rpzaenc.c File Reference

#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "put_bits.h"

Go to the source code of this file.

Data Structures
struct	RpzaContext
struct	rgb
struct	BlockInfo

Macros
#define	SQR(x)   ((x) * (x))
#define	GET_CHAN(color, chan)   (((color) >> ((chan) * 5) & 0x1F) * 8)
#define	R(color)   GET_CHAN(color, RED)
#define	G(color)   GET_CHAN(color, GREEN)
#define	B(color)   GET_CHAN(color, BLUE)
#define	OFFSET(x)   offsetof(RpzaContext, x)
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Enumerations
enum	channel_offset { RED = 2, GREEN = 1, BLUE = 0 }

Functions
static void	get_colors (uint8_t *min, uint8_t *max, uint8_t color4[4][3])
static int	get_block_info (BlockInfo *bi, int block)
static uint16_t	rgb24_to_rgb555 (uint8_t *rgb24)
static int	diff_colors (uint8_t *colorA, uint8_t *colorB)
static int	max_component_diff (uint16_t *colorA, uint16_t *colorB)
static void	get_max_component_diff (BlockInfo *bi, uint16_t *block_ptr, uint8_t *min, uint8_t *max, channel_offset *chan)
static int	compare_blocks (uint16_t *block1, uint16_t *block2, BlockInfo *bi, int thresh)
static int	leastsquares (uint16_t *block_ptr, BlockInfo *bi, channel_offset xchannel, channel_offset ychannel, double *slope, double *y_intercept, double *correlation_coef)
static int	calc_lsq_max_fit_error (uint16_t *block_ptr, BlockInfo *bi, int min, int max, int tmp_min, int tmp_max, channel_offset xchannel, channel_offset ychannel)
static int	match_color (uint16_t *color, uint8_t colors[4][3])
static int	encode_four_color_block (uint8_t *min_color, uint8_t *max_color, PutBitContext *pb, uint16_t *block_ptr, BlockInfo *bi)
static void	update_block_in_prev_frame (const uint16_t *src_pixels, uint16_t *dest_pixels, const BlockInfo *bi, int block_counter)
static int	update_block_stats (RpzaContext *s, BlockInfo *bi, uint16_t *block, uint8_t min_color[3], uint8_t max_color[3], int *total_rgb, int *total_pixels, uint8_t avg_color[3], int first_block)
static void	rpza_encode_stream (RpzaContext *s, const AVFrame *pict)
static int	rpza_encode_init (AVCodecContext *avctx)
static int	rpza_encode_frame (AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static int	rpza_encode_end (AVCodecContext *avctx)

Variables
static const AVOption	options []
static const AVClass	rpza_class
const AVCodec	ff_rpza_encoder

Detailed Description

QT RPZA Video Encoder by Todd Kirby doubl.nosp@m.esho.nosp@m.t@pac.nosp@m.bell.nosp@m..net and David Adler

Definition in file rpzaenc.c.

Macro Definition Documentation

SQR

#define SQR

(

x

)

((x) * (x))

Definition at line 65 of file rpzaenc.c.

GET_CHAN

#define GET_CHAN	(		color,
			chan
	)		(((color) >> ((chan) * 5) & 0x1F) * 8)

Definition at line 68 of file rpzaenc.c.

R

#define R

(

color

)

GET_CHAN(color, RED)

Definition at line 69 of file rpzaenc.c.

G

#define G

(

color

)

GET_CHAN(color, GREEN)

Definition at line 70 of file rpzaenc.c.

B

#define B

(

color

)

GET_CHAN(color, BLUE)

Definition at line 71 of file rpzaenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(RpzaContext, x)

Definition at line 829 of file rpzaenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 830 of file rpzaenc.c.

Enumeration Type Documentation

channel_offset

enum channel_offset

Enumerator
RED
GREEN
BLUE

Definition at line 53 of file rpzaenc.c.

Function Documentation

get_colors()

static void get_colors ( uint8_t *  min, uint8_t *  max, uint8_t  color4[4][3]  )

static

Definition at line 87 of file rpzaenc.c.

Referenced by encode_four_color_block().

get_block_info()

static int get_block_info ( BlockInfo *  bi, int  block  )

static

Definition at line 116 of file rpzaenc.c.

Referenced by rpza_encode_stream().

rgb24_to_rgb555()

static uint16_t rgb24_to_rgb555 ( uint8_t *  rgb24 )

static

Definition at line 138 of file rpzaenc.c.

Referenced by encode_four_color_block(), and rpza_encode_stream().

diff_colors()

static int diff_colors ( uint8_t *  colorA, uint8_t *  colorB  )

static

Definition at line 157 of file rpzaenc.c.

Referenced by match_color().

max_component_diff()

static int max_component_diff ( uint16_t *  colorA, uint16_t *  colorB  )

static

Definition at line 171 of file rpzaenc.c.

Referenced by compare_blocks().

get_max_component_diff()

static void get_max_component_diff ( BlockInfo *  bi, uint16_t *  block_ptr, uint8_t *  min, uint8_t *  max, channel_offset *  chan  )

static

Definition at line 195 of file rpzaenc.c.

Referenced by rpza_encode_stream().

compare_blocks()

static int compare_blocks ( uint16_t *  block1, uint16_t *  block2, BlockInfo *  bi, int  thresh  )

static

Definition at line 245 of file rpzaenc.c.

Referenced by rpza_encode_stream().

leastsquares()

static int leastsquares ( uint16_t *  block_ptr, BlockInfo *  bi, channel_offset  xchannel, channel_offset  ychannel, double *  slope, double *  y_intercept, double *  correlation_coef  )

static

Definition at line 265 of file rpzaenc.c.

Referenced by rpza_encode_stream().

calc_lsq_max_fit_error()

static int calc_lsq_max_fit_error ( uint16_t *  block_ptr, BlockInfo *  bi, int  min, int  max, int  tmp_min, int  tmp_max, channel_offset  xchannel, channel_offset  ychannel  )

static

Definition at line 318 of file rpzaenc.c.

Referenced by rpza_encode_stream().

match_color()

static int match_color ( uint16_t *  color, uint8_t  colors[4][3]  )

static

Definition at line 359 of file rpzaenc.c.

Referenced by encode_four_color_block().

encode_four_color_block()

static int encode_four_color_block ( uint8_t *  min_color, uint8_t *  max_color, PutBitContext *  pb, uint16_t *  block_ptr, BlockInfo *  bi  )

static

Definition at line 386 of file rpzaenc.c.

Referenced by rpza_encode_stream().

update_block_in_prev_frame()

static void update_block_in_prev_frame ( const uint16_t *  src_pixels, uint16_t *  dest_pixels, const BlockInfo *  bi, int  block_counter  )

static

Definition at line 418 of file rpzaenc.c.

Referenced by rpza_encode_stream().

update_block_stats()

static int update_block_stats ( RpzaContext *  s, BlockInfo *  bi, uint16_t *  block, uint8_t  min_color[3], uint8_t  max_color[3], int *  total_rgb, int *  total_pixels, uint8_t  avg_color[3], int  first_block  )

static

Definition at line 444 of file rpzaenc.c.

Referenced by rpza_encode_stream().

rpza_encode_stream()

static void rpza_encode_stream ( RpzaContext *  s, const AVFrame *  pict  )

static

Definition at line 548 of file rpzaenc.c.

Referenced by rpza_encode_frame().

rpza_encode_init()

static int rpza_encode_init ( AVCodecContext *  avctx )

static

Definition at line 760 of file rpzaenc.c.

rpza_encode_frame()

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

static

Definition at line 774 of file rpzaenc.c.

rpza_encode_end()

static int rpza_encode_end ( AVCodecContext *  avctx )

static

Definition at line 820 of file rpzaenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "skip_frame_thresh", NULL, OFFSET(skip_frame_thresh), AV_OPT_TYPE_INT, {.i64=1}, 0, 24, VE},
    { "start_one_color_thresh", NULL, OFFSET(start_one_color_thresh), AV_OPT_TYPE_INT, {.i64=1}, 0, 24, VE},
    { "continue_one_color_thresh", NULL, OFFSET(continue_one_color_thresh), AV_OPT_TYPE_INT, {.i64=0}, 0, 24, VE},
    { "sixteen_color_thresh", NULL, OFFSET(sixteen_color_thresh), AV_OPT_TYPE_INT, {.i64=1}, 0, 24, VE},
    { NULL },
}

Definition at line 831 of file rpzaenc.c.

rpza_class

const AVClass rpza_class

static

Initial value:

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

Definition at line 839 of file rpzaenc.c.

ff_rpza_encoder

const AVCodec ff_rpza_encoder

Initial value:

= {
    .name           = "rpza",
    .long_name      = NULL_IF_CONFIG_SMALL("QuickTime video (RPZA)"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_RPZA,
    .priv_data_size = sizeof(RpzaContext),
    .priv_class     = &rpza_class,
    .init           = rpza_encode_init,
    .encode2        = rpza_encode_frame,
    .close          = rpza_encode_end,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_RGB555,
                                                     AV_PIX_FMT_NONE},
}

Definition at line 846 of file rpzaenc.c.