mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
254 lines
7.2 KiB
C
254 lines
7.2 KiB
C
/* GStreamer
|
|
* Copyright (C) 2008-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/* Implementation of SMPTE 386M - Mapping Type-D10 essence data into the MXF
|
|
* Generic Container
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <gst/gst.h>
|
|
#include <string.h>
|
|
|
|
#include "mxfd10.h"
|
|
|
|
GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
|
|
#define GST_CAT_DEFAULT mxf_debug
|
|
|
|
typedef struct
|
|
{
|
|
guint width, channels;
|
|
} MXFD10AudioMappingData;
|
|
|
|
static gboolean
|
|
mxf_is_d10_essence_track (const MXFMetadataTimelineTrack * track)
|
|
{
|
|
guint i;
|
|
|
|
g_return_val_if_fail (track != NULL, FALSE);
|
|
|
|
if (track->parent.descriptor == NULL)
|
|
return FALSE;
|
|
|
|
for (i = 0; i < track->parent.n_descriptor; i++) {
|
|
MXFMetadataFileDescriptor *d = track->parent.descriptor[i];
|
|
MXFUL *key;
|
|
|
|
if (!d)
|
|
continue;
|
|
|
|
key = &d->essence_container;
|
|
/* SMPTE 386M 5.1 */
|
|
if (mxf_is_generic_container_essence_container_label (key) &&
|
|
key->u[12] == 0x02 && key->u[13] == 0x01 &&
|
|
(key->u[14] >= 0x01 && key->u[14] <= 0x06) &&
|
|
(key->u[15] == 0x01 || key->u[15] == 0x02))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mxf_d10_picture_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
|
|
GstCaps * caps,
|
|
MXFMetadataTimelineTrack * track,
|
|
MXFMetadataSourceClip * component, gpointer mapping_data,
|
|
GstBuffer ** outbuf)
|
|
{
|
|
*outbuf = buffer;
|
|
|
|
/* SMPTE 386M 5.2.1 */
|
|
if (key->u[12] != 0x05 || key->u[13] != 0x01 || key->u[14] != 0x01) {
|
|
GST_ERROR ("Invalid D10 picture essence element");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
mxf_d10_sound_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
|
|
GstCaps * caps,
|
|
MXFMetadataTimelineTrack * track,
|
|
MXFMetadataSourceClip * component, gpointer mapping_data,
|
|
GstBuffer ** outbuf)
|
|
{
|
|
guint i, j, nsamples;
|
|
const guint8 *indata;
|
|
guint8 *outdata;
|
|
MXFD10AudioMappingData *data = mapping_data;
|
|
|
|
g_return_val_if_fail (data != NULL, GST_FLOW_ERROR);
|
|
g_return_val_if_fail (data->channels != 0
|
|
&& data->width != 0, GST_FLOW_ERROR);
|
|
|
|
/* SMPTE 386M 5.3.1 */
|
|
if (key->u[12] != 0x06 || key->u[13] != 0x01 || key->u[14] != 0x10) {
|
|
GST_ERROR ("Invalid D10 sound essence element");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
/* Now transform raw AES3 into raw audio, see SMPTE 331M */
|
|
if ((GST_BUFFER_SIZE (buffer) - 4) % 32 != 0) {
|
|
GST_ERROR ("Invalid D10 sound essence buffer size");
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
nsamples = ((GST_BUFFER_SIZE (buffer) - 4) / 4) / 8;
|
|
|
|
*outbuf = gst_buffer_new_and_alloc (nsamples * data->width * data->channels);
|
|
gst_buffer_copy_metadata (*outbuf, buffer,
|
|
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
|
|
GST_BUFFER_COPY_CAPS);
|
|
|
|
indata = GST_BUFFER_DATA (buffer);
|
|
outdata = GST_BUFFER_DATA (*outbuf);
|
|
|
|
/* Skip 32 bit header */
|
|
indata += 4;
|
|
|
|
for (i = 0; i < nsamples; i++) {
|
|
for (j = 0; j < data->channels; j++) {
|
|
guint32 in = GST_READ_UINT32_LE (indata);
|
|
|
|
/* Remove first 4 and last 4 bits as they only
|
|
* contain status data. Shift the 24 bit samples
|
|
* to the correct width afterwards. */
|
|
if (data->width == 2) {
|
|
in = (in >> 12) & 0xffff;
|
|
GST_WRITE_UINT16_LE (outdata, in);
|
|
} else if (data->width == 3) {
|
|
in = (in >> 4) & 0xffffff;
|
|
GST_WRITE_UINT24_LE (outdata, in);
|
|
}
|
|
indata += 4;
|
|
outdata += data->width;
|
|
}
|
|
/* There are always 8 channels but only the first
|
|
* ones contain valid data, skip the others */
|
|
indata += 4 * (8 - data->channels);
|
|
}
|
|
|
|
gst_buffer_unref (buffer);
|
|
|
|
return GST_FLOW_OK;
|
|
}
|
|
|
|
static GstCaps *
|
|
mxf_d10_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
|
|
MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
|
|
{
|
|
MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
|
|
MXFMetadataGenericSoundEssenceDescriptor *s = NULL;
|
|
guint i;
|
|
GstCaps *caps = NULL;
|
|
|
|
g_return_val_if_fail (track != NULL, NULL);
|
|
|
|
if (track->parent.descriptor == NULL) {
|
|
GST_ERROR ("No descriptor found for this track");
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < track->parent.n_descriptor; i++) {
|
|
if (!track->parent.descriptor[i])
|
|
continue;
|
|
|
|
if (MXF_IS_METADATA_GENERIC_PICTURE_ESSENCE_DESCRIPTOR (track->
|
|
parent.descriptor[i])) {
|
|
p = (MXFMetadataGenericPictureEssenceDescriptor *) track->parent.
|
|
descriptor[i];
|
|
break;
|
|
} else if (MXF_IS_METADATA_GENERIC_SOUND_ESSENCE_DESCRIPTOR (track->
|
|
parent.descriptor[i])) {
|
|
s = (MXFMetadataGenericSoundEssenceDescriptor *) track->parent.
|
|
descriptor[i];
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!s && !p) {
|
|
GST_ERROR ("No descriptor found for this track");
|
|
return NULL;
|
|
}
|
|
|
|
if (!*tags)
|
|
*tags = gst_tag_list_new ();
|
|
|
|
if (s) {
|
|
MXFD10AudioMappingData *data;
|
|
|
|
if (s->channel_count == 0 ||
|
|
s->quantization_bits == 0 ||
|
|
s->audio_sampling_rate.n == 0 || s->audio_sampling_rate.d == 0) {
|
|
GST_ERROR ("Invalid descriptor");
|
|
return NULL;
|
|
}
|
|
|
|
if (s->quantization_bits != 16 && s->quantization_bits != 24) {
|
|
GST_ERROR ("Invalid width %u", s->quantization_bits);
|
|
return NULL;
|
|
}
|
|
|
|
/* FIXME: set channel layout */
|
|
|
|
caps = gst_caps_new_simple ("audio/x-raw-int",
|
|
"signed", G_TYPE_BOOLEAN,
|
|
(s->quantization_bits != 8), "endianness", G_TYPE_INT, G_LITTLE_ENDIAN,
|
|
"depth", G_TYPE_INT, s->quantization_bits, "width", G_TYPE_INT,
|
|
s->quantization_bits, NULL);
|
|
|
|
mxf_metadata_generic_sound_essence_descriptor_set_caps (s, caps);
|
|
|
|
*handler = mxf_d10_sound_handle_essence_element;
|
|
|
|
data = g_new0 (MXFD10AudioMappingData, 1);
|
|
data->width = s->quantization_bits / 8;
|
|
data->channels = s->channel_count;
|
|
*mapping_data = data;
|
|
|
|
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
|
|
"SMPTE D-10 Audio", NULL);
|
|
} else if (p) {
|
|
caps =
|
|
gst_caps_new_simple ("video/mpeg", "systemstream", G_TYPE_BOOLEAN,
|
|
FALSE, "mpegversion", G_TYPE_INT, 2, NULL);
|
|
mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
|
|
|
|
*handler = mxf_d10_picture_handle_essence_element;
|
|
gst_tag_list_add (*tags, GST_TAG_MERGE_APPEND, GST_TAG_VIDEO_CODEC,
|
|
"SMPTE D-10 Video", NULL);
|
|
}
|
|
|
|
return caps;
|
|
}
|
|
|
|
static const MXFEssenceElementHandler mxf_d10_essence_element_handler = {
|
|
mxf_is_d10_essence_track,
|
|
mxf_d10_create_caps
|
|
};
|
|
|
|
void
|
|
mxf_d10_init (void)
|
|
{
|
|
mxf_essence_element_handler_register (&mxf_d10_essence_element_handler);
|
|
}
|