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11a151ef80
Some people need to avoid inclusion of GPL code for their use cases and thus get easily spooked by GPL license headers. This code is actually licensed under different licenses, only one of which is GPL, and it's already possible to just upgrade from LGPL to GPL anyway so having the GPL listed explicitly as one of the choices doesn't really add anything. So remove GPL from the list and also add SPDX license identifiers while we're at it. Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2539>
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/* GStreamer JPEG 2000 Parser
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*
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* Copyright (C) <2016> Milos Seleceni
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* @author Milos Seleceni <milos.seleceni@comprimato.com>
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*
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* Copyright (C) <2016-2017> Grok Image Compression Inc.
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* @author Aaron Boxer <boxerab@gmail.com>
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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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* SPDX-License-Identifier: LGPL-2.0-or-later
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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 <stdio.h>
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#include "gstbasetsmuxjpeg2000.h"
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#include <string.h>
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#include <gst/audio/audio.h>
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#include <gst/base/gstbytewriter.h>
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#include <gst/gst.h>
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#define GST_CAT_DEFAULT gst_base_ts_mux_debug
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GstBuffer *
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gst_base_ts_mux_prepare_jpeg2000 (GstBuffer * buf, GstBaseTsMuxPad * pad,
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GstBaseTsMux * mux)
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{
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j2k_private_data *private_data = pad->prepare_data;
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GstByteWriter wr;
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GstBuffer *out_buf = NULL;
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guint8 *elsm_header = NULL;
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const guint header_size = private_data->interlace ? 48 : 38;
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GstClockTime seconds = buf->pts / GST_SECOND;
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GstClockTime minutes = seconds / 60;
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GstClockTime hours = minutes / 60;
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/* interlaced not supported */
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if (private_data->interlace) {
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GST_ERROR_OBJECT (mux, "Interlaced not supported");
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return NULL;
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}
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seconds = seconds % 60;
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minutes = minutes % 60;
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hours = hours % 24;
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/* ??? Hack for missing frame number index in buffer offset */
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/* guint8 frame_number = private_data->frame_number % 60; */
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gst_byte_writer_init_with_size (&wr, header_size, FALSE);
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/* Elementary stream header box 'elsm' == 0x656c736d */
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gst_byte_writer_put_uint32_be (&wr, 0x656c736d);
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/* Framerate box 'frat' == 0x66726174 */
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gst_byte_writer_put_uint32_be (&wr, 0x66726174);
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/* put framerate denominator */
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gst_byte_writer_put_uint16_be (&wr, private_data->den);
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/* put framerate numerator */
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gst_byte_writer_put_uint16_be (&wr, private_data->num);
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/* Maximum bitrate box 'brat' == 0x62726174 */
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gst_byte_writer_put_uint32_be (&wr, 0x62726174);
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/* put Maximum bitrate */
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gst_byte_writer_put_uint32_be (&wr, private_data->max_bitrate);
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/* put size of first codestream */
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/* private_data->AUF[0] */
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gst_byte_writer_put_uint32_be (&wr, gst_buffer_get_size (buf));
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/* ToDo: the if block below is never called, because we do not support muxing J2K-over-mpeg-TS interlaced data
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* If we ever do, then the code below will need to tested and perhaps modified
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*/
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if (private_data->interlace) {
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/* put size of second codestream */
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gst_byte_writer_put_uint32_be (&wr, gst_buffer_get_size (buf));
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/* Time Code Box 'fiel' == 0x6669656c */
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gst_byte_writer_put_uint32_be (&wr, 0x6669656c);
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/* put Fic */
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gst_byte_writer_put_uint8 (&wr, private_data->Fic);
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/* put Fio */
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gst_byte_writer_put_uint8 (&wr, private_data->Fio);
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}
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/* Time Code Box 'tcod' == 0x74636f64 */
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gst_byte_writer_put_uint32_be (&wr, 0x74636f64);
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/* put HHMMSSFF */
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gst_byte_writer_put_uint8 (&wr, (guint8) hours);
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gst_byte_writer_put_uint8 (&wr, (guint8) minutes);
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gst_byte_writer_put_uint8 (&wr, (guint8) seconds);
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gst_byte_writer_put_uint8 (&wr, 0x0);
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/* ??? Hack for missing frame number index in buffer offset */
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/* private_data->frame_number++; */
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/* Broadcast Color Box 'bcol' == 0x62636f6c */
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gst_byte_writer_put_uint32_be (&wr, 0x62636f6c);
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/* put color spec */
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gst_byte_writer_put_uint8 (&wr, private_data->color_spec);
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/* put reserved 8-bit */
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gst_byte_writer_put_uint8 (&wr, 0xff);
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/* Allocate ELSM header size only; gst_buffer_copy_into will add gst_buffer_get_size (buf) bytes to out_buf */
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out_buf = gst_buffer_new_and_alloc (header_size);
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/* Copy ELSM header */
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elsm_header = gst_byte_writer_reset_and_get_data (&wr);
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gst_buffer_fill (out_buf, 0, elsm_header, header_size);
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g_free (elsm_header);
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/* Copy complete frame */
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gst_buffer_copy_into (out_buf, buf,
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GST_BUFFER_COPY_METADATA | GST_BUFFER_COPY_TIMESTAMPS |
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GST_BUFFER_COPY_MEMORY, 0, -1);
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GST_DEBUG_OBJECT (mux, "Prepared J2K PES of size %d",
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(int) gst_buffer_get_size (out_buf));
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return out_buf;
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}
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void
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gst_base_ts_mux_free_jpeg2000 (gpointer prepare_data)
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{
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/* Free prepare data memory object */
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g_free (prepare_data);
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}
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