mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-08 13:18:52 +00:00
136 lines
4.7 KiB
C
136 lines
4.7 KiB
C
/* GStreamer JPEG 2000 Parser
|
|
*
|
|
* Copyright (C) <2016> Milos Seleceni
|
|
* @author Milos Seleceni <milos.seleceni@comprimato.com>
|
|
*
|
|
* Copyright (C) <2016-2017> Grok Image Compression Inc.
|
|
* @author Aaron Boxer <boxerab@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.0-or-later
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include "gstbasetsmuxjpeg2000.h"
|
|
#include <string.h>
|
|
#include <gst/audio/audio.h>
|
|
#include <gst/base/gstbytewriter.h>
|
|
#include <gst/gst.h>
|
|
|
|
#define GST_CAT_DEFAULT gst_base_ts_mux_debug
|
|
|
|
GstBuffer *
|
|
gst_base_ts_mux_prepare_jpeg2000 (GstBuffer * buf, GstBaseTsMuxPad * pad,
|
|
GstBaseTsMux * mux)
|
|
{
|
|
j2k_private_data *private_data = pad->prepare_data;
|
|
GstByteWriter wr;
|
|
GstBuffer *out_buf = NULL;
|
|
guint8 *elsm_header = NULL;
|
|
const guint header_size = private_data->interlace ? 48 : 38;
|
|
GstClockTime seconds = buf->pts / GST_SECOND;
|
|
GstClockTime minutes = seconds / 60;
|
|
GstClockTime hours = minutes / 60;
|
|
|
|
/* interlaced not supported */
|
|
if (private_data->interlace) {
|
|
GST_ERROR_OBJECT (mux, "Interlaced not supported");
|
|
return NULL;
|
|
}
|
|
|
|
seconds = seconds % 60;
|
|
minutes = minutes % 60;
|
|
hours = hours % 24;
|
|
|
|
/* ??? Hack for missing frame number index in buffer offset */
|
|
/* guint8 frame_number = private_data->frame_number % 60; */
|
|
gst_byte_writer_init_with_size (&wr, header_size, FALSE);
|
|
|
|
/* Elementary stream header box 'elsm' == 0x656c736d */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x656c736d);
|
|
/* Framerate box 'frat' == 0x66726174 */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x66726174);
|
|
/* put framerate denominator */
|
|
gst_byte_writer_put_uint16_be (&wr, private_data->den);
|
|
/* put framerate numerator */
|
|
gst_byte_writer_put_uint16_be (&wr, private_data->num);
|
|
/* Maximum bitrate box 'brat' == 0x62726174 */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x62726174);
|
|
/* put Maximum bitrate */
|
|
gst_byte_writer_put_uint32_be (&wr, private_data->max_bitrate);
|
|
/* put size of first codestream */
|
|
/* private_data->AUF[0] */
|
|
gst_byte_writer_put_uint32_be (&wr, gst_buffer_get_size (buf));
|
|
|
|
/* ToDo: the if block below is never called, because we do not support muxing J2K-over-mpeg-TS interlaced data
|
|
* If we ever do, then the code below will need to tested and perhaps modified
|
|
*/
|
|
if (private_data->interlace) {
|
|
/* put size of second codestream */
|
|
gst_byte_writer_put_uint32_be (&wr, gst_buffer_get_size (buf));
|
|
/* Time Code Box 'fiel' == 0x6669656c */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x6669656c);
|
|
/* put Fic */
|
|
gst_byte_writer_put_uint8 (&wr, private_data->Fic);
|
|
/* put Fio */
|
|
gst_byte_writer_put_uint8 (&wr, private_data->Fio);
|
|
}
|
|
|
|
/* Time Code Box 'tcod' == 0x74636f64 */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x74636f64);
|
|
|
|
/* put HHMMSSFF */
|
|
gst_byte_writer_put_uint8 (&wr, (guint8) hours);
|
|
gst_byte_writer_put_uint8 (&wr, (guint8) minutes);
|
|
gst_byte_writer_put_uint8 (&wr, (guint8) seconds);
|
|
gst_byte_writer_put_uint8 (&wr, 0x0);
|
|
/* ??? Hack for missing frame number index in buffer offset */
|
|
/* private_data->frame_number++; */
|
|
|
|
/* Broadcast Color Box 'bcol' == 0x62636f6c */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x62636f6c);
|
|
/* put color spec */
|
|
gst_byte_writer_put_uint8 (&wr, private_data->color_spec);
|
|
/* put reserved 8-bit */
|
|
gst_byte_writer_put_uint8 (&wr, 0xff);
|
|
/* Allocate ELSM header size only; gst_buffer_copy_into will add gst_buffer_get_size (buf) bytes to out_buf */
|
|
out_buf = gst_buffer_new_and_alloc (header_size);
|
|
|
|
/* Copy ELSM header */
|
|
elsm_header = gst_byte_writer_reset_and_get_data (&wr);
|
|
gst_buffer_fill (out_buf, 0, elsm_header, header_size);
|
|
g_free (elsm_header);
|
|
/* Copy complete frame */
|
|
gst_buffer_copy_into (out_buf, buf,
|
|
GST_BUFFER_COPY_METADATA | GST_BUFFER_COPY_TIMESTAMPS |
|
|
GST_BUFFER_COPY_MEMORY, 0, -1);
|
|
GST_DEBUG_OBJECT (mux, "Prepared J2K PES of size %d",
|
|
(int) gst_buffer_get_size (out_buf));
|
|
|
|
return out_buf;
|
|
}
|
|
|
|
void
|
|
gst_base_ts_mux_free_jpeg2000 (gpointer prepare_data)
|
|
{
|
|
/* Free prepare data memory object */
|
|
g_free (prepare_data);
|
|
}
|