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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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025f8b9129
This commit add an helper to convert a frame to frame-layer format and use it to implement these two stream-format conversion: - asf --> sequence-layer-frame-layer - asf --> frame-layer In simple/main profile, we basically have a raw frame, so building a frame layer isn't too complicated. But in advanced profile, the first frame-layer should contain sequence-header, entrypoint, and frame and each keyframe should contain entrypoint, so we have to handle these carefully. https://bugzilla.gnome.org/show_bug.cgi?id=738526
129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/*
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* Copyright (C) 2011, Hewlett-Packard Development Company, L.P.
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* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>, Collabora Ltd.
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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 Lesser General Public
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* License as published by the Free Software Foundation
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* version 2.1 of the License.
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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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef __GST_VC1_PARSE_H__
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#define __GST_VC1_PARSE_H__
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#include <gst/gst.h>
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#include <gst/base/gstbaseparse.h>
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#include <gst/codecparsers/gstvc1parser.h>
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G_BEGIN_DECLS
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#define GST_TYPE_VC1_PARSE \
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(gst_vc1_parse_get_type())
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#define GST_VC1_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VC1_PARSE,GstVC1Parse))
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#define GST_VC1_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VC1_PARSE,GstVC1ParseClass))
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#define GST_IS_VC1_PARSE(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VC1_PARSE))
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#define GST_IS_VC1_PARSE_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VC1_PARSE))
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typedef enum {
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VC1_HEADER_FORMAT_NONE = 0,
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VC1_HEADER_FORMAT_ASF,
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VC1_HEADER_FORMAT_SEQUENCE_LAYER
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} VC1HeaderFormat;
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typedef enum {
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VC1_STREAM_FORMAT_BDU = 0,
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VC1_STREAM_FORMAT_BDU_FRAME,
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VC1_STREAM_FORMAT_SEQUENCE_LAYER_BDU,
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VC1_STREAM_FORMAT_SEQUENCE_LAYER_BDU_FRAME,
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VC1_STREAM_FORMAT_SEQUENCE_LAYER_RAW_FRAME,
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VC1_STREAM_FORMAT_SEQUENCE_LAYER_FRAME_LAYER,
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VC1_STREAM_FORMAT_ASF,
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VC1_STREAM_FORMAT_FRAME_LAYER
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} VC1StreamFormat;
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typedef enum {
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GST_VC1_PARSE_FORMAT_WMV3 = 0,
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GST_VC1_PARSE_FORMAT_WVC1
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} GstVC1ParseFormat;
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/* FIXME move into baseparse, or anything equivalent;
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* see https://bugzilla.gnome.org/show_bug.cgi?id=650093
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* #define GST_BASE_PARSE_FRAME_FLAG_PARSING 0x100000 */
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typedef struct _GstVC1Parse GstVC1Parse;
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typedef struct _GstVC1ParseClass GstVC1ParseClass;
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struct _GstVC1Parse
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{
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GstBaseParse baseparse;
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/* Caps */
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GstVC1Profile profile;
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GstVC1Level level;
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GstVC1ParseFormat format;
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gint width, height;
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gint fps_n, fps_d;
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gboolean fps_from_caps;
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GstClockTime frame_duration;
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gint par_n, par_d;
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gboolean par_from_caps;
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/* TRUE if we should negotiate with downstream */
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gboolean renegotiate;
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/* TRUE if the srcpads should be updated */
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gboolean update_caps;
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gboolean sent_codec_tag;
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VC1HeaderFormat input_header_format;
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VC1HeaderFormat output_header_format;
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VC1StreamFormat input_stream_format;
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VC1StreamFormat output_stream_format;
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gboolean detecting_stream_format;
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GstVC1SeqHdr seq_hdr;
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GstBuffer *seq_hdr_buffer;
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GstBuffer *entrypoint_buffer;
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GstVC1SeqLayer seq_layer;
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GstBuffer *seq_layer_buffer;
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/* Metadata about the currently parsed frame, only
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* valid if the GstBaseParseFrame has the
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* GST_BASE_PARSE_FRAME_FLAG_PARSING flag */
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GstVC1StartCode startcode;
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/* TRUE if we have already sent the sequence-layer,
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* use for stream-format conversion */
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gboolean seq_layer_sent;
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/* TRUE if we have already sent the frame-layer first frame,
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* use for stream-format conversion */
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gboolean frame_layer_first_frame_sent;
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};
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struct _GstVC1ParseClass
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{
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GstBaseParseClass parent_class;
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};
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G_END_DECLS
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GType gst_vc1_parse_get_type (void);
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#endif /* __GST_VC1_PARSE_H__ */
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