mpegtsmux: spring cleanup, no functional change

1 files changed, 134 insertions, 0 deletions

diff --git a/gst/mpegtsmux/gstbasetsmuxjpeg2000.c b/gst/mpegtsmux/gstbasetsmuxjpeg2000.c
new file mode 100644
index 000000000..fca79368d
--- /dev/null
+++ b/gst/mpegtsmux/gstbasetsmuxjpeg2000.c
@@ -0,0 +1,134 @@
+/* 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.
+ */
+
+#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, GstBaseTsPadData * data,
+    GstBaseTsMux * mux)
+{
+  j2k_private_data *private_data = data->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);
+}