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/*
* Copyright (C) 2008 Julian Scheel
*
* This file is part of xine, a free video player.
*
* xine is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* xine 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* h264_parser.h: Almost full-features H264 NAL-Parser
*/
#ifndef NAL_PARSER_H_
#define NAL_PARSER_H_
#include <stdlib.h>
#include <xine/xine_internal.h>
#include "nal.h"
#include "dpb.h"
#define MAX_FRAME_SIZE 1024*1024
/* specifies wether the parser last parsed
* non-vcl or vcl nal units. depending on
* this the access unit boundaries are detected
*/
enum parser_position {
NON_VCL,
VCL
};
enum parser_flags {
CPB_DPB_DELAYS_PRESENT = 0x01,
PIC_STRUCT_PRESENT = 0x02
};
struct h264_parser {
uint8_t buf[MAX_FRAME_SIZE];
uint32_t buf_len;
/* prebuf is used to store the currently
* processed nal unit */
uint8_t prebuf[MAX_FRAME_SIZE];
uint32_t prebuf_len;
uint32_t next_nal_position;
uint8_t last_nal_res;
uint8_t nal_size_length;
uint32_t next_nal_size;
uint8_t *nal_size_length_buf;
uint8_t have_nal_size_length_buf;
enum parser_position position;
struct coded_picture *pic;
struct nal_unit *last_vcl_nal;
struct nal_buffer *sps_buffer;
struct nal_buffer *pps_buffer;
uint32_t prev_pic_order_cnt_lsb;
uint32_t prev_pic_order_cnt_msb;
uint32_t frame_num_offset;
int32_t prev_top_field_order_cnt;
uint32_t curr_pic_num;
uint16_t flag_mask;
/* this is dpb used for reference frame
* heading to vdpau + unordered frames
*/
struct dpb *dpb;
xine_t *xine;
};
int parse_nal(uint8_t *buf, int buf_len, struct h264_parser *parser,
struct coded_picture **completed_picture);
int seek_for_nal(uint8_t *buf, int buf_len, struct h264_parser *parser);
struct h264_parser* init_parser(xine_t *xine);
void reset_parser(struct h264_parser *parser);
void free_parser(struct h264_parser *parser);
int parse_frame(struct h264_parser *parser, uint8_t *inbuf, int inbuf_len,
int64_t pts,
uint8_t **ret_buf, uint32_t *ret_len, struct coded_picture **ret_pic);
/* this has to be called after decoding the frame delivered by parse_frame,
* but before adding a decoded frame to the dpb.
*/
void process_mmc_operations(struct h264_parser *parser, struct coded_picture *picture);
void parse_codec_private(struct h264_parser *parser, uint8_t *inbuf, int inbuf_len);
#endif
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