hvirtual/libmpeg3/video/seek.c File Reference

#include "../mpeg3private.h"
#include "../mpeg3protos.h"
#include "mpeg3video.h"
#include <stdlib.h>
#include <string.h>

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Defines
#define	PREV_CODE_MACRO
Functions
void	mpeg3video_toc_error ()
int	mpeg3video_drop_frames (mpeg3video_t *video, long frames, int cache_it)
unsigned int	mpeg3bits_next_startcode (mpeg3_bits_t *stream)
int	mpeg3video_next_code (mpeg3_bits_t *stream, unsigned int code)
int	mpeg3video_prev_code (mpeg3_demuxer_t *demuxer, unsigned int code)
long	mpeg3video_goptimecode_to_frame (mpeg3video_t *video)
int	mpeg3video_match_refframes (mpeg3video_t *video)
int	mpeg3video_seek_byte (mpeg3video_t *video, int64_t byte)
int	mpeg3video_seek_frame (mpeg3video_t *video, long frame)
int	mpeg3_rewind_video (mpeg3video_t *video)
int	mpeg3video_seek (mpeg3video_t *video)
int	mpeg3video_previous_frame (mpeg3video_t *video)

---

Define Documentation

#define PREV_CODE_MACRO

Value:

{ \
                current_code >>= 8; \
                current_code |= ((uint32_t)mpeg3demux_read_prev_char(demuxer)) << 24; \
}

Referenced by mpeg3video_prev_code().

---

Function Documentation

int mpeg3_rewind_video

(

mpeg3video_t *

video

)

Definition at line 192 of file seek.c.

References mpeg3_vtrack_t::frame_offsets, mpeg3bits_seek_byte(), mpeg3video_t::track, and mpeg3video_t::vstream.

Referenced by mpeg3video_new(), and mpeg3video_seek().

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unsigned int mpeg3bits_next_startcode

(

mpeg3_bits_t *

stream

)

Definition at line 51 of file seek.c.

References MPEG3_PACKET_START_CODE_PREFIX, mpeg3bits_byte_align(), mpeg3bits_eof, mpeg3bits_getbyte_noptr(), and mpeg3bits_showbits32_noptr().

Referenced by mpeg3video_ext_user_data(), and mpeg3video_get_header().

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int mpeg3video_drop_frames	(	mpeg3video_t *	video,
		long	frames,
		int	cache_it
	)

Definition at line 15 of file seek.c.

References mpeg3video_t::chrom_height, mpeg3video_t::chrom_width, mpeg3video_t::coded_picture_height, mpeg3video_t::coded_picture_width, mpeg3_vtrack_t::frame_cache, mpeg3video_t::framenum, mpeg3_cache_put_frame(), mpeg3video_read_frame_backend(), mpeg3video_t::output_src, and mpeg3video_t::track.

Referenced by mpeg3_drop_frames(), and mpeg3video_seek().

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long mpeg3video_goptimecode_to_frame

(

mpeg3video_t *

video

)

Definition at line 129 of file seek.c.

References mpeg3video_t::first_frame, mpeg3_timecode_t::frame, mpeg3video_t::frame_rate, mpeg3video_t::gop_timecode, mpeg3_timecode_t::hour, mpeg3_timecode_t::minute, and mpeg3_timecode_t::second.

int mpeg3video_match_refframes

(

mpeg3video_t *

video

)

Definition at line 139 of file seek.c.

References mpeg3video_t::chrom_height, mpeg3video_t::chrom_width, mpeg3video_t::coded_picture_height, mpeg3video_t::coded_picture_width, memcpy, mpeg3video_t::newframe, mpeg3video_t::oldrefframe, mpeg3video_t::refframe, and src.

int mpeg3video_next_code	(	mpeg3_bits_t *	stream,
		unsigned int	code
	)

Definition at line 96 of file seek.c.

References mpeg3bits_eof, mpeg3bits_getbyte_noptr(), and mpeg3bits_showbits32_noptr().

Referenced by mpeg3video_new().

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int mpeg3video_prev_code	(	mpeg3_demuxer_t *	demuxer,
		unsigned int	code
	)

Definition at line 107 of file seek.c.

References mpeg3demux_bof(), and PREV_CODE_MACRO.

Referenced by mpeg3video_new(), mpeg3video_previous_frame(), and mpeg3video_seek().

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int mpeg3video_previous_frame

(

mpeg3video_t *

video

)

Definition at line 382 of file seek.c.

References mpeg3_bits_t::demuxer, mpeg3video_t::has_gops, MPEG3_GOP_START_CODE, MPEG3_PICTURE_START_CODE, MPEG3_SEQUENCE_START_CODE, mpeg3bits_reset(), mpeg3demux_eof(), mpeg3demux_start_forward(), mpeg3demux_start_reverse(), mpeg3demux_tell_byte(), mpeg3video_prev_code(), mpeg3video_read_frame_backend(), mpeg3video_t::repeat_count, and mpeg3video_t::vstream.

Referenced by mpeg3_previous_frame().

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int mpeg3video_seek

(

mpeg3video_t *

video

)

Definition at line 205 of file seek.c.

References mpeg3video_t::byte_seek, mpeg3_bits_t::demuxer, mpeg3video_t::file, mpeg3_vtrack_t::frame_cache, mpeg3_vtrack_t::frame_offsets, mpeg3video_t::frame_seek, mpeg3video_t::framenum, mpeg3video_t::has_gops, mpeg3_vtrack_t::keyframe_numbers, mpeg3video_t::maxframe, MPEG3_GOP_START_CODE, mpeg3_reset_cache(), mpeg3_reset_subtitles(), mpeg3_rewind_video(), MPEG3_SEEK_THRESHOLD, MPEG3_SEQUENCE_START_CODE, mpeg3bits_reset(), mpeg3bits_seek_byte(), mpeg3demux_eof(), mpeg3demux_reset_pts(), mpeg3demux_seek_byte(), mpeg3demux_start_forward(), mpeg3demux_start_reverse(), mpeg3demux_tell_byte(), mpeg3video_drop_frames(), mpeg3video_get_firstframe(), mpeg3video_prev_code(), mpeg3video_read_frame_backend(), mpeg3video_toc_error(), mpeg3video_t::repeat_count, mpeg3_vtrack_t::total_keyframe_numbers, mpeg3video_t::track, and mpeg3video_t::vstream.

Referenced by mpeg3video_read_frame(), mpeg3video_read_yuvframe(), and mpeg3video_read_yuvframe_ptr().

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int mpeg3video_seek_byte	(	mpeg3video_t *	video,
		int64_t	byte
	)

Definition at line 170 of file seek.c.

References mpeg3video_t::byte_seek, mpeg3_bits_t::demuxer, mpeg3video_t::file, mpeg3bits_seek_byte(), and mpeg3video_t::vstream.

Referenced by mpeg3_seek_byte().

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int mpeg3video_seek_frame	(	mpeg3video_t *	video,
		long	frame
	)

Definition at line 186 of file seek.c.

References mpeg3video_t::frame_seek.

Referenced by mpeg3_set_frame().

void mpeg3video_toc_error

(

)

Definition at line 7 of file seek.c.

References fprintf.

Referenced by mpeg3video_seek().