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/*
* GStreamer
* Copyright (C) 2012 Edward Hervey <edward@collabora.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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstmpegvideometa.h"
GST_DEBUG_CATEGORY_STATIC (mpegv_meta_debug);
#define GST_CAT_DEFAULT mpegv_meta_debug
static gboolean
gst_mpeg_video_meta_init (GstMpegVideoMeta * mpeg_video_meta,
gpointer params, GstBuffer * buffer)
{
mpeg_video_meta->sequencehdr = NULL;
mpeg_video_meta->sequenceext = NULL;
mpeg_video_meta->sequencedispext = NULL;
mpeg_video_meta->pichdr = NULL;
mpeg_video_meta->picext = NULL;
mpeg_video_meta->quantext = NULL;
mpeg_video_meta->num_slices = mpeg_video_meta->slice_offset = 0;
return TRUE;
}
static void
gst_mpeg_video_meta_free (GstMpegVideoMeta * mpeg_video_meta,
GstBuffer * buffer)
{
if (mpeg_video_meta->sequencehdr)
g_slice_free (GstMpegVideoSequenceHdr, mpeg_video_meta->sequencehdr);
if (mpeg_video_meta->sequenceext)
g_slice_free (GstMpegVideoSequenceExt, mpeg_video_meta->sequenceext);
if (mpeg_video_meta->sequencedispext)
g_slice_free (GstMpegVideoSequenceDisplayExt,
mpeg_video_meta->sequencedispext);
if (mpeg_video_meta->pichdr)
g_slice_free (GstMpegVideoPictureHdr, mpeg_video_meta->pichdr);
if (mpeg_video_meta->picext)
g_slice_free (GstMpegVideoPictureExt, mpeg_video_meta->picext);
if (mpeg_video_meta->quantext)
g_slice_free (GstMpegVideoQuantMatrixExt, mpeg_video_meta->quantext);
}
static gboolean
gst_mpeg_video_meta_transform (GstBuffer * dest, GstMeta * meta,
GstBuffer * buffer, GQuark type, gpointer data)
{
GstMpegVideoMeta *smeta, *dmeta;
smeta = (GstMpegVideoMeta *) meta;
if (GST_META_TRANSFORM_IS_COPY (type)) {
GstMetaTransformCopy *copy = data;
if (!copy->region) {
/* only copy if the complete data is copied as well */
dmeta =
gst_buffer_add_mpeg_video_meta (dest, smeta->sequencehdr,
smeta->sequenceext, smeta->sequencedispext, smeta->pichdr,
smeta->picext, smeta->quantext);
if (!dmeta)
return FALSE;
dmeta->num_slices = smeta->num_slices;
dmeta->slice_offset = smeta->slice_offset;
}
} else {
/* return FALSE, if transform type is not supported */
return FALSE;
}
return TRUE;
}
GType
gst_mpeg_video_meta_api_get_type (void)
{
static volatile GType type;
static const gchar *tags[] = { "memory", NULL }; /* don't know what to set here */
if (g_once_init_enter (&type)) {
GType _type = gst_meta_api_type_register ("GstMpegVideoMetaAPI", tags);
GST_DEBUG_CATEGORY_INIT (mpegv_meta_debug, "mpegvideometa", 0,
"MPEG-1/2 video GstMeta");
g_once_init_leave (&type, _type);
}
return type;
}
const GstMetaInfo *
gst_mpeg_video_meta_get_info (void)
{
static const GstMetaInfo *mpeg_video_meta_info = NULL;
if (g_once_init_enter ((GstMetaInfo **) & mpeg_video_meta_info)) {
const GstMetaInfo *meta = gst_meta_register (GST_MPEG_VIDEO_META_API_TYPE,
"GstMpegVideoMeta", sizeof (GstMpegVideoMeta),
(GstMetaInitFunction) gst_mpeg_video_meta_init,
(GstMetaFreeFunction) gst_mpeg_video_meta_free,
(GstMetaTransformFunction) gst_mpeg_video_meta_transform);
g_once_init_leave ((GstMetaInfo **) & mpeg_video_meta_info,
(GstMetaInfo *) meta);
}
return mpeg_video_meta_info;
}
/**
* gst_buffer_add_mpeg_video_meta:
* @buffer: a #GstBuffer
*
* Creates and adds a #GstMpegVideoMeta to a @buffer.
*
* Provided structures must either be %NULL or GSlice-allocated.
*
* Returns: (transfer full): a newly created #GstMpegVideoMeta
*
* Since: 1.2
*/
GstMpegVideoMeta *
gst_buffer_add_mpeg_video_meta (GstBuffer * buffer,
const GstMpegVideoSequenceHdr * seq_hdr,
const GstMpegVideoSequenceExt * seq_ext,
const GstMpegVideoSequenceDisplayExt * disp_ext,
const GstMpegVideoPictureHdr * pic_hdr,
const GstMpegVideoPictureExt * pic_ext,
const GstMpegVideoQuantMatrixExt * quant_ext)
{
GstMpegVideoMeta *mpeg_video_meta;
mpeg_video_meta =
(GstMpegVideoMeta *) gst_buffer_add_meta (buffer,
GST_MPEG_VIDEO_META_INFO, NULL);
GST_DEBUG
("seq_hdr:%p, seq_ext:%p, disp_ext:%p, pic_hdr:%p, pic_ext:%p, quant_ext:%p",
seq_hdr, seq_ext, disp_ext, pic_hdr, pic_ext, quant_ext);
if (seq_hdr)
mpeg_video_meta->sequencehdr =
g_slice_dup (GstMpegVideoSequenceHdr, seq_hdr);
if (seq_ext)
mpeg_video_meta->sequenceext =
g_slice_dup (GstMpegVideoSequenceExt, seq_ext);
if (disp_ext)
mpeg_video_meta->sequencedispext =
g_slice_dup (GstMpegVideoSequenceDisplayExt, disp_ext);
mpeg_video_meta->pichdr = g_slice_dup (GstMpegVideoPictureHdr, pic_hdr);
if (pic_ext)
mpeg_video_meta->picext = g_slice_dup (GstMpegVideoPictureExt, pic_ext);
if (quant_ext)
mpeg_video_meta->quantext =
g_slice_dup (GstMpegVideoQuantMatrixExt, quant_ext);
return mpeg_video_meta;
}
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