dvenc.c File Reference

#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/internal.h"
#include "libavutil/mem_internal.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "dv.h"
#include "dv_profile_internal.h"
#include "dv_tablegen.h"
#include "encode.h"
#include "fdctdsp.h"
#include "mathops.h"
#include "me_cmp.h"
#include "pixblockdsp.h"
#include "put_bits.h"

Go to the source code of this file.

Data Structures
struct	EncBlockInfo

Macros
#define	DV100_SACRIFICE_QUALITY_FOR_SPEED   1
#define	DV100_ENABLE_FINER   1
#define	DV100_MAKE_QLEVEL(qno, cno)   ((qno<<2) | (cno))
#define	DV100_QLEVEL_QNO(qlevel)   (qlevel>>2)
#define	DV100_QLEVEL_CNO(qlevel)   (qlevel&0x3)
#define	DV100_NUM_QLEVELS   31
#define	VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
#define	OFFSET(x)   offsetof(DVVideoContext, x)

Functions
static av_cold int	dvvideo_encode_init (AVCodecContext *avctx)
static av_always_inline int	dv_rl2vlc (int run, int l, int sign, uint32_t *vlc)
static av_always_inline int	dv_rl2vlc_size (int run, int l)
static av_always_inline PutBitContext *	dv_encode_ac (EncBlockInfo *bi, PutBitContext *pb_pool, PutBitContext *pb_end)
static av_always_inline int	dv_guess_dct_mode (DVVideoContext *s, uint8_t *data, ptrdiff_t linesize)
static av_always_inline int	dv_set_class_number_sd (DVVideoContext *s, int16_t *blk, EncBlockInfo *bi, const uint8_t *zigzag_scan, const int *weight, int bias)
static void	dv_set_class_number_hd (DVVideoContext *s, int16_t *blk, EncBlockInfo *bi, const uint8_t *zigzag_scan, const int *weight, int bias)
static av_always_inline int	dv_init_enc_block (EncBlockInfo *bi, uint8_t *data, int linesize, DVVideoContext *s, int chroma)
static av_always_inline int	dv100_quantize (int level, int qsinv)
static int	dv100_actual_quantize (EncBlockInfo *b, int qlevel)
static void	dv_guess_qnos_hd (EncBlockInfo *blks, int *qnos)
static void	dv_guess_qnos (EncBlockInfo *blks, int *qnos)
static void	dv_revise_cnos (uint8_t *dif, EncBlockInfo *blk, const AVDVProfile *profile)
static int	dv_encode_video_segment (AVCodecContext *avctx, void *arg)
static int	dv_write_pack (enum dv_pack_type pack_id, DVVideoContext *c, uint8_t *buf)
static int	dv_write_dif_id (enum dv_section_type t, uint8_t chan_num, uint8_t seq_num, uint8_t dif_num, uint8_t *buf)
static int	dv_write_ssyb_id (uint8_t syb_num, uint8_t fr, uint8_t *buf)
static void	dv_format_frame (DVVideoContext *c, uint8_t *buf)
static int	dvvideo_encode_frame (AVCodecContext *c, AVPacket *pkt, const AVFrame *frame, int *got_packet)

Variables
static const int	vs_total_ac_bits_hd = (68 * 6 + 52*2) * 5
static const int	vs_total_ac_bits = (100 * 4 + 68 * 2) * 5
static const int	mb_area_start [5] = { 1, 6, 21, 43, 64 }
static const int	dv_weight_bits = 18
static const int	dv_weight_88 [64]
static const int	dv_weight_248 [64]
static const uint8_t	dv100_qlevels [DV100_NUM_QLEVELS]
static const int	dv100_min_bias = 0
static const int	dv100_chroma_bias = 0
static const int	dv100_starting_qno = 1
static const int	dv100_qlevel_inc = 4
static const int	dv100_qstep_bits = 16
static const int	dv100_qstep_inv [16]
static const int	dv_weight_1080 [2][64]
static const int	dv_weight_720 [2][64]
static const AVOption	dv_options []
static const AVClass	dvvideo_encode_class
const FFCodec	ff_dvvideo_encoder

Detailed Description

DV encoder

Definition in file dvenc.c.

Macro Definition Documentation

DV100_SACRIFICE_QUALITY_FOR_SPEED

#define DV100_SACRIFICE_QUALITY_FOR_SPEED   1

Definition at line 259 of file dvenc.c.

DV100_ENABLE_FINER

#define DV100_ENABLE_FINER   1

Definition at line 260 of file dvenc.c.

DV100_MAKE_QLEVEL

#define DV100_MAKE_QLEVEL	(		qno,
			cno
	)		((qno<<2) | (cno))

Definition at line 263 of file dvenc.c.

DV100_QLEVEL_QNO

#define DV100_QLEVEL_QNO

(

qlevel

)

(qlevel>>2)

Definition at line 264 of file dvenc.c.

DV100_QLEVEL_CNO

#define DV100_QLEVEL_CNO

(

qlevel

)

(qlevel&0x3)

Definition at line 265 of file dvenc.c.

DV100_NUM_QLEVELS

#define DV100_NUM_QLEVELS   31

Definition at line 267 of file dvenc.c.

VE

#define VE   AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Definition at line 1195 of file dvenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(DVVideoContext, x)

Definition at line 1196 of file dvenc.c.

Function Documentation

dvvideo_encode_init()

static av_cold int dvvideo_encode_init ( AVCodecContext *  avctx )

static

Definition at line 50 of file dvenc.c.

dv_rl2vlc()

static av_always_inline int dv_rl2vlc ( int  run, int  l, int  sign, uint32_t *  vlc  )

static

Definition at line 143 of file dvenc.c.

Referenced by dv_encode_ac().

dv_rl2vlc_size()

static av_always_inline int dv_rl2vlc_size ( int  run, int  l  )

static

Definition at line 149 of file dvenc.c.

Referenced by dv100_actual_quantize(), dv_guess_qnos(), and dv_set_class_number_sd().

dv_encode_ac()

static av_always_inline PutBitContext* dv_encode_ac ( EncBlockInfo *  bi, PutBitContext *  pb_pool, PutBitContext *  pb_end  )

static

Definition at line 174 of file dvenc.c.

Referenced by dv_encode_video_segment().

dv_guess_dct_mode()

static av_always_inline int dv_guess_dct_mode ( DVVideoContext *  s, uint8_t *  data, ptrdiff_t  linesize  )

static

Definition at line 220 of file dvenc.c.

Referenced by dv_encode_video_segment(), and dv_init_enc_block().

dv_set_class_number_sd()

static av_always_inline int dv_set_class_number_sd ( DVVideoContext *  s, int16_t *  blk, EncBlockInfo *  bi, const uint8_t *  zigzag_scan, const int *  weight, int  bias  )

static

Definition at line 368 of file dvenc.c.

Referenced by dv_init_enc_block().

dv_set_class_number_hd()

static void dv_set_class_number_hd ( DVVideoContext *  s, int16_t *  blk, EncBlockInfo *  bi, const uint8_t *  zigzag_scan, const int *  weight, int  bias  )

inlinestatic

Definition at line 452 of file dvenc.c.

Referenced by dv_init_enc_block().

dv_init_enc_block()

static av_always_inline int dv_init_enc_block ( EncBlockInfo *  bi, uint8_t *  data, int  linesize, DVVideoContext *  s, int  chroma  )

static

Definition at line 509 of file dvenc.c.

Referenced by dv_encode_video_segment().

dv100_quantize()

static av_always_inline int dv100_quantize ( int  level, int  qsinv  )

static

Definition at line 560 of file dvenc.c.

Referenced by dv100_actual_quantize().

dv100_actual_quantize()

static int dv100_actual_quantize ( EncBlockInfo *  b, int  qlevel  )

static

Definition at line 573 of file dvenc.c.

Referenced by dv_guess_qnos_hd().

dv_guess_qnos_hd()

static void dv_guess_qnos_hd ( EncBlockInfo *  blks, int *  qnos  )

inlinestatic

Definition at line 611 of file dvenc.c.

Referenced by dv_encode_video_segment().

dv_guess_qnos()

static void dv_guess_qnos ( EncBlockInfo *  blks, int *  qnos  )

inlinestatic

Definition at line 753 of file dvenc.c.

Referenced by dv_encode_video_segment().

dv_revise_cnos()

static void dv_revise_cnos ( uint8_t *  dif, EncBlockInfo *  blk, const AVDVProfile *  profile  )

inlinestatic

Definition at line 827 of file dvenc.c.

Referenced by dv_encode_video_segment().

dv_encode_video_segment()

static int dv_encode_video_segment ( AVCodecContext *  avctx, void *  arg  )

static

Definition at line 845 of file dvenc.c.

Referenced by dvvideo_encode_frame().

dv_write_pack()

static int dv_write_pack ( enum dv_pack_type  pack_id, DVVideoContext *  c, uint8_t *  buf  )

inlinestatic

Definition at line 996 of file dvenc.c.

Referenced by dv_format_frame().

dv_write_dif_id()

static int dv_write_dif_id ( enum dv_section_type  t, uint8_t  chan_num, uint8_t  seq_num, uint8_t  dif_num, uint8_t *  buf  )

inlinestatic

Definition at line 1080 of file dvenc.c.

Referenced by dv_format_frame().

dv_write_ssyb_id()

static int dv_write_ssyb_id ( uint8_t  syb_num, uint8_t  fr, uint8_t *  buf  )

inlinestatic

Definition at line 1096 of file dvenc.c.

Referenced by dv_format_frame().

dv_format_frame()

static void dv_format_frame ( DVVideoContext *  c, uint8_t *  buf  )

static

Definition at line 1116 of file dvenc.c.

Referenced by dvvideo_encode_frame().

dvvideo_encode_frame()

static int dvvideo_encode_frame ( AVCodecContext *  c, AVPacket *  pkt, const AVFrame *  frame, int *  got_packet  )

static

Definition at line 1168 of file dvenc.c.

Variable Documentation

vs_total_ac_bits_hd

const int vs_total_ac_bits_hd = (68 * 6 + 52*2) * 5

static

Definition at line 98 of file dvenc.c.

Referenced by dv_guess_qnos_hd().

vs_total_ac_bits

const int vs_total_ac_bits = (100 * 4 + 68 * 2) * 5

static

Definition at line 99 of file dvenc.c.

Referenced by dv_encode_video_segment(), and dv_guess_qnos().

mb_area_start

const int mb_area_start[5] = { 1, 6, 21, 43, 64 }

static

Definition at line 100 of file dvenc.c.

Referenced by dv_guess_qnos(), and dv_set_class_number_sd().

dv_weight_bits

const int dv_weight_bits = 18

static

Definition at line 235 of file dvenc.c.

Referenced by dv_set_class_number_sd().

dv_weight_88

const int dv_weight_88[64]

static

Initial value:

= {
    131072, 257107, 257107, 242189, 252167, 242189, 235923, 237536,
    237536, 235923, 229376, 231390, 223754, 231390, 229376, 222935,
    224969, 217965, 217965, 224969, 222935, 200636, 218652, 211916,
    212325, 211916, 218652, 200636, 188995, 196781, 205965, 206433,
    206433, 205965, 196781, 188995, 185364, 185364, 200636, 200704,
    200636, 185364, 185364, 174609, 180568, 195068, 195068, 180568,
    174609, 170091, 175557, 189591, 175557, 170091, 165371, 170627,
    170627, 165371, 160727, 153560, 160727, 144651, 144651, 136258,
}

Definition at line 236 of file dvenc.c.

Referenced by dv_init_enc_block().

dv_weight_248

const int dv_weight_248[64]

static

Initial value:

= {
    131072, 262144, 257107, 257107, 242189, 242189, 242189, 242189,
    237536, 237536, 229376, 229376, 200636, 200636, 224973, 224973,
    223754, 223754, 235923, 235923, 229376, 229376, 217965, 217965,
    211916, 211916, 196781, 196781, 185364, 185364, 206433, 206433,
    211916, 211916, 222935, 222935, 200636, 200636, 205964, 205964,
    200704, 200704, 180568, 180568, 175557, 175557, 195068, 195068,
    185364, 185364, 188995, 188995, 174606, 174606, 175557, 175557,
    170627, 170627, 153560, 153560, 165371, 165371, 144651, 144651,
}

Definition at line 246 of file dvenc.c.

Referenced by dv_init_enc_block().

dv100_qlevels

const uint8_t dv100_qlevels[DV100_NUM_QLEVELS]

static

Definition at line 277 of file dvenc.c.

Referenced by dv100_actual_quantize(), and dv_guess_qnos_hd().

dv100_min_bias

const int dv100_min_bias = 0

static

Definition at line 312 of file dvenc.c.

Referenced by dv_init_enc_block().

dv100_chroma_bias

const int dv100_chroma_bias = 0

static

Definition at line 313 of file dvenc.c.

Referenced by dv_init_enc_block().

dv100_starting_qno

const int dv100_starting_qno = 1

static

Definition at line 314 of file dvenc.c.

Referenced by dv_guess_qnos_hd().

dv100_qlevel_inc

const int dv100_qlevel_inc = 4

static

Definition at line 317 of file dvenc.c.

Referenced by dv_guess_qnos_hd().

dv100_qstep_bits

const int dv100_qstep_bits = 16

static

Definition at line 323 of file dvenc.c.

Referenced by dv100_quantize().

dv100_qstep_inv

const int dv100_qstep_inv[16]

static

Initial value:

= {
        65536,  65536,  32768,  21845,  16384,  13107,  10923,  9362,  8192,  4096,  3641,  3277,  2979,  2731,  2341,  1260,
}

Definition at line 324 of file dvenc.c.

Referenced by dv100_actual_quantize().

dv_weight_1080

const int dv_weight_1080[2][64]

static

Initial value:

= {
    { 8192, 65536, 65536, 61681, 61681, 61681, 58254, 58254,
      58254, 58254, 58254, 58254, 55188, 58254, 58254, 55188,
      55188, 55188, 55188, 55188, 55188, 24966, 27594, 26214,
      26214, 26214, 27594, 24966, 23831, 24385, 25575, 25575,
      25575, 25575, 24385, 23831, 23302, 23302, 24966, 24966,
      24966, 23302, 23302, 21845, 22795, 24385, 24385, 22795,
      21845, 21400, 21845, 23831, 21845, 21400, 10382, 10700,
      10700, 10382, 10082, 9620, 10082, 9039, 9039, 8525, },
    { 8192, 65536, 65536, 61681, 61681, 61681, 41943, 41943,
      41943, 41943, 40330, 41943, 40330, 41943, 40330, 40330,
      40330, 38836, 38836, 40330, 40330, 24966, 27594, 26214,
      26214, 26214, 27594, 24966, 23831, 24385, 25575, 25575,
      25575, 25575, 24385, 23831, 11523, 11523, 12483, 12483,
      12483, 11523, 11523, 10923, 11275, 12193, 12193, 11275,
      10923, 5323, 5490, 5924, 5490, 5323, 5165, 5323,
      5323, 5165, 5017, 4788, 5017, 4520, 4520, 4263, }
}

Definition at line 330 of file dvenc.c.

Referenced by dv_init_enc_block().

dv_weight_720

const int dv_weight_720[2][64]

static

Initial value:

= {
    { 8192, 65536, 65536, 61681, 61681, 61681, 58254, 58254,
      58254, 58254, 58254, 58254, 55188, 58254, 58254, 55188,
      55188, 55188, 55188, 55188, 55188, 24966, 27594, 26214,
      26214, 26214, 27594, 24966, 23831, 24385, 25575, 25575,
      25575, 25575, 24385, 23831, 15420, 15420, 16644, 16644,
      16644, 15420, 15420, 10923, 11398, 12193, 12193, 11398,
      10923, 10700, 10923, 11916, 10923, 10700, 5191, 5350,
      5350, 5191, 5041, 4810, 5041, 4520, 4520, 4263, },
    { 8192, 43691, 43691, 40330, 40330, 40330, 29127, 29127,
      29127, 29127, 29127, 29127, 27594, 29127, 29127, 27594,
      27594, 27594, 27594, 27594, 27594, 12483, 13797, 13107,
      13107, 13107, 13797, 12483, 11916, 12193, 12788, 12788,
      12788, 12788, 12193, 11916, 5761, 5761, 6242, 6242,
      6242, 5761, 5761, 5461, 5638, 5461, 6096, 5638,
      5461, 2661, 2745, 2962, 2745, 2661, 2583, 2661,
      2661, 2583, 2509, 2394, 2509, 2260, 2260, 2131, }
}

Definition at line 349 of file dvenc.c.

Referenced by dv_init_enc_block().

dv_options

const AVOption dv_options[]

static

Initial value:

= {
    { "quant_deadzone",        "Quantizer dead zone",    OFFSET(quant_deadzone),       AV_OPT_TYPE_INT, { .i64 = 7 }, 0, 1024, VE },
    { NULL },
}

Definition at line 1197 of file dvenc.c.

dvvideo_encode_class

const AVClass dvvideo_encode_class

static

Initial value:

= {
    .class_name = "dvvideo encoder",
    .item_name  = av_default_item_name,
    .option     = dv_options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 1202 of file dvenc.c.

ff_dvvideo_encoder

const FFCodec ff_dvvideo_encoder

Initial value:

= {
    .p.name         = "dvvideo",
    .p.long_name    = NULL_IF_CONFIG_SMALL("DV (Digital Video)"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_DVVIDEO,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS |
                      AV_CODEC_CAP_SLICE_THREADS,
    .priv_data_size = sizeof(DVVideoContext),
    .init           = dvvideo_encode_init,
    FF_CODEC_ENCODE_CB(dvvideo_encode_frame),
    .p.pix_fmts     = (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV422P,
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE
    },
    .p.priv_class   = &dvvideo_encode_class,
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 1209 of file dvenc.c.