#include <string.h>
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/lfg.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "elbg.h"
#include "internal.h"

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 in_data[4], 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_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)

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)

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

AVCodec	ff_cinepak_encoder

Macro Definition Documentation

◆ CVID_HEADER_SIZE

#define CVID_HEADER_SIZE 10

Definition at line 50 of file cinepakenc.c.

Referenced by cinepak_encode_init(), rd_frame(), and write_cvid_header().

◆ STRIP_HEADER_SIZE

#define STRIP_HEADER_SIZE 12

Definition at line 51 of file cinepakenc.c.

Referenced by cinepak_encode_init(), rd_strip(), and write_strip_header().

◆ CHUNK_HEADER_SIZE

#define CHUNK_HEADER_SIZE 4

Definition at line 52 of file cinepakenc.c.

Referenced by calculate_mode_score(), cinepak_encode_init(), encode_mode(), and write_chunk_header().

◆ MB_SIZE

#define MB_SIZE 4

Definition at line 54 of file cinepakenc.c.

Referenced by calculate_skip_errors(), compute_mb_distortion(), copy_mb(), decode_frame(), encode_blocks(), encode_frame(), encode_init(), encode_mode(), ff_snow_common_init_after_header(), ff_snow_pred_block(), get_4block_rd(), get_dc(), iterative_me(), predict_slice_buffered(), quantize(), and rd_frame().

◆ MB_AREA

#define MB_AREA (MB_SIZE * MB_SIZE)

Definition at line 55 of file cinepakenc.c.

Referenced by calculate_mode_score(), cinepak_encode_init(), encode_mode(), and quantize().

◆ VECTOR_MAX

#define VECTOR_MAX 6

Definition at line 57 of file cinepakenc.c.

Referenced by cinepak_encode_init().

◆ CODEBOOK_MAX

#define CODEBOOK_MAX 256

Definition at line 58 of file cinepakenc.c.

Referenced by cinepak_encode_init(), and rd_strip().

◆ 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 131 of file cinepakenc.c.

◆ VE

#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 132 of file cinepakenc.c.

◆ CERTAIN

#define CERTAIN ( x ) ((x) != ENC_UNCERTAIN)

Definition at line 713 of file cinepakenc.c.

Referenced by quantize().

◆ SMALLEST_CODEBOOK

#define SMALLEST_CODEBOOK 1

Referenced by rd_strip().

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 154 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 274 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 392 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 399 of file cinepakenc.c.

Referenced by encode_mode().

◆ get_sub_picture()

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

static

Definition at line 447 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 464 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 503 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 523 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 542 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 687 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 714 of file cinepakenc.c.

Referenced by 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 829 of file cinepakenc.c.

Referenced by rd_strip().

◆ 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 852 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
	)

static

Definition at line 870 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 990 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
	)

static

Definition at line 1002 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 1151 of file cinepakenc.c.

◆ cinepak_encode_end()

static av_cold int cinepak_encode_end ( AVCodecContext * avctx )

static

Definition at line 1175 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 133 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 147 of file cinepakenc.c.

◆ ff_cinepak_encoder

AVCodec ff_cinepak_encoder

Initial value:

= {
    .name           = "cinepak",
    .long_name      = NULL_IF_CONFIG_SMALL("Cinepak"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_CINEPAK,
    .priv_data_size = sizeof(CinepakEncContext),
    .init           = cinepak_encode_init,
    .encode2        = cinepak_encode_frame,
    .close          = cinepak_encode_end,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB24, AV_PIX_FMT_GRAY8, AV_PIX_FMT_NONE },
    .priv_class     = &cinepak_class,
}

Definition at line 1197 of file cinepakenc.c.

Data Structures

Macros

Enumerations

Functions

Variables

Macro Definition Documentation

◆ CVID_HEADER_SIZE

◆ STRIP_HEADER_SIZE

◆ CHUNK_HEADER_SIZE

◆ MB_SIZE

◆ MB_AREA

◆ VECTOR_MAX

◆ CODEBOOK_MAX

◆ MAX_STRIPS

◆ MIN_STRIPS

◆ OFFSET

◆ VE

◆ CERTAIN

◆ SMALLEST_CODEBOOK

Enumeration Type Documentation

◆ CinepakMode

◆ mb_encoding

Function Documentation

◆ cinepak_encode_init()

◆ calculate_mode_score()

◆ write_chunk_header()

◆ encode_codebook()

◆ get_sub_picture()

◆ decode_v1_vector()

◆ decode_v4_vector()

◆ copy_mb()

◆ encode_mode()

◆ compute_mb_distortion()

◆ quantize()

◆ calculate_skip_errors()

◆ write_strip_header()

◆ rd_strip()

◆ write_cvid_header()

◆ rd_frame()

◆ cinepak_encode_frame()

◆ cinepak_encode_end()

Variable Documentation

◆ options

◆ cinepak_class

◆ ff_cinepak_encoder