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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* This program 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.
*
* This program 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#define PARSER_CACHE_MAX 32
#define PARSER_CONTINUE (PARSER_PRIV+0)
#define PARSER_DISCARD (PARSER_PRIV+1)
typedef void (*init_func)(bgav_video_parser_t*);
// typedef int (*parse_func)(bgav_video_parser_t*);
typedef void (*cleanup_func)(bgav_video_parser_t*);
typedef void (*reset_func)(bgav_video_parser_t*);
// typedef int (*parse_header_func)(bgav_video_parser_t*);
/* Parse a frame contained in p.
- Detect coding type, keyframe, field pcture, interlace mode,
repeat modes
- Extract a global header when it makes sense.
Return 0 on error, 1 else
*/
typedef int (*parse_frame_func)(bgav_video_parser_t*, bgav_packet_t * p, int64_t pts_orig);
/*
* Find a frame boundary in the bytebuffer (parser->buf)
*
* If a frame boundary is found:
*
* - Set parser->pos to the byte offset of the frame start
* - Set *skip to the offset *relative* to the frame start,
* after which we continue searching the next frame boundary.
* - Return 1
*
* If no frame boundary is found:
*
* - Set parser->pos to the position where we continue searching after
* new data was added.
* - Return 0.
*/
typedef int (*find_frame_boundary_func)(bgav_video_parser_t * p, int * skip);
typedef struct
{
int64_t packet_position;
int parser_position;
int size;
int64_t pts;
} packet_t;
/* MPEG-2 Intra slice refresh */
#define PARSER_NO_I_FRAMES (1<<0)
#define PARSER_GEN_PTS (1<<1)
#define PARSER_INITIALIZED (1<<2)
struct bgav_video_parser_s
{
bgav_stream_t * s;
int raw;
bgav_bytebuffer_t buf;
int flags;
int pos;
// parse_func parse;
// parse_header_func parse_header;
cleanup_func cleanup;
reset_func reset;
parse_frame_func parse_frame;
find_frame_boundary_func find_frame_boundary;
// const bgav_options_t * opt;
/* Extradata */
// uint8_t * header;
// int header_len;
/* Private data for parsers */
void * priv;
/* Raw byte offset of the start of the parser buffer */
int64_t raw_position;
/* Timescales */
gavl_video_format_t * format;
/* Packets */
packet_t * packets;
int packets_alloc;
int num_packets;
int low_delay;
int64_t timestamp;
int eof;
int have_sync;
int non_b_count;
int keyframe_count;
bgav_packet_t * out_packet;
bgav_packet_source_t src;
/* Packet position from which we can start decoding */
int64_t start_pos;
};
void bgav_video_parser_init_mpeg12(bgav_video_parser_t * parser);
void bgav_video_parser_init_h264(bgav_video_parser_t * parser);
void bgav_video_parser_init_mpeg4(bgav_video_parser_t * parser);
void bgav_video_parser_init_cavs(bgav_video_parser_t * parser);
void bgav_video_parser_init_vc1(bgav_video_parser_t * parser);
void bgav_video_parser_init_dirac(bgav_video_parser_t * parser);
void bgav_video_parser_init_mjpa(bgav_video_parser_t * parser);
void bgav_video_parser_init_dv(bgav_video_parser_t * parser);
void bgav_video_parser_init_jpeg(bgav_video_parser_t * parser);
void bgav_video_parser_init_png(bgav_video_parser_t * parser);
void bgav_video_parser_init_dvdsub(bgav_video_parser_t * parser);
void bgav_video_parser_init_vp8(bgav_video_parser_t * parser);
void bgav_video_parser_init_vp9(bgav_video_parser_t * parser);
void bgav_video_parser_flush(bgav_video_parser_t * parser, int bytes);
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