mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 02:01:12 +00:00
106 lines
3.4 KiB
C
106 lines
3.4 KiB
C
/* JPEG-XS support for MPEG-TS
|
|
*
|
|
* Copyright (C) <2024> Centricular ltd
|
|
* @author Edward Hervey <edward@centricular.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 "gstbasetsmuxjpegxs.h"
|
|
#include <string.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_jpegxs (GstBuffer * buf, GstBaseTsMuxPad * pad,
|
|
GstBaseTsMux * mux)
|
|
{
|
|
GstMpegtsJpegXsDescriptor *private_data = pad->prepare_data;
|
|
GstByteWriter wr;
|
|
GstBuffer *out_buf = NULL;
|
|
gsize header_size = 30;
|
|
guint8 *jxes_header = NULL;
|
|
GstClockTime seconds = buf->pts / GST_SECOND;
|
|
GstClockTime minutes = seconds / 60;
|
|
GstClockTime hours = minutes / 60;
|
|
|
|
/* FIXME : Instead of constantly allocating/freeing a new header, we should:
|
|
* * Generate this header once
|
|
* * Update it only for the new tcod
|
|
*/
|
|
|
|
seconds = seconds % 60;
|
|
minutes = minutes % 60;
|
|
hours = hours % 24;
|
|
|
|
/* Box is fixed size */
|
|
gst_byte_writer_init_with_size (&wr, header_size, FALSE);
|
|
|
|
gst_byte_writer_put_uint32_be (&wr, header_size);
|
|
/* Elementary stream header box 'jxes' == 0x6a786573 */
|
|
gst_byte_writer_put_uint32_be (&wr, 0x6a786573);
|
|
|
|
/* brat, frat are 32 bytes */
|
|
gst_byte_writer_put_uint32_be (&wr, private_data->brat);
|
|
gst_byte_writer_put_uint32_be (&wr, private_data->frat);
|
|
|
|
/* schar, Ppih, Plev */
|
|
gst_byte_writer_put_uint16_be (&wr, private_data->schar);
|
|
gst_byte_writer_put_uint16_be (&wr, private_data->Ppih);
|
|
gst_byte_writer_put_uint16_be (&wr, private_data->Plev);
|
|
|
|
gst_byte_writer_put_uint8 (&wr, private_data->colour_primaries);
|
|
gst_byte_writer_put_uint8 (&wr, private_data->transfer_characteristics);
|
|
gst_byte_writer_put_uint8 (&wr, private_data->matrix_coefficients);
|
|
|
|
gst_byte_writer_put_uint8 (&wr, private_data->video_full_range_flag << 7);
|
|
|
|
/* 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);
|
|
|
|
/* Put jxes header in buffer */
|
|
header_size = gst_byte_writer_get_size (&wr);
|
|
jxes_header = gst_byte_writer_reset_and_get_data (&wr);
|
|
out_buf = gst_buffer_new_wrapped (jxes_header, header_size);
|
|
|
|
/* 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 JPEGXS PES of size %d",
|
|
(int) gst_buffer_get_size (out_buf));
|
|
|
|
return out_buf;
|
|
}
|
|
|
|
void
|
|
gst_base_ts_mux_free_jpegxs (gpointer prepare_data)
|
|
{
|
|
/* Free prepare data memory object */
|
|
g_free (prepare_data);
|
|
}
|