mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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271 lines
9.1 KiB
C
271 lines
9.1 KiB
C
/* GStreamer
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* Copyright (C) 2008-2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/* Implementation of SMPTE 384M - Mapping of Uncompressed Pictures into the MXF
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* Generic Container
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*/
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/* TODO:
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* - Handle CDCI essence
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* - Handle more formats with RGBA descriptor (4:4:4 / 4:4:4:4 YUV, RGB656, ...)
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* - Correctly transform for the GStreamer strides
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* - Handle all the dimensions and other properties in the picture
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* essence descriptors correctly according to S377M Annex E
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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 <gst/gst.h>
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#include <string.h>
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#include <gst/video/video.h>
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#include "mxfup.h"
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GST_DEBUG_CATEGORY_EXTERN (mxf_debug);
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#define GST_CAT_DEFAULT mxf_debug
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typedef struct
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{
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guint32 image_start_offset;
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guint32 image_end_offset;
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} MXFUPMappingData;
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static gboolean
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mxf_is_up_essence_track (const MXFMetadataTimelineTrack * track)
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{
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guint i;
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g_return_val_if_fail (track != NULL, FALSE);
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if (track->parent.descriptor == NULL)
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return FALSE;
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for (i = 0; i < track->parent.n_descriptor; i++) {
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MXFMetadataFileDescriptor *d = track->parent.descriptor[i];
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MXFUL *key;
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if (!d)
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continue;
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key = &d->essence_container;
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/* SMPTE 384M 8 */
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if (mxf_is_generic_container_essence_container_label (key) &&
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key->u[12] == 0x02 && key->u[13] == 0x05 && key->u[15] <= 0x03)
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return TRUE;
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}
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return FALSE;
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}
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static GstFlowReturn
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mxf_up_handle_essence_element (const MXFUL * key, GstBuffer * buffer,
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GstCaps * caps,
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MXFMetadataTimelineTrack * track,
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MXFMetadataSourceClip * component, gpointer mapping_data,
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GstBuffer ** outbuf)
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{
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MXFUPMappingData *data = mapping_data;
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/* SMPTE 384M 7.1 */
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if (key->u[12] != 0x15 || (key->u[14] != 0x01 && key->u[14] != 0x02
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&& key->u[14] != 0x03 && key->u[14] != 0x04)) {
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GST_ERROR ("Invalid uncompressed picture essence element");
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return GST_FLOW_ERROR;
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}
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if (!data || (data->image_start_offset == 0 && data->image_end_offset == 0)) {
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*outbuf = buffer;
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} else {
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if (data->image_start_offset + data->image_end_offset
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> GST_BUFFER_SIZE (buffer)) {
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gst_buffer_unref (buffer);
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GST_ERROR ("Invalid buffer size");
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return GST_FLOW_ERROR;
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} else {
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GST_BUFFER_DATA (buffer) += data->image_start_offset;
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GST_BUFFER_SIZE (buffer) -= data->image_start_offset;
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GST_BUFFER_SIZE (buffer) -= data->image_end_offset;
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*outbuf = buffer;
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}
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}
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return GST_FLOW_OK;
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}
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static GstCaps *
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mxf_up_rgba_create_caps (MXFMetadataTimelineTrack * track,
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MXFMetadataRGBAPictureEssenceDescriptor * d, GstTagList ** tags,
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MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
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{
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GstCaps *caps = NULL;
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if (!d->pixel_layout) {
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GST_ERROR ("No pixel layout");
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return NULL;
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}
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if (d->n_pixel_layout == 3) {
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if (d->pixel_layout[0] == 'R' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'B' && d->pixel_layout[1] == 8
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&& d->pixel_layout[3] == 8 && d->pixel_layout[5] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_RGB);
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} else if (d->pixel_layout[0] == 'B' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'R' && d->pixel_layout[1] == 8
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&& d->pixel_layout[3] == 8 && d->pixel_layout[5] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_BGR);
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} else {
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GST_ERROR ("Unsupport 3 component pixel layout");
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return NULL;
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}
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} else if (d->n_pixel_layout == 4) {
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if (d->pixel_layout[0] == 'R' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'B' && d->pixel_layout[6] == 'F'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_RGBx);
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} else if (d->pixel_layout[0] == 'B' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'R' && d->pixel_layout[6] == 'F'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_BGRx);
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} else if (d->pixel_layout[0] == 'F' && d->pixel_layout[2] == 'R'
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&& d->pixel_layout[4] == 'G' && d->pixel_layout[6] == 'B'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_xRGB);
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} else if (d->pixel_layout[0] == 'F' && d->pixel_layout[2] == 'B'
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&& d->pixel_layout[4] == 'G' && d->pixel_layout[6] == 'R'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_xBGR);
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} else if (d->pixel_layout[0] == 'A' && d->pixel_layout[2] == 'R'
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&& d->pixel_layout[4] == 'G' && d->pixel_layout[6] == 'B'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_ARGB);
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} else if (d->pixel_layout[0] == 'A' && d->pixel_layout[2] == 'B'
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&& d->pixel_layout[4] == 'G' && d->pixel_layout[6] == 'R'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_ABGR);
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} else if (d->pixel_layout[0] == 'R' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'B' && d->pixel_layout[6] == 'A'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_RGBA);
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} else if (d->pixel_layout[0] == 'B' && d->pixel_layout[2] == 'G'
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&& d->pixel_layout[4] == 'R' && d->pixel_layout[6] == 'A'
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&& d->pixel_layout[1] == 8 && d->pixel_layout[3] == 8
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&& d->pixel_layout[5] == 8 && d->pixel_layout[7] == 8) {
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caps = gst_caps_from_string (GST_VIDEO_CAPS_BGRA);
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} else {
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GST_ERROR ("Unsupport 4 component pixel layout");
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return NULL;
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}
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} else {
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GST_ERROR ("Pixel layouts with %u components not supported yet",
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d->n_pixel_layout);
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return NULL;
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}
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if (caps) {
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MXFUPMappingData *data = g_new0 (MXFUPMappingData, 1);
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data->image_start_offset =
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((MXFMetadataGenericPictureEssenceDescriptor *) d)->image_start_offset;
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data->image_end_offset =
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((MXFMetadataGenericPictureEssenceDescriptor *) d)->image_end_offset;
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*mapping_data = data;
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}
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return caps;
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}
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static GstCaps *
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mxf_up_create_caps (MXFMetadataTimelineTrack * track, GstTagList ** tags,
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MXFEssenceElementHandleFunc * handler, gpointer * mapping_data)
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{
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MXFMetadataGenericPictureEssenceDescriptor *p = NULL;
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MXFMetadataCDCIPictureEssenceDescriptor *c = NULL;
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MXFMetadataRGBAPictureEssenceDescriptor *r = NULL;
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guint i;
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GstCaps *caps = NULL;
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g_return_val_if_fail (track != NULL, NULL);
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if (track->parent.descriptor == NULL) {
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GST_ERROR ("No descriptor found for this track");
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return NULL;
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}
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for (i = 0; i < track->parent.n_descriptor; i++) {
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if (!track->parent.descriptor[i])
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continue;
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if (MXF_IS_METADATA_RGBA_PICTURE_ESSENCE_DESCRIPTOR (track->parent.
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descriptor[i])) {
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p = (MXFMetadataGenericPictureEssenceDescriptor *) track->parent.
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descriptor[i];
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r = (MXFMetadataRGBAPictureEssenceDescriptor *) track->parent.
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descriptor[i];
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break;
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} else if (MXF_IS_METADATA_CDCI_PICTURE_ESSENCE_DESCRIPTOR (track->
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parent.descriptor[i])) {
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p = (MXFMetadataGenericPictureEssenceDescriptor *) track->parent.
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descriptor[i];
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c = (MXFMetadataCDCIPictureEssenceDescriptor *) track->parent.
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descriptor[i];
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}
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}
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if (!p) {
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GST_ERROR ("No picture essence descriptor found for this track");
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return NULL;
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}
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*handler = mxf_up_handle_essence_element;
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if (r) {
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caps = mxf_up_rgba_create_caps (track, r, tags, handler, mapping_data);
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} else {
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GST_ERROR ("CDCI uncompressed picture essence not supported yet");
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return NULL;
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}
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if (caps) {
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mxf_metadata_generic_picture_essence_descriptor_set_caps (p, caps);
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}
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return caps;
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}
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static const MXFEssenceElementHandler mxf_up_essence_element_handler = {
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mxf_is_up_essence_track,
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mxf_up_create_caps
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};
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void
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mxf_up_init (void)
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{
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mxf_essence_element_handler_register (&mxf_up_essence_element_handler);
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}
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