cinepakenc.c File Reference

#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/lfg.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "elbg.h"
#include "encode.h"

Go to the source code of this file.

Data Structures
struct	mb_info
struct	strip_info
struct	CinepakEncContext

Macros
#define	CVID_HEADER_SIZE   10
#define	STRIP_HEADER_SIZE   12
#define	CHUNK_HEADER_SIZE   4
#define	MB_SIZE   4
#define	MB_AREA   (MB_SIZE * MB_SIZE)
#define	VECTOR_MAX   6
#define	CODEBOOK_MAX   256
#define	MAX_STRIPS   32
#define	MIN_STRIPS   1
#define	OFFSET(x)   offsetof(CinepakEncContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
#define	CERTAIN(x)   ((x) != ENC_UNCERTAIN)
#define	SMALLEST_CODEBOOK   1

Enumerations
enum	CinepakMode { MODE_V1_ONLY = 0, MODE_V1_V4, MODE_MC, MODE_COUNT }
enum	mb_encoding { ENC_V1, ENC_V4, ENC_SKIP, ENC_UNCERTAIN }

Functions
static av_cold int	cinepak_encode_init (AVCodecContext *avctx)
static int64_t	calculate_mode_score (CinepakEncContext *s, int h, strip_info *info, int report, int *training_set_v1_shrunk, int *training_set_v4_shrunk)
static int	write_chunk_header (unsigned char *buf, int chunk_type, int chunk_size)
static int	encode_codebook (CinepakEncContext *s, int *codebook, int size, int chunk_type_yuv, int chunk_type_gray, unsigned char *buf)
static void	get_sub_picture (CinepakEncContext *s, int x, int y, uint8_t *const in_data[4], const int in_linesize[4], uint8_t *out_data[4], int out_linesize[4])
static void	decode_v1_vector (CinepakEncContext *s, uint8_t *data[4], int linesize[4], int v1_vector, strip_info *info)
static void	decode_v4_vector (CinepakEncContext *s, uint8_t *data[4], int linesize[4], int *v4_vector, strip_info *info)
static void	copy_mb (CinepakEncContext *s, uint8_t *a_data[4], int a_linesize[4], uint8_t *b_data[4], int b_linesize[4])
static int	encode_mode (CinepakEncContext *s, int h, uint8_t *scratch_data[4], int scratch_linesize[4], uint8_t *last_data[4], int last_linesize[4], strip_info *info, unsigned char *buf)
static int	compute_mb_distortion (CinepakEncContext *s, uint8_t *a_data[4], int a_linesize[4], uint8_t *b_data[4], int b_linesize[4])
static int	quantize (CinepakEncContext *s, int h, uint8_t *data[4], int linesize[4], int v1mode, strip_info *info, mb_encoding encoding)
static void	calculate_skip_errors (CinepakEncContext *s, int h, uint8_t *last_data[4], int last_linesize[4], uint8_t *data[4], int linesize[4], strip_info *info)
static void	write_strip_keyframe (unsigned char *buf, int keyframe)
static void	write_strip_header (CinepakEncContext *s, int y, int h, int keyframe, unsigned char *buf, int strip_size)
static int	rd_strip (CinepakEncContext *s, int y, int h, int keyframe, uint8_t *last_data[4], int last_linesize[4], uint8_t *data[4], int linesize[4], uint8_t *scratch_data[4], int scratch_linesize[4], unsigned char *buf, int64_t *best_score, int *no_skip)
static int	write_cvid_header (CinepakEncContext *s, unsigned char *buf, int num_strips, int data_size, int isakeyframe)
static int	rd_frame (CinepakEncContext *s, const AVFrame *frame, int isakeyframe, unsigned char *buf, int buf_size, int *got_keyframe)
static int	cinepak_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static av_cold int	cinepak_encode_end (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	cinepak_class
const FFCodec	ff_cinepak_encoder

Macro Definition Documentation

CVID_HEADER_SIZE

#define CVID_HEADER_SIZE   10

Definition at line 50 of file cinepakenc.c.

STRIP_HEADER_SIZE

#define STRIP_HEADER_SIZE   12

Definition at line 51 of file cinepakenc.c.

CHUNK_HEADER_SIZE

#define CHUNK_HEADER_SIZE   4

Definition at line 52 of file cinepakenc.c.

MB_SIZE

#define MB_SIZE   4

Definition at line 54 of file cinepakenc.c.

MB_AREA

#define MB_AREA   (MB_SIZE * MB_SIZE)

Definition at line 55 of file cinepakenc.c.

VECTOR_MAX

#define VECTOR_MAX   6

Definition at line 57 of file cinepakenc.c.

CODEBOOK_MAX

#define CODEBOOK_MAX   256

Definition at line 58 of file cinepakenc.c.

MAX_STRIPS

#define MAX_STRIPS   32

Definition at line 60 of file cinepakenc.c.

MIN_STRIPS

#define MIN_STRIPS   1

Definition at line 61 of file cinepakenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(CinepakEncContext, x)

Definition at line 132 of file cinepakenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 133 of file cinepakenc.c.

CERTAIN

#define CERTAIN

(

x

)

((x) != ENC_UNCERTAIN)

Definition at line 697 of file cinepakenc.c.

SMALLEST_CODEBOOK

#define SMALLEST_CODEBOOK   1

Enumeration Type Documentation

CinepakMode

enum CinepakMode

Enumerator
MODE_V1_ONLY
MODE_V1_V4
MODE_MC
MODE_COUNT

Definition at line 71 of file cinepakenc.c.

mb_encoding

enum mb_encoding

Enumerator
ENC_V1
ENC_V4
ENC_SKIP
ENC_UNCERTAIN

Definition at line 79 of file cinepakenc.c.

Function Documentation

cinepak_encode_init()

static av_cold int cinepak_encode_init ( AVCodecContext *  avctx )

static

Definition at line 155 of file cinepakenc.c.

calculate_mode_score()

static int64_t calculate_mode_score ( CinepakEncContext *  s, int  h, strip_info *  info, int  report, int *  training_set_v1_shrunk, int *  training_set_v4_shrunk  )

static

Definition at line 257 of file cinepakenc.c.

Referenced by rd_strip().

write_chunk_header()

static int write_chunk_header ( unsigned char *  buf, int  chunk_type, int  chunk_size  )

static

Definition at line 375 of file cinepakenc.c.

Referenced by encode_codebook(), and encode_mode().

encode_codebook()

static int encode_codebook ( CinepakEncContext *  s, int *  codebook, int  size, int  chunk_type_yuv, int  chunk_type_gray, unsigned char *  buf  )

static

Definition at line 382 of file cinepakenc.c.

Referenced by encode_mode().

get_sub_picture()

static void get_sub_picture ( CinepakEncContext *  s, int  x, int  y, uint8_t *const  in_data[4], const int  in_linesize[4], uint8_t *  out_data[4], int  out_linesize[4]  )

static

Definition at line 430 of file cinepakenc.c.

Referenced by calculate_skip_errors(), encode_mode(), quantize(), and rd_frame().

decode_v1_vector()

static void decode_v1_vector ( CinepakEncContext *  s, uint8_t *  data[4], int  linesize[4], int  v1_vector, strip_info *  info  )

static

Definition at line 447 of file cinepakenc.c.

Referenced by encode_mode(), and quantize().

decode_v4_vector()

static void decode_v4_vector ( CinepakEncContext *  s, uint8_t *  data[4], int  linesize[4], int *  v4_vector, strip_info *  info  )

static

Definition at line 486 of file cinepakenc.c.

Referenced by encode_mode(), and quantize().

copy_mb()

static void copy_mb ( CinepakEncContext *  s, uint8_t *  a_data[4], int  a_linesize[4], uint8_t *  b_data[4], int  b_linesize[4]  )

static

Definition at line 506 of file cinepakenc.c.

Referenced by encode_mode(), and mjpeg_decode_scan().

encode_mode()

static int encode_mode ( CinepakEncContext *  s, int  h, uint8_t *  scratch_data[4], int  scratch_linesize[4], uint8_t *  last_data[4], int  last_linesize[4], strip_info *  info, unsigned char *  buf  )

static

Definition at line 525 of file cinepakenc.c.

Referenced by rd_strip().

compute_mb_distortion()

static int compute_mb_distortion ( CinepakEncContext *  s, uint8_t *  a_data[4], int  a_linesize[4], uint8_t *  b_data[4], int  b_linesize[4]  )

static

Definition at line 671 of file cinepakenc.c.

Referenced by calculate_skip_errors(), and quantize().

quantize()

static int quantize ( CinepakEncContext *  s, int  h, uint8_t *  data[4], int  linesize[4], int  v1mode, strip_info *  info, mb_encoding  encoding  )

static

Definition at line 698 of file cinepakenc.c.

Referenced by aptx_quantize_difference(), and rd_strip().

calculate_skip_errors()

static void calculate_skip_errors ( CinepakEncContext *  s, int  h, uint8_t *  last_data[4], int  last_linesize[4], uint8_t *  data[4], int  linesize[4], strip_info *  info  )

static

Definition at line 813 of file cinepakenc.c.

Referenced by rd_strip().

write_strip_keyframe()

static void write_strip_keyframe ( unsigned char *  buf, int  keyframe  )

static

Definition at line 836 of file cinepakenc.c.

Referenced by rd_frame(), and write_strip_header().

write_strip_header()

static void write_strip_header ( CinepakEncContext *  s, int  y, int  h, int  keyframe, unsigned char *  buf, int  strip_size  )

static

Definition at line 846 of file cinepakenc.c.

Referenced by rd_strip().

rd_strip()

static int rd_strip ( CinepakEncContext *  s, int  y, int  h, int  keyframe, uint8_t *  last_data[4], int  last_linesize[4], uint8_t *  data[4], int  linesize[4], uint8_t *  scratch_data[4], int  scratch_linesize[4], unsigned char *  buf, int64_t *  best_score, int *  no_skip  )

static

Definition at line 859 of file cinepakenc.c.

Referenced by rd_frame().

write_cvid_header()

static int write_cvid_header ( CinepakEncContext *  s, unsigned char *  buf, int  num_strips, int  data_size, int  isakeyframe  )

static

Definition at line 995 of file cinepakenc.c.

Referenced by rd_frame().

rd_frame()

static int rd_frame ( CinepakEncContext *  s, const AVFrame *  frame, int  isakeyframe, unsigned char *  buf, int  buf_size, int *  got_keyframe  )

static

Definition at line 1007 of file cinepakenc.c.

Referenced by cinepak_encode_frame().

cinepak_encode_frame()

static int cinepak_encode_frame ( AVCodecContext *  avctx, AVPacket *  pkt, const AVFrame *  frame, int *  got_packet  )

static

Definition at line 1167 of file cinepakenc.c.

cinepak_encode_end()

static av_cold int cinepak_encode_end ( AVCodecContext *  avctx )

static

Definition at line 1193 of file cinepakenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "max_extra_cb_iterations", "Max extra codebook recalculation passes, more is better and slower",
      OFFSET(max_extra_cb_iterations),  AV_OPT_TYPE_INT, { .i64 =          2 },          0, INT_MAX,                 VE },
    { "skip_empty_cb",           "Avoid wasting bytes, ignore vintage MacOS decoder",
      OFFSET(skip_empty_cb),            AV_OPT_TYPE_BOOL, { .i64 =         0 },          0, 1,                       VE },
    { "max_strips",              "Limit strips/frame, vintage compatible is 1..3, otherwise the more the better",
      OFFSET(max_max_strips),           AV_OPT_TYPE_INT, { .i64 =          3 }, MIN_STRIPS, MAX_STRIPS,              VE },
    { "min_strips",              "Enforce min strips/frame, more is worse and faster, must be <= max_strips",
      OFFSET(min_min_strips),           AV_OPT_TYPE_INT, { .i64 = MIN_STRIPS }, MIN_STRIPS, MAX_STRIPS,              VE },
    { "strip_number_adaptivity", "How fast the strip number adapts, more is slightly better, much slower",
      OFFSET(strip_number_delta_range), AV_OPT_TYPE_INT, { .i64 =          0 },          0, MAX_STRIPS - MIN_STRIPS, VE },
    { NULL },
}

Definition at line 134 of file cinepakenc.c.

cinepak_class

const AVClass cinepak_class

static

Initial value:

= {
    .class_name = "cinepak",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 148 of file cinepakenc.c.

ff_cinepak_encoder

const FFCodec ff_cinepak_encoder

Initial value:

= {
    .p.name         = "cinepak",
    CODEC_LONG_NAME("Cinepak"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_CINEPAK,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .priv_data_size = sizeof(CinepakEncContext),
    .init           = cinepak_encode_init,
    FF_CODEC_ENCODE_CB(cinepak_encode_frame),
    .close          = cinepak_encode_end,
    .p.pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB24, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE },
    .p.priv_class   = &cinepak_class,
    .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
}

Definition at line 1216 of file cinepakenc.c.