = (trx0 == trx1) ? 0 : (tpx1 - tpx0) / two_ppx;
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it->n_precincts_h = (try0 == try1) ? 0 : (tpy1 - tpy0) / two_ppy;
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it->n_precincts = it->n_precincts_w * it->n_precincts_h;
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}
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static gboolean
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packet_iterator_next_lrcp (PacketIterator * it)
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{
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g_return_val_if_fail (it->cur_layer < it->n_layers, FALSE);
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if (it->first) {
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packet_iterator_changed_resolution_or_component (it);
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it->first = FALSE;
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return TRUE;
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}
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it->cur_precinct += 1;
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if (it->cur_precinct >= it->n_precincts) {
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it->cur_precinct = 0;
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it->cur_component += 1;
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if (it->cur_component >= it->n_components) {
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it->cur_component = 0;
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it->cur_resolution += 1;
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if (it->cur_resolution >= it->n_resolutions) {
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it->cur_resolution = 0;
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it->cur_layer += 1;
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if (it->cur_layer >= it->n_layers) {
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it->cur_packet++;
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return FALSE;
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}
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}
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}
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packet_iterator_changed_resolution_or_component (it);
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}
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it->cur_packet++;
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return TRUE;
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}
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static gboolean
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packet_iterator_next_rlcp (PacketIterator * it)
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{
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g_return_val_if_fail (it->cur_resolution < it->n_resolutions, FALSE);
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if (it->first) {
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packet_iterator_changed_resolution_or_component (it);
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it->first = FALSE;
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return TRUE;
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}
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it->cur_precinct += 1;
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if (it->cur_precinct >= it->n_precincts) {
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it->cur_precinct = 0;
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it->cur_component += 1;
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if (it->cur_component >= it->n_components) {
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it->cur_component = 0;
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it->cur_layer += 1;
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if (it->cur_layer >= it->n_layers) {
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it->cur_layer = 0;
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it->cur_resolution += 1;
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if (it->cur_resolution >= it->n_resolutions) {
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it->cur_packet++;
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return FALSE;
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}
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}
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}
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packet_iterator_changed_resolution_or_component (it);
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}
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it->cur_packet++;
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return TRUE;
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}
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static gboolean
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packet_iterator_next_rpcl (PacketIterator * it)
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{
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g_return_val_if_fail (it->cur_resolution < it->n_resolutions, FALSE);
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if (it->first) {
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packet_iterator_changed_resolution_or_component (it);
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it->first = FALSE;
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return TRUE;
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}
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it->cur_layer += 1;
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if (it->cur_layer >= it->n_layers) {
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it->cur_layer = 0;
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/* Loop and advance the position and resolution until
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* we find the next precinct
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*/
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while (TRUE) {
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it->cur_component += 1;
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if (it->cur_component >= it->n_components) {
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it->cur_component = 0;
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it->cur_x += it->x_step - (it->cur_x % it->x_step);
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if (it->cur_x >= it->tx1) {
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it->cur_x = it->tx0;
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it->cur_y += it->y_step - (it->cur_y % it->y_step);
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if (it->cur_y >= it->ty1) {
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it->cur_y = it->ty0;
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it->cur_resolution += 1;
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if (it->cur_resolution >= it->n_resolutions) {
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it->cur_packet++;
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return FALSE;
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}
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}
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}
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}
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packet_iterator_changed_resolution_or_component (it);
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if (((it->cur_y % (it->yr * it->two_ppy * it->two_nl_r) == 0)
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|| (it->cur_y == it->ty0
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&& ((it->try0 * it->two_nl_r) %
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(it->two_ppy * it->two_nl_r) != 0)))
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&& ((it->cur_x % (it->xr * it->two_ppx * it->two_nl_r) == 0)
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|| (it->cur_x == it->tx0
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&& ((it->trx0 * it->two_nl_r) %
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(it->two_ppx * it->two_nl_r) != 0)))) {
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gint k;
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k = (((it->cur_x + it->xr * it->two_nl_r - 1) /
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(it->xr * it->two_nl_r)) / it->two_ppx) -
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(it->trx0 / it->two_ppx) +
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it->n_precincts_w *
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(((it->cur_y + it->yr * it->two_nl_r - 1) /
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(it->yr * it->two_nl_r)) / it->two_ppy);
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g_assert (k < it->n_precincts);
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it->cur_precinct = k;
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break;
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}
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}
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}
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it->cur_packet++;
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return TRUE;
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}
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static gboolean
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packet_iterator_next_pcrl (PacketIterator * it)
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{
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g_return_val_if_fail (it->cur_resolution < it->n_resolutions, FALSE);
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if (it->first) {
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it->first = FALSE;
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return TRUE;
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}
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it->cur_layer += 1;
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if (it->cur_layer >= it->n_layers) {
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it->cur_layer = 0;
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/* Loop and advance the position and resolution until
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* we find the next precinct
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*/
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while (TRUE) {
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it->cur_resolution += 1;
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if (it->cur_resolution >= it->n_resolutions) {
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it->cur_resolution = 0;
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it->cur_component += 1;
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if (it->cur_component >= it->n_components) {
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it->cur_x += it->x_step - (it->cur_x % it->x_step);
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if (it->cur_x >= it->tx1) {
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it->cur_x = it->tx0;
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it->cur_y += it->y_step - (it->cur_y % it->y_step);
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if (it->cur_y >= it->ty1) {
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it->cur_packet++;
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return FALSE;
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}
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}
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}
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}
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packet_iterator_changed_resolution_or_component (it);
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if (((it->cur_y % (it->yr * it->two_ppy * it->two_nl_r) == 0)
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|| (it->cur_y == it->ty0
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&& ((it->try0 * it->two_nl_r) %
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(it->two_ppy * it->two_nl_r) != 0)))
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&& ((it->cur_x % (it->xr * it->two_ppx * it->two_nl_r) == 0)
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|| (it->cur_x == it->tx0
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&& ((it->trx0 * it->two_nl_r) %
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(it->two_ppx * it->two_nl_r) != 0)))) {
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gint k;
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k = (((it->cur_x + it->xr * it->two_nl_r - 1) /
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(it->xr * it->two_nl_r)) / it->two_ppx) -
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(it->trx0 / it->two_ppx) +
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it->n_precincts_w *
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(((it->cur_y + it->yr * it->two_nl_r - 1) /
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(it->yr * it->two_nl_r)) / it->two_ppy);
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g_assert (k < it->n_precincts);
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it->cur_precinct = k;
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break;
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}
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}
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}
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it->cur_packet++;
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return TRUE;
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}
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static gboolean
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packet_iterator_next_cprl (PacketIterator * it)
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{
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g_return_val_if_fail (it->cur_resolution < it->n_resolutions, FALSE);
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if (it->first) {
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packet_iterator_changed_resolution_or_component (it);
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it->first = FALSE;
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return TRUE;
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}
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it->cur_layer += 1;
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if (it->cur_layer >= it->n_layers) {
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it->cur_layer = 0;
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/* Loop and advance the position and resolution until
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* we find the next precinct
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*/
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while (TRUE) {
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it->cur_resolution += 1;
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if (it->cur_resolution >= it->n_resolutions) {
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it->cur_resolution = 0;
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it->cur_x += it->x_step - (it->cur_x % it->x_step);
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if (it->cur_x >= it->tx1) {
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it->cur_x = it->tx0;
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it->cur_y += it->y_step - (it->cur_y % it->y_step);
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if (it->cur_y >= it->ty1) {
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it->cur_y = it->ty0;
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it->cur_component += 1;
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if (it->cur_component >= it->n_components) {
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it->cur_packet++;
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return FALSE;
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}
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}
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}
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}
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packet_iterator_changed_resolution_or_component (it);
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if (((it->cur_y % (it->yr * it->two_ppy * it->two_nl_r) == 0)
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|| (it->cur_y == it->ty0
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&& ((it->try0 * it->two_nl_r) %
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(it->two_ppy * it->two_nl_r) != 0)))
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&& ((it->cur_x % (it->xr * it->two_ppx * it->two_nl_r) == 0)
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|| (it->cur_x == it->tx0
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&& ((it->trx0 * it->two_nl_r) %
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(it->two_ppx * it->two_nl_r) != 0)))) {
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gint k;
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k = (((it->cur_x + it->xr * it->two_nl_r - 1) /
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(it->xr * it->two_nl_r)) / it->two_ppx) -
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(it->trx0 / it->two_ppx) +
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it->n_precincts_w *
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(((it->cur_y + it->yr * it->two_nl_r - 1) /
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(it->yr * it->two_nl_r)) / it->two_ppy);
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g_assert (k < it->n_precincts);
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it->cur_precinct = k;
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break;
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}
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}
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}
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it->cur_packet++;
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return TRUE;
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}
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static GstFlowReturn
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init_packet_iterator (GstJP2kDecimator * self, PacketIterator * it,
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const MainHeader * header, const Tile * tile)
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{
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ProgressionOrder order;
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gint i, j;
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memset (it, 0, sizeof (PacketIterator));
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it->header = header;
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it->tile = tile;
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it->first = TRUE;
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it->n_layers = (tile->cod) ? tile->cod->n_layers : header->cod.n_layers;
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it->n_resolutions =
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1 +
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((tile->cod) ? tile->cod->n_decompositions : header->cod.
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n_decompositions);
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it->n_components = header->siz.n_components;
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it->tx0 = tile->tx0;
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it->tx1 = tile->tx1;
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it->ty0 = tile->ty0;
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it->ty1 = tile->ty1;
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it->cur_x = it->tx0;
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it->cur_y = it->ty0;
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/* Calculate the step sizes for the position-dependent progression orders */
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it->x_step = it->y_step = 0;
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for (i = 0; i < it->n_components; i++) {
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gint xr, yr;
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xr = header->siz.components[i].xr;
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yr = header->siz.components[i].yr;
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for (j = 0; j < it->n_resolutions; j++) {
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gint xs, ys;
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guint8 PPx, PPy;
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if (tile->cod) {
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PPx = (tile->cod->PPx) ? tile->cod->PPx[j] : 15;
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PPy = (tile->cod->PPy) ? tile->cod->PPy[j] : 15;
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} else {
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PPx = (header->cod.PPx) ? header->cod.PPx[j] : 15;
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PPy = (header->cod.PPy) ? header->cod.PPy[j] : 15;
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}
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xs = xr * (1 << (PPx + it->n_resolutions - j - 1));
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ys = yr * (1 << (PPy + it->n_resolutions - j - 1));
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if (it->x_step == 0 || it->x_step > xs)
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it->x_step = xs;
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if (it->y_step == 0 || it->y_step > ys)
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it->y_step = ys;
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}
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}
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order =
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(tile->cod) ? tile->cod->progression_order : header->cod.
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progression_order;
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if (order == PROGRESSION_ORDER_LRCP) {
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it->next = packet_iterator_next_lrcp;
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} else if (order == PROGRESSION_ORDER_RLCP) {
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it->next = packet_iterator_next_rlcp;
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} else if (order == PROGRESSION_ORDER_RPCL) {
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it->next = packet_iterator_next_rpcl;
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} else if (order == PROGRESSION_ORDER_PCRL) {
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it->next = packet_iterator_next_pcrl;
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} else if (order == PROGRESSION_ORDER_CPRL) {
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it->next = packet_iterator_next_cprl;
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} else {
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GST_ERROR_OBJECT (self, "Progression order %d not supported", order);
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return GST_FLOW_ERROR;
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}
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return GST_FLOW_OK;
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}
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static GstFlowReturn
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parse_siz (GstJP2kDecimator * self, GstByteReader * reader,
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ImageSize * siz, guint16 length)
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{
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gint i;
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if (length < 38) {
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GST_ERROR_OBJECT (self, "Invalid SIZ marker");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
siz->caps = gst_byte_reader_get_uint16_be_unchecked (reader);
|
|
siz->x = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->y = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->xo = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->yo = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->xt = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->yt = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->xto = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->yto = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
siz->n_components = gst_byte_reader_get_uint16_be_unchecked (reader);
|
|
|
|
if (length < 38 + 3 * siz->n_components) {
|
|
GST_ERROR_OBJECT (self, "Invalid SIZ marker");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
siz->components = g_slice_alloc (sizeof (ComponentSize) * siz->n_components);
|
|
for (i = 0; i < siz->n_components; i++) {
|
|
siz->components[i].s = gst_byte_reader_get_uint8_unchecked (reader);
|
|
siz->components[i].xr = gst_byte_reader_get_uint8_unchecked (reader);
|
|
siz->components[i].yr = gst_byte_reader_get_uint8_unchecked (reader);
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static guint
|
|
sizeof_siz (GstJP2kDecimator * self, const ImageSize * siz)
|
|
{
|
|
return 2 + 38 + 3 * siz->n_components;
|
|
}
|
|
|
|
static void
|
|
reset_siz (GstJP2kDecimator * self, ImageSize * siz)
|
|
{
|
|
if (siz->components)
|
|
g_slice_free1 (sizeof (ComponentSize) * siz->n_components, siz->components);
|
|
memset (siz, 0, sizeof (ImageSize));
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_siz (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const ImageSize * siz)
|
|
{
|
|
gint i;
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer,
|
|
2 + 38 + 3 * siz->n_components)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_SIZ);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, 38 + 3 * siz->n_components);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, siz->caps);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->x);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->y);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->xo);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->yo);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->xt);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->yt);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->xto);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, siz->yto);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, siz->n_components);
|
|
|
|
for (i = 0; i < siz->n_components; i++) {
|
|
gst_byte_writer_put_uint8_unchecked (writer, siz->components[i].s);
|
|
gst_byte_writer_put_uint8_unchecked (writer, siz->components[i].xr);
|
|
gst_byte_writer_put_uint8_unchecked (writer, siz->components[i].yr);
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
parse_cod (GstJP2kDecimator * self, GstByteReader * reader,
|
|
CodingStyleDefault * cod, guint16 length)
|
|
{
|
|
guint8 Scod;
|
|
|
|
if (length < 12) {
|
|
GST_ERROR_OBJECT (self, "Invalid COD marker");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
Scod = gst_byte_reader_get_uint8_unchecked (reader);
|
|
cod->sop = ! !(Scod & 0x02);
|
|
cod->eph = ! !(Scod & 0x04);
|
|
|
|
/* SGcod */
|
|
cod->progression_order = gst_byte_reader_get_uint8_unchecked (reader);
|
|
cod->n_layers = gst_byte_reader_get_uint16_be_unchecked (reader);
|
|
cod->multi_component_transform = gst_byte_reader_get_uint8_unchecked (reader);
|
|
|
|
/* SPcod */
|
|
cod->n_decompositions = gst_byte_reader_get_uint8_unchecked (reader);
|
|
cod->xcb = gst_byte_reader_get_uint8_unchecked (reader) + 2;
|
|
cod->ycb = gst_byte_reader_get_uint8_unchecked (reader) + 2;
|
|
cod->code_block_style = gst_byte_reader_get_uint8_unchecked (reader);
|
|
cod->transformation = gst_byte_reader_get_uint8_unchecked (reader);
|
|
|
|
if ((Scod & 0x01)) {
|
|
gint i;
|
|
/* User defined precincts */
|
|
|
|
if (length < 12 + (Scod & 0x01) * (cod->n_decompositions + 1)) {
|
|
GST_ERROR_OBJECT (self, "Invalid COD marker");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
cod->PPx = g_slice_alloc (sizeof (guint8) * (cod->n_decompositions + 1));
|
|
for (i = 0; i < cod->n_decompositions + 1; i++) {
|
|
guint8 v = gst_byte_reader_get_uint8_unchecked (reader);
|
|
cod->PPx[i] = (v & 0x0f);
|
|
cod->PPy[i] = (v >> 4);
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static guint
|
|
sizeof_cod (GstJP2kDecimator * self, const CodingStyleDefault * cod)
|
|
{
|
|
return 2 + 12 + (cod->PPx ? (cod->n_decompositions + 1) : 0);
|
|
}
|
|
|
|
static void
|
|
reset_cod (GstJP2kDecimator * self, CodingStyleDefault * cod)
|
|
{
|
|
if (cod->PPx)
|
|
g_slice_free1 (sizeof (guint8) * (cod->n_decompositions + 1), cod->PPx);
|
|
if (cod->PPy)
|
|
g_slice_free1 (sizeof (guint8) * (cod->n_decompositions + 1), cod->PPy);
|
|
memset (cod, 0, sizeof (CodingStyleDefault));
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_cod (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const CodingStyleDefault * cod)
|
|
{
|
|
guint tmp;
|
|
|
|
tmp = 12 + (cod->PPx ? (1 + cod->n_decompositions) : 0);
|
|
if (!gst_byte_writer_ensure_free_space (writer, tmp)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_COD);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, tmp);
|
|
|
|
/* Scod */
|
|
tmp =
|
|
(cod->PPx ? 0x01 : 0x00) | (cod->sop ? 0x02 : 0x00) | (cod->
|
|
eph ? 0x04 : 0x00);
|
|
gst_byte_writer_put_uint8_unchecked (writer, tmp);
|
|
|
|
/* SGcod */
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->progression_order);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, cod->n_layers);
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->multi_component_transform);
|
|
|
|
/* SPcod */
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->n_decompositions);
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->xcb - 2);
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->ycb - 2);
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->code_block_style);
|
|
gst_byte_writer_put_uint8_unchecked (writer, cod->transformation);
|
|
|
|
if (cod->PPx) {
|
|
gint i;
|
|
|
|
for (i = 0; i < cod->n_decompositions + 1; i++) {
|
|
tmp = (cod->PPx[i]) | (cod->PPy[i] << 4);
|
|
gst_byte_writer_put_uint8_unchecked (writer, tmp);
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
parse_plt (GstJP2kDecimator * self, GstByteReader * reader,
|
|
PacketLengthTilePart * plt, guint length)
|
|
{
|
|
guint32 n;
|
|
guint8 b = 0;
|
|
gint i;
|
|
|
|
if (length < 3) {
|
|
GST_ERROR_OBJECT (self, "Invalid PLT");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
plt->index = gst_byte_reader_get_uint8_unchecked (reader);
|
|
plt->packet_lengths = g_array_new (FALSE, FALSE, sizeof (guint32));
|
|
|
|
length -= 3;
|
|
|
|
n = 0;
|
|
for (i = 0; i < length; i++) {
|
|
b = gst_byte_reader_get_uint8_unchecked (reader);
|
|
|
|
if ((n & 0xfe000000)) {
|
|
GST_ERROR_OBJECT (self, "PLT element overflow");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
n = (n << 7) | (b & 0x7f);
|
|
if ((b & 0x80) == 0x00) {
|
|
g_array_append_val (plt->packet_lengths, n);
|
|
n = 0;
|
|
}
|
|
}
|
|
|
|
if ((b & 0x80) != 0x00) {
|
|
GST_ERROR_OBJECT (self, "Truncated PLT");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static guint
|
|
sizeof_plt (GstJP2kDecimator * self, const PacketLengthTilePart * plt)
|
|
{
|
|
guint size = 2 + 3;
|
|
gint i, n;
|
|
|
|
n = plt->packet_lengths->len;
|
|
for (i = 0; i < n; i++) {
|
|
guint32 len = g_array_index (plt->packet_lengths, guint32, i);
|
|
|
|
if (len < (1 << 7)) {
|
|
size += 1;
|
|
} else if (len < (1 << 14)) {
|
|
size += 2;
|
|
} else if (len < (1 << 21)) {
|
|
size += 3;
|
|
} else if (len < (1 << 28)) {
|
|
size += 4;
|
|
} else {
|
|
size += 5;
|
|
}
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void
|
|
reset_plt (GstJP2kDecimator * self, PacketLengthTilePart * plt)
|
|
{
|
|
if (plt->packet_lengths)
|
|
g_array_free (plt->packet_lengths, TRUE);
|
|
memset (plt, 0, sizeof (PacketLengthTilePart));
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_plt (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const PacketLengthTilePart * plt)
|
|
{
|
|
gint i, n;
|
|
guint plt_start_pos, plt_end_pos;
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer, 2 + 2 + 1)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_PLT);
|
|
plt_start_pos = gst_byte_writer_get_pos (writer);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, 0);
|
|
|
|
gst_byte_writer_put_uint8_unchecked (writer, plt->index);
|
|
|
|
n = plt->packet_lengths->len;
|
|
for (i = 0; i < n; i++) {
|
|
guint32 len = g_array_index (plt->packet_lengths, guint32, i);
|
|
|
|
/* FIXME: Write multiple plt here */
|
|
if (gst_byte_writer_get_pos (writer) - plt_start_pos > 65535 - 5) {
|
|
GST_ERROR_OBJECT (self, "Too big PLT");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (len < (1 << 7)) {
|
|
if (!gst_byte_writer_ensure_free_space (writer, 1)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
gst_byte_writer_put_uint8_unchecked (writer, (0x00 | (len & 0x7f)));
|
|
} else if (len < (1 << 14)) {
|
|
if (!gst_byte_writer_ensure_free_space (writer, 2)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 7) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer, (0x00 | (len & 0x7f)));
|
|
} else if (len < (1 << 21)) {
|
|
if (!gst_byte_writer_ensure_free_space (writer, 3)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 14) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 7) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer, (0x00 | (len & 0x7f)));
|
|
} else if (len < (1 << 28)) {
|
|
if (!gst_byte_writer_ensure_free_space (writer, 4)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 21) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 14) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 7) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer, (0x00 | (len & 0x7f)));
|
|
} else {
|
|
if (!gst_byte_writer_ensure_free_space (writer, 5)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 28) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 21) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 14) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer,
|
|
(0x80 | ((len >> 7) & 0x7f)));
|
|
gst_byte_writer_put_uint8_unchecked (writer, (0x00 | (len & 0x7f)));
|
|
}
|
|
}
|
|
|
|
plt_end_pos = gst_byte_writer_get_pos (writer);
|
|
gst_byte_writer_set_pos (writer, plt_start_pos);
|
|
if (!gst_byte_writer_put_uint16_be (writer, plt_end_pos - plt_start_pos)) {
|
|
GST_ERROR_OBJECT (self, "Not enough space to write plt size");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_set_pos (writer, plt_end_pos);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
parse_packet (GstJP2kDecimator * self, GstByteReader * reader,
|
|
const MainHeader * header, Tile * tile, const PacketIterator * it)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint16 marker = 0, length;
|
|
guint16 seqno = 0;
|
|
guint packet_start_pos;
|
|
const guint8 *packet_start_data;
|
|
gboolean sop, eph;
|
|
PacketLengthTilePart *plt = NULL;
|
|
|
|
sop = (tile->cod) ? tile->cod->sop : header->cod.sop;
|
|
eph = (tile->cod) ? tile->cod->eph : header->cod.eph;
|
|
if (tile->plt) {
|
|
if (g_list_length (tile->plt) > 1) {
|
|
GST_ERROR_OBJECT (self,
|
|
"Only a single PLT per tile is supported currently");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
plt = tile->plt->data;
|
|
}
|
|
|
|
if (plt) {
|
|
guint32 length;
|
|
Packet *p;
|
|
|
|
if (plt->packet_lengths->len <= it->cur_packet) {
|
|
GST_ERROR_OBJECT (self, "Truncated PLT");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
length = g_array_index (plt->packet_lengths, guint32, it->cur_packet);
|
|
|
|
if (gst_byte_reader_get_remaining (reader) < length) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
p = g_slice_new0 (Packet);
|
|
|
|
/* If there is a SOP keep the seqno */
|
|
if (sop && length > 6) {
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (marker == MARKER_SOP) {
|
|
guint16 dummy;
|
|
|
|
gst_byte_reader_skip_unchecked (reader, 2);
|
|
|
|
if (!gst_byte_reader_get_uint16_be (reader, &dummy)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_byte_reader_get_uint16_be (reader, &seqno)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 6;
|
|
p->sop = TRUE;
|
|
p->eph = eph;
|
|
p->seqno = seqno;
|
|
gst_byte_reader_skip_unchecked (reader, length - 6);
|
|
}
|
|
}
|
|
|
|
if (!p->data) {
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length;
|
|
p->sop = FALSE;
|
|
p->eph = eph;
|
|
gst_byte_reader_skip_unchecked (reader, length);
|
|
}
|
|
|
|
tile->packets = g_list_prepend (tile->packets, p);
|
|
} else if (sop) {
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (marker != MARKER_SOP) {
|
|
GST_ERROR_OBJECT (self, "No SOP marker");
|
|
ret = GST_FLOW_EOS;
|
|
goto done;
|
|
}
|
|
|
|
gst_byte_reader_skip_unchecked (reader, 2);
|
|
|
|
if (!gst_byte_reader_get_uint16_be (reader, &length)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_byte_reader_get_uint16_be (reader, &seqno)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
packet_start_data = reader->data + reader->byte;
|
|
packet_start_pos = gst_byte_reader_get_pos (reader);
|
|
|
|
/* Find end of packet */
|
|
while (TRUE) {
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Truncated file");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (marker == MARKER_SOP || marker == MARKER_EOC || marker == MARKER_SOT) {
|
|
Packet *p = g_slice_new (Packet);
|
|
|
|
p->sop = TRUE;
|
|
p->eph = eph;
|
|
p->seqno = seqno;
|
|
p->data = packet_start_data;
|
|
p->length = reader->byte - packet_start_pos;
|
|
tile->packets = g_list_prepend (tile->packets, p);
|
|
|
|
if (marker == MARKER_EOC || marker == MARKER_SOT)
|
|
goto done;
|
|
else
|
|
break;
|
|
}
|
|
|
|
gst_byte_reader_skip_unchecked (reader, 1);
|
|
}
|
|
} else {
|
|
GST_ERROR_OBJECT (self, "Either PLT or SOP are required");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
static guint
|
|
sizeof_packet (GstJP2kDecimator * self, const Packet * packet)
|
|
{
|
|
return packet->length + (packet->sop ? 6 : 0) + ((packet->eph
|
|
&& !packet->data) ? 2 : 0);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
parse_packets (GstJP2kDecimator * self, GstByteReader * reader,
|
|
const MainHeader * header, Tile * tile)
|
|
{
|
|
guint16 marker = 0;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
PacketIterator it;
|
|
|
|
/* Start of data here */
|
|
if (!gst_byte_reader_get_uint16_be (reader, &marker)
|
|
&& marker != MARKER_SOD) {
|
|
GST_ERROR_OBJECT (self, "No SOD in tile");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
ret = init_packet_iterator (self, &it, header, tile);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
while ((it.next (&it))) {
|
|
ret = parse_packet (self, reader, header, tile, &it);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
tile->packets = g_list_reverse (tile->packets);
|
|
|
|
done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
parse_tile (GstJP2kDecimator * self, GstByteReader * reader,
|
|
const MainHeader * header, Tile * tile)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint16 marker = 0, length;
|
|
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Could not read marker");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (marker != MARKER_SOT) {
|
|
GST_ERROR_OBJECT (self, "Unexpected marker 0x%04x", marker);
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* Skip marker */
|
|
gst_byte_reader_skip_unchecked (reader, 2);
|
|
|
|
if (gst_byte_reader_get_remaining (reader) < 10) {
|
|
GST_ERROR_OBJECT (self, "Invalid SOT marker");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
length = gst_byte_reader_get_uint16_be_unchecked (reader);
|
|
if (length != 10) {
|
|
GST_ERROR_OBJECT (self, "Invalid SOT length");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* FIXME: handle multiple tile parts per tile */
|
|
tile->sot.tile_index = gst_byte_reader_get_uint16_be_unchecked (reader);
|
|
tile->sot.tile_part_size = gst_byte_reader_get_uint32_be_unchecked (reader);
|
|
tile->sot.tile_part_index = gst_byte_reader_get_uint8_unchecked (reader);
|
|
tile->sot.n_tile_parts = gst_byte_reader_get_uint8_unchecked (reader);
|
|
|
|
if (tile->sot.tile_part_size >
|
|
2 + 10 + gst_byte_reader_get_remaining (reader)) {
|
|
GST_ERROR_OBJECT (self, "Truncated tile part");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
tile->tile_x = tile->sot.tile_index % header->n_tiles_x;
|
|
tile->tile_y = tile->sot.tile_index / header->n_tiles_x;
|
|
|
|
tile->tx0 =
|
|
MAX (header->siz.xto + tile->tile_x * header->siz.xt, header->siz.xo);
|
|
tile->ty0 =
|
|
MAX (header->siz.yto + tile->tile_y * header->siz.yt, header->siz.yo);
|
|
tile->tx1 =
|
|
MIN (header->siz.xto + (tile->tile_x + 1) * header->siz.xt,
|
|
header->siz.x);
|
|
tile->ty1 =
|
|
MIN (header->siz.yto + (tile->tile_y + 1) * header->siz.yt,
|
|
header->siz.y);
|
|
|
|
/* tile part header */
|
|
while (TRUE) {
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Could not read marker");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* SOD starts the data */
|
|
if (marker == MARKER_SOD) {
|
|
break;
|
|
}
|
|
|
|
if ((marker >> 8) != 0xff) {
|
|
GST_ERROR_OBJECT (self, "Lost synchronization (0x%04x)", marker);
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* Skip the marker */
|
|
gst_byte_reader_skip_unchecked (reader, 2);
|
|
|
|
/* All markers here have a length */
|
|
if (!gst_byte_reader_get_uint16_be (reader, &length)) {
|
|
GST_ERROR_OBJECT (self, "Could not read marker length");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (length < 2 || gst_byte_reader_get_remaining (reader) < length - 2) {
|
|
GST_ERROR_OBJECT (self, "Invalid marker length %u (available %u)",
|
|
length, gst_byte_reader_get_remaining (reader));
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
GST_LOG_OBJECT (self,
|
|
"Tile header Marker 0x%04x at offset %u with length %u", marker,
|
|
gst_byte_reader_get_pos (reader), length);
|
|
|
|
switch (marker) {
|
|
case MARKER_COD:
|
|
if (tile->cod) {
|
|
GST_ERROR_OBJECT (self, "Only one COD allowed");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
tile->cod = g_slice_new0 (CodingStyleDefault);
|
|
ret = parse_cod (self, reader, tile->cod, length);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
break;
|
|
case MARKER_COC:
|
|
GST_ERROR_OBJECT (self, "COC marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_POC:
|
|
GST_ERROR_OBJECT (self, "POC marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_RGN:
|
|
GST_ERROR_OBJECT (self, "RGN marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_PPT:
|
|
GST_ERROR_OBJECT (self, "PPT marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_PLT:{
|
|
PacketLengthTilePart *plt = g_slice_new (PacketLengthTilePart);
|
|
|
|
ret = parse_plt (self, reader, plt, length);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
tile->plt = g_list_append (tile->plt, plt);
|
|
break;
|
|
}
|
|
case MARKER_QCD:
|
|
if (tile->qcd != NULL) {
|
|
GST_ERROR_OBJECT (self, "Multiple QCD markers");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
tile->qcd = g_slice_new (Buffer);
|
|
tile->qcd->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
tile->qcd->length = length - 2;
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
case MARKER_QCC:{
|
|
Buffer *p = g_slice_new (Buffer);
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 2;
|
|
tile->qcc = g_list_append (tile->qcc, p);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
case MARKER_COM:{
|
|
Buffer *p = g_slice_new (Buffer);
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 2;
|
|
tile->com = g_list_append (tile->com, p);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
default:
|
|
GST_DEBUG_OBJECT (self, "Skipping unknown marker 0x%04x", marker);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
ret = parse_packets (self, reader, header, tile);
|
|
|
|
done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
static guint
|
|
sizeof_tile (GstJP2kDecimator * self, const Tile * tile)
|
|
{
|
|
guint size = 0;
|
|
GList *l;
|
|
|
|
/* SOT */
|
|
size += 2 + 2 + 2 + 4 + 1 + 1;
|
|
|
|
if (tile->cod)
|
|
size += sizeof_cod (self, tile->cod);
|
|
|
|
if (tile->qcd)
|
|
size += 2 + 2 + tile->qcd->length;
|
|
|
|
for (l = tile->qcc; l; l = l->next) {
|
|
Buffer *b = l->data;
|
|
size += 2 + 2 + b->length;
|
|
}
|
|
|
|
for (l = tile->plt; l; l = l->next) {
|
|
PacketLengthTilePart *plt = l->data;
|
|
size += sizeof_plt (self, plt);
|
|
}
|
|
|
|
for (l = tile->com; l; l = l->next) {
|
|
Buffer *b = l->data;
|
|
size += 2 + 2 + b->length;
|
|
}
|
|
|
|
/* SOD */
|
|
size += 2;
|
|
|
|
for (l = tile->packets; l; l = l->next) {
|
|
Packet *p = l->data;
|
|
size += sizeof_packet (self, p);
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
static void
|
|
reset_tile (GstJP2kDecimator * self, const MainHeader * header, Tile * tile)
|
|
{
|
|
GList *l;
|
|
|
|
if (tile->cod) {
|
|
reset_cod (self, tile->cod);
|
|
g_slice_free (CodingStyleDefault, tile->cod);
|
|
}
|
|
|
|
for (l = tile->plt; l; l = l->next) {
|
|
PacketLengthTilePart *plt = l->data;
|
|
|
|
reset_plt (self, plt);
|
|
|
|
g_slice_free (PacketLengthTilePart, plt);
|
|
}
|
|
g_list_free (tile->plt);
|
|
|
|
if (tile->qcd)
|
|
g_slice_free (Buffer, tile->qcd);
|
|
|
|
for (l = tile->qcc; l; l = l->next) {
|
|
g_slice_free (Buffer, l->data);
|
|
}
|
|
g_list_free (tile->qcc);
|
|
|
|
for (l = tile->com; l; l = l->next) {
|
|
g_slice_free (Buffer, l->data);
|
|
}
|
|
g_list_free (tile->com);
|
|
|
|
for (l = tile->packets; l; l = l->next) {
|
|
Packet *p = l->data;
|
|
|
|
g_slice_free (Packet, p);
|
|
}
|
|
g_list_free (tile->packets);
|
|
|
|
memset (tile, 0, sizeof (Tile));
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_marker_buffer (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
guint16 marker, const Buffer * buffer)
|
|
{
|
|
if (!gst_byte_writer_ensure_free_space (writer, 2 + 2 + buffer->length)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, marker);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, buffer->length + 2);
|
|
gst_byte_writer_put_data_unchecked (writer, buffer->data, buffer->length);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_packet (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const Packet * packet)
|
|
{
|
|
guint size = packet->length;
|
|
|
|
if (packet->sop)
|
|
size += 6;
|
|
if (packet->eph && !packet->data)
|
|
size += 2;
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer, size)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
if (packet->sop) {
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_SOP);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, 4);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, packet->seqno);
|
|
}
|
|
|
|
if (packet->data) {
|
|
gst_byte_writer_put_data_unchecked (writer, packet->data, packet->length);
|
|
} else {
|
|
gst_byte_writer_put_uint8_unchecked (writer, 0);
|
|
if (packet->eph) {
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_EPH);
|
|
}
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
write_tile (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const MainHeader * header, Tile * tile)
|
|
{
|
|
GList *l;
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer, 12)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_SOT);
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, 10);
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, tile->sot.tile_index);
|
|
gst_byte_writer_put_uint32_be_unchecked (writer, tile->sot.tile_part_size);
|
|
gst_byte_writer_put_uint8_unchecked (writer, tile->sot.tile_part_index);
|
|
gst_byte_writer_put_uint8_unchecked (writer, tile->sot.n_tile_parts);
|
|
|
|
if (tile->cod) {
|
|
ret = write_cod (self, writer, tile->cod);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
if (tile->qcd) {
|
|
ret = write_marker_buffer (self, writer, MARKER_QCD, tile->qcd);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (l = tile->qcc; l; l = l->next) {
|
|
Buffer *p = l->data;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_QCC, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (l = tile->plt; l; l = l->next) {
|
|
PacketLengthTilePart *plt = l->data;
|
|
|
|
ret = write_plt (self, writer, plt);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (l = tile->com; l; l = l->next) {
|
|
Buffer *p = l->data;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_COM, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_byte_writer_put_uint16_be (writer, MARKER_SOD)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
for (l = tile->packets; l; l = l->next) {
|
|
Packet *p = l->data;
|
|
|
|
ret = write_packet (self, writer, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
GstFlowReturn
|
|
parse_main_header (GstJP2kDecimator * self, GstByteReader * reader,
|
|
MainHeader * header)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
guint16 marker = 0, length = 0;
|
|
|
|
/* First SOC */
|
|
if (!gst_byte_reader_get_uint16_be (reader, &marker)
|
|
|| marker != MARKER_SOC) {
|
|
GST_ERROR_OBJECT (self, "Frame does not start with SOC");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
while (TRUE) {
|
|
if (!gst_byte_reader_peek_uint16_be (reader, &marker)) {
|
|
GST_ERROR_OBJECT (self, "Could not read marker");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* SOT starts the tiles */
|
|
if (marker == MARKER_SOT) {
|
|
ret = GST_FLOW_OK;
|
|
break;
|
|
} else if (marker == MARKER_EOC) {
|
|
GST_WARNING_OBJECT (self, "EOC marker before SOT");
|
|
ret = GST_FLOW_EOS;
|
|
goto done;
|
|
}
|
|
|
|
if ((marker >> 8) != 0xff) {
|
|
GST_ERROR_OBJECT (self, "Lost synchronization (0x%04x)", marker);
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
/* Now skip the marker */
|
|
gst_byte_reader_skip_unchecked (reader, 2);
|
|
|
|
/* All markers here have a length */
|
|
if (!gst_byte_reader_get_uint16_be (reader, &length)) {
|
|
GST_ERROR_OBJECT (self, "Could not read marker length");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (length < 2 || gst_byte_reader_get_remaining (reader) < length - 2) {
|
|
GST_ERROR_OBJECT (self, "Invalid marker length %u (available %u)",
|
|
length, gst_byte_reader_get_remaining (reader));
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
GST_LOG_OBJECT (self, "Marker 0x%04x at offset %u with length %u", marker,
|
|
gst_byte_reader_get_pos (reader), length);
|
|
|
|
switch (marker) {
|
|
case MARKER_SIZ:
|
|
|
|
if (header->siz.n_components != 0) {
|
|
GST_ERROR_OBJECT (self, "Multiple SIZ marker");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
ret = parse_siz (self, reader, &header->siz, length);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
break;
|
|
case MARKER_COD:
|
|
if (header->siz.n_components == 0) {
|
|
GST_ERROR_OBJECT (self, "Require SIZ before COD");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
if (header->cod.n_layers != 0) {
|
|
GST_ERROR_OBJECT (self, "Multiple COD");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
ret = parse_cod (self, reader, &header->cod, length);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
break;
|
|
case MARKER_POC:
|
|
GST_ERROR_OBJECT (self, "POC marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_COC:
|
|
GST_ERROR_OBJECT (self, "COC marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_RGN:
|
|
GST_ERROR_OBJECT (self, "RGN marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_TLM:
|
|
GST_ERROR_OBJECT (self, "TLM marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_PLM:
|
|
GST_ERROR_OBJECT (self, "PLM marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_PPM:
|
|
GST_ERROR_OBJECT (self, "PPM marker not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
break;
|
|
case MARKER_QCD:
|
|
if (header->qcd.data != NULL) {
|
|
GST_ERROR_OBJECT (self, "Multiple QCD markers");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
header->qcd.data = gst_byte_reader_peek_data_unchecked (reader);
|
|
header->qcd.length = length - 2;
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
case MARKER_QCC:{
|
|
Buffer *p = g_slice_new (Buffer);
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 2;
|
|
header->qcc = g_list_append (header->qcc, p);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
case MARKER_COM:{
|
|
Buffer *p = g_slice_new (Buffer);
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 2;
|
|
header->com = g_list_append (header->com, p);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
case MARKER_CRG:{
|
|
Buffer *p = g_slice_new (Buffer);
|
|
p->data = gst_byte_reader_peek_data_unchecked (reader);
|
|
p->length = length - 2;
|
|
header->crg = g_list_append (header->crg, p);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
default:
|
|
GST_DEBUG_OBJECT (self, "Skipping unknown marker 0x%04x", marker);
|
|
gst_byte_reader_skip_unchecked (reader, length - 2);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (header->siz.n_components == 0 || header->cod.n_layers == 0) {
|
|
GST_ERROR_OBJECT (self, "No SIZ or COD before SOT");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
header->n_tiles_x =
|
|
(header->siz.x - header->siz.xto + header->siz.xt - 1) / header->siz.xt;
|
|
header->n_tiles_y =
|
|
(header->siz.y - header->siz.yto + header->siz.yt - 1) / header->siz.yt;
|
|
header->n_tiles = header->n_tiles_x * header->n_tiles_y;
|
|
|
|
header->tiles = g_slice_alloc0 (sizeof (Tile) * header->n_tiles);
|
|
|
|
/* now at SOT marker, read the tiles */
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0; i < header->n_tiles; i++) {
|
|
ret = parse_tile (self, reader, header, &header->tiles[i]);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
/* now there must be the EOC marker */
|
|
if (!gst_byte_reader_get_uint16_be (reader, &marker)
|
|
|| marker != MARKER_EOC) {
|
|
GST_ERROR_OBJECT (self, "Frame does not end with EOC");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
done:
|
|
|
|
return ret;
|
|
}
|
|
|
|
guint
|
|
sizeof_main_header (GstJP2kDecimator * self, const MainHeader * header)
|
|
{
|
|
guint size = 2;
|
|
GList *l;
|
|
gint i;
|
|
|
|
size += sizeof_siz (self, &header->siz);
|
|
size += sizeof_cod (self, &header->cod);
|
|
size += 2 + 2 + header->qcd.length;
|
|
|
|
for (l = header->qcc; l; l = l->next) {
|
|
Buffer *b = l->data;
|
|
size += 2 + 2 + b->length;
|
|
}
|
|
|
|
for (l = header->crg; l; l = l->next) {
|
|
Buffer *b = l->data;
|
|
size += 2 + 2 + b->length;
|
|
}
|
|
|
|
for (l = header->com; l; l = l->next) {
|
|
Buffer *b = l->data;
|
|
size += 2 + 2 + b->length;
|
|
}
|
|
|
|
for (i = 0; i < header->n_tiles; i++) {
|
|
size += sizeof_tile (self, &header->tiles[i]);
|
|
}
|
|
|
|
/* EOC */
|
|
size += 2;
|
|
|
|
return size;
|
|
}
|
|
|
|
void
|
|
reset_main_header (GstJP2kDecimator * self, MainHeader * header)
|
|
{
|
|
gint i;
|
|
GList *l;
|
|
|
|
if (header->tiles) {
|
|
for (i = 0; i < header->n_tiles; i++) {
|
|
reset_tile (self, header, &header->tiles[i]);
|
|
}
|
|
g_slice_free1 (sizeof (Tile) * header->n_tiles, header->tiles);
|
|
}
|
|
|
|
for (l = header->qcc; l; l = l->next)
|
|
g_slice_free (Buffer, l->data);
|
|
g_list_free (header->qcc);
|
|
|
|
for (l = header->com; l; l = l->next)
|
|
g_slice_free (Buffer, l->data);
|
|
g_list_free (header->com);
|
|
|
|
for (l = header->crg; l; l = l->next)
|
|
g_slice_free (Buffer, l->data);
|
|
g_list_free (header->crg);
|
|
|
|
reset_cod (self, &header->cod);
|
|
reset_siz (self, &header->siz);
|
|
|
|
memset (header, 0, sizeof (MainHeader));
|
|
}
|
|
|
|
GstFlowReturn
|
|
write_main_header (GstJP2kDecimator * self, GstByteWriter * writer,
|
|
const MainHeader * header)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GList *l;
|
|
gint i;
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer, 2)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_SOC);
|
|
|
|
ret = write_siz (self, writer, &header->siz);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
ret = write_cod (self, writer, &header->cod);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_QCD, &header->qcd);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
|
|
for (l = header->qcc; l; l = l->next) {
|
|
Buffer *p = l->data;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_QCC, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (l = header->crg; l; l = l->next) {
|
|
Buffer *p = l->data;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_CRG, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (l = header->com; l; l = l->next) {
|
|
Buffer *p = l->data;
|
|
|
|
ret = write_marker_buffer (self, writer, MARKER_COM, p);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
for (i = 0; i < header->n_tiles; i++) {
|
|
ret = write_tile (self, writer, header, &header->tiles[i]);
|
|
if (ret != GST_FLOW_OK)
|
|
goto done;
|
|
}
|
|
|
|
if (!gst_byte_writer_ensure_free_space (writer, 2)) {
|
|
GST_ERROR_OBJECT (self, "Could not ensure free space");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
gst_byte_writer_put_uint16_be_unchecked (writer, MARKER_EOC);
|
|
|
|
done:
|
|
return ret;
|
|
}
|
|
|
|
GstFlowReturn
|
|
decimate_main_header (GstJP2kDecimator * self, MainHeader * header)
|
|
{
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
gint i;
|
|
|
|
for (i = 0; i < header->n_tiles; i++) {
|
|
Tile *tile = &header->tiles[i];
|
|
GList *l;
|
|
PacketIterator it;
|
|
PacketLengthTilePart *plt = NULL;
|
|
|
|
if (tile->plt) {
|
|
if (g_list_length (tile->plt) > 1) {
|
|
GST_ERROR_OBJECT (self, "Multiple PLT per tile not supported yet");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
plt = g_slice_new (PacketLengthTilePart);
|
|
plt->index = 0;
|
|
plt->packet_lengths = g_array_new (FALSE, FALSE, sizeof (guint32));
|
|
}
|
|
|
|
init_packet_iterator (self, &it, header, tile);
|
|
|
|
l = tile->packets;
|
|
while ((it.next (&it))) {
|
|
Packet *p;
|
|
|
|
if (l == NULL) {
|
|
GST_ERROR_OBJECT (self, "Not enough packets");
|
|
ret = GST_FLOW_ERROR;
|
|
goto done;
|
|
}
|
|
|
|
p = l->data;
|
|
|
|
if ((self->max_layers != 0 && it.cur_layer >= self->max_layers) ||
|
|
(self->max_decomposition_levels != -1
|
|
&& it.cur_resolution > self->max_decomposition_levels)) {
|
|
p->data = NULL;
|
|
p->length = 1;
|
|
}
|
|
|
|
if (plt) {
|
|
guint32 len = sizeof_packet (self, p);
|
|
g_array_append_val (plt->packet_lengths, len);
|
|
}
|
|
|
|
l = l->next;
|
|
}
|
|
|
|
if (plt) {
|
|
reset_plt (self, tile->plt->data);
|
|
g_slice_free (PacketLengthTilePart, tile->plt->data);
|
|
tile->plt->data = plt;
|
|
}
|
|
|
|
tile->sot.tile_part_size = sizeof_tile (self, tile);
|
|
}
|
|
|
|
done:
|
|
return ret;
|
|
}
|