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/* GStreamer
* Copyright (C) 2007 Jan Schmidt <thaytan@mad.scientist.com>
* Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@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.
*/
#ifndef __MPEGUTIL_H__
#define __MPEGUTIL_H__
#include <gst/gst.h>
typedef struct MPEGSeqHdr MPEGSeqHdr;
typedef struct MPEGSeqExtHdr MPEGSeqExtHdr;
typedef struct MPEGPictureHdr MPEGPictureHdr;
typedef struct MPEGPictureExt MPEGPictureExt;
typedef struct MPEGGop MPEGGop;
typedef struct MPEGQuantMatrix MPEGQuantMatrix;
/* Packet ID codes for different packet types we
* care about */
#define MPEG_PACKET_PICTURE 0x00
#define MPEG_PACKET_SLICE_MIN 0x01
#define MPEG_PACKET_SLICE_MAX 0xaf
#define MPEG_PACKET_SEQUENCE 0xb3
#define MPEG_PACKET_EXTENSION 0xb5
#define MPEG_PACKET_SEQUENCE_END 0xb7
#define MPEG_PACKET_GOP 0xb8
#define MPEG_PACKET_NONE 0xff
/* Extension codes we care about */
#define MPEG_PACKET_EXT_SEQUENCE 0x01
#define MPEG_PACKET_EXT_SEQUENCE_DISPLAY 0x02
#define MPEG_PACKET_EXT_QUANT_MATRIX 0x03
#define MPEG_PACKET_EXT_PICTURE_CODING 0x08
/* frame types */
#define I_FRAME 1
#define P_FRAME 2
#define B_FRAME 3
struct MPEGSeqHdr
{
/* Pixel-Aspect Ratio from DAR code via set_par_from_dar */
guint par_w, par_h;
/* Width and Height of the video */
guint16 width, height;
/* Framerate */
guint fps_n, fps_d;
guint32 bitrate;
guint16 vbv_buffer;
guint8 constrained_parameters_flag;
guint8 intra_quantizer_matrix[64];
guint8 non_intra_quantizer_matrix[64];
};
struct MPEGSeqExtHdr
{
/* mpeg2 decoder profile */
guint8 profile;
/* mpeg2 decoder level */
guint8 level;
guint8 progressive;
guint8 chroma_format;
guint8 horiz_size_ext, vert_size_ext;
guint16 bitrate_ext;
guint8 fps_n_ext, fps_d_ext;
};
struct MPEGPictureHdr
{
guint16 tsn;
guint8 pic_type;
guint16 vbv_delay;
guint8 full_pel_forward_vector, full_pel_backward_vector;
guint8 f_code[2][2];
};
struct MPEGPictureExt
{
guint8 f_code[2][2];
guint8 intra_dc_precision;
guint8 picture_structure;
guint8 top_field_first;
guint8 frame_pred_frame_dct;
guint8 concealment_motion_vectors;
guint8 q_scale_type;
guint8 intra_vlc_format;
guint8 alternate_scan;
guint8 repeat_first_field;
guint8 chroma_420_type;
guint8 progressive_frame;
};
struct MPEGGop
{
guint8 drop_frame_flag;
guint8 hour, minute, second, frame;
guint8 closed_gop;
guint8 broken_gop;
};
struct MPEGQuantMatrix
{
guint8 intra_quantizer_matrix[64];
guint8 non_intra_quantizer_matrix[64];
};
gboolean mpeg_util_parse_sequence_hdr (MPEGSeqHdr *hdr, GstBuffer *buffer);
gboolean mpeg_util_parse_sequence_extension (MPEGSeqExtHdr *hdr,
GstBuffer *buffer);
gboolean mpeg_util_parse_picture_hdr (MPEGPictureHdr * hdr, GstBuffer *buffer);
gboolean mpeg_util_parse_picture_coding_extension (MPEGPictureExt *ext,
GstBuffer *buffer);
gboolean mpeg_util_parse_gop (MPEGGop * gop, GstBuffer *buffer);
gboolean mpeg_util_parse_quant_matrix (MPEGQuantMatrix * qm, GstBuffer *buffer);
#endif
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