uncodedframecrcenc.c File Reference

#include "libavutil/adler32.h"
#include "libavutil/avassert.h"
#include "libavutil/bprint.h"
#include "libavutil/imgutils.h"
#include "libavutil/pixdesc.h"
#include "avformat.h"
#include "internal.h"

Go to the source code of this file.

Macros
#define	DEFINE_CKSUM_LINE(name, type, conv)

Functions
static void	video_frame_cksum (AVBPrint *bp, AVFrame *frame)
static void	audio_frame_cksum (AVBPrint *bp, AVFrame *frame)
static int	write_header (struct AVFormatContext *s)
static int	write_frame (struct AVFormatContext *s, int stream_index, AVFrame **frame, unsigned flags)
static int	write_packet (struct AVFormatContext *s, AVPacket *pkt)

Variables
AVOutputFormat	ff_uncodedframecrc_muxer

Macro Definition Documentation

DEFINE_CKSUM_LINE

#define DEFINE_CKSUM_LINE	(		name,
			type,
			conv
	)

Value:

static void cksum_line_ ## name(unsigned *cksum, void *data, unsigned size) \
{ \
    type *p = data; \
    unsigned a = *cksum & 0xFFFF, b = *cksum >> 16; \
    for (; size > 0; size--, p++) { \
        a = (a + (unsigned)(conv)) % 65521; \
        b = (b + a) % 65521; \
    } \
    *cksum = a | (b << 16); \
}

Definition at line 30 of file uncodedframecrcenc.c.

Function Documentation

video_frame_cksum()

static void video_frame_cksum ( AVBPrint *  bp, AVFrame *  frame  )

static

Definition at line 48 of file uncodedframecrcenc.c.

Referenced by write_frame().

audio_frame_cksum()

static void audio_frame_cksum ( AVBPrint *  bp, AVFrame *  frame  )

static

Definition at line 77 of file uncodedframecrcenc.c.

Referenced by write_frame().

write_header()

static int write_header ( struct AVFormatContext *  s )

static

Definition at line 122 of file uncodedframecrcenc.c.

write_frame()

static int write_frame ( struct AVFormatContext *  s, int  stream_index, AVFrame **  frame, unsigned  flags  )

static

Definition at line 127 of file uncodedframecrcenc.c.

write_packet()

static int write_packet ( struct AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 162 of file uncodedframecrcenc.c.

Variable Documentation

ff_uncodedframecrc_muxer

AVOutputFormat ff_uncodedframecrc_muxer

Initial value:

= {
    .name              = "uncodedframecrc",
    .long_name         = NULL_IF_CONFIG_SMALL("uncoded framecrc testing"),
    .audio_codec       = AV_CODEC_ID_PCM_S16LE,
    .video_codec       = AV_CODEC_ID_RAWVIDEO,
    .write_header      = write_header,
    .write_packet      = write_packet,
    .write_uncoded_frame = write_frame,
    .flags             = AVFMT_VARIABLE_FPS | AVFMT_TS_NONSTRICT |
                         AVFMT_TS_NEGATIVE,
}

Definition at line 167 of file uncodedframecrcenc.c.