trim.c File Reference

#include "libavutil/fifo.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/opt.h"
#include "libavutil/timestamp.h"
#include "libavcodec/bsf.h"
#include "libavcodec/bsf_internal.h"

Go to the source code of this file.

Data Structures
struct	TrimBound
struct	TrimContext

Macros
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_BSF_PARAM)

Enumerations
enum	TrimType {   TRIM_PTS , TRIM_DTS , TRIM_PKT_INDEX , TRIM_MSEC_PT ,   TRIM_MSEC_DT , TRIM_DUR_TS , TRIM_DUR_T_MSEC }
enum	TrimAxis { AXIS_PTS , AXIS_DTS , AXIS_INDEX , AXIS_OUT_INDEX }

Functions
static int	add_checked (AVBSFContext *ctx, int64_t *acc, int64_t delta, const char *what)
static int64_t	packet_axis (const TrimContext *s, const AVPacket *pkt, enum TrimAxis axis)
static enum TrimAxis	monotonic_axis (enum TrimAxis axis)
static int	axis_is_time (enum TrimAxis axis)
static int	convert_checked (AVBSFContext *ctx, int64_t *value, AVRational from, AVRational to, const char *what)
static int	time_base_to_samples (AVBSFContext *ctx, int64_t *value, const char *what)
static int	samples_to_time_base (AVBSFContext *ctx, int64_t *value, const char *what)
static int64_t	packet_samples (AVBSFContext *ctx, const AVPacket *pkt)
static int64_t	packet_skip_consumed (AVBSFContext *ctx, const AVPacket *pkt)
static int	packet_span (AVBSFContext *ctx, const AVPacket *pkt, enum TrimAxis axis, int64_t *span)
static int	bound_init (AVBSFContext *ctx, TrimBound *b, int active, int64_t value, int type, int rel, const char *name)
static void	bound_reset (TrimBound *b)
static int	bound_resolve (AVBSFContext *ctx, TrimBound *b, int64_t ref, const char *name)
static int	trim_head (AVBSFContext *ctx, const AVPacket *pkt, int64_t *head)
static int	trim_tail (AVBSFContext *ctx, const AVPacket *pkt, int64_t head, int64_t *tail)
static int	trim_audio (AVBSFContext *ctx, AVPacket *pkt, int64_t head, int keep)
static int	trim_shift (AVBSFContext *ctx, AVPacket *pkt, int64_t head)
static void	preroll_clear (AVBSFContext *ctx)
static void	preroll_export (AVBSFContext *ctx, AVPacket *pkt)
static int	preroll_hold (AVBSFContext *ctx, AVPacket *pkt)
static void	log_exported_packet (AVBSFContext *ctx, const char *which, int64_t idx, int64_t pts, int64_t dts, int key)
static void	packet_exported (AVBSFContext *ctx, const AVPacket *pkt)
static void	trim_report (AVBSFContext *ctx)
static int	trim_filter (AVBSFContext *ctx, AVPacket *pkt)
static void	trim_reset (AVBSFContext *ctx)
static void	trim_flush (AVBSFContext *ctx)
static void	trim_close (AVBSFContext *ctx)
static int	trim_init (AVBSFContext *ctx)

Variables
struct {
enum TrimAxis   axis
int   msec
int   relative
}	trim_types []
static const AVOption	trim_options []
static const AVClass	trim_class
const FFBitStreamFilter	ff_trim_bsf

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(TrimContext, x)

Definition at line 745 of file trim.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_BSF_PARAM)

Definition at line 746 of file trim.c.

Enumeration Type Documentation

TrimType

enum TrimType

Enumerator
TRIM_PTS
TRIM_DTS
TRIM_PKT_INDEX
TRIM_MSEC_PT
TRIM_MSEC_DT
TRIM_DUR_TS
TRIM_DUR_T_MSEC

Definition at line 27 of file trim.c.

TrimAxis

enum TrimAxis

Enumerator
AXIS_PTS
AXIS_DTS
AXIS_INDEX
AXIS_OUT_INDEX

Definition at line 39 of file trim.c.

Function Documentation

add_checked()

static int add_checked ( AVBSFContext * ctx, int64_t * acc, int64_t delta, const char * what )

static

Definition at line 108 of file trim.c.

Referenced by bound_resolve(), trim_shift(), and trim_tail().

packet_axis()

static int64_t packet_axis ( const TrimContext * s, const AVPacket * pkt, enum TrimAxis axis )

static

Definition at line 122 of file trim.c.

Referenced by trim_head(), and trim_tail().

monotonic_axis()

static enum TrimAxis monotonic_axis ( enum TrimAxis axis )

static

Definition at line 134 of file trim.c.

Referenced by trim_tail().

axis_is_time()

static int axis_is_time ( enum TrimAxis axis )

static

Definition at line 140 of file trim.c.

Referenced by packet_span(), and trim_tail().

convert_checked()

static int convert_checked ( AVBSFContext * ctx, int64_t * value, AVRational from, AVRational to, const char * what )

static

Definition at line 147 of file trim.c.

Referenced by samples_to_time_base(), and time_base_to_samples().

time_base_to_samples()

static int time_base_to_samples ( AVBSFContext * ctx, int64_t * value, const char * what )

static

Definition at line 162 of file trim.c.

Referenced by trim_audio().

samples_to_time_base()

static int samples_to_time_base ( AVBSFContext * ctx, int64_t * value, const char * what )

static

Definition at line 169 of file trim.c.

Referenced by packet_span(), and trim_audio().

packet_samples()

static int64_t packet_samples ( AVBSFContext * ctx, const AVPacket * pkt )

static

Definition at line 177 of file trim.c.

Referenced by flush_silent_frames(), packet_skip_consumed(), packet_span(), and trim_audio().

packet_skip_consumed()

static int64_t packet_skip_consumed ( AVBSFContext * ctx, const AVPacket * pkt )

static

Definition at line 184 of file trim.c.

Referenced by trim_audio().

packet_span()

static int packet_span ( AVBSFContext * ctx, const AVPacket * pkt, enum TrimAxis axis, int64_t * span )

static

Definition at line 200 of file trim.c.

Referenced by trim_head(), and trim_tail().

bound_init()

static int bound_init ( AVBSFContext * ctx, TrimBound * b, int active, int64_t value, int type, int rel, const char * name )

static

Definition at line 220 of file trim.c.

Referenced by trim_init().

bound_reset()

static void bound_reset ( TrimBound * b )

static

Definition at line 251 of file trim.c.

Referenced by trim_reset().

bound_resolve()

static int bound_resolve ( AVBSFContext * ctx, TrimBound * b, int64_t ref, const char * name )

static

Definition at line 257 of file trim.c.

Referenced by trim_head(), and trim_tail().

trim_head()

static int trim_head ( AVBSFContext * ctx, const AVPacket * pkt, int64_t * head )

static

Definition at line 272 of file trim.c.

Referenced by trim_filter().

trim_tail()

static int trim_tail ( AVBSFContext * ctx, const AVPacket * pkt, int64_t head, int64_t * tail )

static

Definition at line 310 of file trim.c.

Referenced by trim_audio(), and trim_shift().

trim_audio()

static int trim_audio ( AVBSFContext * ctx, AVPacket * pkt, int64_t head, int keep )

static

Definition at line 367 of file trim.c.

Referenced by trim_filter().

trim_shift()

static int trim_shift ( AVBSFContext * ctx, AVPacket * pkt, int64_t head )

static

Definition at line 475 of file trim.c.

Referenced by trim_filter().

preroll_clear()

static void preroll_clear ( AVBSFContext * ctx )

static

Definition at line 507 of file trim.c.

Referenced by preroll_hold(), trim_close(), trim_filter(), and trim_reset().

preroll_export()

static void preroll_export ( AVBSFContext * ctx, AVPacket * pkt )

static

Definition at line 518 of file trim.c.

Referenced by trim_filter().

preroll_hold()

static int preroll_hold ( AVBSFContext * ctx, AVPacket * pkt )

static

Definition at line 534 of file trim.c.

Referenced by trim_filter().

log_exported_packet()

static void log_exported_packet ( AVBSFContext * ctx, const char * which, int64_t idx, int64_t pts, int64_t dts, int key )

static

Definition at line 566 of file trim.c.

Referenced by packet_exported(), and trim_report().

packet_exported()

static void packet_exported ( AVBSFContext * ctx, const AVPacket * pkt )

static

Definition at line 574 of file trim.c.

Referenced by trim_filter().

trim_report()

static void trim_report ( AVBSFContext * ctx )

static

Definition at line 588 of file trim.c.

Referenced by trim_close(), and trim_flush().

trim_filter()

static int trim_filter ( AVBSFContext * ctx, AVPacket * pkt )

static

Definition at line 600 of file trim.c.

trim_reset()

static void trim_reset ( AVBSFContext * ctx )

static

Definition at line 658 of file trim.c.

Referenced by trim_flush(), and trim_init().

trim_flush()

static void trim_flush ( AVBSFContext * ctx )

static

Definition at line 676 of file trim.c.

trim_close()

static void trim_close ( AVBSFContext * ctx )

static

Definition at line 682 of file trim.c.

trim_init()

static int trim_init ( AVBSFContext * ctx )

static

Definition at line 692 of file trim.c.

Variable Documentation

axis

enum TrimAxis axis

Definition at line 49 of file trim.c.

Referenced by axis_is_time(), draw_axis_rgb(), draw_axis_yuv(), monotonic_axis(), mov_read_imir(), packet_axis(), packet_span(), and vp4_get_mv().

msec

int msec

Definition at line 50 of file trim.c.

Referenced by bound_init(), and read_header().

relative

int relative

Definition at line 51 of file trim.c.

Referenced by bound_init(), decode_format80(), draw_cubic_curve_to(), draw_quad_curve_to(), ff_init_slice_from_src(), ff_sws_color_map_generate_dynamic(), queue_frame(), and vgs_eval().

[struct]

const struct { ... } trim_types[]

Initial value:

= {
    [TRIM_PTS]        = { AXIS_PTS,   0, 0 },
    [TRIM_DTS]        = { AXIS_DTS,   0, 0 },
    [TRIM_PKT_INDEX]  = { AXIS_INDEX, 0, 0 },
    [TRIM_MSEC_PT]    = { AXIS_PTS,   1, 0 },
    [TRIM_MSEC_DT]    = { AXIS_DTS,   1, 0 },
    [TRIM_DUR_TS]     = { AXIS_PTS,   0, 1 },
    [TRIM_DUR_T_MSEC] = { AXIS_PTS,   1, 1 },
}

Referenced by bound_init().

trim_options

const AVOption trim_options[]

static

Definition at line 747 of file trim.c.

trim_class

const AVClass trim_class

static

Initial value:

= {
    .class_name = "trim",
    .item_name  = av_default_item_name,
    .option     = trim_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 783 of file trim.c.

ff_trim_bsf

const FFBitStreamFilter ff_trim_bsf

Initial value:

= {
    .p.name         = "trim",
    .p.priv_class   = &trim_class,
    .priv_data_size = sizeof(TrimContext),
    .init           = trim_init,
    .close          = trim_close,
    .flush          = trim_flush,
    .filter         = trim_filter,
}

Definition at line 790 of file trim.c.